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LDR Register Assignment

Note: This was originally posted on 22nd February 2012 at http://forums.arm.com

Here I'm doing basic assignments and read write routines for
verfication:


 ldr r1, StartRegs 
  ...
  StartRegs: .word 0x00000989

This code worked fine, but a few lines down the program I try
to assign r4 a value just like StartRegs. Instead of being able to
use the same format in the previous code I posted, it was neccessary
to use this format:


  ldr  r4, =EndRegs

  ...

  EndRegs:   .word   0xFFFFFFFF

If I didn't use the "=" operator, r4 was never stored with anything. My question
is why did I have to use the "=" operator in one part of the code as opposed to
another part of the code?

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Jerry Fan over 12 years ago

Note: This was originally posted on 29th February 2012 at http://forums.arm.com

ldr rx, [mem], such as
ldr r0, data1
data1 .word 0x00001

ldr rx, =const, such as
ldr r0, =0x12345678
Once "=", a const is expected.
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Jerry Fan over 12 years ago

Note: This was originally posted on 29th February 2012 at http://forums.arm.com

ldr rx, [mem], such as
ldr r0, data1
data1 .word 0x00001

ldr rx, =const, such as
ldr r0, =0x12345678
Once "=", a const is expected.
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