SPARC 程序集 Scanf 错误

Question

我已将我的代码附加到此 post。但是，当我在 gdb 上运行它时，一旦它扫描了第一个数字和第二个数字，它就会给我一个 "Program received signal SIGSEGV, Segmentation fault." 错误。我将不胜感激任何帮助来纠正这个问题。谢谢！

 .align 4
    .section        ".bss"
    input: .skip 4

    .section        ".data"
    format: .asciz "%d"
    string1: .asciz "Enter Number 1:\n"
    string2: .asciz "Enter Number 2:\n"
    string3: .asciz "The sum of %d and %d is %d\n"

    .section        ".text"

    .global main
    main:
    save %sp, -96, %sp

    set string1, %o0
    call printf
    nop
    set format, %o0
    set input, %o1
    call scanf
    nop
    set string2, %o0
    call printf
    nop
    set format, %o0
    set input, %o2
    call scanf
    nop
    add %o1, %o2, %o3
    set string3, %o0
    ld [%o1], %o1
    ld [%o2], %o2
    ld [%o3], %o3
    call printf
    nop
    ret
    restore

    mov 1, %g1
    ta 0

Answer 1

我认为它应该看起来更像这样但是我从来没有写过 SPARC 程序集 O:)

.align 4
.section        ".bss"
input1: .skip 4
input2: .skip 4

.section        ".data"
format: .asciz "%d"
string1: .asciz "Enter Number 1:\n"
string2: .asciz "Enter Number 2:\n"
string3: .asciz "The sum of %d and %d is %d\n"

.section        ".text"

.global main
main:
save %sp, -96, %sp

set string1, %o0
call printf

set format, %o0
set input1, %o1
call scanf

set string2, %o0
call printf

set format, %o0
set input2, %o1
call scanf

set input1, %o1
ld [%o1], %o1
set input2, %o2
ld [%o2], %o2
add %o1, %o2, %o3

set string3, %o0
call printf
nop
ret
restore

mov 1, %g1
ta 0

Answer 2

感谢 Stefan 和 Jester 的帮助，我得以解决问题！[=12=]

! SungJae Kim

！ b321024 ！作业 5 ！ 2016 年 12 月 2 日

.align 4
.section    ".bss"
input1: .skip 4
input2: .skip 4

.section    ".data"
format: .asciz "%d"
string1: .asciz "Enter Number 1:\n"
string2: .asciz "Enter Number 2:\n"
string3: .asciz "The sum of %d and %d is %d\n"

.section    ".text"

.global main
main:
save %sp, -96, %sp

set string1, %o0
call printf
nop
set format, %o0
set input1, %o1
call scanf
nop
set string2, %o0
call printf
nop
set format, %o0
set input2, %o1
call scanf
nop
set input1, %o1
ld [%o1], %o1
set input2, %o2
ld [%o2], %o2
add %o1, %o2, %o3
set string3, %o0
call printf
nop
ret
restore

mov 1, %g1
ta 0

SPARC 程序集 Scanf 错误

SPARC Assembly Scanf Error

assembly

computer-science

cpu-architecture

sparc

segmentation-fault