1234567891011121314151617181920212223242526272829303132 |
- #include <u.h>
- #include <libc.h>
- #include <thread.h>
- #include "threadimpl.h"
- /* first argument goes in a register and on the stack; avoid it */
- static void
- launcheralpha(int, void (*f)(void *arg), void *arg)
- {
- (*f)(arg);
- threadexits(nil);
- }
- void
- _threadinitstack(Thread *t, void (*f)(void*), void *arg)
- {
- ulong *tos;
- tos = (ulong*)&t->stk[t->stksize&~7];
- *--tos = 0; /* pad arguments to 8 bytes */
- *--tos = (ulong)arg;
- *--tos = (ulong)f;
- *--tos = 0; /* first arg */
- *--tos = 0; /* for alignment with... */
- *--tos = 0; /* ... place to store return PC */
- t->sched[JMPBUFPC] = (ulong)launcheralpha+JMPBUFDPC;
- t->sched[JMPBUFSP] = (ulong)tos;
- }
|