27 lines
913 B
Plaintext
27 lines
913 B
Plaintext
# Multiply 2 numbers.
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#
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# To run:
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# $ bootstrap/bootstrap translate ex14.subx -o ex14
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# $ bootstrap/bootstrap run ex14
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# Expected result:
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# $ echo $?
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# 6
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== code
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# instruction effective address register displacement immediate
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# . op subop mod rm32 base index scale r32
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# . 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes
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Entry:
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b8/copy-to-eax 1/imm32
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b9/copy-to-ecx 2/imm32
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bb/copy-to-ebx 3/imm32
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69/multiply 3/mod/direct 1/rm32/ecx . . . 3/r32/ebx 3/imm32 # ebx = ecx * 3
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$exit:
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# exit(ebx)
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e8/call syscall_exit/disp32
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# . . vim:nowrap:textwidth=0
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