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author | Sam Ravnborg <sam@ravnborg.org> | 2008-12-03 11:11:52 (GMT) |
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committer | David S. Miller <davem@davemloft.net> | 2008-12-04 17:17:21 (GMT) |
commit | a88b5ba8bd8ac18aad65ee6c6a254e2e74876db3 (patch) | |
tree | eb3d0ffaf53c3f7ec6083752c2097cecd1cb892a /arch/sparc/kernel/helpers.S | |
parent | d670bd4f803c8b646acd20f3ba21e65458293faf (diff) | |
download | linux-fsl-qoriq-a88b5ba8bd8ac18aad65ee6c6a254e2e74876db3.tar.xz |
sparc,sparc64: unify kernel/
o Move all files from sparc64/kernel/ to sparc/kernel
- rename as appropriate
o Update sparc/Makefile to the changes
o Update sparc/kernel/Makefile to include the sparc64 files
NOTE: This commit changes link order on sparc64!
Link order had to change for either of sparc32 and sparc64.
And assuming sparc64 see more testing than sparc32 change link
order on sparc64 where issues will be caught faster.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/helpers.S')
-rw-r--r-- | arch/sparc/kernel/helpers.S | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/arch/sparc/kernel/helpers.S b/arch/sparc/kernel/helpers.S new file mode 100644 index 0000000..314dd0c --- /dev/null +++ b/arch/sparc/kernel/helpers.S @@ -0,0 +1,63 @@ + .align 32 + .globl __flushw_user + .type __flushw_user,#function +__flushw_user: + rdpr %otherwin, %g1 + brz,pn %g1, 2f + clr %g2 +1: save %sp, -128, %sp + rdpr %otherwin, %g1 + brnz,pt %g1, 1b + add %g2, 1, %g2 +1: sub %g2, 1, %g2 + brnz,pt %g2, 1b + restore %g0, %g0, %g0 +2: retl + nop + .size __flushw_user,.-__flushw_user + + /* Flush %fp and %i7 to the stack for all register + * windows active inside of the cpu. This allows + * show_stack_trace() to avoid using an expensive + * 'flushw'. + */ + .globl stack_trace_flush + .type stack_trace_flush,#function +stack_trace_flush: + rdpr %pstate, %o0 + wrpr %o0, PSTATE_IE, %pstate + + rdpr %cwp, %g1 + rdpr %canrestore, %g2 + sub %g1, 1, %g3 + +1: brz,pn %g2, 2f + sub %g2, 1, %g2 + wrpr %g3, %cwp + stx %fp, [%sp + STACK_BIAS + RW_V9_I6] + stx %i7, [%sp + STACK_BIAS + RW_V9_I7] + ba,pt %xcc, 1b + sub %g3, 1, %g3 + +2: wrpr %g1, %cwp + wrpr %o0, %pstate + + retl + nop + .size stack_trace_flush,.-stack_trace_flush + +#ifdef CONFIG_SMP + .globl hard_smp_processor_id + .type hard_smp_processor_id,#function +hard_smp_processor_id: +#endif + .globl real_hard_smp_processor_id + .type real_hard_smp_processor_id,#function +real_hard_smp_processor_id: + __GET_CPUID(%o0) + retl + nop +#ifdef CONFIG_SMP + .size hard_smp_processor_id,.-hard_smp_processor_id +#endif + .size real_hard_smp_processor_id,.-real_hard_smp_processor_id |