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ne0h
Joined: 21 Feb 2008
Posts: 386
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 Posted: Sat Jan 10, 2009 1:35 am Post subject: [SOLVED] [MIPS] undefined reference $a3 |
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I'm getting some errors with this:
| Code: |
.globl _start
.set noreorder
.ent _start
set_k1:
li $k1, 0
loop:
nop
j loop
nop
check_mem:
addi $a3, $a3, 1
lw $a2, $a3($a1)
beq $a2, $a0, check_mem
nop
check_saved:
lw $a2, $a3($a1)
beq $a2, $a0, loop
nop
break
_start:
li $a0, 0x00000000
li $a1, 0x88000000
li $a3, -1
j check_mem
nop
sw $a0, $a3($a1)
j check_saved
nop
.set reorder
.end _start
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Sorry, I'm trying to learn mips...
The error log:
| Quote: | main.o: In function `check_mem':
: undefined reference to `$a3'
main.o: In function `check_mem':
: undefined reference to `$a3'
main.o: In function `check_saved':
: undefined reference to `$a3'
main.o: In function `check_saved':
: undefined reference to `$a3'
main.o: In function `_start':
: undefined reference to `$a3'
main.o:: more undefined references to `$a3' follow
make: *** [build_asm] Error 1 |
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Last edited by ne0h on Sun Jan 11, 2009 2:50 am; edited 1 time in total |
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hlide
Joined: 10 Sep 2006
Posts: 750
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| Posted: Sat Jan 10, 2009 2:19 am Post subject: |
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no wonder... just have a look on a MIPS assembly instructions manual : there are something wrong in :
I'm letting you to guess what is wrong as an exercise. |
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ne0h
Joined: 21 Feb 2008
Posts: 386
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| Posted: Sat Jan 10, 2009 3:09 am Post subject: |
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mmm,
this will load a word on a2 at address (a3 + a1), what's wrong?
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hlide
Joined: 10 Sep 2006
Posts: 750
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| Posted: Sat Jan 10, 2009 6:33 am Post subject: |
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| such an instruction doesn't exist... |
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NoEffex
Joined: 27 Nov 2008
Posts: 108
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| Posted: Sat Jan 10, 2009 9:47 am Post subject: |
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addu $t9, $a3, $a1
lw $a2, 0x0000($t9)
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Last edited by NoEffex on Tue Jan 13, 2009 8:41 am; edited 2 times in total |
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ne0h
Joined: 21 Feb 2008
Posts: 386
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| Posted: Sun Jan 11, 2009 1:54 am Post subject: |
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I can't figure out where is my problem!
if is possible I want to know why I cannot do what I've done...
Thanks
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ab5000
Joined: 06 May 2008
Posts: 74
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ne0h
Joined: 21 Feb 2008
Posts: 386
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| Posted: Sun Jan 11, 2009 2:50 am Post subject: |
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Ok, I've understand, thanks
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