diff options
| -rwxr-xr-x | configure | 13 | ||||
| -rw-r--r-- | tcg/i386/tcg-target.c | 4 |
2 files changed, 15 insertions, 2 deletions
diff --git a/configure b/configure index 4648117957..79eb54c3ef 100755 --- a/configure +++ b/configure @@ -3564,7 +3564,18 @@ cpuid_h=no cat > $TMPC << EOF #include <cpuid.h> int main(void) { - return 0; + unsigned a, b, c, d; + int max = __get_cpuid_max(0, 0); + + if (max >= 1) { + __cpuid(1, a, b, c, d); + } + + if (max >= 7) { + __cpuid_count(7, 0, a, b, c, d); + } + + return 0; } EOF if compile_prog "" "" ; then diff --git a/tcg/i386/tcg-target.c b/tcg/i386/tcg-target.c index fef1717418..f832282d1a 100644 --- a/tcg/i386/tcg-target.c +++ b/tcg/i386/tcg-target.c @@ -115,7 +115,7 @@ static const int tcg_target_call_oarg_regs[] = { is available. */ #if TCG_TARGET_REG_BITS == 64 # define have_cmov 1 -#elif defined(CONFIG_CPUID_H) +#elif defined(CONFIG_CPUID_H) && defined(bit_CMOV) static bool have_cmov; #else # define have_cmov 0 @@ -2295,6 +2295,7 @@ static void tcg_target_qemu_prologue(TCGContext *s) static void tcg_target_init(TCGContext *s) { +#ifdef CONFIG_CPUID_H unsigned a, b, c, d; int max = __get_cpuid_max(0, 0); @@ -2323,6 +2324,7 @@ static void tcg_target_init(TCGContext *s) have_bmi2 = (b & bit_BMI2) != 0; #endif } +#endif if (TCG_TARGET_REG_BITS == 64) { tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0, 0xffff); |