The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1 | /* |
| 2 | * common defines for all CPUs |
| 3 | * |
| 4 | * Copyright (c) 2003 Fabrice Bellard |
| 5 | * |
| 6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * This library is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with this library; if not, write to the Free Software |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 19 | */ |
| 20 | #ifndef CPU_DEFS_H |
| 21 | #define CPU_DEFS_H |
| 22 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 23 | #if 0 /* ANDROID */ |
| 24 | #ifndef NEED_CPU_H |
| 25 | #error cpu.h included from common code |
| 26 | #endif |
| 27 | #endif /* ANDROID */ |
| 28 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 29 | #include "config.h" |
| 30 | #include <setjmp.h> |
| 31 | #include <inttypes.h> |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 32 | #include <signal.h> |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 33 | #include "osdep.h" |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 34 | #include "sys-queue.h" |
| 35 | #include "targphys.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 36 | |
| 37 | #ifndef TARGET_LONG_BITS |
| 38 | #error TARGET_LONG_BITS must be defined before including this header |
| 39 | #endif |
| 40 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 41 | #define TARGET_LONG_SIZE (TARGET_LONG_BITS / 8) |
| 42 | |
| 43 | /* target_ulong is the type of a virtual address */ |
| 44 | #if TARGET_LONG_SIZE == 4 |
| 45 | typedef int32_t target_long; |
| 46 | typedef uint32_t target_ulong; |
| 47 | #define TARGET_FMT_lx "%08x" |
| 48 | #define TARGET_FMT_ld "%d" |
| 49 | #define TARGET_FMT_lu "%u" |
| 50 | #elif TARGET_LONG_SIZE == 8 |
| 51 | typedef int64_t target_long; |
| 52 | typedef uint64_t target_ulong; |
| 53 | #define TARGET_FMT_lx "%016" PRIx64 |
| 54 | #define TARGET_FMT_ld "%" PRId64 |
| 55 | #define TARGET_FMT_lu "%" PRIu64 |
| 56 | #else |
| 57 | #error TARGET_LONG_SIZE undefined |
| 58 | #endif |
| 59 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 60 | #define HOST_LONG_SIZE (HOST_LONG_BITS / 8) |
| 61 | |
| 62 | #define EXCP_INTERRUPT 0x10000 /* async interruption */ |
| 63 | #define EXCP_HLT 0x10001 /* hlt instruction reached */ |
| 64 | #define EXCP_DEBUG 0x10002 /* cpu stopped after a breakpoint or singlestep */ |
| 65 | #define EXCP_HALTED 0x10003 /* cpu is halted (waiting for external event) */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 66 | |
| 67 | #define TB_JMP_CACHE_BITS 12 |
| 68 | #define TB_JMP_CACHE_SIZE (1 << TB_JMP_CACHE_BITS) |
| 69 | |
| 70 | /* Only the bottom TB_JMP_PAGE_BITS of the jump cache hash bits vary for |
| 71 | addresses on the same page. The top bits are the same. This allows |
| 72 | TLB invalidation to quickly clear a subset of the hash table. */ |
| 73 | #define TB_JMP_PAGE_BITS (TB_JMP_CACHE_BITS / 2) |
| 74 | #define TB_JMP_PAGE_SIZE (1 << TB_JMP_PAGE_BITS) |
| 75 | #define TB_JMP_ADDR_MASK (TB_JMP_PAGE_SIZE - 1) |
| 76 | #define TB_JMP_PAGE_MASK (TB_JMP_CACHE_SIZE - TB_JMP_PAGE_SIZE) |
| 77 | |
| 78 | #define CPU_TLB_BITS 8 |
| 79 | #define CPU_TLB_SIZE (1 << CPU_TLB_BITS) |
| 80 | |
| 81 | #if TARGET_PHYS_ADDR_BITS == 32 && TARGET_LONG_BITS == 32 |
| 82 | #define CPU_TLB_ENTRY_BITS 4 |
| 83 | #else |
| 84 | #define CPU_TLB_ENTRY_BITS 5 |
| 85 | #endif |
| 86 | |
| 87 | typedef struct CPUTLBEntry { |
| 88 | /* bit TARGET_LONG_BITS to TARGET_PAGE_BITS : virtual address |
| 89 | bit TARGET_PAGE_BITS-1..4 : Nonzero for accesses that should not |
| 90 | go directly to ram. |
| 91 | bit 3 : indicates that the entry is invalid |
| 92 | bit 2..0 : zero |
| 93 | */ |
| 94 | target_ulong addr_read; |
| 95 | target_ulong addr_write; |
| 96 | target_ulong addr_code; |
| 97 | /* Addend to virtual address to get physical address. IO accesses |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 98 | use the corresponding iotlb value. */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 99 | #if TARGET_PHYS_ADDR_BITS == 64 |
| 100 | /* on i386 Linux make sure it is aligned */ |
| 101 | target_phys_addr_t addend __attribute__((aligned(8))); |
| 102 | #else |
| 103 | target_phys_addr_t addend; |
| 104 | #endif |
| 105 | /* padding to get a power of two size */ |
| 106 | uint8_t dummy[(1 << CPU_TLB_ENTRY_BITS) - |
| 107 | (sizeof(target_ulong) * 3 + |
| 108 | ((-sizeof(target_ulong) * 3) & (sizeof(target_phys_addr_t) - 1)) + |
| 109 | sizeof(target_phys_addr_t))]; |
| 110 | } CPUTLBEntry; |
| 111 | |
David 'Digit' Turner | 20894ae | 2010-05-10 17:07:36 -0700 | [diff] [blame^] | 112 | #ifdef HOST_WORDS_BIGENDIAN |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 113 | typedef struct icount_decr_u16 { |
| 114 | uint16_t high; |
| 115 | uint16_t low; |
| 116 | } icount_decr_u16; |
| 117 | #else |
| 118 | typedef struct icount_decr_u16 { |
| 119 | uint16_t low; |
| 120 | uint16_t high; |
| 121 | } icount_decr_u16; |
| 122 | #endif |
| 123 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 124 | struct kvm_run; |
| 125 | struct KVMState; |
| 126 | |
| 127 | typedef struct CPUBreakpoint { |
| 128 | target_ulong pc; |
| 129 | int flags; /* BP_* */ |
| 130 | TAILQ_ENTRY(CPUBreakpoint) entry; |
| 131 | } CPUBreakpoint; |
| 132 | |
| 133 | typedef struct CPUWatchpoint { |
| 134 | target_ulong vaddr; |
| 135 | target_ulong len_mask; |
| 136 | int flags; /* BP_* */ |
| 137 | TAILQ_ENTRY(CPUWatchpoint) entry; |
| 138 | } CPUWatchpoint; |
| 139 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 140 | #define CPU_TEMP_BUF_NLONGS 128 |
| 141 | #define CPU_COMMON \ |
| 142 | struct TranslationBlock *current_tb; /* currently executing TB */ \ |
| 143 | /* soft mmu support */ \ |
| 144 | /* in order to avoid passing too many arguments to the MMIO \ |
| 145 | helpers, we store some rarely used information in the CPU \ |
| 146 | context) */ \ |
| 147 | unsigned long mem_io_pc; /* host pc at which the memory was \ |
| 148 | accessed */ \ |
| 149 | target_ulong mem_io_vaddr; /* target virtual addr at which the \ |
| 150 | memory was accessed */ \ |
| 151 | uint32_t halted; /* Nonzero if the CPU is in suspend state */ \ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 152 | uint32_t stop; /* Stop request */ \ |
| 153 | uint32_t stopped; /* Artificially stopped */ \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 154 | uint32_t interrupt_request; \ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 155 | volatile sig_atomic_t exit_request; \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 156 | /* The meaning of the MMU modes is defined in the target code. */ \ |
| 157 | CPUTLBEntry tlb_table[NB_MMU_MODES][CPU_TLB_SIZE]; \ |
| 158 | target_phys_addr_t iotlb[NB_MMU_MODES][CPU_TLB_SIZE]; \ |
| 159 | struct TranslationBlock *tb_jmp_cache[TB_JMP_CACHE_SIZE]; \ |
| 160 | /* buffer for temporaries in the code generator */ \ |
| 161 | long temp_buf[CPU_TEMP_BUF_NLONGS]; \ |
| 162 | \ |
| 163 | int64_t icount_extra; /* Instructions until next timer event. */ \ |
| 164 | /* Number of cycles left, with interrupt flag in high bit. \ |
| 165 | This allows a single read-compare-cbranch-write sequence to test \ |
| 166 | for both decrementer underflow and exceptions. */ \ |
| 167 | union { \ |
| 168 | uint32_t u32; \ |
| 169 | icount_decr_u16 u16; \ |
| 170 | } icount_decr; \ |
| 171 | uint32_t can_do_io; /* nonzero if memory mapped IO is safe. */ \ |
| 172 | \ |
| 173 | /* from this point: preserved by CPU reset */ \ |
| 174 | /* ice debug support */ \ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 175 | TAILQ_HEAD(breakpoints_head, CPUBreakpoint) breakpoints; \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 176 | int singlestep_enabled; \ |
| 177 | \ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 178 | TAILQ_HEAD(watchpoints_head, CPUWatchpoint) watchpoints; \ |
| 179 | CPUWatchpoint *watchpoint_hit; \ |
| 180 | \ |
| 181 | struct GDBRegisterState *gdb_regs; \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 182 | \ |
| 183 | /* Core interrupt code */ \ |
| 184 | jmp_buf jmp_env; \ |
| 185 | int exception_index; \ |
| 186 | \ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 187 | CPUState *next_cpu; /* next CPU sharing TB cache */ \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 188 | int cpu_index; /* CPU index (informative) */ \ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 189 | uint32_t host_tid; /* host thread ID */ \ |
| 190 | int numa_node; /* NUMA node this cpu is belonging to */ \ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 191 | int running; /* Nonzero if cpu is currently running(usermode). */ \ |
| 192 | /* user data */ \ |
| 193 | void *opaque; \ |
| 194 | \ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 195 | uint32_t created; \ |
| 196 | struct QemuThread *thread; \ |
| 197 | struct QemuCond *halt_cond; \ |
| 198 | const char *cpu_model_str; \ |
| 199 | struct KVMState *kvm_state; \ |
| 200 | struct kvm_run *kvm_run; \ |
| 201 | int kvm_fd; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 202 | |
| 203 | #endif |