cc8d186dc3
- Deprecate os_compare_and_swap and replace with more portable compare_and_swap - Fixed a bug where the wrong image would be drawn
235 lines
6.1 KiB
C
235 lines
6.1 KiB
C
// #Portability rip ARM
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typedef struct Cpu_Info_X86 {
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u32 eax;
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u32 ebx;
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u32 ecx;
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u32 edx;
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} Cpu_Info_X86;
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typedef struct Cpu_Capabilities {
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bool sse1;
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bool sse2;
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bool sse3;
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bool ssse3;
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bool sse41;
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bool sse42;
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bool any_sse;
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bool avx;
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bool avx2;
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bool avx512;
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} Cpu_Capabilities;
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// I think this is the standard? (sse1)
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#define COMPILER_CAN_DO_SSE 1
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///
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// Compiler specific stuff
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#if COMPILER_MVSC
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#define inline __forceinline
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#define alignat(x) __declspec(align(x))
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#define COMPILER_HAS_MEMCPY_INTRINSICS 1
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inline void crash() {
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__debugbreak();
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volatile int *a = 0;
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*a = 5;
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}
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#include <intrin.h>
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#pragma intrinsic(__rdtsc)
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inline u64 rdtsc() {
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return __rdtsc();
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}
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inline Cpu_Info_X86 cpuid(u32 function_id) {
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Cpu_Info_X86 i;
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__cpuid((int*)&i, function_id);
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return i;
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}
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#if _M_IX86_FP >= 2
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#define COMPILER_CAN_DO_SSE2 1
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#define COMPILER_CAN_DO_SSE41 1
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#else
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#define COMPILER_CAN_DO_SSE2 0
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#define COMPILER_CAN_DO_SSE41 0
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#endif
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#ifdef __AVX__
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#define COMPILER_CAN_DO_AVX 1
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#else
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#define COMPILER_CAN_DO_AVX 0
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#endif
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#ifdef __AVX2__
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#define COMPILER_CAN_DO_AVX2 1
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#else
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#define COMPILER_CAN_DO_AVX2 0
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#endif
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#ifdef __AVX512F__
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#define COMPILER_CAN_DO_AVX512 1
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#else
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#define COMPILER_CAN_DO_AVX512 0
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#endif
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#define DEPRECATED(proc, msg) __declspec(deprecated(msg)) func
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#pragma intrinsic(_InterlockedCompareExchange8)
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#pragma intrinsic(_InterlockedCompareExchange16)
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#pragma intrinsic(_InterlockedCompareExchange)
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#pragma intrinsic(_InterlockedCompareExchange64)
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inline bool compare_and_swap_8(uint8_t *a, uint8_t b, uint8_t old) {
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return _InterlockedCompareExchange8((volatile char*)a, (char)b, (char)old) == old;
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}
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inline bool compare_and_swap_16(uint16_t *a, uint16_t b, uint16_t old) {
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return _InterlockedCompareExchange16((volatile short*)a, (short)b, (short)old) == old;
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}
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inline bool compare_and_swap_32(uint32_t *a, uint32_t b, uint32_t old) {
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return _InterlockedCompareExchange((volatile long*)a, (long)b, (long)old) == old;
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}
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inline bool compare_and_swap_64(uint64_t *a, uint64_t b, uint64_t old) {
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return _InterlockedCompareExchange64((volatile long long*)a, (long long)b, (long long)old) == old;
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}
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inline bool compare_and_swap_bool(bool *a, bool b, bool old) {
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return compare_and_swap_8((uint8_t*)a, (uint8_t)b, (uint8_t)old);
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}
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#elif COMPILER_GCC || COMPILER_CLANG
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#define inline __attribute__((always_inline)) inline
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#define alignat(x) __attribute__((aligned(x)))
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#define COMPILER_HAS_MEMCPY_INTRINSICS 1
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inline void crash() {
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__builtin_trap();
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volatile int *a = 0;
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*a = 5;
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}
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inline u64 rdtsc() {
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unsigned int lo, hi;
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__asm__ __volatile__("rdtsc" : "=a"(lo), "=d"(hi));
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return ((u64)hi << 32) | lo;
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}
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inline Cpu_Info_X86 cpuid(u32 function_id) {
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Cpu_Info_X86 info;
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__asm__ __volatile__(
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"cpuid"
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: "=a"(info.eax), "=b"(info.ebx), "=c"(info.ecx), "=d"(info.edx)
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: "a"(function_id), "c"(0));
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return info;
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}
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#ifdef __SSE2__
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#define COMPILER_CAN_DO_SSE2 1
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#else
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#define COMPILER_CAN_DO_SSE2 0
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#endif
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#ifdef __SSE4_1__
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#define COMPILER_CAN_DO_SSE41 1
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#else
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#define COMPILER_CAN_DO_SSE41 0
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#endif
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#ifdef __AVX__
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#define COMPILER_CAN_DO_AVX 1
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#else
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#define COMPILER_CAN_DO_AVX 0
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#endif
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#ifdef __AVX2__
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#define COMPILER_CAN_DO_AVX2 1
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#else
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#define COMPILER_CAN_DO_AVX2 0
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#endif
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#ifdef __AVX512F__
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#define COMPILER_CAN_DO_AVX512 1
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#else
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#define COMPILER_CAN_DO_AVX512 0
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#endif
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#define DEPRECATED(proc, msg) proc __attribute__((deprecated(msg)))
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inline bool compare_and_swap_8(uint8_t *a, uint8_t b, uint8_t old) {
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unsigned char result;
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__asm__ __volatile__(
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"lock; cmpxchgb %2, %1"
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: "=a" (result), "=m" (*a)
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: "r" (b), "m" (*a), "a" (old)
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: "memory"
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);
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return result == old;
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}
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inline bool compare_and_swap_16(uint16_t *a, uint16_t b, uint16_t old) {
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unsigned short result;
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__asm__ __volatile__(
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"lock; cmpxchgw %2, %1"
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: "=a" (result), "=m" (*a)
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: "r" (b), "m" (*a), "a" (old)
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: "memory"
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);
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return result == old;
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}
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inline bool compare_and_swap_32(uint32_t *a, uint32_t b, uint32_t old) {
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unsigned int result;
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__asm__ __volatile__(
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"lock; cmpxchgl %2, %1"
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: "=a" (result), "=m" (*a)
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: "r" (b), "m" (*a), "a" (old)
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: "memory"
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);
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return result == old;
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}
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inline bool compare_and_swap_64(uint64_t *a, uint64_t b, uint64_t old) {
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unsigned long long result;
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__asm__ __volatile__(
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"lock; cmpxchgq %2, %1"
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: "=a" (result), "=m" (*a)
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: "r" (b), "m" (*a), "a" (old)
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: "memory"
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);
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return result == old;
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}
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inline bool compare_and_swap_bool(bool *a, bool b, bool old) {
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return compare_and_swap_8((uint8_t*)a, (uint8_t)b, (uint8_t)old);
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}
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#else
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#define inline inline
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#define COMPILER_HAS_MEMCPY_INTRINSICS 0
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inline u64 rdtsc() { return 0; }
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inline Cpu_Info_X86 cpuid(u32 function_id) {return (Cpu_Info_X86){0};}
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#define COMPILER_CAN_DO_SSE2 0
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#define COMPILER_CAN_DO_AVX 0
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#define COMPILER_CAN_DO_AVX2 0
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#define COMPILER_CAN_DO_AVX512 0
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#define deprecated(msg)
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#warning "Compiler is not explicitly supported, some things will probably not work as expected"
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#endif
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Cpu_Capabilities query_cpu_capabilities() {
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Cpu_Capabilities result = {0};
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Cpu_Info_X86 info = cpuid(1);
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result.sse1 = (info.edx & (1 << 25)) != 0;
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result.sse2 = (info.edx & (1 << 26)) != 0;
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result.sse3 = (info.ecx & (1 << 0)) != 0;
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result.ssse3 = (info.ecx & (1 << 9)) != 0;
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result.sse41 = (info.ecx & (1 << 19)) != 0;
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result.sse42 = (info.ecx & (1 << 20)) != 0;
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result.any_sse = result.sse1 || result.sse2 || result.sse3 || result.ssse3 || result.sse41 || result.sse42;
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result.avx = (info.ecx & (1 << 28)) != 0;
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Cpu_Info_X86 ext_info = cpuid(7);
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result.avx2 = (ext_info.ebx & (1 << 5)) != 0;
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result.avx512 = (ext_info.ebx & (1 << 16)) != 0;
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return result;
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}
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