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这是一个扩展到我以前的帖子,这里是更新的代码, 到目前为止,它会输出中的最后一个数字我inputed到阵列中,所以它实际上没有求和值尚未NASM总和,装配
;*************************************ADD ARRAY**********************************************
segment .bss
sum resq 1
segment .data
summessage db "The Sum is: ", 0
segment .text
extern readdouble,print_string, read_int, writedouble, print_nl, print_int
global addarray
addarray:
pusha
mov edi, 0 ;initialize counter to 0
mov esi, 0 ;initialize accum to 0
;mov ecx, 0 ;zero out ecx and edx
;mov edx, 0
mov ebx, [ebp] ;moves starting location of array1 into ebx
mov edi, [ebp+12] ;moves array size
add_loop:
mov ecx, [ebx] ;mov higher order
mov edx, [ebx+4] ;mov lower order
push ecx
push edx
fldz
fld qword [esp] ;The second input is now in a floating point register, specifically st0.
pop dword ecx
pop dword edx ;The first input is now on top of the system stack (the stack addressed by bytes)
fadd qword [esp] ;The first input is added to the second input and the sum
;replaces the second input in st0
add ebx,8
inc esi
cmp edi, esi
jz add_done
jmp add_loop
add_done:
call print_nl
mov eax, summessage ;Setup to display a message
call print_string ;Dr. Carter's library
push dword 0 ;Make space on sytem stack for the sum value
push dword 0 ;Ditto
fst qword [esp] ;Copy contents of st0 to space currently on top of the system stack
pop edx ;Copy 4 MSBs to ecx
pop ecx ;Copy 4 LSBs to ecx
call writedouble ;Show the 8-byte value
call print_nl ;Newline
popa
ret
这个帖子中没有问题。 – Mat 2011-03-17 23:21:43
如果这是一个扩展名,你应该在原始问题中发布它。 – jtpereyda 2011-03-17 23:24:42
问题是,如果有人可以添加一些见解,为什么它不是总结和打印出正确的总和值,截至目前它唯一的打印输出到数组中的最后一个值 – John 2011-03-17 23:25:46