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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * Copyright (C) 1995-1999 Gary Thomas, Paul Mackerras, Cort Dougan.
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 */
Kumar Gala5f7c6902005-09-09 15:02:25 -05004#ifndef _ASM_POWERPC_PPC_ASM_H
5#define _ASM_POWERPC_PPC_ASM_H
6
Tim Abbott9203fc92009-04-27 14:02:24 -04007#include <linux/init.h>
Paul Mackerras40ef8cb2005-10-10 22:50:37 +10008#include <linux/stringify.h>
David Gibson3ddfbcf2005-11-10 12:56:55 +11009#include <asm/asm-compat.h>
Michael Neuling9c75a312008-06-26 17:07:48 +100010#include <asm/processor.h>
Kumar Gala16c57b32009-02-10 20:10:44 +000011#include <asm/ppc-opcode.h>
Paul Mackerrascf9efce2010-08-26 19:56:43 +000012#include <asm/firmware.h>
Paul Mackerras40ef8cb2005-10-10 22:50:37 +100013
David Gibson3ddfbcf2005-11-10 12:56:55 +110014#ifndef __ASSEMBLY__
15#error __FILE__ should only be used in assembler files
16#else
17
18#define SZL (BITS_PER_LONG/8)
Linus Torvalds1da177e2005-04-16 15:20:36 -070019
20/*
Paul Mackerrasc6622f62006-02-24 10:06:59 +110021 * Stuff for accurate CPU time accounting.
22 * These macros handle transitions between user and system state
23 * in exception entry and exit and accumulate time to the
24 * user_time and system_time fields in the paca.
25 */
26
27#ifndef CONFIG_VIRT_CPU_ACCOUNTING
28#define ACCOUNT_CPU_USER_ENTRY(ra, rb)
29#define ACCOUNT_CPU_USER_EXIT(ra, rb)
Paul Mackerrascf9efce2010-08-26 19:56:43 +000030#define ACCOUNT_STOLEN_TIME
Paul Mackerrasc6622f62006-02-24 10:06:59 +110031#else
32#define ACCOUNT_CPU_USER_ENTRY(ra, rb) \
33 beq 2f; /* if from kernel mode */ \
Paul Mackerrascf9efce2010-08-26 19:56:43 +000034 MFTB(ra); /* get timebase */ \
35 ld rb,PACA_STARTTIME_USER(r13); \
36 std ra,PACA_STARTTIME(r13); \
Paul Mackerrasc6622f62006-02-24 10:06:59 +110037 subf rb,rb,ra; /* subtract start value */ \
38 ld ra,PACA_USER_TIME(r13); \
39 add ra,ra,rb; /* add on to user time */ \
40 std ra,PACA_USER_TIME(r13); \
412:
42
43#define ACCOUNT_CPU_USER_EXIT(ra, rb) \
Paul Mackerrascf9efce2010-08-26 19:56:43 +000044 MFTB(ra); /* get timebase */ \
45 ld rb,PACA_STARTTIME(r13); \
46 std ra,PACA_STARTTIME_USER(r13); \
Paul Mackerrasc6622f62006-02-24 10:06:59 +110047 subf rb,rb,ra; /* subtract start value */ \
48 ld ra,PACA_SYSTEM_TIME(r13); \
Paul Mackerrascf9efce2010-08-26 19:56:43 +000049 add ra,ra,rb; /* add on to system time */ \
50 std ra,PACA_SYSTEM_TIME(r13)
51
52#ifdef CONFIG_PPC_SPLPAR
53#define ACCOUNT_STOLEN_TIME \
54BEGIN_FW_FTR_SECTION; \
55 beq 33f; \
56 /* from user - see if there are any DTL entries to process */ \
57 ld r10,PACALPPACAPTR(r13); /* get ptr to VPA */ \
58 ld r11,PACA_DTL_RIDX(r13); /* get log read index */ \
59 ld r10,LPPACA_DTLIDX(r10); /* get log write index */ \
60 cmpd cr1,r11,r10; \
61 beq+ cr1,33f; \
62 bl .accumulate_stolen_time; \
Benjamin Herrenschmidt990118c2012-03-02 11:01:31 +110063 ld r12,_MSR(r1); \
64 andi. r10,r12,MSR_PR; /* Restore cr0 (coming from user) */ \
Paul Mackerrascf9efce2010-08-26 19:56:43 +00006533: \
66END_FW_FTR_SECTION_IFSET(FW_FEATURE_SPLPAR)
67
68#else /* CONFIG_PPC_SPLPAR */
69#define ACCOUNT_STOLEN_TIME
70
71#endif /* CONFIG_PPC_SPLPAR */
72
73#endif /* CONFIG_VIRT_CPU_ACCOUNTING */
Paul Mackerrasc6622f62006-02-24 10:06:59 +110074
75/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070076 * Macros for storing registers into and loading registers from
77 * exception frames.
78 */
Kumar Gala5f7c6902005-09-09 15:02:25 -050079#ifdef __powerpc64__
80#define SAVE_GPR(n, base) std n,GPR0+8*(n)(base)
81#define REST_GPR(n, base) ld n,GPR0+8*(n)(base)
82#define SAVE_NVGPRS(base) SAVE_8GPRS(14, base); SAVE_10GPRS(22, base)
83#define REST_NVGPRS(base) REST_8GPRS(14, base); REST_10GPRS(22, base)
84#else
Linus Torvalds1da177e2005-04-16 15:20:36 -070085#define SAVE_GPR(n, base) stw n,GPR0+4*(n)(base)
Linus Torvalds1da177e2005-04-16 15:20:36 -070086#define REST_GPR(n, base) lwz n,GPR0+4*(n)(base)
Linus Torvalds1da177e2005-04-16 15:20:36 -070087#define SAVE_NVGPRS(base) SAVE_GPR(13, base); SAVE_8GPRS(14, base); \
88 SAVE_10GPRS(22, base)
89#define REST_NVGPRS(base) REST_GPR(13, base); REST_8GPRS(14, base); \
90 REST_10GPRS(22, base)
Kumar Gala5f7c6902005-09-09 15:02:25 -050091#endif
92
Kumar Gala5f7c6902005-09-09 15:02:25 -050093#define SAVE_2GPRS(n, base) SAVE_GPR(n, base); SAVE_GPR(n+1, base)
94#define SAVE_4GPRS(n, base) SAVE_2GPRS(n, base); SAVE_2GPRS(n+2, base)
95#define SAVE_8GPRS(n, base) SAVE_4GPRS(n, base); SAVE_4GPRS(n+4, base)
96#define SAVE_10GPRS(n, base) SAVE_8GPRS(n, base); SAVE_2GPRS(n+8, base)
97#define REST_2GPRS(n, base) REST_GPR(n, base); REST_GPR(n+1, base)
98#define REST_4GPRS(n, base) REST_2GPRS(n, base); REST_2GPRS(n+2, base)
99#define REST_8GPRS(n, base) REST_4GPRS(n, base); REST_4GPRS(n+4, base)
100#define REST_10GPRS(n, base) REST_8GPRS(n, base); REST_2GPRS(n+8, base)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101
Michael Neuling9c75a312008-06-26 17:07:48 +1000102#define SAVE_FPR(n, base) stfd n,THREAD_FPR0+8*TS_FPRWIDTH*(n)(base)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103#define SAVE_2FPRS(n, base) SAVE_FPR(n, base); SAVE_FPR(n+1, base)
104#define SAVE_4FPRS(n, base) SAVE_2FPRS(n, base); SAVE_2FPRS(n+2, base)
105#define SAVE_8FPRS(n, base) SAVE_4FPRS(n, base); SAVE_4FPRS(n+4, base)
106#define SAVE_16FPRS(n, base) SAVE_8FPRS(n, base); SAVE_8FPRS(n+8, base)
107#define SAVE_32FPRS(n, base) SAVE_16FPRS(n, base); SAVE_16FPRS(n+16, base)
Michael Neuling9c75a312008-06-26 17:07:48 +1000108#define REST_FPR(n, base) lfd n,THREAD_FPR0+8*TS_FPRWIDTH*(n)(base)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109#define REST_2FPRS(n, base) REST_FPR(n, base); REST_FPR(n+1, base)
110#define REST_4FPRS(n, base) REST_2FPRS(n, base); REST_2FPRS(n+2, base)
111#define REST_8FPRS(n, base) REST_4FPRS(n, base); REST_4FPRS(n+4, base)
112#define REST_16FPRS(n, base) REST_8FPRS(n, base); REST_8FPRS(n+8, base)
113#define REST_32FPRS(n, base) REST_16FPRS(n, base); REST_16FPRS(n+16, base)
114
Michael Wolf23e55f92009-08-20 13:21:45 +0000115#define SAVE_VR(n,b,base) li b,THREAD_VR0+(16*(n)); stvx n,base,b
Kumar Gala5f7c6902005-09-09 15:02:25 -0500116#define SAVE_2VRS(n,b,base) SAVE_VR(n,b,base); SAVE_VR(n+1,b,base)
117#define SAVE_4VRS(n,b,base) SAVE_2VRS(n,b,base); SAVE_2VRS(n+2,b,base)
118#define SAVE_8VRS(n,b,base) SAVE_4VRS(n,b,base); SAVE_4VRS(n+4,b,base)
119#define SAVE_16VRS(n,b,base) SAVE_8VRS(n,b,base); SAVE_8VRS(n+8,b,base)
120#define SAVE_32VRS(n,b,base) SAVE_16VRS(n,b,base); SAVE_16VRS(n+16,b,base)
Michael Wolf23e55f92009-08-20 13:21:45 +0000121#define REST_VR(n,b,base) li b,THREAD_VR0+(16*(n)); lvx n,base,b
Kumar Gala5f7c6902005-09-09 15:02:25 -0500122#define REST_2VRS(n,b,base) REST_VR(n,b,base); REST_VR(n+1,b,base)
123#define REST_4VRS(n,b,base) REST_2VRS(n,b,base); REST_2VRS(n+2,b,base)
124#define REST_8VRS(n,b,base) REST_4VRS(n,b,base); REST_4VRS(n+4,b,base)
125#define REST_16VRS(n,b,base) REST_8VRS(n,b,base); REST_8VRS(n+8,b,base)
126#define REST_32VRS(n,b,base) REST_16VRS(n,b,base); REST_16VRS(n+16,b,base)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127
Michael Neuling72ffff52008-06-25 14:07:18 +1000128/* Save the lower 32 VSRs in the thread VSR region */
Michael Wolf23e55f92009-08-20 13:21:45 +0000129#define SAVE_VSR(n,b,base) li b,THREAD_VSR0+(16*(n)); STXVD2X(n,base,b)
Michael Neuling72ffff52008-06-25 14:07:18 +1000130#define SAVE_2VSRS(n,b,base) SAVE_VSR(n,b,base); SAVE_VSR(n+1,b,base)
131#define SAVE_4VSRS(n,b,base) SAVE_2VSRS(n,b,base); SAVE_2VSRS(n+2,b,base)
132#define SAVE_8VSRS(n,b,base) SAVE_4VSRS(n,b,base); SAVE_4VSRS(n+4,b,base)
133#define SAVE_16VSRS(n,b,base) SAVE_8VSRS(n,b,base); SAVE_8VSRS(n+8,b,base)
134#define SAVE_32VSRS(n,b,base) SAVE_16VSRS(n,b,base); SAVE_16VSRS(n+16,b,base)
Michael Wolf23e55f92009-08-20 13:21:45 +0000135#define REST_VSR(n,b,base) li b,THREAD_VSR0+(16*(n)); LXVD2X(n,base,b)
Michael Neuling72ffff52008-06-25 14:07:18 +1000136#define REST_2VSRS(n,b,base) REST_VSR(n,b,base); REST_VSR(n+1,b,base)
137#define REST_4VSRS(n,b,base) REST_2VSRS(n,b,base); REST_2VSRS(n+2,b,base)
138#define REST_8VSRS(n,b,base) REST_4VSRS(n,b,base); REST_4VSRS(n+4,b,base)
139#define REST_16VSRS(n,b,base) REST_8VSRS(n,b,base); REST_8VSRS(n+8,b,base)
140#define REST_32VSRS(n,b,base) REST_16VSRS(n,b,base); REST_16VSRS(n+16,b,base)
141/* Save the upper 32 VSRs (32-63) in the thread VSX region (0-31) */
Michael Wolf23e55f92009-08-20 13:21:45 +0000142#define SAVE_VSRU(n,b,base) li b,THREAD_VR0+(16*(n)); STXVD2X(n+32,base,b)
Michael Neuling72ffff52008-06-25 14:07:18 +1000143#define SAVE_2VSRSU(n,b,base) SAVE_VSRU(n,b,base); SAVE_VSRU(n+1,b,base)
144#define SAVE_4VSRSU(n,b,base) SAVE_2VSRSU(n,b,base); SAVE_2VSRSU(n+2,b,base)
145#define SAVE_8VSRSU(n,b,base) SAVE_4VSRSU(n,b,base); SAVE_4VSRSU(n+4,b,base)
146#define SAVE_16VSRSU(n,b,base) SAVE_8VSRSU(n,b,base); SAVE_8VSRSU(n+8,b,base)
147#define SAVE_32VSRSU(n,b,base) SAVE_16VSRSU(n,b,base); SAVE_16VSRSU(n+16,b,base)
Michael Wolf23e55f92009-08-20 13:21:45 +0000148#define REST_VSRU(n,b,base) li b,THREAD_VR0+(16*(n)); LXVD2X(n+32,base,b)
Michael Neuling72ffff52008-06-25 14:07:18 +1000149#define REST_2VSRSU(n,b,base) REST_VSRU(n,b,base); REST_VSRU(n+1,b,base)
150#define REST_4VSRSU(n,b,base) REST_2VSRSU(n,b,base); REST_2VSRSU(n+2,b,base)
151#define REST_8VSRSU(n,b,base) REST_4VSRSU(n,b,base); REST_4VSRSU(n+4,b,base)
152#define REST_16VSRSU(n,b,base) REST_8VSRSU(n,b,base); REST_8VSRSU(n+8,b,base)
153#define REST_32VSRSU(n,b,base) REST_16VSRSU(n,b,base); REST_16VSRSU(n+16,b,base)
154
Scott Woodc51584d2011-06-14 18:34:27 -0500155/*
156 * b = base register for addressing, o = base offset from register of 1st EVR
157 * n = first EVR, s = scratch
158 */
159#define SAVE_EVR(n,s,b,o) evmergehi s,s,n; stw s,o+4*(n)(b)
160#define SAVE_2EVRS(n,s,b,o) SAVE_EVR(n,s,b,o); SAVE_EVR(n+1,s,b,o)
161#define SAVE_4EVRS(n,s,b,o) SAVE_2EVRS(n,s,b,o); SAVE_2EVRS(n+2,s,b,o)
162#define SAVE_8EVRS(n,s,b,o) SAVE_4EVRS(n,s,b,o); SAVE_4EVRS(n+4,s,b,o)
163#define SAVE_16EVRS(n,s,b,o) SAVE_8EVRS(n,s,b,o); SAVE_8EVRS(n+8,s,b,o)
164#define SAVE_32EVRS(n,s,b,o) SAVE_16EVRS(n,s,b,o); SAVE_16EVRS(n+16,s,b,o)
165#define REST_EVR(n,s,b,o) lwz s,o+4*(n)(b); evmergelo n,s,n
166#define REST_2EVRS(n,s,b,o) REST_EVR(n,s,b,o); REST_EVR(n+1,s,b,o)
167#define REST_4EVRS(n,s,b,o) REST_2EVRS(n,s,b,o); REST_2EVRS(n+2,s,b,o)
168#define REST_8EVRS(n,s,b,o) REST_4EVRS(n,s,b,o); REST_4EVRS(n+4,s,b,o)
169#define REST_16EVRS(n,s,b,o) REST_8EVRS(n,s,b,o); REST_8EVRS(n+8,s,b,o)
170#define REST_32EVRS(n,s,b,o) REST_16EVRS(n,s,b,o); REST_16EVRS(n+16,s,b,o)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171
Michael Ellerman8c716322005-10-24 15:07:27 +1000172/* Macros to adjust thread priority for hardware multithreading */
173#define HMT_VERY_LOW or 31,31,31 # very low priority
174#define HMT_LOW or 1,1,1
175#define HMT_MEDIUM_LOW or 6,6,6 # medium low priority
176#define HMT_MEDIUM or 2,2,2
177#define HMT_MEDIUM_HIGH or 5,5,5 # medium high priority
178#define HMT_HIGH or 3,3,3
Benjamin Herrenschmidt50fb8eb2011-01-12 17:41:28 +1100179#define HMT_EXTRA_HIGH or 7,7,7 # power7 only
Kumar Gala5f7c6902005-09-09 15:02:25 -0500180
Arnd Bergmann88ced032005-12-16 22:43:46 +0100181#ifdef __KERNEL__
Paul Mackerras40ef8cb2005-10-10 22:50:37 +1000182#ifdef CONFIG_PPC64
183
184#define XGLUE(a,b) a##b
185#define GLUE(a,b) XGLUE(a,b)
186
187#define _GLOBAL(name) \
188 .section ".text"; \
189 .align 2 ; \
190 .globl name; \
191 .globl GLUE(.,name); \
192 .section ".opd","aw"; \
193name: \
194 .quad GLUE(.,name); \
195 .quad .TOC.@tocbase; \
196 .quad 0; \
197 .previous; \
198 .type GLUE(.,name),@function; \
199GLUE(.,name):
200
Stephen Rothwellfc68e862007-08-22 13:44:58 +1000201#define _INIT_GLOBAL(name) \
Tim Abbott9203fc92009-04-27 14:02:24 -0400202 __REF; \
Stephen Rothwellfc68e862007-08-22 13:44:58 +1000203 .align 2 ; \
204 .globl name; \
205 .globl GLUE(.,name); \
206 .section ".opd","aw"; \
207name: \
208 .quad GLUE(.,name); \
209 .quad .TOC.@tocbase; \
210 .quad 0; \
211 .previous; \
212 .type GLUE(.,name),@function; \
213GLUE(.,name):
214
Paul Mackerras40ef8cb2005-10-10 22:50:37 +1000215#define _KPROBE(name) \
216 .section ".kprobes.text","a"; \
217 .align 2 ; \
218 .globl name; \
219 .globl GLUE(.,name); \
220 .section ".opd","aw"; \
221name: \
222 .quad GLUE(.,name); \
223 .quad .TOC.@tocbase; \
224 .quad 0; \
225 .previous; \
226 .type GLUE(.,name),@function; \
227GLUE(.,name):
228
229#define _STATIC(name) \
230 .section ".text"; \
231 .align 2 ; \
232 .section ".opd","aw"; \
233name: \
234 .quad GLUE(.,name); \
235 .quad .TOC.@tocbase; \
236 .quad 0; \
237 .previous; \
238 .type GLUE(.,name),@function; \
239GLUE(.,name):
240
Stephen Rothwellc40b91b2007-07-25 09:27:35 +1000241#define _INIT_STATIC(name) \
Tim Abbott9203fc92009-04-27 14:02:24 -0400242 __REF; \
Stephen Rothwellc40b91b2007-07-25 09:27:35 +1000243 .align 2 ; \
244 .section ".opd","aw"; \
245name: \
246 .quad GLUE(.,name); \
247 .quad .TOC.@tocbase; \
248 .quad 0; \
249 .previous; \
250 .type GLUE(.,name),@function; \
251GLUE(.,name):
252
Paul Mackerras40ef8cb2005-10-10 22:50:37 +1000253#else /* 32-bit */
254
Kumar Gala748a7682007-09-13 15:42:35 -0500255#define _ENTRY(n) \
256 .globl n; \
257n:
258
Paul Mackerras40ef8cb2005-10-10 22:50:37 +1000259#define _GLOBAL(n) \
260 .text; \
261 .stabs __stringify(n:F-1),N_FUN,0,0,n;\
262 .globl n; \
263n:
264
265#define _KPROBE(n) \
266 .section ".kprobes.text","a"; \
267 .globl n; \
268n:
269
270#endif
271
Kumar Gala5f7c6902005-09-09 15:02:25 -0500272/*
David Gibsone58c3492006-01-13 14:56:25 +1100273 * LOAD_REG_IMMEDIATE(rn, expr)
274 * Loads the value of the constant expression 'expr' into register 'rn'
275 * using immediate instructions only. Use this when it's important not
276 * to reference other data (i.e. on ppc64 when the TOC pointer is not
Paul Mackerrase31aa452008-08-30 11:41:12 +1000277 * valid) and when 'expr' is a constant or absolute address.
Kumar Gala5f7c6902005-09-09 15:02:25 -0500278 *
David Gibsone58c3492006-01-13 14:56:25 +1100279 * LOAD_REG_ADDR(rn, name)
280 * Loads the address of label 'name' into register 'rn'. Use this when
281 * you don't particularly need immediate instructions only, but you need
282 * the whole address in one register (e.g. it's a structure address and
283 * you want to access various offsets within it). On ppc32 this is
284 * identical to LOAD_REG_IMMEDIATE.
285 *
286 * LOAD_REG_ADDRBASE(rn, name)
287 * ADDROFF(name)
288 * LOAD_REG_ADDRBASE loads part of the address of label 'name' into
289 * register 'rn'. ADDROFF(name) returns the remainder of the address as
290 * a constant expression. ADDROFF(name) is a signed expression < 16 bits
291 * in size, so is suitable for use directly as an offset in load and store
292 * instructions. Use this when loading/storing a single word or less as:
293 * LOAD_REG_ADDRBASE(rX, name)
294 * ld rY,ADDROFF(name)(rX)
Kumar Gala5f7c6902005-09-09 15:02:25 -0500295 */
296#ifdef __powerpc64__
David Gibsone58c3492006-01-13 14:56:25 +1100297#define LOAD_REG_IMMEDIATE(reg,expr) \
Michael Neuling564aa5c2012-06-25 13:33:09 +0000298 lis reg,(expr)@highest; \
299 ori reg,reg,(expr)@higher; \
300 rldicr reg,reg,32,31; \
301 oris reg,reg,(expr)@h; \
302 ori reg,reg,(expr)@l;
Kumar Gala5f7c6902005-09-09 15:02:25 -0500303
David Gibsone58c3492006-01-13 14:56:25 +1100304#define LOAD_REG_ADDR(reg,name) \
Michael Neuling564aa5c2012-06-25 13:33:09 +0000305 ld reg,name@got(r2)
Kumar Gala5f7c6902005-09-09 15:02:25 -0500306
David Gibsone58c3492006-01-13 14:56:25 +1100307#define LOAD_REG_ADDRBASE(reg,name) LOAD_REG_ADDR(reg,name)
308#define ADDROFF(name) 0
Paul Mackerrasb85a0462005-10-06 10:59:19 +1000309
Paul Mackerrasf78541dc2005-10-28 22:53:37 +1000310/* offsets for stack frame layout */
311#define LRSAVE 16
Paul Mackerrasb85a0462005-10-06 10:59:19 +1000312
313#else /* 32-bit */
Stephen Rothwell70620182005-10-12 17:44:55 +1000314
David Gibsone58c3492006-01-13 14:56:25 +1100315#define LOAD_REG_IMMEDIATE(reg,expr) \
Michael Neuling564aa5c2012-06-25 13:33:09 +0000316 lis reg,(expr)@ha; \
317 addi reg,reg,(expr)@l;
Paul Mackerrasb85a0462005-10-06 10:59:19 +1000318
David Gibsone58c3492006-01-13 14:56:25 +1100319#define LOAD_REG_ADDR(reg,name) LOAD_REG_IMMEDIATE(reg, name)
320
Michael Neuling564aa5c2012-06-25 13:33:09 +0000321#define LOAD_REG_ADDRBASE(reg, name) lis reg,name@ha
David Gibsone58c3492006-01-13 14:56:25 +1100322#define ADDROFF(name) name@l
Paul Mackerrasb85a0462005-10-06 10:59:19 +1000323
Paul Mackerrasf78541dc2005-10-28 22:53:37 +1000324/* offsets for stack frame layout */
325#define LRSAVE 4
Paul Mackerrasb85a0462005-10-06 10:59:19 +1000326
Kumar Gala5f7c6902005-09-09 15:02:25 -0500327#endif
328
329/* various errata or part fixups */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330#ifdef CONFIG_PPC601_SYNC_FIX
331#define SYNC \
332BEGIN_FTR_SECTION \
333 sync; \
334 isync; \
335END_FTR_SECTION_IFSET(CPU_FTR_601)
336#define SYNC_601 \
337BEGIN_FTR_SECTION \
338 sync; \
339END_FTR_SECTION_IFSET(CPU_FTR_601)
340#define ISYNC_601 \
341BEGIN_FTR_SECTION \
342 isync; \
343END_FTR_SECTION_IFSET(CPU_FTR_601)
344#else
345#define SYNC
346#define SYNC_601
347#define ISYNC_601
348#endif
349
Benjamin Herrenschmidt859deea2006-10-20 14:37:05 +1000350#ifdef CONFIG_PPC_CELL
351#define MFTB(dest) \
35290: mftb dest; \
353BEGIN_FTR_SECTION_NESTED(96); \
354 cmpwi dest,0; \
355 beq- 90b; \
356END_FTR_SECTION_NESTED(CPU_FTR_CELL_TB_BUG, CPU_FTR_CELL_TB_BUG, 96)
357#else
358#define MFTB(dest) mftb dest
359#endif
Kumar Gala5f7c6902005-09-09 15:02:25 -0500360
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361#ifndef CONFIG_SMP
362#define TLBSYNC
363#else /* CONFIG_SMP */
364/* tlbsync is not implemented on 601 */
365#define TLBSYNC \
366BEGIN_FTR_SECTION \
367 tlbsync; \
368 sync; \
369END_FTR_SECTION_IFCLR(CPU_FTR_601)
370#endif
371
Anton Blanchard694caf02012-04-18 02:21:52 +0000372#ifdef CONFIG_PPC64
373#define MTOCRF(FXM, RS) \
374 BEGIN_FTR_SECTION_NESTED(848); \
375 mtcrf (FXM), (RS); \
376 FTR_SECTION_ELSE_NESTED(848); \
377 mtocrf (FXM), (RS); \
378 ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_NOEXECUTE, 848)
379#endif
380
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381/*
382 * This instruction is not implemented on the PPC 603 or 601; however, on
383 * the 403GCX and 405GP tlbia IS defined and tlbie is not.
384 * All of these instructions exist in the 8xx, they have magical powers,
385 * and they must be used.
386 */
387
388#if !defined(CONFIG_4xx) && !defined(CONFIG_8xx)
389#define tlbia \
390 li r4,1024; \
391 mtctr r4; \
392 lis r4,KERNELBASE@h; \
3930: tlbie r4; \
394 addi r4,r4,0x1000; \
395 bdnz 0b
396#endif
397
Kumar Gala5f7c6902005-09-09 15:02:25 -0500398
Kumar Gala5f7c6902005-09-09 15:02:25 -0500399#ifdef CONFIG_IBM440EP_ERR42
400#define PPC440EP_ERR42 isync
401#else
402#define PPC440EP_ERR42
403#endif
404
Benjamin Herrenschmidt44c58cc2009-07-23 23:15:20 +0000405/*
406 * toreal/fromreal/tophys/tovirt macros. 32-bit BookE makes them
407 * keep the address intact to be compatible with code shared with
408 * 32-bit classic.
409 *
410 * On the other hand, I find it useful to have them behave as expected
411 * by their name (ie always do the addition) on 64-bit BookE
412 */
413#if defined(CONFIG_BOOKE) && !defined(CONFIG_PPC64)
Paul Mackerras63162222005-10-27 22:44:39 +1000414#define toreal(rd)
415#define fromreal(rd)
416
Roland McGrath2ca76332008-05-11 10:40:47 +1000417/*
418 * We use addis to ensure compatibility with the "classic" ppc versions of
419 * these macros, which use rs = 0 to get the tophys offset in rd, rather than
420 * converting the address in r0, and so this version has to do that too
421 * (i.e. set register rd to 0 when rs == 0).
422 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423#define tophys(rd,rs) \
424 addis rd,rs,0
425
426#define tovirt(rd,rs) \
427 addis rd,rs,0
428
Kumar Gala5f7c6902005-09-09 15:02:25 -0500429#elif defined(CONFIG_PPC64)
Paul Mackerras63162222005-10-27 22:44:39 +1000430#define toreal(rd) /* we can access c000... in real mode */
431#define fromreal(rd)
432
Kumar Gala5f7c6902005-09-09 15:02:25 -0500433#define tophys(rd,rs) \
Paul Mackerras63162222005-10-27 22:44:39 +1000434 clrldi rd,rs,2
Kumar Gala5f7c6902005-09-09 15:02:25 -0500435
436#define tovirt(rd,rs) \
Paul Mackerras63162222005-10-27 22:44:39 +1000437 rotldi rd,rs,16; \
438 ori rd,rd,((KERNELBASE>>48)&0xFFFF);\
439 rotldi rd,rd,48
Kumar Gala5f7c6902005-09-09 15:02:25 -0500440#else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441/*
442 * On APUS (Amiga PowerPC cpu upgrade board), we don't know the
443 * physical base address of RAM at compile time.
444 */
Paul Mackerras63162222005-10-27 22:44:39 +1000445#define toreal(rd) tophys(rd,rd)
446#define fromreal(rd) tovirt(rd,rd)
447
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448#define tophys(rd,rs) \
Dale Farnsworthccdcef72008-12-17 10:09:13 +00004490: addis rd,rs,-PAGE_OFFSET@h; \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 .section ".vtop_fixup","aw"; \
451 .align 1; \
452 .long 0b; \
453 .previous
454
455#define tovirt(rd,rs) \
Dale Farnsworthccdcef72008-12-17 10:09:13 +00004560: addis rd,rs,PAGE_OFFSET@h; \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457 .section ".ptov_fixup","aw"; \
458 .align 1; \
459 .long 0b; \
460 .previous
Kumar Gala5f7c6902005-09-09 15:02:25 -0500461#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462
Benjamin Herrenschmidt44c58cc2009-07-23 23:15:20 +0000463#ifdef CONFIG_PPC_BOOK3S_64
Paul Mackerras40ef8cb2005-10-10 22:50:37 +1000464#define RFI rfid
465#define MTMSRD(r) mtmsrd r
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466#else
467#define FIX_SRR1(ra, rb)
468#ifndef CONFIG_40x
469#define RFI rfi
470#else
471#define RFI rfi; b . /* Prevent prefetch past rfi */
472#endif
473#define MTMSRD(r) mtmsr r
474#define CLR_TOP32(r)
Matt Porterc9cf73a2005-07-31 22:34:52 -0700475#endif
476
Arnd Bergmann88ced032005-12-16 22:43:46 +0100477#endif /* __KERNEL__ */
478
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479/* The boring bits... */
480
481/* Condition Register Bit Fields */
482
483#define cr0 0
484#define cr1 1
485#define cr2 2
486#define cr3 3
487#define cr4 4
488#define cr5 5
489#define cr6 6
490#define cr7 7
491
492
Michael Neuling9a13a522012-06-25 13:33:12 +0000493/*
494 * General Purpose Registers (GPRs)
495 *
496 * The lower case r0-r31 should be used in preference to the upper
497 * case R0-R31 as they provide more error checking in the assembler.
498 * Use R0-31 only when really nessesary.
499 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500
Michael Neuling9a13a522012-06-25 13:33:12 +0000501#define r0 %r0
502#define r1 %r1
503#define r2 %r2
504#define r3 %r3
505#define r4 %r4
506#define r5 %r5
507#define r6 %r6
508#define r7 %r7
509#define r8 %r8
510#define r9 %r9
511#define r10 %r10
512#define r11 %r11
513#define r12 %r12
514#define r13 %r13
515#define r14 %r14
516#define r15 %r15
517#define r16 %r16
518#define r17 %r17
519#define r18 %r18
520#define r19 %r19
521#define r20 %r20
522#define r21 %r21
523#define r22 %r22
524#define r23 %r23
525#define r24 %r24
526#define r25 %r25
527#define r26 %r26
528#define r27 %r27
529#define r28 %r28
530#define r29 %r29
531#define r30 %r30
532#define r31 %r31
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533
534
535/* Floating Point Registers (FPRs) */
536
537#define fr0 0
538#define fr1 1
539#define fr2 2
540#define fr3 3
541#define fr4 4
542#define fr5 5
543#define fr6 6
544#define fr7 7
545#define fr8 8
546#define fr9 9
547#define fr10 10
548#define fr11 11
549#define fr12 12
550#define fr13 13
551#define fr14 14
552#define fr15 15
553#define fr16 16
554#define fr17 17
555#define fr18 18
556#define fr19 19
557#define fr20 20
558#define fr21 21
559#define fr22 22
560#define fr23 23
561#define fr24 24
562#define fr25 25
563#define fr26 26
564#define fr27 27
565#define fr28 28
566#define fr29 29
567#define fr30 30
568#define fr31 31
569
Kumar Gala5f7c6902005-09-09 15:02:25 -0500570/* AltiVec Registers (VPRs) */
571
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572#define vr0 0
573#define vr1 1
574#define vr2 2
575#define vr3 3
576#define vr4 4
577#define vr5 5
578#define vr6 6
579#define vr7 7
580#define vr8 8
581#define vr9 9
582#define vr10 10
583#define vr11 11
584#define vr12 12
585#define vr13 13
586#define vr14 14
587#define vr15 15
588#define vr16 16
589#define vr17 17
590#define vr18 18
591#define vr19 19
592#define vr20 20
593#define vr21 21
594#define vr22 22
595#define vr23 23
596#define vr24 24
597#define vr25 25
598#define vr26 26
599#define vr27 27
600#define vr28 28
601#define vr29 29
602#define vr30 30
603#define vr31 31
604
Michael Neuling72ffff52008-06-25 14:07:18 +1000605/* VSX Registers (VSRs) */
606
607#define vsr0 0
608#define vsr1 1
609#define vsr2 2
610#define vsr3 3
611#define vsr4 4
612#define vsr5 5
613#define vsr6 6
614#define vsr7 7
615#define vsr8 8
616#define vsr9 9
617#define vsr10 10
618#define vsr11 11
619#define vsr12 12
620#define vsr13 13
621#define vsr14 14
622#define vsr15 15
623#define vsr16 16
624#define vsr17 17
625#define vsr18 18
626#define vsr19 19
627#define vsr20 20
628#define vsr21 21
629#define vsr22 22
630#define vsr23 23
631#define vsr24 24
632#define vsr25 25
633#define vsr26 26
634#define vsr27 27
635#define vsr28 28
636#define vsr29 29
637#define vsr30 30
638#define vsr31 31
639#define vsr32 32
640#define vsr33 33
641#define vsr34 34
642#define vsr35 35
643#define vsr36 36
644#define vsr37 37
645#define vsr38 38
646#define vsr39 39
647#define vsr40 40
648#define vsr41 41
649#define vsr42 42
650#define vsr43 43
651#define vsr44 44
652#define vsr45 45
653#define vsr46 46
654#define vsr47 47
655#define vsr48 48
656#define vsr49 49
657#define vsr50 50
658#define vsr51 51
659#define vsr52 52
660#define vsr53 53
661#define vsr54 54
662#define vsr55 55
663#define vsr56 56
664#define vsr57 57
665#define vsr58 58
666#define vsr59 59
667#define vsr60 60
668#define vsr61 61
669#define vsr62 62
670#define vsr63 63
671
Kumar Gala5f7c6902005-09-09 15:02:25 -0500672/* SPE Registers (EVPRs) */
673
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674#define evr0 0
675#define evr1 1
676#define evr2 2
677#define evr3 3
678#define evr4 4
679#define evr5 5
680#define evr6 6
681#define evr7 7
682#define evr8 8
683#define evr9 9
684#define evr10 10
685#define evr11 11
686#define evr12 12
687#define evr13 13
688#define evr14 14
689#define evr15 15
690#define evr16 16
691#define evr17 17
692#define evr18 18
693#define evr19 19
694#define evr20 20
695#define evr21 21
696#define evr22 22
697#define evr23 23
698#define evr24 24
699#define evr25 25
700#define evr26 26
701#define evr27 27
702#define evr28 28
703#define evr29 29
704#define evr30 30
705#define evr31 31
706
707/* some stab codes */
708#define N_FUN 36
709#define N_RSYM 64
710#define N_SLINE 68
711#define N_SO 100
Kumar Gala5f7c6902005-09-09 15:02:25 -0500712
Kumar Gala5f7c6902005-09-09 15:02:25 -0500713#endif /* __ASSEMBLY__ */
714
715#endif /* _ASM_POWERPC_PPC_ASM_H */