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24 lines
384 B
24 lines
384 B
.text
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.globl _start
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_start:
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# set ebp for backtrace
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movl $0x0, %ebp
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# load argc and argv
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movl (%esp), %ebx
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lea 0x4(%esp), %ecx
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# move down the esp register
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# since it may cause page fault in backtrace
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subl $0x20, %esp
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# save argc and argv on stack
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pushl %ecx
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pushl %ebx
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# call user-program function
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call umain
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1: jmp 1b
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