mirror of
https://github.com/geode-sdk/geode.git
synced 2024-11-27 09:55:34 -05:00
34 lines
No EOL
966 B
C++
34 lines
No EOL
966 B
C++
|
|
#include "dobby_internal.h"
|
|
#include "core/arch/Cpu.h"
|
|
|
|
#include <unistd.h>
|
|
#include <sys/mman.h>
|
|
#include <string.h>
|
|
|
|
#if !defined(__APPLE__)
|
|
PUBLIC MemoryOperationError CodePatch(void *address, uint8_t *buffer, uint32_t buffer_size) {
|
|
|
|
int page_size = (int)sysconf(_SC_PAGESIZE);
|
|
uintptr_t page_align_address = ALIGN_FLOOR(address, page_size);
|
|
int offset = (uintptr_t)address - page_align_address;
|
|
|
|
#if defined(__ANDROID__) || defined(__linux__)
|
|
|
|
// change page permission as rwx
|
|
mprotect((void *)page_align_address, page_size, PROT_READ | PROT_WRITE | PROT_EXEC);
|
|
|
|
// patch buffer
|
|
memcpy((void *)((addr_t)page_align_address + offset), buffer, buffer_size);
|
|
|
|
// restore page permission
|
|
mprotect((void *)page_align_address, page_size, PROT_READ | PROT_EXEC);
|
|
#endif
|
|
|
|
addr_t clear_start_ = (addr_t)page_align_address + offset;
|
|
ClearCache((void *)clear_start_, (void *)(clear_start_ + buffer_size));
|
|
|
|
return kMemoryOperationSuccess;
|
|
}
|
|
|
|
#endif |