c5ebe1f30a
Enable SSE4/AVX detection for AMD platforms (Bulldozer has both). Portable long long int print formatting to silence gcc 4.6 warnings.
134 lines
3.5 KiB
C
134 lines
3.5 KiB
C
/*
|
|
* Copyright 2008 Veselin Georgiev,
|
|
* anrieffNOSPAM @ mgail_DOT.com (convert to gmail)
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include "utils.h"
|
|
#include "cpuid.h"
|
|
|
|
#ifdef __x86_64__
|
|
void
|
|
exec_cpuid(uint32_t *regs)
|
|
{
|
|
#ifdef __GNUC__
|
|
__asm __volatile(
|
|
" push %%rbx\n"
|
|
" push %%rcx\n"
|
|
" push %%rdx\n"
|
|
" push %%rdi\n"
|
|
|
|
" mov %0, %%rdi\n"
|
|
|
|
" mov (%%rdi), %%eax\n"
|
|
" mov 4(%%rdi), %%ebx\n"
|
|
" mov 8(%%rdi), %%ecx\n"
|
|
" mov 12(%%rdi), %%edx\n"
|
|
|
|
" cpuid\n"
|
|
|
|
" movl %%eax, (%%rdi)\n"
|
|
" movl %%ebx, 4(%%rdi)\n"
|
|
" movl %%ecx, 8(%%rdi)\n"
|
|
" movl %%edx, 12(%%rdi)\n"
|
|
" pop %%rdi\n"
|
|
" pop %%rdx\n"
|
|
" pop %%rcx\n"
|
|
" pop %%rbx\n"
|
|
:
|
|
:"rdi"(regs)
|
|
:"memory", "eax"
|
|
);
|
|
#else
|
|
#error "Unsupported compiler"
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
cpu_exec_cpuid(uint32_t eax, uint32_t* regs)
|
|
{
|
|
regs[0] = eax;
|
|
regs[1] = regs[2] = regs[3] = 0;
|
|
exec_cpuid(regs);
|
|
}
|
|
|
|
static void
|
|
cpu_exec_cpuid_ext(uint32_t* regs)
|
|
{
|
|
exec_cpuid(regs);
|
|
}
|
|
|
|
void
|
|
cpuid_get_raw_data(struct cpu_raw_data_t* data)
|
|
{
|
|
unsigned i;
|
|
for (i = 0; i < 32; i++)
|
|
cpu_exec_cpuid(i, data->basic_cpuid[i]);
|
|
for (i = 0; i < 32; i++)
|
|
cpu_exec_cpuid(0x80000000 + i, data->ext_cpuid[i]);
|
|
for (i = 0; i < 4; i++) {
|
|
memset(data->intel_fn4[i], 0, sizeof(data->intel_fn4[i]));
|
|
data->intel_fn4[i][0] = 4;
|
|
data->intel_fn4[i][2] = i;
|
|
cpu_exec_cpuid_ext(data->intel_fn4[i]);
|
|
}
|
|
}
|
|
|
|
void
|
|
cpuid_basic_identify(processor_info_t *pc)
|
|
{
|
|
struct cpu_raw_data_t raw;
|
|
cpuid_get_raw_data(&raw);
|
|
|
|
memcpy(raw.vendor_str + 0, &raw.basic_cpuid[0][1], 4);
|
|
memcpy(raw.vendor_str + 4, &raw.basic_cpuid[0][3], 4);
|
|
memcpy(raw.vendor_str + 8, &raw.basic_cpuid[0][2], 4);
|
|
raw.vendor_str[12] = 0;
|
|
pc->avx_level = 0;
|
|
pc->sse_level = 0;
|
|
|
|
if (strcmp(raw.vendor_str, "GenuineIntel") == 0) {
|
|
pc->proc_type = PROC_X64_INTEL;
|
|
|
|
pc->sse_level = 2;
|
|
} else if (strcmp(raw.vendor_str, "AuthenticAMD") == 0) {
|
|
pc->proc_type = PROC_X64_AMD;
|
|
pc->sse_level = 2;
|
|
}
|
|
if (raw.basic_cpuid[0][0] >= 1) {
|
|
// ECX has SSE 4.2 and AVX flags
|
|
// Bit 20 is SSE 4.2 and bit 28 indicates AVX
|
|
if (raw.basic_cpuid[1][2] & (1 << 20)) {
|
|
pc->sse_level = 4;
|
|
} else {
|
|
pc->sse_level = 3;
|
|
}
|
|
pc->avx_level = 0;
|
|
if (raw.basic_cpuid[1][2] & (1 << 28)) {
|
|
pc->avx_level = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif
|