29 lines
615 B
C
29 lines
615 B
C
/*
|
|
* This is the co-expression context switch for the Intel 80386
|
|
* under Microport Unix System V/386
|
|
*/
|
|
|
|
/*
|
|
* coswitch
|
|
*/
|
|
|
|
coswitch(old_cs, new_cs, first)
|
|
int *old_cs, *new_cs;
|
|
int first;
|
|
{
|
|
asm(" movl 8(%ebp),%eax");
|
|
asm(" movl %esp,0(%eax)");
|
|
asm(" movl %ebp,4(%eax)");
|
|
asm(" movl 12(%ebp),%eax");
|
|
if (first == 0) { /* this is the first activation */
|
|
asm(" movl 0(%eax),%esp");
|
|
asm(" movl $0,%ebp");
|
|
new_context(0, 0);
|
|
syserr("interp() returned in coswitch");
|
|
}
|
|
else {
|
|
asm(" movl 0(%eax),%esp");
|
|
asm(" movl 4(%eax),%ebp");
|
|
}
|
|
}
|