Add sigstack handling to Linux ____longjmp_chk on powerpc.

3 files changed, 16 insertions, 70 deletions

diff --git a/sysdeps/powerpc/powerpc32/____longjmp_chk.S b/sysdeps/powerpc/powerpc32/____longjmp_chk.S
deleted file mode 100644
index 510ce5250d..0000000000
--- a/sysdeps/powerpc/powerpc32/____longjmp_chk.S
+++ /dev/null
@@ -1,56 +0,0 @@
-/* Copyright (C) 2009 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
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-#include <sysdep.h>
-#include <rtld-global-offsets.h>
-
-	.section .rodata.str1.1,"aMS",@progbits,1
-.LC0:
-	.string "longjmp causes uninitialized stack frame"
-	.text
-
-#define __longjmp ____longjmp_chk
-
-#ifdef PIC
-# ifdef HAVE_ASM_PPC_REL16
-#  define LOAD_ARG \
-	bcl	20,31,1f;				\
-1:	mflr	r3;					\
-	addis	r3,r3,_GLOBAL_OFFSET_TABLE_-1b@ha;	\
-	addi	r3,r3,_GLOBAL_OFFSET_TABLE_-1b@l;	\
-	lwz	r3,.LC0@got(r3)
-# else
-#  define LOAD_ARG \
-	bl	_GLOBAL_OFFSET_TABLE_-4@local;		\
-	mflr	r3;					\
-	lwz	r3,.LC0@got(r3)
-# endif
-#else
-# define LOAD_ARG \
-	lis	r3,.LC0@ha;				\
-	la	r3,.LC0@l(r3)
-#endif
-
-#define CHECK_SP(reg) \
-	cmplw	reg, r1;				\
-	bge+	.Lok;					\
-	LOAD_ARG;					\
-	bl	HIDDEN_JUMPTARGET (__fortify_fail);	\
-.Lok:
-
-#include <__longjmp-common.S>
diff --git a/sysdeps/powerpc/powerpc32/__longjmp-common.S b/sysdeps/powerpc/powerpc32/__longjmp-common.S
index 7b1c017837..955161ef2b 100644
--- a/sysdeps/powerpc/powerpc32/__longjmp-common.S
+++ b/sysdeps/powerpc/powerpc32/__longjmp-common.S
@@ -33,6 +33,13 @@ ENTRY (BP_SYM (__longjmp))
 
 #if defined PTR_DEMANGLE || defined CHECK_SP
 	lwz r24,(JB_GPR1*4)(r3)
+# ifdef CHECK_SP
+#  ifdef PTR_DEMANGLE
+	PTR_DEMANGLE3 (r24, r24, r25)
+#  endif
+	CHECK_SP (r24)
+	mr r1,r24
+# endif
 #else
 	lwz r1,(JB_GPR1*4)(r3)
 #endif
@@ -45,17 +52,11 @@ ENTRY (BP_SYM (__longjmp))
 	lwz r19,((JB_GPRS+5)*4)(r3)
 	lwz r20,((JB_GPRS+6)*4)(r3)
 #ifdef PTR_DEMANGLE
-# ifdef CHECK_SP
-	PTR_DEMANGLE3 (r24, r24, r25)
-# else
+# ifndef CHECK_SP
 	PTR_DEMANGLE3 (r1, r24, r25)
 # endif
 	PTR_DEMANGLE2 (r0, r25)
 #endif
-#ifdef CHECK_SP
-	CHECK_SP (r24)
-	mr r1,r24
-#endif
 	mtlr r0
 	lwz r21,((JB_GPRS+7)*4)(r3)
 	lwz r22,((JB_GPRS+8)*4)(r3)
diff --git a/sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S b/sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S
index f105815b9c..04ed6da68b 100644
--- a/sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S
+++ b/sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S
@@ -116,6 +116,13 @@ L(no_vmx):
 #endif
 #if defined PTR_DEMANGLE || defined CHECK_SP
 	lwz r24,(JB_GPR1*4)(r3)
+# ifdef CHECK_SP
+#  ifdef PTR_DEMANGLE
+	PTR_DEMANGLE3 (r24, r24, r25)
+#  endif
+	CHECK_SP (r24)
+	mr r1,r24
+# endif
 #else
 	lwz r1,(JB_GPR1*4)(r3)
 #endif
@@ -135,17 +142,11 @@ L(no_vmx):
 	lwz r20,((JB_GPRS+6)*4)(r3)
 	lfd fp20,((JB_FPRS+6*2)*4)(r3)
 #ifdef PTR_DEMANGLE
-# ifdef CHECK_SP
-	PTR_DEMANGLE3 (r24, r24, r25)
-# else
+# ifndef CHECK_SP
 	PTR_DEMANGLE3 (r1, r24, r25)
 # endif
 	PTR_DEMANGLE2 (r0, r25)
 #endif
-#ifdef CHECK_SP
-	CHECK_SP (r24)
-	mr r1,r24
-#endif
 	mtlr r0
 	lwz r21,((JB_GPRS+7)*4)(r3)
 	lfd fp21,((JB_FPRS+7*2)*4)(r3)