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[PATCH, gas/ARM] Add support for Cortex-M33


[resending with mailing list also as recipient this time]

Hi,

This patch adds support for the Cortex-M33 processors launched by ARM [1]. The patch adds support for the name and wires it up to the ARMv8-M Mainline with DSP extensions architecture. It also updates documentation to mention this new processor.

[1] http://www.arm.com/products/processors/cortex-m/cortex-m33-processor.php

ChangeLog entry is as follows:

*** gas/Changelog ***

2016-10-26  Thomas Preud'homme  <thomas.preudhomme@arm.com>

          * config/tc-arm.c (cortex-m33): Declare new processor.
          * doc/c-arm.texi (cortex-m33): Document new processor.


*** include/ChangeLog ***

2016-10-26  Thomas Preud'homme  <thomas.preudhomme@arm.com>

          * opcode/arm.h (ARM_AEXT_V8M_MAIN_DSP): Define.
          (ARM_AEXT2_V8M_MAIN_DSP): Likewise.
          (ARM_ARCH_V8M_MAIN_DSP): Likewise.


Tested by building libgcc and libstdc++ for Cortex-M33 and running a hello world compiled for it.

Is this ok for master?

Best regards,

Thomas


diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c
index 69dfe989133cbdc12f2da9d2864e6788eace3353..a1b81adf66723321c1a979f47ed4133e3a53ec84 100644
--- a/gas/config/tc-arm.c
+++ b/gas/config/tc-arm.c
@@ -25406,6 +25406,8 @@ static const struct arm_cpu_option_table arm_cpus[] =
   ARM_CPU_OPT ("cortex-r8",	ARM_ARCH_V7R_IDIV,
 						 FPU_ARCH_VFP_V3D16,
 								  "Cortex-R8"),
+  ARM_CPU_OPT ("cortex-m33",	ARM_ARCH_V8M_MAIN_DSP,
+						 FPU_NONE,	  "Cortex-M33"),
   ARM_CPU_OPT ("cortex-m23",	ARM_ARCH_V8M_BASE,
 						 FPU_NONE,	  "Cortex-M23"),
   ARM_CPU_OPT ("cortex-m7",	ARM_ARCH_V7EM,	 FPU_NONE,	  "Cortex-M7"),
diff --git a/gas/doc/c-arm.texi b/gas/doc/c-arm.texi
index 565ef73250e957e2da11cc261ec9d4b5ccb9c7c2..8217095e1a1a051741fbeeb0512893b211da5abb 100644
--- a/gas/doc/c-arm.texi
+++ b/gas/doc/c-arm.texi
@@ -131,6 +131,7 @@ recognized:
 @code{cortex-r5},
 @code{cortex-r7},
 @code{cortex-r8},
+@code{cortex-m33},
 @code{cortex-m23},
 @code{cortex-m7},
 @code{cortex-m4},
diff --git a/include/opcode/arm.h b/include/opcode/arm.h
index feace5cd654d2224e2c2f526a37e4fd248b9900a..3b0d061cb14ef71f47256d6c90296299e27f8d1e 100644
--- a/include/opcode/arm.h
+++ b/include/opcode/arm.h
@@ -151,8 +151,10 @@
 #define ARM_AEXT2_V8_2A	(ARM_AEXT2_V8_1A | ARM_EXT2_V8_2A | ARM_EXT2_RAS)
 #define ARM_AEXT_V8M_BASE (ARM_AEXT_V6SM | ARM_EXT_DIV)
 #define ARM_AEXT_V8M_MAIN ARM_AEXT_V7M
+#define ARM_AEXT_V8M_MAIN_DSP ARM_AEXT_V7EM
 #define ARM_AEXT2_V8M	(ARM_EXT2_V8M | ARM_EXT2_ATOMICS | ARM_EXT2_V6T2_V8M)
 #define ARM_AEXT2_V8M_MAIN (ARM_AEXT2_V8M | ARM_EXT2_V8M_MAIN)
+#define ARM_AEXT2_V8M_MAIN_DSP ARM_AEXT2_V8M_MAIN
 
 /* Processors with specific extensions in the co-processor space.  */
 #define ARM_ARCH_XSCALE	ARM_FEATURE_LOW (ARM_AEXT_V5TE, ARM_CEXT_XSCALE)
@@ -272,6 +274,8 @@
 #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_MAIN)
+#define ARM_ARCH_V8M_MAIN_DSP ARM_FEATURE_CORE (ARM_AEXT_V8M_MAIN_DSP, \
+						ARM_AEXT2_V8M_MAIN_DSP)
 
 /* Some useful combinations:  */
 #define ARM_ARCH_NONE	ARM_FEATURE_LOW (0, 0)



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