102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include "sys/mt.h"
|
||
|
|
|
||
|
|
struct frame {
|
||
|
|
unsigned long flags;
|
||
|
|
unsigned long ebp;
|
||
|
|
unsigned long edi;
|
||
|
|
unsigned long esi;
|
||
|
|
unsigned long edx;
|
||
|
|
unsigned long ecx;
|
||
|
|
unsigned long ebx;
|
||
|
|
unsigned long eax;
|
||
|
|
unsigned long retaddr;
|
||
|
|
unsigned long retaddr2;
|
||
|
|
unsigned long data;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*--------------------------------------------------------------------------*/
|
||
|
|
void
|
||
|
|
mtarch_init(void)
|
||
|
|
{
|
||
|
|
|
||
|
|
}
|
||
|
|
/*--------------------------------------------------------------------------*/
|
||
|
|
void
|
||
|
|
mtarch_start(struct mtarch_thread *t,
|
||
|
|
void (*function)(void *), void *data)
|
||
|
|
{
|
||
|
|
struct frame *f = (struct frame *)&t->stack[MTARCH_STACKSIZE - sizeof(struct frame)/4];
|
||
|
|
memset(f, 0, sizeof(struct frame));
|
||
|
|
f->retaddr = (unsigned long)function;
|
||
|
|
f->data = (unsigned long)data;
|
||
|
|
t->sp = (unsigned long)&f->flags;
|
||
|
|
f->ebp = (unsigned long)&f->eax;
|
||
|
|
}
|
||
|
|
/*--------------------------------------------------------------------------*/
|
||
|
|
static unsigned long spsave, sptmp;
|
||
|
|
static struct mtarch_thread *running_thread;
|
||
|
|
|
||
|
|
static void
|
||
|
|
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, spsave");
|
||
|
|
|
||
|
|
sptmp = running_thread->sp;
|
||
|
|
running_thread->sp = spsave;
|
||
|
|
|
||
|
|
asm("movl 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
|
||
|
|
mtarch_exec(struct mtarch_thread *t)
|
||
|
|
{
|
||
|
|
running_thread = t;
|
||
|
|
sw();
|
||
|
|
running_thread = NULL;
|
||
|
|
}
|
||
|
|
/*--------------------------------------------------------------------------*/
|
||
|
|
void
|
||
|
|
mtarch_remove(void)
|
||
|
|
{
|
||
|
|
|
||
|
|
}
|
||
|
|
/*--------------------------------------------------------------------------*/
|
||
|
|
void
|
||
|
|
mtarch_yield(void)
|
||
|
|
{
|
||
|
|
sw();
|
||
|
|
}
|
||
|
|
/*--------------------------------------------------------------------------*/
|
||
|
|
void
|
||
|
|
mtarch_pstop(void)
|
||
|
|
{
|
||
|
|
|
||
|
|
}
|
||
|
|
/*--------------------------------------------------------------------------*/
|
||
|
|
void
|
||
|
|
mtarch_pstart(void)
|
||
|
|
{
|
||
|
|
|
||
|
|
}
|
||
|
|
/*--------------------------------------------------------------------------*/
|