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Update.
* setjmp/setjmp.h: Cleanup definition of setjmp macro.
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@ -1,5 +1,7 @@
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2001-01-16 Ulrich Drepper <drepper@redhat.com>
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* setjmp/setjmp.h: Cleanup definition of setjmp macro.
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* sysdeps/i386/elf/bsd-setjmp.S: Real implementation.
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* sysdeps/i386/elf/bsd-_setjmp.S: Removed.
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* sysdeps/i386/elf/setjmp.S (setjmp): Removed here.
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@ -1,4 +1,4 @@
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/* Copyright (C) 1991,92,93,94,95,96,97,98,99 Free Software Foundation, Inc.
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/* Copyright (C) 1991-1999, 2001 Free Software Foundation, Inc.
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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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@ -34,36 +34,39 @@ __BEGIN_DECLS
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typedef struct __jmp_buf_tag /* C++ doesn't like tagless structs. */
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{
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/* NOTE: The machine-dependent definitions of `__sigsetjmp'
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assume that a `jmp_buf' begins with a `__jmp_buf'.
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Do not move this member or add others before it. */
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assume that a `jmp_buf' begins with a `__jmp_buf' and that
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`__mask_was_saved' follows it. Do not move these members
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or add others before it. */
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__jmp_buf __jmpbuf; /* Calling environment. */
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int __mask_was_saved; /* Saved the signal mask? */
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__sigset_t __saved_mask; /* Saved signal mask. */
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} jmp_buf[1];
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/* Store the calling environment in ENV, also saving the signal mask.
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Return 0. */
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extern int setjmp (jmp_buf __env) __THROW;
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/* Store the calling environment in ENV, not saving the signal mask.
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Return 0. */
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extern int _setjmp (jmp_buf __env) __THROW;
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/* Store the calling environment in ENV, also saving the
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signal mask if SAVEMASK is nonzero. Return 0.
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This is the internal name for `sigsetjmp'. */
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extern int __sigsetjmp (jmp_buf __env, int __savemask) __THROW;
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#ifndef __FAVOR_BSD
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/* Set ENV to the current position and return 0, not saving the signal mask.
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This is just like `sigsetjmp (ENV, 0)'.
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The ISO C standard says `setjmp' is a macro. */
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# define setjmp(env) __sigsetjmp ((env), 0)
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/* Do not save the signal mask. This is equivalent to the `_setjmp'
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BSD function. */
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# define setjmp(env) _setjmp (env)
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#else
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/* We are in 4.3 BSD-compatibility mode in which `setjmp'
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saves the signal mask like `sigsetjmp (ENV, 1)'. */
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# define setjmp(env) __sigsetjmp ((env), 1)
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saves the signal mask like `sigsetjmp (ENV, 1)'. We have to
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define a macro since ISO C says `setjmp' is one. */
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# define setjmp(env) setjmp (env)
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#endif /* Favor BSD. */
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#if defined __USE_BSD || defined __USE_XOPEN
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/* Set ENV to the current position and return 0, not saving the signal mask.
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This is the 4.3 BSD name for ISO `setjmp'. */
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# define _setjmp(env) __sigsetjmp ((env), 0)
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#endif
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/* Jump to the environment saved in ENV, making the
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`setjmp' call there return VAL, or 1 if VAL is 0. */
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@ -86,7 +89,7 @@ typedef jmp_buf sigjmp_buf;
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/* Store the calling environment in ENV, also saving the
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signal mask if SAVEMASK is nonzero. Return 0. */
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# define sigsetjmp(env, savemask) __sigsetjmp ((env), (savemask))
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# define sigsetjmp(env, savemask) __sigsetjmp (env, savemask)
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/* Jump to the environment saved in ENV, making the
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sigsetjmp call there return VAL, or 1 if VAL is 0.
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@ -35,18 +35,21 @@
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ENTRY (BP_SYM (_setjmp))
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ENTER
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movl JMPBUF(%esp), %eax
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CHECK_BOUNDS_BOTH_WIDE (%eax, JMPBUF(%esp), $JB_SIZE)
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xorl %eax, %eax
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movl JMPBUF(%esp), %edx
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CHECK_BOUNDS_BOTH_WIDE (%edx, JMPBUF(%esp), $(JB_SIZE+4))
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/* Save registers. */
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movl %ebx, (JB_BX*4)(%eax)
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movl %esi, (JB_SI*4)(%eax)
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movl %edi, (JB_DI*4)(%eax)
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movl %ebx, (JB_BX*4)(%edx)
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movl %esi, (JB_SI*4)(%edx)
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movl %edi, (JB_DI*4)(%edx)
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leal JMPBUF(%esp), %ecx /* Save SP as it will be after we return. */
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movl %ecx, (JB_SP*4)(%eax)
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movl %ecx, (JB_SP*4)(%edx)
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movl PCOFF(%esp), %ecx /* Save PC we are returning to now. */
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movl %ecx, (JB_PC*4)(%eax)
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movl %ecx, (JB_PC*4)(%edx)
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LEAVE
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movl %ebp, (JB_BP*4)(%eax) /* Save caller's frame pointer. */
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movl %ebp, (JB_BP*4)(%edx) /* Save caller's frame pointer. */
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movl %eax, JB_SIZE(%edx) /* No signal mask set. */
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ret
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END (BP_SYM (_setjmp))
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