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Add ____longjmp_chk for SH.

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Following the previous changes for x86 and x86-64.
This commit is contained in:
Kaz Kojima 2009-05-18 15:44:09 -07:00 committed by Ulrich Drepper
parent 5078fff6c4
commit 04733592f8
4 changed files with 91 additions and 1 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2009-05-18 Kaz Kojima <kkojima@rr.iij4u.or.jp>
* sysdeps/sh/____longjmp_chk.S: New file.
* sysdeps/sh/sh3/__longjmp.S: If CHECK_SP is defined, use it.
* sysdeps/sh/sh4/__longjmp.S: Likewise.
2009-05-18 Jakub Jelinek <jakub@redhat.com>
Ulrich Drepper <drepper@redhat.com>

70
sysdeps/sh/____longjmp_chk.S Normal file
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@ -0,0 +1,70 @@
/* 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. */
.section .rodata.str1.1,"aMS",@progbits,1
.type longjmp_msg,@object
longjmp_msg:
.string "longjmp causes uninitialized stack frame"
.size longjmp_msg, .-longjmp_msg
.text
#define __longjmp ____longjmp_chk
#ifdef PIC
# define CALL_FAIL \
mov.l .Lfail, r1; \
mov.l .Lstr, r4; \
mova .Lgot, r0; \
mov.l .Lgot, r12; \
add r0, r12; \
bsrf r1; \
add r12, r4; \
.Lfail0: \
bra 0f; \
nop; \
.align 2; \
.Lgot: \
.long _GLOBAL_OFFSET_TABLE_; \
.Lstr: \
.long longjmp_msg@GOTOFF; \
.Lfail: \
.long __GI___fortify_fail@PLT-(.Lfail0-.); \
0:
#else
# define CALL_FAIL \
mov.l .Lfail, r1; \
mov.l .Lstr, r4; \
jsr @r1; \
nop; \
bra 0f; \
nop; \
.align 2; \
.Lstr: \
.long longjmp_msg; \
.Lfail: \
.long __fortify_fail; \
0:
#endif
#define CHECK_SP(reg) \
cmp/hs r15, reg; \
bt .Lok; \
CALL_FAIL \
.Lok:
#include <__longjmp.S>

9
sysdeps/sh/sh3/__longjmp.S
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@ -1,5 +1,5 @@
/* longjmp for SH.
Copyright (C) 1999, 2000, 2005, 2006 Free Software Foundation, Inc.
Copyright (C) 1999, 2000, 2005, 2006, 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
@ -42,6 +42,9 @@ ENTRY (__longjmp)
mov r2, r14
mov.l @r4+, r2
PTR_DEMANGLE2 (r2, r1)
# ifdef CHECK_SP
CHECK_SP (r2)
# endif
mov r2, r15
mov.l @r4+, r2
PTR_DEMANGLE2 (r2, r1)
@ -49,6 +52,10 @@ ENTRY (__longjmp)
mov #0, r1
#else
mov.l @r4+, r14
# ifdef CHECK_SP
mov.l @r4, r2
CHECK_SP (r2)
# endif
mov.l @r4+, r15
lds.l @r4+, pr
#endif

7
sysdeps/sh/sh4/__longjmp.S
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@ -42,6 +42,9 @@ ENTRY (__longjmp)
mov r2, r14
mov.l @r4+, r2
PTR_DEMANGLE2 (r2, r1)
# ifdef CHECK_SP
CHECK_SP (r2)
# endif
mov r2, r15
mov.l @r4+, r2
PTR_DEMANGLE2 (r2, r1)
@ -49,6 +52,10 @@ ENTRY (__longjmp)
mov #0, r1
#else
mov.l @r4+, r14
# ifdef CHECK_SP
mov.l @r4, r2
CHECK_SP (r2)
# endif
mov.l @r4+, r15
lds.l @r4+, pr
#endif