From ff6054520cc86ac2f34c21bcc2e44ede50b56cdc Mon Sep 17 00:00:00 2001 From: Sudakshina Das Date: Wed, 26 Sep 2018 11:00:49 +0100 Subject: [PATCH, BINUTILS, AARCH64, 7/9] Add BTI instruction 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/docs/ddi0596/a/a64-base-instructions-alphabetic-order/bti-branch-target-identification) The Branch Target Identification instructions (BTI) are allocated to existing HINT space, using HINT numbers 32, 34, 36, 38, such that bits[7:6] of the instruction identify the compatibility of the BTI instruction to different branches. BTI {} where one of the following, specifying which type of indirection is allowed: j : Can be a target of any BR Xn isntruction. c : Can be a target of any BLR Xn and BR {X16|X17}. jc: Can be a target of any free branch. A BTI instruction without any is the strictest of all and can not be a target of nay free branch. *** include/ChangeLog *** 2018-10-09 Sudakshina Das * opcode/aarch64.h (AARCH64_FEATURE_BTI): New. (AARCH64_ARCH_V8_5): Add AARCH64_FEATURE_BTI by default. (aarch64_opnd): Add AARCH64_OPND_BTI_TARGET. (HINT_OPD_CSYNC, HINT_OPD_C, HINT_OPD_J): New macros to define HINT #imm values. (HINT_OPD_JC, HINT_OPD_NULL): Likewise. *** opcodes/ChangeLog *** 2018-10-09 Sudakshina Das * aarch64-opc.h (HINT_OPD_NOPRINT, HINT_ENCODE): New. (HINT_FLAG, HINT_VALUE): New macros to encode NO_PRINT flag with the hint immediate. * aarch64-opc.c (aarch64_hint_options): New entries for c, j, jc and default (with HINT_OPD_F_NOPRINT flag) for BTI. (aarch64_print_operand): Add case for AARCH64_OPND_BTI_TARGET while checking for HINT_OPD_F_NOPRINT flag. * aarch64-dis.c (aarch64_ext_hint): Use new HINT_VALUE to extract value. * aarch64-tbl.h (aarch64_feature_bti, BTI, BTI_INSN): New. (aarch64_opcode_table): Add entry for BTI. (AARCH64_OPERANDS): Add new description for BTI targets. * aarch64-asm-2.c: Regenerate. * aarch64-dis-2.c: Regenerate. * aarch64-opc-2.c: Regenerate. *** gas/ChangeLog *** 2018-10-09 Sudakshina Das * config/tc-aarch64.c (parse_bti_operand): New. (process_omitted_operand): Add case for AARCH64_OPND_BTI_TARGET. (parse_operands): Likewise. * testsuite/gas/aarch64/system.d: Update for BTI. * testsuite/gas/aarch64/bti.s: New. * testsuite/gas/aarch64/bti.d: New. * testsuite/gas/aarch64/illegal-bti.d: New. * testsuite/gas/aarch64/illegal-bti.l: New. --- opcodes/aarch64-dis.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'opcodes/aarch64-dis.c') diff --git a/opcodes/aarch64-dis.c b/opcodes/aarch64-dis.c index 4e44f52..03851ca 100644 --- a/opcodes/aarch64-dis.c +++ b/opcodes/aarch64-dis.c @@ -1312,7 +1312,7 @@ aarch64_ext_hint (const aarch64_operand *self ATTRIBUTE_UNUSED, for (i = 0; aarch64_hint_options[i].name != NULL; i++) { - if (hint_number == aarch64_hint_options[i].value) + if (hint_number == HINT_VAL (aarch64_hint_options[i].value)) { info->hint_option = &(aarch64_hint_options[i]); return TRUE; -- cgit v1.1