Binary Loader excluding NULL character for PSP

loader.s

/* by 173210 (adapted from valentine-hbl) */

.set noat
.set noreorder


addiu	$a0, $ra, 0x180	/* filename. If you change this value, move it in the savegame */
li	$a1, 258
addiu	$a2, $a1, -227
jal	sceIoOpen	/* sceIoOpen */
addiu	$a1, $a1, -257

xori	$s0, $v0, 0xFFFF	/* backup the return value of the function */
xori	$a0, $s0, 0xFFFF	/* set the return value of the function for arg0 of the next function */
lui	$a1, 0x08C0	/* arg1 is 0x08C00000, load address of the binary file */
jal	sceIoRead	/* sceIoRead */
li	$a2, 0xFFFF	/* arg2, read 0xFFFF bytes from the file */

jal	sceIoClose	/* sceIoClose */
xori	$a0, $s0, 0xFFFF	/* restore the return value of the function for arg0 of the next function */

j	sceKernelDcacheWritebackInvalidateAll	/* sceKernelDcacheWritebackInvalidateAll */
lui	$ra, 0x08C0	/* return address is 0x08C00000, load address of the binary file */