2 * Copyright (C) 1995-1999 Gary Thomas, Paul Mackerras, Cort Dougan.
4 #ifndef _ASM_POWERPC_PPC_ASM_H
5 #define _ASM_POWERPC_PPC_ASM_H
7 #include <linux/init.h>
8 #include <linux/stringify.h>
9 #include <asm/asm-compat.h>
10 #include <asm/processor.h>
11 #include <asm/ppc-opcode.h>
14 #error __FILE__ should only be used in assembler files
17 #define SZL (BITS_PER_LONG/8)
20 * Stuff for accurate CPU time accounting.
21 * These macros handle transitions between user and system state
22 * in exception entry and exit and accumulate time to the
23 * user_time and system_time fields in the paca.
26 #ifndef CONFIG_VIRT_CPU_ACCOUNTING
27 #define ACCOUNT_CPU_USER_ENTRY(ra, rb)
28 #define ACCOUNT_CPU_USER_EXIT(ra, rb)
30 #define ACCOUNT_CPU_USER_ENTRY(ra, rb) \
31 beq 2f; /* if from kernel mode */ \
33 mfspr ra,SPRN_PURR; /* get processor util. reg */ \
34 END_FTR_SECTION_IFSET(CPU_FTR_PURR); \
36 MFTB(ra); /* or get TB if no PURR */ \
37 END_FTR_SECTION_IFCLR(CPU_FTR_PURR); \
38 ld rb,PACA_STARTPURR(r13); \
39 std ra,PACA_STARTPURR(r13); \
40 subf rb,rb,ra; /* subtract start value */ \
41 ld ra,PACA_USER_TIME(r13); \
42 add ra,ra,rb; /* add on to user time */ \
43 std ra,PACA_USER_TIME(r13); \
46 #define ACCOUNT_CPU_USER_EXIT(ra, rb) \
48 mfspr ra,SPRN_PURR; /* get processor util. reg */ \
49 END_FTR_SECTION_IFSET(CPU_FTR_PURR); \
51 MFTB(ra); /* or get TB if no PURR */ \
52 END_FTR_SECTION_IFCLR(CPU_FTR_PURR); \
53 ld rb,PACA_STARTPURR(r13); \
54 std ra,PACA_STARTPURR(r13); \
55 subf rb,rb,ra; /* subtract start value */ \
56 ld ra,PACA_SYSTEM_TIME(r13); \
57 add ra,ra,rb; /* add on to user time */ \
58 std ra,PACA_SYSTEM_TIME(r13);
62 * Macros for storing registers into and loading registers from
66 #define SAVE_GPR(n, base) std n,GPR0+8*(n)(base)
67 #define REST_GPR(n, base) ld n,GPR0+8*(n)(base)
68 #define SAVE_NVGPRS(base) SAVE_8GPRS(14, base); SAVE_10GPRS(22, base)
69 #define REST_NVGPRS(base) REST_8GPRS(14, base); REST_10GPRS(22, base)
71 #define SAVE_GPR(n, base) stw n,GPR0+4*(n)(base)
72 #define REST_GPR(n, base) lwz n,GPR0+4*(n)(base)
73 #define SAVE_NVGPRS(base) SAVE_GPR(13, base); SAVE_8GPRS(14, base); \
75 #define REST_NVGPRS(base) REST_GPR(13, base); REST_8GPRS(14, base); \
79 #define SAVE_2GPRS(n, base) SAVE_GPR(n, base); SAVE_GPR(n+1, base)
80 #define SAVE_4GPRS(n, base) SAVE_2GPRS(n, base); SAVE_2GPRS(n+2, base)
81 #define SAVE_8GPRS(n, base) SAVE_4GPRS(n, base); SAVE_4GPRS(n+4, base)
82 #define SAVE_10GPRS(n, base) SAVE_8GPRS(n, base); SAVE_2GPRS(n+8, base)
83 #define REST_2GPRS(n, base) REST_GPR(n, base); REST_GPR(n+1, base)
84 #define REST_4GPRS(n, base) REST_2GPRS(n, base); REST_2GPRS(n+2, base)
85 #define REST_8GPRS(n, base) REST_4GPRS(n, base); REST_4GPRS(n+4, base)
86 #define REST_10GPRS(n, base) REST_8GPRS(n, base); REST_2GPRS(n+8, base)
88 #define SAVE_FPR(n, base) stfd n,THREAD_FPR0+8*TS_FPRWIDTH*(n)(base)
89 #define SAVE_2FPRS(n, base) SAVE_FPR(n, base); SAVE_FPR(n+1, base)
90 #define SAVE_4FPRS(n, base) SAVE_2FPRS(n, base); SAVE_2FPRS(n+2, base)
91 #define SAVE_8FPRS(n, base) SAVE_4FPRS(n, base); SAVE_4FPRS(n+4, base)
92 #define SAVE_16FPRS(n, base) SAVE_8FPRS(n, base); SAVE_8FPRS(n+8, base)
93 #define SAVE_32FPRS(n, base) SAVE_16FPRS(n, base); SAVE_16FPRS(n+16, base)
94 #define REST_FPR(n, base) lfd n,THREAD_FPR0+8*TS_FPRWIDTH*(n)(base)
95 #define REST_2FPRS(n, base) REST_FPR(n, base); REST_FPR(n+1, base)
96 #define REST_4FPRS(n, base) REST_2FPRS(n, base); REST_2FPRS(n+2, base)
97 #define REST_8FPRS(n, base) REST_4FPRS(n, base); REST_4FPRS(n+4, base)
98 #define REST_16FPRS(n, base) REST_8FPRS(n, base); REST_8FPRS(n+8, base)
99 #define REST_32FPRS(n, base) REST_16FPRS(n, base); REST_16FPRS(n+16, base)
101 #define SAVE_VR(n,b,base) li b,THREAD_VR0+(16*(n)); stvx n,b,base
102 #define SAVE_2VRS(n,b,base) SAVE_VR(n,b,base); SAVE_VR(n+1,b,base)
103 #define SAVE_4VRS(n,b,base) SAVE_2VRS(n,b,base); SAVE_2VRS(n+2,b,base)
104 #define SAVE_8VRS(n,b,base) SAVE_4VRS(n,b,base); SAVE_4VRS(n+4,b,base)
105 #define SAVE_16VRS(n,b,base) SAVE_8VRS(n,b,base); SAVE_8VRS(n+8,b,base)
106 #define SAVE_32VRS(n,b,base) SAVE_16VRS(n,b,base); SAVE_16VRS(n+16,b,base)
107 #define REST_VR(n,b,base) li b,THREAD_VR0+(16*(n)); lvx n,b,base
108 #define REST_2VRS(n,b,base) REST_VR(n,b,base); REST_VR(n+1,b,base)
109 #define REST_4VRS(n,b,base) REST_2VRS(n,b,base); REST_2VRS(n+2,b,base)
110 #define REST_8VRS(n,b,base) REST_4VRS(n,b,base); REST_4VRS(n+4,b,base)
111 #define REST_16VRS(n,b,base) REST_8VRS(n,b,base); REST_8VRS(n+8,b,base)
112 #define REST_32VRS(n,b,base) REST_16VRS(n,b,base); REST_16VRS(n+16,b,base)
114 /* Save the lower 32 VSRs in the thread VSR region */
115 #define SAVE_VSR(n,b,base) li b,THREAD_VSR0+(16*(n)); STXVD2X(n,b,base)
116 #define SAVE_2VSRS(n,b,base) SAVE_VSR(n,b,base); SAVE_VSR(n+1,b,base)
117 #define SAVE_4VSRS(n,b,base) SAVE_2VSRS(n,b,base); SAVE_2VSRS(n+2,b,base)
118 #define SAVE_8VSRS(n,b,base) SAVE_4VSRS(n,b,base); SAVE_4VSRS(n+4,b,base)
119 #define SAVE_16VSRS(n,b,base) SAVE_8VSRS(n,b,base); SAVE_8VSRS(n+8,b,base)
120 #define SAVE_32VSRS(n,b,base) SAVE_16VSRS(n,b,base); SAVE_16VSRS(n+16,b,base)
121 #define REST_VSR(n,b,base) li b,THREAD_VSR0+(16*(n)); LXVD2X(n,b,base)
122 #define REST_2VSRS(n,b,base) REST_VSR(n,b,base); REST_VSR(n+1,b,base)
123 #define REST_4VSRS(n,b,base) REST_2VSRS(n,b,base); REST_2VSRS(n+2,b,base)
124 #define REST_8VSRS(n,b,base) REST_4VSRS(n,b,base); REST_4VSRS(n+4,b,base)
125 #define REST_16VSRS(n,b,base) REST_8VSRS(n,b,base); REST_8VSRS(n+8,b,base)
126 #define REST_32VSRS(n,b,base) REST_16VSRS(n,b,base); REST_16VSRS(n+16,b,base)
127 /* Save the upper 32 VSRs (32-63) in the thread VSX region (0-31) */
128 #define SAVE_VSRU(n,b,base) li b,THREAD_VR0+(16*(n)); STXVD2X(n+32,b,base)
129 #define SAVE_2VSRSU(n,b,base) SAVE_VSRU(n,b,base); SAVE_VSRU(n+1,b,base)
130 #define SAVE_4VSRSU(n,b,base) SAVE_2VSRSU(n,b,base); SAVE_2VSRSU(n+2,b,base)
131 #define SAVE_8VSRSU(n,b,base) SAVE_4VSRSU(n,b,base); SAVE_4VSRSU(n+4,b,base)
132 #define SAVE_16VSRSU(n,b,base) SAVE_8VSRSU(n,b,base); SAVE_8VSRSU(n+8,b,base)
133 #define SAVE_32VSRSU(n,b,base) SAVE_16VSRSU(n,b,base); SAVE_16VSRSU(n+16,b,base)
134 #define REST_VSRU(n,b,base) li b,THREAD_VR0+(16*(n)); LXVD2X(n+32,b,base)
135 #define REST_2VSRSU(n,b,base) REST_VSRU(n,b,base); REST_VSRU(n+1,b,base)
136 #define REST_4VSRSU(n,b,base) REST_2VSRSU(n,b,base); REST_2VSRSU(n+2,b,base)
137 #define REST_8VSRSU(n,b,base) REST_4VSRSU(n,b,base); REST_4VSRSU(n+4,b,base)
138 #define REST_16VSRSU(n,b,base) REST_8VSRSU(n,b,base); REST_8VSRSU(n+8,b,base)
139 #define REST_32VSRSU(n,b,base) REST_16VSRSU(n,b,base); REST_16VSRSU(n+16,b,base)
141 #define SAVE_EVR(n,s,base) evmergehi s,s,n; stw s,THREAD_EVR0+4*(n)(base)
142 #define SAVE_2EVRS(n,s,base) SAVE_EVR(n,s,base); SAVE_EVR(n+1,s,base)
143 #define SAVE_4EVRS(n,s,base) SAVE_2EVRS(n,s,base); SAVE_2EVRS(n+2,s,base)
144 #define SAVE_8EVRS(n,s,base) SAVE_4EVRS(n,s,base); SAVE_4EVRS(n+4,s,base)
145 #define SAVE_16EVRS(n,s,base) SAVE_8EVRS(n,s,base); SAVE_8EVRS(n+8,s,base)
146 #define SAVE_32EVRS(n,s,base) SAVE_16EVRS(n,s,base); SAVE_16EVRS(n+16,s,base)
147 #define REST_EVR(n,s,base) lwz s,THREAD_EVR0+4*(n)(base); evmergelo n,s,n
148 #define REST_2EVRS(n,s,base) REST_EVR(n,s,base); REST_EVR(n+1,s,base)
149 #define REST_4EVRS(n,s,base) REST_2EVRS(n,s,base); REST_2EVRS(n+2,s,base)
150 #define REST_8EVRS(n,s,base) REST_4EVRS(n,s,base); REST_4EVRS(n+4,s,base)
151 #define REST_16EVRS(n,s,base) REST_8EVRS(n,s,base); REST_8EVRS(n+8,s,base)
152 #define REST_32EVRS(n,s,base) REST_16EVRS(n,s,base); REST_16EVRS(n+16,s,base)
154 /* Macros to adjust thread priority for hardware multithreading */
155 #define HMT_VERY_LOW or 31,31,31 # very low priority
156 #define HMT_LOW or 1,1,1
157 #define HMT_MEDIUM_LOW or 6,6,6 # medium low priority
158 #define HMT_MEDIUM or 2,2,2
159 #define HMT_MEDIUM_HIGH or 5,5,5 # medium high priority
160 #define HMT_HIGH or 3,3,3
165 #define XGLUE(a,b) a##b
166 #define GLUE(a,b) XGLUE(a,b)
168 #define _GLOBAL(name) \
172 .globl GLUE(.,name); \
173 .section ".opd","aw"; \
175 .quad GLUE(.,name); \
176 .quad .TOC.@tocbase; \
179 .type GLUE(.,name),@function; \
182 #define _INIT_GLOBAL(name) \
186 .globl GLUE(.,name); \
187 .section ".opd","aw"; \
189 .quad GLUE(.,name); \
190 .quad .TOC.@tocbase; \
193 .type GLUE(.,name),@function; \
196 #define _KPROBE(name) \
197 .section ".kprobes.text","a"; \
200 .globl GLUE(.,name); \
201 .section ".opd","aw"; \
203 .quad GLUE(.,name); \
204 .quad .TOC.@tocbase; \
207 .type GLUE(.,name),@function; \
210 #define _STATIC(name) \
213 .section ".opd","aw"; \
215 .quad GLUE(.,name); \
216 .quad .TOC.@tocbase; \
219 .type GLUE(.,name),@function; \
222 #define _INIT_STATIC(name) \
225 .section ".opd","aw"; \
227 .quad GLUE(.,name); \
228 .quad .TOC.@tocbase; \
231 .type GLUE(.,name),@function; \
242 .stabs __stringify(n:F-1),N_FUN,0,0,n;\
247 .section ".kprobes.text","a"; \
254 * LOAD_REG_IMMEDIATE(rn, expr)
255 * Loads the value of the constant expression 'expr' into register 'rn'
256 * using immediate instructions only. Use this when it's important not
257 * to reference other data (i.e. on ppc64 when the TOC pointer is not
258 * valid) and when 'expr' is a constant or absolute address.
260 * LOAD_REG_ADDR(rn, name)
261 * Loads the address of label 'name' into register 'rn'. Use this when
262 * you don't particularly need immediate instructions only, but you need
263 * the whole address in one register (e.g. it's a structure address and
264 * you want to access various offsets within it). On ppc32 this is
265 * identical to LOAD_REG_IMMEDIATE.
267 * LOAD_REG_ADDRBASE(rn, name)
269 * LOAD_REG_ADDRBASE loads part of the address of label 'name' into
270 * register 'rn'. ADDROFF(name) returns the remainder of the address as
271 * a constant expression. ADDROFF(name) is a signed expression < 16 bits
272 * in size, so is suitable for use directly as an offset in load and store
273 * instructions. Use this when loading/storing a single word or less as:
274 * LOAD_REG_ADDRBASE(rX, name)
275 * ld rY,ADDROFF(name)(rX)
278 #define LOAD_REG_IMMEDIATE(reg,expr) \
279 lis (reg),(expr)@highest; \
280 ori (reg),(reg),(expr)@higher; \
281 rldicr (reg),(reg),32,31; \
282 oris (reg),(reg),(expr)@h; \
283 ori (reg),(reg),(expr)@l;
285 #define LOAD_REG_ADDR(reg,name) \
286 ld (reg),name@got(r2)
288 #define LOAD_REG_ADDRBASE(reg,name) LOAD_REG_ADDR(reg,name)
289 #define ADDROFF(name) 0
291 /* offsets for stack frame layout */
296 #define LOAD_REG_IMMEDIATE(reg,expr) \
297 lis (reg),(expr)@ha; \
298 addi (reg),(reg),(expr)@l;
300 #define LOAD_REG_ADDR(reg,name) LOAD_REG_IMMEDIATE(reg, name)
302 #define LOAD_REG_ADDRBASE(reg, name) lis (reg),name@ha
303 #define ADDROFF(name) name@l
305 /* offsets for stack frame layout */
310 /* various errata or part fixups */
311 #ifdef CONFIG_PPC601_SYNC_FIX
316 END_FTR_SECTION_IFSET(CPU_FTR_601)
320 END_FTR_SECTION_IFSET(CPU_FTR_601)
324 END_FTR_SECTION_IFSET(CPU_FTR_601)
331 #ifdef CONFIG_PPC_CELL
334 BEGIN_FTR_SECTION_NESTED(96); \
337 END_FTR_SECTION_NESTED(CPU_FTR_CELL_TB_BUG, CPU_FTR_CELL_TB_BUG, 96)
339 #define MFTB(dest) mftb dest
344 #else /* CONFIG_SMP */
345 /* tlbsync is not implemented on 601 */
350 END_FTR_SECTION_IFCLR(CPU_FTR_601)
355 * This instruction is not implemented on the PPC 603 or 601; however, on
356 * the 403GCX and 405GP tlbia IS defined and tlbie is not.
357 * All of these instructions exist in the 8xx, they have magical powers,
358 * and they must be used.
361 #if !defined(CONFIG_4xx) && !defined(CONFIG_8xx)
365 lis r4,KERNELBASE@h; \
372 #ifdef CONFIG_IBM440EP_ERR42
373 #define PPC440EP_ERR42 isync
375 #define PPC440EP_ERR42
379 #if defined(CONFIG_BOOKE)
384 * We use addis to ensure compatibility with the "classic" ppc versions of
385 * these macros, which use rs = 0 to get the tophys offset in rd, rather than
386 * converting the address in r0, and so this version has to do that too
387 * (i.e. set register rd to 0 when rs == 0).
389 #define tophys(rd,rs) \
392 #define tovirt(rd,rs) \
395 #elif defined(CONFIG_PPC64)
396 #define toreal(rd) /* we can access c000... in real mode */
399 #define tophys(rd,rs) \
402 #define tovirt(rd,rs) \
404 ori rd,rd,((KERNELBASE>>48)&0xFFFF);\
408 * On APUS (Amiga PowerPC cpu upgrade board), we don't know the
409 * physical base address of RAM at compile time.
411 #define toreal(rd) tophys(rd,rd)
412 #define fromreal(rd) tovirt(rd,rd)
414 #define tophys(rd,rs) \
415 0: addis rd,rs,-PAGE_OFFSET@h; \
416 .section ".vtop_fixup","aw"; \
421 #define tovirt(rd,rs) \
422 0: addis rd,rs,PAGE_OFFSET@h; \
423 .section ".ptov_fixup","aw"; \
431 #define MTMSRD(r) mtmsrd r
434 #define FIX_SRR1(ra, rb)
438 #define RFI rfi; b . /* Prevent prefetch past rfi */
440 #define MTMSRD(r) mtmsr r
444 #endif /* __KERNEL__ */
446 /* The boring bits... */
448 /* Condition Register Bit Fields */
460 /* General Purpose Registers (GPRs) */
496 /* Floating Point Registers (FPRs) */
531 /* AltiVec Registers (VPRs) */
566 /* VSX Registers (VSRs) */
633 /* SPE Registers (EVPRs) */
668 /* some stab codes */
674 #endif /* __ASSEMBLY__ */
676 #endif /* _ASM_POWERPC_PPC_ASM_H */