41 lines
774 B
ArmAsm
41 lines
774 B
ArmAsm
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.section ".init"
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.global _interrupt_vector
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.align 4
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.arm
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.section ".init.vector"
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_interrupt_vector:
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b _reset
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b _not_implemented
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b _not_implemented
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b _not_implemented
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b _not_implemented
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b _not_implemented
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b _not_implemented
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b _not_implemented
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.section ".init.text"
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.global _reset
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_reset:
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mrs r1, cpsr @ save the mode bits from CPSR
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bic r0, r1, #0x1F
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orr r0, r0, #0x13 @ supervisor
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ldr sp, =_stack_top
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mov r0, #0
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mov r1, #0
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mov r2, #0
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mov r3, #0
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mov r4, #0
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mov r5, #0
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mov r6, #0
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mov r7, #0
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mov r9, #0
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mov r10, #0
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mov r11, #0
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mov r12, #0
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b main
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_not_implemented:
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b _not_implemented
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