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ipxe/src/arch/e1/core/longjmp.c

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C

/*
* Copyright 2003 Yannis Mitsos and George Thanos
* {gmitsos@gthanos}@telecom.ntua.gr
* Released under GPL2, see the file COPYING in the top directory
*
*/
#include "setjmp.h"
unsigned long jmpbuf_ptr;
void longjmp(jmp_buf state, int value )
{
if(!value)
state->__jmpbuf->ReturnValue = 1;
else
state->__jmpbuf->ReturnValue = value;
jmpbuf_ptr = (unsigned long)state;
#define _state_ ((struct __jmp_buf_tag*)jmpbuf_ptr)
asm volatile("mov L0, %0\n\t"
"mov L1, %1\n\t"
"mov L2, %2\n\t"
"mov G3, %3\n\t"
"mov G4, %4\n\t"
"ret PC, L1\n\t"
:/*no output*/
:"l"(_state_->__jmpbuf->ReturnValue),
"l"(_state_->__jmpbuf->SavedPC),
"l"(_state_->__jmpbuf->SavedSR),
"l"(_state_->__jmpbuf->G3),
"l"(_state_->__jmpbuf->G4)
:"%G3", "%G4", "%L0", "%L1" );
#undef _state_
}