diff options
Diffstat (limited to 'src/libthread/Linux-arm-swapcontext.c')
-rw-r--r-- | src/libthread/Linux-arm-swapcontext.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/libthread/Linux-arm-swapcontext.c b/src/libthread/Linux-arm-swapcontext.c new file mode 100644 index 00000000..43358800 --- /dev/null +++ b/src/libthread/Linux-arm-swapcontext.c @@ -0,0 +1,26 @@ +#include "threadimpl.h" + +void +makecontext(ucontext_t *uc, void (*fn)(void), int argc, ...) +{ + int i, *sp; + va_list arg; + + sp = (int*)uc->uc_stack.ss_sp+uc->uc_stack.ss_size/4; + va_start(arg, argc); + for(i=0; i<4 && i<argc; i++) + uc->uc_mcontext.gregs[i] = va_arg(arg, uint); + va_end(arg); + uc->uc_mcontext.gregs[13] = (uint)sp; + uc->uc_mcontext.gregs[14] = (uint)fn; +} + +int +swapcontext(ucontext_t *oucp, const ucontext_t *ucp) +{ + if(getcontext(oucp) == 0) + setcontext(ucp); + return 0; +} + + |