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authorStephen Rothwell <sfr@canb.auug.org.au>2005-10-01 04:43:42 -0400
committerStephen Rothwell <sfr@canb.auug.org.au>2005-10-01 04:43:42 -0400
commitdc1c1ca3dcd94c545c5e01d7c06b46824d43f4d0 (patch)
treefa088ac3eae8709dd379deda6f31d5b29197d4c9 /arch/powerpc/kernel
parentd96024c688b59d4d1e60dbb0e226964eb758aa01 (diff)
powerpc: merge idle_power4.S and trapc.s
Use idle_power4.S from ppc64 as we are not going to support 32 bit power4 in the merged tree. Merge ppc64 traps.c into powerpc traps.c: use ppc64 versions of exception routine names (as they don't have StudlyCaps) make all the versions if die() have the same prototype Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Diffstat (limited to 'arch/powerpc/kernel')
-rw-r--r--arch/powerpc/kernel/head.S84
-rw-r--r--arch/powerpc/kernel/head_44x.S14
-rw-r--r--arch/powerpc/kernel/head_4xx.S52
-rw-r--r--arch/powerpc/kernel/head_8xx.S42
-rw-r--r--arch/powerpc/kernel/head_fsl_booke.S24
-rw-r--r--arch/powerpc/kernel/idle_power4.S78
-rw-r--r--arch/powerpc/kernel/ppc_ksyms.c16
-rw-r--r--arch/powerpc/kernel/traps.c407
8 files changed, 499 insertions, 218 deletions
diff --git a/arch/powerpc/kernel/head.S b/arch/powerpc/kernel/head.S
index 8cdac7385e7f..2c3a1d34e3c7 100644
--- a/arch/powerpc/kernel/head.S
+++ b/arch/powerpc/kernel/head.S
@@ -349,12 +349,12 @@ i##n: \
349 349
350/* System reset */ 350/* System reset */
351/* core99 pmac starts the seconary here by changing the vector, and 351/* core99 pmac starts the seconary here by changing the vector, and
352 putting it back to what it was (UnknownException) when done. */ 352 putting it back to what it was (unknown_exception) when done. */
353#if defined(CONFIG_GEMINI) && defined(CONFIG_SMP) 353#if defined(CONFIG_GEMINI) && defined(CONFIG_SMP)
354 . = 0x100 354 . = 0x100
355 b __secondary_start_gemini 355 b __secondary_start_gemini
356#else 356#else
357 EXCEPTION(0x100, Reset, UnknownException, EXC_XFER_STD) 357 EXCEPTION(0x100, Reset, unknown_exception, EXC_XFER_STD)
358#endif 358#endif
359 359
360/* Machine check */ 360/* Machine check */
@@ -389,7 +389,7 @@ i##n: \
389 cmpwi cr1,r4,0 389 cmpwi cr1,r4,0
390 bne cr1,1f 390 bne cr1,1f
391#endif 391#endif
392 EXC_XFER_STD(0x200, MachineCheckException) 392 EXC_XFER_STD(0x200, machine_check_exception)
393#ifdef CONFIG_PPC_CHRP 393#ifdef CONFIG_PPC_CHRP
3941: b machine_check_in_rtas 3941: b machine_check_in_rtas
395#endif 395#endif
@@ -456,10 +456,10 @@ Alignment:
456 mfspr r5,SPRN_DSISR 456 mfspr r5,SPRN_DSISR
457 stw r5,_DSISR(r11) 457 stw r5,_DSISR(r11)
458 addi r3,r1,STACK_FRAME_OVERHEAD 458 addi r3,r1,STACK_FRAME_OVERHEAD
459 EXC_XFER_EE(0x600, AlignmentException) 459 EXC_XFER_EE(0x600, alignment_exception)
460 460
461/* Program check exception */ 461/* Program check exception */
462 EXCEPTION(0x700, ProgramCheck, ProgramCheckException, EXC_XFER_STD) 462 EXCEPTION(0x700, ProgramCheck, program_check_exception, EXC_XFER_STD)
463 463
464/* Floating-point unavailable */ 464/* Floating-point unavailable */
465 . = 0x800 465 . = 0x800
@@ -472,8 +472,8 @@ FPUnavailable:
472/* Decrementer */ 472/* Decrementer */
473 EXCEPTION(0x900, Decrementer, timer_interrupt, EXC_XFER_LITE) 473 EXCEPTION(0x900, Decrementer, timer_interrupt, EXC_XFER_LITE)
474 474
475 EXCEPTION(0xa00, Trap_0a, UnknownException, EXC_XFER_EE) 475 EXCEPTION(0xa00, Trap_0a, unknown_exception, EXC_XFER_EE)
476 EXCEPTION(0xb00, Trap_0b, UnknownException, EXC_XFER_EE) 476 EXCEPTION(0xb00, Trap_0b, unknown_exception, EXC_XFER_EE)
477 477
478/* System call */ 478/* System call */
479 . = 0xc00 479 . = 0xc00
@@ -482,8 +482,8 @@ SystemCall:
482 EXC_XFER_EE_LITE(0xc00, DoSyscall) 482 EXC_XFER_EE_LITE(0xc00, DoSyscall)
483 483
484/* Single step - not used on 601 */ 484/* Single step - not used on 601 */
485 EXCEPTION(0xd00, SingleStep, SingleStepException, EXC_XFER_STD) 485 EXCEPTION(0xd00, SingleStep, single_step_exception, EXC_XFER_STD)
486 EXCEPTION(0xe00, Trap_0e, UnknownException, EXC_XFER_EE) 486 EXCEPTION(0xe00, Trap_0e, unknown_exception, EXC_XFER_EE)
487 487
488/* 488/*
489 * The Altivec unavailable trap is at 0x0f20. Foo. 489 * The Altivec unavailable trap is at 0x0f20. Foo.
@@ -502,7 +502,7 @@ SystemCall:
502Trap_0f: 502Trap_0f:
503 EXCEPTION_PROLOG 503 EXCEPTION_PROLOG
504 addi r3,r1,STACK_FRAME_OVERHEAD 504 addi r3,r1,STACK_FRAME_OVERHEAD
505 EXC_XFER_EE(0xf00, UnknownException) 505 EXC_XFER_EE(0xf00, unknown_exception)
506 506
507/* 507/*
508 * Handle TLB miss for instruction on 603/603e. 508 * Handle TLB miss for instruction on 603/603e.
@@ -702,44 +702,44 @@ DataStoreTLBMiss:
702 rfi 702 rfi
703 703
704#ifndef CONFIG_ALTIVEC 704#ifndef CONFIG_ALTIVEC
705#define AltivecAssistException UnknownException 705#define altivec_assist_exception unknown_exception
706#endif 706#endif
707 707
708 EXCEPTION(0x1300, Trap_13, InstructionBreakpoint, EXC_XFER_EE) 708 EXCEPTION(0x1300, Trap_13, instruction_breakpoint_exception, EXC_XFER_EE)
709 EXCEPTION(0x1400, SMI, SMIException, EXC_XFER_EE) 709 EXCEPTION(0x1400, SMI, SMIException, EXC_XFER_EE)
710 EXCEPTION(0x1500, Trap_15, UnknownException, EXC_XFER_EE) 710 EXCEPTION(0x1500, Trap_15, unknown_exception, EXC_XFER_EE)
711#ifdef CONFIG_POWER4 711#ifdef CONFIG_POWER4
712 EXCEPTION(0x1600, Trap_16, UnknownException, EXC_XFER_EE) 712 EXCEPTION(0x1600, Trap_16, unknown_exception, EXC_XFER_EE)
713 EXCEPTION(0x1700, Trap_17, AltivecAssistException, EXC_XFER_EE) 713 EXCEPTION(0x1700, Trap_17, altivec_assist_exception, EXC_XFER_EE)
714 EXCEPTION(0x1800, Trap_18, TAUException, EXC_XFER_STD) 714 EXCEPTION(0x1800, Trap_18, TAUException, EXC_XFER_STD)
715#else /* !CONFIG_POWER4 */ 715#else /* !CONFIG_POWER4 */
716 EXCEPTION(0x1600, Trap_16, AltivecAssistException, EXC_XFER_EE) 716 EXCEPTION(0x1600, Trap_16, altivec_assist_exception, EXC_XFER_EE)
717 EXCEPTION(0x1700, Trap_17, TAUException, EXC_XFER_STD) 717 EXCEPTION(0x1700, Trap_17, TAUException, EXC_XFER_STD)
718 EXCEPTION(0x1800, Trap_18, UnknownException, EXC_XFER_EE) 718 EXCEPTION(0x1800, Trap_18, unknown_exception, EXC_XFER_EE)
719#endif /* CONFIG_POWER4 */ 719#endif /* CONFIG_POWER4 */
720 EXCEPTION(0x1900, Trap_19, UnknownException, EXC_XFER_EE) 720 EXCEPTION(0x1900, Trap_19, unknown_exception, EXC_XFER_EE)
721 EXCEPTION(0x1a00, Trap_1a, UnknownException, EXC_XFER_EE) 721 EXCEPTION(0x1a00, Trap_1a, unknown_exception, EXC_XFER_EE)
722 EXCEPTION(0x1b00, Trap_1b, UnknownException, EXC_XFER_EE) 722 EXCEPTION(0x1b00, Trap_1b, unknown_exception, EXC_XFER_EE)
723 EXCEPTION(0x1c00, Trap_1c, UnknownException, EXC_XFER_EE) 723 EXCEPTION(0x1c00, Trap_1c, unknown_exception, EXC_XFER_EE)
724 EXCEPTION(0x1d00, Trap_1d, UnknownException, EXC_XFER_EE) 724 EXCEPTION(0x1d00, Trap_1d, unknown_exception, EXC_XFER_EE)
725 EXCEPTION(0x1e00, Trap_1e, UnknownException, EXC_XFER_EE) 725 EXCEPTION(0x1e00, Trap_1e, unknown_exception, EXC_XFER_EE)
726 EXCEPTION(0x1f00, Trap_1f, UnknownException, EXC_XFER_EE) 726 EXCEPTION(0x1f00, Trap_1f, unknown_exception, EXC_XFER_EE)
727 EXCEPTION(0x2000, RunMode, RunModeException, EXC_XFER_EE) 727 EXCEPTION(0x2000, RunMode, RunModeException, EXC_XFER_EE)
728 EXCEPTION(0x2100, Trap_21, UnknownException, EXC_XFER_EE) 728 EXCEPTION(0x2100, Trap_21, unknown_exception, EXC_XFER_EE)
729 EXCEPTION(0x2200, Trap_22, UnknownException, EXC_XFER_EE) 729 EXCEPTION(0x2200, Trap_22, unknown_exception, EXC_XFER_EE)
730 EXCEPTION(0x2300, Trap_23, UnknownException, EXC_XFER_EE) 730 EXCEPTION(0x2300, Trap_23, unknown_exception, EXC_XFER_EE)
731 EXCEPTION(0x2400, Trap_24, UnknownException, EXC_XFER_EE) 731 EXCEPTION(0x2400, Trap_24, unknown_exception, EXC_XFER_EE)
732 EXCEPTION(0x2500, Trap_25, UnknownException, EXC_XFER_EE) 732 EXCEPTION(0x2500, Trap_25, unknown_exception, EXC_XFER_EE)
733 EXCEPTION(0x2600, Trap_26, UnknownException, EXC_XFER_EE) 733 EXCEPTION(0x2600, Trap_26, unknown_exception, EXC_XFER_EE)
734 EXCEPTION(0x2700, Trap_27, UnknownException, EXC_XFER_EE) 734 EXCEPTION(0x2700, Trap_27, unknown_exception, EXC_XFER_EE)
735 EXCEPTION(0x2800, Trap_28, UnknownException, EXC_XFER_EE) 735 EXCEPTION(0x2800, Trap_28, unknown_exception, EXC_XFER_EE)
736 EXCEPTION(0x2900, Trap_29, UnknownException, EXC_XFER_EE) 736 EXCEPTION(0x2900, Trap_29, unknown_exception, EXC_XFER_EE)
737 EXCEPTION(0x2a00, Trap_2a, UnknownException, EXC_XFER_EE) 737 EXCEPTION(0x2a00, Trap_2a, unknown_exception, EXC_XFER_EE)
738 EXCEPTION(0x2b00, Trap_2b, UnknownException, EXC_XFER_EE) 738 EXCEPTION(0x2b00, Trap_2b, unknown_exception, EXC_XFER_EE)
739 EXCEPTION(0x2c00, Trap_2c, UnknownException, EXC_XFER_EE) 739 EXCEPTION(0x2c00, Trap_2c, unknown_exception, EXC_XFER_EE)
740 EXCEPTION(0x2d00, Trap_2d, UnknownException, EXC_XFER_EE) 740 EXCEPTION(0x2d00, Trap_2d, unknown_exception, EXC_XFER_EE)
741 EXCEPTION(0x2e00, Trap_2e, UnknownException, EXC_XFER_EE) 741 EXCEPTION(0x2e00, Trap_2e, unknown_exception, EXC_XFER_EE)
742 EXCEPTION(0x2f00, MOLTrampoline, UnknownException, EXC_XFER_EE_LITE) 742 EXCEPTION(0x2f00, MOLTrampoline, unknown_exception, EXC_XFER_EE_LITE)
743 743
744 .globl mol_trampoline 744 .globl mol_trampoline
745 .set mol_trampoline, i0x2f00 745 .set mol_trampoline, i0x2f00
@@ -751,7 +751,7 @@ AltiVecUnavailable:
751#ifdef CONFIG_ALTIVEC 751#ifdef CONFIG_ALTIVEC
752 bne load_up_altivec /* if from user, just load it up */ 752 bne load_up_altivec /* if from user, just load it up */
753#endif /* CONFIG_ALTIVEC */ 753#endif /* CONFIG_ALTIVEC */
754 EXC_XFER_EE_LITE(0xf20, AltivecUnavailException) 754 EXC_XFER_EE_LITE(0xf20, altivec_unavailable_exception)
755 755
756#ifdef CONFIG_PPC64BRIDGE 756#ifdef CONFIG_PPC64BRIDGE
757DataAccess: 757DataAccess:
@@ -767,12 +767,12 @@ DataSegment:
767 addi r3,r1,STACK_FRAME_OVERHEAD 767 addi r3,r1,STACK_FRAME_OVERHEAD
768 mfspr r4,SPRN_DAR 768 mfspr r4,SPRN_DAR
769 stw r4,_DAR(r11) 769 stw r4,_DAR(r11)
770 EXC_XFER_STD(0x380, UnknownException) 770 EXC_XFER_STD(0x380, unknown_exception)
771 771
772InstructionSegment: 772InstructionSegment:
773 EXCEPTION_PROLOG 773 EXCEPTION_PROLOG
774 addi r3,r1,STACK_FRAME_OVERHEAD 774 addi r3,r1,STACK_FRAME_OVERHEAD
775 EXC_XFER_STD(0x480, UnknownException) 775 EXC_XFER_STD(0x480, unknown_exception)
776#endif /* CONFIG_PPC64BRIDGE */ 776#endif /* CONFIG_PPC64BRIDGE */
777 777
778#ifdef CONFIG_ALTIVEC 778#ifdef CONFIG_ALTIVEC
diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S
index 599245b0407e..b1b9dc08abca 100644
--- a/arch/powerpc/kernel/head_44x.S
+++ b/arch/powerpc/kernel/head_44x.S
@@ -309,13 +309,13 @@ skpinv: addi r4,r4,1 /* Increment */
309 309
310interrupt_base: 310interrupt_base:
311 /* Critical Input Interrupt */ 311 /* Critical Input Interrupt */
312 CRITICAL_EXCEPTION(0x0100, CriticalInput, UnknownException) 312 CRITICAL_EXCEPTION(0x0100, CriticalInput, unknown_exception)
313 313
314 /* Machine Check Interrupt */ 314 /* Machine Check Interrupt */
315#ifdef CONFIG_440A 315#ifdef CONFIG_440A
316 MCHECK_EXCEPTION(0x0200, MachineCheck, MachineCheckException) 316 MCHECK_EXCEPTION(0x0200, MachineCheck, machine_check_exception)
317#else 317#else
318 CRITICAL_EXCEPTION(0x0200, MachineCheck, MachineCheckException) 318 CRITICAL_EXCEPTION(0x0200, MachineCheck, machine_check_exception)
319#endif 319#endif
320 320
321 /* Data Storage Interrupt */ 321 /* Data Storage Interrupt */
@@ -442,7 +442,7 @@ interrupt_base:
442#ifdef CONFIG_PPC_FPU 442#ifdef CONFIG_PPC_FPU
443 FP_UNAVAILABLE_EXCEPTION 443 FP_UNAVAILABLE_EXCEPTION
444#else 444#else
445 EXCEPTION(0x2010, FloatingPointUnavailable, UnknownException, EXC_XFER_EE) 445 EXCEPTION(0x2010, FloatingPointUnavailable, unknown_exception, EXC_XFER_EE)
446#endif 446#endif
447 447
448 /* System Call Interrupt */ 448 /* System Call Interrupt */
@@ -451,21 +451,21 @@ interrupt_base:
451 EXC_XFER_EE_LITE(0x0c00, DoSyscall) 451 EXC_XFER_EE_LITE(0x0c00, DoSyscall)
452 452
453 /* Auxillary Processor Unavailable Interrupt */ 453 /* Auxillary Processor Unavailable Interrupt */
454 EXCEPTION(0x2020, AuxillaryProcessorUnavailable, UnknownException, EXC_XFER_EE) 454 EXCEPTION(0x2020, AuxillaryProcessorUnavailable, unknown_exception, EXC_XFER_EE)
455 455
456 /* Decrementer Interrupt */ 456 /* Decrementer Interrupt */
457 DECREMENTER_EXCEPTION 457 DECREMENTER_EXCEPTION
458 458
459 /* Fixed Internal Timer Interrupt */ 459 /* Fixed Internal Timer Interrupt */
460 /* TODO: Add FIT support */ 460 /* TODO: Add FIT support */
461 EXCEPTION(0x1010, FixedIntervalTimer, UnknownException, EXC_XFER_EE) 461 EXCEPTION(0x1010, FixedIntervalTimer, unknown_exception, EXC_XFER_EE)
462 462
463 /* Watchdog Timer Interrupt */ 463 /* Watchdog Timer Interrupt */
464 /* TODO: Add watchdog support */ 464 /* TODO: Add watchdog support */
465#ifdef CONFIG_BOOKE_WDT 465#ifdef CONFIG_BOOKE_WDT
466 CRITICAL_EXCEPTION(0x1020, WatchdogTimer, WatchdogException) 466 CRITICAL_EXCEPTION(0x1020, WatchdogTimer, WatchdogException)
467#else 467#else
468 CRITICAL_EXCEPTION(0x1020, WatchdogTimer, UnknownException) 468 CRITICAL_EXCEPTION(0x1020, WatchdogTimer, unknown_exception)
469#endif 469#endif
470 470
471 /* Data TLB Error Interrupt */ 471 /* Data TLB Error Interrupt */
diff --git a/arch/powerpc/kernel/head_4xx.S b/arch/powerpc/kernel/head_4xx.S
index 8562b807b37c..5772ce97e24e 100644
--- a/arch/powerpc/kernel/head_4xx.S
+++ b/arch/powerpc/kernel/head_4xx.S
@@ -245,12 +245,12 @@ label:
245/* 245/*
246 * 0x0100 - Critical Interrupt Exception 246 * 0x0100 - Critical Interrupt Exception
247 */ 247 */
248 CRITICAL_EXCEPTION(0x0100, CriticalInterrupt, UnknownException) 248 CRITICAL_EXCEPTION(0x0100, CriticalInterrupt, unknown_exception)
249 249
250/* 250/*
251 * 0x0200 - Machine Check Exception 251 * 0x0200 - Machine Check Exception
252 */ 252 */
253 CRITICAL_EXCEPTION(0x0200, MachineCheck, MachineCheckException) 253 CRITICAL_EXCEPTION(0x0200, MachineCheck, machine_check_exception)
254 254
255/* 255/*
256 * 0x0300 - Data Storage Exception 256 * 0x0300 - Data Storage Exception
@@ -405,7 +405,7 @@ label:
405 mfspr r4,SPRN_DEAR /* Grab the DEAR and save it */ 405 mfspr r4,SPRN_DEAR /* Grab the DEAR and save it */
406 stw r4,_DEAR(r11) 406 stw r4,_DEAR(r11)
407 addi r3,r1,STACK_FRAME_OVERHEAD 407 addi r3,r1,STACK_FRAME_OVERHEAD
408 EXC_XFER_EE(0x600, AlignmentException) 408 EXC_XFER_EE(0x600, alignment_exception)
409 409
410/* 0x0700 - Program Exception */ 410/* 0x0700 - Program Exception */
411 START_EXCEPTION(0x0700, ProgramCheck) 411 START_EXCEPTION(0x0700, ProgramCheck)
@@ -413,21 +413,21 @@ label:
413 mfspr r4,SPRN_ESR /* Grab the ESR and save it */ 413 mfspr r4,SPRN_ESR /* Grab the ESR and save it */
414 stw r4,_ESR(r11) 414 stw r4,_ESR(r11)
415 addi r3,r1,STACK_FRAME_OVERHEAD 415 addi r3,r1,STACK_FRAME_OVERHEAD
416 EXC_XFER_STD(0x700, ProgramCheckException) 416 EXC_XFER_STD(0x700, program_check_exception)
417 417
418 EXCEPTION(0x0800, Trap_08, UnknownException, EXC_XFER_EE) 418 EXCEPTION(0x0800, Trap_08, unknown_exception, EXC_XFER_EE)
419 EXCEPTION(0x0900, Trap_09, UnknownException, EXC_XFER_EE) 419 EXCEPTION(0x0900, Trap_09, unknown_exception, EXC_XFER_EE)
420 EXCEPTION(0x0A00, Trap_0A, UnknownException, EXC_XFER_EE) 420 EXCEPTION(0x0A00, Trap_0A, unknown_exception, EXC_XFER_EE)
421 EXCEPTION(0x0B00, Trap_0B, UnknownException, EXC_XFER_EE) 421 EXCEPTION(0x0B00, Trap_0B, unknown_exception, EXC_XFER_EE)
422 422
423/* 0x0C00 - System Call Exception */ 423/* 0x0C00 - System Call Exception */
424 START_EXCEPTION(0x0C00, SystemCall) 424 START_EXCEPTION(0x0C00, SystemCall)
425 NORMAL_EXCEPTION_PROLOG 425 NORMAL_EXCEPTION_PROLOG
426 EXC_XFER_EE_LITE(0xc00, DoSyscall) 426 EXC_XFER_EE_LITE(0xc00, DoSyscall)
427 427
428 EXCEPTION(0x0D00, Trap_0D, UnknownException, EXC_XFER_EE) 428 EXCEPTION(0x0D00, Trap_0D, unknown_exception, EXC_XFER_EE)
429 EXCEPTION(0x0E00, Trap_0E, UnknownException, EXC_XFER_EE) 429 EXCEPTION(0x0E00, Trap_0E, unknown_exception, EXC_XFER_EE)
430 EXCEPTION(0x0F00, Trap_0F, UnknownException, EXC_XFER_EE) 430 EXCEPTION(0x0F00, Trap_0F, unknown_exception, EXC_XFER_EE)
431 431
432/* 0x1000 - Programmable Interval Timer (PIT) Exception */ 432/* 0x1000 - Programmable Interval Timer (PIT) Exception */
433 START_EXCEPTION(0x1000, Decrementer) 433 START_EXCEPTION(0x1000, Decrementer)
@@ -444,14 +444,14 @@ label:
444 444
445/* 0x1010 - Fixed Interval Timer (FIT) Exception 445/* 0x1010 - Fixed Interval Timer (FIT) Exception
446*/ 446*/
447 STND_EXCEPTION(0x1010, FITException, UnknownException) 447 STND_EXCEPTION(0x1010, FITException, unknown_exception)
448 448
449/* 0x1020 - Watchdog Timer (WDT) Exception 449/* 0x1020 - Watchdog Timer (WDT) Exception
450*/ 450*/
451#ifdef CONFIG_BOOKE_WDT 451#ifdef CONFIG_BOOKE_WDT
452 CRITICAL_EXCEPTION(0x1020, WDTException, WatchdogException) 452 CRITICAL_EXCEPTION(0x1020, WDTException, WatchdogException)
453#else 453#else
454 CRITICAL_EXCEPTION(0x1020, WDTException, UnknownException) 454 CRITICAL_EXCEPTION(0x1020, WDTException, unknown_exception)
455#endif 455#endif
456#endif 456#endif
457 457
@@ -656,25 +656,25 @@ label:
656 mfspr r10, SPRN_SPRG0 656 mfspr r10, SPRN_SPRG0
657 b InstructionAccess 657 b InstructionAccess
658 658
659 EXCEPTION(0x1300, Trap_13, UnknownException, EXC_XFER_EE) 659 EXCEPTION(0x1300, Trap_13, unknown_exception, EXC_XFER_EE)
660 EXCEPTION(0x1400, Trap_14, UnknownException, EXC_XFER_EE) 660 EXCEPTION(0x1400, Trap_14, unknown_exception, EXC_XFER_EE)
661 EXCEPTION(0x1500, Trap_15, UnknownException, EXC_XFER_EE) 661 EXCEPTION(0x1500, Trap_15, unknown_exception, EXC_XFER_EE)
662 EXCEPTION(0x1600, Trap_16, UnknownException, EXC_XFER_EE) 662 EXCEPTION(0x1600, Trap_16, unknown_exception, EXC_XFER_EE)
663#ifdef CONFIG_IBM405_ERR51 663#ifdef CONFIG_IBM405_ERR51
664 /* 405GP errata 51 */ 664 /* 405GP errata 51 */
665 START_EXCEPTION(0x1700, Trap_17) 665 START_EXCEPTION(0x1700, Trap_17)
666 b DTLBMiss 666 b DTLBMiss
667#else 667#else
668 EXCEPTION(0x1700, Trap_17, UnknownException, EXC_XFER_EE) 668 EXCEPTION(0x1700, Trap_17, unknown_exception, EXC_XFER_EE)
669#endif 669#endif
670 EXCEPTION(0x1800, Trap_18, UnknownException, EXC_XFER_EE) 670 EXCEPTION(0x1800, Trap_18, unknown_exception, EXC_XFER_EE)
671 EXCEPTION(0x1900, Trap_19, UnknownException, EXC_XFER_EE) 671 EXCEPTION(0x1900, Trap_19, unknown_exception, EXC_XFER_EE)
672 EXCEPTION(0x1A00, Trap_1A, UnknownException, EXC_XFER_EE) 672 EXCEPTION(0x1A00, Trap_1A, unknown_exception, EXC_XFER_EE)
673 EXCEPTION(0x1B00, Trap_1B, UnknownException, EXC_XFER_EE) 673 EXCEPTION(0x1B00, Trap_1B, unknown_exception, EXC_XFER_EE)
674 EXCEPTION(0x1C00, Trap_1C, UnknownException, EXC_XFER_EE) 674 EXCEPTION(0x1C00, Trap_1C, unknown_exception, EXC_XFER_EE)
675 EXCEPTION(0x1D00, Trap_1D, UnknownException, EXC_XFER_EE) 675 EXCEPTION(0x1D00, Trap_1D, unknown_exception, EXC_XFER_EE)
676 EXCEPTION(0x1E00, Trap_1E, UnknownException, EXC_XFER_EE) 676 EXCEPTION(0x1E00, Trap_1E, unknown_exception, EXC_XFER_EE)
677 EXCEPTION(0x1F00, Trap_1F, UnknownException, EXC_XFER_EE) 677 EXCEPTION(0x1F00, Trap_1F, unknown_exception, EXC_XFER_EE)
678 678
679/* Check for a single step debug exception while in an exception 679/* Check for a single step debug exception while in an exception
680 * handler before state has been saved. This is to catch the case 680 * handler before state has been saved. This is to catch the case
diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S
index cb1a3a54a026..de0978742221 100644
--- a/arch/powerpc/kernel/head_8xx.S
+++ b/arch/powerpc/kernel/head_8xx.S
@@ -203,7 +203,7 @@ i##n: \
203 ret_from_except) 203 ret_from_except)
204 204
205/* System reset */ 205/* System reset */
206 EXCEPTION(0x100, Reset, UnknownException, EXC_XFER_STD) 206 EXCEPTION(0x100, Reset, unknown_exception, EXC_XFER_STD)
207 207
208/* Machine check */ 208/* Machine check */
209 . = 0x200 209 . = 0x200
@@ -214,7 +214,7 @@ MachineCheck:
214 mfspr r5,SPRN_DSISR 214 mfspr r5,SPRN_DSISR
215 stw r5,_DSISR(r11) 215 stw r5,_DSISR(r11)
216 addi r3,r1,STACK_FRAME_OVERHEAD 216 addi r3,r1,STACK_FRAME_OVERHEAD
217 EXC_XFER_STD(0x200, MachineCheckException) 217 EXC_XFER_STD(0x200, machine_check_exception)
218 218
219/* Data access exception. 219/* Data access exception.
220 * This is "never generated" by the MPC8xx. We jump to it for other 220 * This is "never generated" by the MPC8xx. We jump to it for other
@@ -252,20 +252,20 @@ Alignment:
252 mfspr r5,SPRN_DSISR 252 mfspr r5,SPRN_DSISR
253 stw r5,_DSISR(r11) 253 stw r5,_DSISR(r11)
254 addi r3,r1,STACK_FRAME_OVERHEAD 254 addi r3,r1,STACK_FRAME_OVERHEAD
255 EXC_XFER_EE(0x600, AlignmentException) 255 EXC_XFER_EE(0x600, alignment_exception)
256 256
257/* Program check exception */ 257/* Program check exception */
258 EXCEPTION(0x700, ProgramCheck, ProgramCheckException, EXC_XFER_STD) 258 EXCEPTION(0x700, ProgramCheck, program_check_exception, EXC_XFER_STD)
259 259
260/* No FPU on MPC8xx. This exception is not supposed to happen. 260/* No FPU on MPC8xx. This exception is not supposed to happen.
261*/ 261*/
262 EXCEPTION(0x800, FPUnavailable, UnknownException, EXC_XFER_STD) 262 EXCEPTION(0x800, FPUnavailable, unknown_exception, EXC_XFER_STD)
263 263
264/* Decrementer */ 264/* Decrementer */
265 EXCEPTION(0x900, Decrementer, timer_interrupt, EXC_XFER_LITE) 265 EXCEPTION(0x900, Decrementer, timer_interrupt, EXC_XFER_LITE)
266 266
267 EXCEPTION(0xa00, Trap_0a, UnknownException, EXC_XFER_EE) 267 EXCEPTION(0xa00, Trap_0a, unknown_exception, EXC_XFER_EE)
268 EXCEPTION(0xb00, Trap_0b, UnknownException, EXC_XFER_EE) 268 EXCEPTION(0xb00, Trap_0b, unknown_exception, EXC_XFER_EE)
269 269
270/* System call */ 270/* System call */
271 . = 0xc00 271 . = 0xc00
@@ -274,9 +274,9 @@ SystemCall:
274 EXC_XFER_EE_LITE(0xc00, DoSyscall) 274 EXC_XFER_EE_LITE(0xc00, DoSyscall)
275 275
276/* Single step - not used on 601 */ 276/* Single step - not used on 601 */
277 EXCEPTION(0xd00, SingleStep, SingleStepException, EXC_XFER_STD) 277 EXCEPTION(0xd00, SingleStep, single_step_exception, EXC_XFER_STD)
278 EXCEPTION(0xe00, Trap_0e, UnknownException, EXC_XFER_EE) 278 EXCEPTION(0xe00, Trap_0e, unknown_exception, EXC_XFER_EE)
279 EXCEPTION(0xf00, Trap_0f, UnknownException, EXC_XFER_EE) 279 EXCEPTION(0xf00, Trap_0f, unknown_exception, EXC_XFER_EE)
280 280
281/* On the MPC8xx, this is a software emulation interrupt. It occurs 281/* On the MPC8xx, this is a software emulation interrupt. It occurs
282 * for all unimplemented and illegal instructions. 282 * for all unimplemented and illegal instructions.
@@ -540,22 +540,22 @@ DataTLBError:
540#endif 540#endif
541 b DataAccess 541 b DataAccess
542 542
543 EXCEPTION(0x1500, Trap_15, UnknownException, EXC_XFER_EE) 543 EXCEPTION(0x1500, Trap_15, unknown_exception, EXC_XFER_EE)
544 EXCEPTION(0x1600, Trap_16, UnknownException, EXC_XFER_EE) 544 EXCEPTION(0x1600, Trap_16, unknown_exception, EXC_XFER_EE)
545 EXCEPTION(0x1700, Trap_17, UnknownException, EXC_XFER_EE) 545 EXCEPTION(0x1700, Trap_17, unknown_exception, EXC_XFER_EE)
546 EXCEPTION(0x1800, Trap_18, UnknownException, EXC_XFER_EE) 546 EXCEPTION(0x1800, Trap_18, unknown_exception, EXC_XFER_EE)
547 EXCEPTION(0x1900, Trap_19, UnknownException, EXC_XFER_EE) 547 EXCEPTION(0x1900, Trap_19, unknown_exception, EXC_XFER_EE)
548 EXCEPTION(0x1a00, Trap_1a, UnknownException, EXC_XFER_EE) 548 EXCEPTION(0x1a00, Trap_1a, unknown_exception, EXC_XFER_EE)
549 EXCEPTION(0x1b00, Trap_1b, UnknownException, EXC_XFER_EE) 549 EXCEPTION(0x1b00, Trap_1b, unknown_exception, EXC_XFER_EE)
550 550
551/* On the MPC8xx, these next four traps are used for development 551/* On the MPC8xx, these next four traps are used for development
552 * support of breakpoints and such. Someday I will get around to 552 * support of breakpoints and such. Someday I will get around to
553 * using them. 553 * using them.
554 */ 554 */
555 EXCEPTION(0x1c00, Trap_1c, UnknownException, EXC_XFER_EE) 555 EXCEPTION(0x1c00, Trap_1c, unknown_exception, EXC_XFER_EE)
556 EXCEPTION(0x1d00, Trap_1d, UnknownException, EXC_XFER_EE) 556 EXCEPTION(0x1d00, Trap_1d, unknown_exception, EXC_XFER_EE)
557 EXCEPTION(0x1e00, Trap_1e, UnknownException, EXC_XFER_EE) 557 EXCEPTION(0x1e00, Trap_1e, unknown_exception, EXC_XFER_EE)
558 EXCEPTION(0x1f00, Trap_1f, UnknownException, EXC_XFER_EE) 558 EXCEPTION(0x1f00, Trap_1f, unknown_exception, EXC_XFER_EE)
559 559
560 . = 0x2000 560 . = 0x2000
561 561
diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S
index eba5a5f8ff08..53949811efda 100644
--- a/arch/powerpc/kernel/head_fsl_booke.S
+++ b/arch/powerpc/kernel/head_fsl_booke.S
@@ -426,14 +426,14 @@ skpinv: addi r6,r6,1 /* Increment */
426 426
427interrupt_base: 427interrupt_base:
428 /* Critical Input Interrupt */ 428 /* Critical Input Interrupt */
429 CRITICAL_EXCEPTION(0x0100, CriticalInput, UnknownException) 429 CRITICAL_EXCEPTION(0x0100, CriticalInput, unknown_exception)
430 430
431 /* Machine Check Interrupt */ 431 /* Machine Check Interrupt */
432#ifdef CONFIG_E200 432#ifdef CONFIG_E200
433 /* no RFMCI, MCSRRs on E200 */ 433 /* no RFMCI, MCSRRs on E200 */
434 CRITICAL_EXCEPTION(0x0200, MachineCheck, MachineCheckException) 434 CRITICAL_EXCEPTION(0x0200, MachineCheck, machine_check_exception)
435#else 435#else
436 MCHECK_EXCEPTION(0x0200, MachineCheck, MachineCheckException) 436 MCHECK_EXCEPTION(0x0200, MachineCheck, machine_check_exception)
437#endif 437#endif
438 438
439 /* Data Storage Interrupt */ 439 /* Data Storage Interrupt */
@@ -542,9 +542,9 @@ interrupt_base:
542#else 542#else
543#ifdef CONFIG_E200 543#ifdef CONFIG_E200
544 /* E200 treats 'normal' floating point instructions as FP Unavail exception */ 544 /* E200 treats 'normal' floating point instructions as FP Unavail exception */
545 EXCEPTION(0x0800, FloatingPointUnavailable, ProgramCheckException, EXC_XFER_EE) 545 EXCEPTION(0x0800, FloatingPointUnavailable, program_check_exception, EXC_XFER_EE)
546#else 546#else
547 EXCEPTION(0x0800, FloatingPointUnavailable, UnknownException, EXC_XFER_EE) 547 EXCEPTION(0x0800, FloatingPointUnavailable, unknown_exception, EXC_XFER_EE)
548#endif 548#endif
549#endif 549#endif
550 550
@@ -554,20 +554,20 @@ interrupt_base:
554 EXC_XFER_EE_LITE(0x0c00, DoSyscall) 554 EXC_XFER_EE_LITE(0x0c00, DoSyscall)
555 555
556 /* Auxillary Processor Unavailable Interrupt */ 556 /* Auxillary Processor Unavailable Interrupt */
557 EXCEPTION(0x2900, AuxillaryProcessorUnavailable, UnknownException, EXC_XFER_EE) 557 EXCEPTION(0x2900, AuxillaryProcessorUnavailable, unknown_exception, EXC_XFER_EE)
558 558
559 /* Decrementer Interrupt */ 559 /* Decrementer Interrupt */
560 DECREMENTER_EXCEPTION 560 DECREMENTER_EXCEPTION
561 561
562 /* Fixed Internal Timer Interrupt */ 562 /* Fixed Internal Timer Interrupt */
563 /* TODO: Add FIT support */ 563 /* TODO: Add FIT support */
564 EXCEPTION(0x3100, FixedIntervalTimer, UnknownException, EXC_XFER_EE) 564 EXCEPTION(0x3100, FixedIntervalTimer, unknown_exception, EXC_XFER_EE)
565 565
566 /* Watchdog Timer Interrupt */ 566 /* Watchdog Timer Interrupt */
567#ifdef CONFIG_BOOKE_WDT 567#ifdef CONFIG_BOOKE_WDT
568 CRITICAL_EXCEPTION(0x3200, WatchdogTimer, WatchdogException) 568 CRITICAL_EXCEPTION(0x3200, WatchdogTimer, WatchdogException)
569#else 569#else
570 CRITICAL_EXCEPTION(0x3200, WatchdogTimer, UnknownException) 570 CRITICAL_EXCEPTION(0x3200, WatchdogTimer, unknown_exception)
571#endif 571#endif
572 572
573 /* Data TLB Error Interrupt */ 573 /* Data TLB Error Interrupt */
@@ -696,21 +696,21 @@ interrupt_base:
696 addi r3,r1,STACK_FRAME_OVERHEAD 696 addi r3,r1,STACK_FRAME_OVERHEAD
697 EXC_XFER_EE_LITE(0x2010, KernelSPE) 697 EXC_XFER_EE_LITE(0x2010, KernelSPE)
698#else 698#else
699 EXCEPTION(0x2020, SPEUnavailable, UnknownException, EXC_XFER_EE) 699 EXCEPTION(0x2020, SPEUnavailable, unknown_exception, EXC_XFER_EE)
700#endif /* CONFIG_SPE */ 700#endif /* CONFIG_SPE */
701 701
702 /* SPE Floating Point Data */ 702 /* SPE Floating Point Data */
703#ifdef CONFIG_SPE 703#ifdef CONFIG_SPE
704 EXCEPTION(0x2030, SPEFloatingPointData, SPEFloatingPointException, EXC_XFER_EE); 704 EXCEPTION(0x2030, SPEFloatingPointData, SPEFloatingPointException, EXC_XFER_EE);
705#else 705#else
706 EXCEPTION(0x2040, SPEFloatingPointData, UnknownException, EXC_XFER_EE) 706 EXCEPTION(0x2040, SPEFloatingPointData, unknown_exception, EXC_XFER_EE)
707#endif /* CONFIG_SPE */ 707#endif /* CONFIG_SPE */
708 708
709 /* SPE Floating Point Round */ 709 /* SPE Floating Point Round */
710 EXCEPTION(0x2050, SPEFloatingPointRound, UnknownException, EXC_XFER_EE) 710 EXCEPTION(0x2050, SPEFloatingPointRound, unknown_exception, EXC_XFER_EE)
711 711
712 /* Performance Monitor */ 712 /* Performance Monitor */
713 EXCEPTION(0x2060, PerformanceMonitor, PerformanceMonitorException, EXC_XFER_STD) 713 EXCEPTION(0x2060, PerformanceMonitor, performance_monitor_exception, EXC_XFER_STD)
714 714
715 715
716 /* Debug Interrupt */ 716 /* Debug Interrupt */
diff --git a/arch/powerpc/kernel/idle_power4.S b/arch/powerpc/kernel/idle_power4.S
new file mode 100644
index 000000000000..5596fad6c87c
--- /dev/null
+++ b/arch/powerpc/kernel/idle_power4.S
@@ -0,0 +1,78 @@
1/*
2 * This file contains the power_save function for 6xx & 7xxx CPUs
3 * rewritten in assembler
4 *
5 * Warning ! This code assumes that if your machine has a 750fx
6 * it will have PLL 1 set to low speed mode (used during NAP/DOZE).
7 * if this is not the case some additional changes will have to
8 * be done to check a runtime var (a bit like powersave-nap)
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version
13 * 2 of the License, or (at your option) any later version.
14 */
15
16#include <linux/config.h>
17#include <linux/threads.h>
18#include <asm/processor.h>
19#include <asm/page.h>
20#include <asm/cputable.h>
21#include <asm/thread_info.h>
22#include <asm/ppc_asm.h>
23#include <asm/asm-offsets.h>
24
25#undef DEBUG
26
27 .text
28
29/*
30 * Here is the power_save_6xx function. This could eventually be
31 * split into several functions & changing the function pointer
32 * depending on the various features.
33 */
34_GLOBAL(power4_idle)
35BEGIN_FTR_SECTION
36 blr
37END_FTR_SECTION_IFCLR(CPU_FTR_CAN_NAP)
38 /* We must dynamically check for the NAP feature as it
39 * can be cleared by CPU init after the fixups are done
40 */
41 LOADBASE(r3,cur_cpu_spec)
42 ld r4,cur_cpu_spec@l(r3)
43 ld r4,CPU_SPEC_FEATURES(r4)
44 andi. r0,r4,CPU_FTR_CAN_NAP
45 beqlr
46 /* Now check if user or arch enabled NAP mode */
47 LOADBASE(r3,powersave_nap)
48 lwz r4,powersave_nap@l(r3)
49 cmpwi 0,r4,0
50 beqlr
51
52 /* Clear MSR:EE */
53 mfmsr r7
54 li r4,0
55 ori r4,r4,MSR_EE
56 andc r0,r7,r4
57 mtmsrd r0
58
59 /* Check current_thread_info()->flags */
60 clrrdi r4,r1,THREAD_SHIFT
61 ld r4,TI_FLAGS(r4)
62 andi. r0,r4,_TIF_NEED_RESCHED
63 beq 1f
64 mtmsrd r7 /* out of line this ? */
65 blr
661:
67 /* Go to NAP now */
68BEGIN_FTR_SECTION
69 DSSALL
70 sync
71END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
72 oris r7,r7,MSR_POW@h
73 sync
74 isync
75 mtmsrd r7
76 isync
77 sync
78 blr
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index 7bfa0f0121ff..07c994585c0b 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -53,10 +53,10 @@
53 53
54extern void transfer_to_handler(void); 54extern void transfer_to_handler(void);
55extern void do_IRQ(struct pt_regs *regs); 55extern void do_IRQ(struct pt_regs *regs);
56extern void MachineCheckException(struct pt_regs *regs); 56extern void machine_check_exception(struct pt_regs *regs);
57extern void AlignmentException(struct pt_regs *regs); 57extern void alignment_exception(struct pt_regs *regs);
58extern void ProgramCheckException(struct pt_regs *regs); 58extern void program_check_exception(struct pt_regs *regs);
59extern void SingleStepException(struct pt_regs *regs); 59extern void single_step_exception(struct pt_regs *regs);
60extern int do_signal(sigset_t *, struct pt_regs *); 60extern int do_signal(sigset_t *, struct pt_regs *);
61extern int pmac_newworld; 61extern int pmac_newworld;
62extern int sys_sigreturn(struct pt_regs *regs); 62extern int sys_sigreturn(struct pt_regs *regs);
@@ -72,10 +72,10 @@ EXPORT_SYMBOL(clear_user_page);
72EXPORT_SYMBOL(do_signal); 72EXPORT_SYMBOL(do_signal);
73EXPORT_SYMBOL(transfer_to_handler); 73EXPORT_SYMBOL(transfer_to_handler);
74EXPORT_SYMBOL(do_IRQ); 74EXPORT_SYMBOL(do_IRQ);
75EXPORT_SYMBOL(MachineCheckException); 75EXPORT_SYMBOL(machine_check_exception);
76EXPORT_SYMBOL(AlignmentException); 76EXPORT_SYMBOL(alignment_exception);
77EXPORT_SYMBOL(ProgramCheckException); 77EXPORT_SYMBOL(program_check_exception);
78EXPORT_SYMBOL(SingleStepException); 78EXPORT_SYMBOL(single_step_exception);
79EXPORT_SYMBOL(sys_sigreturn); 79EXPORT_SYMBOL(sys_sigreturn);
80EXPORT_SYMBOL(ppc_n_lost_interrupts); 80EXPORT_SYMBOL(ppc_n_lost_interrupts);
81EXPORT_SYMBOL(ppc_lost_interrupts); 81EXPORT_SYMBOL(ppc_lost_interrupts);
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index c7afbbba0f36..37b961f1e279 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -1,6 +1,4 @@
1/* 1/*
2 * arch/powerpc/kernel/traps.c
3 *
4 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) 2 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
5 * 3 *
6 * This program is free software; you can redistribute it and/or 4 * This program is free software; you can redistribute it and/or
@@ -23,29 +21,46 @@
23#include <linux/mm.h> 21#include <linux/mm.h>
24#include <linux/stddef.h> 22#include <linux/stddef.h>
25#include <linux/unistd.h> 23#include <linux/unistd.h>
26#include <linux/ptrace.h>
27#include <linux/slab.h> 24#include <linux/slab.h>
28#include <linux/user.h> 25#include <linux/user.h>
29#include <linux/a.out.h> 26#include <linux/a.out.h>
30#include <linux/interrupt.h> 27#include <linux/interrupt.h>
31#include <linux/config.h>
32#include <linux/init.h> 28#include <linux/init.h>
33#include <linux/module.h> 29#include <linux/module.h>
34#include <linux/prctl.h>
35#include <linux/delay.h> 30#include <linux/delay.h>
36#include <linux/kprobes.h> 31#include <linux/kprobes.h>
37#include <asm/kdebug.h> 32#include <asm/kdebug.h>
33#ifdef CONFIG_PPC32
34#include <linux/ptrace.h>
35#include <linux/prctl.h>
36#endif
38 37
39#include <asm/pgtable.h> 38#include <asm/pgtable.h>
40#include <asm/uaccess.h> 39#include <asm/uaccess.h>
41#include <asm/system.h> 40#include <asm/system.h>
42#include <asm/io.h> 41#include <asm/io.h>
42#ifdef CONFIG_PPC32
43#include <asm/reg.h> 43#include <asm/reg.h>
44#include <asm/xmon.h> 44#include <asm/xmon.h>
45#ifdef CONFIG_PMAC_BACKLIGHT 45#ifdef CONFIG_PMAC_BACKLIGHT
46#include <asm/backlight.h> 46#include <asm/backlight.h>
47#endif 47#endif
48#include <asm/perfmon.h> 48#include <asm/perfmon.h>
49#endif
50#ifdef CONFIG_PPC64
51#include <asm/processor.h>
52#include <asm/ppcdebug.h>
53#include <asm/rtas.h>
54#include <asm/systemcfg.h>
55#include <asm/machdep.h>
56#include <asm/pmc.h>
57#endif
58
59#ifdef CONFIG_PPC64
60#define __KPROBES __kprobes
61#else
62#define __KPROBES
63#endif
49 64
50#ifdef CONFIG_DEBUGGER 65#ifdef CONFIG_DEBUGGER
51int (*__debugger)(struct pt_regs *regs); 66int (*__debugger)(struct pt_regs *regs);
@@ -96,7 +111,7 @@ int die(const char *str, struct pt_regs *regs, long err)
96 console_verbose(); 111 console_verbose();
97 spin_lock_irq(&die_lock); 112 spin_lock_irq(&die_lock);
98 bust_spinlocks(1); 113 bust_spinlocks(1);
99#ifdef CONFIG_PMAC_BACKLIGHT 114#if defined(CONFIG_PPC32) && defined(CONFIG_PMAC_BACKLIGHT)
100 if (_machine == _MACH_Pmac) { 115 if (_machine == _MACH_Pmac) {
101 set_backlight_enable(1); 116 set_backlight_enable(1);
102 set_backlight_level(BACKLIGHT_MAX); 117 set_backlight_level(BACKLIGHT_MAX);
@@ -154,9 +169,17 @@ int die(const char *str, struct pt_regs *regs, long err)
154 panic("Fatal exception in interrupt"); 169 panic("Fatal exception in interrupt");
155 170
156 if (panic_on_oops) { 171 if (panic_on_oops) {
172#ifdef CONFIG_PPC64
173 printk(KERN_EMERG "Fatal exception: panic in 5 seconds\n");
174 ssleep(5);
175#endif
157 panic("Fatal exception"); 176 panic("Fatal exception");
158 } 177 }
178#ifdef CONFIG_PPC32
159 do_exit(err); 179 do_exit(err);
180#else
181 do_exit(SIGSEGV);
182#endif
160 183
161 return 0; 184 return 0;
162} 185}
@@ -176,6 +199,7 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr)
176 info.si_addr = (void __user *) addr; 199 info.si_addr = (void __user *) addr;
177 force_sig_info(signr, &info, current); 200 force_sig_info(signr, &info, current);
178 201
202#ifdef CONFIG_PPC32
179 /* 203 /*
180 * Init gets no signals that it doesn't have a handler for. 204 * Init gets no signals that it doesn't have a handler for.
181 * That's all very well, but if it has caused a synchronous 205 * That's all very well, but if it has caused a synchronous
@@ -197,6 +221,7 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr)
197 do_exit(signr); 221 do_exit(signr);
198 } 222 }
199 } 223 }
224#endif
200} 225}
201 226
202#ifdef CONFIG_PPC64 227#ifdef CONFIG_PPC64
@@ -206,7 +231,7 @@ void system_reset_exception(struct pt_regs *regs)
206 if (ppc_md.system_reset_exception) 231 if (ppc_md.system_reset_exception)
207 ppc_md.system_reset_exception(regs); 232 ppc_md.system_reset_exception(regs);
208 233
209 die("System Reset", regs, SIGABRT); 234 die("System Reset", regs, 0);
210 235
211 /* Must die if the interrupt is not recoverable */ 236 /* Must die if the interrupt is not recoverable */
212 if (!(regs->msr & MSR_RI)) 237 if (!(regs->msr & MSR_RI))
@@ -216,6 +241,7 @@ void system_reset_exception(struct pt_regs *regs)
216} 241}
217#endif 242#endif
218 243
244#ifdef CONFIG_PPC32
219/* 245/*
220 * I/O accesses can cause machine checks on powermacs. 246 * I/O accesses can cause machine checks on powermacs.
221 * Check if the NIP corresponds to the address of a sync 247 * Check if the NIP corresponds to the address of a sync
@@ -264,8 +290,10 @@ static inline int check_io_access(struct pt_regs *regs)
264#endif /* CONFIG_PPC_PMAC */ 290#endif /* CONFIG_PPC_PMAC */
265 return 0; 291 return 0;
266} 292}
293#endif /* CONFIG_PPC32 */
267 294
268#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE) 295#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
296
269/* On 4xx, the reason for the machine check or program exception 297/* On 4xx, the reason for the machine check or program exception
270 is in the ESR. */ 298 is in the ESR. */
271#define get_reason(regs) ((regs)->dsisr) 299#define get_reason(regs) ((regs)->dsisr)
@@ -284,6 +312,7 @@ static inline int check_io_access(struct pt_regs *regs)
284#define clear_single_step(regs) (current->thread.dbcr0 &= ~DBCR0_IC) 312#define clear_single_step(regs) (current->thread.dbcr0 &= ~DBCR0_IC)
285 313
286#else 314#else
315
287/* On non-4xx, the reason for the machine check or program 316/* On non-4xx, the reason for the machine check or program
288 exception is in the MSR. */ 317 exception is in the MSR. */
289#define get_reason(regs) ((regs)->msr) 318#define get_reason(regs) ((regs)->msr)
@@ -297,6 +326,7 @@ static inline int check_io_access(struct pt_regs *regs)
297#define clear_single_step(regs) ((regs)->msr &= ~MSR_SE) 326#define clear_single_step(regs) ((regs)->msr &= ~MSR_SE)
298#endif 327#endif
299 328
329#ifdef CONFIG_PPC32
300/* 330/*
301 * This is "fall-back" implementation for configurations 331 * This is "fall-back" implementation for configurations
302 * which don't provide platform-specific machine check info 332 * which don't provide platform-specific machine check info
@@ -305,8 +335,9 @@ void __attribute__ ((weak))
305platform_machine_check(struct pt_regs *regs) 335platform_machine_check(struct pt_regs *regs)
306{ 336{
307} 337}
338#endif
308 339
309void MachineCheckException(struct pt_regs *regs) 340void machine_check_exception(struct pt_regs *regs)
310{ 341{
311#ifdef CONFIG_PPC64 342#ifdef CONFIG_PPC64
312 int recover = 0; 343 int recover = 0;
@@ -462,23 +493,31 @@ void MachineCheckException(struct pt_regs *regs)
462 * additional info, e.g. bus error registers. 493 * additional info, e.g. bus error registers.
463 */ 494 */
464 platform_machine_check(regs); 495 platform_machine_check(regs);
465#endif /* CONFIG_PPC64 */ 496#endif /* CONFIG_PPC32 */
466 497
467 if (debugger_fault_handler(regs)) 498 if (debugger_fault_handler(regs))
468 return; 499 return;
469 die("Machine check", regs, SIGBUS); 500 die("Machine check", regs,
501#ifdef CONFIG_PPC32
502 SIGBUS
503#else
504 0
505#endif
506 );
470 507
471 /* Must die if the interrupt is not recoverable */ 508 /* Must die if the interrupt is not recoverable */
472 if (!(regs->msr & MSR_RI)) 509 if (!(regs->msr & MSR_RI))
473 panic("Unrecoverable Machine check"); 510 panic("Unrecoverable Machine check");
474} 511}
475 512
513#ifdef CONFIG_PPC32
476void SMIException(struct pt_regs *regs) 514void SMIException(struct pt_regs *regs)
477{ 515{
478 die("System Management Interrupt", regs, SIGABRT); 516 die("System Management Interrupt", regs, SIGABRT);
479} 517}
518#endif
480 519
481void UnknownException(struct pt_regs *regs) 520void unknown_exception(struct pt_regs *regs)
482{ 521{
483 printk("Bad trap at PC: %lx, SR: %lx, vector=%lx\n", 522 printk("Bad trap at PC: %lx, SR: %lx, vector=%lx\n",
484 regs->nip, regs->msr, regs->trap); 523 regs->nip, regs->msr, regs->trap);
@@ -486,7 +525,7 @@ void UnknownException(struct pt_regs *regs)
486 _exception(SIGTRAP, regs, 0, 0); 525 _exception(SIGTRAP, regs, 0, 0);
487} 526}
488 527
489void InstructionBreakpoint(struct pt_regs *regs) 528void instruction_breakpoint_exception(struct pt_regs *regs)
490{ 529{
491 if (notify_die(DIE_IABR_MATCH, "iabr_match", regs, 5, 530 if (notify_die(DIE_IABR_MATCH, "iabr_match", regs, 5,
492 5, SIGTRAP) == NOTIFY_STOP) 531 5, SIGTRAP) == NOTIFY_STOP)
@@ -496,14 +535,20 @@ void InstructionBreakpoint(struct pt_regs *regs)
496 _exception(SIGTRAP, regs, TRAP_BRKPT, regs->nip); 535 _exception(SIGTRAP, regs, TRAP_BRKPT, regs->nip);
497} 536}
498 537
538#ifdef CONFIG_PPC32
499void RunModeException(struct pt_regs *regs) 539void RunModeException(struct pt_regs *regs)
500{ 540{
501 _exception(SIGTRAP, regs, 0, 0); 541 _exception(SIGTRAP, regs, 0, 0);
502} 542}
543#endif
503 544
504void SingleStepException(struct pt_regs *regs) 545void __KPROBES single_step_exception(struct pt_regs *regs)
505{ 546{
547#ifdef CONFIG_PPC32
506 regs->msr &= ~(MSR_SE | MSR_BE); /* Turn off 'trace' bits */ 548 regs->msr &= ~(MSR_SE | MSR_BE); /* Turn off 'trace' bits */
549#else
550 regs->msr &= ~MSR_SE; /* Turn off 'trace' bit */
551#endif
507 552
508 if (notify_die(DIE_SSTEP, "single_step", regs, 5, 553 if (notify_die(DIE_SSTEP, "single_step", regs, 5,
509 5, SIGTRAP) == NOTIFY_STOP) 554 5, SIGTRAP) == NOTIFY_STOP)
@@ -520,15 +565,62 @@ void SingleStepException(struct pt_regs *regs)
520 * pretend we got a single-step exception. This was pointed out 565 * pretend we got a single-step exception. This was pointed out
521 * by Kumar Gala. -- paulus 566 * by Kumar Gala. -- paulus
522 */ 567 */
523static void emulate_single_step(struct pt_regs *regs) 568static inline void emulate_single_step(struct pt_regs *regs)
524{ 569{
525 if (single_stepping(regs)) { 570 if (single_stepping(regs)) {
571#ifdef CONFIG_PPC32
526 clear_single_step(regs); 572 clear_single_step(regs);
527 _exception(SIGTRAP, regs, TRAP_TRACE, 0); 573 _exception(SIGTRAP, regs, TRAP_TRACE, 0);
574#else
575 single_step_exception(regs);
576#endif
528 } 577 }
529} 578}
530 579
531/* Illegal instruction emulation support. Originally written to 580static void parse_fpe(struct pt_regs *regs)
581{
582 int code = 0;
583 unsigned long fpscr;
584
585#ifdef CONFIG_PPC32
586 /* We must make sure the FP state is consistent with
587 * our MSR_FP in regs
588 */
589 preempt_disable();
590 if (regs->msr & MSR_FP)
591 giveup_fpu(current);
592 preempt_enable();
593#else
594 flush_fp_to_thread(current);
595#endif
596
597 fpscr = current->thread.fpscr;
598
599 /* Invalid operation */
600 if ((fpscr & FPSCR_VE) && (fpscr & FPSCR_VX))
601 code = FPE_FLTINV;
602
603 /* Overflow */
604 else if ((fpscr & FPSCR_OE) && (fpscr & FPSCR_OX))
605 code = FPE_FLTOVF;
606
607 /* Underflow */
608 else if ((fpscr & FPSCR_UE) && (fpscr & FPSCR_UX))
609 code = FPE_FLTUND;
610
611 /* Divide by zero */
612 else if ((fpscr & FPSCR_ZE) && (fpscr & FPSCR_ZX))
613 code = FPE_FLTDIV;
614
615 /* Inexact result */
616 else if ((fpscr & FPSCR_XE) && (fpscr & FPSCR_XX))
617 code = FPE_FLTRES;
618
619 _exception(SIGFPE, regs, code, regs->nip);
620}
621
622/*
623 * Illegal instruction emulation support. Originally written to
532 * provide the PVR to user applications using the mfspr rd, PVR. 624 * provide the PVR to user applications using the mfspr rd, PVR.
533 * Return non-zero if we can't emulate, or -EFAULT if the associated 625 * Return non-zero if we can't emulate, or -EFAULT if the associated
534 * memory access caused an access fault. Return zero on success. 626 * memory access caused an access fault. Return zero on success.
@@ -536,7 +628,6 @@ static void emulate_single_step(struct pt_regs *regs)
536 * There are a couple of ways to do this, either "decode" the instruction 628 * There are a couple of ways to do this, either "decode" the instruction
537 * or directly match lots of bits. In this case, matching lots of 629 * or directly match lots of bits. In this case, matching lots of
538 * bits is faster and easier. 630 * bits is faster and easier.
539 *
540 */ 631 */
541#define INST_MFSPR_PVR 0x7c1f42a6 632#define INST_MFSPR_PVR 0x7c1f42a6
542#define INST_MFSPR_PVR_MASK 0xfc1fffff 633#define INST_MFSPR_PVR_MASK 0xfc1fffff
@@ -547,6 +638,8 @@ static void emulate_single_step(struct pt_regs *regs)
547#define INST_MCRXR 0x7c000400 638#define INST_MCRXR 0x7c000400
548#define INST_MCRXR_MASK 0x7c0007fe 639#define INST_MCRXR_MASK 0x7c0007fe
549 640
641#ifdef CONFIG_PPC32
642
550#define INST_STRING 0x7c00042a 643#define INST_STRING 0x7c00042a
551#define INST_STRING_MASK 0x7c0007fe 644#define INST_STRING_MASK 0x7c0007fe
552#define INST_STRING_GEN_MASK 0x7c00067e 645#define INST_STRING_GEN_MASK 0x7c00067e
@@ -622,6 +715,7 @@ static int emulate_string_inst(struct pt_regs *regs, u32 instword)
622 715
623 return 0; 716 return 0;
624} 717}
718#endif /* CONFIG_PPC32 */
625 719
626static int emulate_instruction(struct pt_regs *regs) 720static int emulate_instruction(struct pt_regs *regs)
627{ 721{
@@ -643,22 +737,44 @@ static int emulate_instruction(struct pt_regs *regs)
643 } 737 }
644 738
645 /* Emulating the dcba insn is just a no-op. */ 739 /* Emulating the dcba insn is just a no-op. */
646 if ((instword & INST_DCBA_MASK) == INST_DCBA) 740 if ((instword & INST_DCBA_MASK) == INST_DCBA) {
741#ifdef CONFIG_PPC64
742 static int warned;
743
744 if (!warned) {
745 printk(KERN_WARNING
746 "process %d (%s) uses obsolete 'dcba' insn\n",
747 current->pid, current->comm);
748 warned = 1;
749 }
750#endif /* CONFIG_PPC64 */
647 return 0; 751 return 0;
752 }
648 753
649 /* Emulate the mcrxr insn. */ 754 /* Emulate the mcrxr insn. */
650 if ((instword & INST_MCRXR_MASK) == INST_MCRXR) { 755 if ((instword & INST_MCRXR_MASK) == INST_MCRXR) {
651 int shift = (instword >> 21) & 0x1c; 756 unsigned int shift = (instword >> 21) & 0x1c;
652 unsigned long msk = 0xf0000000UL >> shift; 757 unsigned long msk = 0xf0000000UL >> shift;
758#ifdef CONFIG_PPC64
759 static int warned;
653 760
761 if (!warned) {
762 printk(KERN_WARNING
763 "process %d (%s) uses obsolete 'mcrxr' insn\n",
764 current->pid, current->comm);
765 warned = 1;
766 }
767#endif
654 regs->ccr = (regs->ccr & ~msk) | ((regs->xer >> shift) & msk); 768 regs->ccr = (regs->ccr & ~msk) | ((regs->xer >> shift) & msk);
655 regs->xer &= ~0xf0000000UL; 769 regs->xer &= ~0xf0000000UL;
656 return 0; 770 return 0;
657 } 771 }
658 772
773#ifdef CONFIG_PPC32
659 /* Emulate load/store string insn. */ 774 /* Emulate load/store string insn. */
660 if ((instword & INST_STRING_GEN_MASK) == INST_STRING) 775 if ((instword & INST_STRING_GEN_MASK) == INST_STRING)
661 return emulate_string_inst(regs, instword); 776 return emulate_string_inst(regs, instword);
777#endif
662 778
663 return -EINVAL; 779 return -EINVAL;
664} 780}
@@ -686,7 +802,7 @@ struct bug_entry *find_bug(unsigned long bugaddr)
686 return module_find_bug(bugaddr); 802 return module_find_bug(bugaddr);
687} 803}
688 804
689int check_bug_trap(struct pt_regs *regs) 805static int check_bug_trap(struct pt_regs *regs)
690{ 806{
691 struct bug_entry *bug; 807 struct bug_entry *bug;
692 unsigned long addr; 808 unsigned long addr;
@@ -701,34 +817,38 @@ int check_bug_trap(struct pt_regs *regs)
701 return 0; 817 return 0;
702 if (bug->line & BUG_WARNING_TRAP) { 818 if (bug->line & BUG_WARNING_TRAP) {
703 /* this is a WARN_ON rather than BUG/BUG_ON */ 819 /* this is a WARN_ON rather than BUG/BUG_ON */
704#ifdef CONFIG_XMON 820#if defined(CONFIG_PPC32) && defined(CONFIG_XMON)
705 xmon_printf(KERN_ERR "Badness in %s at %s:%d\n", 821 xmon_printf(KERN_ERR "Badness in %s at %s:%d\n",
706 bug->function, bug->file, 822 bug->function, bug->file,
707 bug->line & ~BUG_WARNING_TRAP); 823 bug->line & ~BUG_WARNING_TRAP);
708#endif /* CONFIG_XMON */ 824#endif
709 printk(KERN_ERR "Badness in %s at %s:%d\n", 825 printk(KERN_ERR "Badness in %s at %s:%d\n",
710 bug->function, bug->file, 826 bug->function, bug->file,
711 bug->line & ~BUG_WARNING_TRAP); 827 bug->line & ~BUG_WARNING_TRAP);
828#ifdef CONFIG_PPC32
712 dump_stack(); 829 dump_stack();
830#else
831 show_stack(current, (void *)regs->gpr[1]);
832#endif
713 return 1; 833 return 1;
714 } 834 }
715#ifdef CONFIG_XMON 835#if defined(CONFIG_PPC32) && defined(CONFIG_XMON)
716 xmon_printf(KERN_CRIT "kernel BUG in %s at %s:%d!\n", 836 xmon_printf(KERN_CRIT "kernel BUG in %s at %s:%d!\n",
717 bug->function, bug->file, bug->line); 837 bug->function, bug->file, bug->line);
718 xmon(regs); 838 xmon(regs);
719#endif /* CONFIG_XMON */ 839#endif
720 printk(KERN_CRIT "kernel BUG in %s at %s:%d!\n", 840 printk(KERN_CRIT "kernel BUG in %s at %s:%d!\n",
721 bug->function, bug->file, bug->line); 841 bug->function, bug->file, bug->line);
722 842
723 return 0; 843 return 0;
724} 844}
725 845
726void ProgramCheckException(struct pt_regs *regs) 846void __KPROBES program_check_exception(struct pt_regs *regs)
727{ 847{
728 unsigned int reason = get_reason(regs); 848 unsigned int reason = get_reason(regs);
849#if defined(CONFIG_PPC32) && defined(CONFIG_MATH_EMULATION)
729 extern int do_mathemu(struct pt_regs *regs); 850 extern int do_mathemu(struct pt_regs *regs);
730 851
731#ifdef CONFIG_MATH_EMULATION
732 /* (reason & REASON_ILLEGAL) would be the obvious thing here, 852 /* (reason & REASON_ILLEGAL) would be the obvious thing here,
733 * but there seems to be a hardware bug on the 405GP (RevD) 853 * but there seems to be a hardware bug on the 405GP (RevD)
734 * that means ESR is sometimes set incorrectly - either to 854 * that means ESR is sometimes set incorrectly - either to
@@ -740,69 +860,61 @@ void ProgramCheckException(struct pt_regs *regs)
740 emulate_single_step(regs); 860 emulate_single_step(regs);
741 return; 861 return;
742 } 862 }
743#endif /* CONFIG_MATH_EMULATION */ 863#endif
744
745 if (reason & REASON_FP) {
746 /* IEEE FP exception */
747 int code = 0;
748 u32 fpscr;
749 864
750 /* We must make sure the FP state is consistent with 865#ifdef CONFIG_PPC64
751 * our MSR_FP in regs 866 if (debugger_fault_handler(regs))
752 */
753 preempt_disable();
754 if (regs->msr & MSR_FP)
755 giveup_fpu(current);
756 preempt_enable();
757
758 fpscr = current->thread.fpscr;
759 fpscr &= fpscr << 22; /* mask summary bits with enables */
760 if (fpscr & FPSCR_VX)
761 code = FPE_FLTINV;
762 else if (fpscr & FPSCR_OX)
763 code = FPE_FLTOVF;
764 else if (fpscr & FPSCR_UX)
765 code = FPE_FLTUND;
766 else if (fpscr & FPSCR_ZX)
767 code = FPE_FLTDIV;
768 else if (fpscr & FPSCR_XX)
769 code = FPE_FLTRES;
770 _exception(SIGFPE, regs, code, regs->nip);
771 return; 867 return;
772 } 868#endif
773 869
774 if (reason & REASON_TRAP) { 870 if (reason & REASON_FP) {
871 /* IEEE FP exception */
872 parse_fpe(regs);
873 } else if (reason & REASON_TRAP) {
775 /* trap exception */ 874 /* trap exception */
875#ifdef CONFIG_PPC64
876 if (notify_die(DIE_BPT, "breakpoint", regs, 5, 5, SIGTRAP)
877 == NOTIFY_STOP)
878 return;
879#endif
776 if (debugger_bpt(regs)) 880 if (debugger_bpt(regs))
777 return; 881 return;
778 if (check_bug_trap(regs)) { 882 if (check_bug_trap(regs)) {
779 regs->nip += 4; 883 regs->nip += 4;
780 return; 884 return;
781 } 885 }
782 _exception(SIGTRAP, regs, TRAP_BRKPT, 0); 886 _exception(SIGTRAP, regs, TRAP_BRKPT,
783 return; 887#ifdef CONFIG_PPC32
784 } 888 0
785 889#else
786 /* Try to emulate it if we should. */ 890 regs->nip
787 if (reason & (REASON_ILLEGAL | REASON_PRIVILEGED)) { 891#endif
892 );
893 } else
894#ifdef CONFIG_PPC32
895 if (reason & (REASON_ILLEGAL | REASON_PRIVILEGED))
896#endif
897 {
898 /* Privileged or illegal instruction; try to emulate it. */
788 switch (emulate_instruction(regs)) { 899 switch (emulate_instruction(regs)) {
789 case 0: 900 case 0:
790 regs->nip += 4; 901 regs->nip += 4;
791 emulate_single_step(regs); 902 emulate_single_step(regs);
792 return; 903 break;
793 case -EFAULT: 904 case -EFAULT:
794 _exception(SIGSEGV, regs, SEGV_MAPERR, regs->nip); 905 _exception(SIGSEGV, regs, SEGV_MAPERR, regs->nip);
795 return; 906 break;
907 default:
908 if (reason & REASON_PRIVILEGED)
909 _exception(SIGILL, regs, ILL_PRVOPC, regs->nip);
910 else
911 _exception(SIGILL, regs, ILL_ILLOPC, regs->nip);
912 break;
796 } 913 }
797 } 914 }
798
799 if (reason & REASON_PRIVILEGED)
800 _exception(SIGILL, regs, ILL_PRVOPC, regs->nip);
801 else
802 _exception(SIGILL, regs, ILL_ILLOPC, regs->nip);
803} 915}
804 916
805void AlignmentException(struct pt_regs *regs) 917void alignment_exception(struct pt_regs *regs)
806{ 918{
807 int fixed; 919 int fixed;
808 920
@@ -814,18 +926,31 @@ void AlignmentException(struct pt_regs *regs)
814 return; 926 return;
815 } 927 }
816 928
817 /* Operand address was bad */ 929 /* Operand address was bad */
818 if (fixed == -EFAULT) { 930 if (fixed == -EFAULT) {
819 if (user_mode(regs)) 931 if (user_mode(regs))
820 _exception(SIGSEGV, regs, SEGV_ACCERR, regs->dar); 932 _exception(SIGSEGV, regs,
933#ifdef CONFIG_PPC32
934 SEGV_ACCERR,
935#else
936 SEGV_MAPERR,
937#endif
938 regs->dar);
821 else 939 else
822 /* Search exception table */ 940 /* Search exception table */
823 bad_page_fault(regs, regs->dar, SIGSEGV); 941 bad_page_fault(regs, regs->dar, SIGSEGV);
824 return; 942 return;
825 } 943 }
826 _exception(SIGBUS, regs, BUS_ADRALN, regs->dar); 944 _exception(SIGBUS, regs, BUS_ADRALN,
945#ifdef CONFIG_PPC32
946 regs->dar
947#else
948 regs->nip
949#endif
950 );
827} 951}
828 952
953#ifdef CONFIG_PPC32
829void StackOverflow(struct pt_regs *regs) 954void StackOverflow(struct pt_regs *regs)
830{ 955{
831 printk(KERN_CRIT "Kernel stack overflow in process %p, r1=%lx\n", 956 printk(KERN_CRIT "Kernel stack overflow in process %p, r1=%lx\n",
@@ -849,8 +974,58 @@ void trace_syscall(struct pt_regs *regs)
849 current, current->pid, regs->nip, regs->link, regs->gpr[0], 974 current, current->pid, regs->nip, regs->link, regs->gpr[0],
850 regs->ccr&0x10000000?"Error=":"", regs->gpr[3], print_tainted()); 975 regs->ccr&0x10000000?"Error=":"", regs->gpr[3], print_tainted());
851} 976}
977#endif /* CONFIG_PPC32 */
978
979#ifdef CONFIG_PPC64
980void kernel_fp_unavailable_exception(struct pt_regs *regs)
981{
982 printk(KERN_EMERG "Unrecoverable FP Unavailable Exception "
983 "%lx at %lx\n", regs->trap, regs->nip);
984 die("Unrecoverable FP Unavailable Exception", regs, SIGABRT);
985}
986#endif
987
988void altivec_unavailable_exception(struct pt_regs *regs)
989{
990#if !defined(CONFIG_ALTIVEC) || defined(CONFIG_PPC64)
991 if (user_mode(regs)) {
992 /* A user program has executed an altivec instruction,
993 but this kernel doesn't support altivec. */
994 _exception(SIGILL, regs, ILL_ILLOPC, regs->nip);
995 return;
996 }
997#endif
998#ifdef CONFIG_PPC32
999 {
1000 static int kernel_altivec_count;
1001
1002 /* The kernel has executed an altivec instruction without
1003 first enabling altivec. Whinge but let it do it. */
1004 if (++kernel_altivec_count < 10)
1005 printk(KERN_ERR "AltiVec used in kernel (task=%p, pc=%lx)\n",
1006 current, regs->nip);
1007 regs->msr |= MSR_VEC;
1008 }
1009#else
1010 printk(KERN_EMERG "Unrecoverable VMX/Altivec Unavailable Exception "
1011 "%lx at %lx\n", regs->trap, regs->nip);
1012 die("Unrecoverable VMX/Altivec Unavailable Exception", regs, SIGABRT);
1013#endif
1014}
1015
1016#ifdef CONFIG_PPC64
1017extern perf_irq_t perf_irq;
1018#endif
1019
1020#if defined(CONFIG_PPC64) || defined(CONFIG_E500)
1021void performance_monitor_exception(struct pt_regs *regs)
1022{
1023 perf_irq(regs);
1024}
1025#endif
1026
852 1027
853#ifdef CONFIG_8xx 1028#if defined(CONFIG_PPC32) && defined(CONFIG_8xx)
854void SoftwareEmulation(struct pt_regs *regs) 1029void SoftwareEmulation(struct pt_regs *regs)
855{ 1030{
856 extern int do_mathemu(struct pt_regs *); 1031 extern int do_mathemu(struct pt_regs *);
@@ -879,8 +1054,9 @@ void SoftwareEmulation(struct pt_regs *regs)
879 } else 1054 } else
880 emulate_single_step(regs); 1055 emulate_single_step(regs);
881} 1056}
882#endif /* CONFIG_8xx */ 1057#endif /* defined(CONFIG_PPC32) && defined(CONFIG_8xx) */
883 1058
1059#ifdef CONFIG_PPC32
884#if defined(CONFIG_40x) || defined(CONFIG_BOOKE) 1060#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
885 1061
886void DebugException(struct pt_regs *regs, unsigned long debug_status) 1062void DebugException(struct pt_regs *regs, unsigned long debug_status)
@@ -909,42 +1085,36 @@ void TAUException(struct pt_regs *regs)
909 regs->nip, regs->msr, regs->trap, print_tainted()); 1085 regs->nip, regs->msr, regs->trap, print_tainted());
910} 1086}
911#endif /* CONFIG_INT_TAU */ 1087#endif /* CONFIG_INT_TAU */
912 1088#endif /* CONFIG_PPC32*/
913void AltivecUnavailException(struct pt_regs *regs)
914{
915 static int kernel_altivec_count;
916
917#ifndef CONFIG_ALTIVEC
918 if (user_mode(regs)) {
919 /* A user program has executed an altivec instruction,
920 but this kernel doesn't support altivec. */
921 _exception(SIGILL, regs, ILL_ILLOPC, regs->nip);
922 return;
923 }
924#endif
925 /* The kernel has executed an altivec instruction without
926 first enabling altivec. Whinge but let it do it. */
927 if (++kernel_altivec_count < 10)
928 printk(KERN_ERR "AltiVec used in kernel (task=%p, pc=%lx)\n",
929 current, regs->nip);
930 regs->msr |= MSR_VEC;
931}
932 1089
933#ifdef CONFIG_ALTIVEC 1090#ifdef CONFIG_ALTIVEC
934void AltivecAssistException(struct pt_regs *regs) 1091void altivec_assist_exception(struct pt_regs *regs)
935{ 1092{
936 int err; 1093 int err;
1094#ifdef CONFIG_PPC64
1095 siginfo_t info;
1096#endif
937 1097
1098#ifdef CONFIG_PPC32
938 preempt_disable(); 1099 preempt_disable();
939 if (regs->msr & MSR_VEC) 1100 if (regs->msr & MSR_VEC)
940 giveup_altivec(current); 1101 giveup_altivec(current);
941 preempt_enable(); 1102 preempt_enable();
1103#endif
942 if (!user_mode(regs)) { 1104 if (!user_mode(regs)) {
943 printk(KERN_EMERG "VMX/Altivec assist exception in kernel mode" 1105 printk(KERN_EMERG "VMX/Altivec assist exception in kernel mode"
944 " at %lx\n", regs->nip); 1106 " at %lx\n", regs->nip);
945 die("Kernel Altivec assist exception", regs, SIGILL); 1107 die("Kernel "
1108#ifdef CONFIG_PPC64
1109 "VMX/"
1110#endif
1111 "Altivec assist exception", regs, SIGILL);
946 } 1112 }
947 1113
1114#ifdef CONFIG_PPC64
1115 flush_altivec_to_thread(current);
1116#endif /* CONFIG_PPC64 */
1117
948 err = emulate_altivec(regs); 1118 err = emulate_altivec(regs);
949 if (err == 0) { 1119 if (err == 0) {
950 regs->nip += 4; /* skip emulated instruction */ 1120 regs->nip += 4; /* skip emulated instruction */
@@ -954,7 +1124,15 @@ void AltivecAssistException(struct pt_regs *regs)
954 1124
955 if (err == -EFAULT) { 1125 if (err == -EFAULT) {
956 /* got an error reading the instruction */ 1126 /* got an error reading the instruction */
1127#ifdef CONFIG_PPC32
957 _exception(SIGSEGV, regs, SEGV_ACCERR, regs->nip); 1128 _exception(SIGSEGV, regs, SEGV_ACCERR, regs->nip);
1129#else
1130 info.si_signo = SIGSEGV;
1131 info.si_errno = 0;
1132 info.si_code = SEGV_MAPERR;
1133 info.si_addr = (void __user *) regs->nip;
1134 force_sig_info(SIGSEGV, &info, current);
1135#endif
958 } else { 1136 } else {
959 /* didn't recognize the instruction */ 1137 /* didn't recognize the instruction */
960 /* XXX quick hack for now: set the non-Java bit in the VSCR */ 1138 /* XXX quick hack for now: set the non-Java bit in the VSCR */
@@ -966,13 +1144,7 @@ void AltivecAssistException(struct pt_regs *regs)
966} 1144}
967#endif /* CONFIG_ALTIVEC */ 1145#endif /* CONFIG_ALTIVEC */
968 1146
969#ifdef CONFIG_E500 1147#ifdef CONFIG_PPC32
970void PerformanceMonitorException(struct pt_regs *regs)
971{
972 perf_irq(regs);
973}
974#endif
975
976#ifdef CONFIG_FSL_BOOKE 1148#ifdef CONFIG_FSL_BOOKE
977void CacheLockingException(struct pt_regs *regs, unsigned long address, 1149void CacheLockingException(struct pt_regs *regs, unsigned long address,
978 unsigned long error_code) 1150 unsigned long error_code)
@@ -1022,7 +1194,24 @@ void SPEFloatingPointException(struct pt_regs *regs)
1022 return; 1194 return;
1023} 1195}
1024#endif 1196#endif
1197#endif /* CONFIG_PPC32 */
1025 1198
1199#ifdef CONFIG_PPC64
1200/*
1201 * We enter here if we get an unrecoverable exception, that is, one
1202 * that happened at a point where the RI (recoverable interrupt) bit
1203 * in the MSR is 0. This indicates that SRR0/1 are live, and that
1204 * we therefore lost state by taking this exception.
1205 */
1206void unrecoverable_exception(struct pt_regs *regs)
1207{
1208 printk(KERN_EMERG "Unrecoverable exception %lx at %lx\n",
1209 regs->trap, regs->nip);
1210 die("Unrecoverable exception", regs, SIGABRT);
1211}
1212#endif /* CONFIG_PPC64 */
1213
1214#ifdef CONFIG_PPC32
1026#ifdef CONFIG_BOOKE_WDT 1215#ifdef CONFIG_BOOKE_WDT
1027/* 1216/*
1028 * Default handler for a Watchdog exception, 1217 * Default handler for a Watchdog exception,
@@ -1041,6 +1230,20 @@ void WatchdogException(struct pt_regs *regs)
1041 WatchdogHandler(regs); 1230 WatchdogHandler(regs);
1042} 1231}
1043#endif 1232#endif
1233#endif /* CONFIG_PPC32 */
1234
1235#ifdef CONFIG_PPC64
1236/*
1237 * We enter here if we discover during exception entry that we are
1238 * running in supervisor mode with a userspace value in the stack pointer.
1239 */
1240void kernel_bad_stack(struct pt_regs *regs)
1241{
1242 printk(KERN_EMERG "Bad kernel stack pointer %lx at %lx\n",
1243 regs->gpr[1], regs->nip);
1244 die("Bad kernel stack pointer", regs, SIGABRT);
1245}
1246#endif
1044 1247
1045void __init trap_init(void) 1248void __init trap_init(void)
1046{ 1249{