29 lines
581 B
ArmAsm
29 lines
581 B
ArmAsm
.cfi_sections .debug_frame
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# .thumb
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.section .text.pre_init, "ax"
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.globl __pre_init
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.type __pre_init,%function
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.thumb_func
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.cfi_startproc
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__pre_init:
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# Analogous to cortex-m-rt Reset code for .data copying.
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# Initialise .itcm code. `__sitcm`, `__siitcm`, and `__eitcm` come from the
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# linker script. Copy from r2 into r0 until r0 reaches r1.
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ldr r0,=__sitcm
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ldr r1,=__eitcm
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ldr r2,=__siitcm
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1:
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cmp r1, r0
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beq 2f
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# load 1 word from r2 to r3, inc r2
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ldm r2!, {r3}
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# store 1 word from r3 to r0, inc r0
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stm r0!, {r3}
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b 1b
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2:
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dsb
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isb
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bx lr
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.cfi_endproc
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