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2003-05-05 Jakub Jelinek <jakub@redhat.com> * sysdeps/ia64/bits/atomic.h (__arch_compare_and_exchange_val_8_acq, __arch_compare_and_exchange_val_16_acq): Cast 0 to mem's type. * sysdeps/powerpc/powerpc32/bits/atomic.h (__arch_compare_and_exchange_val_64_acq): Likewise. * sysdeps/sparc/sparc32/sparcv9/bits/atomic.h (__arch_compare_and_exchange_val_8_acq, __arch_compare_and_exchange_val_16_acq, __arch_compare_and_exchange_val_64_acq): Likewise. * sysdeps/sparc/sparc64/bits/atomic.h (__arch_compare_and_exchange_val_8_acq, __arch_compare_and_exchange_val_16_acq): Likewise. * sysdeps/s390/bits/atomic.h (__arch_compare_and_exchange_val_8_acq, __arch_compare_and_exchange_val_16_acq, __arch_compare_and_exchange_val_64_acq): Likewise. * sysdeps/unix/sysv/linux/sh/bits/atomic.h (__arch_compare_and_exchange_val_64_acq): Likewise. * sysdeps/s390/s390-64/backtrace.c (__backtrace): Add cast to shut up warning. * sysdeps/s390/fpu/fegetenv.c (fegetenv): Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h (INLINE_SYSCALL, INTERNAL_SYSCALL_DIRECT, INTERNAL_SYSCALL_SVC0): Return long instead of int. (INTERNAL_SYSCALL_ERROR_P): Cast val to unsigned long, replace 0xfffff001u with -4095UL.
81 lines
2.5 KiB
C
81 lines
2.5 KiB
C
/* Return backtrace of current program state. 64 bit S/390 version.
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Copyright (C) 2001 Free Software Foundation, Inc.
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Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
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This file is part of the GNU C Library.
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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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <execinfo.h>
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#include <stddef.h>
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/* This is a global variable set at program start time. It marks the
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highest used stack address. */
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extern void *__libc_stack_end;
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/* This is the stack layout we see for every non-leaf function.
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size offset
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%r15 -> +------------------+
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8 | back chain | 0
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8 | end of stack | 8
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32 | scratch | 16
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80 | save area r6-r15 | 48
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16 | save area f4,f6 | 128
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16 | empty | 144
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+------------------+
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r14 in the save area holds the return address.
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*/
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struct layout
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{
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long back_chain;
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long end_of_stack;
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long scratch[4];
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long save_grps[10];
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long save_fp[2];
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long empty[2];
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};
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int
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__backtrace (array, size)
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void **array;
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int size;
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{
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/* We assume that all the code is generated with frame pointers set. */
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struct layout *stack;
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int cnt = 0;
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asm ("LGR %0,%%r15" : "=d" (stack) );
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/* We skip the call to this function, it makes no sense to record it. */
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stack = (struct layout *) stack->back_chain;
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while (cnt < size)
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{
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if (stack == NULL || (void *) stack > __libc_stack_end)
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/* This means the address is out of range. Note that for the
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toplevel we see a frame pointer with value NULL which clearly is
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out of range. */
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break;
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array[cnt++] = (void *) stack->save_grps[8];
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stack = (struct layout *) stack->back_chain;
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}
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return cnt;
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}
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weak_alias (__backtrace, backtrace)
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