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[PATCH] ARM attributes in readelf


This patch should bring readelf's knowledge of ARM attributes up-to-date with ABI r2.07.

I also intend to add support for these attributes to the assembler and linker, but these changes are already useful for examining binaries from other tools.

OK?

Andrew
2008-12-08  Andrew Stubbs  <ams@codesourcery.com>

	binutils/
	* readelf.c (arm_attr_tag_CPU_arch): Add "v6-M" and "v6S-M".
	(arm_attr_tag_WMMX_arch): Add "WMMXv2".
	(arm_attr_tag_NEON_arch): Rename to ...
	(arm_attr_tag_Advanced_SIMD_arch): ... official name.
	(arm_attr_tag_ABI_PCS_config): Rename to ...
	(arm_attr_tag_PCS_config): ... official name.
	(arm_attr_tag_ABI_PCS_RO_DATA): Rename to ...
	(arm_attr_tag_ABI_PCS_RO_data): ... official name.
	(arm_attr_tag_ABI_FP_denormal): Add "Sign only".
	(arm_attr_tag_CPU_unaligned_access): New array.
	(arm_attr_tag_T2EE_use): New array.
	(arm_attr_tag_Virtualization_use): New array.
	(arm_attr_tag_MPextension_use): New array.
	(arm_attr_publ): NEON_arch -> Advanced_SIMD_arch.
	ABI_PCS_config -> PCS_config.
	ABI_PCS_RO_DATA -> ABI_PCS_RO_data.
	Add CPU_unaligned_access, nodefaults, also_compatible_with,
	T2EE_use, conformance, Virtualization_use and MPextension_use.
	(display_arm_attribute): Handle Tag_nodefaults and
	Tag_also_compatible_with.



---
 src/binutils-trunk/binutils/readelf.c |   53 ++++++++++++++++++++++++++++------
 1 files changed, 44 insertions(+), 9 deletions(-)

Index: src/binutils-trunk/binutils/readelf.c
===================================================================
--- src/binutils-trunk/binutils/readelf.c.orig	2008-12-08 15:29:08.000000000 +0000
+++ src/binutils-trunk/binutils/readelf.c	2008-12-08 15:29:19.000000000 +0000
@@ -8642,29 +8642,30 @@ typedef struct
 
 static const char *arm_attr_tag_CPU_arch[] =
   {"Pre-v4", "v4", "v4T", "v5T", "v5TE", "v5TEJ", "v6", "v6KZ", "v6T2",
-   "v6K", "v7"};
+   "v6K", "v7", "v6-M", "v6S-M"};
 static const char *arm_attr_tag_ARM_ISA_use[] = {"No", "Yes"};
 static const char *arm_attr_tag_THUMB_ISA_use[] =
   {"No", "Thumb-1", "Thumb-2"};
 static const char *arm_attr_tag_VFP_arch[] =
   {"No", "VFPv1", "VFPv2", "VFPv3", "VFPv3-D16"};
-static const char *arm_attr_tag_WMMX_arch[] = {"No", "WMMXv1"};
-static const char *arm_attr_tag_NEON_arch[] = {"No", "NEONv1"};
-static const char *arm_attr_tag_ABI_PCS_config[] =
+static const char *arm_attr_tag_WMMX_arch[] = {"No", "WMMXv1", "WMMXv2"};
+static const char *arm_attr_tag_Advanced_SIMD_arch[] = {"No", "NEONv1"};
+static const char *arm_attr_tag_PCS_config[] =
   {"None", "Bare platform", "Linux application", "Linux DSO", "PalmOS 2004",
    "PalmOS (reserved)", "SymbianOS 2004", "SymbianOS (reserved)"};
 static const char *arm_attr_tag_ABI_PCS_R9_use[] =
   {"V6", "SB", "TLS", "Unused"};
 static const char *arm_attr_tag_ABI_PCS_RW_data[] =
   {"Absolute", "PC-relative", "SB-relative", "None"};
-static const char *arm_attr_tag_ABI_PCS_RO_DATA[] =
+static const char *arm_attr_tag_ABI_PCS_RO_data[] =
   {"Absolute", "PC-relative", "None"};
 static const char *arm_attr_tag_ABI_PCS_GOT_use[] =
   {"None", "direct", "GOT-indirect"};
 static const char *arm_attr_tag_ABI_PCS_wchar_t[] =
   {"None", "??? 1", "2", "??? 3", "4"};
 static const char *arm_attr_tag_ABI_FP_rounding[] = {"Unused", "Needed"};
-static const char *arm_attr_tag_ABI_FP_denormal[] = {"Unused", "Needed"};
+static const char *arm_attr_tag_ABI_FP_denormal[] =
+  {"Unused", "Needed", "Sign only"};
 static const char *arm_attr_tag_ABI_FP_exceptions[] = {"Unused", "Needed"};
 static const char *arm_attr_tag_ABI_FP_user_exceptions[] = {"Unused", "Needed"};
 static const char *arm_attr_tag_ABI_FP_number_model[] =
@@ -8686,10 +8687,15 @@ static const char *arm_attr_tag_ABI_opti
 static const char *arm_attr_tag_ABI_FP_optimization_goals[] =
   {"None", "Prefer Speed", "Aggressive Speed", "Prefer Size",
     "Aggressive Size", "Prefer Accuracy", "Aggressive Accuracy"};
+static const char *arm_attr_tag_CPU_unaligned_access[] = {"None", "v6"};
 static const char *arm_attr_tag_VFP_HP_extension[] =
   {"Not Allowed", "Allowed"};
 static const char *arm_attr_tag_ABI_FP_16bit_format[] =
   {"None", "IEEE 754", "Alternative Format"};
+static const char *arm_attr_tag_T2EE_use[] = {"Not Allowed", "Allowed"};
+static const char *arm_attr_tag_Virtualization_use[] =
+  {"Not Allowed", "Allowed"};
+static const char *arm_attr_tag_MPextension_use[] = {"Not Allowed", "Allowed"};
 
 #define LOOKUP(id, name) \
   {id, #name, 0x80 | ARRAY_SIZE(arm_attr_tag_##name), arm_attr_tag_##name}
@@ -8703,11 +8709,11 @@ static arm_attr_public_tag arm_attr_publ
   LOOKUP(9, THUMB_ISA_use),
   LOOKUP(10, VFP_arch),
   LOOKUP(11, WMMX_arch),
-  LOOKUP(12, NEON_arch),
-  LOOKUP(13, ABI_PCS_config),
+  LOOKUP(12, Advanced_SIMD_arch),
+  LOOKUP(13, PCS_config),
   LOOKUP(14, ABI_PCS_R9_use),
   LOOKUP(15, ABI_PCS_RW_data),
-  LOOKUP(16, ABI_PCS_RO_DATA),
+  LOOKUP(16, ABI_PCS_RO_data),
   LOOKUP(17, ABI_PCS_GOT_use),
   LOOKUP(18, ABI_PCS_wchar_t),
   LOOKUP(19, ABI_FP_rounding),
@@ -8724,8 +8730,15 @@ static arm_attr_public_tag arm_attr_publ
   LOOKUP(30, ABI_optimization_goals),
   LOOKUP(31, ABI_FP_optimization_goals),
   {32, "compatibility", 0, NULL},
+  LOOKUP(34, CPU_unaligned_access),
   LOOKUP(36, VFP_HP_extension),
   LOOKUP(38, ABI_FP_16bit_format),
+  {64, "nodefaults", 0, NULL},
+  {65, "also_compatible_with", 0, NULL},
+  LOOKUP(66, T2EE_use),
+  {67, "conformance", 1, NULL},
+  LOOKUP(68, Virtualization_use),
+  LOOKUP(70, MPextension_use)
 };
 #undef LOOKUP
 
@@ -8805,6 +8818,28 @@ display_arm_attribute (unsigned char *p)
 	      p += strlen((char *)p) + 1;
 	      break;
 
+	    case 64: /* Tag_nodefaults.  */
+	      p++;
+	      printf ("True\n");
+	      break;
+
+	    case 65: /* Tag_also_compatible_with.  */
+	      val = read_uleb128 (p, &len);
+	      p += len;
+	      if (val == 6 /* Tag_CPU_arch.  */)
+		{
+		  val = read_uleb128 (p, &len);
+		  p += len;
+		  if ((unsigned int)val >= ARRAY_SIZE(arm_attr_tag_CPU_arch))
+		    printf ("??? (%d)\n", val);
+		  else
+		    printf ("%s\n", arm_attr_tag_CPU_arch[val]);
+		}
+	      else
+		printf ("???\n");
+	      while (*(p++) != '\0' /* NUL terminator.  */);
+	      break;
+
 	    default:
 	      abort();
 	    }

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