format ELF64 executable
segment readable executable
main:
;; No arg preload case
cmp [rsp], word 1
jne argparse
mov r8, qword 3
mov r9, qword 2
mov r10, qword 3
jmp generate
argparse:
;; Check args (need 3)
cmp [rsp], word 3
jle fail
;; load arg1
mov r8, [rsp+16]
mov r8, [r8]
and r8, 0xFF
sub r8, 48
;; load arg2
mov r9, [rsp+24]
mov r9, [r9]
and r9, 0xFF
sub r9, 48
;; load arg3
mov r10, [rsp+32]
mov r10, [r10]
and r10, 0xFF
sub r10, 48
jmp generate
ok:
;; Write
mov rdi, 1 ;; stdout
mov rdx, rsi
mov rsi, out_buf
mov rax, 0x01
syscall
;; Exit (code 0)
mov rdi, 0
mov rax, 0x3c
syscall
fail:
;; Write
mov rdi, 1 ;; stdout
mov rsi, usage
mov rdx, usage_len
mov rax, 0x01
syscall
;; Exit 1
mov rdi, 1
mov rax, 0x3c
syscall
include 'pasmgen.inc'
segment readable writeable
include 'constants.inc'
out_buf rb 64
