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Diffstat (limited to 'subx/examples/ex2.subx')
| -rw-r--r-- | subx/examples/ex2.subx | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/subx/examples/ex2.subx b/subx/examples/ex2.subx new file mode 100644 index 00000000..6463132b --- /dev/null +++ b/subx/examples/ex2.subx @@ -0,0 +1,20 @@ +## add 1 and 1, and return the result in the exit code +# +# To run: +# $ subx translate ex2.subx ex2 +# $ subx run ex2 +# Expected result: +# $ echo $? +# 2 + +== 0x08048054 # code segment, after leaving room for ELF header +# instruction effective address operand displacement immediate +# op subop mod rm32 base index scale r32 +# 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 + bb/copy 1/imm32 # copy 1 to EBX + 81 0/subop/add 3/mod/direct 3/rm32/EBX 1/imm32 # add 1 to EBX + # exit(EBX) + b8/copy 1/imm32 # copy 1 to EAX + cd/syscall 0x80/imm8 # int 80h + +# vim:ft=subx |