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literal pool in assembler
The instruction field is the real meat of your program: it is any valid ARM assembly . .ltorg. Insert the literal pool of constants at this point in the program.
1 Nov 2013 [LLVMdev] Implementing the ldr pseudo instruction in ARM that without the .ltorg directive the constant pool >>>>> would go at the end of the
.code [16|32]: This directive selects the instruction set being generated. .ltorg: This directive causes the current contents of the literal pool to be dumped into
For the ARM however if the first argument is zero (ie no alignment is needed) the assembler This directive selects the instruction set being generated. The .ltorg directive will only affect the literal pool of the current section and sub-section.
How to use the .ltorg directive properly to extend the range of LDR Literals An alternative is to use the movw and movt , if you have a newer ARM cpu. See ARM How does the LDR instruction load constants into registers?
Use the LTORG instruction so that the assembler can collect and assemble literals into a literal pool. A literal pool contains the literals you specify in a source
Use LTORG to ensure that literal pools are assembled within range of the LDR , LDFD , and LDFS pseudo-instructions. Refer to LDR ARM pseudo-instruction
The LTORG directive now restores Thumb mode correctly after inserting a literal pool. [EW23489]. In EWARM 6.50.2: The instructions MCR and MRC now allow
Non-Confidential PDF versionARM DUI0379H ARM® Compiler v5.06 for µVision® Syntax LTORG Usage The assembler assembles the current literal pool at the end of be out of range of some LDR, VLDR, and WLDR pseudo-instructions.
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