diff options
Diffstat (limited to 'src/libthread/Darwin-power.c')
-rw-r--r-- | src/libthread/Darwin-power.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/libthread/Darwin-power.c b/src/libthread/Darwin-power.c new file mode 100644 index 00000000..373cc623 --- /dev/null +++ b/src/libthread/Darwin-power.c @@ -0,0 +1,37 @@ +#include "threadimpl.h" + +void +makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...) +{ + ulong *sp, *tos; + va_list arg; + + tos = (ulong*)ucp->uc_stack.ss_sp+ucp->uc_stack.ss_size/sizeof(ulong); + sp = tos - 16; + ucp->label.pc = (long)func; + ucp->label.sp = (long)sp; + va_start(arg, argc); + ucp->label.r3 = va_arg(arg, long); + va_end(arg); +} + +void +getcontext(ucontext_t *uc) +{ + return __setlabel(uc); +} + +int +setcontext(ucontext_t *uc) +{ + return __gotolabel(uc); +} + +int +swapcontext(ucontext_t *oucp, ucontext_t *ucp) +{ + if(getcontext(oucp) == 0) + setcontext(ucp); + return 0; +} + |