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|
#
# @LANG: asm
# @GENERATED: true
#
%%{
machine eofact;
action a1 {
.section .rodata
1:
.string "a1\n"
.text
movq $1b, %rax
pushq %rax
movq $.L_fmt_str, %rdi
popq %rsi
movq $0, %rax
call printf
}
action a2 {
.section .rodata
2:
.string "a2\n"
.text
movq $2b, %rax
pushq %rax
movq $.L_fmt_str, %rdi
popq %rsi
movq $0, %rax
call printf
}
action a3 {
.section .rodata
3:
.string "a3\n"
.text
movq $3b, %rax
pushq %rax
movq $.L_fmt_str, %rdi
popq %rsi
movq $0, %rax
call printf
}
action a4 {
.section .rodata
4:
.string "a4\n"
.text
movq $4b, %rax
pushq %rax
movq $.L_fmt_str, %rdi
popq %rsi
movq $0, %rax
call printf
}
main := (
'hello' @eof a1 %eof a2 '\n'? |
'there' @eof a3 %eof a4
);
}%%
.text
.comm buf, 1024, 32
.comm bpos, 8, 8
.comm stack_data, 1024, 32
.section .rodata
.L_str_accept:
.string "ACCEPT"
.L_str_fail:
.string "FAIL"
.L_fmt_int:
.string "%ld"
.L_fmt_str:
.string "%s"
%% write data;
.text
exec:
pushq %rbp
movq %rsp, %rbp
subq $96, %rsp
movq $stack_data, -56(%rbp)
pushq %r12
pushq %r13
movq %rdi, %r12
# Get the length.
movq %r12, %rdi
call strlen
movq %r12, %r13
movslq %eax, %rax
addq %rax, %r13
movq $0, bpos(%rip)
movq %r13, -8(%rbp)
%% write init;
%% write exec;
# current state is in r11.
movq eofact_first_final(%rip), %rax
cmpq %rax, %r11
jl .L_exec_fail
movq $.L_str_accept, %rdi
call puts
jmp .L_exec_done
.L_exec_fail:
movq $.L_str_fail, %rdi
call puts
.L_exec_done:
popq %r13
popq %r12
leave
ret
.section .rodata
.L_debug_msg:
.string "debug %d\n"
.L_inp_0:
.string ""
.L_inp_1:
.string "h"
.L_inp_2:
.string "hell"
.L_inp_3:
.string "hello"
.L_inp_4:
.string "hello\n"
.L_inp_5:
.string "t"
.L_inp_6:
.string "ther"
.L_inp_7:
.string "there"
.L_inp_8:
.string "friend"
.align 8
inp:
.quad .L_inp_0
.quad .L_inp_1
.quad .L_inp_2
.quad .L_inp_3
.quad .L_inp_4
.quad .L_inp_5
.quad .L_inp_6
.quad .L_inp_7
.quad .L_inp_8
.align 8
inplen:
.quad 9
.text
.globl main
main:
pushq %rbp
movq %rsp, %rbp
pushq %r12
movq $0, %r12
.L_again:
movq inplen(%rip), %rax
cmpq %r12, %rax
je .L_done
movq inp(,%r12,8), %rdi
call exec
incq %r12
jmp .L_again
.L_done:
popq %r12
mov $0, %rax
leave
ret
debug:
movl %edi, %esi
movq $0, %rax
movq $.L_debug_msg, %rdi
call printf
ret
|
