linux - 无法访问地址 0x ffffdfc4 处的内存

Question

我有汇编语言程序，但显示错误

“Program received signal SIGSEGV，Segentation fault”

为什么？程序如下:

.code32
.section .data

.section .text

.globl _start

_start:
pushl $3   
pushl $2 

call power
addl $8, %esp
pushl %eax

pushl $2
pushl $5
call power
addl $8, %esp
popl %ebx

addl %eax, %ebx
movl $1, %eax
int $0x80

.type power,@function
power:
pushl %ebp 
movl %esp, %ebp 
subl $4, %esp 
movl 8(%ebp), %ebx
movl 12(%ebp), %ecx
movl %ebx, -4(%ebp)

power_loop_start:
cmpl $1, %ecx 
je power_loop_end

movl -4(%ebp), %eax
imull %ebx, %eax
movl %eax, -4(%ebp)
decl %ecx 
jmp power_loop_start

power_loop_end:
movl -4(%ebp), %eax
movl %ebp, %esp
popl %ebp
ret

编译运行程序后，它显示段错误(核心转储)并且 gdb 说:

Program received signal SIGSEGV,Segregation fault.

为什么以及如何修复它？

Answer 1

我的问题是我使用64位来编译32位程序。并且我添加了一些编译器

解决这个问题的选项。如下所示:

as -32 power.s -o power.o

ld -m elf_i386 power.o -o 电源

./电源