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Update.
1998-07-16 20:01 Ulrich Drepper <drepper@cygnus.com> * debug/Makefile (routines): Add backtracesymsfd. Add rules to generate libSegFault. * debug/Versions: Add __backtrace_symbols_fd and backtrace_symbols_fd. * debug/execinfo.h: Declare backtrace_symbols_fd. * sysdeps/generic/backtracesymsfd.c: New file. * sysdeps/generic/elf/backtracesymsfd.c: New file. * sysdeps/generic/segfault.c: New file. * sysdeps/generic/sigcontextinfo.h: New file. * sysdeps/unix/sysv/linux/i386/sigcontextinfo.h: New file. * sysdeps/generic/elf/backtracesyms.c: Remove unneeded +.
This commit is contained in:
Ulrich Drepper
parent
7a2fd787a7
commit
107f813141
127
CONFORMANCE
Normal file
127
CONFORMANCE
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@ -0,0 +1,127 @@
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Conformance of the GNU libc with various standards
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==================================================
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The GNU libc is designed to be conformant with existing standard as
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far as possible. TO ensure this I've run various tests. The results
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are presented here.
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Open Group's hdrchk
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-------------------
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The hdrchk test suite is available from the Open Group at
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ftp://ftp.rdg.opengroup.org/pub/unsupported/stdtools/hdrchk/
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I've last run the suite on 1998-07-08 on a Linux/ix86 system with the
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following results [*]:
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FIPS No reported problems
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POSIX90 No reported problems
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XPG3 No reported problems
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XPG4 The wide character I/O stuff is missing in glibc.
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*** Starting wchar.h
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Missing: extern wint_t fgetwc();
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Missing: extern wchar_t *fgetws();
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Missing: extern wint_t fputwc();
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Missing: extern int fputws();
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Missing: extern wint_t getwc();
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Missing: extern wint_t getwchar();
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Missing: extern wint_t putwc();
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Missing: extern wchar_t putwchar();
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Missing: extern wint_t ungetwc();
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Missing: extern size_t wcsftime();
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*** Completed wchar.h
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Beside this a problem in stdio.h is reported but
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this is only because the scripts don't understand
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the sometimes complex constructs in the header.
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POSIX96 Same as UNIX98 [see below].
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UNIX98 Quite a lot of problems, almost all due to limitations
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of the Linux kernel (2.1.108):
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*** Starting mqueue.h
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Missing #include file: mqueue.h
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*** Completed mqueue.h
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*** Starting semaphore.h
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Missing: #define SEM_FAILED (-1)
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Missing: extern int sem_close();
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Missing: extern sem_t *sem_open();
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Missing: extern int sem_unlink();
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*** Completed semaphore.h
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*** Starting signal.h
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Missing: #define SIGSYS (-1)
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*** Completed signal.h
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*** Starting sys/mman.h
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Missing: extern int shm_open();
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Missing: extern int shm_unlink();
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*** Completed sys/mman.h
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*** Starting sys/stat.h
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Missing: #define S_TYPEISMQ (-1)
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Missing: #define S_TYPEISSEM (-1)
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Missing: #define S_TYPEISSHM (-1)
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*** Completed sys/stat.h
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*** Starting sys/types.h
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Missing: typedef <type> clockid_t;
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Missing: typedef <type> timer_t;
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*** Completed sys/types.h
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*** Starting time.h
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Missing: #define CLOCK_REALTIME (-1)
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Missing: #define TIMER_ABSTIME (-1)
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Missing: extern int clock_getres();
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Missing: extern int clock_gettime();
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Missing: extern int clock_settime();
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Missing: struct itimerspec { <members> };
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Missing: extern int timer_create();
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Missing: extern int timer_delete();
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Missing: extern int timer_getoverrun();
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Missing: extern int timer_gettime();
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Missing: extern int timer_settime();
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*** Completed time.h
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*** Starting unistd.h
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Missing: #define _POSIX_MESSAGE_PASSING (-1)
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Missing: #define _POSIX_SEMAPHORES (-1)
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Missing: #define _POSIX_SHARED_MEMORY_OBJECTS (-1)
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Missing: #define _POSIX_TIMERS (-1)
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*** Completed unistd.h
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*** Starting wchar.h
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Missing: extern wint_t fgetwc();
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Missing: extern wchar_t *fgetws();
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Missing: extern wint_t fputwc();
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Missing: extern int fputws();
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Missing: extern int fwide();
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Missing: extern int fwprintf();
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Missing: extern int fwscanf();
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Missing: extern wint_t getwc();
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Missing: extern wint_t getwchar();
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Missing: extern wint_t putwc();
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Missing: extern wchar_t putwchar();
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Missing: extern int swprintf();
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Missing: extern int swscanf();
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Missing: extern wint_t ungetwc();
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Missing: extern int vfwprintf();
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Missing: extern int vswprintf();
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Missing: extern int vwprintf();
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Missing: extern size_t wcsftime();
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Missing: extern wchar_t *wcswcs();
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Missing: extern int wprintf();
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Missing: extern int wscanf();
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*** Completed wchar.h
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Only the `wchar.h' problems result from glibc
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defficiencies since we still don't support wide
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character I/O.
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[*] Since the scripts are not clever enough for the way gcc handles
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include files (namely, putting some of them in gcc-local directory) I
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copied over the iso646.h, float.h, and stddef.h headers and ignored the
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problems resulting from the splitted limits.h file).
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14
ChangeLog
14
ChangeLog
@ -1,3 +1,17 @@
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1998-07-16 20:01 Ulrich Drepper <drepper@cygnus.com>
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* debug/Makefile (routines): Add backtracesymsfd.
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Add rules to generate libSegFault.
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* debug/Versions: Add __backtrace_symbols_fd and backtrace_symbols_fd.
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* debug/execinfo.h: Declare backtrace_symbols_fd.
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* sysdeps/generic/backtracesymsfd.c: New file.
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* sysdeps/generic/elf/backtracesymsfd.c: New file.
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* sysdeps/generic/segfault.c: New file.
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* sysdeps/generic/sigcontextinfo.h: New file.
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* sysdeps/unix/sysv/linux/i386/sigcontextinfo.h: New file.
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* sysdeps/generic/elf/backtracesyms.c: Remove unneeded +.
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1998-07-16 19:27 Ulrich Drepper <drepper@cygnus.com>
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1998-07-16 19:27 Ulrich Drepper <drepper@cygnus.com>
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* elf/rtld.c (process_envvars): Also recognize on as LD_BIND_NOW value.
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* elf/rtld.c (process_envvars): Also recognize on as LD_BIND_NOW value.
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@ -23,10 +23,21 @@ subdir := debug
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headers := execinfo.h
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headers := execinfo.h
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routines := backtrace backtracesyms
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routines := backtrace backtracesyms backtracesymsfd
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CFLAGS-backtrace.c = -fno-omit-frame-pointer
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CFLAGS-backtrace.c = -fno-omit-frame-pointer
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tests = backtrace-tst
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tests = backtrace-tst
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extra-libs = libSegFault
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extra-libs-others = $(extra-libs)
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libSegFault-routines = segfault
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libSegFault-inhibit-o = $(filter-out .os,$(object-suffixes))
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include ../Rules
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include ../Rules
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# Depend on libc.so so a DT_NEEDED is generated in the shared objects.
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# This ensures they will load libc.so for needed symbols if loaded by
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# a statically-linked program that hasn't already loaded it.
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$(objpfx)libSegFault.so: $(common-objpfx)libc.so $(common-objpfx)elf/ld.so
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@ -1,9 +1,9 @@
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libc {
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libc {
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GLIBC_2.1 {
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GLIBC_2.1 {
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# functions used in other libraries
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# functions used in other libraries
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__backtrace; __backtrace_symbols;
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__backtrace; __backtrace_symbols; __backtrace_symbols_fd;
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# b*
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# b*
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backtrace; backtrace_symbols;
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backtrace; backtrace_symbols; backtrace_symbols_fd;
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}
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}
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}
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}
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@ -34,6 +34,15 @@ extern int backtrace __P ((void **__array, int __size));
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extern char **__backtrace_symbols __P ((void *__const *__array, int __size));
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extern char **__backtrace_symbols __P ((void *__const *__array, int __size));
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extern char **backtrace_symbols __P ((void *__const *__array, int __size));
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extern char **backtrace_symbols __P ((void *__const *__array, int __size));
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/* This function is similar to backtrace_symbols() but it writes the result
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immediately to a file and can therefore also be used in situations where
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malloc() is not usable anymore. */
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extern void __backtrace_symbols_fd __P ((void *__const *__array, int __size,
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int __fd));
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extern void backtrace_symbols_fd __P ((void *__const *__array, int __size,
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int __fd));
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__END_DECLS
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__END_DECLS
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#endif /* execinfo.h */
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#endif /* execinfo.h */
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61
sysdeps/generic/backtracesymsfd.c
Normal file
61
sysdeps/generic/backtracesymsfd.c
Normal file
@ -0,0 +1,61 @@
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/* Write formatted list with names for addresses in backtrace to a file.
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Copyright (C) 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <execinfo.h>
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#include <string.h>
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#include <sys/uio.h>
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#include <stdio-common/_itoa.h>
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#if __ELF_NATIVE_CLASS == 32
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# define WORD_WIDTH 8
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#else
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/* We assyme 64bits. */
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# define WORD_WIDTH 16
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#endif
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void
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__backtrace_symbols_fd (array, size, fd)
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void *const *array;
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int size;
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int fd;
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{
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struct iovec iov[3];
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int cnt;
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for (cnt = 0; cnt < size; ++cnt)
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{
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char buf[WORD_WIDTH];
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iov[0].iov_base = (void *) "[0x";
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iov[0].iov_len = 3;
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iov[1].iov_base = _itoa_word ((unsigned long int) array[cnt],
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&buf[WORD_WIDTH], 16, 0);
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iov[1].iov_len = &buf[WORD_WIDTH] - (char *) iov[1].iov_base;
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iov[2].iov_base = (void *) "]\n";
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iov[2].iov_len = 2;
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__writev (fd, iov, 3);
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}
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}
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weak_alias (__backtrace_symbols_fd, backtrace_symbols_fd)
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@ -55,9 +55,9 @@ __backtrace_symbols (array, size)
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+ (info[cnt].dli_sname
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+ (info[cnt].dli_sname
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? strlen (info[cnt].dli_sname) + 3 + WORD_WIDTH + 3
|
? strlen (info[cnt].dli_sname) + 3 + WORD_WIDTH + 3
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: 1)
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: 1)
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+ WORD_WIDTH + 6);
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+ WORD_WIDTH + 5);
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else
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else
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total += 6 + WORD_WIDTH;
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total += 5 + WORD_WIDTH;
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}
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}
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/* Allocate memory for the result. */
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/* Allocate memory for the result. */
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@ -80,7 +80,7 @@ __backtrace_symbols (array, size)
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else
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else
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sprintf (buf, "-0x%x", info[cnt].dli_saddr - array[cnt]);
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sprintf (buf, "-0x%x", info[cnt].dli_saddr - array[cnt]);
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last += 1 + sprintf (last, "%s%s%s%s%s[+%p]",
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last += 1 + sprintf (last, "%s%s%s%s%s[%p]",
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info[cnt].dli_fname ?: "",
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info[cnt].dli_fname ?: "",
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info[cnt].dli_sname ? "(" : "",
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info[cnt].dli_sname ? "(" : "",
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info[cnt].dli_sname ?: "",
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info[cnt].dli_sname ?: "",
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@ -89,7 +89,7 @@ __backtrace_symbols (array, size)
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array[cnt]);
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array[cnt]);
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}
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}
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else
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else
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last += 1 + sprintf (last, "[+%p]", array[cnt]);
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last += 1 + sprintf (last, "[%p]", array[cnt]);
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}
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}
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}
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}
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109
sysdeps/generic/elf/backtracesymsfd.c
Normal file
109
sysdeps/generic/elf/backtracesymsfd.c
Normal file
@ -0,0 +1,109 @@
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|
/* Write formatted list with names for addresses in backtrace to a file.
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Copyright (C) 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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||||||
|
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
|
||||||
|
|
||||||
|
The GNU C Library is free software; you can redistribute it and/or
|
||||||
|
modify it under the terms of the GNU Library General Public License as
|
||||||
|
published by the Free Software Foundation; either version 2 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
|
||||||
|
Library General Public License for more details.
|
||||||
|
|
||||||
|
You should have received a copy of the GNU Library General Public
|
||||||
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
||||||
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||||
|
Boston, MA 02111-1307, USA. */
|
||||||
|
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|
#include <execinfo.h>
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#include <string.h>
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#include <sys/uio.h>
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#include <stdio-common/_itoa.h>
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#include <elf/ldsodefs.h>
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|
#if __ELF_NATIVE_CLASS == 32
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# define WORD_WIDTH 8
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|
#else
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|
/* We assyme 64bits. */
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# define WORD_WIDTH 16
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|
#endif
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|
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|
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|
void
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|
__backtrace_symbols_fd (array, size, fd)
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|
void *const *array;
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|
int size;
|
||||||
|
int fd;
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||||||
|
{
|
||||||
|
struct iovec iov[9];
|
||||||
|
int cnt;
|
||||||
|
|
||||||
|
for (cnt = 0; cnt < size; ++cnt)
|
||||||
|
{
|
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|
char buf[WORD_WIDTH];
|
||||||
|
Dl_info info;
|
||||||
|
size_t last = 0;
|
||||||
|
|
||||||
|
if (_dl_addr (array[cnt], &info)
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|
&& info.dli_fname && info.dli_fname[0] != '\0')
|
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|
{
|
||||||
|
/* Name of the file. */
|
||||||
|
iov[0].iov_base = (void *) info.dli_fname;
|
||||||
|
iov[0].iov_len = strlen (info.dli_fname);
|
||||||
|
last = 1;
|
||||||
|
|
||||||
|
/* Symbol name. */
|
||||||
|
if (info.dli_sname != NULL)
|
||||||
|
{
|
||||||
|
char buf2[WORD_WIDTH];
|
||||||
|
size_t diff;
|
||||||
|
|
||||||
|
iov[1].iov_base = (void *) "(";
|
||||||
|
iov[1].iov_len = 1;
|
||||||
|
iov[2].iov_base = (void *) info.dli_sname;
|
||||||
|
iov[2].iov_len = strlen (info.dli_sname);
|
||||||
|
|
||||||
|
if (array[cnt] >= (void *) info.dli_saddr)
|
||||||
|
{
|
||||||
|
iov[3].iov_base = (void *) "+0x";
|
||||||
|
diff = array[cnt] - info.dli_saddr;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
iov[3].iov_base = (void *) "-0x";
|
||||||
|
diff = info.dli_saddr - array[cnt];
|
||||||
|
}
|
||||||
|
iov[3].iov_len = 3;
|
||||||
|
|
||||||
|
iov[4].iov_base = _itoa_word ((unsigned long int) diff,
|
||||||
|
&buf2[WORD_WIDTH], 16, 0);
|
||||||
|
iov[4].iov_len = &buf2[WORD_WIDTH] - (char *) iov[4].iov_base;
|
||||||
|
|
||||||
|
iov[5].iov_base = (void *) ")";
|
||||||
|
iov[5].iov_len = 1;
|
||||||
|
|
||||||
|
last = 6;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
iov[last].iov_base = (void *) "[0x";
|
||||||
|
iov[last].iov_len = 3;
|
||||||
|
++last;
|
||||||
|
|
||||||
|
iov[last].iov_base = _itoa_word ((unsigned long int) array[cnt],
|
||||||
|
&buf[WORD_WIDTH], 16, 0);
|
||||||
|
iov[last].iov_len = &buf[WORD_WIDTH] - (char *) iov[last].iov_base;
|
||||||
|
++last;
|
||||||
|
|
||||||
|
iov[last].iov_base = (void *) "]\n";
|
||||||
|
iov[last].iov_len = 2;
|
||||||
|
++last;
|
||||||
|
|
||||||
|
__writev (fd, iov, last);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
weak_alias (__backtrace_symbols_fd, backtrace_symbols_fd)
|
||||||
165
sysdeps/generic/segfault.c
Normal file
165
sysdeps/generic/segfault.c
Normal file
@ -0,0 +1,165 @@
|
|||||||
|
/* Catch segmentation faults and print backtrace.
|
||||||
|
Copyright (C) 1998 Free Software Foundation, Inc.
|
||||||
|
This file is part of the GNU C Library.
|
||||||
|
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
|
||||||
|
|
||||||
|
The GNU C Library is free software; you can redistribute it and/or
|
||||||
|
modify it under the terms of the GNU Library General Public License as
|
||||||
|
published by the Free Software Foundation; either version 2 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
|
||||||
|
Library General Public License for more details.
|
||||||
|
|
||||||
|
You should have received a copy of the GNU Library General Public
|
||||||
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
||||||
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||||
|
Boston, MA 02111-1307, USA. */
|
||||||
|
|
||||||
|
#include <execinfo.h>
|
||||||
|
#include <fcntl.h>
|
||||||
|
#include <signal.h>
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <unistd.h>
|
||||||
|
|
||||||
|
/* This file defines macros to access the content of the sigcontext element
|
||||||
|
passed up by the signal handler. */
|
||||||
|
#include <sigcontextinfo.h>
|
||||||
|
|
||||||
|
/* This is a global variable set at program start time. It marks the
|
||||||
|
highest used stack address. */
|
||||||
|
extern void *__libc_stack_end;
|
||||||
|
|
||||||
|
|
||||||
|
/* This implementation assumes a stack layout that matches the defaults
|
||||||
|
used by gcc's `__builtin_frame_address' and `__builtin_return_address'
|
||||||
|
(FP is the frame pointer register):
|
||||||
|
|
||||||
|
+-----------------+ +-----------------+
|
||||||
|
FP -> | previous FP --------> | previous FP ------>...
|
||||||
|
| | | |
|
||||||
|
| return address | | return address |
|
||||||
|
+-----------------+ +-----------------+
|
||||||
|
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* Get some notion of the current stack. Need not be exactly the top
|
||||||
|
of the stack, just something somewhere in the current frame. */
|
||||||
|
#ifndef CURRENT_STACK_FRAME
|
||||||
|
# define CURRENT_STACK_FRAME ({ char __csf; &__csf; })
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* By default we assume that the stack grows downward. */
|
||||||
|
#ifndef INNER_THAN
|
||||||
|
# define INNER_THAN <
|
||||||
|
#endif
|
||||||
|
|
||||||
|
struct layout
|
||||||
|
{
|
||||||
|
struct layout *next;
|
||||||
|
void *return_address;
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
static void
|
||||||
|
handle (int fd, void *addr)
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/* This function is called when a segmentation fault is caught. The system
|
||||||
|
is in an instable state now. This means especially that malloc() might
|
||||||
|
not work anymore. */
|
||||||
|
static void
|
||||||
|
catch_segfault (int signal, SIGCONTEXT ctx)
|
||||||
|
{
|
||||||
|
struct layout *current;
|
||||||
|
void *top_frame;
|
||||||
|
void *top_stack;
|
||||||
|
const char *fname;
|
||||||
|
int fd;
|
||||||
|
void **arr;
|
||||||
|
size_t cnt;
|
||||||
|
|
||||||
|
/* This is the name of the file we are writing to. If none is given
|
||||||
|
or we cannot write to this file write to stderr. */
|
||||||
|
fd = 2;
|
||||||
|
fname = getenv ("SEGFAULT_OUTPUT_NAME");
|
||||||
|
if (fname != NULL && fname[0] != '\0')
|
||||||
|
{
|
||||||
|
fd = open (fname, O_TRUNC | O_WRONLY | O_CREAT);
|
||||||
|
if (fd == -1)
|
||||||
|
fd = 2;
|
||||||
|
}
|
||||||
|
|
||||||
|
#define WRITE_STRING(s) write (fd, s, sizeof (s) - 1)
|
||||||
|
WRITE_STRING ("*** Segmentation Fault\n");
|
||||||
|
WRITE_STRING ("Backtrace:\n");
|
||||||
|
|
||||||
|
top_frame = GET_FRAME (ctx);
|
||||||
|
top_stack = GET_STACK (ctx);
|
||||||
|
|
||||||
|
/* First count how many entries we'll have. */
|
||||||
|
cnt = 1;
|
||||||
|
current = (struct layout *) top_frame;
|
||||||
|
while (!((void *) current INNER_THAN top_stack
|
||||||
|
|| !((void *) current INNER_THAN __libc_stack_end)))
|
||||||
|
{
|
||||||
|
++cnt;
|
||||||
|
|
||||||
|
current = current->next;
|
||||||
|
}
|
||||||
|
|
||||||
|
arr = alloca (cnt * sizeof (void *));
|
||||||
|
|
||||||
|
/* First handle the program counter from the structure. */
|
||||||
|
arr[0] = GET_EIP (ctx);
|
||||||
|
|
||||||
|
current = (struct layout *) top_frame;
|
||||||
|
cnt = 1;
|
||||||
|
while (!((void *) current INNER_THAN top_stack
|
||||||
|
|| !((void *) current INNER_THAN __libc_stack_end)))
|
||||||
|
{
|
||||||
|
arr[cnt++] = current->return_address;
|
||||||
|
|
||||||
|
current = current->next;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Now generate nicely formatted output. */
|
||||||
|
__backtrace_symbols_fd (arr, cnt, fd);
|
||||||
|
|
||||||
|
/* Nothing else to do. */
|
||||||
|
_exit (128 + SIGSEGV);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
static void
|
||||||
|
__attribute__ ((constructor))
|
||||||
|
install_handler (void)
|
||||||
|
{
|
||||||
|
struct sigaction sa;
|
||||||
|
|
||||||
|
sa.sa_handler = (void *) catch_segfault;
|
||||||
|
sigemptyset (&sa.sa_mask);
|
||||||
|
sa.sa_flags = SA_RESTART;
|
||||||
|
|
||||||
|
sigaction (SIGSEGV, &sa, NULL);
|
||||||
|
|
||||||
|
/* Maybe we are expected to use an alternative stack. */
|
||||||
|
if (getenv ("SEGFAULT_USE_ALTSTACK") != 0)
|
||||||
|
{
|
||||||
|
void *stack_mem = malloc (2 * SIGSTKSZ);
|
||||||
|
struct sigaltstack ss;
|
||||||
|
|
||||||
|
if (stack_mem != NULL)
|
||||||
|
{
|
||||||
|
ss.ss_sp = stack_mem;
|
||||||
|
ss.ss_flags = SS_ONSTACK;
|
||||||
|
ss.ss_size = 2 * SIGSTKSZ;
|
||||||
|
|
||||||
|
sigaltstack (&ss, NULL);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
24
sysdeps/generic/sigcontextinfo.h
Normal file
24
sysdeps/generic/sigcontextinfo.h
Normal file
@ -0,0 +1,24 @@
|
|||||||
|
/* Copyright (C) 1998 Free Software Foundation, Inc.
|
||||||
|
This file is part of the GNU C Library.
|
||||||
|
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
|
||||||
|
|
||||||
|
The GNU C Library is free software; you can redistribute it and/or
|
||||||
|
modify it under the terms of the GNU Library General Public License as
|
||||||
|
published by the Free Software Foundation; either version 2 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
|
||||||
|
Library General Public License for more details.
|
||||||
|
|
||||||
|
You should have received a copy of the GNU Library General Public
|
||||||
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
||||||
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||||
|
Boston, MA 02111-1307, USA. */
|
||||||
|
|
||||||
|
/* In general we cannot provide any information. */
|
||||||
|
#define SIGCONTEXT struct sigcontext *
|
||||||
|
#define GET_EIP(ctx) ((void *) 0)
|
||||||
|
#define GET_FRAME(ctx) ((void *) 0)
|
||||||
|
#define GET_STACK(ctx) ((void *) 0)
|
||||||
23
sysdeps/unix/sysv/linux/i386/sigcontextinfo.h
Normal file
23
sysdeps/unix/sysv/linux/i386/sigcontextinfo.h
Normal file
@ -0,0 +1,23 @@
|
|||||||
|
/* Copyright (C) 1998 Free Software Foundation, Inc.
|
||||||
|
This file is part of the GNU C Library.
|
||||||
|
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
|
||||||
|
|
||||||
|
The GNU C Library is free software; you can redistribute it and/or
|
||||||
|
modify it under the terms of the GNU Library General Public License as
|
||||||
|
published by the Free Software Foundation; either version 2 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
|
||||||
|
Library General Public License for more details.
|
||||||
|
|
||||||
|
You should have received a copy of the GNU Library General Public
|
||||||
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
||||||
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||||
|
Boston, MA 02111-1307, USA. */
|
||||||
|
|
||||||
|
#define SIGCONTEXT struct sigcontext
|
||||||
|
#define GET_EIP(ctx) ((void *) ctx.eip)
|
||||||
|
#define GET_FRAME(ctx) ((void *) ctx.ebp)
|
||||||
|
#define GET_STACK(ctx) ((void *) ctx.esp_at_signal)
|
||||||
Loading…
Reference in New Issue
Block a user