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aarch64: Add FEAT_SPECRES2 support

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This patch add supports for FEAT_SPECRES2 "Enhanced speculation
restriction instructions" adding the "cosp" instruction.

This is mandatory v8.9-a/v9.4-a and optional v8.0-a+/v9.0-a+.  It is
enabled by the +predres2 march flag.
This commit is contained in:
Andrea Corallo
2023-09-06 15:52:45 +01:00
parent 25bb95ea6d
commit 88b5a8ae13
11 changed files with 2113 additions and 2076 deletions
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include/opcode/aarch64.h
+4 -1
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@@ -197,6 +197,8 @@ enum aarch64_feature_bit {
AARCH64_FEATURE_S2POE,
/* Extension to Translation Control Registers. */
AARCH64_FEATURE_TCR2,
/* Speculation Prediction Restriction instructions. */
AARCH64_FEATURE_PREDRES2,
AARCH64_NUM_FEATURES
};
@@ -276,7 +278,8 @@ enum aarch64_feature_bit {
#define AARCH64_ARCH_V9_1A_FEATURES(X) AARCH64_ARCH_V8_6A_FEATURES (X)
#define AARCH64_ARCH_V9_2A_FEATURES(X) AARCH64_ARCH_V8_7A_FEATURES (X)
#define AARCH64_ARCH_V9_3A_FEATURES(X) AARCH64_ARCH_V8_8A_FEATURES (X)
#define AARCH64_ARCH_V9_4A_FEATURES(X) AARCH64_ARCH_V8_9A_FEATURES (X)
#define AARCH64_ARCH_V9_4A_FEATURES(X) (AARCH64_ARCH_V8_9A_FEATURES (X) \
| AARCH64_FEATBIT (X, PREDRES2))
/* Architectures are the sum of the base and extensions. */
#define AARCH64_ARCH_V8A(X) (AARCH64_FEATBIT (X, V8) \