diff options
Diffstat (limited to 'volk/gen/make_cpuid_c.py')
| -rw-r--r-- | volk/gen/make_cpuid_c.py | 45 |
1 files changed, 34 insertions, 11 deletions
diff --git a/volk/gen/make_cpuid_c.py b/volk/gen/make_cpuid_c.py index e30d643cb..a8939fb90 100644 --- a/volk/gen/make_cpuid_c.py +++ b/volk/gen/make_cpuid_c.py @@ -73,6 +73,13 @@ static inline unsigned int cpuid_edx(unsigned int op) { cpuid_x86 (op, regs); return regs[3]; } + +static inline unsigned int xgetbv(void) { + //check to make sure that xgetbv is enabled in OS + int xgetbv_enabled = cpuid_ecx(1) >> 27 & 0x01; + if(xgetbv_enabled == 0) return 0; + return __xgetbv(); +} #endif """ @@ -90,19 +97,25 @@ def make_cpuid_c(dom) : no_test = False; else: no_test = False; - arch = str(domarch.attributes["name"].value); - op = domarch.getElementsByTagName("op"); + arch = str(domarch.attributes["name"].value) + op = domarch.getElementsByTagName("op") if op: - op = str(op[0].firstChild.data); - reg = domarch.getElementsByTagName("reg"); + op = str(op[0].firstChild.data) + reg = domarch.getElementsByTagName("reg") if reg: - reg = str(reg[0].firstChild.data); - shift = domarch.getElementsByTagName("shift"); + reg = str(reg[0].firstChild.data) + shift = domarch.getElementsByTagName("shift") if shift: - shift = str(shift[0].firstChild.data); - val = domarch.getElementsByTagName("val"); + shift = str(shift[0].firstChild.data) + val = domarch.getElementsByTagName("val") if val: - val = str(val[0].firstChild.data); + val = str(val[0].firstChild.data) + check = domarch.getElementsByTagName("check") + if check: + check = str(check[0].firstChild.data) + checkval = domarch.getElementsByTagName("checkval") + if checkval: + checkval = str(checkval[0].firstChild.data) if no_test: tempstring = tempstring + """\ @@ -121,13 +134,23 @@ int i_can_has_%s () { int i_can_has_%s () { #if defined(VOLK_CPU_x86) unsigned int e%sx = cpuid_e%sx (%s); - return ((e%sx >> %s) & 1) == %s; + int hwcap = (((e%sx >> %s) & 1) == %s); +""" % (arch, reg, reg, op, reg, shift, val) + + if check and checkval: + tempstring += """\ + if (hwcap == 0) return 0; + hwcap &= (%s() == %s); +""" % (check, checkval) + + tempstring += """\ + return hwcap; #else return 0; #endif } -""" % (arch, reg, reg, op, reg, shift, val) +""" elif op == "0x80000001": tempstring = tempstring + """\ |