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Uses intrinsics for cpuid and cpuclock tick methods. Intrincs are only enabled if WIN64 is defined.

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This commit is contained in:
Bei Yang 2009-04-25 07:20:24 +00:00
parent 3c7320c7ac
commit 5f0894fe80
1 changed files with 20 additions and 0 deletions
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20
panda/src/windisplay/winGraphicsPipe.cxx
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@ -21,6 +21,11 @@
#include "psapi.h"
#include "powrprof.h"
#ifdef _WIN64
#include <intrin.h>
#endif
TypeHandle WinGraphicsPipe::_type_handle;
#define MAXIMUM_PROCESSORS 32
@ -121,6 +126,9 @@ typedef union
LONG_INTEGER;
PN_uint64 cpu_time_function (void) {
#ifdef _WIN64
return __rdtsc();
#else
LONG_INTEGER long_integer;
LONG_INTEGER *long_integer_pointer;
@ -135,6 +143,7 @@ PN_uint64 cpu_time_function (void) {
}
return long_integer.long_integer;
#endif
}
typedef union
@ -486,6 +495,12 @@ int cpuid (int input_eax, CPU_ID_REGISTERS *cpu_id_registers) {
{
if (input_eax == 0) {
// the order of ecx and edx is swapped when saved to make a proper vendor string
#ifdef _WIN64
__cpuid((int*)cpu_id_registers, input_eax);
unsigned int tmp = cpu_id_registers->edx;
cpu_id_registers->edx = cpu_id_registers->ecx;
cpu_id_registers->ecx = tmp;
#else
__asm
{
mov eax, [input_eax]
@ -498,8 +513,12 @@ int cpuid (int input_eax, CPU_ID_REGISTERS *cpu_id_registers) {
mov [edi + 8], edx
mov [edi + 12], ecx
}
#endif
}
else {
#ifdef _WIN64
__cpuid((int*)cpu_id_registers, input_eax);
#else
__asm
{
mov eax, [input_eax]
@ -512,6 +531,7 @@ int cpuid (int input_eax, CPU_ID_REGISTERS *cpu_id_registers) {
mov [edi + 8], ecx
mov [edi + 12], edx
}
#endif
}
state = true;