2 #include <machine/npx.h>
7 inline static void *ucontext_stack_pointer(void *uap)
9 ucontext_t *ucontext = (ucontext_t *)uap;
10 return (void *)ucontext->uc_mcontext.mc_esp;
13 inline static unsigned int uap_fpu_status(void *uap)
15 ucontext_t *ucontext = (ucontext_t *)uap;
16 if (ucontext->uc_mcontext.mc_fpformat == _MC_FPFMT_387)
18 struct save87 *x87 = (struct save87 *)(&ucontext->uc_mcontext.mc_fpstate);
19 return x87->sv_env.en_sw;
21 else if (ucontext->uc_mcontext.mc_fpformat == _MC_FPFMT_XMM)
23 struct savexmm *xmm = (struct savexmm *)(&ucontext->uc_mcontext.mc_fpstate);
24 return xmm->sv_env.en_sw | xmm->sv_env.en_mxcsr;
30 inline static void uap_clear_fpu_status(void *uap)
32 ucontext_t *ucontext = (ucontext_t *)uap;
33 if (ucontext->uc_mcontext.mc_fpformat == _MC_FPFMT_387)
35 struct save87 *x87 = (struct save87 *)(&ucontext->uc_mcontext.mc_fpstate);
36 x87->sv_env.en_sw = 0;
38 else if (ucontext->uc_mcontext.mc_fpformat == _MC_FPFMT_XMM)
40 struct savexmm *xmm = (struct savexmm *)(&ucontext->uc_mcontext.mc_fpstate);
41 xmm->sv_env.en_sw = 0;
42 xmm->sv_env.en_mxcsr &= 0xffffffc0;
46 #define UAP_PROGRAM_COUNTER(ucontext) (((ucontext_t *)(ucontext))->uc_mcontext.mc_eip)