aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--ChangeLog18
-rw-r--r--Makeconfig2
-rw-r--r--config.h.in3
-rw-r--r--elf/dl-support.c2
-rw-r--r--elf/elf.h1
-rw-r--r--nptl/ChangeLog4
-rw-r--r--sysdeps/generic/dl-sysdep.c48
-rw-r--r--sysdeps/generic/ldsodefs.h3
-rw-r--r--sysdeps/generic/libc-start.c12
9 files changed, 70 insertions, 23 deletions
diff --git a/ChangeLog b/ChangeLog
index a6d460e5d6..a45f728fe5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -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>
* sysdeps/powerpc/powerpc64/strcmp.S: Convert to full 64-bit.
diff --git a/Makeconfig b/Makeconfig
index 60d351946f..2245b9dc7d 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -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)$(lib)_b.a)
ifndef gnulib
-gnulib := -lgcc
+gnulib := -lgcc -lgcc_eh
endif
ifeq ($(elf),yes)
+preinit = $(addprefix $(csu-objpfx),crti.o)
diff --git a/config.h.in b/config.h.in
index 29b809e8cf..d01b90a597 100644
--- a/config.h.in
+++ b/config.h.in
@@ -189,6 +189,9 @@
/* Mach/i386 specific: define if the `i386_set_gdt' RPC is available. */
#undef HAVE_I386_SET_GDT
+/* Defined if forced unwind support is available. */
+#undef HAVE_FORCED_UNWIND
+
/*
*/
diff --git a/elf/dl-support.c b/elf/dl-support.c
index efeddb6fe1..1e547d3b4d 100644
--- a/elf/dl-support.c
+++ b/elf/dl-support.c
@@ -127,6 +127,8 @@ size_t _dl_phnum;
#ifdef NEED_DL_SYSINFO
/* Needed for improved syscall handling on at least x86/Linux. */
uintptr_t _dl_sysinfo = DL_SYSINFO_DEFAULT;
+/* Address of the unwind info for the vsyscall page. */
+uintptr_t _dl_sysinfo_eh_frame;
#endif
/* During the program run we must not modify the global data of
diff --git a/elf/elf.h b/elf/elf.h
index 4a1f0fb4e0..69adde46ed 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -949,6 +949,7 @@ typedef struct
/* Pointer to the global system page used for system calls and other
nice things. */
#define AT_SYSINFO 32
+#define AT_SYSINFO_EH_FRAME 33
/* Note section contents. Each entry in the note section begins with
diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index c457f39db9..394e224e1e 100644
--- a/nptl/ChangeLog
+++ b/nptl/ChangeLog
@@ -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>
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: Don't
diff --git a/sysdeps/generic/dl-sysdep.c b/sysdeps/generic/dl-sysdep.c
index 4d80dd7689..2c73b64f90 100644
--- a/sysdeps/generic/dl-sysdep.c
+++ b/sysdeps/generic/dl-sysdep.c
@@ -139,6 +139,9 @@ _dl_sysdep_start (void **start_argptr,
case AT_SYSINFO:
GL(dl_sysinfo) = av->a_un.a_val;
break;
+ case AT_SYSINFO_EH_FRAME:
+ GL(dl_sysinfo_eh_frame) = av->a_un.a_val;
+ break;
#endif
#ifdef DL_PLATFORM_AUXV
DL_PLATFORM_AUXV
@@ -160,7 +163,7 @@ _dl_sysdep_start (void **start_argptr,
SEE (EGID, gid, egid);
#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. */
INTUSE(__libc_enable_secure) = uid | gid;
@@ -228,27 +231,28 @@ _dl_show_auxv (void)
enum { dec, hex, str } form;
} auxvars[] =
{
- [AT_EXECFD - 2] = { "AT_EXECFD: ", dec },
- [AT_PHDR - 2] = { "AT_PHDR: 0x", hex },
- [AT_PHENT - 2] = { "AT_PHENT: ", dec },
- [AT_PHNUM - 2] = { "AT_PHNUM: ", dec },
- [AT_PAGESZ - 2] = { "AT_PAGESZ: ", dec },
- [AT_BASE - 2] = { "AT_BASE: 0x", hex },
- [AT_FLAGS - 2] = { "AT_FLAGS: 0x", hex },
- [AT_ENTRY - 2] = { "AT_ENTRY: 0x", hex },
- [AT_NOTELF - 2] = { "AT_NOTELF: ", hex },
- [AT_UID - 2] = { "AT_UID: ", dec },
- [AT_EUID - 2] = { "AT_EUID: ", dec },
- [AT_GID - 2] = { "AT_GID: ", dec },
- [AT_EGID - 2] = { "AT_EGID: ", dec },
- [AT_PLATFORM - 2] = { "AT_PLATFORM: ", str },
- [AT_HWCAP - 2] = { "AT_HWCAP: ", hex },
- [AT_CLKTCK - 2] = { "AT_CLKTCK: ", dec },
- [AT_FPUCW - 2] = { "AT_FPUCW: ", hex },
- [AT_DCACHEBSIZE - 2] = { "AT_DCACHEBSIZE: 0x", hex },
- [AT_ICACHEBSIZE - 2] = { "AT_ICACHEBSIZE: 0x", hex },
- [AT_UCACHEBSIZE - 2] = { "AT_UCACHEBSIZE: 0x", hex },
- [AT_SYSINFO - 2] = { "AT_SYSINFO: 0x", hex }
+ [AT_EXECFD - 2] = { "AT_EXECFD: ", dec },
+ [AT_PHDR - 2] = { "AT_PHDR: 0x", hex },
+ [AT_PHENT - 2] = { "AT_PHENT: ", dec },
+ [AT_PHNUM - 2] = { "AT_PHNUM: ", dec },
+ [AT_PAGESZ - 2] = { "AT_PAGESZ: ", dec },
+ [AT_BASE - 2] = { "AT_BASE: 0x", hex },
+ [AT_FLAGS - 2] = { "AT_FLAGS: 0x", hex },
+ [AT_ENTRY - 2] = { "AT_ENTRY: 0x", hex },
+ [AT_NOTELF - 2] = { "AT_NOTELF: ", hex },
+ [AT_UID - 2] = { "AT_UID: ", dec },
+ [AT_EUID - 2] = { "AT_EUID: ", dec },
+ [AT_GID - 2] = { "AT_GID: ", dec },
+ [AT_EGID - 2] = { "AT_EGID: ", dec },
+ [AT_PLATFORM - 2] = { "AT_PLATFORM: ", str },
+ [AT_HWCAP - 2] = { "AT_HWCAP: ", hex },
+ [AT_CLKTCK - 2] = { "AT_CLKTCK: ", dec },
+ [AT_FPUCW - 2] = { "AT_FPUCW: ", hex },
+ [AT_DCACHEBSIZE - 2] = { "AT_DCACHEBSIZE: 0x", hex },
+ [AT_ICACHEBSIZE - 2] = { "AT_ICACHEBSIZE: 0x", hex },
+ [AT_UCACHEBSIZE - 2] = { "AT_UCACHEBSIZE: 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);
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index e8234026e8..8be15b1cae 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -394,6 +394,9 @@ struct rtld_global
#ifdef NEED_DL_SYSINFO
/* Syscall handling improvements. This is very specific to x86. */
EXTERN uintptr_t _dl_sysinfo;
+
+ /* Address of the unwind info for the vsyscall page. */
+ EXTERN uintptr_t _dl_sysinfo_eh_frame;
#endif
#ifdef SHARED
diff --git a/sysdeps/generic/libc-start.c b/sysdeps/generic/libc-start.c
index b98f0a2aa0..318d070f4b 100644
--- a/sysdeps/generic/libc-start.c
+++ b/sysdeps/generic/libc-start.c
@@ -28,6 +28,11 @@ extern void __libc_init_first (int argc, char **argv, char **envp);
extern int __libc_multiple_libcs;
extern void *__libc_stack_end;
+#ifdef NEED_DL_SYSINFO
+# include "unwind-dw2-fde.h"
+static struct object eh_obj;
+#endif
+
#include <tls.h>
#ifndef SHARED
# include <dl-osinfo.h>
@@ -150,6 +155,13 @@ LIBC_START_MAIN (int (*main) (int, char **, char ** MAIN_AUXVEC_DECL),
__libc_check_standard_fds ();
#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. */
if (__builtin_expect (rtld_fini != NULL, 1))
__cxa_atexit ((void (*) (void *)) rtld_fini, NULL, NULL);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 02:08:50 +0000