From ff8646eef8bdef6fe3091eb79627929c1c100c6a Mon Sep 17 00:00:00 2001 From: Thomas Preud'homme Date: Thu, 24 Dec 2015 17:26:08 +0800 Subject: Add assembler support for ARMv8-M Baseline 2015-12-24 Thomas Preud'homme 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. --- bfd/ChangeLog | 5 +++++ bfd/elf32-arm.c | 2 +- 2 files changed, 6 insertions(+), 1 deletion(-) (limited to 'bfd') diff --git a/bfd/ChangeLog b/bfd/ChangeLog index aea882b..65e9bfb 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,5 +1,10 @@ 2015-12-24 Thomas Preud'homme + (tag_cpu_arch_combine): Adjust comment in v4t_plus_v6_m with regards + to merging with ARMv8-M Baseline. + +2015-12-24 Thomas Preud'homme + (tag_cpu_arch_combine): Adjust v4t_plus_v6_m and comb array to account for new TAG_CPU_ARCH_V4T_PLUS_V6_M value. Deal with NULL values in comb array. diff --git a/bfd/elf32-arm.c b/bfd/elf32-arm.c index 93f32f3..415090f 100644 --- a/bfd/elf32-arm.c +++ b/bfd/elf32-arm.c @@ -12293,7 +12293,7 @@ tag_cpu_arch_combine (bfd *ibfd, int oldtag, int *secondary_compat_out, T(V7E_M), /* V7E_M. */ T(V8), /* V8. */ -1, /* Unused. */ - -1, /* Unused. */ + -1, /* V8-M BASELINE. */ -1, /* V8-M MAINLINE. */ T(V4T_PLUS_V6_M) /* V4T plus V6_M. */ }; -- cgit v1.1