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This commit is contained in:
Nguyen Quy Anh
2026-04-24 16:31:42 +02:00
parent aa1daf9149
commit 3d217e7840
7 changed files with 113 additions and 55 deletions
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tsc_x86.h
+41 -52
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@@ -1,24 +1,24 @@
/* ==================== GNU C and possibly other UNIX compilers ===================== */
#ifndef _WIN32
#ifndef _WIN32
#if defined(__GNUC__) || defined(__linux__)
#define VOLATILE __volatile__
#define ASM __asm__
#else
/* if we're neither compiling with gcc or under linux, we can hope
* the following lines work, they probably won't */
#define ASM asm
#define VOLATILE
#endif
#if defined(__GNUC__) || defined(__linux__)
#define VOLATILE __volatile__
#define ASM __asm__
#else
/* if we're neither compiling with gcc or under linux, we can hope
* the following lines work, they probably won't */
#define ASM asm
#define VOLATILE
#endif
#define myInt64 unsigned long long
#define INT32 unsigned int
#define myInt64 unsigned long long
#define INT32 unsigned int
/* ======================== WIN32 ======================= */
#else
#define myInt64 signed __int64
#define INT32 unsigned __int32
#define myInt64 signed __int64
#define INT32 unsigned __int32
#endif
@@ -27,68 +27,57 @@
* Time Stamp Counter. The Intel manuals contain more information.
*/
#define COUNTER_LO(a) ((a).int32.lo)
#define COUNTER_HI(a) ((a).int32.hi)
#define COUNTER_VAL(a) ((a).int64)
#define COUNTER(a) \
((unsigned long long)COUNTER_VAL(a))
#define COUNTER(a) ((unsigned long long)COUNTER_VAL(a))
#define COUNTER_DIFF(a,b) \
(COUNTER(a)-COUNTER(b))
#define COUNTER_DIFF(a, b) (COUNTER(a) - COUNTER(b))
/* ==================== GNU C and possibly other UNIX compilers ===================== */
#ifndef _WIN32
typedef union
{ myInt64 int64;
struct {INT32 lo, hi;} int32;
} tsc_counter;
typedef union {
myInt64 int64;
struct {
INT32 lo, hi;
} int32;
} tsc_counter;
#define RDTSC(cpu_c) \
ASM VOLATILE ("rdtsc" : "=a" ((cpu_c).int32.lo), "=d"((cpu_c).int32.hi))
#define CPUID() \
ASM VOLATILE ("cpuid" : : "a" (0) : "bx", "cx", "dx" )
#define RDTSC(cpu_c) ASM VOLATILE("rdtsc" : "=a"((cpu_c).int32.lo), "=d"((cpu_c).int32.hi))
#define CPUID() ASM VOLATILE("cpuid" : : "a"(0) : "bx", "cx", "dx")
/* ======================== WIN32 ======================= */
#else
typedef union
{ myInt64 int64;
struct {INT32 lo, hi;} int32;
} tsc_counter;
typedef union {
myInt64 int64;
struct {
INT32 lo, hi;
} int32;
} tsc_counter;
#define RDTSC(cpu_c) \
{ __asm rdtsc \
__asm mov (cpu_c).int32.lo,eax \
__asm mov (cpu_c).int32.hi,edx \
}
#define RDTSC(cpu_c) {__asm rdtsc __asm mov(cpu_c).int32.lo, eax __asm mov(cpu_c).int32.hi, edx}
#define CPUID() \
{ \
__asm mov eax, 0 \
__asm cpuid \
}
#define CPUID() {__asm mov eax, 0 __asm cpuid}
#endif
static void init_tsc() {
; // no need to initialize anything for x86
; // no need to initialize anything for x86
}
static myInt64 start_tsc(void) {
tsc_counter start;
CPUID();
RDTSC(start);
return COUNTER_VAL(start);
tsc_counter start;
CPUID();
RDTSC(start);
return COUNTER_VAL(start);
}
static myInt64 stop_tsc(myInt64 start) {
tsc_counter end;
RDTSC(end);
CPUID();
return COUNTER_VAL(end) - start;
tsc_counter end;
RDTSC(end);
CPUID();
return COUNTER_VAL(end) - start;
}