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2003-04-15  Ulrich Drepper  <drepper@redhat.com>

	* elf/elf.h: Define AT_SYSINFO_EH_FRAME.
	* sysdeps/generic/dl-sysdep.c (_dl_sysdep_start): Handle
	AT_SYSINFO_EH_FRAME.
	(_dl_show_auxv):Display AT_SYSINFO_EH_FRAME value.
	* sysdeps/generic/ldsodefs.h [NEED_DL_SYSINFO] (struct rtld_global):
	Add _dl_sysinfo_eh_frame field.
	* elf/dl-support.c [NEED_DL_SYSINFO]: Define _dl_sysinfo_eh_frame.
	* sysdeps/generic/libc-start.c [NEED_DL_SYSINFO] Define eh_obj
	variable.
	[NEED_DL_SYSINFO] (LIBC_START_MAIN): Call __register_frame_info_bases
	if _dl_sysinfo_eh_frame is non-NULL.

	* Makeconfig (gnulib): Add -lgcc_eh.

	* config.h.in: Define HAVE_FORCED_UNWIND.
This commit is contained in:
Ulrich Drepper
2003-04-15 22:46:40 +00:00
parent 482eb33c43
commit 162434a682
9 changed files with 70 additions and 23 deletions
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18
ChangeLog
View File

@@ -1,3 +1,21 @@
2003-04-15 Ulrich Drepper <drepper@redhat.com>
* elf/elf.h: Define AT_SYSINFO_EH_FRAME.
* sysdeps/generic/dl-sysdep.c (_dl_sysdep_start): Handle
AT_SYSINFO_EH_FRAME.
(_dl_show_auxv):Display AT_SYSINFO_EH_FRAME value.
* sysdeps/generic/ldsodefs.h [NEED_DL_SYSINFO] (struct rtld_global):
Add _dl_sysinfo_eh_frame field.
* elf/dl-support.c [NEED_DL_SYSINFO]: Define _dl_sysinfo_eh_frame.
* sysdeps/generic/libc-start.c [NEED_DL_SYSINFO] Define eh_obj
variable.
[NEED_DL_SYSINFO] (LIBC_START_MAIN): Call __register_frame_info_bases
if _dl_sysinfo_eh_frame is non-NULL.
* Makeconfig (gnulib): Add -lgcc_eh.
* config.h.in: Define HAVE_FORCED_UNWIND.
2003-04-15 Steven Munroe <sjmunroe@us.ibm.com> 2003-04-15 Steven Munroe <sjmunroe@us.ibm.com>
* sysdeps/powerpc/powerpc64/strcmp.S: Convert to full 64-bit. * sysdeps/powerpc/powerpc64/strcmp.S: Convert to full 64-bit.

2
Makeconfig
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@@ -505,7 +505,7 @@ link-libc-bounded = $(common-objpfx)libc_b.a $(gnulib) $(common-objpfx)libc_b.a
link-extra-libs-bounded = $(foreach lib,$(LDLIBS-$(@F:%-bp=%)),$(common-objpfx)$(lib)_b.a) link-extra-libs-bounded = $(foreach lib,$(LDLIBS-$(@F:%-bp=%)),$(common-objpfx)$(lib)_b.a)
ifndef gnulib ifndef gnulib
gnulib := -lgcc gnulib := -lgcc -lgcc_eh
endif endif
ifeq ($(elf),yes) ifeq ($(elf),yes)
+preinit = $(addprefix $(csu-objpfx),crti.o) +preinit = $(addprefix $(csu-objpfx),crti.o)

3
config.h.in
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@@ -189,6 +189,9 @@
/* Mach/i386 specific: define if the `i386_set_gdt' RPC is available. */ /* Mach/i386 specific: define if the `i386_set_gdt' RPC is available. */
#undef HAVE_I386_SET_GDT #undef HAVE_I386_SET_GDT
/* Defined if forced unwind support is available. */
#undef HAVE_FORCED_UNWIND
/* /*
*/ */

2
elf/dl-support.c
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@@ -127,6 +127,8 @@ size_t _dl_phnum;
#ifdef NEED_DL_SYSINFO #ifdef NEED_DL_SYSINFO
/* Needed for improved syscall handling on at least x86/Linux. */ /* Needed for improved syscall handling on at least x86/Linux. */
uintptr_t _dl_sysinfo = DL_SYSINFO_DEFAULT; uintptr_t _dl_sysinfo = DL_SYSINFO_DEFAULT;
/* Address of the unwind info for the vsyscall page. */
uintptr_t _dl_sysinfo_eh_frame;
#endif #endif
/* During the program run we must not modify the global data of /* During the program run we must not modify the global data of

1
elf/elf.h
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@@ -949,6 +949,7 @@ typedef struct
/* Pointer to the global system page used for system calls and other /* Pointer to the global system page used for system calls and other
nice things. */ nice things. */
#define AT_SYSINFO 32 #define AT_SYSINFO 32
#define AT_SYSINFO_EH_FRAME 33
/* Note section contents. Each entry in the note section begins with /* Note section contents. Each entry in the note section begins with

4
nptl/ChangeLog
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@@ -1,3 +1,7 @@
2003-04-15 Ulrich Drepper <drepper@redhat.com>
* pthreadP.h: Move THREAD_ATOMIC_* replacements to the top.
2003-04-14 Ulrich Drepper <drepper@redhat.com> 2003-04-14 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: Don't * sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: Don't

48
sysdeps/generic/dl-sysdep.c
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@@ -139,6 +139,9 @@ _dl_sysdep_start (void **start_argptr,
case AT_SYSINFO: case AT_SYSINFO:
GL(dl_sysinfo) = av->a_un.a_val; GL(dl_sysinfo) = av->a_un.a_val;
break; break;
case AT_SYSINFO_EH_FRAME:
GL(dl_sysinfo_eh_frame) = av->a_un.a_val;
break;
#endif #endif
#ifdef DL_PLATFORM_AUXV #ifdef DL_PLATFORM_AUXV
DL_PLATFORM_AUXV DL_PLATFORM_AUXV
@@ -160,7 +163,7 @@ _dl_sysdep_start (void **start_argptr,
SEE (EGID, gid, egid); SEE (EGID, gid, egid);
#endif #endif
/* If one of the two pairs of IDs does not mattch this is a setuid /* If one of the two pairs of IDs does not match this is a setuid
or setgid run. */ or setgid run. */
INTUSE(__libc_enable_secure) = uid | gid; INTUSE(__libc_enable_secure) = uid | gid;
@@ -228,27 +231,28 @@ _dl_show_auxv (void)
enum { dec, hex, str } form; enum { dec, hex, str } form;
} auxvars[] = } auxvars[] =
{ {
[AT_EXECFD - 2] = { "AT_EXECFD: ", dec }, [AT_EXECFD - 2] = { "AT_EXECFD: ", dec },
[AT_PHDR - 2] = { "AT_PHDR: 0x", hex }, [AT_PHDR - 2] = { "AT_PHDR: 0x", hex },
[AT_PHENT - 2] = { "AT_PHENT: ", dec }, [AT_PHENT - 2] = { "AT_PHENT: ", dec },
[AT_PHNUM - 2] = { "AT_PHNUM: ", dec }, [AT_PHNUM - 2] = { "AT_PHNUM: ", dec },
[AT_PAGESZ - 2] = { "AT_PAGESZ: ", dec }, [AT_PAGESZ - 2] = { "AT_PAGESZ: ", dec },
[AT_BASE - 2] = { "AT_BASE: 0x", hex }, [AT_BASE - 2] = { "AT_BASE: 0x", hex },
[AT_FLAGS - 2] = { "AT_FLAGS: 0x", hex }, [AT_FLAGS - 2] = { "AT_FLAGS: 0x", hex },
[AT_ENTRY - 2] = { "AT_ENTRY: 0x", hex }, [AT_ENTRY - 2] = { "AT_ENTRY: 0x", hex },
[AT_NOTELF - 2] = { "AT_NOTELF: ", hex }, [AT_NOTELF - 2] = { "AT_NOTELF: ", hex },
[AT_UID - 2] = { "AT_UID: ", dec }, [AT_UID - 2] = { "AT_UID: ", dec },
[AT_EUID - 2] = { "AT_EUID: ", dec }, [AT_EUID - 2] = { "AT_EUID: ", dec },
[AT_GID - 2] = { "AT_GID: ", dec }, [AT_GID - 2] = { "AT_GID: ", dec },
[AT_EGID - 2] = { "AT_EGID: ", dec }, [AT_EGID - 2] = { "AT_EGID: ", dec },
[AT_PLATFORM - 2] = { "AT_PLATFORM: ", str }, [AT_PLATFORM - 2] = { "AT_PLATFORM: ", str },
[AT_HWCAP - 2] = { "AT_HWCAP: ", hex }, [AT_HWCAP - 2] = { "AT_HWCAP: ", hex },
[AT_CLKTCK - 2] = { "AT_CLKTCK: ", dec }, [AT_CLKTCK - 2] = { "AT_CLKTCK: ", dec },
[AT_FPUCW - 2] = { "AT_FPUCW: ", hex }, [AT_FPUCW - 2] = { "AT_FPUCW: ", hex },
[AT_DCACHEBSIZE - 2] = { "AT_DCACHEBSIZE: 0x", hex }, [AT_DCACHEBSIZE - 2] = { "AT_DCACHEBSIZE: 0x", hex },
[AT_ICACHEBSIZE - 2] = { "AT_ICACHEBSIZE: 0x", hex }, [AT_ICACHEBSIZE - 2] = { "AT_ICACHEBSIZE: 0x", hex },
[AT_UCACHEBSIZE - 2] = { "AT_UCACHEBSIZE: 0x", hex }, [AT_UCACHEBSIZE - 2] = { "AT_UCACHEBSIZE: 0x", hex },
[AT_SYSINFO - 2] = { "AT_SYSINFO: 0x", hex } [AT_SYSINFO - 2] = { "AT_SYSINFO: 0x", hex },
[AT_SYSINFO_EH_FRAME - 2] = { "AT_SYSINFO_EH_FRAME: 0x", hex }
}; };
unsigned int idx = (unsigned int) (av->a_type - 2); unsigned int idx = (unsigned int) (av->a_type - 2);

3
sysdeps/generic/ldsodefs.h
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@@ -394,6 +394,9 @@ struct rtld_global
#ifdef NEED_DL_SYSINFO #ifdef NEED_DL_SYSINFO
/* Syscall handling improvements. This is very specific to x86. */ /* Syscall handling improvements. This is very specific to x86. */
EXTERN uintptr_t _dl_sysinfo; EXTERN uintptr_t _dl_sysinfo;
/* Address of the unwind info for the vsyscall page. */
EXTERN uintptr_t _dl_sysinfo_eh_frame;
#endif #endif
#ifdef SHARED #ifdef SHARED

12
sysdeps/generic/libc-start.c
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@@ -28,6 +28,11 @@ extern void __libc_init_first (int argc, char **argv, char **envp);
extern int __libc_multiple_libcs; extern int __libc_multiple_libcs;
extern void *__libc_stack_end; extern void *__libc_stack_end;
#ifdef NEED_DL_SYSINFO
# include "unwind-dw2-fde.h"
static struct object eh_obj;
#endif
#include <tls.h> #include <tls.h>
#ifndef SHARED #ifndef SHARED
# include <dl-osinfo.h> # include <dl-osinfo.h>
@@ -150,6 +155,13 @@ LIBC_START_MAIN (int (*main) (int, char **, char ** MAIN_AUXVEC_DECL),
__libc_check_standard_fds (); __libc_check_standard_fds ();
#endif #endif
#ifdef NEED_DL_SYSINFO
/* Register the kernel's unwind table. */
if (GL(dl_sysinfo_eh_frame) != 0)
INTUSE(__register_frame_info_bases) ((void *) GL(dl_sysinfo_eh_frame),
&eh_obj, 0, 0);
#endif
/* Register the destructor of the dynamic linker if there is any. */ /* Register the destructor of the dynamic linker if there is any. */
if (__builtin_expect (rtld_fini != NULL, 1)) if (__builtin_expect (rtld_fini != NULL, 1))
__cxa_atexit ((void (*) (void *)) rtld_fini, NULL, NULL); __cxa_atexit ((void (*) (void *)) rtld_fini, NULL, NULL);