求助求助
用汇编语言完成一个字符串统计，要求分别出字母，数字，其他字符的个数 .file "main.c".text
.section .rodata
.align 8
.LC0:
.string "letter: %lu, number: %lu, other: %lu\n"
.text
.globlmain
.type main, @function
main:
.LFB0:
.cfi_startproc
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset 6, -16
movq %rsp, %rbp
.cfi_def_cfa_register 6
subq $32, %rsp
movq $0, -24(%rbp)
movq $0, -16(%rbp)
movq $0, -8(%rbp)
jmp .L2
.L5:
call __ctype_b_loc@PLT
movq (%rax), %rdx
movl -28(%rbp), %eax
cltq
addq %rax, %rax
addq %rdx, %rax
movzwl(%rax), %eax
movzwl%ax, %eax
andl $1024, %eax
testl %eax, %eax
je .L3
addq $1, -24(%rbp)
jmp .L2
.L3:
call __ctype_b_loc@PLT
movq (%rax), %rdx
movl -28(%rbp), %eax
cltq
addq %rax, %rax
addq %rdx, %rax
movzwl(%rax), %eax
movzwl%ax, %eax
andl $2048, %eax
testl %eax, %eax
je .L4
addq $1, -16(%rbp)
jmp .L2
.L4:
addq $1, -8(%rbp)
.L2:
call getchar@PLT
movl %eax, -28(%rbp)
cmpl $-1, -28(%rbp)
jne .L5
movq -8(%rbp), %rcx
movq -16(%rbp), %rdx
movq -24(%rbp), %rax
movq %rax, %rsi
leaq .LC0(%rip), %rax
movq %rax, %rdi
movl $0, %eax
call printf@PLT
movl $0, %eax
leave
.cfi_def_cfa 7, 8
ret
.cfi_endproc
.LFE0:
.size main, .-main
.ident"GCC: (GNU) 11.1.0"
.section .note.GNU-stack,"",@progbits
这是对应的C语言代码
#include <stdio.h>
#include <ctype.h>
int main(void) {
size_t letter = 0;
size_t number = 0;
size_t other = 0;
int ch;
while((ch = getchar()) != EOF) {
if(isalpha(ch)) ++letter;
else if(isdigit(ch)) ++number;
else ++other;
}
printf("letter: %lu, number: %lu, other: %lu\n", letter, number, other);
return 0;
}
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