50 lines
749 B
ArmAsm
50 lines
749 B
ArmAsm
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// MCore StartUp Code.
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.import main
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.import exit
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.text
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.export _start
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_start:
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.export _mainCRTStartup
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_mainCRTStartup:
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// Initialise the stack pointer
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lrw r1, _stack
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mov r0, r1
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// Zero the .bss data space
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lrw r1, __bss_start__
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lrw r2, __bss_end__
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movi r3, 0
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.L0:
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st r3, (r1, 0)
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addi r1, 4
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cmphs r1, r2
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bf .L0
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#ifdef __ELF__
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// Call the global/static constructors
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jbsr _init
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// Setup destructors to be called from exit,
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// just in case main never returns...
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lrw r2, _fini
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jbsr atexit
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#endif
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// Initialise the parameters to main()
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movi r2, 0 // argc
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movi r3, 0 // argv
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movi r4, 0 // envp
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// Call main
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jbsr main
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// Call exit
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movi r2, 0
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jbsr exit
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// We should never reach here.
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bkpt
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