Exemplos de lj_vm_cpuid em C++ (Cpp)

Exemplo n.º 1

Arquivo: lib_jit.c Projeto: wenhulove333/ScutServer

/* Arch-dependent CPU detection. */
static uint32_t jit_cpudetect(lua_State *L)
{
    uint32_t flags = 0;
#if LJ_TARGET_X86ORX64
    uint32_t vendor[4];
    uint32_t features[4];
    if (lj_vm_cpuid(0, vendor) && lj_vm_cpuid(1, features)) {
#if !LJ_HASJIT
#define JIT_F_CMOV	1
#define JIT_F_SSE2	2
#endif
        flags |= ((features[3] >> 15)&1) * JIT_F_CMOV;
        flags |= ((features[3] >> 26)&1) * JIT_F_SSE2;
#if LJ_HASJIT
        flags |= ((features[2] >> 0)&1) * JIT_F_SSE3;
        flags |= ((features[2] >> 19)&1) * JIT_F_SSE4_1;
        if (vendor[2] == 0x6c65746e) {  /* Intel. */
            if ((features[0] & 0x0ff00f00) == 0x00000f00)  /* P4. */
                flags |= JIT_F_P4;  /* Currently unused. */
            else if ((features[0] & 0x0fff0ff0) == 0x000106c0)  /* Atom. */
                flags |= JIT_F_LEA_AGU;
        } else if (vendor[2] == 0x444d4163) {  /* AMD. */
            uint32_t fam = (features[0] & 0x0ff00f00);
            if (fam == 0x00000f00)  /* K8. */
                flags |= JIT_F_SPLIT_XMM;
            if (fam >= 0x00000f00)  /* K8, K10. */
                flags |= JIT_F_PREFER_IMUL;
        }
#endif
    }

Exemplo n.º 2

Arquivo: lib_jit.c Projeto: SiavashGorji/LuaJIT-Luarocks-Torch7

/* Arch-dependent CPU detection. */
static uint32_t jit_cpudetect(lua_State *L)
{
  uint32_t flags = 0;
#if LJ_TARGET_X86ORX64
  uint32_t vendor[4];
  uint32_t features[4];
  if (lj_vm_cpuid(0, vendor) && lj_vm_cpuid(1, features)) {
#if !LJ_HASJIT
#define JIT_F_SSE2	2
#endif
    flags |= ((features[3] >> 26)&1) * JIT_F_SSE2;
#if LJ_HASJIT
    flags |= ((features[2] >> 0)&1) * JIT_F_SSE3;
    flags |= ((features[2] >> 19)&1) * JIT_F_SSE4_1;
    if (vendor[2] == 0x6c65746e) {  /* Intel. */
      if ((features[0] & 0x0fff0ff0) == 0x000106c0)  /* Atom. */
	flags |= JIT_F_LEA_AGU;
    } else if (vendor[2] == 0x444d4163) {  /* AMD. */
      uint32_t fam = (features[0] & 0x0ff00f00);
      if (fam >= 0x00000f00)  /* K8, K10. */
	flags |= JIT_F_PREFER_IMUL;
    }
    if (vendor[0] >= 7) {
      uint32_t xfeatures[4];
      lj_vm_cpuid(7, xfeatures);
      flags |= ((xfeatures[1] >> 8)&1) * JIT_F_BMI2;
    }