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authorAlex Coplan <alex.coplan@arm.com>2020-09-08 14:13:45 +0100
committerAlex Coplan <alex.coplan@arm.com>2020-09-08 14:14:11 +0100
commit95830c988a648e55042f4999f1f6a06e0879e533 (patch)
treec2af09d241b50395a615952b976cf2e95029407c /bfd/archures.c
parent7ba115508aa02ffbb01a09613b5dffdd0c6563e3 (diff)
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aarch64: Add base support for Armv8-R
This patch adds the basic infrastructure needed to support Armv8-R in AArch64 binutils: new command-line flags, new feature bits, a new BFD architecture, and support for differentiating between architecture variants in the disassembler. The new command-line options added by this patch are -march=armv8-r in GAS and -m aarch64:armv8-r in objdump. The disassembler support is necessary since Armv8-R AArch64 introduces a system register (VSCTLR_EL2) which shares an encoding with a different system register (TTBR0_EL2) in Armv8-A. This also allows us to use the correct preferred disassembly for the new DFB alias introduced in Armv8-R. bfd/ChangeLog: 2020-09-08 Alex Coplan <alex.coplan@arm.com> * archures.c (bfd_mach_aarch64_8R): New. * bfd-in2.h: Regenerate. * cpu-aarch64.c (bfd_aarch64_arch_v8_r): New. (bfd_aarch64_arch_ilp32): Update tail pointer. gas/ChangeLog: 2020-09-08 Alex Coplan <alex.coplan@arm.com> * config/tc-aarch64.c (aarch64_archs): Add armv8-r. * doc/c-aarch64.texi: Document -march=armv8-r. include/ChangeLog: 2020-09-08 Alex Coplan <alex.coplan@arm.com> * opcode/aarch64.h (AARCH64_FEATURE_V8_A): New. (AARCH64_FEATURE_V8_R): New. (AARCH64_ARCH_V8): Include new A-profile feature bit. (AARCH64_ARCH_V8_R): New. opcodes/ChangeLog: 2020-09-08 Alex Coplan <alex.coplan@arm.com> * aarch64-dis.c (arch_variant): New. (determine_disassembling_preference): Disassemble according to arch variant. (select_aarch64_variant): New. (print_insn_aarch64): Set feature set.
Diffstat (limited to 'bfd/archures.c')
-rw-r--r--bfd/archures.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/bfd/archures.c b/bfd/archures.c
index 969fa20..5069864 100644
--- a/bfd/archures.c
+++ b/bfd/archures.c
@@ -530,6 +530,7 @@ DESCRIPTION
.#define bfd_mach_tilegx32 2
. bfd_arch_aarch64, {* AArch64. *}
.#define bfd_mach_aarch64 0
+.#define bfd_mach_aarch64_8R 1
.#define bfd_mach_aarch64_ilp32 32
. bfd_arch_nios2, {* Nios II. *}
.#define bfd_mach_nios2 0