libPS4/source/jit.c

   1 #include "kernel.h"
   2 #include "module.h"
   3 #include "memory.h"
   4
   5 #include "jit.h"
   6
   7 int (*sceKernelJitCreateSharedMemory)(int flags, size_t size, int protection, int *destinationHandle);
   8 int (*sceKernelJitCreateAliasOfSharedMemory)(int handle, int protection, int *destinationHandle);
   9 int (*sceKernelJitMapSharedMemory)(int handle, int protection, void **destination);
  10
  11 void initJIT(void) {
  12         RESOLVE(libKernelHandle, sceKernelJitCreateSharedMemory);
  13         RESOLVE(libKernelHandle, sceKernelJitCreateAliasOfSharedMemory);
  14         RESOLVE(libKernelHandle, sceKernelJitMapSharedMemory);
  15 }
  16
  17 void allocateJIT(size_t size, void **executableAddress, void **writableAddress) {
  18         int executableHandle;
  19         int writableHandle;
  20
  21         sceKernelJitCreateSharedMemory(0, size, PROT_CPU_READ | PROT_CPU_WRITE | PROT_CPU_EXEC, &executableHandle);
  22         sceKernelJitCreateAliasOfSharedMemory(executableHandle, PROT_CPU_READ | PROT_CPU_WRITE, &writableHandle);
  23
  24         *executableAddress = mmap(NULL, size, PROT_CPU_READ | PROT_CPU_EXEC, MAP_SHARED, executableHandle, 0);
  25
  26         //sceKernelJitMapSharedMemory(writableHandle, PROT_CPU_READ | PROT_CPU_WRITE, writableAddress);
  27         *writableAddress = mmap(NULL, size, PROT_CPU_READ | PROT_CPU_WRITE, MAP_PRIVATE | MAP_TYPE, writableHandle, 0);
  28 }