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[PATCH] Fix code that saves NVGPRS in 32-bit signal frame

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On Thu, 2005-11-24 at 12:51 +0000, David Woodhouse wrote:
> Somehow this one slipped through the cracks; when we ended up in
> do_signal() on a 32-bit kernel but without having the caller-saved
> registers into the regs, we didn't set the TIF_SAVE_NVGPRS flag to
> ensure they got saved later.

Oh, and if we actually set the flag, then we fairly quickly find out
that I was a bit overzealous in copying code from entry_64.S ... :)

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
David Woodhouse 2005-11-24 17:36:20 +00:00 committed by Paul Mackerras
parent 9687c58759
commit 623703f620
1 changed files with 3 additions and 3 deletions
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6
arch/powerpc/kernel/entry_32.S
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@ -368,7 +368,7 @@ save_user_nvgprs_cont:
b 6b b 6b
save_user_nvgprs: save_user_nvgprs:
ld r8,TI_SIGFRAME(r12) lwz r8,TI_SIGFRAME(r12)
.macro savewords start, end .macro savewords start, end
1: stw \start,4*(\start)(r8) 1: stw \start,4*(\start)(r8)
@ -386,11 +386,11 @@ save_user_nvgprs:
save_user_nvgprs_fault: save_user_nvgprs_fault:
li r3,11 /* SIGSEGV */ li r3,11 /* SIGSEGV */
ld r4,TI_TASK(r12) lwz r4,TI_TASK(r12)
bl force_sigsegv bl force_sigsegv
rlwinm r12,r1,0,0,(31-THREAD_SHIFT) /* current_thread_info() */ rlwinm r12,r1,0,0,(31-THREAD_SHIFT) /* current_thread_info() */
ld r9,TI_FLAGS(r12) lwz r9,TI_FLAGS(r12)
b save_user_nvgprs_cont b save_user_nvgprs_cont
#ifdef SHOW_SYSCALLS #ifdef SHOW_SYSCALLS