7e58a3b320
remove xe_kernel_export_shim_fn field of Export function_data, trampoline is now the only way exports get invoked Remove kernelstate argument from string functions in order to conform to the trampoline signature (the argument was unused anyway) Constant-evaluated initialization of ppc_opcode_disasm_table, removal of unused std::vector fields Constant-evaluated initialization of export tables name field on export is just a const char* now, only immutable static strings are ever passed to it Remove unused callcount field of export. PM4 compare op function extracted Globally apply /Oy, /GS-, /Gw on msvc windows Remove imgui testwindow code call, it took up like 300 kb
127 lines
4.7 KiB
C++
127 lines
4.7 KiB
C++
/**
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******************************************************************************
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* Xenia : Xbox 360 Emulator Research Project *
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******************************************************************************
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* Copyright 2020 Ben Vanik. All rights reserved. *
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* Released under the BSD license - see LICENSE in the root for more details. *
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******************************************************************************
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*/
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#include "xenia/base/cvar.h"
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#include "xenia/base/platform.h"
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#define XBYAK_NO_OP_NAMES
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#include "third_party/xbyak/xbyak/xbyak.h"
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#include "third_party/xbyak/xbyak/xbyak_util.h"
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DEFINE_int64(x64_extension_mask, -1LL,
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"Allow the detection and utilization of specific instruction set "
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"features.\n"
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" 0 = x86_64 + AVX1\n"
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" 1 = AVX2\n"
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" 2 = FMA\n"
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" 4 = LZCNT\n"
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" 8 = BMI1\n"
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" 16 = BMI2\n"
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" 32 = F16C\n"
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" 64 = Movbe\n"
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" 128 = GFNI\n"
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" 256 = AVX512F\n"
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" 512 = AVX512VL\n"
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" 1024 = AVX512BW\n"
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" 2048 = AVX512DQ\n"
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" -1 = Detect and utilize all possible processor features\n",
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"x64");
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namespace xe {
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namespace amd64 {
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static uint64_t g_feature_flags = 0U;
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static bool g_did_initialize_feature_flags = false;
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uint64_t GetFeatureFlags() {
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xenia_assert(g_did_initialize_feature_flags);
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return g_feature_flags;
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}
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XE_COLD
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XE_NOINLINE
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void InitFeatureFlags() {
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uint64_t feature_flags_ = 0U;
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{
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Xbyak::util::Cpu cpu_;
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#define TEST_EMIT_FEATURE(emit, ext) \
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if ((cvars::x64_extension_mask & emit) == emit) { \
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feature_flags_ |= (cpu_.has(ext) ? emit : 0); \
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}
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TEST_EMIT_FEATURE(kX64EmitAVX2, Xbyak::util::Cpu::tAVX2);
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TEST_EMIT_FEATURE(kX64EmitFMA, Xbyak::util::Cpu::tFMA);
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TEST_EMIT_FEATURE(kX64EmitLZCNT, Xbyak::util::Cpu::tLZCNT);
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TEST_EMIT_FEATURE(kX64EmitBMI1, Xbyak::util::Cpu::tBMI1);
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TEST_EMIT_FEATURE(kX64EmitBMI2, Xbyak::util::Cpu::tBMI2);
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TEST_EMIT_FEATURE(kX64EmitMovbe, Xbyak::util::Cpu::tMOVBE);
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TEST_EMIT_FEATURE(kX64EmitGFNI, Xbyak::util::Cpu::tGFNI);
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TEST_EMIT_FEATURE(kX64EmitAVX512F, Xbyak::util::Cpu::tAVX512F);
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TEST_EMIT_FEATURE(kX64EmitAVX512VL, Xbyak::util::Cpu::tAVX512VL);
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TEST_EMIT_FEATURE(kX64EmitAVX512BW, Xbyak::util::Cpu::tAVX512BW);
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TEST_EMIT_FEATURE(kX64EmitAVX512DQ, Xbyak::util::Cpu::tAVX512DQ);
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TEST_EMIT_FEATURE(kX64EmitAVX512VBMI, Xbyak::util::Cpu::tAVX512VBMI);
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TEST_EMIT_FEATURE(kX64EmitPrefetchW, Xbyak::util::Cpu::tPREFETCHW);
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#undef TEST_EMIT_FEATURE
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/*
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fix for xbyak bug/omission, amd cpus are never checked for lzcnt. fixed in
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latest version of xbyak
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*/
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unsigned int data[4];
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Xbyak::util::Cpu::getCpuid(0x80000001, data);
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unsigned amd_flags = data[2];
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if (amd_flags & (1U << 5)) {
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if ((cvars::x64_extension_mask & kX64EmitLZCNT) == kX64EmitLZCNT) {
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feature_flags_ |= kX64EmitLZCNT;
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}
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}
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// todo: although not reported by cpuid, zen 1 and zen+ also have fma4
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if (amd_flags & (1U << 16)) {
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if ((cvars::x64_extension_mask & kX64EmitFMA4) == kX64EmitFMA4) {
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feature_flags_ |= kX64EmitFMA4;
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}
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}
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if (amd_flags & (1U << 21)) {
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if ((cvars::x64_extension_mask & kX64EmitTBM) == kX64EmitTBM) {
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feature_flags_ |= kX64EmitTBM;
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}
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}
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if (amd_flags & (1U << 11)) {
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if ((cvars::x64_extension_mask & kX64EmitXOP) == kX64EmitXOP) {
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feature_flags_ |= kX64EmitXOP;
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}
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}
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if (cpu_.has(Xbyak::util::Cpu::tAMD)) {
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bool is_zennish = cpu_.displayFamily >= 0x17;
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/*
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chrispy: according to agner's tables, all amd architectures
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that we support (ones with avx) have the same timings for
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jrcxz/loop/loope/loopne as for other jmps
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*/
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feature_flags_ |= kX64FastJrcx;
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feature_flags_ |= kX64FastLoop;
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if (is_zennish) {
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// ik that i heard somewhere that this is the case for zen, but i need
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// to verify. cant find my original source for that. todo: ask agner?
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feature_flags_ |= kX64FlagsIndependentVars;
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}
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}
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}
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{
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unsigned int data[4];
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memset(data, 0, sizeof(data));
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// intel extended features
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Xbyak::util::Cpu::getCpuidEx(7, 0, data);
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if ((data[2] & (1 << 28)) &&
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(cvars::x64_extension_mask & kX64EmitMovdir64M)) {
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feature_flags_ |= kX64EmitMovdir64M;
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}
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if ((data[1] & (1 << 9)) && (cvars::x64_extension_mask & kX64FastRepMovs)) {
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feature_flags_ |= kX64FastRepMovs;
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}
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}
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g_feature_flags = feature_flags_;
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g_did_initialize_feature_flags = true;
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}
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} // namespace amd64
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} // namespace xe
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