[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 31cd750610125a9247914cd179e9cc8279c5dad2..b3e1610e1699096f1a8362780817dcb2980539f2 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 e854b966f0b8a5464fbd0b0ab37830fd3714812f..0fd644392fd33525382bfd7195968f06517ab525 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 e7e6ba449bddab2d7f507101dbf96d40fc9abe47..bfd41c31ef6a60b4145e52bda18875d354f2659c 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 8a0a9469575e0c87a11b115905301b6af495503f..a4d4673769bcb6c748babf58c8a0ca6d305e84ce 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 711f7e5cf8e74d70b790a14d74ba68578e759e9c..fcec92b95818c56a97608130b944a34d226e5bb2 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.  */