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| author | Sudakshina Das <sudi.das@arm.com> | 2018-10-05 10:51:22 +0100 |
|---|---|---|
| committer | Richard Earnshaw <Richard.Earnshaw@arm.com> | 2018-10-05 11:31:21 +0100 |
| commit | dad0c3bfb5e32ff3f2a03830dc189fe207c7ae00 (patch) | |
| tree | fde5239ba63c1a055cc6a99b0a65d1a411d72ebf /gas/config | |
| parent | 7fadb25d6faf2665305016ceb4aeaeeb86015569 (diff) | |
| download | gdb-dad0c3bfb5e32ff3f2a03830dc189fe207c7ae00.zip gdb-dad0c3bfb5e32ff3f2a03830dc189fe207c7ae00.tar.gz gdb-dad0c3bfb5e32ff3f2a03830dc189fe207c7ae00.tar.bz2 | |
[Arm, 3/3] Add Execution and Data Prediction instructions for AArch32
This patch is part of the patch series to add support for ARMv8.5-A
extensions.
(https://developer.arm.com/products/architecture/cpu-architecture/a-profile/exploration-tools)
This patch adds the Execution and Data Prediction Restriction
instructions (that is, cfprctx, dvprxtc, cpprctx). These are all
aliases to MCR and are disassembled as such.
This instruction is retrospectively made optional for all versions of
the architecture from ARMv8.0 to ARMv8.4 and is mandatory from
ARMv8.5. Hence adding a new +predres for older versions of the
architecture.
*** include/ChangeLog ***
2018-10-05 Sudakshina Das <sudi.das@arm.com>
* opcode/arm.h (ARM_EXT2_PREDRES): New.
(ARM_ARCH_V8_5A): Add ARM_EXT2_PREDRES by default.
*** gas/ChangeLog ***
2018-10-05 Sudakshina Das <sudi.das@arm.com>
* config/tc-arm.c (arm_ext_predres): New.
(insns): Add new cfprctx, dvprctx and cpprctx instructions.
(arm_extensions): Add "predres".
* doc/c-arm.texi: Document the above.
* testsuite/gas/arm/predres-bad.d: New test.
* testsuite/gas/arm/predres-bad.l: New test.
* testsuite/gas/arm/predres.s: New test.
* testsuite/gas/arm/predres1.d: New test.
* testsuite/gas/arm/predres2.d: New test.
Diffstat (limited to 'gas/config')
| -rw-r--r-- | gas/config/tc-arm.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c index 1ecaa45..80fb0c3 100644 --- a/gas/config/tc-arm.c +++ b/gas/config/tc-arm.c @@ -258,6 +258,8 @@ static const arm_feature_set arm_ext_v8_3 = ARM_FEATURE_CORE_HIGH (ARM_EXT2_V8_3A); static const arm_feature_set arm_ext_sb = ARM_FEATURE_CORE_HIGH (ARM_EXT2_SB); +static const arm_feature_set arm_ext_predres = + ARM_FEATURE_CORE_HIGH (ARM_EXT2_PREDRES); static const arm_feature_set arm_arch_any = ARM_ANY; #ifdef OBJ_ELF @@ -21525,6 +21527,14 @@ static const struct asm_opcode insns[] = #define THUMB_VARIANT & arm_ext_sb TUF("sb", 57ff070, f3bf8f70, 0, (), noargs, noargs), +#undef ARM_VARIANT +#define ARM_VARIANT & arm_ext_predres +#undef THUMB_VARIANT +#define THUMB_VARIANT & arm_ext_predres + CE("cfprctx", e070f93, 1, (RRnpc), rd), + CE("dvprctx", e070fb3, 1, (RRnpc), rd), + CE("cpprctx", e070ff3, 1, (RRnpc), rd), + /* ARMv8-M instructions. */ #undef ARM_VARIANT #define ARM_VARIANT NULL @@ -26421,6 +26431,9 @@ static const struct arm_option_extension_value_table arm_extensions[] = ARM_EXT_OPT ("pan", ARM_FEATURE_CORE_HIGH (ARM_EXT2_PAN), ARM_FEATURE (ARM_EXT_V8, ARM_EXT2_PAN, 0), ARM_FEATURE_CORE_HIGH (ARM_EXT2_V8A)), + ARM_EXT_OPT ("predres", ARM_FEATURE_CORE_HIGH (ARM_EXT2_PREDRES), + ARM_FEATURE_CORE_HIGH (ARM_EXT2_PREDRES), + ARM_ARCH_V8A), ARM_EXT_OPT ("ras", ARM_FEATURE_CORE_HIGH (ARM_EXT2_RAS), ARM_FEATURE (ARM_EXT_V8, ARM_EXT2_RAS, 0), ARM_FEATURE_CORE_HIGH (ARM_EXT2_V8A)), |