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[AArch64][Patch 1/5] Support the ARMv8.2 Statistical Profiling Extension. 

The Statistical Profile extension included in the ARMv8.2 architecture
adds a number of system registers and a new instruction. This patch set
adds support for the extension to binutils, enabled when
-march=armv8.2-a+profile is given.

The patches in this series:
- Add the new command line option and feature flags.
- Add the new system registers.
- Adjust the maximum number of aliases permitted for an instruction.
- Add support for HINT aliases which take operands.
- Add the new instruction, an alias of the HINT instruction.

This patch adds the option "profile" to the permitted architecture
extensions, disabling it by default.

gas/
2015-12-11  Matthew Wahab  <matthew.wahab@arm.com>

	* config/tc-aarch64.c (aarch64_features): Add "profile".
	* doc/c-aarch64.texi (AArch64 Extensions): Add "profile".

include/opcode/
2015-12-11  Matthew Wahab  <matthew.wahab@arm.com>

	* aarch64.h (AARCH64_FEATURE_PROFILE): New.

Change-Id: If9bb4a9b69a264180f96f8ffaf10b15ced273699
This commit is contained in:
Matthew Wahab 2015-12-11 09:30:26 +00:00
parent 9343aa2bf0
commit 73af8ed6b1
5 changed files with 13 additions and 0 deletions
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5
gas/ChangeLog
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@ -1,3 +1,8 @@
2015-12-11 Matthew Wahab <matthew.wahab@arm.com>
* config/tc-aarch64.c (aarch64_features): Add "profile".
* doc/c-aarch64.texi (AArch64 Extensions): Add "profile".
2015-12-10 Matthew Wahab <matthew.wahab@arm.com>
* config/tc-aarch64.c (parse_sys_ins_reg): Add check of

1
gas/config/tc-aarch64.c
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@ -7744,6 +7744,7 @@ static const struct aarch64_option_cpu_value_table aarch64_features[] = {
| AARCH64_FEATURE_RDMA, 0)},
{"fp16", AARCH64_FEATURE (AARCH64_FEATURE_F16
| AARCH64_FEATURE_FP, 0)},
{"profile", AARCH64_FEATURE (AARCH64_FEATURE_PROFILE, 0)},
{NULL, AARCH64_ARCH_NONE}
};

2
gas/doc/c-aarch64.texi
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@ -145,6 +145,8 @@ automatically cause those extensions to be disabled.
@item @code{fp16} @tab ARMv8.2-A @tab ARMv8.2-A or later
@tab Enable ARMv8.2 16-bit floating-point support. This implies
@code{fp}.
@item @code{profile} @tab ARMv8.2-A @tab No
@tab Enable statistical profiling extensions.
@end multitable
@node AArch64 Syntax

4
include/opcode/ChangeLog
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@ -1,3 +1,7 @@
2015-12-11 Matthew Wahab <matthew.wahab@arm.com>
* aarch64.h (AARCH64_FEATURE_PROFILE): New.
2015-12-10 Matthew Wahab <matthew.wahab@arm.com>
* aarch64.h (aarch64_sys_ins_reg_supported_p): Declare.

1
include/opcode/aarch64.h
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@ -50,6 +50,7 @@ typedef uint32_t aarch64_insn;
#define AARCH64_FEATURE_V8_1 0x01000000 /* v8.1 features. */
#define AARCH64_FEATURE_F16 0x02000000 /* v8.2 FP16 instructions. */
#define AARCH64_FEATURE_RAS 0x04000000 /* RAS Extensions. */
#define AARCH64_FEATURE_PROFILE 0x08000000 /* Statistical Profiling. */
/* Architectures are the sum of the base and extensions. */
#define AARCH64_ARCH_V8 AARCH64_FEATURE (AARCH64_FEATURE_V8, \