diff options
Diffstat (limited to 'arch/ppc/kernel/head_booke.h')
| -rw-r--r-- | arch/ppc/kernel/head_booke.h | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/arch/ppc/kernel/head_booke.h b/arch/ppc/kernel/head_booke.h index f3d274c6b231..166d597b6db2 100644 --- a/arch/ppc/kernel/head_booke.h +++ b/arch/ppc/kernel/head_booke.h | |||
| @@ -212,60 +212,6 @@ label: | |||
| 212 | * save (and later restore) the MSR via SPRN_CSRR1, which will still have | 212 | * save (and later restore) the MSR via SPRN_CSRR1, which will still have |
| 213 | * the MSR_DE bit set. | 213 | * the MSR_DE bit set. |
| 214 | */ | 214 | */ |
| 215 | #ifdef CONFIG_E200 | ||
| 216 | #define DEBUG_EXCEPTION \ | ||
| 217 | START_EXCEPTION(Debug); \ | ||
| 218 | DEBUG_EXCEPTION_PROLOG; \ | ||
| 219 | \ | ||
| 220 | /* \ | ||
| 221 | * If there is a single step or branch-taken exception in an \ | ||
| 222 | * exception entry sequence, it was probably meant to apply to \ | ||
| 223 | * the code where the exception occurred (since exception entry \ | ||
| 224 | * doesn't turn off DE automatically). We simulate the effect \ | ||
| 225 | * of turning off DE on entry to an exception handler by turning \ | ||
| 226 | * off DE in the CSRR1 value and clearing the debug status. \ | ||
| 227 | */ \ | ||
| 228 | mfspr r10,SPRN_DBSR; /* check single-step/branch taken */ \ | ||
| 229 | andis. r10,r10,DBSR_IC@h; \ | ||
| 230 | beq+ 2f; \ | ||
| 231 | \ | ||
| 232 | lis r10,KERNELBASE@h; /* check if exception in vectors */ \ | ||
| 233 | ori r10,r10,KERNELBASE@l; \ | ||
| 234 | cmplw r12,r10; \ | ||
| 235 | blt+ 2f; /* addr below exception vectors */ \ | ||
| 236 | \ | ||
| 237 | lis r10,Debug@h; \ | ||
| 238 | ori r10,r10,Debug@l; \ | ||
| 239 | cmplw r12,r10; \ | ||
| 240 | bgt+ 2f; /* addr above exception vectors */ \ | ||
| 241 | \ | ||
| 242 | /* here it looks like we got an inappropriate debug exception. */ \ | ||
| 243 | 1: rlwinm r9,r9,0,~MSR_DE; /* clear DE in the CDRR1 value */ \ | ||
| 244 | lis r10,DBSR_IC@h; /* clear the IC event */ \ | ||
| 245 | mtspr SPRN_DBSR,r10; \ | ||
| 246 | /* restore state and get out */ \ | ||
| 247 | lwz r10,_CCR(r11); \ | ||
| 248 | lwz r0,GPR0(r11); \ | ||
| 249 | lwz r1,GPR1(r11); \ | ||
| 250 | mtcrf 0x80,r10; \ | ||
| 251 | mtspr SPRN_DSRR0,r12; \ | ||
| 252 | mtspr SPRN_DSRR1,r9; \ | ||
| 253 | lwz r9,GPR9(r11); \ | ||
| 254 | lwz r12,GPR12(r11); \ | ||
| 255 | mtspr DEBUG_SPRG,r8; \ | ||
| 256 | BOOKE_LOAD_EXC_LEVEL_STACK(DEBUG); /* r8 points to the debug stack */ \ | ||
| 257 | lwz r10,GPR10-INT_FRAME_SIZE(r8); \ | ||
| 258 | lwz r11,GPR11-INT_FRAME_SIZE(r8); \ | ||
| 259 | mfspr r8,DEBUG_SPRG; \ | ||
| 260 | \ | ||
| 261 | RFDI; \ | ||
| 262 | b .; \ | ||
| 263 | \ | ||
| 264 | /* continue normal handling for a critical exception... */ \ | ||
| 265 | 2: mfspr r4,SPRN_DBSR; \ | ||
| 266 | addi r3,r1,STACK_FRAME_OVERHEAD; \ | ||
| 267 | EXC_XFER_TEMPLATE(DebugException, 0x2002, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), NOCOPY, debug_transfer_to_handler, ret_from_debug_exc) | ||
| 268 | #else | ||
| 269 | #define DEBUG_EXCEPTION \ | 215 | #define DEBUG_EXCEPTION \ |
| 270 | START_EXCEPTION(Debug); \ | 216 | START_EXCEPTION(Debug); \ |
| 271 | CRITICAL_EXCEPTION_PROLOG; \ | 217 | CRITICAL_EXCEPTION_PROLOG; \ |
| @@ -318,7 +264,6 @@ label: | |||
| 318 | 2: mfspr r4,SPRN_DBSR; \ | 264 | 2: mfspr r4,SPRN_DBSR; \ |
| 319 | addi r3,r1,STACK_FRAME_OVERHEAD; \ | 265 | addi r3,r1,STACK_FRAME_OVERHEAD; \ |
| 320 | EXC_XFER_TEMPLATE(DebugException, 0x2002, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), NOCOPY, crit_transfer_to_handler, ret_from_crit_exc) | 266 | EXC_XFER_TEMPLATE(DebugException, 0x2002, (MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE)), NOCOPY, crit_transfer_to_handler, ret_from_crit_exc) |
| 321 | #endif | ||
| 322 | 267 | ||
| 323 | #define INSTRUCTION_STORAGE_EXCEPTION \ | 268 | #define INSTRUCTION_STORAGE_EXCEPTION \ |
| 324 | START_EXCEPTION(InstructionStorage) \ | 269 | START_EXCEPTION(InstructionStorage) \ |