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|
#
# @LANG: asm
# @GENERATED: true
#
.section .data
.comm comm,8,8
.text
.section .data
.comm top,8,8
.text
.section .data
.comm stack,8,8
.text
%%{
machine gotocallret;
# A reference to a state in an unused action caused a segfault in 5.8. */
action unusedAction {
movq $fentry(garble_line), %rax
pushq %rax
popq %rax
}
action err_garbling_line {
.section .rodata
1:
.string "error: garbling line\n"
.text
movq $1b, %rax
pushq %rax
movq $.L_fmt_str, %rdi
popq %rsi
movq $0, %rax
call printf
}
action goto_main {
fnext main;
}
action recovery_failed {
.section .rodata
2:
.string "error: failed to recover\n"
.text
movq $2b, %rax
pushq %rax
movq $.L_fmt_str, %rdi
popq %rsi
movq $0, %rax
call printf
}
# Error machine, consumes to end of
# line, then starts the main line over.
garble_line := ( (any-'\n')*'\n')
>err_garbling_line
@goto_main
$/recovery_failed;
action hold_and_return {
fhold;
fnret;
}
# Look for a string of alphas or of digits,
# on anything else, hold the character and return.
alp_comm := alpha+ $!hold_and_return;
dig_comm := digit+ $!hold_and_return;
# Choose which to machine to call into based on the command.
action comm_arg {
movq comm (%rip), %rax
pushq %rax
movq $97 , %rax
pushq %rax
popq %rcx
popq %rax
cmp %rcx, %rax
setge %al
movsbq %al, %rax
pushq %rax
popq %rax
test %rax, %rax
jz 3f
fncall alp_comm;
jmp 4f
3:
fncall dig_comm;
4:
}
# Specifies command string. Note that the arg is left out.
command = (
[a-z0-9] @{
movsbq (%r12), %rax
pushq %rax
popq %rax
movq %rax, comm (%rip)
} ' ' @comm_arg @{
.section .rodata
5:
.string "prints\n"
.text
movq $5b, %rax
pushq %rax
movq $.L_fmt_str, %rdi
popq %rsi
movq $0, %rax
call printf
} '\n'
) @{
.section .rodata
6:
.string "correct command\n"
.text
movq $6b, %rax
pushq %rax
movq $.L_fmt_str, %rdi
popq %rsi
movq $0, %rax
call printf
};
# Any number of commands. If there is an
# error anywhere, garble the line.
main := command* $!{
fhold;
fnext garble_line;
};
}%%
.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 gotocallret_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 "lkajsdf\n"
.L_inp_1:
.string "2134\n"
.L_inp_2:
.string "(\n"
.L_inp_3:
.string "\n"
.L_inp_4:
.string "*234234()0909 092 -234aslkf09`1 11\n"
.L_inp_5:
.string "1\n"
.L_inp_6:
.string "909\n"
.L_inp_7:
.string "1 a\n"
.L_inp_8:
.string "11 1\n"
.L_inp_9:
.string "a 1\n"
.L_inp_10:
.string "aa a\n"
.L_inp_11:
.string "1 1\n"
.L_inp_12:
.string "1 123456\n"
.L_inp_13:
.string "a a\n"
.L_inp_14:
.string "a abcdef\n"
.L_inp_15:
.string "h"
.L_inp_16:
.string "a aa1"
.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
.quad .L_inp_9
.quad .L_inp_10
.quad .L_inp_11
.quad .L_inp_12
.quad .L_inp_13
.quad .L_inp_14
.quad .L_inp_15
.quad .L_inp_16
.align 8
inplen:
.quad 17
.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
|
