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aarch64: add STEP2 feature and its associated registers

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AArch64 defines new registers for the feature step2 (Enhanced Software Step
Extension). step2 is an Armv9.5-A feature.

This patch also adds relevant tests. Regression tested on aarch64-none-elf,
and no regression found.
This commit is contained in:
Matthieu Longo
2024-07-03 18:36:26 +01:00
parent 27e411ef5d
commit f83675969b
5 changed files with 13 additions and 0 deletions
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3
include/opcode/aarch64.h
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@@ -234,6 +234,8 @@ enum aarch64_feature_bit {
AARCH64_FEATURE_SVE2p1,
/* RCPC3 instructions. */
AARCH64_FEATURE_RCPC3,
/* Enhanced Software Step Extension. */
AARCH64_FEATURE_STEP2,
/* Checked Pointer Arithmetic instructions. */
AARCH64_FEATURE_CPA,
/* FAMINMAX instructions. */
@@ -373,6 +375,7 @@ enum aarch64_feature_bit {
| AARCH64_FEATBIT (X, FAMINMAX)\
| AARCH64_FEATBIT (X, E3DSE) \
| AARCH64_FEATBIT (X, SPMU2) \
| AARCH64_FEATBIT (X, STEP2) \
)
/* Architectures are the sum of the base and extensions. */