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## read a character from stdin
== 0x08048054 # code segment, after leaving room for ELF header
# opcode ModR/M SIB displacement immediate
# instruction mod, reg, Reg/Mem bits scale, index, base
# 1-3 bytes 0/1 byte 0/1 byte 0/1/2/4 bytes 0/1/2/4 bytes
# 0: e_entry = 0x08048054
## read(1, x, 1)
# fd = 1
bb 1/imm32 # copy 1 to EBX
# set location to write to
b9 00 90 04 08 # copy 0x08040000 to ECX
# size = 1 character
ba 1/imm32 # copy 1 to EDX
# syscall = read
b8 3/imm32 # copy 3 to EAX
# call
cd 128/imm8 # int 80h
## exit(EBX)
b8 1/imm32 # copy 1 to EAX
cd 128/imm8 # int 80h
# vim:ft=subx:nowrap
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