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[Patch, ARM]Update the usages of Tag_ABI_HardFP_use per the latest EABI

From: "Terry Guo" <terry dot guo at arm dot com>
To: <binutils at sourceware dot org>
Cc: "Richard Earnshaw" <Richard dot Earnshaw at arm dot com>
Date: Wed, 28 Jan 2015 15:38:55 +0800
Subject: [Patch, ARM]Update the usages of Tag_ABI_HardFP_use per the latest EABI
Authentication-results: sourceware.org; auth=none

Hi there,

According to the latest EABI at
http://infocenter.arm.com/help/topic/com.arm.doc.ihi0045d/IHI0045D_ABI_adden
da.pdf, the new definition to Tag_ABI_HardFP_use is as below:

Tag_ABI_HardFP_use, (=27), uleb128
0 The user intended that FP use should be implied by Tag_FP_arch
1 The user intended this code to execute on the single-precision variant
 derived from Tag_FP_arch
2 Reserved
3 The user intended that FP use should be implied by Tag_FP_arch
 (Note: This is a deprecated duplicate of the default encoded by 0)
 
This patch intends to update Binutils to follow above definition. A big
difference is there will be no "Tag_ABI_HardFP_use: SP and DP" when
"arm-none-eabi-readelf -A a.axf"

Tested with Binutils regression test. No regression. Is it OK?

BR,
Terry

2015-01-28  Terry Guo  <terry.guo@arm.com>

	* bfd/elf32-arm.c (elf32_arm_merge_eabi_attributes): Update how we
merge Tag_ABI_HardFP_use.

2015-01-28  Terry Guo  <terry.guo@arm.com>

	* binutils/readelf.c (arm_attr_tag_ABI_HardFP_use): Update how we
display it.

2015-01-28  Terry Guo  <terry.guo@arm.com>

	* ld/testsuite/ld-arm/attr-merge-3.attr: Remove Tag_ABI_HardFP_use.
	* ld/testsuite/ld-arm/attr-merge-vfp-10.d: Likewise.
	* ld/testsuite/ld-arm/attr-merge-vfp-10r.d: Likewise.
	* ld/testsuite/ld-arm/attr-merge-vfp-12.d: Likewise.
	* ld/testsuite/ld-arm/attr-merge-vfp-12r.d: Likewise.
	* ld/testsuite/ld-arm/attr-merge-vfp-13.d: Likewise.
	* ld/testsuite/ld-arm/attr-merge-vfp-13r.d: Likewise.
	* ld/testsuite/ld-arm/attr-merge-vfp-14.d: Likewise.
	* ld/testsuite/ld-arm/attr-merge-vfp-14r.d: Likewise.
	* ld/testsuite/ld-arm/attr-merge-vfp-6.d: Likewise.
	* ld/testsuite/ld-arm/attr-merge-vfp-6r.d: Likewise.
	* ld/testsuite/ld-arm/attr-merge-vfp-7.d: Likewise.
	* ld/testsuite/ld-arm/attr-merge-vfp-7r.d: Likewise.
	* ld/testsuite/ld-arm/attr-merge-vfp-8.d: Likewise.
	* ld/testsuite/ld-arm/attr-merge-vfp-8r.d: Likewise.

Attachment: update-Tag_ABI_HardFP_use-v2.txt
Description: Text document

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