Suyu/dynarmic
1
0
Fork 0
mirror of https://git.suyu.dev/suyu/dynarmic.git synced 2026-01-12 01:18:01 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

Squashed 'externals/biscuit/' content from commit 1d53c9e6

Browse source 
git-subtree-dir: externals/biscuit
git-subtree-split: 1d53c9e6cfe56544982200a5bac15a5de064936b
This commit is contained in:
Merry 2024-03-02 19:36:24 +00:00
commit e4a733d5b2
55 changed files with 40248 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

39
src/cpuinfo.cpp Normal file
View file

@ -0,0 +1,39 @@
// Copyright (c), 2022, KNS Group LLC (YADRO)
//
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file or at
// https://opensource.org/licenses/MIT.
#include <biscuit/cpuinfo.hpp>
namespace biscuit {
bool CPUInfo::Has(RISCVExtension extension) const {
#if defined(__linux__) && defined(__riscv)
const static uint64_t features = getauxval(AT_HWCAP) & (
COMPAT_HWCAP_ISA_I |
COMPAT_HWCAP_ISA_M |
COMPAT_HWCAP_ISA_A |
COMPAT_HWCAP_ISA_F |
COMPAT_HWCAP_ISA_D |
COMPAT_HWCAP_ISA_C |
COMPAT_HWCAP_ISA_V
);
#else
const static uint64_t features = 0;
#endif
return (features & static_cast<uint64_t>(extension)) != 0;
}
uint32_t CPUInfo::GetVlenb() const {
if(Has(RISCVExtension::V)) {
static CSRReader<CSR::VLenb> csrReader;
const static auto getVLEN = csrReader.GetCode<uint32_t (*)()>();
return getVLEN();
}
return 0;
}
} // namespace biscuit