Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 1 | #ifndef _ASM_POWERPC_EXCEPTION_H |
| 2 | #define _ASM_POWERPC_EXCEPTION_H |
| 3 | /* |
| 4 | * Extracted from head_64.S |
| 5 | * |
| 6 | * PowerPC version |
| 7 | * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) |
| 8 | * |
| 9 | * Rewritten by Cort Dougan (cort@cs.nmt.edu) for PReP |
| 10 | * Copyright (C) 1996 Cort Dougan <cort@cs.nmt.edu> |
| 11 | * Adapted for Power Macintosh by Paul Mackerras. |
| 12 | * Low-level exception handlers and MMU support |
| 13 | * rewritten by Paul Mackerras. |
| 14 | * Copyright (C) 1996 Paul Mackerras. |
| 15 | * |
| 16 | * Adapted for 64bit PowerPC by Dave Engebretsen, Peter Bergner, and |
| 17 | * Mike Corrigan {engebret|bergner|mikejc}@us.ibm.com |
| 18 | * |
| 19 | * This file contains the low-level support and setup for the |
| 20 | * PowerPC-64 platform, including trap and interrupt dispatch. |
| 21 | * |
| 22 | * This program is free software; you can redistribute it and/or |
| 23 | * modify it under the terms of the GNU General Public License |
| 24 | * as published by the Free Software Foundation; either version |
| 25 | * 2 of the License, or (at your option) any later version. |
| 26 | */ |
| 27 | /* |
| 28 | * The following macros define the code that appears as |
| 29 | * the prologue to each of the exception handlers. They |
| 30 | * are split into two parts to allow a single kernel binary |
| 31 | * to be used for pSeries and iSeries. |
| 32 | * |
| 33 | * We make as much of the exception code common between native |
| 34 | * exception handlers (including pSeries LPAR) and iSeries LPAR |
| 35 | * implementations as possible. |
| 36 | */ |
| 37 | |
| 38 | #define EX_R9 0 |
| 39 | #define EX_R10 8 |
| 40 | #define EX_R11 16 |
| 41 | #define EX_R12 24 |
| 42 | #define EX_R13 32 |
| 43 | #define EX_SRR0 40 |
| 44 | #define EX_DAR 48 |
| 45 | #define EX_DSISR 56 |
| 46 | #define EX_CCR 60 |
| 47 | #define EX_R3 64 |
| 48 | #define EX_LR 72 |
Paul Mackerras | 48404f2 | 2011-05-01 19:48:20 +0000 | [diff] [blame] | 49 | #define EX_CFAR 80 |
Haren Myneni | a09688c | 2012-12-06 21:48:26 +0000 | [diff] [blame] | 50 | #define EX_PPR 88 /* SMT thread status register (priority) */ |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 51 | |
Michael Neuling | 4700dfa | 2012-11-02 17:21:28 +1100 | [diff] [blame] | 52 | #ifdef CONFIG_RELOCATABLE |
Paul Mackerras | 1707dd1 | 2013-02-04 18:10:15 +0000 | [diff] [blame] | 53 | #define __EXCEPTION_RELON_PROLOG_PSERIES_1(label, h) \ |
Michael Neuling | 4700dfa | 2012-11-02 17:21:28 +1100 | [diff] [blame] | 54 | ld r12,PACAKBASE(r13); /* get high part of &label */ \ |
| 55 | mfspr r11,SPRN_##h##SRR0; /* save SRR0 */ \ |
| 56 | LOAD_HANDLER(r12,label); \ |
| 57 | mtlr r12; \ |
| 58 | mfspr r12,SPRN_##h##SRR1; /* and SRR1 */ \ |
| 59 | li r10,MSR_RI; \ |
| 60 | mtmsrd r10,1; /* Set RI (EE=0) */ \ |
| 61 | blr; |
| 62 | #else |
| 63 | /* If not relocatable, we can jump directly -- and save messing with LR */ |
Paul Mackerras | 1707dd1 | 2013-02-04 18:10:15 +0000 | [diff] [blame] | 64 | #define __EXCEPTION_RELON_PROLOG_PSERIES_1(label, h) \ |
Michael Neuling | 4700dfa | 2012-11-02 17:21:28 +1100 | [diff] [blame] | 65 | mfspr r11,SPRN_##h##SRR0; /* save SRR0 */ \ |
| 66 | mfspr r12,SPRN_##h##SRR1; /* and SRR1 */ \ |
| 67 | li r10,MSR_RI; \ |
| 68 | mtmsrd r10,1; /* Set RI (EE=0) */ \ |
| 69 | b label; |
| 70 | #endif |
Paul Mackerras | 1707dd1 | 2013-02-04 18:10:15 +0000 | [diff] [blame] | 71 | #define EXCEPTION_RELON_PROLOG_PSERIES_1(label, h) \ |
| 72 | __EXCEPTION_RELON_PROLOG_PSERIES_1(label, h) \ |
Michael Neuling | 4700dfa | 2012-11-02 17:21:28 +1100 | [diff] [blame] | 73 | |
| 74 | /* |
| 75 | * As EXCEPTION_PROLOG_PSERIES(), except we've already got relocation on |
| 76 | * so no need to rfid. Save lr in case we're CONFIG_RELOCATABLE, in which |
| 77 | * case EXCEPTION_RELON_PROLOG_PSERIES_1 will be using lr. |
| 78 | */ |
| 79 | #define EXCEPTION_RELON_PROLOG_PSERIES(area, label, h, extra, vec) \ |
Paul Mackerras | 1707dd1 | 2013-02-04 18:10:15 +0000 | [diff] [blame] | 80 | EXCEPTION_PROLOG_0(area); \ |
Michael Neuling | 4700dfa | 2012-11-02 17:21:28 +1100 | [diff] [blame] | 81 | EXCEPTION_PROLOG_1(area, extra, vec); \ |
| 82 | EXCEPTION_RELON_PROLOG_PSERIES_1(label, h) |
| 83 | |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 84 | /* |
| 85 | * We're short on space and time in the exception prolog, so we can't |
| 86 | * use the normal SET_REG_IMMEDIATE macro. Normally we just need the |
| 87 | * low halfword of the address, but for Kdump we need the whole low |
| 88 | * word. |
| 89 | */ |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 90 | #define LOAD_HANDLER(reg, label) \ |
Michael Neuling | 61e2390 | 2012-11-05 17:10:35 +1100 | [diff] [blame] | 91 | /* Handlers must be within 64K of kbase, which must be 64k aligned */ \ |
| 92 | ori reg,reg,(label)-_stext; /* virt addr of handler ... */ |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 93 | |
Benjamin Herrenschmidt | a5d4f3a | 2011-04-05 14:20:31 +1000 | [diff] [blame] | 94 | /* Exception register prefixes */ |
| 95 | #define EXC_HV H |
| 96 | #define EXC_STD |
| 97 | |
Michael Neuling | 4700dfa | 2012-11-02 17:21:28 +1100 | [diff] [blame] | 98 | #if defined(CONFIG_RELOCATABLE) |
| 99 | /* |
| 100 | * If we support interrupts with relocation on AND we're a relocatable |
| 101 | * kernel, we need to use LR to get to the 2nd level handler. So, save/restore |
| 102 | * it when required. |
| 103 | */ |
| 104 | #define SAVE_LR(reg, area) mflr reg ; std reg,area+EX_LR(r13) |
| 105 | #define GET_LR(reg, area) ld reg,area+EX_LR(r13) |
| 106 | #define RESTORE_LR(reg, area) ld reg,area+EX_LR(r13) ; mtlr reg |
| 107 | #else |
| 108 | /* ...else LR is unused and in register. */ |
| 109 | #define SAVE_LR(reg, area) |
| 110 | #define GET_LR(reg, area) mflr reg |
| 111 | #define RESTORE_LR(reg, area) |
| 112 | #endif |
| 113 | |
Haren Myneni | 13e7a8e | 2012-12-06 21:50:32 +0000 | [diff] [blame] | 114 | /* |
| 115 | * PPR save/restore macros used in exceptions_64s.S |
| 116 | * Used for P7 or later processors |
| 117 | */ |
| 118 | #define SAVE_PPR(area, ra, rb) \ |
| 119 | BEGIN_FTR_SECTION_NESTED(940) \ |
| 120 | ld ra,PACACURRENT(r13); \ |
| 121 | ld rb,area+EX_PPR(r13); /* Read PPR from paca */ \ |
| 122 | std rb,TASKTHREADPPR(ra); \ |
| 123 | END_FTR_SECTION_NESTED(CPU_FTR_HAS_PPR,CPU_FTR_HAS_PPR,940) |
| 124 | |
| 125 | #define RESTORE_PPR_PACA(area, ra) \ |
| 126 | BEGIN_FTR_SECTION_NESTED(941) \ |
| 127 | ld ra,area+EX_PPR(r13); \ |
| 128 | mtspr SPRN_PPR,ra; \ |
| 129 | END_FTR_SECTION_NESTED(CPU_FTR_HAS_PPR,CPU_FTR_HAS_PPR,941) |
| 130 | |
| 131 | /* |
| 132 | * Increase the priority on systems where PPR save/restore is not |
| 133 | * implemented/ supported. |
| 134 | */ |
| 135 | #define HMT_MEDIUM_PPR_DISCARD \ |
| 136 | BEGIN_FTR_SECTION_NESTED(942) \ |
| 137 | HMT_MEDIUM; \ |
| 138 | END_FTR_SECTION_NESTED(CPU_FTR_HAS_PPR,0,942) /*non P7*/ |
| 139 | |
| 140 | /* |
Paul Mackerras | 1707dd1 | 2013-02-04 18:10:15 +0000 | [diff] [blame] | 141 | * Get an SPR into a register if the CPU has the given feature |
Haren Myneni | 13e7a8e | 2012-12-06 21:50:32 +0000 | [diff] [blame] | 142 | */ |
Paul Mackerras | 1707dd1 | 2013-02-04 18:10:15 +0000 | [diff] [blame] | 143 | #define OPT_GET_SPR(ra, spr, ftr) \ |
Haren Myneni | 13e7a8e | 2012-12-06 21:50:32 +0000 | [diff] [blame] | 144 | BEGIN_FTR_SECTION_NESTED(943) \ |
Paul Mackerras | 1707dd1 | 2013-02-04 18:10:15 +0000 | [diff] [blame] | 145 | mfspr ra,spr; \ |
| 146 | END_FTR_SECTION_NESTED(ftr,ftr,943) |
Haren Myneni | 13e7a8e | 2012-12-06 21:50:32 +0000 | [diff] [blame] | 147 | |
Paul Mackerras | 1707dd1 | 2013-02-04 18:10:15 +0000 | [diff] [blame] | 148 | /* |
| 149 | * Save a register to the PACA if the CPU has the given feature |
| 150 | */ |
| 151 | #define OPT_SAVE_REG_TO_PACA(offset, ra, ftr) \ |
| 152 | BEGIN_FTR_SECTION_NESTED(943) \ |
| 153 | std ra,offset(r13); \ |
| 154 | END_FTR_SECTION_NESTED(ftr,ftr,943) |
| 155 | |
| 156 | #define EXCEPTION_PROLOG_0(area) \ |
Benjamin Herrenschmidt | 2dd60d7 | 2011-01-20 17:50:21 +1100 | [diff] [blame] | 157 | GET_PACA(r13); \ |
Haren Myneni | 44e9309 | 2012-12-06 21:51:04 +0000 | [diff] [blame] | 158 | std r9,area+EX_R9(r13); /* save r9 */ \ |
Paul Mackerras | 1707dd1 | 2013-02-04 18:10:15 +0000 | [diff] [blame] | 159 | OPT_GET_SPR(r9, SPRN_PPR, CPU_FTR_HAS_PPR); \ |
| 160 | HMT_MEDIUM; \ |
Haren Myneni | 44e9309 | 2012-12-06 21:51:04 +0000 | [diff] [blame] | 161 | std r10,area+EX_R10(r13); /* save r10 - r12 */ \ |
Paul Mackerras | 1707dd1 | 2013-02-04 18:10:15 +0000 | [diff] [blame] | 162 | OPT_GET_SPR(r10, SPRN_CFAR, CPU_FTR_CFAR) |
| 163 | |
| 164 | #define __EXCEPTION_PROLOG_1(area, extra, vec) \ |
| 165 | OPT_SAVE_REG_TO_PACA(area+EX_PPR, r9, CPU_FTR_HAS_PPR); \ |
| 166 | OPT_SAVE_REG_TO_PACA(area+EX_CFAR, r10, CPU_FTR_CFAR); \ |
Michael Neuling | c1fb681 | 2012-11-02 17:21:43 +1100 | [diff] [blame] | 167 | SAVE_LR(r10, area); \ |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 168 | mfcr r9; \ |
| 169 | extra(vec); \ |
| 170 | std r11,area+EX_R11(r13); \ |
| 171 | std r12,area+EX_R12(r13); \ |
| 172 | GET_SCRATCH0(r10); \ |
| 173 | std r10,area+EX_R13(r13) |
| 174 | #define EXCEPTION_PROLOG_1(area, extra, vec) \ |
| 175 | __EXCEPTION_PROLOG_1(area, extra, vec) |
Stephen Rothwell | 7180e3e | 2007-08-22 13:48:37 +1000 | [diff] [blame] | 176 | |
Benjamin Herrenschmidt | a5d4f3a | 2011-04-05 14:20:31 +1000 | [diff] [blame] | 177 | #define __EXCEPTION_PROLOG_PSERIES_1(label, h) \ |
Paul Mackerras | 1f6a93e | 2008-08-30 11:40:24 +1000 | [diff] [blame] | 178 | ld r12,PACAKBASE(r13); /* get high part of &label */ \ |
| 179 | ld r10,PACAKMSR(r13); /* get MSR value for kernel */ \ |
Benjamin Herrenschmidt | a5d4f3a | 2011-04-05 14:20:31 +1000 | [diff] [blame] | 180 | mfspr r11,SPRN_##h##SRR0; /* save SRR0 */ \ |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 181 | LOAD_HANDLER(r12,label) \ |
Benjamin Herrenschmidt | a5d4f3a | 2011-04-05 14:20:31 +1000 | [diff] [blame] | 182 | mtspr SPRN_##h##SRR0,r12; \ |
| 183 | mfspr r12,SPRN_##h##SRR1; /* and SRR1 */ \ |
| 184 | mtspr SPRN_##h##SRR1,r10; \ |
| 185 | h##rfid; \ |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 186 | b . /* prevent speculative execution */ |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 187 | #define EXCEPTION_PROLOG_PSERIES_1(label, h) \ |
Benjamin Herrenschmidt | a5d4f3a | 2011-04-05 14:20:31 +1000 | [diff] [blame] | 188 | __EXCEPTION_PROLOG_PSERIES_1(label, h) |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 189 | |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 190 | #define EXCEPTION_PROLOG_PSERIES(area, label, h, extra, vec) \ |
Paul Mackerras | 1707dd1 | 2013-02-04 18:10:15 +0000 | [diff] [blame] | 191 | EXCEPTION_PROLOG_0(area); \ |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 192 | EXCEPTION_PROLOG_1(area, extra, vec); \ |
Benjamin Herrenschmidt | a5d4f3a | 2011-04-05 14:20:31 +1000 | [diff] [blame] | 193 | EXCEPTION_PROLOG_PSERIES_1(label, h); |
Benjamin Herrenschmidt | c5a8c0c | 2009-07-16 19:36:57 +0000 | [diff] [blame] | 194 | |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 195 | #define __KVMTEST(n) \ |
Paul Mackerras | 3c42bf8 | 2011-06-29 00:20:58 +0000 | [diff] [blame] | 196 | lbz r10,HSTATE_IN_GUEST(r13); \ |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 197 | cmpwi r10,0; \ |
| 198 | bne do_kvm_##n |
| 199 | |
| 200 | #define __KVM_HANDLER(area, h, n) \ |
| 201 | do_kvm_##n: \ |
Paul Mackerras | 0acb911 | 2013-02-04 18:10:51 +0000 | [diff] [blame] | 202 | BEGIN_FTR_SECTION_NESTED(947) \ |
| 203 | ld r10,area+EX_CFAR(r13); \ |
| 204 | std r10,HSTATE_CFAR(r13); \ |
| 205 | END_FTR_SECTION_NESTED(CPU_FTR_CFAR,CPU_FTR_CFAR,947); \ |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 206 | ld r10,area+EX_R10(r13); \ |
Paul Mackerras | 0acb911 | 2013-02-04 18:10:51 +0000 | [diff] [blame] | 207 | stw r9,HSTATE_SCRATCH1(r13); \ |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 208 | ld r9,area+EX_R9(r13); \ |
Paul Mackerras | 0acb911 | 2013-02-04 18:10:51 +0000 | [diff] [blame] | 209 | std r12,HSTATE_SCRATCH0(r13); \ |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 210 | li r12,n; \ |
| 211 | b kvmppc_interrupt |
| 212 | |
| 213 | #define __KVM_HANDLER_SKIP(area, h, n) \ |
| 214 | do_kvm_##n: \ |
| 215 | cmpwi r10,KVM_GUEST_MODE_SKIP; \ |
| 216 | ld r10,area+EX_R10(r13); \ |
| 217 | beq 89f; \ |
Paul Mackerras | 3c42bf8 | 2011-06-29 00:20:58 +0000 | [diff] [blame] | 218 | stw r9,HSTATE_SCRATCH1(r13); \ |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 219 | ld r9,area+EX_R9(r13); \ |
Paul Mackerras | 3c42bf8 | 2011-06-29 00:20:58 +0000 | [diff] [blame] | 220 | std r12,HSTATE_SCRATCH0(r13); \ |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 221 | li r12,n; \ |
| 222 | b kvmppc_interrupt; \ |
| 223 | 89: mtocrf 0x80,r9; \ |
| 224 | ld r9,area+EX_R9(r13); \ |
| 225 | b kvmppc_skip_##h##interrupt |
| 226 | |
| 227 | #ifdef CONFIG_KVM_BOOK3S_64_HANDLER |
| 228 | #define KVMTEST(n) __KVMTEST(n) |
| 229 | #define KVM_HANDLER(area, h, n) __KVM_HANDLER(area, h, n) |
| 230 | #define KVM_HANDLER_SKIP(area, h, n) __KVM_HANDLER_SKIP(area, h, n) |
| 231 | |
| 232 | #else |
| 233 | #define KVMTEST(n) |
| 234 | #define KVM_HANDLER(area, h, n) |
| 235 | #define KVM_HANDLER_SKIP(area, h, n) |
| 236 | #endif |
| 237 | |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 238 | #ifdef CONFIG_KVM_BOOK3S_PR |
| 239 | #define KVMTEST_PR(n) __KVMTEST(n) |
| 240 | #define KVM_HANDLER_PR(area, h, n) __KVM_HANDLER(area, h, n) |
| 241 | #define KVM_HANDLER_PR_SKIP(area, h, n) __KVM_HANDLER_SKIP(area, h, n) |
| 242 | |
| 243 | #else |
| 244 | #define KVMTEST_PR(n) |
| 245 | #define KVM_HANDLER_PR(area, h, n) |
| 246 | #define KVM_HANDLER_PR_SKIP(area, h, n) |
| 247 | #endif |
| 248 | |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 249 | #define NOTEST(n) |
| 250 | |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 251 | /* |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 252 | * The common exception prolog is used for all except a few exceptions |
| 253 | * such as a segment miss on a kernel address. We have to be prepared |
| 254 | * to take another exception from the point where we first touch the |
| 255 | * kernel stack onwards. |
| 256 | * |
| 257 | * On entry r13 points to the paca, r9-r13 are saved in the paca, |
| 258 | * r9 contains the saved CR, r11 and r12 contain the saved SRR0 and |
| 259 | * SRR1, and relocation is on. |
| 260 | */ |
| 261 | #define EXCEPTION_PROLOG_COMMON(n, area) \ |
| 262 | andi. r10,r12,MSR_PR; /* See if coming from user */ \ |
| 263 | mr r10,r1; /* Save r1 */ \ |
| 264 | subi r1,r1,INT_FRAME_SIZE; /* alloc frame on kernel stack */ \ |
| 265 | beq- 1f; \ |
| 266 | ld r1,PACAKSAVE(r13); /* kernel stack to use */ \ |
| 267 | 1: cmpdi cr1,r1,0; /* check if r1 is in userspace */ \ |
Paul Mackerras | 1977b50 | 2011-05-01 19:46:44 +0000 | [diff] [blame] | 268 | blt+ cr1,3f; /* abort if it is */ \ |
| 269 | li r1,(n); /* will be reloaded later */ \ |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 270 | sth r1,PACA_TRAP_SAVE(r13); \ |
Paul Mackerras | 1977b50 | 2011-05-01 19:46:44 +0000 | [diff] [blame] | 271 | std r3,area+EX_R3(r13); \ |
| 272 | addi r3,r13,area; /* r3 -> where regs are saved*/ \ |
Michael Neuling | c1fb681 | 2012-11-02 17:21:43 +1100 | [diff] [blame] | 273 | RESTORE_LR(r1, area); \ |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 274 | b bad_stack; \ |
| 275 | 3: std r9,_CCR(r1); /* save CR in stackframe */ \ |
| 276 | std r11,_NIP(r1); /* save SRR0 in stackframe */ \ |
| 277 | std r12,_MSR(r1); /* save SRR1 in stackframe */ \ |
| 278 | std r10,0(r1); /* make stack chain pointer */ \ |
| 279 | std r0,GPR0(r1); /* save r0 in stackframe */ \ |
| 280 | std r10,GPR1(r1); /* save r1 in stackframe */ \ |
Haren Myneni | 5d75b26 | 2012-12-06 21:46:37 +0000 | [diff] [blame] | 281 | beq 4f; /* if from kernel mode */ \ |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 282 | ACCOUNT_CPU_USER_ENTRY(r9, r10); \ |
Haren Myneni | 44e9309 | 2012-12-06 21:51:04 +0000 | [diff] [blame] | 283 | SAVE_PPR(area, r9, r10); \ |
Haren Myneni | 5d75b26 | 2012-12-06 21:46:37 +0000 | [diff] [blame] | 284 | 4: std r2,GPR2(r1); /* save r2 in stackframe */ \ |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 285 | SAVE_4GPRS(3, r1); /* save r3 - r6 in stackframe */ \ |
| 286 | SAVE_2GPRS(7, r1); /* save r7, r8 in stackframe */ \ |
| 287 | ld r9,area+EX_R9(r13); /* move r9, r10 to stackframe */ \ |
| 288 | ld r10,area+EX_R10(r13); \ |
| 289 | std r9,GPR9(r1); \ |
| 290 | std r10,GPR10(r1); \ |
| 291 | ld r9,area+EX_R11(r13); /* move r11 - r13 to stackframe */ \ |
| 292 | ld r10,area+EX_R12(r13); \ |
| 293 | ld r11,area+EX_R13(r13); \ |
| 294 | std r9,GPR11(r1); \ |
| 295 | std r10,GPR12(r1); \ |
| 296 | std r11,GPR13(r1); \ |
Paul Mackerras | 48404f2 | 2011-05-01 19:48:20 +0000 | [diff] [blame] | 297 | BEGIN_FTR_SECTION_NESTED(66); \ |
| 298 | ld r10,area+EX_CFAR(r13); \ |
| 299 | std r10,ORIG_GPR3(r1); \ |
| 300 | END_FTR_SECTION_NESTED(CPU_FTR_CFAR, CPU_FTR_CFAR, 66); \ |
Michael Neuling | c1fb681 | 2012-11-02 17:21:43 +1100 | [diff] [blame] | 301 | GET_LR(r9,area); /* Get LR, later save to stack */ \ |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 302 | ld r2,PACATOC(r13); /* get kernel TOC into r2 */ \ |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 303 | std r9,_LINK(r1); \ |
| 304 | mfctr r10; /* save CTR in stackframe */ \ |
| 305 | std r10,_CTR(r1); \ |
| 306 | lbz r10,PACASOFTIRQEN(r13); \ |
| 307 | mfspr r11,SPRN_XER; /* save XER in stackframe */ \ |
| 308 | std r10,SOFTE(r1); \ |
| 309 | std r11,_XER(r1); \ |
| 310 | li r9,(n)+1; \ |
| 311 | std r9,_TRAP(r1); /* set trap number */ \ |
| 312 | li r10,0; \ |
| 313 | ld r11,exception_marker@toc(r2); \ |
| 314 | std r10,RESULT(r1); /* clear regs->result */ \ |
Paul Mackerras | cf9efce | 2010-08-26 19:56:43 +0000 | [diff] [blame] | 315 | std r11,STACK_FRAME_OVERHEAD-16(r1); /* mark the frame */ \ |
| 316 | ACCOUNT_STOLEN_TIME |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 317 | |
| 318 | /* |
| 319 | * Exception vectors. |
| 320 | */ |
Benjamin Herrenschmidt | b3e6b5d | 2011-04-05 14:27:11 +1000 | [diff] [blame] | 321 | #define STD_EXCEPTION_PSERIES(loc, vec, label) \ |
| 322 | . = loc; \ |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 323 | .globl label##_pSeries; \ |
| 324 | label##_pSeries: \ |
Haren Myneni | 44e9309 | 2012-12-06 21:51:04 +0000 | [diff] [blame] | 325 | HMT_MEDIUM_PPR_DISCARD; \ |
Paul Mackerras | 673b189 | 2011-04-05 13:59:58 +1000 | [diff] [blame] | 326 | SET_SCRATCH0(r13); /* save r13 */ \ |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 327 | EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, label##_common, \ |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 328 | EXC_STD, KVMTEST_PR, vec) |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 329 | |
Paul Mackerras | 1707dd1 | 2013-02-04 18:10:15 +0000 | [diff] [blame] | 330 | /* Version of above for when we have to branch out-of-line */ |
| 331 | #define STD_EXCEPTION_PSERIES_OOL(vec, label) \ |
| 332 | .globl label##_pSeries; \ |
| 333 | label##_pSeries: \ |
| 334 | EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_PR, vec); \ |
| 335 | EXCEPTION_PROLOG_PSERIES_1(label##_common, EXC_STD) |
| 336 | |
Benjamin Herrenschmidt | b3e6b5d | 2011-04-05 14:27:11 +1000 | [diff] [blame] | 337 | #define STD_EXCEPTION_HV(loc, vec, label) \ |
| 338 | . = loc; \ |
| 339 | .globl label##_hv; \ |
| 340 | label##_hv: \ |
Haren Myneni | 44e9309 | 2012-12-06 21:51:04 +0000 | [diff] [blame] | 341 | HMT_MEDIUM_PPR_DISCARD; \ |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 342 | SET_SCRATCH0(r13); /* save r13 */ \ |
| 343 | EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, label##_common, \ |
| 344 | EXC_HV, KVMTEST, vec) |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 345 | |
Paul Mackerras | 1707dd1 | 2013-02-04 18:10:15 +0000 | [diff] [blame] | 346 | /* Version of above for when we have to branch out-of-line */ |
| 347 | #define STD_EXCEPTION_HV_OOL(vec, label) \ |
| 348 | .globl label##_hv; \ |
| 349 | label##_hv: \ |
| 350 | EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST, vec); \ |
| 351 | EXCEPTION_PROLOG_PSERIES_1(label##_common, EXC_HV) |
| 352 | |
Michael Neuling | 4700dfa | 2012-11-02 17:21:28 +1100 | [diff] [blame] | 353 | #define STD_RELON_EXCEPTION_PSERIES(loc, vec, label) \ |
| 354 | . = loc; \ |
| 355 | .globl label##_relon_pSeries; \ |
| 356 | label##_relon_pSeries: \ |
Haren Myneni | 44e9309 | 2012-12-06 21:51:04 +0000 | [diff] [blame] | 357 | HMT_MEDIUM_PPR_DISCARD; \ |
Michael Neuling | 4700dfa | 2012-11-02 17:21:28 +1100 | [diff] [blame] | 358 | /* No guest interrupts come through here */ \ |
| 359 | SET_SCRATCH0(r13); /* save r13 */ \ |
| 360 | EXCEPTION_RELON_PROLOG_PSERIES(PACA_EXGEN, label##_common, \ |
| 361 | EXC_STD, KVMTEST_PR, vec) |
| 362 | |
Paul Mackerras | 1707dd1 | 2013-02-04 18:10:15 +0000 | [diff] [blame] | 363 | #define STD_RELON_EXCEPTION_PSERIES_OOL(vec, label) \ |
| 364 | .globl label##_relon_pSeries; \ |
| 365 | label##_relon_pSeries: \ |
| 366 | EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_PR, vec); \ |
| 367 | EXCEPTION_RELON_PROLOG_PSERIES_1(label##_common, EXC_STD) |
| 368 | |
Michael Neuling | 4700dfa | 2012-11-02 17:21:28 +1100 | [diff] [blame] | 369 | #define STD_RELON_EXCEPTION_HV(loc, vec, label) \ |
| 370 | . = loc; \ |
| 371 | .globl label##_relon_hv; \ |
| 372 | label##_relon_hv: \ |
Haren Myneni | 44e9309 | 2012-12-06 21:51:04 +0000 | [diff] [blame] | 373 | HMT_MEDIUM_PPR_DISCARD; \ |
Michael Neuling | 4700dfa | 2012-11-02 17:21:28 +1100 | [diff] [blame] | 374 | /* No guest interrupts come through here */ \ |
| 375 | SET_SCRATCH0(r13); /* save r13 */ \ |
| 376 | EXCEPTION_RELON_PROLOG_PSERIES(PACA_EXGEN, label##_common, \ |
| 377 | EXC_HV, KVMTEST, vec) |
| 378 | |
Paul Mackerras | 1707dd1 | 2013-02-04 18:10:15 +0000 | [diff] [blame] | 379 | #define STD_RELON_EXCEPTION_HV_OOL(vec, label) \ |
| 380 | .globl label##_relon_hv; \ |
| 381 | label##_relon_hv: \ |
| 382 | EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST, vec); \ |
| 383 | EXCEPTION_RELON_PROLOG_PSERIES_1(label##_common, EXC_HV) |
| 384 | |
Benjamin Herrenschmidt | 7230c56 | 2012-03-06 18:27:59 +1100 | [diff] [blame] | 385 | /* This associate vector numbers with bits in paca->irq_happened */ |
| 386 | #define SOFTEN_VALUE_0x500 PACA_IRQ_EE |
| 387 | #define SOFTEN_VALUE_0x502 PACA_IRQ_EE |
| 388 | #define SOFTEN_VALUE_0x900 PACA_IRQ_DEC |
| 389 | #define SOFTEN_VALUE_0x982 PACA_IRQ_DEC |
Ian Munsie | 1dbdafe | 2012-11-14 18:49:46 +0000 | [diff] [blame] | 390 | #define SOFTEN_VALUE_0xa00 PACA_IRQ_DBELL |
Ian Munsie | 655bb3f | 2012-11-14 18:49:45 +0000 | [diff] [blame] | 391 | #define SOFTEN_VALUE_0xe80 PACA_IRQ_DBELL |
| 392 | #define SOFTEN_VALUE_0xe82 PACA_IRQ_DBELL |
Benjamin Herrenschmidt | 7230c56 | 2012-03-06 18:27:59 +1100 | [diff] [blame] | 393 | |
| 394 | #define __SOFTEN_TEST(h, vec) \ |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 395 | lbz r10,PACASOFTIRQEN(r13); \ |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 396 | cmpwi r10,0; \ |
Benjamin Herrenschmidt | 7230c56 | 2012-03-06 18:27:59 +1100 | [diff] [blame] | 397 | li r10,SOFTEN_VALUE_##vec; \ |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 398 | beq masked_##h##interrupt |
Benjamin Herrenschmidt | 7230c56 | 2012-03-06 18:27:59 +1100 | [diff] [blame] | 399 | #define _SOFTEN_TEST(h, vec) __SOFTEN_TEST(h, vec) |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 400 | |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 401 | #define SOFTEN_TEST_PR(vec) \ |
| 402 | KVMTEST_PR(vec); \ |
Benjamin Herrenschmidt | 7230c56 | 2012-03-06 18:27:59 +1100 | [diff] [blame] | 403 | _SOFTEN_TEST(EXC_STD, vec) |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 404 | |
| 405 | #define SOFTEN_TEST_HV(vec) \ |
| 406 | KVMTEST(vec); \ |
Benjamin Herrenschmidt | 7230c56 | 2012-03-06 18:27:59 +1100 | [diff] [blame] | 407 | _SOFTEN_TEST(EXC_HV, vec) |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 408 | |
Paul Mackerras | 9e368f2 | 2011-06-29 00:40:08 +0000 | [diff] [blame] | 409 | #define SOFTEN_TEST_HV_201(vec) \ |
| 410 | KVMTEST(vec); \ |
Benjamin Herrenschmidt | 7230c56 | 2012-03-06 18:27:59 +1100 | [diff] [blame] | 411 | _SOFTEN_TEST(EXC_STD, vec) |
Paul Mackerras | 9e368f2 | 2011-06-29 00:40:08 +0000 | [diff] [blame] | 412 | |
Michael Neuling | 4700dfa | 2012-11-02 17:21:28 +1100 | [diff] [blame] | 413 | #define SOFTEN_NOTEST_PR(vec) _SOFTEN_TEST(EXC_STD, vec) |
| 414 | #define SOFTEN_NOTEST_HV(vec) _SOFTEN_TEST(EXC_HV, vec) |
| 415 | |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 416 | #define __MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra) \ |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 417 | SET_SCRATCH0(r13); /* save r13 */ \ |
Paul Mackerras | 1707dd1 | 2013-02-04 18:10:15 +0000 | [diff] [blame] | 418 | EXCEPTION_PROLOG_0(PACA_EXGEN); \ |
| 419 | __EXCEPTION_PROLOG_1(PACA_EXGEN, extra, vec); \ |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 420 | EXCEPTION_PROLOG_PSERIES_1(label##_common, h); |
Paul Mackerras | 1707dd1 | 2013-02-04 18:10:15 +0000 | [diff] [blame] | 421 | |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 422 | #define _MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra) \ |
| 423 | __MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra) |
Benjamin Herrenschmidt | b3e6b5d | 2011-04-05 14:27:11 +1000 | [diff] [blame] | 424 | |
| 425 | #define MASKABLE_EXCEPTION_PSERIES(loc, vec, label) \ |
| 426 | . = loc; \ |
| 427 | .globl label##_pSeries; \ |
| 428 | label##_pSeries: \ |
Paul Mackerras | a485c70 | 2013-04-25 17:51:40 +0000 | [diff] [blame] | 429 | HMT_MEDIUM_PPR_DISCARD; \ |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 430 | _MASKABLE_EXCEPTION_PSERIES(vec, label, \ |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 431 | EXC_STD, SOFTEN_TEST_PR) |
Benjamin Herrenschmidt | b3e6b5d | 2011-04-05 14:27:11 +1000 | [diff] [blame] | 432 | |
| 433 | #define MASKABLE_EXCEPTION_HV(loc, vec, label) \ |
| 434 | . = loc; \ |
| 435 | .globl label##_hv; \ |
| 436 | label##_hv: \ |
Paul Mackerras | b01c8b5 | 2011-06-29 00:18:26 +0000 | [diff] [blame] | 437 | _MASKABLE_EXCEPTION_PSERIES(vec, label, \ |
| 438 | EXC_HV, SOFTEN_TEST_HV) |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 439 | |
Paul Mackerras | 1707dd1 | 2013-02-04 18:10:15 +0000 | [diff] [blame] | 440 | #define MASKABLE_EXCEPTION_HV_OOL(vec, label) \ |
| 441 | .globl label##_hv; \ |
| 442 | label##_hv: \ |
| 443 | EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_TEST_HV, vec); \ |
| 444 | EXCEPTION_PROLOG_PSERIES_1(label##_common, EXC_HV); |
| 445 | |
Michael Neuling | 4700dfa | 2012-11-02 17:21:28 +1100 | [diff] [blame] | 446 | #define __MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, h, extra) \ |
Haren Myneni | 44e9309 | 2012-12-06 21:51:04 +0000 | [diff] [blame] | 447 | HMT_MEDIUM_PPR_DISCARD; \ |
Michael Neuling | 4700dfa | 2012-11-02 17:21:28 +1100 | [diff] [blame] | 448 | SET_SCRATCH0(r13); /* save r13 */ \ |
Paul Mackerras | 1707dd1 | 2013-02-04 18:10:15 +0000 | [diff] [blame] | 449 | EXCEPTION_PROLOG_0(PACA_EXGEN); \ |
Michael Neuling | 4700dfa | 2012-11-02 17:21:28 +1100 | [diff] [blame] | 450 | __EXCEPTION_PROLOG_1(PACA_EXGEN, extra, vec); \ |
| 451 | EXCEPTION_RELON_PROLOG_PSERIES_1(label##_common, h); |
| 452 | #define _MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, h, extra) \ |
| 453 | __MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, h, extra) |
| 454 | |
| 455 | #define MASKABLE_RELON_EXCEPTION_PSERIES(loc, vec, label) \ |
| 456 | . = loc; \ |
| 457 | .globl label##_relon_pSeries; \ |
| 458 | label##_relon_pSeries: \ |
| 459 | _MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, \ |
| 460 | EXC_STD, SOFTEN_NOTEST_PR) |
| 461 | |
| 462 | #define MASKABLE_RELON_EXCEPTION_HV(loc, vec, label) \ |
| 463 | . = loc; \ |
| 464 | .globl label##_relon_hv; \ |
| 465 | label##_relon_hv: \ |
| 466 | _MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, \ |
| 467 | EXC_HV, SOFTEN_NOTEST_HV) |
| 468 | |
Paul Mackerras | 1707dd1 | 2013-02-04 18:10:15 +0000 | [diff] [blame] | 469 | #define MASKABLE_RELON_EXCEPTION_HV_OOL(vec, label) \ |
| 470 | .globl label##_relon_hv; \ |
| 471 | label##_relon_hv: \ |
| 472 | EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_NOTEST_HV, vec); \ |
| 473 | EXCEPTION_PROLOG_PSERIES_1(label##_common, EXC_HV); |
| 474 | |
Benjamin Herrenschmidt | 1b70117 | 2012-03-01 15:42:56 +1100 | [diff] [blame] | 475 | /* |
| 476 | * Our exception common code can be passed various "additions" |
| 477 | * to specify the behaviour of interrupts, whether to kick the |
| 478 | * runlatch, etc... |
| 479 | */ |
| 480 | |
| 481 | /* Exception addition: Hard disable interrupts */ |
Benjamin Herrenschmidt | 7230c56 | 2012-03-06 18:27:59 +1100 | [diff] [blame] | 482 | #define DISABLE_INTS SOFT_DISABLE_INTS(r10,r11) |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 483 | |
Benjamin Herrenschmidt | fe1952f | 2012-03-01 12:45:27 +1100 | [diff] [blame] | 484 | #define ADD_NVGPRS \ |
| 485 | bl .save_nvgprs |
| 486 | |
| 487 | #define RUNLATCH_ON \ |
| 488 | BEGIN_FTR_SECTION \ |
Stuart Yoder | 9778b69 | 2012-07-05 04:41:35 +0000 | [diff] [blame] | 489 | CURRENT_THREAD_INFO(r3, r1); \ |
Benjamin Herrenschmidt | fe1952f | 2012-03-01 12:45:27 +1100 | [diff] [blame] | 490 | ld r4,TI_LOCAL_FLAGS(r3); \ |
| 491 | andi. r0,r4,_TLF_RUNLATCH; \ |
| 492 | beql ppc64_runlatch_on_trampoline; \ |
| 493 | END_FTR_SECTION_IFSET(CPU_FTR_CTRL) |
| 494 | |
| 495 | #define EXCEPTION_COMMON(trap, label, hdlr, ret, additions) \ |
| 496 | .align 7; \ |
| 497 | .globl label##_common; \ |
| 498 | label##_common: \ |
| 499 | EXCEPTION_PROLOG_COMMON(trap, PACA_EXGEN); \ |
| 500 | additions; \ |
| 501 | addi r3,r1,STACK_FRAME_OVERHEAD; \ |
| 502 | bl hdlr; \ |
| 503 | b ret |
| 504 | |
| 505 | #define STD_EXCEPTION_COMMON(trap, label, hdlr) \ |
| 506 | EXCEPTION_COMMON(trap, label, hdlr, ret_from_except, \ |
| 507 | ADD_NVGPRS;DISABLE_INTS) |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 508 | |
| 509 | /* |
| 510 | * Like STD_EXCEPTION_COMMON, but for exceptions that can occur |
Benjamin Herrenschmidt | 7450f6f | 2012-03-01 10:52:01 +1100 | [diff] [blame] | 511 | * in the idle task and therefore need the special idle handling |
| 512 | * (finish nap and runlatch) |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 513 | */ |
Benjamin Herrenschmidt | fe1952f | 2012-03-01 12:45:27 +1100 | [diff] [blame] | 514 | #define STD_EXCEPTION_COMMON_ASYNC(trap, label, hdlr) \ |
| 515 | EXCEPTION_COMMON(trap, label, hdlr, ret_from_except_lite, \ |
Michael Ellerman | 0e37739 | 2013-06-13 21:04:56 +1000 | [diff] [blame] | 516 | FINISH_NAP;DISABLE_INTS;RUNLATCH_ON) |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 517 | |
| 518 | /* |
| 519 | * When the idle code in power4_idle puts the CPU into NAP mode, |
| 520 | * it has to do so in a loop, and relies on the external interrupt |
| 521 | * and decrementer interrupt entry code to get it out of the loop. |
| 522 | * It sets the _TLF_NAPPING bit in current_thread_info()->local_flags |
| 523 | * to signal that it is in the loop and needs help to get out. |
| 524 | */ |
| 525 | #ifdef CONFIG_PPC_970_NAP |
| 526 | #define FINISH_NAP \ |
| 527 | BEGIN_FTR_SECTION \ |
Stuart Yoder | 9778b69 | 2012-07-05 04:41:35 +0000 | [diff] [blame] | 528 | CURRENT_THREAD_INFO(r11, r1); \ |
Stephen Rothwell | f9ff0f3 | 2007-08-22 13:46:44 +1000 | [diff] [blame] | 529 | ld r9,TI_LOCAL_FLAGS(r11); \ |
| 530 | andi. r10,r9,_TLF_NAPPING; \ |
| 531 | bnel power4_fixup_nap; \ |
| 532 | END_FTR_SECTION_IFSET(CPU_FTR_CAN_NAP) |
| 533 | #else |
| 534 | #define FINISH_NAP |
| 535 | #endif |
| 536 | |
| 537 | #endif /* _ASM_POWERPC_EXCEPTION_H */ |