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author | Jiri Kosina <jkosina@suse.cz> | 2010-08-10 13:22:08 +0200 |
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committer | Jiri Kosina <jkosina@suse.cz> | 2010-08-10 13:22:08 +0200 |
commit | fb8231a8b139035476f2a8aaac837d0099b66dad (patch) | |
tree | 2875806beb96ea0cdab292146767a5085721dc6a /arch/sparc/kernel/helpers.S | |
parent | fix printk typo 'faild' (diff) | |
parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 (diff) | |
download | linux-fb8231a8b139035476f2a8aaac837d0099b66dad.tar.xz linux-fb8231a8b139035476f2a8aaac837d0099b66dad.zip |
Merge branch 'master' into for-next
Conflicts:
arch/arm/mach-omap1/board-nokia770.c
Diffstat (limited to 'arch/sparc/kernel/helpers.S')
-rw-r--r-- | arch/sparc/kernel/helpers.S | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/arch/sparc/kernel/helpers.S b/arch/sparc/kernel/helpers.S index 92090cc9e829..314dd0c9fc5b 100644 --- a/arch/sparc/kernel/helpers.S +++ b/arch/sparc/kernel/helpers.S @@ -46,81 +46,6 @@ stack_trace_flush: nop .size stack_trace_flush,.-stack_trace_flush -#ifdef CONFIG_PERF_EVENTS - .globl perf_arch_fetch_caller_regs - .type perf_arch_fetch_caller_regs,#function -perf_arch_fetch_caller_regs: - /* We always read the %pstate into %o5 since we will use - * that to construct a fake %tstate to store into the regs. - */ - rdpr %pstate, %o5 - brz,pn %o2, 50f - mov %o2, %g7 - - /* Turn off interrupts while we walk around the register - * window by hand. - */ - wrpr %o5, PSTATE_IE, %pstate - - /* The %canrestore tells us how many register windows are - * still live in the chip above us, past that we have to - * walk the frame as saved on the stack. We stash away - * the %cwp in %g1 so we can return back to the original - * register window. - */ - rdpr %cwp, %g1 - rdpr %canrestore, %g2 - sub %g1, 1, %g3 - - /* We have the skip count in %g7, if it hits zero then - * %fp/%i7 are the registers we need. Otherwise if our - * %canrestore count maintained in %g2 hits zero we have - * to start traversing the stack. - */ -10: brz,pn %g2, 4f - sub %g2, 1, %g2 - wrpr %g3, %cwp - subcc %g7, 1, %g7 - bne,pt %xcc, 10b - sub %g3, 1, %g3 - - /* We found the values we need in the cpu's register - * windows. - */ - mov %fp, %g3 - ba,pt %xcc, 3f - mov %i7, %g2 - -50: mov %fp, %g3 - ba,pt %xcc, 2f - mov %i7, %g2 - - /* We hit the end of the valid register windows in the - * cpu, start traversing the stack frame. - */ -4: mov %fp, %g3 - -20: ldx [%g3 + STACK_BIAS + RW_V9_I7], %g2 - subcc %g7, 1, %g7 - bne,pn %xcc, 20b - ldx [%g3 + STACK_BIAS + RW_V9_I6], %g3 - - /* Restore the current register window position and - * re-enable interrupts. - */ -3: wrpr %g1, %cwp - wrpr %o5, %pstate - -2: stx %g3, [%o0 + PT_V9_FP] - sllx %o5, 8, %o5 - stx %o5, [%o0 + PT_V9_TSTATE] - stx %g2, [%o0 + PT_V9_TPC] - add %g2, 4, %g2 - retl - stx %g2, [%o0 + PT_V9_TNPC] - .size perf_arch_fetch_caller_regs,.-perf_arch_fetch_caller_regs -#endif /* CONFIG_PERF_EVENTS */ - #ifdef CONFIG_SMP .globl hard_smp_processor_id .type hard_smp_processor_id,#function |