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50 lines
1.7 KiB
ArmAsm
50 lines
1.7 KiB
ArmAsm
/* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'. m68k version.
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Copyright (C) 1994, 1997 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 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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/* This just does a tail-call to `__sigsetjmp (ARG, 0)'.
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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, -(%sp)
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#define POP(reg) move.l (%sp)+, reg
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#define PUSH0 clr.l -(%sp)
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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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#define PUSH0 clrl sp@-
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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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PUSH0 /* Push second argument of zero. */
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PUSH (d1) /* Push back first argument. */
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PUSH (d0) /* Push back return PC. */
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#ifdef PIC
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bra.l C_SYMBOL_NAME (__sigsetjmp@PLTPC)
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#else
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jmp C_SYMBOL_NAME (__sigsetjmp)
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#endif
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END (_setjmp)
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