* sysdeps/powerpc/powerpc64/setjmp-common.S: Make sure pointer guard

	value doesn't survive in a registers when the function returns.
	* sysdeps/powerpc/powerpc32/fpu/setjmp-common.S: Likewise.
	* sysdeps/powerpc/powerpc32/setjmp-common.S: Likewise.

2005-12-30  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h: Define
	PTR_MANGLE2.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h: Define
	PTR_MANGLE2 and PTR_DEMANGLE2.
	* sysdeps/powerpc/powerpc64/__longjmp-common.S: Use PTR_DEMANGLE2.
	* sysdeps/powerpc/powerpc64/setjmp-common.S: Use PTR_MANGLE2.
	* sysdeps/powerpc/powerpc32/fpu/setjmp-common.S: Likewise.
	* sysdeps/powerpc/powerpc32/setjmp-common.S: Likewise.

2005-12-30  Ulrich Drepper  <drepper@redhat.com>

6 files changed, 23 insertions, 16 deletions

diff --git a/sysdeps/powerpc/powerpc32/fpu/setjmp-common.S b/sysdeps/powerpc/powerpc32/fpu/setjmp-common.S
index dae79046d3..3afcf66fb9 100644
--- a/sysdeps/powerpc/powerpc32/fpu/setjmp-common.S
+++ b/sysdeps/powerpc/powerpc32/fpu/setjmp-common.S
@@ -1,5 +1,5 @@
 /* setjmp for PowerPC.
-   Copyright (C) 1995-99, 2000, 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 1995-2000, 2003, 2004, 2005 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -34,7 +34,7 @@ ENTRY (BP_SYM (__sigsetjmp))
 
 #ifdef PTR_MANGLE
 	mr   r5,r1
-	PTR_MANGLE(r5, r10)
+	PTR_MANGLE(r5, r6)
 	stw  r5,(JB_GPR1*4)(3)
 #else
 	stw  r1,(JB_GPR1*4)(3)
@@ -43,7 +43,7 @@ ENTRY (BP_SYM (__sigsetjmp))
 	stw  r14,((JB_GPRS+0)*4)(3)
 	stfd fp14,((JB_FPRS+0*2)*4)(3)
 #ifdef PTR_MANGLE
-	PTR_MANGLE (r0, r10)
+	PTR_MANGLE2 (r0, r6)
 #endif
 	stw  r0,(JB_LR*4)(3)
 	stw  r15,((JB_GPRS+1)*4)(3)
@@ -104,9 +104,9 @@ ENTRY (BP_SYM (__sigsetjmp))
 	lwz     r5,0(r5)
 #  endif
 # else
-	lis	r5,_dl_hwcap@ha
-	lwz     r5,_dl_hwcap@l(r5)
-#endif
+	lis	r6,_dl_hwcap@ha
+	lwz     r5,_dl_hwcap@l(r6)
+# endif
 	andis.	r5,r5,(PPC_FEATURE_HAS_ALTIVEC >> 16)
 	beq	L(no_vmx)
 	la	r5,((JB_VRS)*4)(3)
diff --git a/sysdeps/powerpc/powerpc32/setjmp-common.S b/sysdeps/powerpc/powerpc32/setjmp-common.S
index 35740923d2..69d36cce03 100644
--- a/sysdeps/powerpc/powerpc32/setjmp-common.S
+++ b/sysdeps/powerpc/powerpc32/setjmp-common.S
@@ -43,7 +43,8 @@ ENTRY (BP_SYM (__sigsetjmp))
 	mflr r0
 	stw  r14,((JB_GPRS+0)*4)(3)
 #ifdef PTR_MANGLE
-	PTR_MANGLE (r0, r10)
+	PTR_MANGLE2 (r0, r10)
+	li   r10,0
 #endif
 	stw  r0,(JB_LR*4)(3)
 	stw  r15,((JB_GPRS+1)*4)(3)
diff --git a/sysdeps/powerpc/powerpc64/__longjmp-common.S b/sysdeps/powerpc/powerpc64/__longjmp-common.S
index 82d1abd3ce..bf7e32446d 100644
--- a/sysdeps/powerpc/powerpc64/__longjmp-common.S
+++ b/sysdeps/powerpc/powerpc64/__longjmp-common.S
@@ -132,7 +132,7 @@ L(no_vmx):
 	ld r20,((JB_GPRS+6)*8)(r3)
 	lfd fp20,((JB_FPRS+6)*8)(r3)
 #ifdef PTR_DEMANGLE
-	PTR_DEMANGLE (r0, r25)
+	PTR_DEMANGLE2 (r0, r25)
 #endif
 	mtlr r0
 /* 	std r2,40(r1)	Restore the TOC save area.  */
diff --git a/sysdeps/powerpc/powerpc64/setjmp-common.S b/sysdeps/powerpc/powerpc64/setjmp-common.S
index 9660302ba5..11ecedf2c1 100644
--- a/sysdeps/powerpc/powerpc64/setjmp-common.S
+++ b/sysdeps/powerpc/powerpc64/setjmp-common.S
@@ -48,7 +48,7 @@ JUMPTARGET(GLUE(__sigsetjmp,_ent)):
 	CHECK_BOUNDS_BOTH_WIDE_LIT (r3, r8, r9, JB_SIZE)
 #ifdef PTR_MANGLE
 	mr   r5, r1
-	PTR_MANGLE (r5, r10)
+	PTR_MANGLE (r5, r6)
 	std  r5,(JB_GPR1*8)(3)
 #else
 	std  r1,(JB_GPR1*8)(3)
@@ -63,7 +63,7 @@ JUMPTARGET(GLUE(__sigsetjmp,_ent)):
 	std  r14,((JB_GPRS+0)*8)(3)
 	stfd fp14,((JB_FPRS+0)*8)(3)
 #ifdef PTR_MANGLE
-	PTR_MANGLE (r0, r10)
+	PTR_MANGLE2 (r0, r6)
 #endif
 	std  r0,(JB_LR*8)(3)
 	std  r15,((JB_GPRS+1)*8)(3)
@@ -103,14 +103,14 @@ JUMPTARGET(GLUE(__sigsetjmp,_ent)):
 	std  r31,((JB_GPRS+17)*8)(3)
 	stfd fp31,((JB_FPRS+17)*8)(3)
 #ifndef __NO_VMX__
-	ld    r5,.LC__dl_hwcap@toc(r2)
+	ld    r6,.LC__dl_hwcap@toc(r2)
 # ifdef SHARED
 	/* Load _rtld-global._dl_hwcap.  */
-	ld    r5,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET(r5)
+	ld    r6,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET(r6)
 # else
-	ld    r5,0(r5) /* Load extern _dl_hwcap.  */
+	ld    r6,0(r6) /* Load extern _dl_hwcap.  */
 # endif
-	andis.  r5,r5,(PPC_FEATURE_HAS_ALTIVEC >> 16)
+	andis.  r6,r6,(PPC_FEATURE_HAS_ALTIVEC >> 16)
 	beq	L(no_vmx)
 	la	r5,((JB_VRS)*8)(3)
 	andi.	r6,r5,0xf
@@ -185,6 +185,8 @@ L(aligned_save_vmx):
 	stvx	30,0,r5
 	stvx	31,0,r6
 L(no_vmx):
+#else
+	li	r6,0
 #endif
 #if defined NOT_IN_libc && defined IS_IN_rtld
 	li	r3,0
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h b/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h
index 0d231912ba..470da5aa6e 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h
@@ -283,9 +283,10 @@
 #  define PTR_MANGLE(reg, tmpreg) \
 	lwz	tmpreg,POINTER_GUARD(r2); \
 	xor	reg,tmpreg,reg
-#  define PTR_DEMANGLE(reg, tmpreg) PTR_MANGLE (reg, tmpreg)
-#  define PTR_DEMANGLE2(reg, tmpreg) \
+#  define PTR_MANGLE2(reg, tmpreg) \
 	xor	reg,tmpreg,reg
+#  define PTR_DEMANGLE(reg, tmpreg) PTR_MANGLE (reg, tmpreg)
+#  define PTR_DEMANGLE2(reg, tmpreg) PTR_MANGLE2 (reg, tmpreg)
 # else
 #  define PTR_MANGLE(var) \
   (var) = (__typeof (var)) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ())
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h b/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h
index e0b4cb3eed..858b5c4757 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h
@@ -297,7 +297,10 @@
 #  define PTR_MANGLE(reg, tmpreg) \
 	ld	tmpreg,POINTER_GUARD(r13); \
 	xor	reg,tmpreg,reg
+#  define PTR_MANGLE2(reg, tmpreg) \
+	xor	reg,tmpreg,reg
 #  define PTR_DEMANGLE(reg, tmpreg) PTR_MANGLE (reg, tmpreg)
+#  define PTR_DEMANGLE2(reg, tmpreg) PTR_MANGLE2 (reg, tmpreg)
 # else
 #  define PTR_MANGLE(var) \
   (var) = (void *) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ())