patch_disable_prefix_check.c File Reference

#include <tamtypes.h>
#include <kernel.h>
#include <string.h>
#include "slib.h"

Include dependency graph for patch_disable_prefix_check.c:

Go to the source code of this file.

Functions
int	sbv_patch_disable_prefix_check (void)

Variables
slib_exp_lib_list_t	_slib_cur_exp_lib_list

Detailed Description

Disable the MODLOAD check for .elf's or .irx's on certain devices.

Definition in file patch_disable_prefix_check.c.

Function Documentation

sbv_patch_disable_prefix_check()

int sbv_patch_disable_prefix_check

(

void

)

Returns

0: success, none-zero: error

The MODLOAD module has a black/white (depends on version) list that determines what devices can have unprotected EE/IOP executables loaded from. Typically, only protected executables can be loaded from user-writable media like the memory card or HDD unit. This patch will disable the black/white list, allowing executables to be freely loaded from any device.

Definition at line 24 of file patch_disable_prefix_check.c.

{
        union {
                u8 buf[256];
                slib_exp_lib_t exp_lib;
        } buf;
        static u32 patch[2] ALIGNED(16)={
                0x03e00008,     /* jr $ra */
                0x00001021      /* addiu $v0, $0, 0 */
        };
        SifDmaTransfer_t dmat;
        slib_exp_lib_t *modload_lib = &buf.exp_lib;
 
        memset(&_slib_cur_exp_lib_list, 0, sizeof(slib_exp_lib_list_t));
 
        if (!slib_get_exp_lib("modload", modload_lib))
                return -1;
 
        dmat.src=patch;
        dmat.size=sizeof(patch);        //16-bytes will be written to IOP RAM, but the function on the IOP side is longer than 16 bytes in length.
        dmat.dest=modload_lib->exports[15];
        dmat.attr=0;
 
        SifSetDma(&dmat, 1);
 
        return 0;
}

References _slib_cur_exp_lib_list, ALIGNED, SifDmaTransfer_t::attr, SifDmaTransfer_t::dest, slib_exp_lib_t::exports, SifSetDma(), SifDmaTransfer_t::size, slib_get_exp_lib(), and SifDmaTransfer_t::src.

Variable Documentation

_slib_cur_exp_lib_list

slib_exp_lib_list_t _slib_cur_exp_lib_list

extern

Definition at line 26 of file slib.c.

Referenced by sbv_patch_disable_prefix_check().