[AArch64] Add ARMv8.2 command line option and feature flag.

ARMv8.2 is an architectural extension of ARMv8. This patch adds an
architecture feature macro for ARMv8.2 to the binutils AArch64 target
with GAS command line option -march=armv8.2-a.

gas/
2015-11-19  Matthew Wahab  <matthew.wahab@arm.com>

	* config/tc-aarch64.c (aarch64_archs): Add "armv8.2-a".
	* doc/c-aarch64.texi (-march): Likewise.

include/opcode/
2015-11-19  Matthew Wahab  <matthew.wahab@arm.com>

	* aarch64.h (AARCH64_FEATURE_V8_2): New.
	(AARCH64_ARCH_V8_2): New.

Change-Id: I129232ab00234a07d18ce4b619607344acb3cbaf

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 31cd750..b3e1610 100644 (file)
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,8 @@
+2015-11-19  Matthew Wahab  <matthew.wahab@arm.com>
+
+       * config/tc-aarch64.c (aarch64_archs): Add "armv8.2-a".
+       * doc/c-aarch64.texi (-march): Likewise.
+
 2015-11-19  Alan Modra  <amodra@gmail.com>
 
        * read.c (output_big_leb128): Describe "sign" parameter.

diff --git a/gas/config/tc-aarch64.c b/gas/config/tc-aarch64.c
index e854b96..0fd6443 100644 (file)
--- a/gas/config/tc-aarch64.c
+++ b/gas/config/tc-aarch64.c
@@ -7717,6 +7717,7 @@ static const struct aarch64_arch_option_table aarch64_archs[] = {
   {"all", AARCH64_ANY},
   {"armv8-a", AARCH64_ARCH_V8},
   {"armv8.1-a", AARCH64_ARCH_V8_1},
+  {"armv8.2-a", AARCH64_ARCH_V8_2},
   {NULL, AARCH64_ARCH_NONE}
 };
 

diff --git a/gas/doc/c-aarch64.texi b/gas/doc/c-aarch64.texi
index e7e6ba4..bfd41c3 100644 (file)
--- a/gas/doc/c-aarch64.texi
+++ b/gas/doc/c-aarch64.texi
@@ -83,8 +83,8 @@ extensions.
 This option specifies the target architecture.  The assembler will
 issue an error message if an attempt is made to assemble an
 instruction which will not execute on the target architecture.  The
-following architecture names are recognized: @code{armv8-a} and
-@code{armv8.1-a}.
+following architecture names are recognized: @code{armv8-a},
+@code{armv8.1-a} and @code{armv8.2-a}.
 
 If both @option{-mcpu} and @option{-march} are specified, the
 assembler will use the setting for @option{-mcpu}.  If neither are

diff --git a/include/opcode/ChangeLog b/include/opcode/ChangeLog
index 8a0a946..a4d4673 100644 (file)
--- a/include/opcode/ChangeLog
+++ b/include/opcode/ChangeLog
@@ -1,3 +1,8 @@
+2015-11-19  Matthew Wahab  <matthew.wahab@arm.com>
+
+       * aarch64.h (AARCH64_FEATURE_V8_2): New.
+       (AARCH64_ARCH_V8_2): New.
+
 2015-11-11  Alan Modra  <amodra@gmail.com>
            Peter Bergner <bergner@vnet.ibm.com>
 

diff --git a/include/opcode/aarch64.h b/include/opcode/aarch64.h
index 711f7e5..fcec92b 100644 (file)
--- a/include/opcode/aarch64.h
+++ b/include/opcode/aarch64.h
@@ -38,6 +38,7 @@ typedef uint32_t aarch64_insn;
 
 /* The following bitmasks control CPU features.  */
 #define AARCH64_FEATURE_V8     0x00000001      /* All processors.  */
+#define AARCH64_FEATURE_V8_2   0x00000020      /* ARMv8.2 processors.  */
 #define AARCH64_FEATURE_CRYPTO 0x00010000      /* Crypto instructions.  */
 #define AARCH64_FEATURE_FP     0x00020000      /* FP instructions.  */
 #define AARCH64_FEATURE_SIMD   0x00040000      /* SIMD instructions.  */
@@ -58,7 +59,14 @@ typedef uint32_t aarch64_insn;
                                                 | AARCH64_FEATURE_PAN  \
                                                 | AARCH64_FEATURE_LOR  \
                                                 | AARCH64_FEATURE_RDMA)
-
+#define AARCH64_ARCH_V8_2      AARCH64_FEATURE (AARCH64_FEATURE_V8,    \
+                                                AARCH64_FEATURE_V8_2   \
+                                                | AARCH64_FEATURE_FP   \
+                                                | AARCH64_FEATURE_SIMD \
+                                                | AARCH64_FEATURE_LSE  \
+                                                | AARCH64_FEATURE_PAN  \
+                                                | AARCH64_FEATURE_LOR  \
+                                                | AARCH64_FEATURE_RDMA)
 
 #define AARCH64_ARCH_NONE      AARCH64_FEATURE (0, 0)
 #define AARCH64_ANY            AARCH64_FEATURE (-1, 0) /* Any basic core.  */