#include #include namespace factor { inline static void *ucontext_stack_pointer(void *uap) { ucontext_t *ucontext = (ucontext_t *)uap; return (void *)ucontext->uc_mcontext.mc_esp; } inline static unsigned int uap_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); 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; } 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_PROGRAM_COUNTER(ucontext) (((ucontext_t *)(ucontext))->uc_mcontext.mc_eip) }