1 76193d7c 2003-09-30 devnull #include "threadimpl.h"
3 a3785ca2 2004-04-21 devnull * To use this you need some patches to Valgrind that
4 a3785ca2 2004-04-21 devnull * let it help out with detecting stack overflow.
6 a3785ca2 2004-04-21 devnull #define USEVALGRIND 0
7 a3785ca2 2004-04-21 devnull #ifdef USEVALGRIND
8 a3785ca2 2004-04-21 devnull #include <valgrind/memcheck.h>
11 76193d7c 2003-09-30 devnull static void
12 76193d7c 2003-09-30 devnull launcher386(void (*f)(void *arg), void *arg)
15 a3785ca2 2004-04-21 devnull Thread *t;
17 a3785ca2 2004-04-21 devnull p = _threadgetproc();
18 a3785ca2 2004-04-21 devnull t = p->thread;
19 a3785ca2 2004-04-21 devnull _threadstacklimit(t->stk);
21 76193d7c 2003-09-30 devnull (*f)(arg);
22 76193d7c 2003-09-30 devnull threadexits(nil);
26 76193d7c 2003-09-30 devnull _threadinitstack(Thread *t, void (*f)(void*), void *arg)
28 76193d7c 2003-09-30 devnull ulong *tos;
30 76193d7c 2003-09-30 devnull tos = (ulong*)&t->stk[t->stksize&~7];
31 76193d7c 2003-09-30 devnull *--tos = (ulong)arg;
32 76193d7c 2003-09-30 devnull *--tos = (ulong)f;
33 76193d7c 2003-09-30 devnull t->sched.pc = (ulong)launcher386;
34 76193d7c 2003-09-30 devnull t->sched.sp = (ulong)tos - 8; /* old PC and new PC */
38 a3785ca2 2004-04-21 devnull _threadinswitch(int enter)
40 a3785ca2 2004-04-21 devnull USED(enter);
41 a3785ca2 2004-04-21 devnull #ifdef USEVALGRIND
42 a3785ca2 2004-04-21 devnull if(enter)
43 a3785ca2 2004-04-21 devnull VALGRIND_SET_STACK_LIMIT(0, 0, 1);
45 a3785ca2 2004-04-21 devnull VALGRIND_SET_STACK_LIMIT(0, 0, 0);
50 a3785ca2 2004-04-21 devnull _threadstacklimit(void *addr)
52 a3785ca2 2004-04-21 devnull USED(addr);
54 a3785ca2 2004-04-21 devnull #ifdef USEVALGRIND
55 a3785ca2 2004-04-21 devnull VALGRIND_SET_STACK_LIMIT(1, addr, 0);