47 lines
692 B
ArmAsm
47 lines
692 B
ArmAsm
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# FR30 startup code
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.section .text
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.global _start
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_start:
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;; Initialise the stack pointer
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ldi:32 __stack, r0
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mov r0, sp
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mov r0, fp
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;; Zero the data space
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ldi:32 #_edata, r0
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ldi:32 #_end, r1
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ldi:8 #0, r2
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.L0:
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st r2, @r0
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add #4, r0
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cmp r1, r0
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blt .L0
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;; Call global and static constructors
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ldi:32 _init, r0
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call @r0
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;; Setup destrcutors to be called from exit.
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;; (Just in case main never returns....)
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ldi:32 atexit, r0
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ldi:32 _fini, r4
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call @r0
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;; Initialise argc, argv and envp to empty
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ldi:8 #0, r4
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ldi:8 #0, r5
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ldi:8 #0, r6
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;; Call main
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ldi:32 main, r0
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call @r0
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;; Jump to exit
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ldi:32 exit, r0
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call @r0
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;; Should never reach here
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int #9
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