diff options
Diffstat (limited to 'src/pkg/runtime/cgo/gcc_freebsd_386.c')
| -rw-r--r-- | src/pkg/runtime/cgo/gcc_freebsd_386.c | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/src/pkg/runtime/cgo/gcc_freebsd_386.c b/src/pkg/runtime/cgo/gcc_freebsd_386.c index 7c62a1bc4..6797824c6 100644 --- a/src/pkg/runtime/cgo/gcc_freebsd_386.c +++ b/src/pkg/runtime/cgo/gcc_freebsd_386.c @@ -10,13 +10,15 @@ #include "libcgo.h" static void* threadentry(void*); +static void (*setmg_gcc)(void*, void*); void -x_cgo_init(G *g) +x_cgo_init(G *g, void (*setmg)(void*, void*)) { pthread_attr_t attr; size_t size; + setmg_gcc = setmg; pthread_attr_init(&attr); pthread_attr_getstacksize(&attr, &size); g->stackguard = (uintptr)&attr - size + 4096; @@ -66,15 +68,9 @@ threadentry(void *v) ts.g->stackguard = (uintptr)&ts - ts.g->stackguard + 4096; /* - * Set specific keys. On FreeBSD/ELF, the thread local storage - * is just before %gs:0. Our dynamic 8.out's reserve 8 bytes - * for the two words g and m at %gs:-8 and %gs:-4. + * Set specific keys. */ - asm volatile ( - "movl %0, %%gs:-8\n" // MOVL g, -8(GS) - "movl %1, %%gs:-4\n" // MOVL m, -4(GS) - :: "r"(ts.g), "r"(ts.m) - ); + setmg_gcc((void*)ts.m, (void*)ts.g); crosscall_386(ts.fn); return nil; |