Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Routines providing a simple monitor for use on the PowerMac. |
| 3 | * |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 4 | * Copyright (C) 1996-2005 Paul Mackerras. |
Michael Ellerman | 47679283 | 2006-10-03 14:12:08 +1000 | [diff] [blame] | 5 | * Copyright (C) 2001 PPC64 Team, IBM Corp |
| 6 | * Copyrignt (C) 2006 Michael Ellerman, IBM Corp |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License |
| 10 | * as published by the Free Software Foundation; either version |
| 11 | * 2 of the License, or (at your option) any later version. |
| 12 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include <linux/errno.h> |
| 14 | #include <linux/sched.h> |
| 15 | #include <linux/smp.h> |
| 16 | #include <linux/mm.h> |
| 17 | #include <linux/reboot.h> |
| 18 | #include <linux/delay.h> |
| 19 | #include <linux/kallsyms.h> |
Michael Ellerman | ca5dd39 | 2012-08-23 22:09:12 +0000 | [diff] [blame] | 20 | #include <linux/kmsg_dump.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include <linux/cpumask.h> |
Paul Gortmaker | 4b16f8e | 2011-07-22 18:24:23 -0400 | [diff] [blame] | 22 | #include <linux/export.h> |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 23 | #include <linux/sysrq.h> |
Andrew Morton | 4694ca0 | 2005-11-13 16:06:50 -0800 | [diff] [blame] | 24 | #include <linux/interrupt.h> |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 25 | #include <linux/irq.h> |
Jeremy Fitzhardinge | 73c9cea | 2006-12-08 03:30:41 -0800 | [diff] [blame] | 26 | #include <linux/bug.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | |
| 28 | #include <asm/ptrace.h> |
| 29 | #include <asm/string.h> |
| 30 | #include <asm/prom.h> |
| 31 | #include <asm/machdep.h> |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 32 | #include <asm/xmon.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <asm/processor.h> |
| 34 | #include <asm/pgtable.h> |
| 35 | #include <asm/mmu.h> |
| 36 | #include <asm/mmu_context.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <asm/cputable.h> |
| 38 | #include <asm/rtas.h> |
| 39 | #include <asm/sstep.h> |
Paul Mackerras | f583ffc | 2006-10-10 11:47:07 +1000 | [diff] [blame] | 40 | #include <asm/irq_regs.h> |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 41 | #include <asm/spu.h> |
| 42 | #include <asm/spu_priv1.h> |
Michael Neuling | c3b75bd | 2008-01-18 15:50:30 +1100 | [diff] [blame] | 43 | #include <asm/setjmp.h> |
Anton Vorontsov | 322b439 | 2008-12-17 10:08:55 +0000 | [diff] [blame] | 44 | #include <asm/reg.h> |
David Howells | ae3a197 | 2012-03-28 18:30:02 +0100 | [diff] [blame] | 45 | #include <asm/debug.h> |
Michael Neuling | 9422de3 | 2012-12-20 14:06:44 +0000 | [diff] [blame] | 46 | #include <asm/hw_breakpoint.h> |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 47 | |
| 48 | #ifdef CONFIG_PPC64 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #include <asm/hvcall.h> |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 50 | #include <asm/paca.h> |
| 51 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
| 53 | #include "nonstdio.h" |
Michael Ellerman | e042604 | 2006-11-23 00:46:45 +0100 | [diff] [blame] | 54 | #include "dis-asm.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | #ifdef CONFIG_SMP |
Michael Ellerman | 1c8950f | 2008-05-08 14:27:17 +1000 | [diff] [blame] | 57 | static cpumask_t cpus_in_xmon = CPU_MASK_NONE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | static unsigned long xmon_taken = 1; |
| 59 | static int xmon_owner; |
| 60 | static int xmon_gate; |
Michael Ellerman | ddadb6b | 2012-09-13 23:01:31 +0000 | [diff] [blame] | 61 | #else |
| 62 | #define xmon_owner 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | #endif /* CONFIG_SMP */ |
| 64 | |
Anton Blanchard | 5be3492 | 2010-01-12 00:50:14 +0000 | [diff] [blame] | 65 | static unsigned long in_xmon __read_mostly = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | |
| 67 | static unsigned long adrs; |
| 68 | static int size = 1; |
| 69 | #define MAX_DUMP (128 * 1024) |
| 70 | static unsigned long ndump = 64; |
| 71 | static unsigned long nidump = 16; |
| 72 | static unsigned long ncsum = 4096; |
| 73 | static int termch; |
| 74 | static char tmpstr[128]; |
| 75 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | static long bus_error_jmp[JMP_BUF_LEN]; |
| 77 | static int catch_memory_errors; |
| 78 | static long *xmon_fault_jmp[NR_CPUS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
| 80 | /* Breakpoint stuff */ |
| 81 | struct bpt { |
| 82 | unsigned long address; |
| 83 | unsigned int instr[2]; |
| 84 | atomic_t ref_count; |
| 85 | int enabled; |
| 86 | unsigned long pad; |
| 87 | }; |
| 88 | |
| 89 | /* Bits in bpt.enabled */ |
| 90 | #define BP_IABR_TE 1 /* IABR translation enabled */ |
| 91 | #define BP_IABR 2 |
| 92 | #define BP_TRAP 8 |
| 93 | #define BP_DABR 0x10 |
| 94 | |
| 95 | #define NBPTS 256 |
| 96 | static struct bpt bpts[NBPTS]; |
| 97 | static struct bpt dabr; |
| 98 | static struct bpt *iabr; |
| 99 | static unsigned bpinstr = 0x7fe00008; /* trap */ |
| 100 | |
| 101 | #define BP_NUM(bp) ((bp) - bpts + 1) |
| 102 | |
| 103 | /* Prototypes */ |
| 104 | static int cmds(struct pt_regs *); |
| 105 | static int mread(unsigned long, void *, int); |
| 106 | static int mwrite(unsigned long, void *, int); |
| 107 | static int handle_fault(struct pt_regs *); |
| 108 | static void byterev(unsigned char *, int); |
| 109 | static void memex(void); |
| 110 | static int bsesc(void); |
| 111 | static void dump(void); |
| 112 | static void prdump(unsigned long, long); |
| 113 | static int ppc_inst_dump(unsigned long, long, int); |
Vinay Sridhar | f312deb | 2009-05-14 23:13:07 +0000 | [diff] [blame] | 114 | static void dump_log_buf(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | static void backtrace(struct pt_regs *); |
| 116 | static void excprint(struct pt_regs *); |
| 117 | static void prregs(struct pt_regs *); |
| 118 | static void memops(int); |
| 119 | static void memlocate(void); |
| 120 | static void memzcan(void); |
| 121 | static void memdiffs(unsigned char *, unsigned char *, unsigned, unsigned); |
| 122 | int skipbl(void); |
| 123 | int scanhex(unsigned long *valp); |
| 124 | static void scannl(void); |
| 125 | static int hexdigit(int); |
| 126 | void getstring(char *, int); |
| 127 | static void flush_input(void); |
| 128 | static int inchar(void); |
| 129 | static void take_input(char *); |
| 130 | static unsigned long read_spr(int); |
| 131 | static void write_spr(int, unsigned long); |
| 132 | static void super_regs(void); |
| 133 | static void remove_bpts(void); |
| 134 | static void insert_bpts(void); |
| 135 | static void remove_cpu_bpts(void); |
| 136 | static void insert_cpu_bpts(void); |
| 137 | static struct bpt *at_breakpoint(unsigned long pc); |
| 138 | static struct bpt *in_breakpoint_table(unsigned long pc, unsigned long *offp); |
| 139 | static int do_step(struct pt_regs *); |
| 140 | static void bpt_cmds(void); |
| 141 | static void cacheflush(void); |
| 142 | static int cpu_cmd(void); |
| 143 | static void csum(void); |
| 144 | static void bootcmds(void); |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 145 | static void proccall(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | void dump_segments(void); |
| 147 | static void symbol_lookup(void); |
Olaf Hering | 26c8af5 | 2006-09-08 16:29:21 +0200 | [diff] [blame] | 148 | static void xmon_show_stack(unsigned long sp, unsigned long lr, |
| 149 | unsigned long pc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | static void xmon_print_symbol(unsigned long address, const char *mid, |
| 151 | const char *after); |
| 152 | static const char *getvecname(unsigned long vec); |
| 153 | |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 154 | static int do_spu_cmd(void); |
| 155 | |
Benjamin Herrenschmidt | 5a8a1a2 | 2007-11-16 18:23:33 +1100 | [diff] [blame] | 156 | #ifdef CONFIG_44x |
| 157 | static void dump_tlb_44x(void); |
| 158 | #endif |
Benjamin Herrenschmidt | 0324715 | 2010-07-09 15:34:50 +1000 | [diff] [blame] | 159 | #ifdef CONFIG_PPC_BOOK3E |
| 160 | static void dump_tlb_book3e(void); |
| 161 | #endif |
Benjamin Herrenschmidt | 5a8a1a2 | 2007-11-16 18:23:33 +1100 | [diff] [blame] | 162 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 163 | static int xmon_no_auto_backtrace; |
Olaf Hering | 26c8af5 | 2006-09-08 16:29:21 +0200 | [diff] [blame] | 164 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 165 | extern void xmon_enter(void); |
| 166 | extern void xmon_leave(void); |
| 167 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 168 | #ifdef CONFIG_PPC64 |
| 169 | #define REG "%.16lx" |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 170 | #else |
| 171 | #define REG "%.8lx" |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 172 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | |
Philippe Bergheaud | 72eceef | 2013-12-02 10:10:12 +0100 | [diff] [blame] | 174 | #ifdef __LITTLE_ENDIAN__ |
| 175 | #define GETWORD(v) (((v)[3] << 24) + ((v)[2] << 16) + ((v)[1] << 8) + (v)[0]) |
| 176 | #else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | #define GETWORD(v) (((v)[0] << 24) + ((v)[1] << 16) + ((v)[2] << 8) + (v)[3]) |
Philippe Bergheaud | 72eceef | 2013-12-02 10:10:12 +0100 | [diff] [blame] | 178 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | |
| 180 | #define isxdigit(c) (('0' <= (c) && (c) <= '9') \ |
| 181 | || ('a' <= (c) && (c) <= 'f') \ |
| 182 | || ('A' <= (c) && (c) <= 'F')) |
| 183 | #define isalnum(c) (('0' <= (c) && (c) <= '9') \ |
| 184 | || ('a' <= (c) && (c) <= 'z') \ |
| 185 | || ('A' <= (c) && (c) <= 'Z')) |
| 186 | #define isspace(c) (c == ' ' || c == '\t' || c == 10 || c == 13 || c == 0) |
| 187 | |
| 188 | static char *help_string = "\ |
| 189 | Commands:\n\ |
| 190 | b show breakpoints\n\ |
| 191 | bd set data breakpoint\n\ |
| 192 | bi set instruction breakpoint\n\ |
| 193 | bc clear breakpoint\n" |
| 194 | #ifdef CONFIG_SMP |
| 195 | "\ |
| 196 | c print cpus stopped in xmon\n\ |
| 197 | c# try to switch to cpu number h (in hex)\n" |
| 198 | #endif |
| 199 | "\ |
| 200 | C checksum\n\ |
| 201 | d dump bytes\n\ |
| 202 | di dump instructions\n\ |
| 203 | df dump float values\n\ |
| 204 | dd dump double values\n\ |
Michael Ellerman | ddadb6b | 2012-09-13 23:01:31 +0000 | [diff] [blame] | 205 | dl dump the kernel log buffer\n" |
| 206 | #ifdef CONFIG_PPC64 |
| 207 | "\ |
| 208 | dp[#] dump paca for current cpu, or cpu #\n\ |
| 209 | dpa dump paca for all possible cpus\n" |
| 210 | #endif |
| 211 | "\ |
Olaf Hering | 7e5b593 | 2006-03-08 20:40:28 +0100 | [diff] [blame] | 212 | dr dump stream of raw bytes\n\ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | e print exception information\n\ |
| 214 | f flush cache\n\ |
| 215 | la lookup symbol+offset of specified address\n\ |
| 216 | ls lookup address of specified symbol\n\ |
| 217 | m examine/change memory\n\ |
| 218 | mm move a block of memory\n\ |
| 219 | ms set a block of memory\n\ |
| 220 | md compare two blocks of memory\n\ |
| 221 | ml locate a block of memory\n\ |
| 222 | mz zero a block of memory\n\ |
| 223 | mi show information about memory allocation\n\ |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 224 | p call a procedure\n\ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | r print registers\n\ |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 226 | s single step\n" |
Arnd Bergmann | e055595 | 2006-11-27 19:18:55 +0100 | [diff] [blame] | 227 | #ifdef CONFIG_SPU_BASE |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 228 | " ss stop execution on all spus\n\ |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 229 | sr restore execution on stopped spus\n\ |
Michael Ellerman | 24a24c8 | 2006-11-23 00:46:41 +0100 | [diff] [blame] | 230 | sf # dump spu fields for spu # (in hex)\n\ |
Michael Ellerman | c99176a | 2007-02-26 18:14:06 +0900 | [diff] [blame] | 231 | sd # dump spu local store for spu # (in hex)\n\ |
Michael Ellerman | af89fb8 | 2006-11-23 00:46:44 +0100 | [diff] [blame] | 232 | sdi # disassemble spu local store for spu # (in hex)\n" |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 233 | #endif |
| 234 | " S print special registers\n\ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | t print backtrace\n\ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | x exit monitor and recover\n\ |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 237 | X exit monitor and dont recover\n" |
Jimi Xenidis | 79873e8 | 2011-09-29 11:25:10 +0000 | [diff] [blame] | 238 | #if defined(CONFIG_PPC64) && !defined(CONFIG_PPC_BOOK3E) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 239 | " u dump segment table or SLB\n" |
Jimi Xenidis | 79873e8 | 2011-09-29 11:25:10 +0000 | [diff] [blame] | 240 | #elif defined(CONFIG_PPC_STD_MMU_32) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 241 | " u dump segment registers\n" |
Jimi Xenidis | 79873e8 | 2011-09-29 11:25:10 +0000 | [diff] [blame] | 242 | #elif defined(CONFIG_44x) || defined(CONFIG_PPC_BOOK3E) |
Benjamin Herrenschmidt | 5a8a1a2 | 2007-11-16 18:23:33 +1100 | [diff] [blame] | 243 | " u dump TLB\n" |
| 244 | #endif |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 245 | " ? help\n" |
| 246 | " zr reboot\n\ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | zh halt\n" |
| 248 | ; |
| 249 | |
| 250 | static struct pt_regs *xmon_regs; |
| 251 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 252 | static inline void sync(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | { |
| 254 | asm volatile("sync; isync"); |
| 255 | } |
| 256 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 257 | static inline void store_inst(void *p) |
| 258 | { |
| 259 | asm volatile ("dcbst 0,%0; sync; icbi 0,%0; isync" : : "r" (p)); |
| 260 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 262 | static inline void cflush(void *p) |
| 263 | { |
| 264 | asm volatile ("dcbf 0,%0; icbi 0,%0" : : "r" (p)); |
| 265 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 267 | static inline void cinval(void *p) |
| 268 | { |
| 269 | asm volatile ("dcbi 0,%0; icbi 0,%0" : : "r" (p)); |
| 270 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | |
| 272 | /* |
| 273 | * Disable surveillance (the service processor watchdog function) |
| 274 | * while we are in xmon. |
| 275 | * XXX we should re-enable it when we leave. :) |
| 276 | */ |
| 277 | #define SURVEILLANCE_TOKEN 9000 |
| 278 | |
| 279 | static inline void disable_surveillance(void) |
| 280 | { |
| 281 | #ifdef CONFIG_PPC_PSERIES |
| 282 | /* Since this can't be a module, args should end up below 4GB. */ |
| 283 | static struct rtas_args args; |
| 284 | |
| 285 | /* |
| 286 | * At this point we have got all the cpus we can into |
| 287 | * xmon, so there is hopefully no other cpu calling RTAS |
| 288 | * at the moment, even though we don't take rtas.lock. |
| 289 | * If we did try to take rtas.lock there would be a |
| 290 | * real possibility of deadlock. |
| 291 | */ |
| 292 | args.token = rtas_token("set-indicator"); |
| 293 | if (args.token == RTAS_UNKNOWN_SERVICE) |
| 294 | return; |
| 295 | args.nargs = 3; |
| 296 | args.nret = 1; |
| 297 | args.rets = &args.args[3]; |
| 298 | args.args[0] = SURVEILLANCE_TOKEN; |
| 299 | args.args[1] = 0; |
| 300 | args.args[2] = 0; |
| 301 | enter_rtas(__pa(&args)); |
| 302 | #endif /* CONFIG_PPC_PSERIES */ |
| 303 | } |
| 304 | |
| 305 | #ifdef CONFIG_SMP |
| 306 | static int xmon_speaker; |
| 307 | |
| 308 | static void get_output_lock(void) |
| 309 | { |
| 310 | int me = smp_processor_id() + 0x100; |
| 311 | int last_speaker = 0, prev; |
| 312 | long timeout; |
| 313 | |
| 314 | if (xmon_speaker == me) |
| 315 | return; |
Michael Ellerman | 730efb6 | 2013-12-23 23:46:04 +1100 | [diff] [blame] | 316 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | for (;;) { |
Michael Ellerman | 730efb6 | 2013-12-23 23:46:04 +1100 | [diff] [blame] | 318 | last_speaker = cmpxchg(&xmon_speaker, 0, me); |
| 319 | if (last_speaker == 0) |
| 320 | return; |
| 321 | |
Michael Ellerman | 1507589 | 2013-12-23 23:46:05 +1100 | [diff] [blame] | 322 | /* |
| 323 | * Wait a full second for the lock, we might be on a slow |
| 324 | * console, but check every 100us. |
| 325 | */ |
| 326 | timeout = 10000; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | while (xmon_speaker == last_speaker) { |
Michael Ellerman | 1507589 | 2013-12-23 23:46:05 +1100 | [diff] [blame] | 328 | if (--timeout > 0) { |
| 329 | udelay(100); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | continue; |
Michael Ellerman | 1507589 | 2013-12-23 23:46:05 +1100 | [diff] [blame] | 331 | } |
| 332 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | /* hostile takeover */ |
| 334 | prev = cmpxchg(&xmon_speaker, last_speaker, me); |
| 335 | if (prev == last_speaker) |
| 336 | return; |
| 337 | break; |
| 338 | } |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | static void release_output_lock(void) |
| 343 | { |
| 344 | xmon_speaker = 0; |
| 345 | } |
Michael Ellerman | 1c8950f | 2008-05-08 14:27:17 +1000 | [diff] [blame] | 346 | |
| 347 | int cpus_are_in_xmon(void) |
| 348 | { |
KOSAKI Motohiro | 104699c | 2011-04-28 05:07:23 +0000 | [diff] [blame] | 349 | return !cpumask_empty(&cpus_in_xmon); |
Michael Ellerman | 1c8950f | 2008-05-08 14:27:17 +1000 | [diff] [blame] | 350 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | #endif |
| 352 | |
Josh Boyer | daf8f40 | 2009-09-23 03:51:04 +0000 | [diff] [blame] | 353 | static inline int unrecoverable_excp(struct pt_regs *regs) |
| 354 | { |
Jimi Xenidis | 08f6d6a | 2011-09-29 12:05:28 +0000 | [diff] [blame] | 355 | #if defined(CONFIG_4xx) || defined(CONFIG_PPC_BOOK3E) |
Jimi Xenidis | 66857b3 | 2011-09-23 05:40:46 +0000 | [diff] [blame] | 356 | /* We have no MSR_RI bit on 4xx or Book3e, so we simply return false */ |
Josh Boyer | daf8f40 | 2009-09-23 03:51:04 +0000 | [diff] [blame] | 357 | return 0; |
| 358 | #else |
| 359 | return ((regs->msr & MSR_RI) == 0); |
| 360 | #endif |
| 361 | } |
| 362 | |
Arnd Bergmann | b0da985 | 2006-01-11 00:00:05 +0000 | [diff] [blame] | 363 | static int xmon_core(struct pt_regs *regs, int fromipi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | { |
| 365 | int cmd = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | struct bpt *bp; |
| 367 | long recurse_jmp[JMP_BUF_LEN]; |
| 368 | unsigned long offset; |
Anton Blanchard | f13659e | 2007-03-21 01:48:34 +1100 | [diff] [blame] | 369 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | #ifdef CONFIG_SMP |
| 371 | int cpu; |
| 372 | int secondary; |
| 373 | unsigned long timeout; |
| 374 | #endif |
| 375 | |
Anton Blanchard | f13659e | 2007-03-21 01:48:34 +1100 | [diff] [blame] | 376 | local_irq_save(flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | |
| 378 | bp = in_breakpoint_table(regs->nip, &offset); |
| 379 | if (bp != NULL) { |
| 380 | regs->nip = bp->address + offset; |
| 381 | atomic_dec(&bp->ref_count); |
| 382 | } |
| 383 | |
| 384 | remove_cpu_bpts(); |
| 385 | |
| 386 | #ifdef CONFIG_SMP |
| 387 | cpu = smp_processor_id(); |
KOSAKI Motohiro | 104699c | 2011-04-28 05:07:23 +0000 | [diff] [blame] | 388 | if (cpumask_test_cpu(cpu, &cpus_in_xmon)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | get_output_lock(); |
| 390 | excprint(regs); |
| 391 | printf("cpu 0x%x: Exception %lx %s in xmon, " |
| 392 | "returning to main loop\n", |
| 393 | cpu, regs->trap, getvecname(TRAP(regs))); |
Haren Myneni | 5cb4cc0 | 2005-08-03 15:08:18 +1000 | [diff] [blame] | 394 | release_output_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | longjmp(xmon_fault_jmp[cpu], 1); |
| 396 | } |
| 397 | |
| 398 | if (setjmp(recurse_jmp) != 0) { |
| 399 | if (!in_xmon || !xmon_gate) { |
Haren Myneni | 5cb4cc0 | 2005-08-03 15:08:18 +1000 | [diff] [blame] | 400 | get_output_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | printf("xmon: WARNING: bad recursive fault " |
| 402 | "on cpu 0x%x\n", cpu); |
Haren Myneni | 5cb4cc0 | 2005-08-03 15:08:18 +1000 | [diff] [blame] | 403 | release_output_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | goto waiting; |
| 405 | } |
| 406 | secondary = !(xmon_taken && cpu == xmon_owner); |
| 407 | goto cmdloop; |
| 408 | } |
| 409 | |
| 410 | xmon_fault_jmp[cpu] = recurse_jmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | |
| 412 | bp = NULL; |
Michael Ellerman | 9f0b079 | 2011-04-07 21:56:03 +0000 | [diff] [blame] | 413 | if ((regs->msr & (MSR_IR|MSR_PR|MSR_64BIT)) == (MSR_IR|MSR_64BIT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | bp = at_breakpoint(regs->nip); |
Josh Boyer | daf8f40 | 2009-09-23 03:51:04 +0000 | [diff] [blame] | 415 | if (bp || unrecoverable_excp(regs)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | fromipi = 0; |
| 417 | |
| 418 | if (!fromipi) { |
| 419 | get_output_lock(); |
| 420 | excprint(regs); |
| 421 | if (bp) { |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 422 | printf("cpu 0x%x stopped at breakpoint 0x%lx (", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | cpu, BP_NUM(bp)); |
| 424 | xmon_print_symbol(regs->nip, " ", ")\n"); |
| 425 | } |
Josh Boyer | daf8f40 | 2009-09-23 03:51:04 +0000 | [diff] [blame] | 426 | if (unrecoverable_excp(regs)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | printf("WARNING: exception is not recoverable, " |
| 428 | "can't continue\n"); |
| 429 | release_output_lock(); |
| 430 | } |
| 431 | |
Michael Ellerman | d2b496e | 2013-12-23 23:46:06 +1100 | [diff] [blame] | 432 | cpumask_set_cpu(cpu, &cpus_in_xmon); |
| 433 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | waiting: |
| 435 | secondary = 1; |
| 436 | while (secondary && !xmon_gate) { |
| 437 | if (in_xmon == 0) { |
| 438 | if (fromipi) |
| 439 | goto leave; |
| 440 | secondary = test_and_set_bit(0, &in_xmon); |
| 441 | } |
| 442 | barrier(); |
| 443 | } |
| 444 | |
| 445 | if (!secondary && !xmon_gate) { |
| 446 | /* we are the first cpu to come in */ |
| 447 | /* interrupt other cpu(s) */ |
| 448 | int ncpus = num_online_cpus(); |
| 449 | |
| 450 | xmon_owner = cpu; |
| 451 | mb(); |
| 452 | if (ncpus > 1) { |
Milton Miller | e047637 | 2011-05-10 19:29:06 +0000 | [diff] [blame] | 453 | smp_send_debugger_break(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | /* wait for other cpus to come in */ |
| 455 | for (timeout = 100000000; timeout != 0; --timeout) { |
KOSAKI Motohiro | 104699c | 2011-04-28 05:07:23 +0000 | [diff] [blame] | 456 | if (cpumask_weight(&cpus_in_xmon) >= ncpus) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | break; |
| 458 | barrier(); |
| 459 | } |
| 460 | } |
| 461 | remove_bpts(); |
| 462 | disable_surveillance(); |
| 463 | /* for breakpoint or single step, print the current instr. */ |
| 464 | if (bp || TRAP(regs) == 0xd00) |
| 465 | ppc_inst_dump(regs->nip, 1, 0); |
| 466 | printf("enter ? for help\n"); |
| 467 | mb(); |
| 468 | xmon_gate = 1; |
| 469 | barrier(); |
| 470 | } |
| 471 | |
| 472 | cmdloop: |
| 473 | while (in_xmon) { |
| 474 | if (secondary) { |
| 475 | if (cpu == xmon_owner) { |
| 476 | if (!test_and_set_bit(0, &xmon_taken)) { |
| 477 | secondary = 0; |
| 478 | continue; |
| 479 | } |
| 480 | /* missed it */ |
| 481 | while (cpu == xmon_owner) |
| 482 | barrier(); |
| 483 | } |
| 484 | barrier(); |
| 485 | } else { |
| 486 | cmd = cmds(regs); |
| 487 | if (cmd != 0) { |
| 488 | /* exiting xmon */ |
| 489 | insert_bpts(); |
| 490 | xmon_gate = 0; |
| 491 | wmb(); |
| 492 | in_xmon = 0; |
| 493 | break; |
| 494 | } |
| 495 | /* have switched to some other cpu */ |
| 496 | secondary = 1; |
| 497 | } |
| 498 | } |
| 499 | leave: |
KOSAKI Motohiro | 104699c | 2011-04-28 05:07:23 +0000 | [diff] [blame] | 500 | cpumask_clear_cpu(cpu, &cpus_in_xmon); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | xmon_fault_jmp[cpu] = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | #else |
| 503 | /* UP is simple... */ |
| 504 | if (in_xmon) { |
| 505 | printf("Exception %lx %s in xmon, returning to main loop\n", |
| 506 | regs->trap, getvecname(TRAP(regs))); |
| 507 | longjmp(xmon_fault_jmp[0], 1); |
| 508 | } |
| 509 | if (setjmp(recurse_jmp) == 0) { |
| 510 | xmon_fault_jmp[0] = recurse_jmp; |
| 511 | in_xmon = 1; |
| 512 | |
| 513 | excprint(regs); |
| 514 | bp = at_breakpoint(regs->nip); |
| 515 | if (bp) { |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 516 | printf("Stopped at breakpoint %lx (", BP_NUM(bp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | xmon_print_symbol(regs->nip, " ", ")\n"); |
| 518 | } |
Josh Boyer | daf8f40 | 2009-09-23 03:51:04 +0000 | [diff] [blame] | 519 | if (unrecoverable_excp(regs)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | printf("WARNING: exception is not recoverable, " |
| 521 | "can't continue\n"); |
| 522 | remove_bpts(); |
| 523 | disable_surveillance(); |
| 524 | /* for breakpoint or single step, print the current instr. */ |
| 525 | if (bp || TRAP(regs) == 0xd00) |
| 526 | ppc_inst_dump(regs->nip, 1, 0); |
| 527 | printf("enter ? for help\n"); |
| 528 | } |
| 529 | |
| 530 | cmd = cmds(regs); |
| 531 | |
| 532 | insert_bpts(); |
| 533 | in_xmon = 0; |
| 534 | #endif |
| 535 | |
Josh Boyer | cdd3904 | 2009-10-05 04:46:05 +0000 | [diff] [blame] | 536 | #ifdef CONFIG_BOOKE |
| 537 | if (regs->msr & MSR_DE) { |
| 538 | bp = at_breakpoint(regs->nip); |
| 539 | if (bp != NULL) { |
| 540 | regs->nip = (unsigned long) &bp->instr[0]; |
| 541 | atomic_inc(&bp->ref_count); |
| 542 | } |
| 543 | } |
| 544 | #else |
Michael Ellerman | 9f0b079 | 2011-04-07 21:56:03 +0000 | [diff] [blame] | 545 | if ((regs->msr & (MSR_IR|MSR_PR|MSR_64BIT)) == (MSR_IR|MSR_64BIT)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | bp = at_breakpoint(regs->nip); |
| 547 | if (bp != NULL) { |
| 548 | int stepped = emulate_step(regs, bp->instr[0]); |
| 549 | if (stepped == 0) { |
| 550 | regs->nip = (unsigned long) &bp->instr[0]; |
| 551 | atomic_inc(&bp->ref_count); |
| 552 | } else if (stepped < 0) { |
| 553 | printf("Couldn't single-step %s instruction\n", |
| 554 | (IS_RFID(bp->instr[0])? "rfid": "mtmsrd")); |
| 555 | } |
| 556 | } |
| 557 | } |
Josh Boyer | cdd3904 | 2009-10-05 04:46:05 +0000 | [diff] [blame] | 558 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | insert_cpu_bpts(); |
| 560 | |
Anton Blanchard | f13659e | 2007-03-21 01:48:34 +1100 | [diff] [blame] | 561 | local_irq_restore(flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | |
Paul Mackerras | 0a730ae | 2006-10-03 21:32:49 +1000 | [diff] [blame] | 563 | return cmd != 'X' && cmd != EOF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | } |
| 565 | |
| 566 | int xmon(struct pt_regs *excp) |
| 567 | { |
| 568 | struct pt_regs regs; |
| 569 | |
| 570 | if (excp == NULL) { |
Anton Vorontsov | 322b439 | 2008-12-17 10:08:55 +0000 | [diff] [blame] | 571 | ppc_save_regs(®s); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | excp = ®s; |
| 573 | } |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 574 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | return xmon_core(excp, 0); |
| 576 | } |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 577 | EXPORT_SYMBOL(xmon); |
| 578 | |
Paul Mackerras | f583ffc | 2006-10-10 11:47:07 +1000 | [diff] [blame] | 579 | irqreturn_t xmon_irq(int irq, void *d) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 580 | { |
| 581 | unsigned long flags; |
| 582 | local_irq_save(flags); |
| 583 | printf("Keyboard interrupt\n"); |
Paul Mackerras | f583ffc | 2006-10-10 11:47:07 +1000 | [diff] [blame] | 584 | xmon(get_irq_regs()); |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 585 | local_irq_restore(flags); |
| 586 | return IRQ_HANDLED; |
| 587 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | |
Arnd Bergmann | b0da985 | 2006-01-11 00:00:05 +0000 | [diff] [blame] | 589 | static int xmon_bpt(struct pt_regs *regs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | { |
| 591 | struct bpt *bp; |
| 592 | unsigned long offset; |
| 593 | |
Michael Ellerman | 9f0b079 | 2011-04-07 21:56:03 +0000 | [diff] [blame] | 594 | if ((regs->msr & (MSR_IR|MSR_PR|MSR_64BIT)) != (MSR_IR|MSR_64BIT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | return 0; |
| 596 | |
| 597 | /* Are we at the trap at bp->instr[1] for some bp? */ |
| 598 | bp = in_breakpoint_table(regs->nip, &offset); |
| 599 | if (bp != NULL && offset == 4) { |
| 600 | regs->nip = bp->address + 4; |
| 601 | atomic_dec(&bp->ref_count); |
| 602 | return 1; |
| 603 | } |
| 604 | |
| 605 | /* Are we at a breakpoint? */ |
| 606 | bp = at_breakpoint(regs->nip); |
| 607 | if (!bp) |
| 608 | return 0; |
| 609 | |
| 610 | xmon_core(regs, 0); |
| 611 | |
| 612 | return 1; |
| 613 | } |
| 614 | |
Arnd Bergmann | b0da985 | 2006-01-11 00:00:05 +0000 | [diff] [blame] | 615 | static int xmon_sstep(struct pt_regs *regs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | { |
| 617 | if (user_mode(regs)) |
| 618 | return 0; |
| 619 | xmon_core(regs, 0); |
| 620 | return 1; |
| 621 | } |
| 622 | |
Michael Neuling | 9422de3 | 2012-12-20 14:06:44 +0000 | [diff] [blame] | 623 | static int xmon_break_match(struct pt_regs *regs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | { |
Michael Ellerman | 9f0b079 | 2011-04-07 21:56:03 +0000 | [diff] [blame] | 625 | if ((regs->msr & (MSR_IR|MSR_PR|MSR_64BIT)) != (MSR_IR|MSR_64BIT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | return 0; |
Anton Blanchard | fd9648d | 2005-09-10 16:01:11 +1000 | [diff] [blame] | 627 | if (dabr.enabled == 0) |
| 628 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | xmon_core(regs, 0); |
| 630 | return 1; |
| 631 | } |
| 632 | |
Arnd Bergmann | b0da985 | 2006-01-11 00:00:05 +0000 | [diff] [blame] | 633 | static int xmon_iabr_match(struct pt_regs *regs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | { |
Michael Ellerman | 9f0b079 | 2011-04-07 21:56:03 +0000 | [diff] [blame] | 635 | if ((regs->msr & (MSR_IR|MSR_PR|MSR_64BIT)) != (MSR_IR|MSR_64BIT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | return 0; |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 637 | if (iabr == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | return 0; |
| 639 | xmon_core(regs, 0); |
| 640 | return 1; |
| 641 | } |
| 642 | |
Arnd Bergmann | b0da985 | 2006-01-11 00:00:05 +0000 | [diff] [blame] | 643 | static int xmon_ipi(struct pt_regs *regs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | { |
| 645 | #ifdef CONFIG_SMP |
KOSAKI Motohiro | 104699c | 2011-04-28 05:07:23 +0000 | [diff] [blame] | 646 | if (in_xmon && !cpumask_test_cpu(smp_processor_id(), &cpus_in_xmon)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | xmon_core(regs, 1); |
| 648 | #endif |
| 649 | return 0; |
| 650 | } |
| 651 | |
Arnd Bergmann | b0da985 | 2006-01-11 00:00:05 +0000 | [diff] [blame] | 652 | static int xmon_fault_handler(struct pt_regs *regs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | { |
| 654 | struct bpt *bp; |
| 655 | unsigned long offset; |
| 656 | |
| 657 | if (in_xmon && catch_memory_errors) |
| 658 | handle_fault(regs); /* doesn't return */ |
| 659 | |
Michael Ellerman | 9f0b079 | 2011-04-07 21:56:03 +0000 | [diff] [blame] | 660 | if ((regs->msr & (MSR_IR|MSR_PR|MSR_64BIT)) == (MSR_IR|MSR_64BIT)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | bp = in_breakpoint_table(regs->nip, &offset); |
| 662 | if (bp != NULL) { |
| 663 | regs->nip = bp->address + offset; |
| 664 | atomic_dec(&bp->ref_count); |
| 665 | } |
| 666 | } |
| 667 | |
| 668 | return 0; |
| 669 | } |
| 670 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | static struct bpt *at_breakpoint(unsigned long pc) |
| 672 | { |
| 673 | int i; |
| 674 | struct bpt *bp; |
| 675 | |
| 676 | bp = bpts; |
| 677 | for (i = 0; i < NBPTS; ++i, ++bp) |
| 678 | if (bp->enabled && pc == bp->address) |
| 679 | return bp; |
| 680 | return NULL; |
| 681 | } |
| 682 | |
| 683 | static struct bpt *in_breakpoint_table(unsigned long nip, unsigned long *offp) |
| 684 | { |
| 685 | unsigned long off; |
| 686 | |
| 687 | off = nip - (unsigned long) bpts; |
| 688 | if (off >= sizeof(bpts)) |
| 689 | return NULL; |
| 690 | off %= sizeof(struct bpt); |
| 691 | if (off != offsetof(struct bpt, instr[0]) |
| 692 | && off != offsetof(struct bpt, instr[1])) |
| 693 | return NULL; |
| 694 | *offp = off - offsetof(struct bpt, instr[0]); |
| 695 | return (struct bpt *) (nip - off); |
| 696 | } |
| 697 | |
| 698 | static struct bpt *new_breakpoint(unsigned long a) |
| 699 | { |
| 700 | struct bpt *bp; |
| 701 | |
| 702 | a &= ~3UL; |
| 703 | bp = at_breakpoint(a); |
| 704 | if (bp) |
| 705 | return bp; |
| 706 | |
| 707 | for (bp = bpts; bp < &bpts[NBPTS]; ++bp) { |
| 708 | if (!bp->enabled && atomic_read(&bp->ref_count) == 0) { |
| 709 | bp->address = a; |
| 710 | bp->instr[1] = bpinstr; |
| 711 | store_inst(&bp->instr[1]); |
| 712 | return bp; |
| 713 | } |
| 714 | } |
| 715 | |
| 716 | printf("Sorry, no free breakpoints. Please clear one first.\n"); |
| 717 | return NULL; |
| 718 | } |
| 719 | |
| 720 | static void insert_bpts(void) |
| 721 | { |
| 722 | int i; |
| 723 | struct bpt *bp; |
| 724 | |
| 725 | bp = bpts; |
| 726 | for (i = 0; i < NBPTS; ++i, ++bp) { |
| 727 | if ((bp->enabled & (BP_TRAP|BP_IABR)) == 0) |
| 728 | continue; |
| 729 | if (mread(bp->address, &bp->instr[0], 4) != 4) { |
| 730 | printf("Couldn't read instruction at %lx, " |
| 731 | "disabling breakpoint there\n", bp->address); |
| 732 | bp->enabled = 0; |
| 733 | continue; |
| 734 | } |
| 735 | if (IS_MTMSRD(bp->instr[0]) || IS_RFID(bp->instr[0])) { |
| 736 | printf("Breakpoint at %lx is on an mtmsrd or rfid " |
| 737 | "instruction, disabling it\n", bp->address); |
| 738 | bp->enabled = 0; |
| 739 | continue; |
| 740 | } |
| 741 | store_inst(&bp->instr[0]); |
| 742 | if (bp->enabled & BP_IABR) |
| 743 | continue; |
| 744 | if (mwrite(bp->address, &bpinstr, 4) != 4) { |
| 745 | printf("Couldn't write instruction at %lx, " |
| 746 | "disabling breakpoint there\n", bp->address); |
| 747 | bp->enabled &= ~BP_TRAP; |
| 748 | continue; |
| 749 | } |
| 750 | store_inst((void *)bp->address); |
| 751 | } |
| 752 | } |
| 753 | |
| 754 | static void insert_cpu_bpts(void) |
| 755 | { |
Michael Neuling | 9422de3 | 2012-12-20 14:06:44 +0000 | [diff] [blame] | 756 | struct arch_hw_breakpoint brk; |
| 757 | |
| 758 | if (dabr.enabled) { |
| 759 | brk.address = dabr.address; |
| 760 | brk.type = (dabr.enabled & HW_BRK_TYPE_DABR) | HW_BRK_TYPE_PRIV_ALL; |
| 761 | brk.len = 8; |
Paul Gortmaker | 21f5850 | 2014-04-29 15:25:17 -0400 | [diff] [blame] | 762 | __set_breakpoint(&brk); |
Michael Neuling | 9422de3 | 2012-12-20 14:06:44 +0000 | [diff] [blame] | 763 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | if (iabr && cpu_has_feature(CPU_FTR_IABR)) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 765 | mtspr(SPRN_IABR, iabr->address |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | | (iabr->enabled & (BP_IABR|BP_IABR_TE))); |
| 767 | } |
| 768 | |
| 769 | static void remove_bpts(void) |
| 770 | { |
| 771 | int i; |
| 772 | struct bpt *bp; |
| 773 | unsigned instr; |
| 774 | |
| 775 | bp = bpts; |
| 776 | for (i = 0; i < NBPTS; ++i, ++bp) { |
| 777 | if ((bp->enabled & (BP_TRAP|BP_IABR)) != BP_TRAP) |
| 778 | continue; |
| 779 | if (mread(bp->address, &instr, 4) == 4 |
| 780 | && instr == bpinstr |
| 781 | && mwrite(bp->address, &bp->instr, 4) != 4) |
| 782 | printf("Couldn't remove breakpoint at %lx\n", |
| 783 | bp->address); |
| 784 | else |
| 785 | store_inst((void *)bp->address); |
| 786 | } |
| 787 | } |
| 788 | |
| 789 | static void remove_cpu_bpts(void) |
| 790 | { |
Michael Neuling | 9422de3 | 2012-12-20 14:06:44 +0000 | [diff] [blame] | 791 | hw_breakpoint_disable(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | if (cpu_has_feature(CPU_FTR_IABR)) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 793 | mtspr(SPRN_IABR, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | } |
| 795 | |
| 796 | /* Command interpreting routine */ |
| 797 | static char *last_cmd; |
| 798 | |
| 799 | static int |
| 800 | cmds(struct pt_regs *excp) |
| 801 | { |
| 802 | int cmd = 0; |
| 803 | |
| 804 | last_cmd = NULL; |
| 805 | xmon_regs = excp; |
Olaf Hering | 26c8af5 | 2006-09-08 16:29:21 +0200 | [diff] [blame] | 806 | |
| 807 | if (!xmon_no_auto_backtrace) { |
| 808 | xmon_no_auto_backtrace = 1; |
| 809 | xmon_show_stack(excp->gpr[1], excp->link, excp->nip); |
| 810 | } |
| 811 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | for(;;) { |
| 813 | #ifdef CONFIG_SMP |
| 814 | printf("%x:", smp_processor_id()); |
| 815 | #endif /* CONFIG_SMP */ |
| 816 | printf("mon> "); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | flush_input(); |
| 818 | termch = 0; |
| 819 | cmd = skipbl(); |
| 820 | if( cmd == '\n' ) { |
| 821 | if (last_cmd == NULL) |
| 822 | continue; |
| 823 | take_input(last_cmd); |
| 824 | last_cmd = NULL; |
| 825 | cmd = inchar(); |
| 826 | } |
| 827 | switch (cmd) { |
| 828 | case 'm': |
| 829 | cmd = inchar(); |
| 830 | switch (cmd) { |
| 831 | case 'm': |
| 832 | case 's': |
| 833 | case 'd': |
| 834 | memops(cmd); |
| 835 | break; |
| 836 | case 'l': |
| 837 | memlocate(); |
| 838 | break; |
| 839 | case 'z': |
| 840 | memzcan(); |
| 841 | break; |
| 842 | case 'i': |
David Rientjes | b2b755b | 2011-03-24 15:18:15 -0700 | [diff] [blame] | 843 | show_mem(0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | break; |
| 845 | default: |
| 846 | termch = cmd; |
| 847 | memex(); |
| 848 | } |
| 849 | break; |
| 850 | case 'd': |
| 851 | dump(); |
| 852 | break; |
| 853 | case 'l': |
| 854 | symbol_lookup(); |
| 855 | break; |
| 856 | case 'r': |
| 857 | prregs(excp); /* print regs */ |
| 858 | break; |
| 859 | case 'e': |
| 860 | excprint(excp); |
| 861 | break; |
| 862 | case 'S': |
| 863 | super_regs(); |
| 864 | break; |
| 865 | case 't': |
| 866 | backtrace(excp); |
| 867 | break; |
| 868 | case 'f': |
| 869 | cacheflush(); |
| 870 | break; |
| 871 | case 's': |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 872 | if (do_spu_cmd() == 0) |
| 873 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | if (do_step(excp)) |
| 875 | return cmd; |
| 876 | break; |
| 877 | case 'x': |
| 878 | case 'X': |
Benjamin Herrenschmidt | bb6b9b2 | 2005-11-30 16:54:12 +1100 | [diff] [blame] | 879 | return cmd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | case EOF: |
Benjamin Herrenschmidt | bb6b9b2 | 2005-11-30 16:54:12 +1100 | [diff] [blame] | 881 | printf(" <no input ...>\n"); |
| 882 | mdelay(2000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | return cmd; |
| 884 | case '?': |
Ishizaki Kou | 4d404ed | 2007-07-18 19:26:40 +1000 | [diff] [blame] | 885 | xmon_puts(help_string); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | case 'b': |
| 888 | bpt_cmds(); |
| 889 | break; |
| 890 | case 'C': |
| 891 | csum(); |
| 892 | break; |
| 893 | case 'c': |
| 894 | if (cpu_cmd()) |
| 895 | return 0; |
| 896 | break; |
| 897 | case 'z': |
| 898 | bootcmds(); |
| 899 | break; |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 900 | case 'p': |
| 901 | proccall(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | break; |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 903 | #ifdef CONFIG_PPC_STD_MMU |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | case 'u': |
| 905 | dump_segments(); |
| 906 | break; |
Jimi Xenidis | 79873e8 | 2011-09-29 11:25:10 +0000 | [diff] [blame] | 907 | #elif defined(CONFIG_4xx) |
Benjamin Herrenschmidt | 5a8a1a2 | 2007-11-16 18:23:33 +1100 | [diff] [blame] | 908 | case 'u': |
| 909 | dump_tlb_44x(); |
| 910 | break; |
Jimi Xenidis | 79873e8 | 2011-09-29 11:25:10 +0000 | [diff] [blame] | 911 | #elif defined(CONFIG_PPC_BOOK3E) |
Benjamin Herrenschmidt | 0324715 | 2010-07-09 15:34:50 +1000 | [diff] [blame] | 912 | case 'u': |
| 913 | dump_tlb_book3e(); |
| 914 | break; |
| 915 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | default: |
| 917 | printf("Unrecognized command: "); |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 918 | do { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | if (' ' < cmd && cmd <= '~') |
| 920 | putchar(cmd); |
| 921 | else |
| 922 | printf("\\x%x", cmd); |
| 923 | cmd = inchar(); |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 924 | } while (cmd != '\n'); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | printf(" (type ? for help)\n"); |
| 926 | break; |
| 927 | } |
| 928 | } |
| 929 | } |
| 930 | |
Josh Boyer | cdd3904 | 2009-10-05 04:46:05 +0000 | [diff] [blame] | 931 | #ifdef CONFIG_BOOKE |
| 932 | static int do_step(struct pt_regs *regs) |
| 933 | { |
| 934 | regs->msr |= MSR_DE; |
| 935 | mtspr(SPRN_DBCR0, mfspr(SPRN_DBCR0) | DBCR0_IC | DBCR0_IDM); |
| 936 | return 1; |
| 937 | } |
| 938 | #else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 939 | /* |
| 940 | * Step a single instruction. |
| 941 | * Some instructions we emulate, others we execute with MSR_SE set. |
| 942 | */ |
| 943 | static int do_step(struct pt_regs *regs) |
| 944 | { |
| 945 | unsigned int instr; |
| 946 | int stepped; |
| 947 | |
| 948 | /* check we are in 64-bit kernel mode, translation enabled */ |
Michael Ellerman | 9f0b079 | 2011-04-07 21:56:03 +0000 | [diff] [blame] | 949 | if ((regs->msr & (MSR_64BIT|MSR_PR|MSR_IR)) == (MSR_64BIT|MSR_IR)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | if (mread(regs->nip, &instr, 4) == 4) { |
| 951 | stepped = emulate_step(regs, instr); |
| 952 | if (stepped < 0) { |
| 953 | printf("Couldn't single-step %s instruction\n", |
| 954 | (IS_RFID(instr)? "rfid": "mtmsrd")); |
| 955 | return 0; |
| 956 | } |
| 957 | if (stepped > 0) { |
| 958 | regs->trap = 0xd00 | (regs->trap & 1); |
| 959 | printf("stepped to "); |
| 960 | xmon_print_symbol(regs->nip, " ", "\n"); |
| 961 | ppc_inst_dump(regs->nip, 1, 0); |
| 962 | return 0; |
| 963 | } |
| 964 | } |
| 965 | } |
| 966 | regs->msr |= MSR_SE; |
| 967 | return 1; |
| 968 | } |
Josh Boyer | cdd3904 | 2009-10-05 04:46:05 +0000 | [diff] [blame] | 969 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | |
| 971 | static void bootcmds(void) |
| 972 | { |
| 973 | int cmd; |
| 974 | |
| 975 | cmd = inchar(); |
| 976 | if (cmd == 'r') |
| 977 | ppc_md.restart(NULL); |
| 978 | else if (cmd == 'h') |
| 979 | ppc_md.halt(); |
| 980 | else if (cmd == 'p') |
| 981 | ppc_md.power_off(); |
| 982 | } |
| 983 | |
| 984 | static int cpu_cmd(void) |
| 985 | { |
| 986 | #ifdef CONFIG_SMP |
Paul Mackerras | fd3bb91 | 2013-09-03 20:16:23 +1000 | [diff] [blame] | 987 | unsigned long cpu, first_cpu, last_cpu; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | int timeout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | |
| 990 | if (!scanhex(&cpu)) { |
| 991 | /* print cpus waiting or in xmon */ |
| 992 | printf("cpus stopped:"); |
Paul Mackerras | fd3bb91 | 2013-09-03 20:16:23 +1000 | [diff] [blame] | 993 | last_cpu = first_cpu = NR_CPUS; |
Anton Blanchard | bc1d770 | 2012-06-28 19:28:57 +0000 | [diff] [blame] | 994 | for_each_possible_cpu(cpu) { |
KOSAKI Motohiro | 104699c | 2011-04-28 05:07:23 +0000 | [diff] [blame] | 995 | if (cpumask_test_cpu(cpu, &cpus_in_xmon)) { |
Paul Mackerras | fd3bb91 | 2013-09-03 20:16:23 +1000 | [diff] [blame] | 996 | if (cpu == last_cpu + 1) { |
| 997 | last_cpu = cpu; |
| 998 | } else { |
| 999 | if (last_cpu != first_cpu) |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 1000 | printf("-0x%lx", last_cpu); |
Paul Mackerras | fd3bb91 | 2013-09-03 20:16:23 +1000 | [diff] [blame] | 1001 | last_cpu = first_cpu = cpu; |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 1002 | printf(" 0x%lx", cpu); |
Paul Mackerras | fd3bb91 | 2013-09-03 20:16:23 +1000 | [diff] [blame] | 1003 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1004 | } |
| 1005 | } |
Paul Mackerras | fd3bb91 | 2013-09-03 20:16:23 +1000 | [diff] [blame] | 1006 | if (last_cpu != first_cpu) |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 1007 | printf("-0x%lx", last_cpu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1008 | printf("\n"); |
| 1009 | return 0; |
| 1010 | } |
| 1011 | /* try to switch to cpu specified */ |
KOSAKI Motohiro | 104699c | 2011-04-28 05:07:23 +0000 | [diff] [blame] | 1012 | if (!cpumask_test_cpu(cpu, &cpus_in_xmon)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | printf("cpu 0x%x isn't in xmon\n", cpu); |
| 1014 | return 0; |
| 1015 | } |
| 1016 | xmon_taken = 0; |
| 1017 | mb(); |
| 1018 | xmon_owner = cpu; |
| 1019 | timeout = 10000000; |
| 1020 | while (!xmon_taken) { |
| 1021 | if (--timeout == 0) { |
| 1022 | if (test_and_set_bit(0, &xmon_taken)) |
| 1023 | break; |
| 1024 | /* take control back */ |
| 1025 | mb(); |
| 1026 | xmon_owner = smp_processor_id(); |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 1027 | printf("cpu 0x%x didn't take control\n", cpu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | return 0; |
| 1029 | } |
| 1030 | barrier(); |
| 1031 | } |
| 1032 | return 1; |
| 1033 | #else |
| 1034 | return 0; |
| 1035 | #endif /* CONFIG_SMP */ |
| 1036 | } |
| 1037 | |
| 1038 | static unsigned short fcstab[256] = { |
| 1039 | 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf, |
| 1040 | 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7, |
| 1041 | 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e, |
| 1042 | 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876, |
| 1043 | 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd, |
| 1044 | 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5, |
| 1045 | 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c, |
| 1046 | 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974, |
| 1047 | 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb, |
| 1048 | 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3, |
| 1049 | 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a, |
| 1050 | 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72, |
| 1051 | 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9, |
| 1052 | 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1, |
| 1053 | 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738, |
| 1054 | 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70, |
| 1055 | 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7, |
| 1056 | 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff, |
| 1057 | 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036, |
| 1058 | 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e, |
| 1059 | 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5, |
| 1060 | 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd, |
| 1061 | 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134, |
| 1062 | 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c, |
| 1063 | 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3, |
| 1064 | 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb, |
| 1065 | 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232, |
| 1066 | 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, |
| 1067 | 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1, |
| 1068 | 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9, |
| 1069 | 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330, |
| 1070 | 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78 |
| 1071 | }; |
| 1072 | |
| 1073 | #define FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff]) |
| 1074 | |
| 1075 | static void |
| 1076 | csum(void) |
| 1077 | { |
| 1078 | unsigned int i; |
| 1079 | unsigned short fcs; |
| 1080 | unsigned char v; |
| 1081 | |
| 1082 | if (!scanhex(&adrs)) |
| 1083 | return; |
| 1084 | if (!scanhex(&ncsum)) |
| 1085 | return; |
| 1086 | fcs = 0xffff; |
| 1087 | for (i = 0; i < ncsum; ++i) { |
| 1088 | if (mread(adrs+i, &v, 1) == 0) { |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 1089 | printf("csum stopped at "REG"\n", adrs+i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | break; |
| 1091 | } |
| 1092 | fcs = FCS(fcs, v); |
| 1093 | } |
| 1094 | printf("%x\n", fcs); |
| 1095 | } |
| 1096 | |
| 1097 | /* |
| 1098 | * Check if this is a suitable place to put a breakpoint. |
| 1099 | */ |
| 1100 | static long check_bp_loc(unsigned long addr) |
| 1101 | { |
| 1102 | unsigned int instr; |
| 1103 | |
| 1104 | addr &= ~3; |
Michael Ellerman | 51fae6de | 2005-12-04 18:39:15 +1100 | [diff] [blame] | 1105 | if (!is_kernel_addr(addr)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | printf("Breakpoints may only be placed at kernel addresses\n"); |
| 1107 | return 0; |
| 1108 | } |
| 1109 | if (!mread(addr, &instr, sizeof(instr))) { |
| 1110 | printf("Can't read instruction at address %lx\n", addr); |
| 1111 | return 0; |
| 1112 | } |
| 1113 | if (IS_MTMSRD(instr) || IS_RFID(instr)) { |
| 1114 | printf("Breakpoints may not be placed on mtmsrd or rfid " |
| 1115 | "instructions\n"); |
| 1116 | return 0; |
| 1117 | } |
| 1118 | return 1; |
| 1119 | } |
| 1120 | |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 1121 | static char *breakpoint_help_string = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1122 | "Breakpoint command usage:\n" |
| 1123 | "b show breakpoints\n" |
| 1124 | "b <addr> [cnt] set breakpoint at given instr addr\n" |
| 1125 | "bc clear all breakpoints\n" |
| 1126 | "bc <n/addr> clear breakpoint number n or at addr\n" |
| 1127 | "bi <addr> [cnt] set hardware instr breakpoint (POWER3/RS64 only)\n" |
| 1128 | "bd <addr> [cnt] set hardware data breakpoint\n" |
| 1129 | ""; |
| 1130 | |
| 1131 | static void |
| 1132 | bpt_cmds(void) |
| 1133 | { |
| 1134 | int cmd; |
| 1135 | unsigned long a; |
| 1136 | int mode, i; |
| 1137 | struct bpt *bp; |
| 1138 | const char badaddr[] = "Only kernel addresses are permitted " |
| 1139 | "for breakpoints\n"; |
| 1140 | |
| 1141 | cmd = inchar(); |
| 1142 | switch (cmd) { |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1143 | #ifndef CONFIG_8xx |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1144 | case 'd': /* bd - hardware data breakpoint */ |
| 1145 | mode = 7; |
| 1146 | cmd = inchar(); |
| 1147 | if (cmd == 'r') |
| 1148 | mode = 5; |
| 1149 | else if (cmd == 'w') |
| 1150 | mode = 6; |
| 1151 | else |
| 1152 | termch = cmd; |
| 1153 | dabr.address = 0; |
| 1154 | dabr.enabled = 0; |
| 1155 | if (scanhex(&dabr.address)) { |
Michael Ellerman | 51fae6de | 2005-12-04 18:39:15 +1100 | [diff] [blame] | 1156 | if (!is_kernel_addr(dabr.address)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | printf(badaddr); |
| 1158 | break; |
| 1159 | } |
Michael Neuling | 9422de3 | 2012-12-20 14:06:44 +0000 | [diff] [blame] | 1160 | dabr.address &= ~HW_BRK_TYPE_DABR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | dabr.enabled = mode | BP_DABR; |
| 1162 | } |
| 1163 | break; |
| 1164 | |
| 1165 | case 'i': /* bi - hardware instr breakpoint */ |
| 1166 | if (!cpu_has_feature(CPU_FTR_IABR)) { |
| 1167 | printf("Hardware instruction breakpoint " |
| 1168 | "not supported on this cpu\n"); |
| 1169 | break; |
| 1170 | } |
| 1171 | if (iabr) { |
| 1172 | iabr->enabled &= ~(BP_IABR | BP_IABR_TE); |
| 1173 | iabr = NULL; |
| 1174 | } |
| 1175 | if (!scanhex(&a)) |
| 1176 | break; |
| 1177 | if (!check_bp_loc(a)) |
| 1178 | break; |
| 1179 | bp = new_breakpoint(a); |
| 1180 | if (bp != NULL) { |
| 1181 | bp->enabled |= BP_IABR | BP_IABR_TE; |
| 1182 | iabr = bp; |
| 1183 | } |
| 1184 | break; |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1185 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | |
| 1187 | case 'c': |
| 1188 | if (!scanhex(&a)) { |
| 1189 | /* clear all breakpoints */ |
| 1190 | for (i = 0; i < NBPTS; ++i) |
| 1191 | bpts[i].enabled = 0; |
| 1192 | iabr = NULL; |
| 1193 | dabr.enabled = 0; |
| 1194 | printf("All breakpoints cleared\n"); |
| 1195 | break; |
| 1196 | } |
| 1197 | |
| 1198 | if (a <= NBPTS && a >= 1) { |
| 1199 | /* assume a breakpoint number */ |
| 1200 | bp = &bpts[a-1]; /* bp nums are 1 based */ |
| 1201 | } else { |
| 1202 | /* assume a breakpoint address */ |
| 1203 | bp = at_breakpoint(a); |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1204 | if (bp == NULL) { |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 1205 | printf("No breakpoint at %lx\n", a); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | break; |
| 1207 | } |
| 1208 | } |
| 1209 | |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 1210 | printf("Cleared breakpoint %lx (", BP_NUM(bp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1211 | xmon_print_symbol(bp->address, " ", ")\n"); |
| 1212 | bp->enabled = 0; |
| 1213 | break; |
| 1214 | |
| 1215 | default: |
| 1216 | termch = cmd; |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 1217 | cmd = skipbl(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1218 | if (cmd == '?') { |
| 1219 | printf(breakpoint_help_string); |
| 1220 | break; |
| 1221 | } |
| 1222 | termch = cmd; |
| 1223 | if (!scanhex(&a)) { |
| 1224 | /* print all breakpoints */ |
| 1225 | printf(" type address\n"); |
| 1226 | if (dabr.enabled) { |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1227 | printf(" data "REG" [", dabr.address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1228 | if (dabr.enabled & 1) |
| 1229 | printf("r"); |
| 1230 | if (dabr.enabled & 2) |
| 1231 | printf("w"); |
| 1232 | printf("]\n"); |
| 1233 | } |
| 1234 | for (bp = bpts; bp < &bpts[NBPTS]; ++bp) { |
| 1235 | if (!bp->enabled) |
| 1236 | continue; |
| 1237 | printf("%2x %s ", BP_NUM(bp), |
| 1238 | (bp->enabled & BP_IABR)? "inst": "trap"); |
| 1239 | xmon_print_symbol(bp->address, " ", "\n"); |
| 1240 | } |
| 1241 | break; |
| 1242 | } |
| 1243 | |
| 1244 | if (!check_bp_loc(a)) |
| 1245 | break; |
| 1246 | bp = new_breakpoint(a); |
| 1247 | if (bp != NULL) |
| 1248 | bp->enabled |= BP_TRAP; |
| 1249 | break; |
| 1250 | } |
| 1251 | } |
| 1252 | |
| 1253 | /* Very cheap human name for vector lookup. */ |
| 1254 | static |
| 1255 | const char *getvecname(unsigned long vec) |
| 1256 | { |
| 1257 | char *ret; |
| 1258 | |
| 1259 | switch (vec) { |
| 1260 | case 0x100: ret = "(System Reset)"; break; |
| 1261 | case 0x200: ret = "(Machine Check)"; break; |
| 1262 | case 0x300: ret = "(Data Access)"; break; |
| 1263 | case 0x380: ret = "(Data SLB Access)"; break; |
| 1264 | case 0x400: ret = "(Instruction Access)"; break; |
| 1265 | case 0x480: ret = "(Instruction SLB Access)"; break; |
| 1266 | case 0x500: ret = "(Hardware Interrupt)"; break; |
| 1267 | case 0x600: ret = "(Alignment)"; break; |
| 1268 | case 0x700: ret = "(Program Check)"; break; |
| 1269 | case 0x800: ret = "(FPU Unavailable)"; break; |
| 1270 | case 0x900: ret = "(Decrementer)"; break; |
Michael Ellerman | 660e034 | 2013-08-15 15:22:16 +1000 | [diff] [blame] | 1271 | case 0x980: ret = "(Hypervisor Decrementer)"; break; |
| 1272 | case 0xa00: ret = "(Doorbell)"; break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1273 | case 0xc00: ret = "(System Call)"; break; |
| 1274 | case 0xd00: ret = "(Single Step)"; break; |
Michael Ellerman | 660e034 | 2013-08-15 15:22:16 +1000 | [diff] [blame] | 1275 | case 0xe40: ret = "(Emulation Assist)"; break; |
| 1276 | case 0xe60: ret = "(HMI)"; break; |
| 1277 | case 0xe80: ret = "(Hypervisor Doorbell)"; break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1278 | case 0xf00: ret = "(Performance Monitor)"; break; |
| 1279 | case 0xf20: ret = "(Altivec Unavailable)"; break; |
| 1280 | case 0x1300: ret = "(Instruction Breakpoint)"; break; |
Michael Ellerman | 660e034 | 2013-08-15 15:22:16 +1000 | [diff] [blame] | 1281 | case 0x1500: ret = "(Denormalisation)"; break; |
| 1282 | case 0x1700: ret = "(Altivec Assist)"; break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1283 | default: ret = ""; |
| 1284 | } |
| 1285 | return ret; |
| 1286 | } |
| 1287 | |
| 1288 | static void get_function_bounds(unsigned long pc, unsigned long *startp, |
| 1289 | unsigned long *endp) |
| 1290 | { |
| 1291 | unsigned long size, offset; |
| 1292 | const char *name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1293 | |
| 1294 | *startp = *endp = 0; |
| 1295 | if (pc == 0) |
| 1296 | return; |
| 1297 | if (setjmp(bus_error_jmp) == 0) { |
| 1298 | catch_memory_errors = 1; |
| 1299 | sync(); |
Alexey Dobriyan | ffb4512 | 2007-05-08 00:28:41 -0700 | [diff] [blame] | 1300 | name = kallsyms_lookup(pc, &size, &offset, NULL, tmpstr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1301 | if (name != NULL) { |
| 1302 | *startp = pc - offset; |
| 1303 | *endp = pc - offset + size; |
| 1304 | } |
| 1305 | sync(); |
| 1306 | } |
| 1307 | catch_memory_errors = 0; |
| 1308 | } |
| 1309 | |
Benjamin Herrenschmidt | ec2b36b | 2008-04-17 14:34:59 +1000 | [diff] [blame] | 1310 | #define LRSAVE_OFFSET (STACK_FRAME_LR_SAVE * sizeof(unsigned long)) |
| 1311 | #define MARKER_OFFSET (STACK_FRAME_MARKER * sizeof(unsigned long)) |
| 1312 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1313 | static void xmon_show_stack(unsigned long sp, unsigned long lr, |
| 1314 | unsigned long pc) |
| 1315 | { |
Michael Ellerman | 0104cd6 | 2012-10-09 04:20:36 +0000 | [diff] [blame] | 1316 | int max_to_print = 64; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1317 | unsigned long ip; |
| 1318 | unsigned long newsp; |
| 1319 | unsigned long marker; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1320 | struct pt_regs regs; |
| 1321 | |
Michael Ellerman | 0104cd6 | 2012-10-09 04:20:36 +0000 | [diff] [blame] | 1322 | while (max_to_print--) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1323 | if (sp < PAGE_OFFSET) { |
| 1324 | if (sp != 0) |
| 1325 | printf("SP (%lx) is in userspace\n", sp); |
| 1326 | break; |
| 1327 | } |
| 1328 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1329 | if (!mread(sp + LRSAVE_OFFSET, &ip, sizeof(unsigned long)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1330 | || !mread(sp, &newsp, sizeof(unsigned long))) { |
| 1331 | printf("Couldn't read stack frame at %lx\n", sp); |
| 1332 | break; |
| 1333 | } |
| 1334 | |
| 1335 | /* |
| 1336 | * For the first stack frame, try to work out if |
| 1337 | * LR and/or the saved LR value in the bottommost |
| 1338 | * stack frame are valid. |
| 1339 | */ |
| 1340 | if ((pc | lr) != 0) { |
| 1341 | unsigned long fnstart, fnend; |
| 1342 | unsigned long nextip; |
| 1343 | int printip = 1; |
| 1344 | |
| 1345 | get_function_bounds(pc, &fnstart, &fnend); |
| 1346 | nextip = 0; |
| 1347 | if (newsp > sp) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1348 | mread(newsp + LRSAVE_OFFSET, &nextip, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1349 | sizeof(unsigned long)); |
| 1350 | if (lr == ip) { |
| 1351 | if (lr < PAGE_OFFSET |
| 1352 | || (fnstart <= lr && lr < fnend)) |
| 1353 | printip = 0; |
| 1354 | } else if (lr == nextip) { |
| 1355 | printip = 0; |
| 1356 | } else if (lr >= PAGE_OFFSET |
| 1357 | && !(fnstart <= lr && lr < fnend)) { |
| 1358 | printf("[link register ] "); |
| 1359 | xmon_print_symbol(lr, " ", "\n"); |
| 1360 | } |
| 1361 | if (printip) { |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1362 | printf("["REG"] ", sp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | xmon_print_symbol(ip, " ", " (unreliable)\n"); |
| 1364 | } |
| 1365 | pc = lr = 0; |
| 1366 | |
| 1367 | } else { |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1368 | printf("["REG"] ", sp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1369 | xmon_print_symbol(ip, " ", "\n"); |
| 1370 | } |
| 1371 | |
| 1372 | /* Look for "regshere" marker to see if this is |
| 1373 | an exception frame. */ |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1374 | if (mread(sp + MARKER_OFFSET, &marker, sizeof(unsigned long)) |
Benjamin Herrenschmidt | ec2b36b | 2008-04-17 14:34:59 +1000 | [diff] [blame] | 1375 | && marker == STACK_FRAME_REGS_MARKER) { |
Michael Ellerman | c4de380 | 2012-10-09 04:20:35 +0000 | [diff] [blame] | 1376 | if (mread(sp + STACK_FRAME_OVERHEAD, ®s, sizeof(regs)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1377 | != sizeof(regs)) { |
| 1378 | printf("Couldn't read registers at %lx\n", |
Michael Ellerman | c4de380 | 2012-10-09 04:20:35 +0000 | [diff] [blame] | 1379 | sp + STACK_FRAME_OVERHEAD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1380 | break; |
| 1381 | } |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 1382 | printf("--- Exception: %lx %s at ", regs.trap, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1383 | getvecname(TRAP(®s))); |
| 1384 | pc = regs.nip; |
| 1385 | lr = regs.link; |
| 1386 | xmon_print_symbol(pc, " ", "\n"); |
| 1387 | } |
| 1388 | |
| 1389 | if (newsp == 0) |
| 1390 | break; |
| 1391 | |
| 1392 | sp = newsp; |
Michael Ellerman | 0104cd6 | 2012-10-09 04:20:36 +0000 | [diff] [blame] | 1393 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1394 | } |
| 1395 | |
| 1396 | static void backtrace(struct pt_regs *excp) |
| 1397 | { |
| 1398 | unsigned long sp; |
| 1399 | |
| 1400 | if (scanhex(&sp)) |
| 1401 | xmon_show_stack(sp, 0, 0); |
| 1402 | else |
| 1403 | xmon_show_stack(excp->gpr[1], excp->link, excp->nip); |
| 1404 | scannl(); |
| 1405 | } |
| 1406 | |
| 1407 | static void print_bug_trap(struct pt_regs *regs) |
| 1408 | { |
Paul Mackerras | ebdba9a | 2008-10-31 21:34:09 +1100 | [diff] [blame] | 1409 | #ifdef CONFIG_BUG |
Jeremy Fitzhardinge | 73c9cea | 2006-12-08 03:30:41 -0800 | [diff] [blame] | 1410 | const struct bug_entry *bug; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | unsigned long addr; |
| 1412 | |
| 1413 | if (regs->msr & MSR_PR) |
| 1414 | return; /* not in kernel */ |
| 1415 | addr = regs->nip; /* address of trap instruction */ |
| 1416 | if (addr < PAGE_OFFSET) |
| 1417 | return; |
| 1418 | bug = find_bug(regs->nip); |
| 1419 | if (bug == NULL) |
| 1420 | return; |
Jeremy Fitzhardinge | 73c9cea | 2006-12-08 03:30:41 -0800 | [diff] [blame] | 1421 | if (is_warning_bug(bug)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1422 | return; |
| 1423 | |
Stephen Rothwell | 0a7c7ef | 2007-03-04 17:05:34 +1100 | [diff] [blame] | 1424 | #ifdef CONFIG_DEBUG_BUGVERBOSE |
Jeremy Fitzhardinge | 73c9cea | 2006-12-08 03:30:41 -0800 | [diff] [blame] | 1425 | printf("kernel BUG at %s:%u!\n", |
| 1426 | bug->file, bug->line); |
Stephen Rothwell | 0a7c7ef | 2007-03-04 17:05:34 +1100 | [diff] [blame] | 1427 | #else |
| 1428 | printf("kernel BUG at %p!\n", (void *)bug->bug_addr); |
| 1429 | #endif |
Paul Mackerras | ebdba9a | 2008-10-31 21:34:09 +1100 | [diff] [blame] | 1430 | #endif /* CONFIG_BUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1431 | } |
| 1432 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1433 | static void excprint(struct pt_regs *fp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1434 | { |
| 1435 | unsigned long trap; |
| 1436 | |
| 1437 | #ifdef CONFIG_SMP |
| 1438 | printf("cpu 0x%x: ", smp_processor_id()); |
| 1439 | #endif /* CONFIG_SMP */ |
| 1440 | |
| 1441 | trap = TRAP(fp); |
| 1442 | printf("Vector: %lx %s at [%lx]\n", fp->trap, getvecname(trap), fp); |
| 1443 | printf(" pc: "); |
| 1444 | xmon_print_symbol(fp->nip, ": ", "\n"); |
| 1445 | |
| 1446 | printf(" lr: ", fp->link); |
| 1447 | xmon_print_symbol(fp->link, ": ", "\n"); |
| 1448 | |
| 1449 | printf(" sp: %lx\n", fp->gpr[1]); |
| 1450 | printf(" msr: %lx\n", fp->msr); |
| 1451 | |
Aneesh Kumar K.V | ce54152 | 2013-04-28 09:37:26 +0000 | [diff] [blame] | 1452 | if (trap == 0x300 || trap == 0x380 || trap == 0x600 || trap == 0x200) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | printf(" dar: %lx\n", fp->dar); |
| 1454 | if (trap != 0x380) |
| 1455 | printf(" dsisr: %lx\n", fp->dsisr); |
| 1456 | } |
| 1457 | |
| 1458 | printf(" current = 0x%lx\n", current); |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1459 | #ifdef CONFIG_PPC64 |
Benjamin Herrenschmidt | 7230c56 | 2012-03-06 18:27:59 +1100 | [diff] [blame] | 1460 | printf(" paca = 0x%lx\t softe: %d\t irq_happened: 0x%02x\n", |
| 1461 | local_paca, local_paca->soft_enabled, local_paca->irq_happened); |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1462 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | if (current) { |
| 1464 | printf(" pid = %ld, comm = %s\n", |
| 1465 | current->pid, current->comm); |
| 1466 | } |
| 1467 | |
| 1468 | if (trap == 0x700) |
| 1469 | print_bug_trap(fp); |
| 1470 | } |
| 1471 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1472 | static void prregs(struct pt_regs *fp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1473 | { |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1474 | int n, trap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1475 | unsigned long base; |
| 1476 | struct pt_regs regs; |
| 1477 | |
| 1478 | if (scanhex(&base)) { |
| 1479 | if (setjmp(bus_error_jmp) == 0) { |
| 1480 | catch_memory_errors = 1; |
| 1481 | sync(); |
| 1482 | regs = *(struct pt_regs *)base; |
| 1483 | sync(); |
| 1484 | __delay(200); |
| 1485 | } else { |
| 1486 | catch_memory_errors = 0; |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1487 | printf("*** Error reading registers from "REG"\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1488 | base); |
| 1489 | return; |
| 1490 | } |
| 1491 | catch_memory_errors = 0; |
| 1492 | fp = ®s; |
| 1493 | } |
| 1494 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1495 | #ifdef CONFIG_PPC64 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1496 | if (FULL_REGS(fp)) { |
| 1497 | for (n = 0; n < 16; ++n) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1498 | printf("R%.2ld = "REG" R%.2ld = "REG"\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1499 | n, fp->gpr[n], n+16, fp->gpr[n+16]); |
| 1500 | } else { |
| 1501 | for (n = 0; n < 7; ++n) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1502 | printf("R%.2ld = "REG" R%.2ld = "REG"\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1503 | n, fp->gpr[n], n+7, fp->gpr[n+7]); |
| 1504 | } |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1505 | #else |
| 1506 | for (n = 0; n < 32; ++n) { |
| 1507 | printf("R%.2d = %.8x%s", n, fp->gpr[n], |
| 1508 | (n & 3) == 3? "\n": " "); |
| 1509 | if (n == 12 && !FULL_REGS(fp)) { |
| 1510 | printf("\n"); |
| 1511 | break; |
| 1512 | } |
| 1513 | } |
| 1514 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1515 | printf("pc = "); |
| 1516 | xmon_print_symbol(fp->nip, " ", "\n"); |
Paul Mackerras | 48404f2 | 2011-05-01 19:48:20 +0000 | [diff] [blame] | 1517 | if (TRAP(fp) != 0xc00 && cpu_has_feature(CPU_FTR_CFAR)) { |
| 1518 | printf("cfar= "); |
| 1519 | xmon_print_symbol(fp->orig_gpr3, " ", "\n"); |
| 1520 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1521 | printf("lr = "); |
| 1522 | xmon_print_symbol(fp->link, " ", "\n"); |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1523 | printf("msr = "REG" cr = %.8lx\n", fp->msr, fp->ccr); |
| 1524 | printf("ctr = "REG" xer = "REG" trap = %4lx\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1525 | fp->ctr, fp->xer, fp->trap); |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1526 | trap = TRAP(fp); |
| 1527 | if (trap == 0x300 || trap == 0x380 || trap == 0x600) |
| 1528 | printf("dar = "REG" dsisr = %.8lx\n", fp->dar, fp->dsisr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1529 | } |
| 1530 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1531 | static void cacheflush(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1532 | { |
| 1533 | int cmd; |
| 1534 | unsigned long nflush; |
| 1535 | |
| 1536 | cmd = inchar(); |
| 1537 | if (cmd != 'i') |
| 1538 | termch = cmd; |
| 1539 | scanhex((void *)&adrs); |
| 1540 | if (termch != '\n') |
| 1541 | termch = 0; |
| 1542 | nflush = 1; |
| 1543 | scanhex(&nflush); |
| 1544 | nflush = (nflush + L1_CACHE_BYTES - 1) / L1_CACHE_BYTES; |
| 1545 | if (setjmp(bus_error_jmp) == 0) { |
| 1546 | catch_memory_errors = 1; |
| 1547 | sync(); |
| 1548 | |
| 1549 | if (cmd != 'i') { |
| 1550 | for (; nflush > 0; --nflush, adrs += L1_CACHE_BYTES) |
| 1551 | cflush((void *) adrs); |
| 1552 | } else { |
| 1553 | for (; nflush > 0; --nflush, adrs += L1_CACHE_BYTES) |
| 1554 | cinval((void *) adrs); |
| 1555 | } |
| 1556 | sync(); |
| 1557 | /* wait a little while to see if we get a machine check */ |
| 1558 | __delay(200); |
| 1559 | } |
| 1560 | catch_memory_errors = 0; |
| 1561 | } |
| 1562 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1563 | static unsigned long |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1564 | read_spr(int n) |
| 1565 | { |
| 1566 | unsigned int instrs[2]; |
| 1567 | unsigned long (*code)(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1568 | unsigned long ret = -1UL; |
Paul Mackerras | 548cceb | 2005-11-11 22:36:34 +1100 | [diff] [blame] | 1569 | #ifdef CONFIG_PPC64 |
| 1570 | unsigned long opd[3]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1571 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | opd[0] = (unsigned long)instrs; |
| 1573 | opd[1] = 0; |
| 1574 | opd[2] = 0; |
Paul Mackerras | 548cceb | 2005-11-11 22:36:34 +1100 | [diff] [blame] | 1575 | code = (unsigned long (*)(void)) opd; |
| 1576 | #else |
| 1577 | code = (unsigned long (*)(void)) instrs; |
| 1578 | #endif |
| 1579 | |
| 1580 | /* mfspr r3,n; blr */ |
| 1581 | instrs[0] = 0x7c6002a6 + ((n & 0x1F) << 16) + ((n & 0x3e0) << 6); |
| 1582 | instrs[1] = 0x4e800020; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1583 | store_inst(instrs); |
| 1584 | store_inst(instrs+1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1585 | |
| 1586 | if (setjmp(bus_error_jmp) == 0) { |
| 1587 | catch_memory_errors = 1; |
| 1588 | sync(); |
| 1589 | |
| 1590 | ret = code(); |
| 1591 | |
| 1592 | sync(); |
| 1593 | /* wait a little while to see if we get a machine check */ |
| 1594 | __delay(200); |
| 1595 | n = size; |
| 1596 | } |
| 1597 | |
| 1598 | return ret; |
| 1599 | } |
| 1600 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1601 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1602 | write_spr(int n, unsigned long val) |
| 1603 | { |
| 1604 | unsigned int instrs[2]; |
| 1605 | unsigned long (*code)(unsigned long); |
Paul Mackerras | 548cceb | 2005-11-11 22:36:34 +1100 | [diff] [blame] | 1606 | #ifdef CONFIG_PPC64 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1607 | unsigned long opd[3]; |
| 1608 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1609 | opd[0] = (unsigned long)instrs; |
| 1610 | opd[1] = 0; |
| 1611 | opd[2] = 0; |
Paul Mackerras | 548cceb | 2005-11-11 22:36:34 +1100 | [diff] [blame] | 1612 | code = (unsigned long (*)(unsigned long)) opd; |
| 1613 | #else |
| 1614 | code = (unsigned long (*)(unsigned long)) instrs; |
| 1615 | #endif |
| 1616 | |
| 1617 | instrs[0] = 0x7c6003a6 + ((n & 0x1F) << 16) + ((n & 0x3e0) << 6); |
| 1618 | instrs[1] = 0x4e800020; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1619 | store_inst(instrs); |
| 1620 | store_inst(instrs+1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1621 | |
| 1622 | if (setjmp(bus_error_jmp) == 0) { |
| 1623 | catch_memory_errors = 1; |
| 1624 | sync(); |
| 1625 | |
| 1626 | code(val); |
| 1627 | |
| 1628 | sync(); |
| 1629 | /* wait a little while to see if we get a machine check */ |
| 1630 | __delay(200); |
| 1631 | n = size; |
| 1632 | } |
| 1633 | } |
| 1634 | |
| 1635 | static unsigned long regno; |
| 1636 | extern char exc_prolog; |
| 1637 | extern char dec_exc; |
| 1638 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1639 | static void super_regs(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1640 | { |
| 1641 | int cmd; |
| 1642 | unsigned long val; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1643 | |
| 1644 | cmd = skipbl(); |
| 1645 | if (cmd == '\n') { |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 1646 | unsigned long sp, toc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1647 | asm("mr %0,1" : "=r" (sp) :); |
| 1648 | asm("mr %0,2" : "=r" (toc) :); |
| 1649 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1650 | printf("msr = "REG" sprg0= "REG"\n", |
| 1651 | mfmsr(), mfspr(SPRN_SPRG0)); |
| 1652 | printf("pvr = "REG" sprg1= "REG"\n", |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 1653 | mfspr(SPRN_PVR), mfspr(SPRN_SPRG1)); |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1654 | printf("dec = "REG" sprg2= "REG"\n", |
| 1655 | mfspr(SPRN_DEC), mfspr(SPRN_SPRG2)); |
| 1656 | printf("sp = "REG" sprg3= "REG"\n", sp, mfspr(SPRN_SPRG3)); |
| 1657 | printf("toc = "REG" dar = "REG"\n", toc, mfspr(SPRN_DAR)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1658 | |
| 1659 | return; |
| 1660 | } |
| 1661 | |
| 1662 | scanhex(®no); |
| 1663 | switch (cmd) { |
| 1664 | case 'w': |
| 1665 | val = read_spr(regno); |
| 1666 | scanhex(&val); |
| 1667 | write_spr(regno, val); |
| 1668 | /* fall through */ |
| 1669 | case 'r': |
| 1670 | printf("spr %lx = %lx\n", regno, read_spr(regno)); |
| 1671 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1672 | } |
| 1673 | scannl(); |
| 1674 | } |
| 1675 | |
| 1676 | /* |
| 1677 | * Stuff for reading and writing memory safely |
| 1678 | */ |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1679 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1680 | mread(unsigned long adrs, void *buf, int size) |
| 1681 | { |
| 1682 | volatile int n; |
| 1683 | char *p, *q; |
| 1684 | |
| 1685 | n = 0; |
| 1686 | if (setjmp(bus_error_jmp) == 0) { |
| 1687 | catch_memory_errors = 1; |
| 1688 | sync(); |
| 1689 | p = (char *)adrs; |
| 1690 | q = (char *)buf; |
| 1691 | switch (size) { |
| 1692 | case 2: |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1693 | *(u16 *)q = *(u16 *)p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1694 | break; |
| 1695 | case 4: |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1696 | *(u32 *)q = *(u32 *)p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1697 | break; |
| 1698 | case 8: |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1699 | *(u64 *)q = *(u64 *)p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1700 | break; |
| 1701 | default: |
| 1702 | for( ; n < size; ++n) { |
| 1703 | *q++ = *p++; |
| 1704 | sync(); |
| 1705 | } |
| 1706 | } |
| 1707 | sync(); |
| 1708 | /* wait a little while to see if we get a machine check */ |
| 1709 | __delay(200); |
| 1710 | n = size; |
| 1711 | } |
| 1712 | catch_memory_errors = 0; |
| 1713 | return n; |
| 1714 | } |
| 1715 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1716 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1717 | mwrite(unsigned long adrs, void *buf, int size) |
| 1718 | { |
| 1719 | volatile int n; |
| 1720 | char *p, *q; |
| 1721 | |
| 1722 | n = 0; |
| 1723 | if (setjmp(bus_error_jmp) == 0) { |
| 1724 | catch_memory_errors = 1; |
| 1725 | sync(); |
| 1726 | p = (char *) adrs; |
| 1727 | q = (char *) buf; |
| 1728 | switch (size) { |
| 1729 | case 2: |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1730 | *(u16 *)p = *(u16 *)q; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1731 | break; |
| 1732 | case 4: |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1733 | *(u32 *)p = *(u32 *)q; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1734 | break; |
| 1735 | case 8: |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1736 | *(u64 *)p = *(u64 *)q; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1737 | break; |
| 1738 | default: |
| 1739 | for ( ; n < size; ++n) { |
| 1740 | *p++ = *q++; |
| 1741 | sync(); |
| 1742 | } |
| 1743 | } |
| 1744 | sync(); |
| 1745 | /* wait a little while to see if we get a machine check */ |
| 1746 | __delay(200); |
| 1747 | n = size; |
| 1748 | } else { |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 1749 | printf("*** Error writing address "REG"\n", adrs + n); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1750 | } |
| 1751 | catch_memory_errors = 0; |
| 1752 | return n; |
| 1753 | } |
| 1754 | |
| 1755 | static int fault_type; |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1756 | static int fault_except; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1757 | static char *fault_chars[] = { "--", "**", "##" }; |
| 1758 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1759 | static int handle_fault(struct pt_regs *regs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1760 | { |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1761 | fault_except = TRAP(regs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1762 | switch (TRAP(regs)) { |
| 1763 | case 0x200: |
| 1764 | fault_type = 0; |
| 1765 | break; |
| 1766 | case 0x300: |
| 1767 | case 0x380: |
| 1768 | fault_type = 1; |
| 1769 | break; |
| 1770 | default: |
| 1771 | fault_type = 2; |
| 1772 | } |
| 1773 | |
| 1774 | longjmp(bus_error_jmp, 1); |
| 1775 | |
| 1776 | return 0; |
| 1777 | } |
| 1778 | |
| 1779 | #define SWAP(a, b, t) ((t) = (a), (a) = (b), (b) = (t)) |
| 1780 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1781 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1782 | byterev(unsigned char *val, int size) |
| 1783 | { |
| 1784 | int t; |
| 1785 | |
| 1786 | switch (size) { |
| 1787 | case 2: |
| 1788 | SWAP(val[0], val[1], t); |
| 1789 | break; |
| 1790 | case 4: |
| 1791 | SWAP(val[0], val[3], t); |
| 1792 | SWAP(val[1], val[2], t); |
| 1793 | break; |
| 1794 | case 8: /* is there really any use for this? */ |
| 1795 | SWAP(val[0], val[7], t); |
| 1796 | SWAP(val[1], val[6], t); |
| 1797 | SWAP(val[2], val[5], t); |
| 1798 | SWAP(val[3], val[4], t); |
| 1799 | break; |
| 1800 | } |
| 1801 | } |
| 1802 | |
| 1803 | static int brev; |
| 1804 | static int mnoread; |
| 1805 | |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 1806 | static char *memex_help_string = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1807 | "Memory examine command usage:\n" |
| 1808 | "m [addr] [flags] examine/change memory\n" |
| 1809 | " addr is optional. will start where left off.\n" |
| 1810 | " flags may include chars from this set:\n" |
| 1811 | " b modify by bytes (default)\n" |
| 1812 | " w modify by words (2 byte)\n" |
| 1813 | " l modify by longs (4 byte)\n" |
| 1814 | " d modify by doubleword (8 byte)\n" |
| 1815 | " r toggle reverse byte order mode\n" |
| 1816 | " n do not read memory (for i/o spaces)\n" |
| 1817 | " . ok to read (default)\n" |
| 1818 | "NOTE: flags are saved as defaults\n" |
| 1819 | ""; |
| 1820 | |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 1821 | static char *memex_subcmd_help_string = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1822 | "Memory examine subcommands:\n" |
| 1823 | " hexval write this val to current location\n" |
| 1824 | " 'string' write chars from string to this location\n" |
| 1825 | " ' increment address\n" |
| 1826 | " ^ decrement address\n" |
| 1827 | " / increment addr by 0x10. //=0x100, ///=0x1000, etc\n" |
| 1828 | " \\ decrement addr by 0x10. \\\\=0x100, \\\\\\=0x1000, etc\n" |
| 1829 | " ` clear no-read flag\n" |
| 1830 | " ; stay at this addr\n" |
| 1831 | " v change to byte mode\n" |
| 1832 | " w change to word (2 byte) mode\n" |
| 1833 | " l change to long (4 byte) mode\n" |
| 1834 | " u change to doubleword (8 byte) mode\n" |
| 1835 | " m addr change current addr\n" |
| 1836 | " n toggle no-read flag\n" |
| 1837 | " r toggle byte reverse flag\n" |
| 1838 | " < count back up count bytes\n" |
| 1839 | " > count skip forward count bytes\n" |
| 1840 | " x exit this mode\n" |
| 1841 | ""; |
| 1842 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1843 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1844 | memex(void) |
| 1845 | { |
| 1846 | int cmd, inc, i, nslash; |
| 1847 | unsigned long n; |
| 1848 | unsigned char val[16]; |
| 1849 | |
| 1850 | scanhex((void *)&adrs); |
| 1851 | cmd = skipbl(); |
| 1852 | if (cmd == '?') { |
| 1853 | printf(memex_help_string); |
| 1854 | return; |
| 1855 | } else { |
| 1856 | termch = cmd; |
| 1857 | } |
| 1858 | last_cmd = "m\n"; |
| 1859 | while ((cmd = skipbl()) != '\n') { |
| 1860 | switch( cmd ){ |
| 1861 | case 'b': size = 1; break; |
| 1862 | case 'w': size = 2; break; |
| 1863 | case 'l': size = 4; break; |
| 1864 | case 'd': size = 8; break; |
| 1865 | case 'r': brev = !brev; break; |
| 1866 | case 'n': mnoread = 1; break; |
| 1867 | case '.': mnoread = 0; break; |
| 1868 | } |
| 1869 | } |
| 1870 | if( size <= 0 ) |
| 1871 | size = 1; |
| 1872 | else if( size > 8 ) |
| 1873 | size = 8; |
| 1874 | for(;;){ |
| 1875 | if (!mnoread) |
| 1876 | n = mread(adrs, val, size); |
Paul Mackerras | e1449ed | 2005-11-10 14:30:20 +1100 | [diff] [blame] | 1877 | printf(REG"%c", adrs, brev? 'r': ' '); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1878 | if (!mnoread) { |
| 1879 | if (brev) |
| 1880 | byterev(val, size); |
| 1881 | putchar(' '); |
| 1882 | for (i = 0; i < n; ++i) |
| 1883 | printf("%.2x", val[i]); |
| 1884 | for (; i < size; ++i) |
| 1885 | printf("%s", fault_chars[fault_type]); |
| 1886 | } |
| 1887 | putchar(' '); |
| 1888 | inc = size; |
| 1889 | nslash = 0; |
| 1890 | for(;;){ |
| 1891 | if( scanhex(&n) ){ |
| 1892 | for (i = 0; i < size; ++i) |
| 1893 | val[i] = n >> (i * 8); |
| 1894 | if (!brev) |
| 1895 | byterev(val, size); |
| 1896 | mwrite(adrs, val, size); |
| 1897 | inc = size; |
| 1898 | } |
| 1899 | cmd = skipbl(); |
| 1900 | if (cmd == '\n') |
| 1901 | break; |
| 1902 | inc = 0; |
| 1903 | switch (cmd) { |
| 1904 | case '\'': |
| 1905 | for(;;){ |
| 1906 | n = inchar(); |
| 1907 | if( n == '\\' ) |
| 1908 | n = bsesc(); |
| 1909 | else if( n == '\'' ) |
| 1910 | break; |
| 1911 | for (i = 0; i < size; ++i) |
| 1912 | val[i] = n >> (i * 8); |
| 1913 | if (!brev) |
| 1914 | byterev(val, size); |
| 1915 | mwrite(adrs, val, size); |
| 1916 | adrs += size; |
| 1917 | } |
| 1918 | adrs -= size; |
| 1919 | inc = size; |
| 1920 | break; |
| 1921 | case ',': |
| 1922 | adrs += size; |
| 1923 | break; |
| 1924 | case '.': |
| 1925 | mnoread = 0; |
| 1926 | break; |
| 1927 | case ';': |
| 1928 | break; |
| 1929 | case 'x': |
| 1930 | case EOF: |
| 1931 | scannl(); |
| 1932 | return; |
| 1933 | case 'b': |
| 1934 | case 'v': |
| 1935 | size = 1; |
| 1936 | break; |
| 1937 | case 'w': |
| 1938 | size = 2; |
| 1939 | break; |
| 1940 | case 'l': |
| 1941 | size = 4; |
| 1942 | break; |
| 1943 | case 'u': |
| 1944 | size = 8; |
| 1945 | break; |
| 1946 | case '^': |
| 1947 | adrs -= size; |
| 1948 | break; |
| 1949 | break; |
| 1950 | case '/': |
| 1951 | if (nslash > 0) |
| 1952 | adrs -= 1 << nslash; |
| 1953 | else |
| 1954 | nslash = 0; |
| 1955 | nslash += 4; |
| 1956 | adrs += 1 << nslash; |
| 1957 | break; |
| 1958 | case '\\': |
| 1959 | if (nslash < 0) |
| 1960 | adrs += 1 << -nslash; |
| 1961 | else |
| 1962 | nslash = 0; |
| 1963 | nslash -= 4; |
| 1964 | adrs -= 1 << -nslash; |
| 1965 | break; |
| 1966 | case 'm': |
| 1967 | scanhex((void *)&adrs); |
| 1968 | break; |
| 1969 | case 'n': |
| 1970 | mnoread = 1; |
| 1971 | break; |
| 1972 | case 'r': |
| 1973 | brev = !brev; |
| 1974 | break; |
| 1975 | case '<': |
| 1976 | n = size; |
| 1977 | scanhex(&n); |
| 1978 | adrs -= n; |
| 1979 | break; |
| 1980 | case '>': |
| 1981 | n = size; |
| 1982 | scanhex(&n); |
| 1983 | adrs += n; |
| 1984 | break; |
| 1985 | case '?': |
| 1986 | printf(memex_subcmd_help_string); |
| 1987 | break; |
| 1988 | } |
| 1989 | } |
| 1990 | adrs += inc; |
| 1991 | } |
| 1992 | } |
| 1993 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 1994 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1995 | bsesc(void) |
| 1996 | { |
| 1997 | int c; |
| 1998 | |
| 1999 | c = inchar(); |
| 2000 | switch( c ){ |
| 2001 | case 'n': c = '\n'; break; |
| 2002 | case 'r': c = '\r'; break; |
| 2003 | case 'b': c = '\b'; break; |
| 2004 | case 't': c = '\t'; break; |
| 2005 | } |
| 2006 | return c; |
| 2007 | } |
| 2008 | |
Olaf Hering | 7e5b593 | 2006-03-08 20:40:28 +0100 | [diff] [blame] | 2009 | static void xmon_rawdump (unsigned long adrs, long ndump) |
| 2010 | { |
| 2011 | long n, m, r, nr; |
| 2012 | unsigned char temp[16]; |
| 2013 | |
| 2014 | for (n = ndump; n > 0;) { |
| 2015 | r = n < 16? n: 16; |
| 2016 | nr = mread(adrs, temp, r); |
| 2017 | adrs += nr; |
| 2018 | for (m = 0; m < r; ++m) { |
| 2019 | if (m < nr) |
| 2020 | printf("%.2x", temp[m]); |
| 2021 | else |
| 2022 | printf("%s", fault_chars[fault_type]); |
| 2023 | } |
| 2024 | n -= r; |
| 2025 | if (nr < r) |
| 2026 | break; |
| 2027 | } |
| 2028 | printf("\n"); |
| 2029 | } |
| 2030 | |
Michael Ellerman | ddadb6b | 2012-09-13 23:01:31 +0000 | [diff] [blame] | 2031 | #ifdef CONFIG_PPC64 |
| 2032 | static void dump_one_paca(int cpu) |
| 2033 | { |
| 2034 | struct paca_struct *p; |
| 2035 | |
| 2036 | if (setjmp(bus_error_jmp) != 0) { |
| 2037 | printf("*** Error dumping paca for cpu 0x%x!\n", cpu); |
| 2038 | return; |
| 2039 | } |
| 2040 | |
| 2041 | catch_memory_errors = 1; |
| 2042 | sync(); |
| 2043 | |
| 2044 | p = &paca[cpu]; |
| 2045 | |
| 2046 | printf("paca for cpu 0x%x @ %p:\n", cpu, p); |
| 2047 | |
| 2048 | printf(" %-*s = %s\n", 16, "possible", cpu_possible(cpu) ? "yes" : "no"); |
| 2049 | printf(" %-*s = %s\n", 16, "present", cpu_present(cpu) ? "yes" : "no"); |
| 2050 | printf(" %-*s = %s\n", 16, "online", cpu_online(cpu) ? "yes" : "no"); |
| 2051 | |
| 2052 | #define DUMP(paca, name, format) \ |
| 2053 | printf(" %-*s = %#-*"format"\t(0x%lx)\n", 16, #name, 18, paca->name, \ |
| 2054 | offsetof(struct paca_struct, name)); |
| 2055 | |
| 2056 | DUMP(p, lock_token, "x"); |
| 2057 | DUMP(p, paca_index, "x"); |
| 2058 | DUMP(p, kernel_toc, "lx"); |
| 2059 | DUMP(p, kernelbase, "lx"); |
| 2060 | DUMP(p, kernel_msr, "lx"); |
| 2061 | #ifdef CONFIG_PPC_STD_MMU_64 |
| 2062 | DUMP(p, stab_real, "lx"); |
| 2063 | DUMP(p, stab_addr, "lx"); |
| 2064 | #endif |
| 2065 | DUMP(p, emergency_sp, "p"); |
Mahesh Salgaonkar | 729b0f7 | 2013-10-30 20:04:00 +0530 | [diff] [blame] | 2066 | #ifdef CONFIG_PPC_BOOK3S_64 |
| 2067 | DUMP(p, mc_emergency_sp, "p"); |
| 2068 | DUMP(p, in_mce, "x"); |
| 2069 | #endif |
Michael Ellerman | ddadb6b | 2012-09-13 23:01:31 +0000 | [diff] [blame] | 2070 | DUMP(p, data_offset, "lx"); |
| 2071 | DUMP(p, hw_cpu_id, "x"); |
| 2072 | DUMP(p, cpu_start, "x"); |
| 2073 | DUMP(p, kexec_state, "x"); |
| 2074 | DUMP(p, __current, "p"); |
| 2075 | DUMP(p, kstack, "lx"); |
| 2076 | DUMP(p, stab_rr, "lx"); |
| 2077 | DUMP(p, saved_r1, "lx"); |
| 2078 | DUMP(p, trap_save, "x"); |
| 2079 | DUMP(p, soft_enabled, "x"); |
| 2080 | DUMP(p, irq_happened, "x"); |
| 2081 | DUMP(p, io_sync, "x"); |
| 2082 | DUMP(p, irq_work_pending, "x"); |
| 2083 | DUMP(p, nap_state_lost, "x"); |
| 2084 | |
| 2085 | #undef DUMP |
| 2086 | |
| 2087 | catch_memory_errors = 0; |
| 2088 | sync(); |
| 2089 | } |
| 2090 | |
| 2091 | static void dump_all_pacas(void) |
| 2092 | { |
| 2093 | int cpu; |
| 2094 | |
| 2095 | if (num_possible_cpus() == 0) { |
| 2096 | printf("No possible cpus, use 'dp #' to dump individual cpus\n"); |
| 2097 | return; |
| 2098 | } |
| 2099 | |
| 2100 | for_each_possible_cpu(cpu) |
| 2101 | dump_one_paca(cpu); |
| 2102 | } |
| 2103 | |
| 2104 | static void dump_pacas(void) |
| 2105 | { |
| 2106 | unsigned long num; |
| 2107 | int c; |
| 2108 | |
| 2109 | c = inchar(); |
| 2110 | if (c == 'a') { |
| 2111 | dump_all_pacas(); |
| 2112 | return; |
| 2113 | } |
| 2114 | |
| 2115 | termch = c; /* Put c back, it wasn't 'a' */ |
| 2116 | |
| 2117 | if (scanhex(&num)) |
| 2118 | dump_one_paca(num); |
| 2119 | else |
| 2120 | dump_one_paca(xmon_owner); |
| 2121 | } |
| 2122 | #endif |
| 2123 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2124 | #define isxdigit(c) (('0' <= (c) && (c) <= '9') \ |
| 2125 | || ('a' <= (c) && (c) <= 'f') \ |
| 2126 | || ('A' <= (c) && (c) <= 'F')) |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2127 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2128 | dump(void) |
| 2129 | { |
| 2130 | int c; |
| 2131 | |
| 2132 | c = inchar(); |
Michael Ellerman | ddadb6b | 2012-09-13 23:01:31 +0000 | [diff] [blame] | 2133 | |
| 2134 | #ifdef CONFIG_PPC64 |
| 2135 | if (c == 'p') { |
| 2136 | dump_pacas(); |
| 2137 | return; |
| 2138 | } |
| 2139 | #endif |
| 2140 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2141 | if ((isxdigit(c) && c != 'f' && c != 'd') || c == '\n') |
| 2142 | termch = c; |
| 2143 | scanhex((void *)&adrs); |
| 2144 | if (termch != '\n') |
| 2145 | termch = 0; |
| 2146 | if (c == 'i') { |
| 2147 | scanhex(&nidump); |
| 2148 | if (nidump == 0) |
| 2149 | nidump = 16; |
| 2150 | else if (nidump > MAX_DUMP) |
| 2151 | nidump = MAX_DUMP; |
| 2152 | adrs += ppc_inst_dump(adrs, nidump, 1); |
| 2153 | last_cmd = "di\n"; |
Vinay Sridhar | f312deb | 2009-05-14 23:13:07 +0000 | [diff] [blame] | 2154 | } else if (c == 'l') { |
| 2155 | dump_log_buf(); |
Olaf Hering | 7e5b593 | 2006-03-08 20:40:28 +0100 | [diff] [blame] | 2156 | } else if (c == 'r') { |
| 2157 | scanhex(&ndump); |
| 2158 | if (ndump == 0) |
| 2159 | ndump = 64; |
| 2160 | xmon_rawdump(adrs, ndump); |
| 2161 | adrs += ndump; |
| 2162 | last_cmd = "dr\n"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2163 | } else { |
| 2164 | scanhex(&ndump); |
| 2165 | if (ndump == 0) |
| 2166 | ndump = 64; |
| 2167 | else if (ndump > MAX_DUMP) |
| 2168 | ndump = MAX_DUMP; |
| 2169 | prdump(adrs, ndump); |
| 2170 | adrs += ndump; |
| 2171 | last_cmd = "d\n"; |
| 2172 | } |
| 2173 | } |
| 2174 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2175 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2176 | prdump(unsigned long adrs, long ndump) |
| 2177 | { |
| 2178 | long n, m, c, r, nr; |
| 2179 | unsigned char temp[16]; |
| 2180 | |
| 2181 | for (n = ndump; n > 0;) { |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 2182 | printf(REG, adrs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2183 | putchar(' '); |
| 2184 | r = n < 16? n: 16; |
| 2185 | nr = mread(adrs, temp, r); |
| 2186 | adrs += nr; |
| 2187 | for (m = 0; m < r; ++m) { |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 2188 | if ((m & (sizeof(long) - 1)) == 0 && m > 0) |
Paul Mackerras | e1449ed | 2005-11-10 14:30:20 +1100 | [diff] [blame] | 2189 | putchar(' '); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2190 | if (m < nr) |
| 2191 | printf("%.2x", temp[m]); |
| 2192 | else |
| 2193 | printf("%s", fault_chars[fault_type]); |
| 2194 | } |
Paul Mackerras | e1449ed | 2005-11-10 14:30:20 +1100 | [diff] [blame] | 2195 | for (; m < 16; ++m) { |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 2196 | if ((m & (sizeof(long) - 1)) == 0) |
Paul Mackerras | e1449ed | 2005-11-10 14:30:20 +1100 | [diff] [blame] | 2197 | putchar(' '); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2198 | printf(" "); |
Paul Mackerras | e1449ed | 2005-11-10 14:30:20 +1100 | [diff] [blame] | 2199 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2200 | printf(" |"); |
| 2201 | for (m = 0; m < r; ++m) { |
| 2202 | if (m < nr) { |
| 2203 | c = temp[m]; |
| 2204 | putchar(' ' <= c && c <= '~'? c: '.'); |
| 2205 | } else |
| 2206 | putchar(' '); |
| 2207 | } |
| 2208 | n -= r; |
| 2209 | for (; m < 16; ++m) |
| 2210 | putchar(' '); |
| 2211 | printf("|\n"); |
| 2212 | if (nr < r) |
| 2213 | break; |
| 2214 | } |
| 2215 | } |
| 2216 | |
Michael Ellerman | 4c4c872 | 2006-11-23 00:46:42 +0100 | [diff] [blame] | 2217 | typedef int (*instruction_dump_func)(unsigned long inst, unsigned long addr); |
| 2218 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2219 | static int |
Michael Ellerman | 4c4c872 | 2006-11-23 00:46:42 +0100 | [diff] [blame] | 2220 | generic_inst_dump(unsigned long adr, long count, int praddr, |
| 2221 | instruction_dump_func dump_func) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2222 | { |
| 2223 | int nr, dotted; |
| 2224 | unsigned long first_adr; |
| 2225 | unsigned long inst, last_inst = 0; |
| 2226 | unsigned char val[4]; |
| 2227 | |
| 2228 | dotted = 0; |
| 2229 | for (first_adr = adr; count > 0; --count, adr += 4) { |
| 2230 | nr = mread(adr, val, 4); |
| 2231 | if (nr == 0) { |
| 2232 | if (praddr) { |
| 2233 | const char *x = fault_chars[fault_type]; |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 2234 | printf(REG" %s%s%s%s\n", adr, x, x, x, x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2235 | } |
| 2236 | break; |
| 2237 | } |
| 2238 | inst = GETWORD(val); |
| 2239 | if (adr > first_adr && inst == last_inst) { |
| 2240 | if (!dotted) { |
| 2241 | printf(" ...\n"); |
| 2242 | dotted = 1; |
| 2243 | } |
| 2244 | continue; |
| 2245 | } |
| 2246 | dotted = 0; |
| 2247 | last_inst = inst; |
| 2248 | if (praddr) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 2249 | printf(REG" %.8x", adr, inst); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2250 | printf("\t"); |
Michael Ellerman | 4c4c872 | 2006-11-23 00:46:42 +0100 | [diff] [blame] | 2251 | dump_func(inst, adr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2252 | printf("\n"); |
| 2253 | } |
| 2254 | return adr - first_adr; |
| 2255 | } |
| 2256 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2257 | static int |
Michael Ellerman | 4c4c872 | 2006-11-23 00:46:42 +0100 | [diff] [blame] | 2258 | ppc_inst_dump(unsigned long adr, long count, int praddr) |
| 2259 | { |
| 2260 | return generic_inst_dump(adr, count, praddr, print_insn_powerpc); |
| 2261 | } |
| 2262 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2263 | void |
| 2264 | print_address(unsigned long addr) |
| 2265 | { |
| 2266 | xmon_print_symbol(addr, "\t# ", ""); |
| 2267 | } |
| 2268 | |
Vinay Sridhar | f312deb | 2009-05-14 23:13:07 +0000 | [diff] [blame] | 2269 | void |
| 2270 | dump_log_buf(void) |
| 2271 | { |
Michael Ellerman | ca5dd39 | 2012-08-23 22:09:12 +0000 | [diff] [blame] | 2272 | struct kmsg_dumper dumper = { .active = 1 }; |
| 2273 | unsigned char buf[128]; |
| 2274 | size_t len; |
Vinay Sridhar | f312deb | 2009-05-14 23:13:07 +0000 | [diff] [blame] | 2275 | |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 2276 | if (setjmp(bus_error_jmp) != 0) { |
Michael Ellerman | ca5dd39 | 2012-08-23 22:09:12 +0000 | [diff] [blame] | 2277 | printf("Error dumping printk buffer!\n"); |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 2278 | return; |
| 2279 | } |
Vinay Sridhar | f312deb | 2009-05-14 23:13:07 +0000 | [diff] [blame] | 2280 | |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 2281 | catch_memory_errors = 1; |
| 2282 | sync(); |
Vinay Sridhar | f312deb | 2009-05-14 23:13:07 +0000 | [diff] [blame] | 2283 | |
Michael Ellerman | ca5dd39 | 2012-08-23 22:09:12 +0000 | [diff] [blame] | 2284 | kmsg_dump_rewind_nolock(&dumper); |
| 2285 | while (kmsg_dump_get_line_nolock(&dumper, false, buf, sizeof(buf), &len)) { |
| 2286 | buf[len] = '\0'; |
| 2287 | printf("%s", buf); |
| 2288 | } |
Vinay Sridhar | f312deb | 2009-05-14 23:13:07 +0000 | [diff] [blame] | 2289 | |
Michael Ellerman | e3bc804 | 2012-08-23 22:09:13 +0000 | [diff] [blame] | 2290 | sync(); |
| 2291 | /* wait a little while to see if we get a machine check */ |
| 2292 | __delay(200); |
| 2293 | catch_memory_errors = 0; |
Vinay Sridhar | f312deb | 2009-05-14 23:13:07 +0000 | [diff] [blame] | 2294 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2295 | |
| 2296 | /* |
| 2297 | * Memory operations - move, set, print differences |
| 2298 | */ |
| 2299 | static unsigned long mdest; /* destination address */ |
| 2300 | static unsigned long msrc; /* source address */ |
| 2301 | static unsigned long mval; /* byte value to set memory to */ |
| 2302 | static unsigned long mcount; /* # bytes to affect */ |
| 2303 | static unsigned long mdiffs; /* max # differences to print */ |
| 2304 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2305 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2306 | memops(int cmd) |
| 2307 | { |
| 2308 | scanhex((void *)&mdest); |
| 2309 | if( termch != '\n' ) |
| 2310 | termch = 0; |
| 2311 | scanhex((void *)(cmd == 's'? &mval: &msrc)); |
| 2312 | if( termch != '\n' ) |
| 2313 | termch = 0; |
| 2314 | scanhex((void *)&mcount); |
| 2315 | switch( cmd ){ |
| 2316 | case 'm': |
| 2317 | memmove((void *)mdest, (void *)msrc, mcount); |
| 2318 | break; |
| 2319 | case 's': |
| 2320 | memset((void *)mdest, mval, mcount); |
| 2321 | break; |
| 2322 | case 'd': |
| 2323 | if( termch != '\n' ) |
| 2324 | termch = 0; |
| 2325 | scanhex((void *)&mdiffs); |
| 2326 | memdiffs((unsigned char *)mdest, (unsigned char *)msrc, mcount, mdiffs); |
| 2327 | break; |
| 2328 | } |
| 2329 | } |
| 2330 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2331 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2332 | memdiffs(unsigned char *p1, unsigned char *p2, unsigned nb, unsigned maxpr) |
| 2333 | { |
| 2334 | unsigned n, prt; |
| 2335 | |
| 2336 | prt = 0; |
| 2337 | for( n = nb; n > 0; --n ) |
| 2338 | if( *p1++ != *p2++ ) |
| 2339 | if( ++prt <= maxpr ) |
| 2340 | printf("%.16x %.2x # %.16x %.2x\n", p1 - 1, |
| 2341 | p1[-1], p2 - 1, p2[-1]); |
| 2342 | if( prt > maxpr ) |
| 2343 | printf("Total of %d differences\n", prt); |
| 2344 | } |
| 2345 | |
| 2346 | static unsigned mend; |
| 2347 | static unsigned mask; |
| 2348 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2349 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2350 | memlocate(void) |
| 2351 | { |
| 2352 | unsigned a, n; |
| 2353 | unsigned char val[4]; |
| 2354 | |
| 2355 | last_cmd = "ml"; |
| 2356 | scanhex((void *)&mdest); |
| 2357 | if (termch != '\n') { |
| 2358 | termch = 0; |
| 2359 | scanhex((void *)&mend); |
| 2360 | if (termch != '\n') { |
| 2361 | termch = 0; |
| 2362 | scanhex((void *)&mval); |
| 2363 | mask = ~0; |
| 2364 | if (termch != '\n') termch = 0; |
| 2365 | scanhex((void *)&mask); |
| 2366 | } |
| 2367 | } |
| 2368 | n = 0; |
| 2369 | for (a = mdest; a < mend; a += 4) { |
| 2370 | if (mread(a, val, 4) == 4 |
| 2371 | && ((GETWORD(val) ^ mval) & mask) == 0) { |
| 2372 | printf("%.16x: %.16x\n", a, GETWORD(val)); |
| 2373 | if (++n >= 10) |
| 2374 | break; |
| 2375 | } |
| 2376 | } |
| 2377 | } |
| 2378 | |
| 2379 | static unsigned long mskip = 0x1000; |
| 2380 | static unsigned long mlim = 0xffffffff; |
| 2381 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2382 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2383 | memzcan(void) |
| 2384 | { |
| 2385 | unsigned char v; |
| 2386 | unsigned a; |
| 2387 | int ok, ook; |
| 2388 | |
| 2389 | scanhex(&mdest); |
| 2390 | if (termch != '\n') termch = 0; |
| 2391 | scanhex(&mskip); |
| 2392 | if (termch != '\n') termch = 0; |
| 2393 | scanhex(&mlim); |
| 2394 | ook = 0; |
| 2395 | for (a = mdest; a < mlim; a += mskip) { |
| 2396 | ok = mread(a, &v, 1); |
| 2397 | if (ok && !ook) { |
| 2398 | printf("%.8x .. ", a); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2399 | } else if (!ok && ook) |
| 2400 | printf("%.8x\n", a - mskip); |
| 2401 | ook = ok; |
| 2402 | if (a + mskip < a) |
| 2403 | break; |
| 2404 | } |
| 2405 | if (ook) |
| 2406 | printf("%.8x\n", a - mskip); |
| 2407 | } |
| 2408 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2409 | static void proccall(void) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 2410 | { |
| 2411 | unsigned long args[8]; |
| 2412 | unsigned long ret; |
| 2413 | int i; |
| 2414 | typedef unsigned long (*callfunc_t)(unsigned long, unsigned long, |
| 2415 | unsigned long, unsigned long, unsigned long, |
| 2416 | unsigned long, unsigned long, unsigned long); |
| 2417 | callfunc_t func; |
| 2418 | |
| 2419 | if (!scanhex(&adrs)) |
| 2420 | return; |
| 2421 | if (termch != '\n') |
| 2422 | termch = 0; |
| 2423 | for (i = 0; i < 8; ++i) |
| 2424 | args[i] = 0; |
| 2425 | for (i = 0; i < 8; ++i) { |
| 2426 | if (!scanhex(&args[i]) || termch == '\n') |
| 2427 | break; |
| 2428 | termch = 0; |
| 2429 | } |
| 2430 | func = (callfunc_t) adrs; |
| 2431 | ret = 0; |
| 2432 | if (setjmp(bus_error_jmp) == 0) { |
| 2433 | catch_memory_errors = 1; |
| 2434 | sync(); |
| 2435 | ret = func(args[0], args[1], args[2], args[3], |
| 2436 | args[4], args[5], args[6], args[7]); |
| 2437 | sync(); |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 2438 | printf("return value is 0x%lx\n", ret); |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 2439 | } else { |
| 2440 | printf("*** %x exception occurred\n", fault_except); |
| 2441 | } |
| 2442 | catch_memory_errors = 0; |
| 2443 | } |
| 2444 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2445 | /* Input scanning routines */ |
| 2446 | int |
| 2447 | skipbl(void) |
| 2448 | { |
| 2449 | int c; |
| 2450 | |
| 2451 | if( termch != 0 ){ |
| 2452 | c = termch; |
| 2453 | termch = 0; |
| 2454 | } else |
| 2455 | c = inchar(); |
| 2456 | while( c == ' ' || c == '\t' ) |
| 2457 | c = inchar(); |
| 2458 | return c; |
| 2459 | } |
| 2460 | |
| 2461 | #define N_PTREGS 44 |
| 2462 | static char *regnames[N_PTREGS] = { |
| 2463 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 2464 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 2465 | "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", |
| 2466 | "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 2467 | "pc", "msr", "or3", "ctr", "lr", "xer", "ccr", |
| 2468 | #ifdef CONFIG_PPC64 |
| 2469 | "softe", |
| 2470 | #else |
| 2471 | "mq", |
| 2472 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2473 | "trap", "dar", "dsisr", "res" |
| 2474 | }; |
| 2475 | |
| 2476 | int |
| 2477 | scanhex(unsigned long *vp) |
| 2478 | { |
| 2479 | int c, d; |
| 2480 | unsigned long v; |
| 2481 | |
| 2482 | c = skipbl(); |
| 2483 | if (c == '%') { |
| 2484 | /* parse register name */ |
| 2485 | char regname[8]; |
| 2486 | int i; |
| 2487 | |
| 2488 | for (i = 0; i < sizeof(regname) - 1; ++i) { |
| 2489 | c = inchar(); |
| 2490 | if (!isalnum(c)) { |
| 2491 | termch = c; |
| 2492 | break; |
| 2493 | } |
| 2494 | regname[i] = c; |
| 2495 | } |
| 2496 | regname[i] = 0; |
| 2497 | for (i = 0; i < N_PTREGS; ++i) { |
| 2498 | if (strcmp(regnames[i], regname) == 0) { |
| 2499 | if (xmon_regs == NULL) { |
| 2500 | printf("regs not available\n"); |
| 2501 | return 0; |
| 2502 | } |
| 2503 | *vp = ((unsigned long *)xmon_regs)[i]; |
| 2504 | return 1; |
| 2505 | } |
| 2506 | } |
| 2507 | printf("invalid register name '%%%s'\n", regname); |
| 2508 | return 0; |
| 2509 | } |
| 2510 | |
| 2511 | /* skip leading "0x" if any */ |
| 2512 | |
| 2513 | if (c == '0') { |
| 2514 | c = inchar(); |
| 2515 | if (c == 'x') { |
| 2516 | c = inchar(); |
| 2517 | } else { |
| 2518 | d = hexdigit(c); |
| 2519 | if (d == EOF) { |
| 2520 | termch = c; |
| 2521 | *vp = 0; |
| 2522 | return 1; |
| 2523 | } |
| 2524 | } |
| 2525 | } else if (c == '$') { |
| 2526 | int i; |
| 2527 | for (i=0; i<63; i++) { |
| 2528 | c = inchar(); |
| 2529 | if (isspace(c)) { |
| 2530 | termch = c; |
| 2531 | break; |
| 2532 | } |
| 2533 | tmpstr[i] = c; |
| 2534 | } |
| 2535 | tmpstr[i++] = 0; |
Benjamin Herrenschmidt | 6879dc1 | 2005-06-21 17:15:30 -0700 | [diff] [blame] | 2536 | *vp = 0; |
| 2537 | if (setjmp(bus_error_jmp) == 0) { |
| 2538 | catch_memory_errors = 1; |
| 2539 | sync(); |
| 2540 | *vp = kallsyms_lookup_name(tmpstr); |
| 2541 | sync(); |
| 2542 | } |
| 2543 | catch_memory_errors = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2544 | if (!(*vp)) { |
| 2545 | printf("unknown symbol '%s'\n", tmpstr); |
| 2546 | return 0; |
| 2547 | } |
| 2548 | return 1; |
| 2549 | } |
| 2550 | |
| 2551 | d = hexdigit(c); |
| 2552 | if (d == EOF) { |
| 2553 | termch = c; |
| 2554 | return 0; |
| 2555 | } |
| 2556 | v = 0; |
| 2557 | do { |
| 2558 | v = (v << 4) + d; |
| 2559 | c = inchar(); |
| 2560 | d = hexdigit(c); |
| 2561 | } while (d != EOF); |
| 2562 | termch = c; |
| 2563 | *vp = v; |
| 2564 | return 1; |
| 2565 | } |
| 2566 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2567 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2568 | scannl(void) |
| 2569 | { |
| 2570 | int c; |
| 2571 | |
| 2572 | c = termch; |
| 2573 | termch = 0; |
| 2574 | while( c != '\n' ) |
| 2575 | c = inchar(); |
| 2576 | } |
| 2577 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2578 | static int hexdigit(int c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2579 | { |
| 2580 | if( '0' <= c && c <= '9' ) |
| 2581 | return c - '0'; |
| 2582 | if( 'A' <= c && c <= 'F' ) |
| 2583 | return c - ('A' - 10); |
| 2584 | if( 'a' <= c && c <= 'f' ) |
| 2585 | return c - ('a' - 10); |
| 2586 | return EOF; |
| 2587 | } |
| 2588 | |
| 2589 | void |
| 2590 | getstring(char *s, int size) |
| 2591 | { |
| 2592 | int c; |
| 2593 | |
| 2594 | c = skipbl(); |
| 2595 | do { |
| 2596 | if( size > 1 ){ |
| 2597 | *s++ = c; |
| 2598 | --size; |
| 2599 | } |
| 2600 | c = inchar(); |
| 2601 | } while( c != ' ' && c != '\t' && c != '\n' ); |
| 2602 | termch = c; |
| 2603 | *s = 0; |
| 2604 | } |
| 2605 | |
| 2606 | static char line[256]; |
| 2607 | static char *lineptr; |
| 2608 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2609 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2610 | flush_input(void) |
| 2611 | { |
| 2612 | lineptr = NULL; |
| 2613 | } |
| 2614 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2615 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2616 | inchar(void) |
| 2617 | { |
| 2618 | if (lineptr == NULL || *lineptr == 0) { |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 2619 | if (xmon_gets(line, sizeof(line)) == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2620 | lineptr = NULL; |
| 2621 | return EOF; |
| 2622 | } |
| 2623 | lineptr = line; |
| 2624 | } |
| 2625 | return *lineptr++; |
| 2626 | } |
| 2627 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2628 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2629 | take_input(char *str) |
| 2630 | { |
| 2631 | lineptr = str; |
| 2632 | } |
| 2633 | |
| 2634 | |
| 2635 | static void |
| 2636 | symbol_lookup(void) |
| 2637 | { |
| 2638 | int type = inchar(); |
| 2639 | unsigned long addr; |
| 2640 | static char tmp[64]; |
| 2641 | |
| 2642 | switch (type) { |
| 2643 | case 'a': |
| 2644 | if (scanhex(&addr)) |
| 2645 | xmon_print_symbol(addr, ": ", "\n"); |
| 2646 | termch = 0; |
| 2647 | break; |
| 2648 | case 's': |
| 2649 | getstring(tmp, 64); |
| 2650 | if (setjmp(bus_error_jmp) == 0) { |
| 2651 | catch_memory_errors = 1; |
| 2652 | sync(); |
| 2653 | addr = kallsyms_lookup_name(tmp); |
| 2654 | if (addr) |
| 2655 | printf("%s: %lx\n", tmp, addr); |
| 2656 | else |
| 2657 | printf("Symbol '%s' not found.\n", tmp); |
| 2658 | sync(); |
| 2659 | } |
| 2660 | catch_memory_errors = 0; |
| 2661 | termch = 0; |
| 2662 | break; |
| 2663 | } |
| 2664 | } |
| 2665 | |
| 2666 | |
| 2667 | /* Print an address in numeric and symbolic form (if possible) */ |
| 2668 | static void xmon_print_symbol(unsigned long address, const char *mid, |
| 2669 | const char *after) |
| 2670 | { |
| 2671 | char *modname; |
| 2672 | const char *name = NULL; |
| 2673 | unsigned long offset, size; |
| 2674 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 2675 | printf(REG, address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2676 | if (setjmp(bus_error_jmp) == 0) { |
| 2677 | catch_memory_errors = 1; |
| 2678 | sync(); |
| 2679 | name = kallsyms_lookup(address, &size, &offset, &modname, |
| 2680 | tmpstr); |
| 2681 | sync(); |
| 2682 | /* wait a little while to see if we get a machine check */ |
| 2683 | __delay(200); |
| 2684 | } |
| 2685 | |
| 2686 | catch_memory_errors = 0; |
| 2687 | |
| 2688 | if (name) { |
| 2689 | printf("%s%s+%#lx/%#lx", mid, name, offset, size); |
| 2690 | if (modname) |
| 2691 | printf(" [%s]", modname); |
| 2692 | } |
| 2693 | printf("%s", after); |
| 2694 | } |
| 2695 | |
Benjamin Herrenschmidt | 2d27cfd | 2009-07-23 23:15:59 +0000 | [diff] [blame] | 2696 | #ifdef CONFIG_PPC_BOOK3S_64 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2697 | static void dump_slb(void) |
| 2698 | { |
| 2699 | int i; |
will schmidt | b3b9595 | 2007-12-07 08:22:23 +1100 | [diff] [blame] | 2700 | unsigned long esid,vsid,valid; |
| 2701 | unsigned long llp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2702 | |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 2703 | printf("SLB contents of cpu 0x%x\n", smp_processor_id()); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2704 | |
Michael Neuling | 584f8b7 | 2007-12-06 17:24:48 +1100 | [diff] [blame] | 2705 | for (i = 0; i < mmu_slb_size; i++) { |
will schmidt | b3b9595 | 2007-12-07 08:22:23 +1100 | [diff] [blame] | 2706 | asm volatile("slbmfee %0,%1" : "=r" (esid) : "r" (i)); |
| 2707 | asm volatile("slbmfev %0,%1" : "=r" (vsid) : "r" (i)); |
| 2708 | valid = (esid & SLB_ESID_V); |
| 2709 | if (valid | esid | vsid) { |
| 2710 | printf("%02d %016lx %016lx", i, esid, vsid); |
| 2711 | if (valid) { |
| 2712 | llp = vsid & SLB_VSID_LLP; |
| 2713 | if (vsid & SLB_VSID_B_1T) { |
| 2714 | printf(" 1T ESID=%9lx VSID=%13lx LLP:%3lx \n", |
| 2715 | GET_ESID_1T(esid), |
| 2716 | (vsid & ~SLB_VSID_B) >> SLB_VSID_SHIFT_1T, |
| 2717 | llp); |
| 2718 | } else { |
| 2719 | printf(" 256M ESID=%9lx VSID=%13lx LLP:%3lx \n", |
| 2720 | GET_ESID(esid), |
| 2721 | (vsid & ~SLB_VSID_B) >> SLB_VSID_SHIFT, |
| 2722 | llp); |
| 2723 | } |
| 2724 | } else |
| 2725 | printf("\n"); |
| 2726 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2727 | } |
| 2728 | } |
| 2729 | |
| 2730 | static void dump_stab(void) |
| 2731 | { |
| 2732 | int i; |
Benjamin Herrenschmidt | 7ac21cd | 2012-03-02 10:10:09 +1100 | [diff] [blame] | 2733 | unsigned long *tmp = (unsigned long *)local_paca->stab_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2734 | |
Michael Ellerman | 736256e | 2014-05-26 21:02:14 +1000 | [diff] [blame] | 2735 | printf("Segment table contents of cpu 0x%x\n", smp_processor_id()); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2736 | |
| 2737 | for (i = 0; i < PAGE_SIZE/16; i++) { |
| 2738 | unsigned long a, b; |
| 2739 | |
| 2740 | a = *tmp++; |
| 2741 | b = *tmp++; |
| 2742 | |
| 2743 | if (a || b) { |
| 2744 | printf("%03d %016lx ", i, a); |
| 2745 | printf("%016lx\n", b); |
| 2746 | } |
| 2747 | } |
| 2748 | } |
| 2749 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 2750 | void dump_segments(void) |
| 2751 | { |
Matt Evans | 44ae3ab | 2011-04-06 19:48:50 +0000 | [diff] [blame] | 2752 | if (mmu_has_feature(MMU_FTR_SLB)) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 2753 | dump_slb(); |
| 2754 | else |
| 2755 | dump_stab(); |
| 2756 | } |
| 2757 | #endif |
| 2758 | |
| 2759 | #ifdef CONFIG_PPC_STD_MMU_32 |
| 2760 | void dump_segments(void) |
| 2761 | { |
| 2762 | int i; |
| 2763 | |
| 2764 | printf("sr0-15 ="); |
| 2765 | for (i = 0; i < 16; ++i) |
| 2766 | printf(" %x", mfsrin(i)); |
| 2767 | printf("\n"); |
| 2768 | } |
| 2769 | #endif |
| 2770 | |
Benjamin Herrenschmidt | 5a8a1a2 | 2007-11-16 18:23:33 +1100 | [diff] [blame] | 2771 | #ifdef CONFIG_44x |
| 2772 | static void dump_tlb_44x(void) |
| 2773 | { |
| 2774 | int i; |
| 2775 | |
| 2776 | for (i = 0; i < PPC44x_TLB_SIZE; i++) { |
| 2777 | unsigned long w0,w1,w2; |
| 2778 | asm volatile("tlbre %0,%1,0" : "=r" (w0) : "r" (i)); |
| 2779 | asm volatile("tlbre %0,%1,1" : "=r" (w1) : "r" (i)); |
| 2780 | asm volatile("tlbre %0,%1,2" : "=r" (w2) : "r" (i)); |
| 2781 | printf("[%02x] %08x %08x %08x ", i, w0, w1, w2); |
| 2782 | if (w0 & PPC44x_TLB_VALID) { |
| 2783 | printf("V %08x -> %01x%08x %c%c%c%c%c", |
| 2784 | w0 & PPC44x_TLB_EPN_MASK, |
| 2785 | w1 & PPC44x_TLB_ERPN_MASK, |
| 2786 | w1 & PPC44x_TLB_RPN_MASK, |
| 2787 | (w2 & PPC44x_TLB_W) ? 'W' : 'w', |
| 2788 | (w2 & PPC44x_TLB_I) ? 'I' : 'i', |
| 2789 | (w2 & PPC44x_TLB_M) ? 'M' : 'm', |
| 2790 | (w2 & PPC44x_TLB_G) ? 'G' : 'g', |
| 2791 | (w2 & PPC44x_TLB_E) ? 'E' : 'e'); |
| 2792 | } |
| 2793 | printf("\n"); |
| 2794 | } |
| 2795 | } |
| 2796 | #endif /* CONFIG_44x */ |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2797 | |
Benjamin Herrenschmidt | 0324715 | 2010-07-09 15:34:50 +1000 | [diff] [blame] | 2798 | #ifdef CONFIG_PPC_BOOK3E |
| 2799 | static void dump_tlb_book3e(void) |
| 2800 | { |
| 2801 | u32 mmucfg, pidmask, lpidmask; |
| 2802 | u64 ramask; |
| 2803 | int i, tlb, ntlbs, pidsz, lpidsz, rasz, lrat = 0; |
| 2804 | int mmu_version; |
| 2805 | static const char *pgsz_names[] = { |
| 2806 | " 1K", |
| 2807 | " 2K", |
| 2808 | " 4K", |
| 2809 | " 8K", |
| 2810 | " 16K", |
| 2811 | " 32K", |
| 2812 | " 64K", |
| 2813 | "128K", |
| 2814 | "256K", |
| 2815 | "512K", |
| 2816 | " 1M", |
| 2817 | " 2M", |
| 2818 | " 4M", |
| 2819 | " 8M", |
| 2820 | " 16M", |
| 2821 | " 32M", |
| 2822 | " 64M", |
| 2823 | "128M", |
| 2824 | "256M", |
| 2825 | "512M", |
| 2826 | " 1G", |
| 2827 | " 2G", |
| 2828 | " 4G", |
| 2829 | " 8G", |
| 2830 | " 16G", |
| 2831 | " 32G", |
| 2832 | " 64G", |
| 2833 | "128G", |
| 2834 | "256G", |
| 2835 | "512G", |
| 2836 | " 1T", |
| 2837 | " 2T", |
| 2838 | }; |
| 2839 | |
| 2840 | /* Gather some infos about the MMU */ |
| 2841 | mmucfg = mfspr(SPRN_MMUCFG); |
| 2842 | mmu_version = (mmucfg & 3) + 1; |
| 2843 | ntlbs = ((mmucfg >> 2) & 3) + 1; |
| 2844 | pidsz = ((mmucfg >> 6) & 0x1f) + 1; |
| 2845 | lpidsz = (mmucfg >> 24) & 0xf; |
| 2846 | rasz = (mmucfg >> 16) & 0x7f; |
| 2847 | if ((mmu_version > 1) && (mmucfg & 0x10000)) |
| 2848 | lrat = 1; |
| 2849 | printf("Book3E MMU MAV=%d.0,%d TLBs,%d-bit PID,%d-bit LPID,%d-bit RA\n", |
| 2850 | mmu_version, ntlbs, pidsz, lpidsz, rasz); |
| 2851 | pidmask = (1ul << pidsz) - 1; |
| 2852 | lpidmask = (1ul << lpidsz) - 1; |
| 2853 | ramask = (1ull << rasz) - 1; |
| 2854 | |
| 2855 | for (tlb = 0; tlb < ntlbs; tlb++) { |
| 2856 | u32 tlbcfg; |
| 2857 | int nent, assoc, new_cc = 1; |
| 2858 | printf("TLB %d:\n------\n", tlb); |
| 2859 | switch(tlb) { |
| 2860 | case 0: |
| 2861 | tlbcfg = mfspr(SPRN_TLB0CFG); |
| 2862 | break; |
| 2863 | case 1: |
| 2864 | tlbcfg = mfspr(SPRN_TLB1CFG); |
| 2865 | break; |
| 2866 | case 2: |
| 2867 | tlbcfg = mfspr(SPRN_TLB2CFG); |
| 2868 | break; |
| 2869 | case 3: |
| 2870 | tlbcfg = mfspr(SPRN_TLB3CFG); |
| 2871 | break; |
| 2872 | default: |
| 2873 | printf("Unsupported TLB number !\n"); |
| 2874 | continue; |
| 2875 | } |
| 2876 | nent = tlbcfg & 0xfff; |
| 2877 | assoc = (tlbcfg >> 24) & 0xff; |
| 2878 | for (i = 0; i < nent; i++) { |
| 2879 | u32 mas0 = MAS0_TLBSEL(tlb); |
| 2880 | u32 mas1 = MAS1_TSIZE(BOOK3E_PAGESZ_4K); |
| 2881 | u64 mas2 = 0; |
| 2882 | u64 mas7_mas3; |
| 2883 | int esel = i, cc = i; |
| 2884 | |
| 2885 | if (assoc != 0) { |
| 2886 | cc = i / assoc; |
| 2887 | esel = i % assoc; |
| 2888 | mas2 = cc * 0x1000; |
| 2889 | } |
| 2890 | |
| 2891 | mas0 |= MAS0_ESEL(esel); |
| 2892 | mtspr(SPRN_MAS0, mas0); |
| 2893 | mtspr(SPRN_MAS1, mas1); |
| 2894 | mtspr(SPRN_MAS2, mas2); |
| 2895 | asm volatile("tlbre 0,0,0" : : : "memory"); |
| 2896 | mas1 = mfspr(SPRN_MAS1); |
| 2897 | mas2 = mfspr(SPRN_MAS2); |
| 2898 | mas7_mas3 = mfspr(SPRN_MAS7_MAS3); |
| 2899 | if (assoc && (i % assoc) == 0) |
| 2900 | new_cc = 1; |
| 2901 | if (!(mas1 & MAS1_VALID)) |
| 2902 | continue; |
| 2903 | if (assoc == 0) |
| 2904 | printf("%04x- ", i); |
| 2905 | else if (new_cc) |
| 2906 | printf("%04x-%c", cc, 'A' + esel); |
| 2907 | else |
| 2908 | printf(" |%c", 'A' + esel); |
| 2909 | new_cc = 0; |
| 2910 | printf(" %016llx %04x %s %c%c AS%c", |
| 2911 | mas2 & ~0x3ffull, |
| 2912 | (mas1 >> 16) & 0x3fff, |
| 2913 | pgsz_names[(mas1 >> 7) & 0x1f], |
| 2914 | mas1 & MAS1_IND ? 'I' : ' ', |
| 2915 | mas1 & MAS1_IPROT ? 'P' : ' ', |
| 2916 | mas1 & MAS1_TS ? '1' : '0'); |
| 2917 | printf(" %c%c%c%c%c%c%c", |
| 2918 | mas2 & MAS2_X0 ? 'a' : ' ', |
| 2919 | mas2 & MAS2_X1 ? 'v' : ' ', |
| 2920 | mas2 & MAS2_W ? 'w' : ' ', |
| 2921 | mas2 & MAS2_I ? 'i' : ' ', |
| 2922 | mas2 & MAS2_M ? 'm' : ' ', |
| 2923 | mas2 & MAS2_G ? 'g' : ' ', |
| 2924 | mas2 & MAS2_E ? 'e' : ' '); |
| 2925 | printf(" %016llx", mas7_mas3 & ramask & ~0x7ffull); |
| 2926 | if (mas1 & MAS1_IND) |
| 2927 | printf(" %s\n", |
| 2928 | pgsz_names[(mas7_mas3 >> 1) & 0x1f]); |
| 2929 | else |
| 2930 | printf(" U%c%c%c S%c%c%c\n", |
| 2931 | mas7_mas3 & MAS3_UX ? 'x' : ' ', |
| 2932 | mas7_mas3 & MAS3_UW ? 'w' : ' ', |
| 2933 | mas7_mas3 & MAS3_UR ? 'r' : ' ', |
| 2934 | mas7_mas3 & MAS3_SX ? 'x' : ' ', |
| 2935 | mas7_mas3 & MAS3_SW ? 'w' : ' ', |
| 2936 | mas7_mas3 & MAS3_SR ? 'r' : ' '); |
| 2937 | } |
| 2938 | } |
| 2939 | } |
| 2940 | #endif /* CONFIG_PPC_BOOK3E */ |
| 2941 | |
Michael Ellerman | 9f1067c2 | 2008-05-08 14:27:16 +1000 | [diff] [blame] | 2942 | static void xmon_init(int enable) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2943 | { |
Olaf Hering | b13cfd17 | 2005-08-04 19:26:42 +0200 | [diff] [blame] | 2944 | if (enable) { |
| 2945 | __debugger = xmon; |
| 2946 | __debugger_ipi = xmon_ipi; |
| 2947 | __debugger_bpt = xmon_bpt; |
| 2948 | __debugger_sstep = xmon_sstep; |
| 2949 | __debugger_iabr_match = xmon_iabr_match; |
Michael Neuling | 9422de3 | 2012-12-20 14:06:44 +0000 | [diff] [blame] | 2950 | __debugger_break_match = xmon_break_match; |
Olaf Hering | b13cfd17 | 2005-08-04 19:26:42 +0200 | [diff] [blame] | 2951 | __debugger_fault_handler = xmon_fault_handler; |
| 2952 | } else { |
| 2953 | __debugger = NULL; |
| 2954 | __debugger_ipi = NULL; |
| 2955 | __debugger_bpt = NULL; |
| 2956 | __debugger_sstep = NULL; |
| 2957 | __debugger_iabr_match = NULL; |
Michael Neuling | 9422de3 | 2012-12-20 14:06:44 +0000 | [diff] [blame] | 2958 | __debugger_break_match = NULL; |
Olaf Hering | b13cfd17 | 2005-08-04 19:26:42 +0200 | [diff] [blame] | 2959 | __debugger_fault_handler = NULL; |
| 2960 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2961 | } |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 2962 | |
| 2963 | #ifdef CONFIG_MAGIC_SYSRQ |
Dmitry Torokhov | 1495cc9 | 2010-08-17 21:15:46 -0700 | [diff] [blame] | 2964 | static void sysrq_handle_xmon(int key) |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 2965 | { |
| 2966 | /* ensure xmon is enabled */ |
| 2967 | xmon_init(1); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 2968 | debugger(get_irq_regs()); |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 2969 | } |
| 2970 | |
Dmitry Torokhov | 1495cc9 | 2010-08-17 21:15:46 -0700 | [diff] [blame] | 2971 | static struct sysrq_key_op sysrq_xmon_op = { |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 2972 | .handler = sysrq_handle_xmon, |
zhangwei(Jovi) | 90a102e | 2013-04-30 15:28:54 -0700 | [diff] [blame] | 2973 | .help_msg = "xmon(x)", |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 2974 | .action_msg = "Entering xmon", |
| 2975 | }; |
| 2976 | |
| 2977 | static int __init setup_xmon_sysrq(void) |
| 2978 | { |
| 2979 | register_sysrq_key('x', &sysrq_xmon_op); |
| 2980 | return 0; |
| 2981 | } |
| 2982 | __initcall(setup_xmon_sysrq); |
| 2983 | #endif /* CONFIG_MAGIC_SYSRQ */ |
Michael Ellerman | 47679283 | 2006-10-03 14:12:08 +1000 | [diff] [blame] | 2984 | |
Olaf Hering | f5e6a28 | 2007-06-24 16:57:08 +1000 | [diff] [blame] | 2985 | static int __initdata xmon_early, xmon_off; |
Michael Ellerman | 47679283 | 2006-10-03 14:12:08 +1000 | [diff] [blame] | 2986 | |
| 2987 | static int __init early_parse_xmon(char *p) |
| 2988 | { |
| 2989 | if (!p || strncmp(p, "early", 5) == 0) { |
| 2990 | /* just "xmon" is equivalent to "xmon=early" */ |
| 2991 | xmon_init(1); |
| 2992 | xmon_early = 1; |
| 2993 | } else if (strncmp(p, "on", 2) == 0) |
| 2994 | xmon_init(1); |
| 2995 | else if (strncmp(p, "off", 3) == 0) |
| 2996 | xmon_off = 1; |
| 2997 | else if (strncmp(p, "nobt", 4) == 0) |
| 2998 | xmon_no_auto_backtrace = 1; |
| 2999 | else |
| 3000 | return 1; |
| 3001 | |
| 3002 | return 0; |
| 3003 | } |
| 3004 | early_param("xmon", early_parse_xmon); |
| 3005 | |
| 3006 | void __init xmon_setup(void) |
| 3007 | { |
| 3008 | #ifdef CONFIG_XMON_DEFAULT |
| 3009 | if (!xmon_off) |
| 3010 | xmon_init(1); |
| 3011 | #endif |
| 3012 | if (xmon_early) |
| 3013 | debugger(NULL); |
| 3014 | } |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 3015 | |
Arnd Bergmann | e055595 | 2006-11-27 19:18:55 +0100 | [diff] [blame] | 3016 | #ifdef CONFIG_SPU_BASE |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 3017 | |
| 3018 | struct spu_info { |
| 3019 | struct spu *spu; |
| 3020 | u64 saved_mfc_sr1_RW; |
| 3021 | u32 saved_spu_runcntl_RW; |
Michael Ellerman | 24a24c8 | 2006-11-23 00:46:41 +0100 | [diff] [blame] | 3022 | unsigned long dump_addr; |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 3023 | u8 stopped_ok; |
| 3024 | }; |
| 3025 | |
| 3026 | #define XMON_NUM_SPUS 16 /* Enough for current hardware */ |
| 3027 | |
| 3028 | static struct spu_info spu_info[XMON_NUM_SPUS]; |
| 3029 | |
| 3030 | void xmon_register_spus(struct list_head *list) |
| 3031 | { |
| 3032 | struct spu *spu; |
| 3033 | |
| 3034 | list_for_each_entry(spu, list, full_list) { |
| 3035 | if (spu->number >= XMON_NUM_SPUS) { |
| 3036 | WARN_ON(1); |
| 3037 | continue; |
| 3038 | } |
| 3039 | |
| 3040 | spu_info[spu->number].spu = spu; |
| 3041 | spu_info[spu->number].stopped_ok = 0; |
Michael Ellerman | 24a24c8 | 2006-11-23 00:46:41 +0100 | [diff] [blame] | 3042 | spu_info[spu->number].dump_addr = (unsigned long) |
| 3043 | spu_info[spu->number].spu->local_store; |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 3044 | } |
| 3045 | } |
| 3046 | |
| 3047 | static void stop_spus(void) |
| 3048 | { |
| 3049 | struct spu *spu; |
| 3050 | int i; |
| 3051 | u64 tmp; |
| 3052 | |
| 3053 | for (i = 0; i < XMON_NUM_SPUS; i++) { |
| 3054 | if (!spu_info[i].spu) |
| 3055 | continue; |
| 3056 | |
| 3057 | if (setjmp(bus_error_jmp) == 0) { |
| 3058 | catch_memory_errors = 1; |
| 3059 | sync(); |
| 3060 | |
| 3061 | spu = spu_info[i].spu; |
| 3062 | |
| 3063 | spu_info[i].saved_spu_runcntl_RW = |
| 3064 | in_be32(&spu->problem->spu_runcntl_RW); |
| 3065 | |
| 3066 | tmp = spu_mfc_sr1_get(spu); |
| 3067 | spu_info[i].saved_mfc_sr1_RW = tmp; |
| 3068 | |
| 3069 | tmp &= ~MFC_STATE1_MASTER_RUN_CONTROL_MASK; |
| 3070 | spu_mfc_sr1_set(spu, tmp); |
| 3071 | |
| 3072 | sync(); |
| 3073 | __delay(200); |
| 3074 | |
| 3075 | spu_info[i].stopped_ok = 1; |
Michael Ellerman | 2a14442 | 2006-11-23 00:46:40 +0100 | [diff] [blame] | 3076 | |
| 3077 | printf("Stopped spu %.2d (was %s)\n", i, |
| 3078 | spu_info[i].saved_spu_runcntl_RW ? |
| 3079 | "running" : "stopped"); |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 3080 | } else { |
| 3081 | catch_memory_errors = 0; |
| 3082 | printf("*** Error stopping spu %.2d\n", i); |
| 3083 | } |
| 3084 | catch_memory_errors = 0; |
| 3085 | } |
| 3086 | } |
| 3087 | |
| 3088 | static void restart_spus(void) |
| 3089 | { |
| 3090 | struct spu *spu; |
| 3091 | int i; |
| 3092 | |
| 3093 | for (i = 0; i < XMON_NUM_SPUS; i++) { |
| 3094 | if (!spu_info[i].spu) |
| 3095 | continue; |
| 3096 | |
| 3097 | if (!spu_info[i].stopped_ok) { |
| 3098 | printf("*** Error, spu %d was not successfully stopped" |
| 3099 | ", not restarting\n", i); |
| 3100 | continue; |
| 3101 | } |
| 3102 | |
| 3103 | if (setjmp(bus_error_jmp) == 0) { |
| 3104 | catch_memory_errors = 1; |
| 3105 | sync(); |
| 3106 | |
| 3107 | spu = spu_info[i].spu; |
| 3108 | spu_mfc_sr1_set(spu, spu_info[i].saved_mfc_sr1_RW); |
| 3109 | out_be32(&spu->problem->spu_runcntl_RW, |
| 3110 | spu_info[i].saved_spu_runcntl_RW); |
| 3111 | |
| 3112 | sync(); |
| 3113 | __delay(200); |
| 3114 | |
| 3115 | printf("Restarted spu %.2d\n", i); |
| 3116 | } else { |
| 3117 | catch_memory_errors = 0; |
| 3118 | printf("*** Error restarting spu %.2d\n", i); |
| 3119 | } |
| 3120 | catch_memory_errors = 0; |
| 3121 | } |
| 3122 | } |
| 3123 | |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3124 | #define DUMP_WIDTH 23 |
Michael Ellerman | 437a070 | 2006-11-23 00:46:39 +0100 | [diff] [blame] | 3125 | #define DUMP_VALUE(format, field, value) \ |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3126 | do { \ |
| 3127 | if (setjmp(bus_error_jmp) == 0) { \ |
| 3128 | catch_memory_errors = 1; \ |
| 3129 | sync(); \ |
| 3130 | printf(" %-*s = "format"\n", DUMP_WIDTH, \ |
Michael Ellerman | 437a070 | 2006-11-23 00:46:39 +0100 | [diff] [blame] | 3131 | #field, value); \ |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3132 | sync(); \ |
| 3133 | __delay(200); \ |
| 3134 | } else { \ |
| 3135 | catch_memory_errors = 0; \ |
| 3136 | printf(" %-*s = *** Error reading field.\n", \ |
| 3137 | DUMP_WIDTH, #field); \ |
| 3138 | } \ |
| 3139 | catch_memory_errors = 0; \ |
| 3140 | } while (0) |
| 3141 | |
Michael Ellerman | 437a070 | 2006-11-23 00:46:39 +0100 | [diff] [blame] | 3142 | #define DUMP_FIELD(obj, format, field) \ |
| 3143 | DUMP_VALUE(format, field, obj->field) |
| 3144 | |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3145 | static void dump_spu_fields(struct spu *spu) |
| 3146 | { |
| 3147 | printf("Dumping spu fields at address %p:\n", spu); |
| 3148 | |
| 3149 | DUMP_FIELD(spu, "0x%x", number); |
| 3150 | DUMP_FIELD(spu, "%s", name); |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3151 | DUMP_FIELD(spu, "0x%lx", local_store_phys); |
| 3152 | DUMP_FIELD(spu, "0x%p", local_store); |
| 3153 | DUMP_FIELD(spu, "0x%lx", ls_size); |
| 3154 | DUMP_FIELD(spu, "0x%x", node); |
| 3155 | DUMP_FIELD(spu, "0x%lx", flags); |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3156 | DUMP_FIELD(spu, "%d", class_0_pending); |
Luke Browning | f3d69e0 | 2008-04-27 18:41:55 +0000 | [diff] [blame] | 3157 | DUMP_FIELD(spu, "0x%lx", class_0_dar); |
Luke Browning | f3d69e0 | 2008-04-27 18:41:55 +0000 | [diff] [blame] | 3158 | DUMP_FIELD(spu, "0x%lx", class_1_dar); |
| 3159 | DUMP_FIELD(spu, "0x%lx", class_1_dsisr); |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3160 | DUMP_FIELD(spu, "0x%lx", irqs[0]); |
| 3161 | DUMP_FIELD(spu, "0x%lx", irqs[1]); |
| 3162 | DUMP_FIELD(spu, "0x%lx", irqs[2]); |
| 3163 | DUMP_FIELD(spu, "0x%x", slb_replace); |
| 3164 | DUMP_FIELD(spu, "%d", pid); |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3165 | DUMP_FIELD(spu, "0x%p", mm); |
| 3166 | DUMP_FIELD(spu, "0x%p", ctx); |
| 3167 | DUMP_FIELD(spu, "0x%p", rq); |
| 3168 | DUMP_FIELD(spu, "0x%p", timestamp); |
| 3169 | DUMP_FIELD(spu, "0x%lx", problem_phys); |
| 3170 | DUMP_FIELD(spu, "0x%p", problem); |
Michael Ellerman | 437a070 | 2006-11-23 00:46:39 +0100 | [diff] [blame] | 3171 | DUMP_VALUE("0x%x", problem->spu_runcntl_RW, |
| 3172 | in_be32(&spu->problem->spu_runcntl_RW)); |
| 3173 | DUMP_VALUE("0x%x", problem->spu_status_R, |
| 3174 | in_be32(&spu->problem->spu_status_R)); |
| 3175 | DUMP_VALUE("0x%x", problem->spu_npc_RW, |
| 3176 | in_be32(&spu->problem->spu_npc_RW)); |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3177 | DUMP_FIELD(spu, "0x%p", priv2); |
Michael Ellerman | a985239 | 2006-11-23 00:46:50 +0100 | [diff] [blame] | 3178 | DUMP_FIELD(spu, "0x%p", pdata); |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3179 | } |
| 3180 | |
Michael Ellerman | af89fb8 | 2006-11-23 00:46:44 +0100 | [diff] [blame] | 3181 | int |
| 3182 | spu_inst_dump(unsigned long adr, long count, int praddr) |
| 3183 | { |
| 3184 | return generic_inst_dump(adr, count, praddr, print_insn_spu); |
| 3185 | } |
| 3186 | |
| 3187 | static void dump_spu_ls(unsigned long num, int subcmd) |
Michael Ellerman | 24a24c8 | 2006-11-23 00:46:41 +0100 | [diff] [blame] | 3188 | { |
| 3189 | unsigned long offset, addr, ls_addr; |
| 3190 | |
| 3191 | if (setjmp(bus_error_jmp) == 0) { |
| 3192 | catch_memory_errors = 1; |
| 3193 | sync(); |
| 3194 | ls_addr = (unsigned long)spu_info[num].spu->local_store; |
| 3195 | sync(); |
| 3196 | __delay(200); |
| 3197 | } else { |
| 3198 | catch_memory_errors = 0; |
| 3199 | printf("*** Error: accessing spu info for spu %d\n", num); |
| 3200 | return; |
| 3201 | } |
| 3202 | catch_memory_errors = 0; |
| 3203 | |
| 3204 | if (scanhex(&offset)) |
| 3205 | addr = ls_addr + offset; |
| 3206 | else |
| 3207 | addr = spu_info[num].dump_addr; |
| 3208 | |
| 3209 | if (addr >= ls_addr + LS_SIZE) { |
| 3210 | printf("*** Error: address outside of local store\n"); |
| 3211 | return; |
| 3212 | } |
| 3213 | |
Michael Ellerman | af89fb8 | 2006-11-23 00:46:44 +0100 | [diff] [blame] | 3214 | switch (subcmd) { |
| 3215 | case 'i': |
| 3216 | addr += spu_inst_dump(addr, 16, 1); |
| 3217 | last_cmd = "sdi\n"; |
| 3218 | break; |
| 3219 | default: |
| 3220 | prdump(addr, 64); |
| 3221 | addr += 64; |
| 3222 | last_cmd = "sd\n"; |
| 3223 | break; |
| 3224 | } |
Michael Ellerman | 24a24c8 | 2006-11-23 00:46:41 +0100 | [diff] [blame] | 3225 | |
| 3226 | spu_info[num].dump_addr = addr; |
| 3227 | } |
| 3228 | |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 3229 | static int do_spu_cmd(void) |
| 3230 | { |
Michael Ellerman | 24a24c8 | 2006-11-23 00:46:41 +0100 | [diff] [blame] | 3231 | static unsigned long num = 0; |
Michael Ellerman | af89fb8 | 2006-11-23 00:46:44 +0100 | [diff] [blame] | 3232 | int cmd, subcmd = 0; |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 3233 | |
| 3234 | cmd = inchar(); |
| 3235 | switch (cmd) { |
| 3236 | case 's': |
| 3237 | stop_spus(); |
| 3238 | break; |
| 3239 | case 'r': |
| 3240 | restart_spus(); |
| 3241 | break; |
Michael Ellerman | 24a24c8 | 2006-11-23 00:46:41 +0100 | [diff] [blame] | 3242 | case 'd': |
Michael Ellerman | af89fb8 | 2006-11-23 00:46:44 +0100 | [diff] [blame] | 3243 | subcmd = inchar(); |
| 3244 | if (isxdigit(subcmd) || subcmd == '\n') |
| 3245 | termch = subcmd; |
| 3246 | case 'f': |
Michael Ellerman | 24a24c8 | 2006-11-23 00:46:41 +0100 | [diff] [blame] | 3247 | scanhex(&num); |
| 3248 | if (num >= XMON_NUM_SPUS || !spu_info[num].spu) { |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3249 | printf("*** Error: invalid spu number\n"); |
Michael Ellerman | 24a24c8 | 2006-11-23 00:46:41 +0100 | [diff] [blame] | 3250 | return 0; |
| 3251 | } |
| 3252 | |
| 3253 | switch (cmd) { |
| 3254 | case 'f': |
| 3255 | dump_spu_fields(spu_info[num].spu); |
| 3256 | break; |
| 3257 | default: |
Michael Ellerman | af89fb8 | 2006-11-23 00:46:44 +0100 | [diff] [blame] | 3258 | dump_spu_ls(num, subcmd); |
Michael Ellerman | 24a24c8 | 2006-11-23 00:46:41 +0100 | [diff] [blame] | 3259 | break; |
| 3260 | } |
| 3261 | |
Michael Ellerman | a898497 | 2006-10-24 18:31:28 +0200 | [diff] [blame] | 3262 | break; |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 3263 | default: |
| 3264 | return -1; |
| 3265 | } |
| 3266 | |
| 3267 | return 0; |
| 3268 | } |
Arnd Bergmann | e055595 | 2006-11-27 19:18:55 +0100 | [diff] [blame] | 3269 | #else /* ! CONFIG_SPU_BASE */ |
Michael Ellerman | ff8a8f2 | 2006-10-24 18:31:27 +0200 | [diff] [blame] | 3270 | static int do_spu_cmd(void) |
| 3271 | { |
| 3272 | return -1; |
| 3273 | } |
| 3274 | #endif |