diff options
Diffstat (limited to 'source/sw_protect.c')
| -rw-r--r-- | source/sw_protect.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/source/sw_protect.c b/source/sw_protect.c new file mode 100644 index 0000000..7c6e5c2 --- /dev/null +++ b/source/sw_protect.c @@ -0,0 +1,34 @@ +#include "q_shared.h" + +#ifdef _WIN32 +#define WIN32_LEAN_AND_MEAN +#include <windows.h> +#else +#include <unistd.h> +#include <sys/mman.h> +#endif + +/* +================ +Sys_MakeCodeWriteable +================ +*/ +void Sys_MakeCodeWriteable (unsigned long startaddr, unsigned long length) { +#ifdef _WIN32 + DWORD flOldProtect; + + if (!VirtualProtect((LPVOID)startaddr, length, PAGE_READWRITE, &flOldProtect)) + Com_Error(ERR_FATAL, "Protection change failed\n"); +#else + int r; + unsigned long addr; + int psize = getpagesize(); + + addr = (startaddr & ~(psize-1)) - psize; + + r = mprotect((char*)addr, length + startaddr - addr + psize, 7); + if (r < 0) + Com_Error( ERR_FATAL, "Protection change failed\n"); +#endif +} + |