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aarch64: Add THE system register support

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Add Binutils support for system registers associated with the
Translation Hardening Extension (THE).

In doing so, we also add core feature support for THE, enabling its
associated feature flag and implementing the necessary
feature-checking machinery.

Regression tested on aarch64-linux-gnu, no regressions.

gas/ChangeLog:

	* config/tc-aarch64.c (aarch64_features): Add "+the" feature modifier.
	* doc/c-aarch64.texi (AArch64 Extensions): Update
	documentation for `the' option.
	* testsuite/gas/aarch64/sysreg-8.s: Add tests for `the'
	associated system registers.
	* testsuite/gas/aarch64/sysreg-8.d: Likewise.

include/ChangeLog:

	* opcode/aarch64.h (enum aarch64_feature_bit): Add
	AARCH64_FEATURE_THE.

opcode/ChangeLog:

	* aarch64-opc.c (aarch64_sys_ins_reg_supported_p): Add `the'
	system register check support.
	* aarch64-sys-regs.def: Add `rcwmask_el1' and `rcwsmask_el1'
	* aarch64-tbl.h: Define `THE' preprocessor macro.
This commit is contained in:
Victor Do Nascimento
2023-11-01 13:44:45 +00:00
parent 8c3273ee07
commit 9203a155ee
8 changed files with 25 additions and 0 deletions
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2
include/opcode/aarch64.h
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@@ -165,6 +165,8 @@ enum aarch64_feature_bit {
AARCH64_FEATURE_GCS,
/* SME2. */
AARCH64_FEATURE_SME2,
/* Translation Hardening Extension. */
AARCH64_FEATURE_THE,
AARCH64_NUM_FEATURES
};