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PATCH [1/10] arm: add 'bti' instruction for Armv8.1-M pacbti extension

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gas/
2021-06-11  Andrea Corallo  <andrea.corallo@arm.com>

	* config/tc-arm.c (insns): Add 'bti' insn.
	* testsuite/gas/arm/armv8_1-m-pacbti.d: New file.
	* testsuite/gas/arm/armv8_1-m-pacbti.s: Likewise.

opcodes/
2021-06-11  Andrea Corallo  <andrea.corallo@arm.com>

	* arm-dis.c (thumb32_opcodes): Add bti instruction.
This commit is contained in:
Andrea Corallo 2021-05-14 16:19:39 +02:00
parent 730afdd139
commit 3751264cdd
4 changed files with 21 additions and 0 deletions
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1
gas/config/tc-arm.c
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@ -26305,6 +26305,7 @@ static const struct asm_opcode insns[] =
/* Armv8.1-M Mainline instructions. */
#undef THUMB_VARIANT
#define THUMB_VARIANT & arm_ext_v8_1m_main
ToU("bti", f3af800f, 0, (), noargs),
toU("cinc", _cinc, 3, (RRnpcsp, RR_ZR, COND), t_cond),
toU("cinv", _cinv, 3, (RRnpcsp, RR_ZR, COND), t_cond),
toU("cneg", _cneg, 3, (RRnpcsp, RR_ZR, COND), t_cond),

10
gas/testsuite/gas/arm/armv8_1-m-pacbti.d Normal file
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@ -0,0 +1,10 @@
#name: Valid Armv8.1-M pointer authentication and branch target identification extention
#source: armv8_1-m-pacbti.s
#as: -march=armv8.1-m.main
#objdump: -dr --prefix-addresses --show-raw-insn
.*: +file format .*arm.*
Disassembly of section .text:
0[0-9a-f]+ <[^>]+> f3af 800f bti
#...

5
gas/testsuite/gas/arm/armv8_1-m-pacbti.s Normal file
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@ -0,0 +1,5 @@
.syntax unified
.text
.thumb
.Lstart:
bti

5
opcodes/arm-dis.c
View File

@ -4652,6 +4652,11 @@ static const struct opcode16 thumb_opcodes[] =
makes heavy use of special-case bit patterns. */
static const struct opcode32 thumb32_opcodes[] =
{
/* Arm v8.1-M Mainline Pointer Authentication and Branch Target
Identification Extension. */
{ARM_FEATURE_CORE_HIGH (ARM_EXT2_V8_1M_MAIN),
0xf3af800f, 0xffffffff, "bti"},
/* Armv8.1-M Mainline and Armv8.1-M Mainline Security Extensions
instructions. */
{ARM_FEATURE_CORE_HIGH (ARM_EXT2_V8_1M_MAIN),