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Writing ARM Assembly Language
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Subroutines calls
Load immediates into registers
Load immediate values using MOV and MVN
Load 32-bit values to a register using MOV32
Load immediate 32-bit values to a register using L
Literal pools
Load addresses into registers
Load addresses to a register using ADR
Load addresses to a register using ADRL
Load addresses to a register using LDR Rd, =label
Other ways to load and store registers
Load and store multiple register instructions
Load and store multiple instructions available in
Stack implementation using LDM and STM
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Assembler User Guide
Load addresses to a register using ADRL
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| Home > Writing ARM Assembly Language > Load addresses to a register using ADRL | |||
The ADRL pseudo-instruction enables you to generate
an address, within a certain range, without performing a data load. ADRL accepts
a PC-relative expression, that is, a label with an optional offset
where the address of the label is relative to the current PC.
Note
The label used with ADRL must be within the same
code section. The assembler faults references to labels that are
out of range in the same section.
ADRL is not available in Thumb state on processors
before ARMv6T2.
The assembler converts an ADRL r pseudo-instruction
by generating:n,label
two data processing instructions that load the address, if it is in range
an error message if the address cannot be constructed in two instructions.
The available range depends on the instruction set in use:
- ARM
Any value that can be generated by two
ADDor twoSUBinstructions. That is, any value that can be produced by the addition of two values, each of which is 8 bits rotated right by any even number of bits within a 32-bit word. The range is relative to the PC.- 32-bit Thumb
±1MB to a byte, halfword, or word-aligned address.
- 16-bit Thumb
ADRLis not available.
See also| Copyright © 2007-2008, 2011-2012 ARM. All rights reserved. | ARM DUI 0379D |
| Non-Confidential | ID062912 |
 PDF version | |
| Home > Writing ARM Assembly Language > Load addresses to a register using ADRL |
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