Add ___longjmp_chk support for powerpc{32,64}.

6 files changed, 116 insertions, 5 deletions

diff --git a/ChangeLog b/ChangeLog
index b5cc481159..2c1d66ca43 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2009-05-22  Andreas Schwab  <schwab@linux-m68k.org>
+
+	* sysdeps/powerpc/powerpc32/____longjmp_chk.S: New file.
+	* sysdeps/powerpc/powerpc64/____longjmp_chk.S: New file.
+	* sysdeps/powerpc/powerpc32/__longjmp-common.S: Use CHECK_SP if
+	defined.
+	* sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S: Likewise.
+	* sysdeps/powerpc/powerpc64/__longjmp-common.S: Likewise.
+
 2009-05-22  Jakub Jelinek  <jakub@redhat.com>
 
 	* sysdeps/unix/sysv/linux/accept4.c: Include kernel-features.h.
diff --git a/sysdeps/powerpc/powerpc32/____longjmp_chk.S b/sysdeps/powerpc/powerpc32/____longjmp_chk.S
new file mode 100644
index 0000000000..5c1f648661
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/____longjmp_chk.S
@@ -0,0 +1,37 @@
+/* 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
+
+#define CHECK_SP(reg) \
+	cmplw	reg, r1;				\
+	bge+	.Lok;					\
+	lis	r3,.LC0@ha;				\
+	la	r3,.LC0@l(r3);				\
+	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 2093b7e337..7b1c017837 100644
--- a/sysdeps/powerpc/powerpc32/__longjmp-common.S
+++ b/sysdeps/powerpc/powerpc32/__longjmp-common.S
@@ -1,5 +1,5 @@
 /* longjmp for PowerPC.
-   Copyright (C) 1995-1997, 1999-2001, 2003, 2004, 2005, 2006
+   Copyright (C) 1995-1997, 1999-2001, 2003, 2004, 2005, 2006, 2009
 	Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
@@ -31,7 +31,7 @@
 ENTRY (BP_SYM (__longjmp))
 	CHECK_BOUNDS_BOTH_WIDE_LIT (r3, r8, r9, JB_SIZE)
 
-#ifdef PTR_DEMANGLE
+#if defined PTR_DEMANGLE || defined CHECK_SP
 	lwz r24,(JB_GPR1*4)(r3)
 #else
 	lwz r1,(JB_GPR1*4)(r3)
@@ -45,9 +45,17 @@ 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
 	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 f9f010fcac..f105815b9c 100644
--- a/sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S
+++ b/sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S
@@ -114,7 +114,7 @@ L(aligned_restore_vmx):
 	lvx	v31,0,r6
 L(no_vmx):
 #endif
-#ifdef PTR_DEMANGLE
+#if defined PTR_DEMANGLE || defined CHECK_SP
 	lwz r24,(JB_GPR1*4)(r3)
 #else
 	lwz r1,(JB_GPR1*4)(r3)
@@ -135,9 +135,17 @@ 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
 	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)
diff --git a/sysdeps/powerpc/powerpc64/____longjmp_chk.S b/sysdeps/powerpc/powerpc64/____longjmp_chk.S
new file mode 100644
index 0000000000..56549021aa
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/____longjmp_chk.S
@@ -0,0 +1,39 @@
+/* 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"
+	.section .toc,"aw"
+.LC1:
+	.tc .LC0[TC],.LC0
+	.text
+
+#define __longjmp ____longjmp_chk
+
+#define CHECK_SP(reg) \
+	cmpld	reg, r1;				\
+	bge+	.Lok;					\
+	ld	r3,.LC1@toc(2);				\
+	bl	HIDDEN_JUMPTARGET (__fortify_fail);	\
+.Lok:
+
+#include <__longjmp-common.S>
diff --git a/sysdeps/powerpc/powerpc64/__longjmp-common.S b/sysdeps/powerpc/powerpc64/__longjmp-common.S
index 19b2849c01..1be1f8f3bb 100644
--- a/sysdeps/powerpc/powerpc64/__longjmp-common.S
+++ b/sysdeps/powerpc/powerpc64/__longjmp-common.S
@@ -107,12 +107,22 @@ L(aligned_restore_vmx):
 	lvx	v31,0,r6
 L(no_vmx):
 #endif
-#ifdef PTR_DEMANGLE
+#if defined PTR_DEMANGLE || defined CHECK_SP
 	ld r22,(JB_GPR1*8)(r3)
-	PTR_DEMANGLE3 (r1, r22, r25)
 #else
 	ld r1,(JB_GPR1*8)(r3)
 #endif
+#ifdef PTR_DEMANGLE
+# ifdef CHECK_SP
+	PTR_DEMANGLE3 (r22, r22, r25)
+# else
+	PTR_DEMANGLE3 (r1, r22, r25)
+# endif
+#endif
+#ifdef CHECK_SP
+	CHECK_SP (r22)
+	mr r1,r22
+#endif
 	ld r2,(JB_GPR2*8)(r3)
 	ld r0,(JB_LR*8)(r3)
 	ld r14,((JB_GPRS+0)*8)(r3)