projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 | 1 | /* |
| 1da177e4 | 2 | * Copyright (C) 1995-1999 Gary Thomas, Paul Mackerras, Cort Dougan. |
| 1da177e4 | 3 | */ |
| 5f7c6907 KG |
4 | #ifndef _ASM_POWERPC_PPC_ASM_H |
| 5 | #define _ASM_POWERPC_PPC_ASM_H | |
| 6 | ||
| 40ef8cbc | 7 | #include <linux/stringify.h> |
| 3ddfbcf1 | 8 | #include <asm/asm-compat.h> |
| 9c75a31c | 9 | #include <asm/processor.h> |
| 16c57b36 | 10 | #include <asm/ppc-opcode.h> |
| cf9efce0 | 11 | #include <asm/firmware.h> |
| 40ef8cbc | 12 | |
| e3f2c6c3 | 13 | #ifdef __ASSEMBLY__ |
| 3ddfbcf1 DG |
14 | |
| 15 | #define SZL (BITS_PER_LONG/8) | |
| 1da177e4 | 16 | |
| c6622f63 PM |
17 | /* |
| 18 | * Stuff for accurate CPU time accounting. | |
| 19 | * These macros handle transitions between user and system state | |
| 20 | * in exception entry and exit and accumulate time to the | |
| 21 | * user_time and system_time fields in the paca. | |
| 22 | */ | |
| 23 | ||
| abf917cd | 24 | #ifndef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE |
| c223c903 CL |
25 | #define ACCOUNT_CPU_USER_ENTRY(ptr, ra, rb) |
| 26 | #define ACCOUNT_CPU_USER_EXIT(ptr, ra, rb) | |
| cf9efce0 | 27 | #define ACCOUNT_STOLEN_TIME |
| c6622f63 | 28 | #else |
| c223c903 | 29 | #define ACCOUNT_CPU_USER_ENTRY(ptr, ra, rb) \ |
| cf9efce0 | 30 | MFTB(ra); /* get timebase */ \ |
| c223c903 CL |
31 | PPC_LL rb, ACCOUNT_STARTTIME_USER(ptr); \ |
| 32 | PPC_STL ra, ACCOUNT_STARTTIME(ptr); \ | |
| c6622f63 | 33 | subf rb,rb,ra; /* subtract start value */ \ |
| c223c903 | 34 | PPC_LL ra, ACCOUNT_USER_TIME(ptr); \ |
| c6622f63 | 35 | add ra,ra,rb; /* add on to user time */ \ |
| c223c903 | 36 | PPC_STL ra, ACCOUNT_USER_TIME(ptr); \ |
| c6622f63 | 37 | |
| c223c903 | 38 | #define ACCOUNT_CPU_USER_EXIT(ptr, ra, rb) \ |
| cf9efce0 | 39 | MFTB(ra); /* get timebase */ \ |
| c223c903 CL |
40 | PPC_LL rb, ACCOUNT_STARTTIME(ptr); \ |
| 41 | PPC_STL ra, ACCOUNT_STARTTIME_USER(ptr); \ | |
| c6622f63 | 42 | subf rb,rb,ra; /* subtract start value */ \ |
| c223c903 | 43 | PPC_LL ra, ACCOUNT_SYSTEM_TIME(ptr); \ |
| cf9efce0 | 44 | add ra,ra,rb; /* add on to system time */ \ |
| c223c903 | 45 | PPC_STL ra, ACCOUNT_SYSTEM_TIME(ptr) |
| cf9efce0 PM |
46 | |
| 47 | #ifdef CONFIG_PPC_SPLPAR | |
| 48 | #define ACCOUNT_STOLEN_TIME \ | |
| 49 | BEGIN_FW_FTR_SECTION; \ | |
| 50 | beq 33f; \ | |
| 51 | /* from user - see if there are any DTL entries to process */ \ | |
| 52 | ld r10,PACALPPACAPTR(r13); /* get ptr to VPA */ \ | |
| 53 | ld r11,PACA_DTL_RIDX(r13); /* get log read index */ \ | |
| 7ffcf8ec AB |
54 | addi r10,r10,LPPACA_DTLIDX; \ |
| 55 | LDX_BE r10,0,r10; /* get log write index */ \ | |
| cf9efce0 PM |
56 | cmpd cr1,r11,r10; \ |
| 57 | beq+ cr1,33f; \ | |
| b1576fec | 58 | bl accumulate_stolen_time; \ |
| 990118c8 BH |
59 | ld r12,_MSR(r1); \ |
| 60 | andi. r10,r12,MSR_PR; /* Restore cr0 (coming from user) */ \ | |
| cf9efce0 PM |
61 | 33: \ |
| 62 | END_FW_FTR_SECTION_IFSET(FW_FEATURE_SPLPAR) | |
| 63 | ||
| 64 | #else /* CONFIG_PPC_SPLPAR */ | |
| 65 | #define ACCOUNT_STOLEN_TIME | |
| 66 | ||
| 67 | #endif /* CONFIG_PPC_SPLPAR */ | |
| 68 | ||
| abf917cd | 69 | #endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */ |
| c6622f63 | 70 | |
| 1da177e4 LT |
71 | /* |
| 72 | * Macros for storing registers into and loading registers from | |
| 73 | * exception frames. | |
| 74 | */ | |
| 5f7c6907 KG |
75 | #ifdef __powerpc64__ |
| 76 | #define SAVE_GPR(n, base) std n,GPR0+8*(n)(base) | |
| 77 | #define REST_GPR(n, base) ld n,GPR0+8*(n)(base) | |
| 78 | #define SAVE_NVGPRS(base) SAVE_8GPRS(14, base); SAVE_10GPRS(22, base) | |
| 79 | #define REST_NVGPRS(base) REST_8GPRS(14, base); REST_10GPRS(22, base) | |
| 80 | #else | |
| 1da177e4 | 81 | #define SAVE_GPR(n, base) stw n,GPR0+4*(n)(base) |
| 5f7c6907 KG |
82 | #define REST_GPR(n, base) lwz n,GPR0+4*(n)(base) |
| 83 | #define SAVE_NVGPRS(base) SAVE_GPR(13, base); SAVE_8GPRS(14, base); \ | |
| 84 | SAVE_10GPRS(22, base) | |
| 85 | #define REST_NVGPRS(base) REST_GPR(13, base); REST_8GPRS(14, base); \ | |
| 86 | REST_10GPRS(22, base) | |
| 87 | #endif | |
| 88 | ||
| 1da177e4 LT |
89 | #define SAVE_2GPRS(n, base) SAVE_GPR(n, base); SAVE_GPR(n+1, base) |
| 90 | #define SAVE_4GPRS(n, base) SAVE_2GPRS(n, base); SAVE_2GPRS(n+2, base) | |
| 91 | #define SAVE_8GPRS(n, base) SAVE_4GPRS(n, base); SAVE_4GPRS(n+4, base) | |
| 92 | #define SAVE_10GPRS(n, base) SAVE_8GPRS(n, base); SAVE_2GPRS(n+8, base) | |
| 1da177e4 LT |
93 | #define REST_2GPRS(n, base) REST_GPR(n, base); REST_GPR(n+1, base) |
| 94 | #define REST_4GPRS(n, base) REST_2GPRS(n, base); REST_2GPRS(n+2, base) | |
| 95 | #define REST_8GPRS(n, base) REST_4GPRS(n, base); REST_4GPRS(n+4, base) | |
| 96 | #define REST_10GPRS(n, base) REST_8GPRS(n, base); REST_2GPRS(n+8, base) | |
| 97 | ||
| de79f7b9 | 98 | #define SAVE_FPR(n, base) stfd n,8*TS_FPRWIDTH*(n)(base) |
| 1da177e4 LT |
99 | #define SAVE_2FPRS(n, base) SAVE_FPR(n, base); SAVE_FPR(n+1, base) |
| 100 | #define SAVE_4FPRS(n, base) SAVE_2FPRS(n, base); SAVE_2FPRS(n+2, base) | |
| 101 | #define SAVE_8FPRS(n, base) SAVE_4FPRS(n, base); SAVE_4FPRS(n+4, base) | |
| 102 | #define SAVE_16FPRS(n, base) SAVE_8FPRS(n, base); SAVE_8FPRS(n+8, base) | |
| 103 | #define SAVE_32FPRS(n, base) SAVE_16FPRS(n, base); SAVE_16FPRS(n+16, base) | |
| de79f7b9 | 104 | #define REST_FPR(n, base) lfd n,8*TS_FPRWIDTH*(n)(base) |
| 1da177e4 LT |
105 | #define REST_2FPRS(n, base) REST_FPR(n, base); REST_FPR(n+1, base) |
| 106 | #define REST_4FPRS(n, base) REST_2FPRS(n, base); REST_2FPRS(n+2, base) | |
| 107 | #define REST_8FPRS(n, base) REST_4FPRS(n, base); REST_4FPRS(n+4, base) | |
| 108 | #define REST_16FPRS(n, base) REST_8FPRS(n, base); REST_8FPRS(n+8, base) | |
| 109 | #define REST_32FPRS(n, base) REST_16FPRS(n, base); REST_16FPRS(n+16, base) | |
| 110 | ||
| de79f7b9 | 111 | #define SAVE_VR(n,b,base) li b,16*(n); stvx n,base,b |
| 5f7c6907 KG |
112 | #define SAVE_2VRS(n,b,base) SAVE_VR(n,b,base); SAVE_VR(n+1,b,base) |
| 113 | #define SAVE_4VRS(n,b,base) SAVE_2VRS(n,b,base); SAVE_2VRS(n+2,b,base) | |
| 114 | #define SAVE_8VRS(n,b,base) SAVE_4VRS(n,b,base); SAVE_4VRS(n+4,b,base) | |
| 115 | #define SAVE_16VRS(n,b,base) SAVE_8VRS(n,b,base); SAVE_8VRS(n+8,b,base) | |
| 116 | #define SAVE_32VRS(n,b,base) SAVE_16VRS(n,b,base); SAVE_16VRS(n+16,b,base) | |
| de79f7b9 | 117 | #define REST_VR(n,b,base) li b,16*(n); lvx n,base,b |
| 5f7c6907 KG |
118 | #define REST_2VRS(n,b,base) REST_VR(n,b,base); REST_VR(n+1,b,base) |
| 119 | #define REST_4VRS(n,b,base) REST_2VRS(n,b,base); REST_2VRS(n+2,b,base) | |
| 120 | #define REST_8VRS(n,b,base) REST_4VRS(n,b,base); REST_4VRS(n+4,b,base) | |
| 121 | #define REST_16VRS(n,b,base) REST_8VRS(n,b,base); REST_8VRS(n+8,b,base) | |
| 122 | #define REST_32VRS(n,b,base) REST_16VRS(n,b,base); REST_16VRS(n+16,b,base) | |
| 1da177e4 | 123 | |
| 926f160f AB |
124 | #ifdef __BIG_ENDIAN__ |
| 125 | #define STXVD2X_ROT(n,b,base) STXVD2X(n,b,base) | |
| 126 | #define LXVD2X_ROT(n,b,base) LXVD2X(n,b,base) | |
| 127 | #else | |
| 128 | #define STXVD2X_ROT(n,b,base) XXSWAPD(n,n); \ | |
| 129 | STXVD2X(n,b,base); \ | |
| 130 | XXSWAPD(n,n) | |
| 131 | ||
| 132 | #define LXVD2X_ROT(n,b,base) LXVD2X(n,b,base); \ | |
| 133 | XXSWAPD(n,n) | |
| 134 | #endif | |
| 72ffff5b | 135 | /* Save the lower 32 VSRs in the thread VSR region */ |
| 3ad26e5c | 136 | #define SAVE_VSR(n,b,base) li b,16*(n); STXVD2X_ROT(n,R##base,R##b) |
| 72ffff5b MN |
137 | #define SAVE_2VSRS(n,b,base) SAVE_VSR(n,b,base); SAVE_VSR(n+1,b,base) |
| 138 | #define SAVE_4VSRS(n,b,base) SAVE_2VSRS(n,b,base); SAVE_2VSRS(n+2,b,base) | |
| 139 | #define SAVE_8VSRS(n,b,base) SAVE_4VSRS(n,b,base); SAVE_4VSRS(n+4,b,base) | |
| 140 | #define SAVE_16VSRS(n,b,base) SAVE_8VSRS(n,b,base); SAVE_8VSRS(n+8,b,base) | |
| 141 | #define SAVE_32VSRS(n,b,base) SAVE_16VSRS(n,b,base); SAVE_16VSRS(n+16,b,base) | |
| 3ad26e5c | 142 | #define REST_VSR(n,b,base) li b,16*(n); LXVD2X_ROT(n,R##base,R##b) |
| 72ffff5b MN |
143 | #define REST_2VSRS(n,b,base) REST_VSR(n,b,base); REST_VSR(n+1,b,base) |
| 144 | #define REST_4VSRS(n,b,base) REST_2VSRS(n,b,base); REST_2VSRS(n+2,b,base) | |
| 145 | #define REST_8VSRS(n,b,base) REST_4VSRS(n,b,base); REST_4VSRS(n+4,b,base) | |
| 146 | #define REST_16VSRS(n,b,base) REST_8VSRS(n,b,base); REST_8VSRS(n+8,b,base) | |
| 147 | #define REST_32VSRS(n,b,base) REST_16VSRS(n,b,base); REST_16VSRS(n+16,b,base) | |
| 72ffff5b | 148 | |
| c51584d5 SW |
149 | /* |
| 150 | * b = base register for addressing, o = base offset from register of 1st EVR | |
| 151 | * n = first EVR, s = scratch | |
| 152 | */ | |
| 153 | #define SAVE_EVR(n,s,b,o) evmergehi s,s,n; stw s,o+4*(n)(b) | |
| 154 | #define SAVE_2EVRS(n,s,b,o) SAVE_EVR(n,s,b,o); SAVE_EVR(n+1,s,b,o) | |
| 155 | #define SAVE_4EVRS(n,s,b,o) SAVE_2EVRS(n,s,b,o); SAVE_2EVRS(n+2,s,b,o) | |
| 156 | #define SAVE_8EVRS(n,s,b,o) SAVE_4EVRS(n,s,b,o); SAVE_4EVRS(n+4,s,b,o) | |
| 157 | #define SAVE_16EVRS(n,s,b,o) SAVE_8EVRS(n,s,b,o); SAVE_8EVRS(n+8,s,b,o) | |
| 158 | #define SAVE_32EVRS(n,s,b,o) SAVE_16EVRS(n,s,b,o); SAVE_16EVRS(n+16,s,b,o) | |
| 159 | #define REST_EVR(n,s,b,o) lwz s,o+4*(n)(b); evmergelo n,s,n | |
| 160 | #define REST_2EVRS(n,s,b,o) REST_EVR(n,s,b,o); REST_EVR(n+1,s,b,o) | |
| 161 | #define REST_4EVRS(n,s,b,o) REST_2EVRS(n,s,b,o); REST_2EVRS(n+2,s,b,o) | |
| 162 | #define REST_8EVRS(n,s,b,o) REST_4EVRS(n,s,b,o); REST_4EVRS(n+4,s,b,o) | |
| 163 | #define REST_16EVRS(n,s,b,o) REST_8EVRS(n,s,b,o); REST_8EVRS(n+8,s,b,o) | |
| 164 | #define REST_32EVRS(n,s,b,o) REST_16EVRS(n,s,b,o); REST_16EVRS(n+16,s,b,o) | |
| 5f7c6907 | 165 | |
| 8c71632f ME |
166 | /* Macros to adjust thread priority for hardware multithreading */ |
| 167 | #define HMT_VERY_LOW or 31,31,31 # very low priority | |
| 168 | #define HMT_LOW or 1,1,1 | |
| 169 | #define HMT_MEDIUM_LOW or 6,6,6 # medium low priority | |
| 170 | #define HMT_MEDIUM or 2,2,2 | |
| 171 | #define HMT_MEDIUM_HIGH or 5,5,5 # medium high priority | |
| 172 | #define HMT_HIGH or 3,3,3 | |
| 50fb8ebe | 173 | #define HMT_EXTRA_HIGH or 7,7,7 # power7 only |
| 5f7c6907 | 174 | |
| d72be892 MN |
175 | #ifdef CONFIG_PPC64 |
| 176 | #define ULONG_SIZE 8 | |
| 177 | #else | |
| 178 | #define ULONG_SIZE 4 | |
| 179 | #endif | |
| 0b7673c3 MN |
180 | #define __VCPU_GPR(n) (VCPU_GPRS + (n * ULONG_SIZE)) |
| 181 | #define VCPU_GPR(n) __VCPU_GPR(__REG_##n) | |
| d72be892 | 182 | |
| 88ced031 | 183 | #ifdef __KERNEL__ |
| 40ef8cbc PM |
184 | #ifdef CONFIG_PPC64 |
| 185 | ||
| 44ce6a5e | 186 | #define STACKFRAMESIZE 256 |
| 0b7673c3 MN |
187 | #define __STK_REG(i) (112 + ((i)-14)*8) |
| 188 | #define STK_REG(i) __STK_REG(__REG_##i) | |
| 44ce6a5e | 189 | |
| f55d9665 | 190 | #ifdef PPC64_ELF_ABI_v2 |
| 6403105b | 191 | #define STK_GOT 24 |
| b37c10d1 AB |
192 | #define __STK_PARAM(i) (32 + ((i)-3)*8) |
| 193 | #else | |
| 6403105b | 194 | #define STK_GOT 40 |
| 0b7673c3 | 195 | #define __STK_PARAM(i) (48 + ((i)-3)*8) |
| b37c10d1 | 196 | #endif |
| 0b7673c3 | 197 | #define STK_PARAM(i) __STK_PARAM(__REG_##i) |
| 44ce6a5e | 198 | |
| f55d9665 | 199 | #ifdef PPC64_ELF_ABI_v2 |
| 7167af7c AB |
200 | |
| 201 | #define _GLOBAL(name) \ | |
| 7167af7c AB |
202 | .align 2 ; \ |
| 203 | .type name,@function; \ | |
| 204 | .globl name; \ | |
| 205 | name: | |
| 206 | ||
| 169c7cee | 207 | #define _GLOBAL_TOC(name) \ |
| 169c7cee AB |
208 | .align 2 ; \ |
| 209 | .type name,@function; \ | |
| 210 | .globl name; \ | |
| 211 | name: \ | |
| 212 | 0: addis r2,r12,(.TOC.-0b)@ha; \ | |
| 213 | addi r2,r2,(.TOC.-0b)@l; \ | |
| 214 | .localentry name,.-name | |
| 215 | ||
| 7167af7c AB |
216 | #define DOTSYM(a) a |
| 217 | ||
| 218 | #else | |
| 219 | ||
| 40ef8cbc PM |
220 | #define XGLUE(a,b) a##b |
| 221 | #define GLUE(a,b) XGLUE(a,b) | |
| 222 | ||
| 223 | #define _GLOBAL(name) \ | |
| 40ef8cbc PM |
224 | .align 2 ; \ |
| 225 | .globl name; \ | |
| 226 | .globl GLUE(.,name); \ | |
| bea2dccc | 227 | .pushsection ".opd","aw"; \ |
| 40ef8cbc PM |
228 | name: \ |
| 229 | .quad GLUE(.,name); \ | |
| 230 | .quad .TOC.@tocbase; \ | |
| 231 | .quad 0; \ | |
| bea2dccc | 232 | .popsection; \ |
| 40ef8cbc PM |
233 | .type GLUE(.,name),@function; \ |
| 234 | GLUE(.,name): | |
| 235 | ||
| 169c7cee AB |
236 | #define _GLOBAL_TOC(name) _GLOBAL(name) |
| 237 | ||
| c1fb0194 AB |
238 | #define DOTSYM(a) GLUE(.,a) |
| 239 | ||
| 7167af7c AB |
240 | #endif |
| 241 | ||
| 40ef8cbc PM |
242 | #else /* 32-bit */ |
| 243 | ||
| 748a7683 KG |
244 | #define _ENTRY(n) \ |
| 245 | .globl n; \ | |
| 246 | n: | |
| 247 | ||
| 40ef8cbc | 248 | #define _GLOBAL(n) \ |
| 40ef8cbc PM |
249 | .stabs __stringify(n:F-1),N_FUN,0,0,n;\ |
| 250 | .globl n; \ | |
| 251 | n: | |
| 252 | ||
| 9715a2e8 AG |
253 | #define _GLOBAL_TOC(name) _GLOBAL(name) |
| 254 | ||
| 40ef8cbc PM |
255 | #endif |
| 256 | ||
| 6f698df1 NP |
257 | /* |
| 258 | * __kprobes (the C annotation) puts the symbol into the .kprobes.text | |
| 259 | * section, which gets emitted at the end of regular text. | |
| 260 | * | |
| 261 | * _ASM_NOKPROBE_SYMBOL and NOKPROBE_SYMBOL just adds the symbol to | |
| 262 | * a blacklist. The former is for core kprobe functions/data, the | |
| 263 | * latter is for those that incdentially must be excluded from probing | |
| 264 | * and allows them to be linked at more optimal location within text. | |
| 265 | */ | |
| c0a51491 | 266 | #ifdef CONFIG_KPROBES |
| 6f698df1 NP |
267 | #define _ASM_NOKPROBE_SYMBOL(entry) \ |
| 268 | .pushsection "_kprobe_blacklist","aw"; \ | |
| 269 | PPC_LONG (entry) ; \ | |
| 270 | .popsection | |
| c0a51491 NP |
271 | #else |
| 272 | #define _ASM_NOKPROBE_SYMBOL(entry) | |
| 273 | #endif | |
| 6f698df1 | 274 | |
| 151f2511 AB |
275 | #define FUNC_START(name) _GLOBAL(name) |
| 276 | #define FUNC_END(name) | |
| 277 | ||
| 5f7c6907 | 278 | /* |
| e58c3495 DG |
279 | * LOAD_REG_IMMEDIATE(rn, expr) |
| 280 | * Loads the value of the constant expression 'expr' into register 'rn' | |
| 281 | * using immediate instructions only. Use this when it's important not | |
| 282 | * to reference other data (i.e. on ppc64 when the TOC pointer is not | |
| e31aa453 | 283 | * valid) and when 'expr' is a constant or absolute address. |
| 5f7c6907 | 284 | * |
| e58c3495 DG |
285 | * LOAD_REG_ADDR(rn, name) |
| 286 | * Loads the address of label 'name' into register 'rn'. Use this when | |
| 287 | * you don't particularly need immediate instructions only, but you need | |
| 288 | * the whole address in one register (e.g. it's a structure address and | |
| 289 | * you want to access various offsets within it). On ppc32 this is | |
| 290 | * identical to LOAD_REG_IMMEDIATE. | |
| 291 | * | |
| 1c49abec KH |
292 | * LOAD_REG_ADDR_PIC(rn, name) |
| 293 | * Loads the address of label 'name' into register 'run'. Use this when | |
| 294 | * the kernel doesn't run at the linked or relocated address. Please | |
| 295 | * note that this macro will clobber the lr register. | |
| 296 | * | |
| e58c3495 DG |
297 | * LOAD_REG_ADDRBASE(rn, name) |
| 298 | * ADDROFF(name) | |
| 299 | * LOAD_REG_ADDRBASE loads part of the address of label 'name' into | |
| 300 | * register 'rn'. ADDROFF(name) returns the remainder of the address as | |
| 301 | * a constant expression. ADDROFF(name) is a signed expression < 16 bits | |
| 302 | * in size, so is suitable for use directly as an offset in load and store | |
| 303 | * instructions. Use this when loading/storing a single word or less as: | |
| 304 | * LOAD_REG_ADDRBASE(rX, name) | |
| 305 | * ld rY,ADDROFF(name)(rX) | |
| 5f7c6907 | 306 | */ |
| 1c49abec KH |
307 | |
| 308 | /* Be careful, this will clobber the lr register. */ | |
| 309 | #define LOAD_REG_ADDR_PIC(reg, name) \ | |
| 310 | bl 0f; \ | |
| 311 | 0: mflr reg; \ | |
| 312 | addis reg,reg,(name - 0b)@ha; \ | |
| 313 | addi reg,reg,(name - 0b)@l; | |
| 314 | ||
| 5f7c6907 | 315 | #ifdef __powerpc64__ |
| 7998eb3d GR |
316 | #ifdef HAVE_AS_ATHIGH |
| 317 | #define __AS_ATHIGH high | |
| 318 | #else | |
| 319 | #define __AS_ATHIGH h | |
| 320 | #endif | |
| e58c3495 | 321 | #define LOAD_REG_IMMEDIATE(reg,expr) \ |
| 564aa5cf MN |
322 | lis reg,(expr)@highest; \ |
| 323 | ori reg,reg,(expr)@higher; \ | |
| 324 | rldicr reg,reg,32,31; \ | |
| 7998eb3d | 325 | oris reg,reg,(expr)@__AS_ATHIGH; \ |
| 564aa5cf | 326 | ori reg,reg,(expr)@l; |
| e58c3495 DG |
327 | |
| 328 | #define LOAD_REG_ADDR(reg,name) \ | |
| 564aa5cf | 329 | ld reg,name@got(r2) |
| e58c3495 DG |
330 | |
| 331 | #define LOAD_REG_ADDRBASE(reg,name) LOAD_REG_ADDR(reg,name) | |
| 332 | #define ADDROFF(name) 0 | |
| b85a046a | 333 | |
| f78541dc PM |
334 | /* offsets for stack frame layout */ |
| 335 | #define LRSAVE 16 | |
| b85a046a PM |
336 | |
| 337 | #else /* 32-bit */ | |
| 70620186 | 338 | |
| e58c3495 | 339 | #define LOAD_REG_IMMEDIATE(reg,expr) \ |
| 564aa5cf MN |
340 | lis reg,(expr)@ha; \ |
| 341 | addi reg,reg,(expr)@l; | |
| e58c3495 DG |
342 | |
| 343 | #define LOAD_REG_ADDR(reg,name) LOAD_REG_IMMEDIATE(reg, name) | |
| b85a046a | 344 | |
| 564aa5cf | 345 | #define LOAD_REG_ADDRBASE(reg, name) lis reg,name@ha |
| e58c3495 | 346 | #define ADDROFF(name) name@l |
| b85a046a | 347 | |
| f78541dc PM |
348 | /* offsets for stack frame layout */ |
| 349 | #define LRSAVE 4 | |
| b85a046a | 350 | |
| 5f7c6907 | 351 | #endif |
| 1da177e4 | 352 | |
| 5f7c6907 | 353 | /* various errata or part fixups */ |
| 1da177e4 LT |
354 | #ifdef CONFIG_PPC601_SYNC_FIX |
| 355 | #define SYNC \ | |
| 356 | BEGIN_FTR_SECTION \ | |
| 357 | sync; \ | |
| 358 | isync; \ | |
| 359 | END_FTR_SECTION_IFSET(CPU_FTR_601) | |
| 360 | #define SYNC_601 \ | |
| 361 | BEGIN_FTR_SECTION \ | |
| 362 | sync; \ | |
| 363 | END_FTR_SECTION_IFSET(CPU_FTR_601) | |
| 364 | #define ISYNC_601 \ | |
| 365 | BEGIN_FTR_SECTION \ | |
| 366 | isync; \ | |
| 367 | END_FTR_SECTION_IFSET(CPU_FTR_601) | |
| 368 | #else | |
| 369 | #define SYNC | |
| 370 | #define SYNC_601 | |
| 371 | #define ISYNC_601 | |
| 372 | #endif | |
| 373 | ||
| d52459ca | 374 | #if defined(CONFIG_PPC_CELL) || defined(CONFIG_PPC_FSL_BOOK3E) |
| 859deea9 | 375 | #define MFTB(dest) \ |
| beb2dc0a | 376 | 90: mfspr dest, SPRN_TBRL; \ |
| 859deea9 BH |
377 | BEGIN_FTR_SECTION_NESTED(96); \ |
| 378 | cmpwi dest,0; \ | |
| 379 | beq- 90b; \ | |
| 380 | END_FTR_SECTION_NESTED(CPU_FTR_CELL_TB_BUG, CPU_FTR_CELL_TB_BUG, 96) | |
| ae2163be LC |
381 | #elif defined(CONFIG_8xx) |
| 382 | #define MFTB(dest) mftb dest | |
| 859deea9 | 383 | #else |
| beb2dc0a | 384 | #define MFTB(dest) mfspr dest, SPRN_TBRL |
| 859deea9 | 385 | #endif |
| 5f7c6907 | 386 | |
| 1da177e4 LT |
387 | #ifndef CONFIG_SMP |
| 388 | #define TLBSYNC | |
| 389 | #else /* CONFIG_SMP */ | |
| 390 | /* tlbsync is not implemented on 601 */ | |
| 391 | #define TLBSYNC \ | |
| 392 | BEGIN_FTR_SECTION \ | |
| 393 | tlbsync; \ | |
| 394 | sync; \ | |
| 395 | END_FTR_SECTION_IFCLR(CPU_FTR_601) | |
| 396 | #endif | |
| 397 | ||
| 694caf02 AB |
398 | #ifdef CONFIG_PPC64 |
| 399 | #define MTOCRF(FXM, RS) \ | |
| 400 | BEGIN_FTR_SECTION_NESTED(848); \ | |
| 86e32fdc | 401 | mtcrf (FXM), RS; \ |
| 694caf02 | 402 | FTR_SECTION_ELSE_NESTED(848); \ |
| 86e32fdc | 403 | mtocrf (FXM), RS; \ |
| 694caf02 AB |
404 | ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_NOEXECUTE, 848) |
| 405 | #endif | |
| 406 | ||
| 1da177e4 LT |
407 | /* |
| 408 | * This instruction is not implemented on the PPC 603 or 601; however, on | |
| 409 | * the 403GCX and 405GP tlbia IS defined and tlbie is not. | |
| 410 | * All of these instructions exist in the 8xx, they have magical powers, | |
| 411 | * and they must be used. | |
| 412 | */ | |
| 413 | ||
| 414 | #if !defined(CONFIG_4xx) && !defined(CONFIG_8xx) | |
| 415 | #define tlbia \ | |
| 416 | li r4,1024; \ | |
| 417 | mtctr r4; \ | |
| 418 | lis r4,KERNELBASE@h; \ | |
| e3824e42 RC |
419 | .machine push; \ |
| 420 | .machine "power4"; \ | |
| 1da177e4 | 421 | 0: tlbie r4; \ |
| e3824e42 | 422 | .machine pop; \ |
| 1da177e4 LT |
423 | addi r4,r4,0x1000; \ |
| 424 | bdnz 0b | |
| 425 | #endif | |
| 426 | ||
| 5f7c6907 | 427 | |
| 5f7c6907 KG |
428 | #ifdef CONFIG_IBM440EP_ERR42 |
| 429 | #define PPC440EP_ERR42 isync | |
| 430 | #else | |
| 431 | #define PPC440EP_ERR42 | |
| 432 | #endif | |
| 433 | ||
| a515348f MN |
434 | /* The following stops all load and store data streams associated with stream |
| 435 | * ID (ie. streams created explicitly). The embedded and server mnemonics for | |
| 436 | * dcbt are different so we use machine "power4" here explicitly. | |
| 437 | */ | |
| 438 | #define DCBT_STOP_ALL_STREAM_IDS(scratch) \ | |
| 439 | .machine push ; \ | |
| 440 | .machine "power4" ; \ | |
| 441 | lis scratch,0x60000000@h; \ | |
| 442 | dcbt r0,scratch,0b01010; \ | |
| 443 | .machine pop | |
| 444 | ||
| 44c58ccc BH |
445 | /* |
| 446 | * toreal/fromreal/tophys/tovirt macros. 32-bit BookE makes them | |
| 447 | * keep the address intact to be compatible with code shared with | |
| 448 | * 32-bit classic. | |
| 449 | * | |
| 450 | * On the other hand, I find it useful to have them behave as expected | |
| 451 | * by their name (ie always do the addition) on 64-bit BookE | |
| 452 | */ | |
| 453 | #if defined(CONFIG_BOOKE) && !defined(CONFIG_PPC64) | |
| 6316222e PM |
454 | #define toreal(rd) |
| 455 | #define fromreal(rd) | |
| 456 | ||
| 2ca7633d RM |
457 | /* |
| 458 | * We use addis to ensure compatibility with the "classic" ppc versions of | |
| 459 | * these macros, which use rs = 0 to get the tophys offset in rd, rather than | |
| 460 | * converting the address in r0, and so this version has to do that too | |
| 461 | * (i.e. set register rd to 0 when rs == 0). | |
| 462 | */ | |
| 1da177e4 LT |
463 | #define tophys(rd,rs) \ |
| 464 | addis rd,rs,0 | |
| 465 | ||
| 466 | #define tovirt(rd,rs) \ | |
| 467 | addis rd,rs,0 | |
| 468 | ||
| 5f7c6907 | 469 | #elif defined(CONFIG_PPC64) |
| 6316222e PM |
470 | #define toreal(rd) /* we can access c000... in real mode */ |
| 471 | #define fromreal(rd) | |
| 472 | ||
| 5f7c6907 | 473 | #define tophys(rd,rs) \ |
| 6316222e | 474 | clrldi rd,rs,2 |
| 5f7c6907 KG |
475 | |
| 476 | #define tovirt(rd,rs) \ | |
| 6316222e PM |
477 | rotldi rd,rs,16; \ |
| 478 | ori rd,rd,((KERNELBASE>>48)&0xFFFF);\ | |
| 479 | rotldi rd,rd,48 | |
| 5f7c6907 | 480 | #else |
| 1da177e4 LT |
481 | /* |
| 482 | * On APUS (Amiga PowerPC cpu upgrade board), we don't know the | |
| 483 | * physical base address of RAM at compile time. | |
| 484 | */ | |
| 6316222e PM |
485 | #define toreal(rd) tophys(rd,rd) |
| 486 | #define fromreal(rd) tovirt(rd,rd) | |
| 487 | ||
| 1da177e4 | 488 | #define tophys(rd,rs) \ |
| ccdcef72 | 489 | 0: addis rd,rs,-PAGE_OFFSET@h; \ |
| 1da177e4 LT |
490 | .section ".vtop_fixup","aw"; \ |
| 491 | .align 1; \ | |
| 492 | .long 0b; \ | |
| 493 | .previous | |
| 494 | ||
| 495 | #define tovirt(rd,rs) \ | |
| ccdcef72 | 496 | 0: addis rd,rs,PAGE_OFFSET@h; \ |
| 1da177e4 LT |
497 | .section ".ptov_fixup","aw"; \ |
| 498 | .align 1; \ | |
| 499 | .long 0b; \ | |
| 500 | .previous | |
| 5f7c6907 | 501 | #endif |
| 1da177e4 | 502 | |
| 44c58ccc | 503 | #ifdef CONFIG_PPC_BOOK3S_64 |
| 40ef8cbc PM |
504 | #define RFI rfid |
| 505 | #define MTMSRD(r) mtmsrd r | |
| b38c77d8 | 506 | #define MTMSR_EERI(reg) mtmsrd reg,1 |
| 1da177e4 | 507 | #else |
| 1da177e4 LT |
508 | #ifndef CONFIG_40x |
| 509 | #define RFI rfi | |
| 510 | #else | |
| 511 | #define RFI rfi; b . /* Prevent prefetch past rfi */ | |
| 512 | #endif | |
| 513 | #define MTMSRD(r) mtmsr r | |
| b38c77d8 | 514 | #define MTMSR_EERI(reg) mtmsr reg |
| c9cf73ae MP |
515 | #endif |
| 516 | ||
| 88ced031 AB |
517 | #endif /* __KERNEL__ */ |
| 518 | ||
| 1da177e4 LT |
519 | /* The boring bits... */ |
| 520 | ||
| 521 | /* Condition Register Bit Fields */ | |
| 522 | ||
| 523 | #define cr0 0 | |
| 524 | #define cr1 1 | |
| 525 | #define cr2 2 | |
| 526 | #define cr3 3 | |
| 527 | #define cr4 4 | |
| 528 | #define cr5 5 | |
| 529 | #define cr6 6 | |
| 530 | #define cr7 7 | |
| 531 | ||
| 532 | ||
| 9a13a524 MN |
533 | /* |
| 534 | * General Purpose Registers (GPRs) | |
| 535 | * | |
| 536 | * The lower case r0-r31 should be used in preference to the upper | |
| 537 | * case R0-R31 as they provide more error checking in the assembler. | |
| 538 | * Use R0-31 only when really nessesary. | |
| 539 | */ | |
| 540 | ||
| 541 | #define r0 %r0 | |
| 542 | #define r1 %r1 | |
| 543 | #define r2 %r2 | |
| 544 | #define r3 %r3 | |
| 545 | #define r4 %r4 | |
| 546 | #define r5 %r5 | |
| 547 | #define r6 %r6 | |
| 548 | #define r7 %r7 | |
| 549 | #define r8 %r8 | |
| 550 | #define r9 %r9 | |
| 551 | #define r10 %r10 | |
| 552 | #define r11 %r11 | |
| 553 | #define r12 %r12 | |
| 554 | #define r13 %r13 | |
| 555 | #define r14 %r14 | |
| 556 | #define r15 %r15 | |
| 557 | #define r16 %r16 | |
| 558 | #define r17 %r17 | |
| 559 | #define r18 %r18 | |
| 560 | #define r19 %r19 | |
| 561 | #define r20 %r20 | |
| 562 | #define r21 %r21 | |
| 563 | #define r22 %r22 | |
| 564 | #define r23 %r23 | |
| 565 | #define r24 %r24 | |
| 566 | #define r25 %r25 | |
| 567 | #define r26 %r26 | |
| 568 | #define r27 %r27 | |
| 569 | #define r28 %r28 | |
| 570 | #define r29 %r29 | |
| 571 | #define r30 %r30 | |
| 572 | #define r31 %r31 | |
| 1da177e4 LT |
573 | |
| 574 | ||
| 575 | /* Floating Point Registers (FPRs) */ | |
| 576 | ||
| 577 | #define fr0 0 | |
| 578 | #define fr1 1 | |
| 579 | #define fr2 2 | |
| 580 | #define fr3 3 | |
| 581 | #define fr4 4 | |
| 582 | #define fr5 5 | |
| 583 | #define fr6 6 | |
| 584 | #define fr7 7 | |
| 585 | #define fr8 8 | |
| 586 | #define fr9 9 | |
| 587 | #define fr10 10 | |
| 588 | #define fr11 11 | |
| 589 | #define fr12 12 | |
| 590 | #define fr13 13 | |
| 591 | #define fr14 14 | |
| 592 | #define fr15 15 | |
| 593 | #define fr16 16 | |
| 594 | #define fr17 17 | |
| 595 | #define fr18 18 | |
| 596 | #define fr19 19 | |
| 597 | #define fr20 20 | |
| 598 | #define fr21 21 | |
| 599 | #define fr22 22 | |
| 600 | #define fr23 23 | |
| 601 | #define fr24 24 | |
| 602 | #define fr25 25 | |
| 603 | #define fr26 26 | |
| 604 | #define fr27 27 | |
| 605 | #define fr28 28 | |
| 606 | #define fr29 29 | |
| 607 | #define fr30 30 | |
| 608 | #define fr31 31 | |
| 609 | ||
| 5f7c6907 KG |
610 | /* AltiVec Registers (VPRs) */ |
| 611 | ||
| c2ce6f9f AB |
612 | #define v0 0 |
| 613 | #define v1 1 | |
| 614 | #define v2 2 | |
| 615 | #define v3 3 | |
| 616 | #define v4 4 | |
| 617 | #define v5 5 | |
| 618 | #define v6 6 | |
| 619 | #define v7 7 | |
| 620 | #define v8 8 | |
| 621 | #define v9 9 | |
| 622 | #define v10 10 | |
| 623 | #define v11 11 | |
| 624 | #define v12 12 | |
| 625 | #define v13 13 | |
| 626 | #define v14 14 | |
| 627 | #define v15 15 | |
| 628 | #define v16 16 | |
| 629 | #define v17 17 | |
| 630 | #define v18 18 | |
| 631 | #define v19 19 | |
| 632 | #define v20 20 | |
| 633 | #define v21 21 | |
| 634 | #define v22 22 | |
| 635 | #define v23 23 | |
| 636 | #define v24 24 | |
| 637 | #define v25 25 | |
| 638 | #define v26 26 | |
| 639 | #define v27 27 | |
| 640 | #define v28 28 | |
| 641 | #define v29 29 | |
| 642 | #define v30 30 | |
| 643 | #define v31 31 | |
| 1da177e4 | 644 | |
| 72ffff5b MN |
645 | /* VSX Registers (VSRs) */ |
| 646 | ||
| df99e6eb AB |
647 | #define vs0 0 |
| 648 | #define vs1 1 | |
| 649 | #define vs2 2 | |
| 650 | #define vs3 3 | |
| 651 | #define vs4 4 | |
| 652 | #define vs5 5 | |
| 653 | #define vs6 6 | |
| 654 | #define vs7 7 | |
| 655 | #define vs8 8 | |
| 656 | #define vs9 9 | |
| 657 | #define vs10 10 | |
| 658 | #define vs11 11 | |
| 659 | #define vs12 12 | |
| 660 | #define vs13 13 | |
| 661 | #define vs14 14 | |
| 662 | #define vs15 15 | |
| 663 | #define vs16 16 | |
| 664 | #define vs17 17 | |
| 665 | #define vs18 18 | |
| 666 | #define vs19 19 | |
| 667 | #define vs20 20 | |
| 668 | #define vs21 21 | |
| 669 | #define vs22 22 | |
| 670 | #define vs23 23 | |
| 671 | #define vs24 24 | |
| 672 | #define vs25 25 | |
| 673 | #define vs26 26 | |
| 674 | #define vs27 27 | |
| 675 | #define vs28 28 | |
| 676 | #define vs29 29 | |
| 677 | #define vs30 30 | |
| 678 | #define vs31 31 | |
| 679 | #define vs32 32 | |
| 680 | #define vs33 33 | |
| 681 | #define vs34 34 | |
| 682 | #define vs35 35 | |
| 683 | #define vs36 36 | |
| 684 | #define vs37 37 | |
| 685 | #define vs38 38 | |
| 686 | #define vs39 39 | |
| 687 | #define vs40 40 | |
| 688 | #define vs41 41 | |
| 689 | #define vs42 42 | |
| 690 | #define vs43 43 | |
| 691 | #define vs44 44 | |
| 692 | #define vs45 45 | |
| 693 | #define vs46 46 | |
| 694 | #define vs47 47 | |
| 695 | #define vs48 48 | |
| 696 | #define vs49 49 | |
| 697 | #define vs50 50 | |
| 698 | #define vs51 51 | |
| 699 | #define vs52 52 | |
| 700 | #define vs53 53 | |
| 701 | #define vs54 54 | |
| 702 | #define vs55 55 | |
| 703 | #define vs56 56 | |
| 704 | #define vs57 57 | |
| 705 | #define vs58 58 | |
| 706 | #define vs59 59 | |
| 707 | #define vs60 60 | |
| 708 | #define vs61 61 | |
| 709 | #define vs62 62 | |
| 710 | #define vs63 63 | |
| 72ffff5b | 711 | |
| 5f7c6907 KG |
712 | /* SPE Registers (EVPRs) */ |
| 713 | ||
| 1da177e4 LT |
714 | #define evr0 0 |
| 715 | #define evr1 1 | |
| 716 | #define evr2 2 | |
| 717 | #define evr3 3 | |
| 718 | #define evr4 4 | |
| 719 | #define evr5 5 | |
| 720 | #define evr6 6 | |
| 721 | #define evr7 7 | |
| 722 | #define evr8 8 | |
| 723 | #define evr9 9 | |
| 724 | #define evr10 10 | |
| 725 | #define evr11 11 | |
| 726 | #define evr12 12 | |
| 727 | #define evr13 13 | |
| 728 | #define evr14 14 | |
| 729 | #define evr15 15 | |
| 730 | #define evr16 16 | |
| 731 | #define evr17 17 | |
| 732 | #define evr18 18 | |
| 733 | #define evr19 19 | |
| 734 | #define evr20 20 | |
| 735 | #define evr21 21 | |
| 736 | #define evr22 22 | |
| 737 | #define evr23 23 | |
| 738 | #define evr24 24 | |
| 739 | #define evr25 25 | |
| 740 | #define evr26 26 | |
| 741 | #define evr27 27 | |
| 742 | #define evr28 28 | |
| 743 | #define evr29 29 | |
| 744 | #define evr30 30 | |
| 745 | #define evr31 31 | |
| 746 | ||
| 747 | /* some stab codes */ | |
| 748 | #define N_FUN 36 | |
| 749 | #define N_RSYM 64 | |
| 750 | #define N_SLINE 68 | |
| 751 | #define N_SO 100 | |
| 5f7c6907 | 752 | |
| 5c0484e2 BH |
753 | /* |
| 754 | * Create an endian fixup trampoline | |
| 755 | * | |
| 756 | * This starts with a "tdi 0,0,0x48" instruction which is | |
| 757 | * essentially a "trap never", and thus akin to a nop. | |
| 758 | * | |
| 759 | * The opcode for this instruction read with the wrong endian | |
| 760 | * however results in a b . + 8 | |
| 761 | * | |
| 762 | * So essentially we use that trick to execute the following | |
| 763 | * trampoline in "reverse endian" if we are running with the | |
| 764 | * MSR_LE bit set the "wrong" way for whatever endianness the | |
| 765 | * kernel is built for. | |
| 766 | */ | |
| 5f7c6907 | 767 | |
| 5c0484e2 BH |
768 | #ifdef CONFIG_PPC_BOOK3E |
| 769 | #define FIXUP_ENDIAN | |
| 770 | #else | |
| 771 | #define FIXUP_ENDIAN \ | |
| 772 | tdi 0,0,0x48; /* Reverse endian of b . + 8 */ \ | |
| 773 | b $+36; /* Skip trampoline if endian is good */ \ | |
| 774 | .long 0x05009f42; /* bcl 20,31,$+4 */ \ | |
| 775 | .long 0xa602487d; /* mflr r10 */ \ | |
| 776 | .long 0x1c004a39; /* addi r10,r10,28 */ \ | |
| 777 | .long 0xa600607d; /* mfmsr r11 */ \ | |
| 778 | .long 0x01006b69; /* xori r11,r11,1 */ \ | |
| 779 | .long 0xa6035a7d; /* mtsrr0 r10 */ \ | |
| 780 | .long 0xa6037b7d; /* mtsrr1 r11 */ \ | |
| 781 | .long 0x2400004c /* rfid */ | |
| 782 | #endif /* !CONFIG_PPC_BOOK3E */ | |
| e3f2c6c3 | 783 | |
| 5c0484e2 | 784 | #endif /* __ASSEMBLY__ */ |
| e3f2c6c3 | 785 | |
| 24bfa6a9 NP |
786 | /* |
| 787 | * Helper macro for exception table entries | |
| 788 | */ | |
| 789 | #define EX_TABLE(_fault, _target) \ | |
| 790 | stringify_in_c(.section __ex_table,"a";)\ | |
| 61a92f70 NP |
791 | stringify_in_c(.balign 4;) \ |
| 792 | stringify_in_c(.long (_fault) - . ;) \ | |
| 793 | stringify_in_c(.long (_target) - . ;) \ | |
| 24bfa6a9 NP |
794 | stringify_in_c(.previous) |
| 795 | ||
| 5f7c6907 | 796 | #endif /* _ASM_POWERPC_PPC_ASM_H */ |