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rpcs3/3rdparty/7z/src/CpuArch.c
Ani 7ef112cf30 7z: Update from 19.00 to 21.07
2022-04-24 08:26:26 +02:00

479 lines
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/* CpuArch.c -- CPU specific code
2021-07-13 : Igor Pavlov : Public domain */
#include "Precomp.h"
#include "CpuArch.h"
#ifdef MY_CPU_X86_OR_AMD64
#if (defined(_MSC_VER) && !defined(MY_CPU_AMD64)) || defined(__GNUC__)
#define USE_ASM
#endif
#if !defined(USE_ASM) && _MSC_VER >= 1500
#include <intrin.h>
#endif
#if defined(USE_ASM) && !defined(MY_CPU_AMD64)
static UInt32 CheckFlag(UInt32 flag)
{
#ifdef _MSC_VER
__asm pushfd;
__asm pop EAX;
__asm mov EDX, EAX;
__asm xor EAX, flag;
__asm push EAX;
__asm popfd;
__asm pushfd;
__asm pop EAX;
__asm xor EAX, EDX;
__asm push EDX;
__asm popfd;
__asm and flag, EAX;
#else
__asm__ __volatile__ (
"pushf\n\t"
"pop %%EAX\n\t"
"movl %%EAX,%%EDX\n\t"
"xorl %0,%%EAX\n\t"
"push %%EAX\n\t"
"popf\n\t"
"pushf\n\t"
"pop %%EAX\n\t"
"xorl %%EDX,%%EAX\n\t"
"push %%EDX\n\t"
"popf\n\t"
"andl %%EAX, %0\n\t":
"=c" (flag) : "c" (flag) :
"%eax", "%edx");
#endif
return flag;
}
#define CHECK_CPUID_IS_SUPPORTED if (CheckFlag(1 << 18) == 0 || CheckFlag(1 << 21) == 0) return False;
#else
#define CHECK_CPUID_IS_SUPPORTED
#endif
#ifndef USE_ASM
#ifdef _MSC_VER
#if _MSC_VER >= 1600
#define MY__cpuidex __cpuidex
#else
/*
__cpuid (function == 4) requires subfunction number in ECX.
MSDN: The __cpuid intrinsic clears the ECX register before calling the cpuid instruction.
__cpuid() in new MSVC clears ECX.
__cpuid() in old MSVC (14.00) doesn't clear ECX
We still can use __cpuid for low (function) values that don't require ECX,
but __cpuid() in old MSVC will be incorrect for some function values: (function == 4).
So here we use the hack for old MSVC to send (subFunction) in ECX register to cpuid instruction,
where ECX value is first parameter for FAST_CALL / NO_INLINE function,
So the caller of MY__cpuidex_HACK() sets ECX as subFunction, and
old MSVC for __cpuid() doesn't change ECX and cpuid instruction gets (subFunction) value.
DON'T remove MY_NO_INLINE and MY_FAST_CALL for MY__cpuidex_HACK() !!!
*/
static
MY_NO_INLINE
void MY_FAST_CALL MY__cpuidex_HACK(UInt32 subFunction, int *CPUInfo, UInt32 function)
{
UNUSED_VAR(subFunction);
__cpuid(CPUInfo, function);
}
#define MY__cpuidex(info, func, func2) MY__cpuidex_HACK(func2, info, func)
#pragma message("======== MY__cpuidex_HACK WAS USED ========")
#endif
#else
#define MY__cpuidex(info, func, func2) __cpuid(info, func)
#pragma message("======== (INCORRECT ?) cpuid WAS USED ========")
#endif
#endif
void MyCPUID(UInt32 function, UInt32 *a, UInt32 *b, UInt32 *c, UInt32 *d)
{
#ifdef USE_ASM
#ifdef _MSC_VER
UInt32 a2, b2, c2, d2;
__asm xor EBX, EBX;
__asm xor ECX, ECX;
__asm xor EDX, EDX;
__asm mov EAX, function;
__asm cpuid;
__asm mov a2, EAX;
__asm mov b2, EBX;
__asm mov c2, ECX;
__asm mov d2, EDX;
*a = a2;
*b = b2;
*c = c2;
*d = d2;
#else
__asm__ __volatile__ (
#if defined(MY_CPU_AMD64) && defined(__PIC__)
"mov %%rbx, %%rdi;"
"cpuid;"
"xchg %%rbx, %%rdi;"
: "=a" (*a) ,
"=D" (*b) ,
#elif defined(MY_CPU_X86) && defined(__PIC__)
"mov %%ebx, %%edi;"
"cpuid;"
"xchgl %%ebx, %%edi;"
: "=a" (*a) ,
"=D" (*b) ,
#else
"cpuid"
: "=a" (*a) ,
"=b" (*b) ,
#endif
"=c" (*c) ,
"=d" (*d)
: "0" (function), "c"(0) ) ;
#endif
#else
int CPUInfo[4];
MY__cpuidex(CPUInfo, (int)function, 0);
*a = (UInt32)CPUInfo[0];
*b = (UInt32)CPUInfo[1];
*c = (UInt32)CPUInfo[2];
*d = (UInt32)CPUInfo[3];
#endif
}
BoolInt x86cpuid_CheckAndRead(Cx86cpuid *p)
{
CHECK_CPUID_IS_SUPPORTED
MyCPUID(0, &p->maxFunc, &p->vendor[0], &p->vendor[2], &p->vendor[1]);
MyCPUID(1, &p->ver, &p->b, &p->c, &p->d);
return True;
}
static const UInt32 kVendors[][3] =
{
{ 0x756E6547, 0x49656E69, 0x6C65746E},
{ 0x68747541, 0x69746E65, 0x444D4163},
{ 0x746E6543, 0x48727561, 0x736C7561}
};
int x86cpuid_GetFirm(const Cx86cpuid *p)
{
unsigned i;
for (i = 0; i < sizeof(kVendors) / sizeof(kVendors[i]); i++)
{
const UInt32 *v = kVendors[i];
if (v[0] == p->vendor[0] &&
v[1] == p->vendor[1] &&
v[2] == p->vendor[2])
return (int)i;
}
return -1;
}
BoolInt CPU_Is_InOrder()
{
Cx86cpuid p;
int firm;
UInt32 family, model;
if (!x86cpuid_CheckAndRead(&p))
return True;
family = x86cpuid_GetFamily(p.ver);
model = x86cpuid_GetModel(p.ver);
firm = x86cpuid_GetFirm(&p);
switch (firm)
{
case CPU_FIRM_INTEL: return (family < 6 || (family == 6 && (
/* In-Order Atom CPU */
model == 0x1C /* 45 nm, N4xx, D4xx, N5xx, D5xx, 230, 330 */
|| model == 0x26 /* 45 nm, Z6xx */
|| model == 0x27 /* 32 nm, Z2460 */
|| model == 0x35 /* 32 nm, Z2760 */
|| model == 0x36 /* 32 nm, N2xxx, D2xxx */
)));
case CPU_FIRM_AMD: return (family < 5 || (family == 5 && (model < 6 || model == 0xA)));
case CPU_FIRM_VIA: return (family < 6 || (family == 6 && model < 0xF));
}
return True;
}
#if !defined(MY_CPU_AMD64) && defined(_WIN32)
#include <Windows.h>
static BoolInt CPU_Sys_Is_SSE_Supported()
{
OSVERSIONINFO vi;
vi.dwOSVersionInfoSize = sizeof(vi);
if (!GetVersionEx(&vi))
return False;
return (vi.dwMajorVersion >= 5);
}
#define CHECK_SYS_SSE_SUPPORT if (!CPU_Sys_Is_SSE_Supported()) return False;
#else
#define CHECK_SYS_SSE_SUPPORT
#endif
static UInt32 X86_CPUID_ECX_Get_Flags()
{
Cx86cpuid p;
CHECK_SYS_SSE_SUPPORT
if (!x86cpuid_CheckAndRead(&p))
return 0;
return p.c;
}
BoolInt CPU_IsSupported_AES()
{
return (X86_CPUID_ECX_Get_Flags() >> 25) & 1;
}
BoolInt CPU_IsSupported_SSSE3()
{
return (X86_CPUID_ECX_Get_Flags() >> 9) & 1;
}
BoolInt CPU_IsSupported_SSE41()
{
return (X86_CPUID_ECX_Get_Flags() >> 19) & 1;
}
BoolInt CPU_IsSupported_SHA()
{
Cx86cpuid p;
CHECK_SYS_SSE_SUPPORT
if (!x86cpuid_CheckAndRead(&p))
return False;
if (p.maxFunc < 7)
return False;
{
UInt32 d[4] = { 0 };
MyCPUID(7, &d[0], &d[1], &d[2], &d[3]);
return (d[1] >> 29) & 1;
}
}
// #include <stdio.h>
#ifdef _WIN32
#include <Windows.h>
#endif
BoolInt CPU_IsSupported_AVX2()
{
Cx86cpuid p;
CHECK_SYS_SSE_SUPPORT
#ifdef _WIN32
#define MY__PF_XSAVE_ENABLED 17
if (!IsProcessorFeaturePresent(MY__PF_XSAVE_ENABLED))
return False;
#endif
if (!x86cpuid_CheckAndRead(&p))
return False;
if (p.maxFunc < 7)
return False;
{
UInt32 d[4] = { 0 };
MyCPUID(7, &d[0], &d[1], &d[2], &d[3]);
// printf("\ncpuid(7): ebx=%8x ecx=%8x\n", d[1], d[2]);
return 1
& (d[1] >> 5); // avx2
}
}
BoolInt CPU_IsSupported_VAES_AVX2()
{
Cx86cpuid p;
CHECK_SYS_SSE_SUPPORT
#ifdef _WIN32
#define MY__PF_XSAVE_ENABLED 17
if (!IsProcessorFeaturePresent(MY__PF_XSAVE_ENABLED))
return False;
#endif
if (!x86cpuid_CheckAndRead(&p))
return False;
if (p.maxFunc < 7)
return False;
{
UInt32 d[4] = { 0 };
MyCPUID(7, &d[0], &d[1], &d[2], &d[3]);
// printf("\ncpuid(7): ebx=%8x ecx=%8x\n", d[1], d[2]);
return 1
& (d[1] >> 5) // avx2
// & (d[1] >> 31) // avx512vl
& (d[2] >> 9); // vaes // VEX-256/EVEX
}
}
BoolInt CPU_IsSupported_PageGB()
{
Cx86cpuid cpuid;
if (!x86cpuid_CheckAndRead(&cpuid))
return False;
{
UInt32 d[4] = { 0 };
MyCPUID(0x80000000, &d[0], &d[1], &d[2], &d[3]);
if (d[0] < 0x80000001)
return False;
}
{
UInt32 d[4] = { 0 };
MyCPUID(0x80000001, &d[0], &d[1], &d[2], &d[3]);
return (d[3] >> 26) & 1;
}
}
#elif defined(MY_CPU_ARM_OR_ARM64)
#ifdef _WIN32
#include <Windows.h>
BoolInt CPU_IsSupported_CRC32() { return IsProcessorFeaturePresent(PF_ARM_V8_CRC32_INSTRUCTIONS_AVAILABLE) ? 1 : 0; }
BoolInt CPU_IsSupported_CRYPTO() { return IsProcessorFeaturePresent(PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE) ? 1 : 0; }
BoolInt CPU_IsSupported_NEON() { return IsProcessorFeaturePresent(PF_ARM_NEON_INSTRUCTIONS_AVAILABLE) ? 1 : 0; }
#else
#if defined(__APPLE__)
/*
#include <stdio.h>
#include <string.h>
static void Print_sysctlbyname(const char *name)
{
size_t bufSize = 256;
char buf[256];
int res = sysctlbyname(name, &buf, &bufSize, NULL, 0);
{
int i;
printf("\nres = %d : %s : '%s' : bufSize = %d, numeric", res, name, buf, (unsigned)bufSize);
for (i = 0; i < 20; i++)
printf(" %2x", (unsigned)(Byte)buf[i]);
}
}
*/
static BoolInt My_sysctlbyname_Get_BoolInt(const char *name)
{
UInt32 val = 0;
if (My_sysctlbyname_Get_UInt32(name, &val) == 0 && val == 1)
return 1;
return 0;
}
/*
Print_sysctlbyname("hw.pagesize");
Print_sysctlbyname("machdep.cpu.brand_string");
*/
BoolInt CPU_IsSupported_CRC32(void)
{
return My_sysctlbyname_Get_BoolInt("hw.optional.armv8_crc32");
}
BoolInt CPU_IsSupported_NEON(void)
{
return My_sysctlbyname_Get_BoolInt("hw.optional.neon");
}
#ifdef MY_CPU_ARM64
#define APPLE_CRYPTO_SUPPORT_VAL 1
#else
#define APPLE_CRYPTO_SUPPORT_VAL 0
#endif
BoolInt CPU_IsSupported_SHA1(void) { return APPLE_CRYPTO_SUPPORT_VAL; }
BoolInt CPU_IsSupported_SHA2(void) { return APPLE_CRYPTO_SUPPORT_VAL; }
BoolInt CPU_IsSupported_AES (void) { return APPLE_CRYPTO_SUPPORT_VAL; }
#else // __APPLE__
#include <sys/auxv.h>
#define USE_HWCAP
#ifdef USE_HWCAP
#include <asm/hwcap.h>
#define MY_HWCAP_CHECK_FUNC_2(name1, name2) \
BoolInt CPU_IsSupported_ ## name1() { return (getauxval(AT_HWCAP) & (HWCAP_ ## name2)) ? 1 : 0; }
#ifdef MY_CPU_ARM64
#define MY_HWCAP_CHECK_FUNC(name) \
MY_HWCAP_CHECK_FUNC_2(name, name)
MY_HWCAP_CHECK_FUNC_2(NEON, ASIMD)
// MY_HWCAP_CHECK_FUNC (ASIMD)
#elif defined(MY_CPU_ARM)
#define MY_HWCAP_CHECK_FUNC(name) \
BoolInt CPU_IsSupported_ ## name() { return (getauxval(AT_HWCAP2) & (HWCAP2_ ## name)) ? 1 : 0; }
MY_HWCAP_CHECK_FUNC_2(NEON, NEON)
#endif
#else // USE_HWCAP
#define MY_HWCAP_CHECK_FUNC(name) \
BoolInt CPU_IsSupported_ ## name() { return 0; }
MY_HWCAP_CHECK_FUNC(NEON)
#endif // USE_HWCAP
MY_HWCAP_CHECK_FUNC (CRC32)
MY_HWCAP_CHECK_FUNC (SHA1)
MY_HWCAP_CHECK_FUNC (SHA2)
MY_HWCAP_CHECK_FUNC (AES)
#endif // __APPLE__
#endif // _WIN32
#endif // MY_CPU_ARM_OR_ARM64
#ifdef __APPLE__
#include <sys/sysctl.h>
int My_sysctlbyname_Get(const char *name, void *buf, size_t *bufSize)
{
return sysctlbyname(name, buf, bufSize, NULL, 0);
}
int My_sysctlbyname_Get_UInt32(const char *name, UInt32 *val)
{
size_t bufSize = sizeof(*val);
int res = My_sysctlbyname_Get(name, val, &bufSize);
if (res == 0 && bufSize != sizeof(*val))
return EFAULT;
return res;
}
#endif
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