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| author | Thomas Preud'homme <thomas.preudhomme@arm.com> | 2016-05-10 15:15:15 +0100 |
|---|---|---|
| committer | Thomas Preud'homme <thomas.preudhomme@arm.com> | 2016-05-10 15:24:10 +0100 |
| commit | 15afaa63f39a44563e49bb3b9fb38ed43e8b48ed (patch) | |
| tree | dde74b084be0c1722355cb7e4d5e1407b5fc6e5b /bfd/elf32-arm.c | |
| parent | d942732e829030b8eab483dd48b979f8eed7c9e2 (diff) | |
| download | gdb-15afaa63f39a44563e49bb3b9fb38ed43e8b48ed.zip gdb-15afaa63f39a44563e49bb3b9fb38ed43e8b48ed.tar.gz gdb-15afaa63f39a44563e49bb3b9fb38ed43e8b48ed.tar.bz2 | |
Add support for ARMv8-M Mainline with DSP extension
2016-05-10 Thomas Preud'homme <thomas.preudhomme@arm.com>
bfd/
(elf32_arm_merge_eabi_attributes): Add merging logic for
Tag_DSP_extension.
binutils/
* readelf.c (display_arm_attribute): Add output for Tag_DSP_extension.
(arm_attr_public_tags): Define DSP_extension attribute.
gas/
* NEWS: Document ARMv8-M and ARMv8-M Security and DSP Extensions.
* config/tc-arm.c (arm_ext_dsp): New feature for Thumb DSP
instructions.
(arm_extensions): Add dsp extension for ARMv8-M Mainline.
(aeabi_set_public_attributes): Memorize the feature bits of the
architecture selected for Tag_CPU_arch. Use it to set
Tag_DSP_extension to 1 for ARMv8-M Mainline with DSP extension.
(arm_convert_symbolic_attribute): Define Tag_DSP_extension.
* testsuite/gas/arm/arch7em-bad.d: Rename to ...
* testsuite/gas/arm/arch7em-bad-1.d: This.
* testsuite/gas/arm/arch7em-bad-2.d: New file.
* testsuite/gas/arm/arch7em-bad-3.d: Likewise.
* testsuite/gas/arm/archv8m-main-dsp-1.d: Likewise.
* testsuite/gas/arm/archv8m-main-dsp-2.d: Likewise.
* testsuite/gas/arm/archv8m-main-dsp-3.d: Likewise.
* testsuite/gas/arm/archv8m-main-dsp-4.d: Likewise.
* testsuite/gas/arm/archv8m-main-dsp-5.d: Likewise.
* testsuite/gas/arm/attr-march-armv8m.main.dsp.d: Likewise.
include/
* elf/arm.h (Tag_DSP_extension): Define.
ld/
* testsuite/ld-arm/arm-elf.exp (EABI attribute merging 10 (DSP)): New
test.
* testsuite/ld-arm/attr-merge-10b-dsp.s: New file.
* testsuite/ld-arm/attr-merge-10-dsp.attr: Likewise.
Diffstat (limited to 'bfd/elf32-arm.c')
| -rw-r--r-- | bfd/elf32-arm.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/bfd/elf32-arm.c b/bfd/elf32-arm.c index d65837c..fa0d74f 100644 --- a/bfd/elf32-arm.c +++ b/bfd/elf32-arm.c @@ -12737,6 +12737,31 @@ elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd) } } break; + + case Tag_DSP_extension: + /* No need to change output value if any of: + - pre (<=) ARMv5T input architecture (do not have DSP) + - M input profile not ARMv7E-M and do not have DSP. */ + if (in_attr[Tag_CPU_arch].i <= 3 + || (in_attr[Tag_CPU_arch_profile].i == 'M' + && in_attr[Tag_CPU_arch].i != 13 + && in_attr[i].i == 0)) + ; /* Do nothing. */ + /* Output value should be 0 if DSP part of architecture, ie. + - post (>=) ARMv5te architecture output + - A, R or S profile output or ARMv7E-M output architecture. */ + else if (out_attr[Tag_CPU_arch].i >= 4 + && (out_attr[Tag_CPU_arch_profile].i == 'A' + || out_attr[Tag_CPU_arch_profile].i == 'R' + || out_attr[Tag_CPU_arch_profile].i == 'S' + || out_attr[Tag_CPU_arch].i == 13)) + out_attr[i].i = 0; + /* Otherwise, DSP instructions are added and not part of output + architecture. */ + else + out_attr[i].i = 1; + break; + case Tag_FP_arch: { /* Tag_ABI_HardFP_use is handled along with Tag_FP_arch since |