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Improve CPU detection. Enable VFPv4 for Blackberry devices which support it.

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This commit is contained in:
Sacha 2013-05-15 04:39:57 +10:00
parent d0197d072c
commit d97f2268ca
1 changed files with 44 additions and 24 deletions
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68
Common/ArmCPUDetect.cpp
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@ -79,6 +79,7 @@ bool CheckCPUFeature(const char *feature)
return false;
}
#endif
int GetCoreCount()
{
#ifdef __SYMBIAN32__
@ -126,7 +127,49 @@ void CPUInfo::Detect()
// Get the information about the CPU
num_cores = GetCoreCount();
#if !defined(BLACKBERRY) && !defined(IOS) && !defined(__SYMBIAN32__)
#if defined(__SYMBIAN32__) || defined(BLACKBERRY) || defined(IOS)
bool isVFP3 = false;
bool isVFP4 = false;
#ifdef IOS
isVFP3 = true;
// TODO: Check for swift arch (VFP4)
#elif defined(BLACKBERRY)
isVFP3 = true;
const char cpuInfoPath[] = "/pps/services/hw_info/inventory";
const char marker[] = "Processor_Name::";
const char qcCPU[] = "MSM";
char buf[1024];
FILE* fp;
if (fp = fopen(cpuInfoPath, "r"))
{
while (fgets(buf, sizeof(buf), fp))
{
if (strncmp(buf, marker, sizeof(marker) - 1))
continue;
if (strncmp(buf + sizeof(marker) - 1, qcCPU, sizeof(qcCPU) - 1) == 0)
isVFP4 = true;
break;
}
fclose(fp);
}
#endif
// Hardcode this for now
bSwp = true;
bHalf = true;
bThumb = false;
bFastMult = true;
bVFP = true;
bEDSP = true;
bThumbEE = isVFP3;
bNEON = isVFP3;
bVFPv3 = isVFP3;
bTLS = true;
bVFPv4 = isVFP4;
bIDIVa = isVFP4;
bIDIVt = isVFP4;
bFP = false;
bASIMD = false;
#else
strncpy(cpu_string, GetCPUString(), sizeof(cpu_string));
bSwp = CheckCPUFeature("swp");
bHalf = CheckCPUFeature("half");
@ -146,29 +189,6 @@ void CPUInfo::Detect()
// These two require ARMv8 or higher
bFP = CheckCPUFeature("fp");
bASIMD = CheckCPUFeature("asimd");
#else
// Hardcode this for now
bSwp = true;
bHalf = true;
bThumb = false;
bFastMult = true;
bVFP = true;
bEDSP = true;
#ifdef __SYMBIAN32__
bThumbEE = false;
bNEON = false;
bVFPv3 = false;
#else
bThumbEE = true;
bNEON = true;
bVFPv3 = true;
#endif
bTLS = true;
bVFPv4 = false;
bIDIVa = false;
bIDIVt = false;
bFP = false;
bASIMD = false;
#endif
// On android, we build a separate library for ARMv7 so this is fine.
// TODO: Check for ARMv7 on other platforms.