[PATCH] Save NVGPRS in 32-bit signal frame

David Woodhouse dwmw2 at infradead.org
Fri Nov 25 04:36:20 EST 2005

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 at infradead.org>

diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index 8fed953..036b71d 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -368,7 +368,7 @@ save_user_nvgprs_cont:
 	b	6b
-	ld	r8,TI_SIGFRAME(r12)
+	lwz	r8,TI_SIGFRAME(r12)
 .macro savewords start, end
   1:	stw \start,4*(\start)(r8)
@@ -386,11 +386,11 @@ save_user_nvgprs:
 	li	r3,11		/* SIGSEGV */
-	ld	r4,TI_TASK(r12)
+	lwz	r4,TI_TASK(r12)
 	bl	force_sigsegv
 	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


More information about the Linuxppc-dev mailing list