diff options
Diffstat (limited to 'src/libthread/sun4u.c')
| -rw-r--r-- | src/libthread/sun4u.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/src/libthread/sun4u.c b/src/libthread/sun4u.c index 5eb2135e..0c298c62 100644 --- a/src/libthread/sun4u.c +++ b/src/libthread/sun4u.c @@ -1,9 +1,12 @@ #include "threadimpl.h" static void -launchersparc(int o0, int o1, int o2, int o3, int o4, +launchersparc(uint o0, uint o1, uint o2, uint o3, + uint o4, uint o5, uint o6, uint o7, void (*f)(void *arg), void *arg) { + if(0) print("ls %x %x %x %x %x %x %x %x %x %x at %x\n", + o0, o1, o2, o3, o4, o5, o6, o7, f, arg, &o0); (*f)(arg); threadexits(nil); } @@ -13,13 +16,26 @@ _threadinitstack(Thread *t, void (*f)(void*), void *arg) { ulong *tos, *stk; + /* + * This is a bit more complicated than it should be, + * because we need to set things up so that gotolabel + * (which executes a return) gets us into launchersparc. + * So all the registers are going to be renamed before + * we get there. The input registers here become the + * output registers there, which is useless. + * The input registers there are inaccessible, so we + * have to give launchersparc enough arguments that + * everything ends up in the stack. + */ tos = (ulong*)&t->stk[t->stksize&~7]; stk = tos; --stk; *--stk = (ulong)arg; *--stk = (ulong)f; + stk -= 25; /* would love to understand this */ t->sched.link = (ulong)launchersparc - 8; t->sched.input[6] = 0; - t->sched.sp = (ulong)stk - 0x5c; + t->sched.sp = (ulong)stk; + if(0) print("tis %x %x at %x\n", f, arg, t->sched.sp); } |