+1998-08-26 17:48 Ulrich Drepper <drepper@cygnus.com>
+
+ * elf/dl-close.c (_dl_close): Move map->l_nsearchlist value into local
+ variable so that map can be freed.
+ Reported by Philippe Troin <phil@fifi.org>.
+
+ * elf/dl-open.c (dl_open_worker): Correct test for extending global
+ scope array.
+ Patch by Philippe Troin <phil@fifi.org>.
+
+1998-08-26 Geoff Keating <geoffk@ozemail.com.au>
+
+ * sysdeps/powerpc/register-dump.h: Rewrite. Much nicer this way.
+ Don't call writev() with a 100-element vector.
+ * sysdeps/generic/segfault.c (catch_segfault): Skip top-level NULL
+ return address.
+
+ * sysdeps/powerpc/elf/libc-start.c: Sync up with generic version.
+ In particular, set __libc_stack_end.
+ * sysdeps/powerpc/elf/start.S: Allow _init and _fini to be
+ undefined. Fix copyright notice.
+
+1998-08-25 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+
+ * math/Makefile (gmp-objs): New variable.
+ ($(objpfx)atest-exp, $(objpfx)atest-sincos, $(objpfx)atest-exp2):
+ Depend on it.
+ (tests): Add atest-exp atest-sincos atest-exp2.
+ (tests-static): Remove atest-exp atest-sincos atest-exp2.
+
1998-08-25 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/generic/dl-cache.c: Move static variable cache and cachesize
(_dl_unload_cache): New function.
* elf/Versions [libc GLIBC_2.1]: Add _dl_unload_cache.
* elf/dl-open.c (_dl_open): Unload map file before freeing the lock.
- * elf/rtld (dl_main): Unload map file before jumping to user code.
+ * elf/rtld.c (dl_main): Unload map file before jumping to user code.
* sysdeps/unix/sysv/linux/alpha/bits/fcntl.h: Define O_DIRECT.
Correct comment for O_LARGEFILE.
extern int _dl_starting_up;
weak_extern (_dl_starting_up)
extern int __libc_multiple_libcs;
+extern void *__libc_stack_end;
struct startup_info
{
rtld_fini = NULL;
}
- /* Register the destructor of the dynamic linker if there is any. */
- if (rtld_fini != NULL)
- atexit (rtld_fini);
+ /* Store something that has some relationship to the end of the
+ stack, for backtraces. This variable should be thread-specific. */
+ __libc_stack_end = stack_on_entry + 4;
/* Set the global _environ variable correctly. */
__environ = envp;
+ /* Register the destructor of the dynamic linker if there is any. */
+ if (rtld_fini != NULL)
+ atexit (rtld_fini);
+
/* Call the initializer of the libc. */
#ifdef PIC
if (_dl_debug_impcalls)
#endif
__libc_init_first (argc, argv, envp);
- /* Call the initializer of the program. */
+ /* Register the destructor of the program, if any. */
+ if (stinfo->fini)
+ atexit (stinfo->fini);
+
+ /* Call the initializer of the program, if any. */
#ifdef PIC
if (_dl_debug_impcalls)
_dl_debug_message (1, "\ninitialize program: ", argv[0], "\n\n", NULL);
#endif
- stinfo->init (argc, argv, __environ, auxvec);
-
- /* Register the destructor of the program. */
- atexit (stinfo->fini);
+ if (stinfo->init)
+ stinfo->init (argc, argv, __environ, auxvec);
#ifdef PIC
if (_dl_debug_impcalls)
/* Dump registers.
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
#include <sys/uio.h>
#include <stdio-common/_itoa.h>
-static const char *regnames[] =
-{
- "\nr0 =", " sp =", " r2 =", " r3 =", " r4 =", " r5 =",
- "\nr6 =", " r7 =", " r8 =", " r9 =", " r10=", " r11=",
- "\nr12=", " r13=", " r14=", " r15=", " r16=", " r17=",
- "\nr18=", " r19=", " r20=", " r21=", " r22=", " r23=",
- "\nr24=", " r25=", " r26=", " r27=", " r28=", " r29=",
- "\nr30=", " r31=", " nip=", " msr=", " r3*=", " ctr=",
- "\nlr =", " xer=", " ccr=", " mq =", " trap=",
- "\naddress of fault=", " dsisr=",
-};
+/* This prints out the information in the following form: */
+static const char dumpform[] =
+"Register dump:\n\
+r0 =0000000% sp =0000000% r2 =0000000% r3 =0000000% r4 =0000000% r5 =0000000%
+r6 =0000000% r7 =0000000% r8 =0000000% r9 =0000000% r10=0000000% r11=0000000%
+r12=0000000% r13=0000000% r14=0000000% r15=0000000% r16=0000000% r17=0000000%
+r18=0000000% r19=0000000% r20=0000000% r21=0000000% r22=0000000% r23=0000000%
+r24=0000000% r25=0000000% r26=0000000% r27=0000000% r28=0000000% r29=0000000%
+r30=0000000% r31=0000000% sr0=0000000% msr=0000000% r3*=0000000% ctr=0000000%
+lr =0000000% xer=0000000% ccr=0000000% sr1=0000000% trap=0000000%
+address of fault=0000000% dsisr=0000000%\n";
+/* Most of the fields are self-explanatory. 'sr0' is the next
+ instruction to execute, from SRR0, which may have some relationship
+ with the instruction that caused the exception. 'r3*' is the value
+ that will be returned in register 3 when the current system call
+ returns. 'sr1' is SRR1, bits 16-31 of which are copied from the MSR:
+
+ 16 - External interrupt enable
+ 17 - Privilege level (1=user, 0=supervisor)
+ 18 - FP available
+ 19 - Machine check enable (if clear, processor locks up on machine check)
+ 20 - FP exception mode bit 0 (FP exceptions recoverable)
+ 21 - Single-step trace enable
+ 22 - Branch trace enable
+ 23 - FP exception mode bit 1
+ 25 - exception prefix (if set, exceptions are taken from 0xFFFnnnnn,
+ otherwise from 0x000nnnnn).
+ 26 - Instruction address translation enabled.
+ 27 - Data address translation enabled.
+ 30 - Exception is recoverable (otherwise, don't try to return).
+ 31 - Little-endian mode enable.
+
+ 'Trap' is the address of the exception:
+
+ 00200 - Machine check exception (memory parity error, for instance)
+ 00300 - Data access exception (memory not mapped, see dsisr for why)
+ 00400 - Instruction access exception (memory not mapped)
+ 00500 - External interrupt
+ 00600 - Alignment exception (see dsisr for more information)
+ 00700 - Program exception (illegal/trap instruction, FP exception)
+ 00800 - FP unavailable (should not be seen by user code)
+ 00900 - Decrementer exception (for instance, SIGALRM)
+ 00A00 - I/O controller interface exception
+ 00C00 - System call exception (for instance, kill(3)).
+ 00E00 - FP assist exception (optional FP instructions, etc.)
+
+ 'address of fault' is the memory location that wasn't mapped
+ (from the DAR). 'dsisr' has the following bits under trap 00300:
+ 0 - direct-store error exception
+ 1 - no page table entry for page
+ 4 - memory access not permitted
+ 5 - trying to access I/O controller space or using lwarx/stwcx on
+ non-write-cached memory
+ 6 - access was store
+ 9 - data access breakpoint hit
+ 10 - segment table search failed to find translation (64-bit ppcs only)
+ 11 - I/O controller instruction not permitted
+ For trap 00400, the same bits are set in SRR1 instead.
+ For trap 00600, bits 12-31 of the DSISR set to allow emulation of
+ the instruction without actually having to read it from memory.
+*/
static void
register_dump (int fd, void **ctx)
{
- char buffer[(sizeof (regnames) / sizeof (regnames[0])) * 8];
- char *bufferpos = buffer + sizeof (buffer);
- struct iovec iov[(sizeof (regnames) / sizeof (regnames[0])) * 2 + 1];
- int nr = 0;
-
-#define ADD_STRING(str) \
- iov[nr].iov_base = (char *) str; \
- iov[nr].iov_len = strlen (str); \
- ++nr
-#define ADD_HEX(str, len) \
- do { \
- char *s = _itoa_word ((unsigned long int) x, bufferpos, 16, 0); \
- while (bufferpos - s < 8) \
- *--s = '0'; \
- iov[nr].iov_base = s; \
- iov[nr].iov_len = bufferpos - s; \
- bufferpos = s; \
- } while (0)
+ char buffer[sizeof(dumpform)];
+ char *bufferpos = buffer;
+ int i = 0;
+
+ memcpy(buffer, dumpform, sizeof(dumpform));
+
+ ctx += 8; /* FIXME!!!! Why is this necessary? Is it necessary? */
/* Generate the output. */
- ADD_STRING ("Register dump:\n\n");
- for (i = 0; i < sizeof (regnames) / sizeof (regnames[0]); i++)
+ while ((bufferpos = memchr (bufferpos, '%', sizeof(dumpform))))
{
- ADD_STRING (regnames[i]);
- ADD_HEX (ctx[i]);
+ *bufferpos++ = '0';
+ _itoa_word ((unsigned long int)(ctx[i]), bufferpos, 16, 0);
+ i++;
}
/* Write the output. */
- writev (fd, iov, nr);
+ write (fd, buffer, sizeof(buffer));
}
#define REGISTER_DUMP \
- ctx += 8; /* FIXME!!!! Why is this necessary? Is it necessary? */ \
register_dump (fd, ctx)
projects / platform / upstream / linaro-glibc.git / commitdiff