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Use allocExecutableMemory

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This commit is contained in:
tevador 2019-02-12 18:18:02 +01:00
parent 0b1761a846
commit 5a89c9b28e
1 changed files with 5 additions and 25 deletions
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30
src/JitCompilerX86.cpp
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@ -17,30 +17,18 @@ You should have received a copy of the GNU General Public License
along with RandomX. If not, see<http://www.gnu.org/licenses/>.
*/
#define MAGIC_DIVISION
#include "JitCompilerX86.hpp"
#include "Program.hpp"
#include <cstring>
#include <stdexcept>
#ifdef MAGIC_DIVISION
#include "JitCompilerX86.hpp"
#include "Program.hpp"
#include "divideByConstantCodegen.h"
#endif
#ifdef _WIN32
#include <windows.h>
#else
#include <sys/types.h>
#include <sys/mman.h>
#ifndef MAP_ANONYMOUS
#define MAP_ANONYMOUS MAP_ANON
#endif
#endif
#include "virtualMemory.hpp"
namespace RandomX {
#if !defined(_M_X64) && !defined(__x86_64__)
JitCompilerX86::JitCompilerX86() {
//throw std::runtime_error("JIT compiler only supports x86-64 CPUs");
throw std::runtime_error("JIT compiler only supports x86-64 CPUs");
}
void JitCompilerX86::generateProgram(Program& p) {
@ -186,15 +174,7 @@ namespace RandomX {
}
JitCompilerX86::JitCompilerX86() {
#ifdef _WIN32
code = (uint8_t*)VirtualAlloc(nullptr, CodeSize, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
if (code == nullptr)
throw std::runtime_error("VirtualAlloc failed");
#else
code = (uint8_t*)mmap(nullptr, CodeSize, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
if (code == (uint8_t*)-1)
throw std::runtime_error("mmap failed");
#endif
code = (uint8_t*)allocExecutableMemory(CodeSize);
memcpy(code, codePrologue, prologueSize);
memcpy(code + CodeSize - epilogueSize, codeEpilogue, epilogueSize);
}