diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-13 20:48:25 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-13 20:48:25 -0700 |
| commit | 0ff8285075a1242dbc969b6b4b1719d692931a02 (patch) | |
| tree | 75498fec971960aa9a038846cf7d2561a49bce73 /arch/sparc64/lib/mcount.S | |
| parent | 8d0968abd03ec6b407df117adc773562386702fa (diff) | |
| parent | 6f63e781eaf6a741fc65f773017154b20ed4ce3b (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc64: Handle stack trace attempts before irqstacks are setup.
sparc64: Implement IRQ stacks.
sparc: remove include of linux/of_device.h from asm/of_device.h
sparc64: Fix recursion in stack overflow detection handling.
sparc/drivers: use linux/of_device.h instead of asm/of_device.h
sparc64: Don't MAGIC_SYSRQ ifdef smp_fetch_global_regs and support code.
Diffstat (limited to 'arch/sparc64/lib/mcount.S')
| -rw-r--r-- | arch/sparc64/lib/mcount.S | 39 |
1 files changed, 36 insertions, 3 deletions
diff --git a/arch/sparc64/lib/mcount.S b/arch/sparc64/lib/mcount.S index 7735a7a6053..fad90ddb3a2 100644 --- a/arch/sparc64/lib/mcount.S +++ b/arch/sparc64/lib/mcount.S @@ -48,12 +48,45 @@ mcount: sub %g3, STACK_BIAS, %g3 cmp %sp, %g3 bg,pt %xcc, 1f - sethi %hi(panicstring), %g3 + nop + lduh [%g6 + TI_CPU], %g1 + sethi %hi(hardirq_stack), %g3 + or %g3, %lo(hardirq_stack), %g3 + sllx %g1, 3, %g1 + ldx [%g3 + %g1], %g7 + sub %g7, STACK_BIAS, %g7 + cmp %sp, %g7 + bleu,pt %xcc, 2f + sethi %hi(THREAD_SIZE), %g3 + add %g7, %g3, %g7 + cmp %sp, %g7 + blu,pn %xcc, 1f +2: sethi %hi(softirq_stack), %g3 + or %g3, %lo(softirq_stack), %g3 + ldx [%g3 + %g1], %g7 + cmp %sp, %g7 + bleu,pt %xcc, 2f + sethi %hi(THREAD_SIZE), %g3 + add %g7, %g3, %g7 + cmp %sp, %g7 + blu,pn %xcc, 1f + nop + /* If we are already on ovstack, don't hop onto it + * again, we are already trying to output the stack overflow + * message. + */ sethi %hi(ovstack), %g7 ! cant move to panic stack fast enough or %g7, %lo(ovstack), %g7 - add %g7, OVSTACKSIZE, %g7 + add %g7, OVSTACKSIZE, %g3 + sub %g3, STACK_BIAS + 192, %g3 sub %g7, STACK_BIAS, %g7 - mov %g7, %sp + cmp %sp, %g7 + blu,pn %xcc, 2f + cmp %sp, %g3 + bleu,pn %xcc, 1f + nop +2: mov %g3, %sp + sethi %hi(panicstring), %g3 call prom_printf or %g3, %lo(panicstring), %o0 call prom_halt |