Programming Forums > Application Development > Assembly

samra · Feb 21st, 2005, 11:17 AM

HI, i am new here & i urgently need help :o
I need to rewrite this code in assembly language making the right adjusments

(Toggle Plain Text)

INTEGER B = 0
INTEGER C = 10
INTEGER D = 100
for (A= 15 ; A>=0; A--) 
{
B += C;
IF (B >= D)
B += C;
}

please please please i really need this urgently iam drawning in search & iam new in programming

. help me. my professor will kill me
& i will appreciate your help very much it really means alot for me.

Dizzutch · Feb 21st, 2005, 11:59 AM

gcc -S file.c ..

your professor should be there for questions, go see him. We can teach you assembley in a post.

samra · Feb 21st, 2005, 2:23 PM

thanku. nice to take time & reply.
u think i want the nswer ready?
well, no it's not this.
our pro. is not the kind of professors that might answer.
this is just a course in microprocessor lab & he gave us the assignment & did not teach us these stuff (self study i think)
but i am new & i really spent a lot of hours searching & i didn't get it. it's all driving me crazy with all the code & commands i see & i don't understand a bit.
+ i searched 3 books & not get any clue

is this it? u won't help me???

ok just give me aclue & i will continue my self.
i want to learn please

regards

tempest · Feb 21st, 2005, 3:29 PM

(Toggle Plain Text)

        .file   "test.c"
        .text
.globl main
        .type   main, @function
main:
        pushl   %ebp
        movl    %esp, %ebp
        subl    $24, %esp
        andl    $-16, %esp
        movl    $0, %eax
        subl    %eax, %esp
        movl    $0, -4(%ebp)
        movl    $10, -8(%ebp)
        movl    $100, -12(%ebp)
        movl    $15, -16(%ebp)
.L2:
        cmpl    $0, -16(%ebp)
        jns     .L5
        jmp     .L3
.L5:
        movl    -8(%ebp), %eax
        leal    -4(%ebp), %edx
        addl    %eax, (%edx)
        movl    -4(%ebp), %eax
        cmpl    -12(%ebp), %eax
        jl      .L4
        movl    -8(%ebp), %edx
        leal    -4(%ebp), %eax
        addl    %edx, (%eax)
.L4:
        leal    -16(%ebp), %eax
        decl    (%eax)
        jmp     .L2
.L3:
        movl    $0, %eax
        leave
        ret
        .size   main, .-main
        .section        .note.GNU-stack,"",@progbits
        .ident  "GCC: (GNU) 3.3.5 (Debian 1:3.3.5-3)"

Mjordan2nd · Feb 21st, 2005, 8:32 PM

Quote:

Originally Posted by samra

+ i searched 3 books & not get any clue

is this it? u won't help me???

ok just give me aclue & i will continue my self.
i want to learn please

regards

Dizzutch was trying to help you. What he was saying, is that if you have a copy of the GNU C compiler, then using the command he gave will turn your C code into assembly code.

samra · Feb 22nd, 2005, 1:50 AM

thanku Dizzutch, tempest, Machiavelli, and all those who passed by.
i am sorrrrrrry for the misunderstanding. but i am REALLY NEW. & feel bad about my unconsciousness. in fact i use command prompt (DEBUG) to write the code, till now we have not met any of the assemblers i saw many talk about in the internet, like MASM, RASM etc.. if i am not wrong.
again thanks alot. & sorry for not mentioning this in the beginning.
& tempest i dont get the code u wrote, :o sorry
here is the code i felt will work but am not sure coz i don't know how to test

(Toggle Plain Text)

        MOV BX,0   ; THIS IS THE B=0
        MOV CX,10 ; THIS IS THE COUNTER a=15
        MOV AX,A  ; AX=C = 10
        MOV DX,64 ; D=100
ONE :CMP CX,0
        DEC CX
        JGE LP
LP:    ADD BX,AX
        CMP BX,DX
        JL ONE
        JGE LP
        HLT

any body know what i am talking about, if u dont mind check. & tell me whats wrong or what should be corrected?

Christian_Rosenkreuz_777 · Feb 22nd, 2005, 8:07 PM

I don't know exactly how much you know, so I'll walk you through this step by step (btw, this is on how to test your program).

1.) type 'a'
2.) type your code
3.) type 'n'+(insert desired name of program here)+'.com' or '.exe' (depends on
presence or lack of stack; since you're a newbie, it's probably .com)
4.) type 'RCX'
5.) type 'A'
6.) type 'w'
7.) type 'q'
now just go to the directory where your program was and run the program by the name you gave it in step 3 (minus the 'n')
Hope this helps. I know assembly's hard (trust me)

samra · Mar 3rd, 2005, 12:11 AM

thank you, i couldnot follow. & yes assembly is difficult. right now we are using the turbo pascal editor.
regards

liquidsilver · Mar 11th, 2005, 3:53 PM

I suggest you download MASM (or the likes) as it just makes it soo much easier.

Thanx for that gcc tip, I never new

Feb 21st, 2005, 11:17 AM	#1
samra Newbie Join Date: Feb 2005 Posts: 11 Rep Power: 0	urgent: please EXPERTS: convert C to assembly HI, i am new here & i urgently need help :o I need to rewrite this code in assembly language making the right adjusments (Toggle Plain Text) INTEGER B = 0 INTEGER C = 10 INTEGER D = 100 for (A= 15 ; A>=0; A--) { B += C; IF (B >= D) B += C; } INTEGER B = 0 INTEGER C = 10 INTEGER D = 100 for (A= 15 ; A>=0; A--) { B += C; IF (B >= D) B += C; } please please please i really need this urgently iam drawning in search & iam new in programming . help me. my professor will kill me & i will appreciate your help very much it really means alot for me.

Feb 21st, 2005, 11:59 AM	#2
Dizzutch Professional Programmer Join Date: Dec 2004 Location: Worcester, MA Posts: 441 Rep Power: 4	gcc -S file.c .. your professor should be there for questions, go see him. We can teach you assembley in a post. __________________ naked pictures of you \| PFO F@H stats

Feb 21st, 2005, 3:29 PM	#4
tempest Programming Guru Join Date: Oct 2004 Posts: 1,041 Rep Power: 6	(Toggle Plain Text) .file "test.c" .text .globl main .type main, @function main: pushl %ebp movl %esp, %ebp subl $24, %esp andl $-16, %esp movl $0, %eax subl %eax, %esp movl $0, -4(%ebp) movl $10, -8(%ebp) movl $100, -12(%ebp) movl $15, -16(%ebp) .L2: cmpl $0, -16(%ebp) jns .L5 jmp .L3 .L5: movl -8(%ebp), %eax leal -4(%ebp), %edx addl %eax, (%edx) movl -4(%ebp), %eax cmpl -12(%ebp), %eax jl .L4 movl -8(%ebp), %edx leal -4(%ebp), %eax addl %edx, (%eax) .L4: leal -16(%ebp), %eax decl (%eax) jmp .L2 .L3: movl $0, %eax leave ret .size main, .-main .section .note.GNU-stack,"",@progbits .ident "GCC: (GNU) 3.3.5 (Debian 1:3.3.5-3)" .file "test.c" .text .globl main .type main, @function main: pushl %ebp movl %esp, %ebp subl $24, %esp andl $-16, %esp movl $0, %eax subl %eax, %esp movl $0, -4(%ebp) movl $10, -8(%ebp) movl $100, -12(%ebp) movl $15, -16(%ebp) .L2: cmpl $0, -16(%ebp) jns .L5 jmp .L3 .L5: movl -8(%ebp), %eax leal -4(%ebp), %edx addl %eax, (%edx) movl -4(%ebp), %eax cmpl -12(%ebp), %eax jl .L4 movl -8(%ebp), %edx leal -4(%ebp), %eax addl %edx, (%eax) .L4: leal -16(%ebp), %eax decl (%eax) jmp .L2 .L3: movl $0, %eax leave ret .size main, .-main .section .note.GNU-stack,"",@progbits .ident "GCC: (GNU) 3.3.5 (Debian 1:3.3.5-3)" __________________

Feb 22nd, 2005, 1:50 AM	#6
samra Newbie Join Date: Feb 2005 Posts: 11 Rep Power: 0	thanku Dizzutch, tempest, Machiavelli, and all those who passed by. i am sorrrrrrry for the misunderstanding. but i am REALLY NEW. & feel bad about my unconsciousness. in fact i use command prompt (DEBUG) to write the code, till now we have not met any of the assemblers i saw many talk about in the internet, like MASM, RASM etc.. if i am not wrong. again thanks alot. & sorry for not mentioning this in the beginning. & tempest i dont get the code u wrote, :o sorry here is the code i felt will work but am not sure coz i don't know how to test (Toggle Plain Text) MOV BX,0 ; THIS IS THE B=0 MOV CX,10 ; THIS IS THE COUNTER a=15 MOV AX,A ; AX=C = 10 MOV DX,64 ; D=100 ONE :CMP CX,0 DEC CX JGE LP LP: ADD BX,AX CMP BX,DX JL ONE JGE LP HLT MOV BX,0 ; THIS IS THE B=0 MOV CX,10 ; THIS IS THE COUNTER a=15 MOV AX,A ; AX=C = 10 MOV DX,64 ; D=100 ONE :CMP CX,0 DEC CX JGE LP LP: ADD BX,AX CMP BX,DX JL ONE JGE LP HLT any body know what i am talking about, if u dont mind check. & tell me whats wrong or what should be corrected? Last edited by samra; Feb 22nd, 2005 at 2:15 AM.

Feb 22nd, 2005, 8:07 PM	#7
Christian_Rosenkreuz_777 Newbie Join Date: Feb 2005 Location: Charlottesville, VA (rated #1 place to live) Posts: 25 Rep Power: 0	In the debug util. . . I don't know exactly how much you know, so I'll walk you through this step by step (btw, this is on how to test your program). 1.) type 'a' 2.) type your code 3.) type 'n'+(insert desired name of program here)+'.com' or '.exe' (depends on presence or lack of stack; since you're a newbie, it's probably .com) 4.) type 'RCX' 5.) type 'A' 6.) type 'w' 7.) type 'q' now just go to the directory where your program was and run the program by the name you gave it in step 3 (minus the 'n') Hope this helps. I know assembly's hard (trust me)

Feb 21st, 2005, 2:23 PM	#3
samra Newbie Join Date: Feb 2005 Posts: 11 Rep Power: 0	thanku. nice to take time & reply. u think i want the nswer ready? well, no it's not this. our pro. is not the kind of professors that might answer. this is just a course in microprocessor lab & he gave us the assignment & did not teach us these stuff (self study i think) but i am new & i really spent a lot of hours searching & i didn't get it. it's all driving me crazy with all the code & commands i see & i don't understand a bit. + i searched 3 books & not get any clue is this it? u won't help me??? ok just give me aclue & i will continue my self. i want to learn please regards

Mar 3rd, 2005, 12:11 AM	#8
samra Newbie Join Date: Feb 2005 Posts: 11 Rep Power: 0	thank you, i couldnot follow. & yes assembly is difficult. right now we are using the turbo pascal editor. regards

Mar 11th, 2005, 3:53 PM	#9
liquidsilver Newbie Join Date: Mar 2005 Location: South Africa Posts: 21 Rep Power: 0	I suggest you download MASM (or the likes) as it just makes it soo much easier. Thanx for that gcc tip, I never new __________________ Small is beautiful

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Programming Forums > Application Development > Assembly

urgent: please EXPERTS: convert C to assembly