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Add assembler support for ARMv8-M Baseline

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2015-12-24  Thomas Preud'homme  <thomas.preudhomme@arm.com>

bfd/
    (tag_cpu_arch_combine): Adjust comment in v4t_plus_v6_m with regards
    to merging with ARMv8-M Baseline.

binutils/
    * readelf.c (arm_attr_tag_CPU_arch): Add ARMv8-M Baseline Tag_CPU_arch
    value.

gas/
    * config/tc-arm.c (arm_ext_v6t2_v8m): New feature for instructions
    shared between ARMv6T2 and ARMv8-M.
    (move_or_literal_pool): Check mov.w/mvn and movw availability against
    arm_ext_v6t2 and arm_ext_v6t2_v8m respectively instead of checking
    arm_arch_t2.
    (do_t_branch): Error out for wide conditional branch instructions if
    targetting ARMv8-M Baseline.
    (non_v6t2_wide_only_insn): Add the logic for new wide-only instructions
    in ARMv8-M Baseline.
    (wide_insn_ok): New function.
    (md_assemble): Use wide_insn_ok instead of non_v6t2_wide_only_insn and
    adapt error message for unsupported wide instruction to ARMv8-M
    Baseline.
    (insns): Reorganize instructions shared by ARMv8-M Baseline and
    ARMv6t2 architecture.
    (arm_cpus): Set feature bit ARM_EXT2_V6T2_V8M for marvell-pj4 and
    marvell-whitney cores.
    (arm_archs): Define armv8-m.base architecture.
    (cpu_arch_ver): Define ARM_ARCH_V8M_BASE architecture version.
    (aeabi_set_public_attributes): Add logic to set Tag_CPU_arch to 17 for
    ARMv8-M Mainline.  Set Tag_DIV_use for ARMv8-M Baseline as well.

gas/testsuite/
    * gas/arm/archv8m-base.d: New file.
    * gas/arm/attr-march-armv8m.base.d: Likewise.
    * gas/arm/armv8m.base-idiv.d: Likewise.
    * gas/arm/any-armv8m.d: Adapt to deal with ARMv8-M Baseline.

include/elf/
    * arm.h (TAG_CPU_ARCH_V8M_BASE): Declare.

include/opcode/
    * arm.h (ARM_EXT2_V6T2_V8M): New extension bit.
    (ARM_AEXT2_V8A): New architecture extension bitfield.
    (ARM_AEXT2_V8_1A): Use ARM_AEXT2_V8A instead of ARM_EXT2_ATOMICS.
    (ARM_AEXT_V8M_BASE): New architecture extension bitfield.
    (ARM_AEXT2_V8M): Add extension bit ARM_EXT2_V6T2_V8M.
    (ARM_ARCH_V6T2): Use ARM_EXT2_V6T2_V8M for the second extension
    bitfield.
    (ARM_ARCH_V6KT2): Likewise.
    (ARM_ARCH_V6ZT2): Likewise.
    (ARM_ARCH_V6KZT2): Likewise.
    (ARM_ARCH_V7): Likewise.
    (ARM_ARCH_V7A): Likewise.
    (ARM_ARCH_V7VE): Likewise.
    (ARM_ARCH_V7R): Likewise.
    (ARM_ARCH_V7M): Likewise.
    (ARM_ARCH_V7EM): Likewise.
    (ARM_ARCH_V8A): Likewise.
    (ARM_ARCH_V8M_BASE): New architecture bitfield.
    (ARM_ARCH_THUMB2): Include instructions shared by ARMv6t2 and ARMv8-M.
    (ARM_ARCH_V7A_SEC): Use ARM_EXT2_V6T2_V8M for the second extension
    bitfield and reindent.
    (ARM_ARCH_V7A_MP_SEC): Likewise.
    (ARM_ARCH_V7R_IDIV): Likewise.
    (ARM_ARCH_V8A_FP): Use ARM_AEXT2_V8A instead of ARM_EXT2_ATOMICS.
    (ARM_ARCH_V8A_SIMD): Likewise.
    (ARM_ARCH_V8A_CRYPTOV1): Likewise.

opcodes/
    * arm-dis.c (arm_opcodes): Guard movw, movt cbz, cbnz, clrex, ldrex,
    ldrexb, ldrexh, strex, strexb, strexh shared by ARMv6T2 and ARMv8-M by
    ARM_EXT2_V6T2_V8M instead of ARM_EXT_V6T2.
This commit is contained in:
Thomas Preud'homme
2015-12-24 17:26:08 +08:00
parent 4ed7ed8db2
commit ff8646eef8
17 changed files with 290 additions and 56 deletions
Download Patch File Download Diff File Expand all files Collapse all files

49
include/opcode/arm.h
View File

@ -60,6 +60,7 @@
#define ARM_EXT2_V8_2A 0x00000002 /* ARM V8.2A. */
#define ARM_EXT2_V8M 0x00000004 /* ARM V8M. */
#define ARM_EXT2_ATOMICS 0x00000008 /* ARMv8 atomics. */
#define ARM_EXT2_V6T2_V8M 0x00000010 /* V8M Baseline from V6T2. */
/* Co-processor space extensions. */
#define ARM_CEXT_XSCALE 0x00000001 /* Allow MIA etc. */
@ -142,10 +143,12 @@
#define ARM_AEXT_V8A \
(ARM_AEXT_V7A | ARM_EXT_MP | ARM_EXT_SEC | ARM_EXT_DIV | ARM_EXT_ADIV \
| ARM_EXT_VIRT | ARM_EXT_V8)
#define ARM_AEXT2_V8_1A (ARM_EXT2_ATOMICS | ARM_EXT2_PAN)
#define ARM_AEXT2_V8A (ARM_EXT2_V6T2_V8M | ARM_EXT2_ATOMICS)
#define ARM_AEXT2_V8_1A (ARM_AEXT2_V8A | ARM_EXT2_PAN)
#define ARM_AEXT2_V8_2A (ARM_AEXT2_V8_1A | ARM_EXT2_V8_2A)
#define ARM_AEXT_V8M_BASE (ARM_AEXT_V6SM | ARM_EXT_DIV)
#define ARM_AEXT_V8M_MAIN ARM_AEXT_V7M
#define ARM_AEXT2_V8M (ARM_EXT2_V8M | ARM_EXT2_ATOMICS)
#define ARM_AEXT2_V8M (ARM_EXT2_V8M | ARM_EXT2_ATOMICS | ARM_EXT2_V6T2_V8M)
/* Processors with specific extensions in the co-processor space. */
#define ARM_ARCH_XSCALE ARM_FEATURE_LOW (ARM_AEXT_V5TE, ARM_CEXT_XSCALE)
@ -243,23 +246,24 @@
#define ARM_ARCH_V6K ARM_FEATURE_CORE_LOW (ARM_AEXT_V6K)
#define ARM_ARCH_V6Z ARM_FEATURE_CORE_LOW (ARM_AEXT_V6Z)
#define ARM_ARCH_V6KZ ARM_FEATURE_CORE_LOW (ARM_AEXT_V6KZ)
#define ARM_ARCH_V6T2 ARM_FEATURE_CORE_LOW (ARM_AEXT_V6T2)
#define ARM_ARCH_V6KT2 ARM_FEATURE_CORE_LOW (ARM_AEXT_V6KT2)
#define ARM_ARCH_V6ZT2 ARM_FEATURE_CORE_LOW (ARM_AEXT_V6ZT2)
#define ARM_ARCH_V6KZT2 ARM_FEATURE_CORE_LOW (ARM_AEXT_V6KZT2)
#define ARM_ARCH_V6T2 ARM_FEATURE_CORE (ARM_AEXT_V6T2, ARM_EXT2_V6T2_V8M)
#define ARM_ARCH_V6KT2 ARM_FEATURE_CORE (ARM_AEXT_V6KT2, ARM_EXT2_V6T2_V8M)
#define ARM_ARCH_V6ZT2 ARM_FEATURE_CORE (ARM_AEXT_V6ZT2, ARM_EXT2_V6T2_V8M)
#define ARM_ARCH_V6KZT2 ARM_FEATURE_CORE (ARM_AEXT_V6KZT2, ARM_EXT2_V6T2_V8M)
#define ARM_ARCH_V6M ARM_FEATURE_CORE_LOW (ARM_AEXT_V6M)
#define ARM_ARCH_V6SM ARM_FEATURE_CORE_LOW (ARM_AEXT_V6SM)
#define ARM_ARCH_V7 ARM_FEATURE_CORE_LOW (ARM_AEXT_V7)
#define ARM_ARCH_V7A ARM_FEATURE_CORE_LOW (ARM_AEXT_V7A)
#define ARM_ARCH_V7VE ARM_FEATURE_CORE_LOW (ARM_AEXT_V7VE)
#define ARM_ARCH_V7R ARM_FEATURE_CORE_LOW (ARM_AEXT_V7R)
#define ARM_ARCH_V7M ARM_FEATURE_CORE_LOW (ARM_AEXT_V7M)
#define ARM_ARCH_V7EM ARM_FEATURE_CORE_LOW (ARM_AEXT_V7EM)
#define ARM_ARCH_V8A ARM_FEATURE_CORE (ARM_AEXT_V8A, ARM_EXT2_ATOMICS)
#define ARM_ARCH_V7 ARM_FEATURE_CORE (ARM_AEXT_V7, ARM_EXT2_V6T2_V8M)
#define ARM_ARCH_V7A ARM_FEATURE_CORE (ARM_AEXT_V7A, ARM_EXT2_V6T2_V8M)
#define ARM_ARCH_V7VE ARM_FEATURE_CORE (ARM_AEXT_V7VE, ARM_EXT2_V6T2_V8M)
#define ARM_ARCH_V7R ARM_FEATURE_CORE (ARM_AEXT_V7R, ARM_EXT2_V6T2_V8M)
#define ARM_ARCH_V7M ARM_FEATURE_CORE (ARM_AEXT_V7M, ARM_EXT2_V6T2_V8M)
#define ARM_ARCH_V7EM ARM_FEATURE_CORE (ARM_AEXT_V7EM, ARM_EXT2_V6T2_V8M)
#define ARM_ARCH_V8A ARM_FEATURE_CORE (ARM_AEXT_V8A, ARM_AEXT2_V8A)
#define ARM_ARCH_V8_1A ARM_FEATURE (ARM_AEXT_V8A, ARM_AEXT2_V8_1A, \
CRC_EXT_ARMV8)
#define ARM_ARCH_V8_2A ARM_FEATURE (ARM_AEXT_V8A, ARM_AEXT2_V8_2A, \
CRC_EXT_ARMV8)
#define ARM_ARCH_V8M_BASE ARM_FEATURE_CORE (ARM_AEXT_V8M_BASE, ARM_AEXT2_V8M)
#define ARM_ARCH_V8M_MAIN ARM_FEATURE_CORE (ARM_AEXT_V8M_MAIN, ARM_AEXT2_V8M)
/* Some useful combinations: */
@ -270,26 +274,29 @@
#define FPU_ANY_HARD ARM_FEATURE_COPROC (FPU_FPA | FPU_VFP_HARD | FPU_MAVERICK)
/* Extensions containing some Thumb-2 instructions. If any is present, Thumb
ISA is Thumb-2. */
#define ARM_ARCH_THUMB2 ARM_FEATURE_CORE_LOW (ARM_EXT_V6T2 | ARM_EXT_V7 \
| ARM_EXT_DIV | ARM_EXT_V8)
#define ARM_ARCH_THUMB2 ARM_FEATURE_CORE (ARM_EXT_V6T2 | ARM_EXT_V7 \
| ARM_EXT_DIV | ARM_EXT_V8, \
ARM_EXT2_ATOMICS | ARM_EXT2_V6T2_V8M)
/* v7-a+sec. */
#define ARM_ARCH_V7A_SEC ARM_FEATURE_CORE_LOW (ARM_AEXT_V7A | ARM_EXT_SEC)
#define ARM_ARCH_V7A_SEC \
ARM_FEATURE_CORE (ARM_AEXT_V7A | ARM_EXT_SEC, ARM_EXT2_V6T2_V8M)
/* v7-a+mp+sec. */
#define ARM_ARCH_V7A_MP_SEC \
ARM_FEATURE_CORE_LOW (ARM_AEXT_V7A | ARM_EXT_MP | ARM_EXT_SEC)
ARM_FEATURE_CORE (ARM_AEXT_V7A | ARM_EXT_MP | ARM_EXT_SEC, ARM_EXT2_V6T2_V8M)
/* v7-r+idiv. */
#define ARM_ARCH_V7R_IDIV ARM_FEATURE_CORE_LOW (ARM_AEXT_V7R | ARM_EXT_ADIV)
#define ARM_ARCH_V7R_IDIV \
ARM_FEATURE_CORE (ARM_AEXT_V7R | ARM_EXT_ADIV, ARM_EXT2_V6T2_V8M)
/* Features that are present in v6M and v6S-M but not other v6 cores. */
#define ARM_ARCH_V6M_ONLY ARM_FEATURE_CORE_LOW (ARM_AEXT_V6M_ONLY)
/* v8-a+fp. */
#define ARM_ARCH_V8A_FP \
ARM_FEATURE (ARM_AEXT_V8A, ARM_EXT2_ATOMICS, FPU_ARCH_VFP_ARMV8)
ARM_FEATURE (ARM_AEXT_V8A, ARM_AEXT2_V8A, FPU_ARCH_VFP_ARMV8)
/* v8-a+simd (implies fp). */
#define ARM_ARCH_V8A_SIMD \
ARM_FEATURE (ARM_AEXT_V8A, ARM_EXT2_ATOMICS, FPU_ARCH_NEON_VFP_ARMV8)
ARM_FEATURE (ARM_AEXT_V8A, ARM_AEXT2_V8A, FPU_ARCH_NEON_VFP_ARMV8)
/* v8-a+crypto (implies simd+fp). */
#define ARM_ARCH_V8A_CRYPTOV1 \
ARM_FEATURE (ARM_AEXT_V8A, ARM_EXT2_ATOMICS, FPU_ARCH_CRYPTO_NEON_VFP_ARMV8)
ARM_FEATURE (ARM_AEXT_V8A, ARM_AEXT2_V8A, FPU_ARCH_CRYPTO_NEON_VFP_ARMV8)
/* v8.1-a+fp. */
#define ARM_ARCH_V8_1A_FP \