#include <ucontext.h>
+#include <machine/npx.h>
namespace factor
{
-inline static void *ucontext_stack_pointer(void *uap)
+inline static unsigned int uap_fpu_status(void *uap)
{
- ucontext_t *ucontext = (ucontext_t *)uap;
- return (void *)ucontext->uc_mcontext.mc_esp;
+ ucontext_t *ucontext = (ucontext_t *)uap;
+ if (ucontext->uc_mcontext.mc_fpformat == _MC_FPFMT_387)
+ {
+ struct save87 *x87 = (struct save87 *)(&ucontext->uc_mcontext.mc_fpstate);
+ return x87->sv_env.en_sw;
+ }
+ else if (ucontext->uc_mcontext.mc_fpformat == _MC_FPFMT_XMM)
+ {
+ struct savexmm *xmm = (struct savexmm *)(&ucontext->uc_mcontext.mc_fpstate);
+ return xmm->sv_env.en_sw | xmm->sv_env.en_mxcsr;
+ }
+ else
+ return 0;
}
-#define UAP_PROGRAM_COUNTER(ucontext) (((ucontext_t *)(ucontext))->uc_mcontext.mc_eip)
+inline static void uap_clear_fpu_status(void *uap)
+{
+ ucontext_t *ucontext = (ucontext_t *)uap;
+ if (ucontext->uc_mcontext.mc_fpformat == _MC_FPFMT_387)
+ {
+ struct save87 *x87 = (struct save87 *)(&ucontext->uc_mcontext.mc_fpstate);
+ x87->sv_env.en_sw = 0;
+ }
+ else if (ucontext->uc_mcontext.mc_fpformat == _MC_FPFMT_XMM)
+ {
+ struct savexmm *xmm = (struct savexmm *)(&ucontext->uc_mcontext.mc_fpstate);
+ xmm->sv_env.en_sw = 0;
+ xmm->sv_env.en_mxcsr &= 0xffffffc0;
+ }
+}
+
+
+#define UAP_STACK_POINTER(ucontext) (((ucontext_t *)ucontext)->uc_mcontext.mc_esp)
+#define UAP_PROGRAM_COUNTER(ucontext) (((ucontext_t *)ucontext)->uc_mcontext.mc_eip)
}