ARM VERSION 1.2 manual LDR ARM pseudo-instruction

ARM Instruction Reference

4.9.3LDR ARM pseudo-instruction

Load a register with either:

•a 32-bit constant value

•an address.

Note

This section describes the LDR pseudo-instruction only. See ARM memory access instructions on page 4-6 for information on the LDR instruction.

Syntax

LDR{cond} register,=[expr label-expr]

where:
cond	is an optional condition code.
register	is the register to be loaded.
expr	evaluates to a numeric constant:
	•	the assembler generates a MOV or MVN instruction, if the value of expr
		is within range
	•	if the value of expr is not within range of a MOV or MVN instruction,
		the assembler places the constant in a literal pool and generates a
		program-relative LDR instruction that reads the constant from the
		literal pool.
label-expr	is a program-relative or external expression. The assembler places the
	value of label-exprin a literal pool and generates a program-relative LDR
	instruction that loads the value from the literal pool.

If label-expris an external expression, or is not contained in the current section, the assembler places a linker relocation directive in the object file. The linker generates the address at link time.

4-82 Copyright © 2000, 2001 ARM Limited. All rights reserved. ARM DUI 0068B