diff options
Diffstat (limited to 'src/libthread/arm-ucontext.c')
-rw-r--r-- | src/libthread/arm-ucontext.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/libthread/arm-ucontext.c b/src/libthread/arm-ucontext.c new file mode 100644 index 00000000..512ca973 --- /dev/null +++ b/src/libthread/arm-ucontext.c @@ -0,0 +1,24 @@ +#include "threadimpl.h" + +void +makecontext(ucontext_t *uc, void (*fn)(void), int argc, ...) +{ + int i, *sp; + va_list arg; + + sp = USPALIGN(uc, 4); + va_start(arg, argc); + for(i=0; i<4 && i<argc; i++) + (&uc->uc_mcontext.arm_r0)[i] = va_arg(arg, uint); + va_end(arg); + uc->uc_mcontext.arm_sp = (uint)sp; + uc->uc_mcontext.arm_lr = (uint)fn; +} + +int +swapcontext(ucontext_t *oucp, const ucontext_t *ucp) +{ + if(getcontext(oucp) == 0) + setcontext(ucp); + return 0; +} |