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43 lines
1.5 KiB
ArmAsm
43 lines
1.5 KiB
ArmAsm
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/* BSD `setjmp' entry point to `sigsetjmp (..., 1)'. m68k version.
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Copyright (C) 1994 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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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
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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/* This just does a tail-call to `__sigsetjmp (ARG, 1)'.
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We cannot do it in C because it must be a tail-call, so frame-unwinding
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in setjmp doesn't clobber the state restored by longjmp. */
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#include <sysdep.h>
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#ifdef MOTOROLA_SYNTAX
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#define d0 %d0
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#define d1 %d1
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#define PUSH(reg) move.l reg, -(%esp)
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#define POP(reg) move.l (%esp)+, reg
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#else
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#define PUSH(reg) movel reg, sp@-
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#define POP(reg) movel sp@+, reg
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#endif
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ENTRY (setjmp)
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POP (d0) /* Pop return PC. */
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POP (d1) /* Pop jmp_buf argument. */
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PUSH (#1) /* Push second argument of one. */
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PUSH (d1) /* Push back first argument. */
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PUSH (d0) /* Push back return PC. */
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jmp C_SYMBOL_NAME (__sigsetjmp)
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