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rewrote switch-procedure in asm

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(solves problems with different gcc versions)
This commit is contained in:
fros4943 2006-10-04 15:05:37 +00:00
parent 50fda17c3e
commit eb0b2f137e
2 changed files with 33 additions and 32 deletions
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62
platform/cooja/sys/cooja_mtarch.c
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@ -46,37 +46,39 @@ cooja_mtarch_start(struct cooja_mtarch_thread *t,
f->ebp = (unsigned long)&f->eax;
}
/*--------------------------------------------------------------------------*/
static unsigned long cooja_spsave, cooja_sptmp;
__asm__ (
"cooja_sw:\n\t"
"pushl %ebp\n\t"
"movl %esp, %ebp\n\t"
"pushl %eax\n\t"
"pushl %ebx\n\t"
"pushl %ecx\n\t"
"pushl %edx\n\t"
"pushl %esi\n\t"
"pushl %edi\n\t"
"pushl %ebp\n\t"
"pushl %ebp\n\t"
"movl cooja_running_thread, %eax\n\t"
"movl 0(%eax), %ebx\n\t"
"movl %esp, 0(%eax)\n\t"
"movl %ebx, %esp\n\t"
"popl %ebp\n\t"
"popl %ebp\n\t"
"popl %edi\n\t"
"popl %esi\n\t"
"popl %edx\n\t"
"popl %ecx\n\t"
"popl %ebx\n\t"
"popl %eax\n\t"
"leave\n\t"
"ret\n\t"
);
/*--------------------------------------------------------------------------*/
static struct cooja_mtarch_thread *cooja_running_thread;
static void
cooja_sw(void)
{
asm("pushl %eax");
asm("pushl %ebx");
asm("pushl %ecx");
asm("pushl %edx");
asm("pushl %esi");
asm("pushl %edi");
asm("pushl %ebp");
// asm("pushl %ebp"); /* XXX: should push FPU flags here. */
asm("movl %esp, cooja_spsave");
cooja_sptmp = cooja_running_thread->sp;
cooja_running_thread->sp = cooja_spsave;
asm("movl cooja_sptmp, %esp");
// asm("popl %ebp"); /* XXX: should pop FPU flags here. */
asm("popl %ebp");
asm("popl %edi");
asm("popl %esi");
asm("popl %edx");
asm("popl %ecx");
asm("popl %ebx");
asm("popl %eax");
}
/*--------------------------------------------------------------------------*/
void
cooja_mtarch_exec(struct cooja_mtarch_thread *t)

3
platform/cooja/sys/cooja_mtarch.h
View file

@ -40,9 +40,8 @@
#endif /* COOJA_MTARCH_STACKSIZE */
struct cooja_mtarch_thread {
/* Note: stack must be aligned on 4-byte boundary. */
unsigned long sp; /* Note: stack pointer must be first var in struct! */
unsigned long stack[COOJA_MTARCH_STACKSIZE];
unsigned long sp;
};
struct cooja_mt_thread;