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Re: [PATCH/RFC] ARM -- Implement ATPCS stack alignment rules


On Mon, Nov 04, 2002 at 05:04:03PM +0000, Richard Earnshaw wrote:

 > We're getting there.  However, as things stand this is incorrect for 
 > Thumb.  arm_compute_saved_reg_mask can't be used for a thumb function[*], 
 > so either we need to handle Thumb specifically in arm_get_frame_size or we 
 > need a thumb_get_frame_size function to handle that case.

Ok, I'm currently regtesting the following... please make sure I
understood the rules right in thumb_get_frame_size()...

	* config/arm/arm-protos.h (arm_get_frame_size)
	(thumb_get_frame_size): New prototypes.
	* config/arm/arm.c (arm_get_frame_size)
	(thumb_get_frame_size): New functions.
	(use_return_insn, arm_output_epilogue, arm_output_function_epilogue)
	(arm_compute_initial_elimination_offset, arm_expand_prologue): Use
	arm_get_frame_size.
	(thumb_expand_prologue, thumb_expand_epilogue): Use
	thumb_get_frame_size.
	* config/arm/arm.h (PREFERRED_STACK_BOUNDARY): Define.
	(THUMB_INITIAL_ELIMINATION_OFFSET): Use thumb_get_frame_size.

-- 
        -- Jason R. Thorpe <thorpej@wasabisystems.com>

Attachment: arm-stack-patch
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