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{
This file is part of the Free Pascal run time library.
Copyright (c) 1999-2000 by the Free Pascal development team
SetJmp and LongJmp implementation for exception handling
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
**********************************************************************}
Function fpc_SetJmp (Var S : Jmp_buf) : longint;assembler;nostackframe;[Public, alias : 'FPC_SETJMP']; compilerproc;
asm
movl %ebx,Jmp_buf.ebx(%eax)
movl %esi,Jmp_buf.esi(%eax)
movl %edi,Jmp_buf.edi(%eax)
movl %ebp,Jmp_buf.bp(%eax)
leal 4(%esp),%edi
movl %edi,Jmp_buf.sp(%eax)
movl (%esp),%edi
movl %edi,Jmp_buf.pc(%eax)
movl Jmp_buf.edi(%eax),%edi
xorl %eax,%eax
end;
Procedure fpc_longJmp (Var S : Jmp_buf; value : longint); assembler;nostackframe;[Public, alias : 'FPC_LONGJMP']; compilerproc;
asm
xchgl %edx,%eax
movl Jmp_buf.ebx(%edx),%ebx
movl Jmp_buf.esi(%edx),%esi
movl Jmp_buf.edi(%edx),%edi
movl Jmp_buf.bp(%edx),%ebp
movl Jmp_buf.sp(%edx),%esp
// we should also clear the fpu
// fninit no must be done elsewhere PM
// or we should reset the control word also
jmp Jmp_buf.pc(%edx)
end;
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