forked from Mirror/SafeB9SInstaller
53 lines
1006 B
ArmAsm
53 lines
1006 B
ArmAsm
@ Wolfvak - 25/01/2017
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@ TODO: ELF launcher
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@ void Chainload(u8 *source, size_t size)
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@ Wrapper around chainload_itcm
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.arm
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.global Chainload
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.type Chainload, %function
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Chainload:
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ldr r2, =0x1FF8100 @ ITCM + 0x100 bytes
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mov r3, r2
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ldr r4, =chainload_itcm
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ldr r5, =chainload_itcm_end
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.copy_chainloader:
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cmp r4, r5
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ldrlt r6, [r4], #4
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strlt r6, [r3], #4
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blt .copy_chainloader
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bx r2 @ Branch to the real chainloader in ITCM
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@ void chainload_itcm(void)
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@ Note: Uses unprotected bootrom functions
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.arm
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.type chainload_itcm, %function
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.align 4
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chainload_itcm:
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mov r2, r1
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ldr r1, =0x23F00000
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mov r4, r1 @ memcpy256 and clean_flush_cache mess with the registers
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ldr r3, =0xFFFF03F0 @ memcpy256(u32 *src, u32 *ddest, size_t size)
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blx r3
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ldr r3, =0xFFFF0830 @ void clean_flush_cache(void)
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blx r3
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mov r3, r4
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mov r0, #0 @ Clear argc
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mov r1, #0 @ Same for argv
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mov r2, #0
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mov lr, #0
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bx r3
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.pool
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chainload_itcm_end:
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