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* sysdeps/unix/sysv/linux/arm/kernel-features.h

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(__ASSUME_SIGFRAME_V2): Define for 2.6.18 and later.
	* sysdeps/unix/sysv/linux/arm/eabi/sigrestorer.S
	(__default_sa_restorer): Rename to __default_sa_restorer_v1.
	Don't define if __ASSUME_SIGFRAME_V2.
	(__default_rt_sa_restorer): Rename to
	__default_rt_sa_restorer_v1.  Don't define if
	__ASSUME_SIGFRAME_V2.
	(__default_sa_restorer_v2, __default_rt_sa_restorer_v2): New.
	* sysdeps/unix/sysv/linux/arm/nptl/Versions
	(__default_sa_restorer_v1, __default_rt_sa_restorer_v1,
	__default_sa_restorer_v2, __default_rt_sa_restorer_v2): Add to
	GLIBC_PRIVATE.
	* sysdeps/unix/sysv/linux/arm/sigaction.c [__ARM_EABI__]
	(__default_sa_restorer_v1, __default_sa_restorer_v2,
	__default_rt_sa_restorer_v1, __default_rt_sa_restorer_v2):
	Declare.
	(__default_sa_restorer, __default_rt_sa_restorer): Define as
	macros depending on kernel version.
This commit is contained in:
Daniel Jacobowitz 2007-05-23 17:33:17 +00:00
parent 7a30cb8323
commit 99e5e16c5c
5 changed files with 76 additions and 3 deletions
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22
ChangeLog.arm
View File

@ -1,3 +1,25 @@
2007-05-23 Joseph Myers <joseph@codesourcery.com>
* sysdeps/unix/sysv/linux/arm/kernel-features.h
(__ASSUME_SIGFRAME_V2): Define for 2.6.18 and later.
* sysdeps/unix/sysv/linux/arm/eabi/sigrestorer.S
(__default_sa_restorer): Rename to __default_sa_restorer_v1.
Don't define if __ASSUME_SIGFRAME_V2.
(__default_rt_sa_restorer): Rename to
__default_rt_sa_restorer_v1. Don't define if
__ASSUME_SIGFRAME_V2.
(__default_sa_restorer_v2, __default_rt_sa_restorer_v2): New.
* sysdeps/unix/sysv/linux/arm/nptl/Versions
(__default_sa_restorer_v1, __default_rt_sa_restorer_v1,
__default_sa_restorer_v2, __default_rt_sa_restorer_v2): Add to
GLIBC_PRIVATE.
* sysdeps/unix/sysv/linux/arm/sigaction.c [__ARM_EABI__]
(__default_sa_restorer_v1, __default_sa_restorer_v2,
__default_rt_sa_restorer_v1, __default_rt_sa_restorer_v2):
Declare.
(__default_sa_restorer, __default_rt_sa_restorer): Define as
macros depending on kernel version.
2007-01-23 Daniel Jacobowitz <dan@codesourcery.com> 2007-01-23 Daniel Jacobowitz <dan@codesourcery.com>
* sysdeps/unix/sysv/linux/arm/sysdep.h (PTR_MANGLE, PTR_DEMANGLE): * sysdeps/unix/sysv/linux/arm/sysdep.h (PTR_MANGLE, PTR_DEMANGLE):

31
sysdeps/unix/sysv/linux/arm/eabi/sigrestorer.S
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@ -29,24 +29,49 @@
Start the unwind tables at least one instruction before the signal Start the unwind tables at least one instruction before the signal
trampoline, because the unwinder will assume we are returning after trampoline, because the unwinder will assume we are returning after
a call site. */ a call site.
Because the signal frame layout changed in 2.6.18, we provide two
copies of these functions with different unwind information. */
#ifndef __ASSUME_SIGFRAME_V2
.fnstart .fnstart
.save {r0-r15} .save {r0-r15}
.pad #12 .pad #12
nop nop
ENTRY(__default_sa_restorer) ENTRY(__default_sa_restorer_v1)
mov r7, $SYS_ify(sigreturn)
swi 0x0
.fnend
#endif
.fnstart
.save {r0-r15}
.pad #32
nop
ENTRY(__default_sa_restorer_v2)
mov r7, $SYS_ify(sigreturn) mov r7, $SYS_ify(sigreturn)
swi 0x0 swi 0x0
.fnend .fnend
#ifdef __NR_rt_sigreturn #ifdef __NR_rt_sigreturn
#ifndef __ASSUME_SIGFRAME_V2
.fnstart .fnstart
.save {r0-r15} .save {r0-r15}
.pad #168 .pad #168
nop nop
ENTRY(__default_rt_sa_restorer) ENTRY(__default_rt_sa_restorer_v1)
mov r7, $SYS_ify(rt_sigreturn)
swi 0x0
.fnend
#endif
.fnstart
.save {r0-r15}
.pad #160
nop
ENTRY(__default_rt_sa_restorer_v2)
mov r7, $SYS_ify(rt_sigreturn) mov r7, $SYS_ify(rt_sigreturn)
swi 0x0 swi 0x0
.fnend .fnend

5
sysdeps/unix/sysv/linux/arm/kernel-features.h
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@ -46,4 +46,9 @@
# define __ASSUME_VFORK_SYSCALL 1 # define __ASSUME_VFORK_SYSCALL 1
#endif #endif
/* The signal frame layout changed in 2.6.18. */
#if __LINUX_KERNEL_VERSION >= 132626
# define __ASSUME_SIGFRAME_V2 1
#endif
#include_next <kernel-features.h> #include_next <kernel-features.h>

2
sysdeps/unix/sysv/linux/arm/nptl/Versions
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@ -2,5 +2,7 @@ libc {
GLIBC_PRIVATE { GLIBC_PRIVATE {
# A copy of sigaction lives in NPTL, and needs these. # A copy of sigaction lives in NPTL, and needs these.
__default_sa_restorer; __default_rt_sa_restorer; __default_sa_restorer; __default_rt_sa_restorer;
__default_sa_restorer_v1; __default_rt_sa_restorer_v1;
__default_sa_restorer_v2; __default_rt_sa_restorer_v2;
} }
} }

19
sysdeps/unix/sysv/linux/arm/sigaction.c
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@ -36,8 +36,27 @@ int __libc_missing_rt_sigs;
#define SA_RESTORER 0x04000000 #define SA_RESTORER 0x04000000
#ifdef __ARM_EABI__
extern void __default_sa_restorer_v1(void);
extern void __default_sa_restorer_v2(void);
extern void __default_rt_sa_restorer_v1(void);
extern void __default_rt_sa_restorer_v2(void);
# ifdef __ASSUME_SIGFRAME_V2
# define __default_sa_restorer __default_sa_restorer_v2
# define __default_rt_sa_restorer __default_rt_sa_restorer_v2
# else
# include <ldsodefs.h>
# define __default_sa_restorer (GLRO(dl_osversion) >= 0x020612 \
? __default_sa_restorer_v2 \
: __default_sa_restorer_v1)
# define __default_rt_sa_restorer (GLRO(dl_osversion) >= 0x020612 \
? __default_rt_sa_restorer_v2 \
: __default_rt_sa_restorer_v1)
# endif
#else
extern void __default_sa_restorer(void); extern void __default_sa_restorer(void);
extern void __default_rt_sa_restorer(void); extern void __default_rt_sa_restorer(void);
#endif
/* When RT signals are in use we need to use a different return stub. */ /* When RT signals are in use we need to use a different return stub. */
#ifdef __NR_rt_sigreturn #ifdef __NR_rt_sigreturn