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| author | Matthew Wahab <matthew.wahab@arm.com> | 2015-12-10 14:05:01 +0000 |
|---|---|---|
| committer | Matthew Wahab <matthew.wahab@arm.com> | 2015-12-10 14:10:15 +0000 |
| commit | c8a6db6fa0b06b978e5b63593a6b0cb3300ad259 (patch) | |
| tree | f20dce99ea7b13923aa1e8b7f143aaef27d70126 /gas | |
| parent | af117b3cf1877da805d081b93f606f3dd8153502 (diff) | |
| download | gdb-c8a6db6fa0b06b978e5b63593a6b0cb3300ad259.zip gdb-c8a6db6fa0b06b978e5b63593a6b0cb3300ad259.tar.gz gdb-c8a6db6fa0b06b978e5b63593a6b0cb3300ad259.tar.bz2 | |
[AArch64][PATCH 1/2] Add support for RAS instruction ESB.
The ARMv8.2 RAS extension adds a new barrier instruction ESB as an alias
and the preferred form of HINT 16.
This patch adds an architectural feature flag for the RAS extension and
includes it in the features selected enabled by -march=armv8.2-a. It
also adds the ESB instruction, making it available whenever the RAS
feature is enabled.
Because ESB is the preferred form and because the target architecture
isn't available to the disassembler, HINT 16 will be disassembled as ESB
even when the target has no support for the RAS extension.
gas/testsuite/
2015-12-10 Matthew Wahab <matthew.wahab@arm.com>
* gas/aarch64/system-2.d: New.
* gas/aarch64/system-2.s: New.
* gas/aarch64/system.d: Adjust expected output for HINT 16.
include/opcode/
2015-12-10 Matthew Wahab <matthew.wahab@arm.com>
* aarch64.h (AARCH64_FEATURE_RAS): New.
(AARCH64_ARCH_V8_2): Add AARCH64_FEATURE_RAS.
opcodes/
2015-12-10 Matthew Wahab <matthew.wahab@arm.com>
* aarch64-asm-2.c: Regenerate.
* aarch64-dis-2.c: Regenerate.
* aarch64-tbl.h (aarch64_feature_ras): New.
(RAS): New.
(aarch64_opcode_table): Add "esb".
Change-Id: Id4713917da15cca3b977284f43febd1c9b3d9faf
Diffstat (limited to 'gas')
| -rw-r--r-- | gas/testsuite/ChangeLog | 6 | ||||
| -rw-r--r-- | gas/testsuite/gas/aarch64/system-2.d | 10 | ||||
| -rw-r--r-- | gas/testsuite/gas/aarch64/system-2.s | 6 | ||||
| -rw-r--r-- | gas/testsuite/gas/aarch64/system.d | 2 |
4 files changed, 23 insertions, 1 deletions
diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog index d0f5dea..7fd79a8 100644 --- a/gas/testsuite/ChangeLog +++ b/gas/testsuite/ChangeLog @@ -1,3 +1,9 @@ +2015-12-10 Matthew Wahab <matthew.wahab@arm.com> + + * gas/aarch64/system-2.d: New. + * gas/aarch64/system-2.s: New. + * gas/aarch64/system.d: Adjust expected output for HINT 16. + 2015-12-09 H.J. Lu <hongjiu.lu@intel.com> * gas/i386/i386.exp: Run ospke and x86-64-ospke. diff --git a/gas/testsuite/gas/aarch64/system-2.d b/gas/testsuite/gas/aarch64/system-2.d new file mode 100644 index 0000000..9b379cf --- /dev/null +++ b/gas/testsuite/gas/aarch64/system-2.d @@ -0,0 +1,10 @@ +#as: -march=armv8.2-a +#objdump: -dr + +.*: file format .* + +Disassembly of section \.text: + +0000000000000000 <.*>: + 0: d503221f esb + 4: d503221f esb diff --git a/gas/testsuite/gas/aarch64/system-2.s b/gas/testsuite/gas/aarch64/system-2.s new file mode 100644 index 0000000..9b7f216 --- /dev/null +++ b/gas/testsuite/gas/aarch64/system-2.s @@ -0,0 +1,6 @@ + /* ARMv8.1 System instructions. */ + .text + + /* RAS Extension. */ + esb + hint #0x10 diff --git a/gas/testsuite/gas/aarch64/system.d b/gas/testsuite/gas/aarch64/system.d index 4fad895..d4dcf86 100644 --- a/gas/testsuite/gas/aarch64/system.d +++ b/gas/testsuite/gas/aarch64/system.d @@ -28,7 +28,7 @@ Disassembly of section \.text: 50: d50321bf hint #0xd 54: d50321df hint #0xe 58: d50321ff hint #0xf - 5c: d503221f hint #0x10 + 5c: d503221f (hint #0x10|esb) 60: d503223f hint #0x11 64: d503225f hint #0x12 68: d503227f hint #0x13 |