CSKY: Support attribute section.

bfd
        * elf32-csky.c (csky_archs): Fix arch names.
        (csky_find_arch_with_name): New.
        (elf32_csky_merge_attributes): New.
        (csky_elf_merge_private_bfd_data): Add process of merge
        attribute section.
        (elf32_csky_obj_attrs_arg_type): New.
        (elf32_csky_obj_attrs_handle_unknown): New.
        (elf_backend_obj_attrs_vendor): Define.
        (elf_backend_obj_attrs_section): Define.
        (elf_backend_obj_attrs_arg_type): Define.
        (elf_backend_obj_attrs_section_type): Define.

binutils/
        * readelf.c (get_csky_section_type_name): New.
        (get_section_type_name): Add handler for CSKY.
        (display_csky_attribute): New.
        (process_arch_specific): Add handler for CSKY.
        * testsuite/binutils-all/strip-3.d: Remove .csky.attributes
        section.

elfcpp/
        * elfcpp.h (enum SHT): New enum SHT_CSKY_ATTRIBUTES.

gas/
        * gas/config/tc-csky.c (md_begin): Set attributes.
        (isa_flag): Change type to unsigned 64 bits.
        (struct csky_cpu_info): Likewise.
        (struct csky_macro_info): Likewise.
        (set_csky_attribute): New.
        * testsuite/gas/csky/802j.d: Ignore .csky.attributes section.
        * testsuite/gas/csky/all.d: Likewise.
        * testsuite/gas/csky/bsr1.d: Likewise.
        * testsuite/gas/csky/csky_vdsp.d: Likewise.
        * testsuite/gas/csky/cskyv2_all.d: Likewise.
        * testsuite/gas/csky/cskyv2_ck803r2.d: Likewise.
        * testsuite/gas/csky/cskyv2_ck860.d: Likewise.
        * testsuite/gas/csky/cskyv2_dsp.d: Likewise.
        * testsuite/gas/csky/cskyv2_elrw.d: Likewise.
        * testsuite/gas/csky/cskyv2_float.d: Likewise.
        * testsuite/gas/csky/enhance_dsp.d: Likewise.
        * testsuite/gas/csky/java.d: Likewise.
        * testsuite/gas/csky/v1_float.d: Likewise.
        * testsuite/gas/csky/v2_float_part1.d: Likewise.
        * testsuite/gas/csky/v2_float_part2.d: Likewise.
        * testsuite/gas/csky/v2_tls_gd.d: Likewise.
        * testsuite/gas/csky/v2_tls_ie.d: Likewise.
        * testsuite/gas/csky/v2_tls_ld.d: Likewise.
        * testsuite/gas/csky/v2_tls_le.d: Likewise.
        * testsuite/gas/elf/elf.exp: Add handler for CSKY.
        * testsuite/gas/elf/section2.e-csky: New.

include/
        * elf/csky.h (SHT_CSKY_ATTRIBUTES): Define.
        (Tag_CSKY_ARCH_NAME): New enum constant.
        (Tag_CSKY_CPU_NAME): Likewise.
        (Tag_CSKY_ISA_FLAGS): Likewise.
        (Tag_CSKY_DSP_VERSION): Likewise.
        (Tag_CSKY_VDSP_VERSION): Likewise.
        (Tag_CSKY_FPU_VERSION): Likewise.
        (Tag_CSKY_FPU_ABI): Likewise.
        (Tag_CSKY_FPU_ROUNDING): Likewise.
        (Tag_CSKY_FPU_DENORMAL): Likewise.
        (Tag_CSKY_FPU_Exception): Likewise.
        (Tag_CSKY_FPU_NUMBER_MODULE): Likewise.
        (Tag_CSKY_FPU_HARDFP): Likewise.
        (Tag_CSKY_MAX): Likewise.
        (VAL_CSKY_DSP_VERSION_EXTENSION): Likewise.
        (VAL_CSKY_DSP_VERSION_2): Likewise.
        (VAL_CSKY_VDSP_VERSION_1): Likewise.
        (VAL_CSKY_VDSP_VERSION_2): Likewise.
        (VAL_CSKY_FPU_ABI_SOFT): Likewise.
        (VAL_CSKY_FPU_ABI_SOFTFP): Likewise.
        (VAL_CSKY_FPU_ABI_HARD): Likewise.
        (VAL_CSKY_FPU_HARDFP_HALF): Likewise.
        (VAL_CSKY_FPU_HARDFP_SINGLE): Likewise.
        (VAL_CSKY_FPU_HARDFP_DOUBLE): Likewise.
        * opcode/csky.h (CSKY_ISA_VDSP_V2): Define.
        CSKYV1_ISA_E1: Change to long constant type.
        CSKYV2_ISA_E1: Likewise.
        CSKYV2_ISA_1E2: Likewise.
        CSKYV2_ISA_2E3: Likewise.
        CSKYV2_ISA_3E7: Likewise.
        CSKYV2_ISA_7E10: Likewise.
        CSKYV2_ISA_3E3R1: Likewise.
        CSKYV2_ISA_3E3R2: Likewise.
        CSKYV2_ISA_10E60: Likewise.
        CSKY_ISA_TRUST: Likewise.
        CSKY_ISA_CACHE: Likewise.
        CSKY_ISA_NVIC: Likewise.
        CSKY_ISA_CP: Likewise.
        CSKY_ISA_MP: Likewise.
        CSKY_ISA_MP_1E2: Likewise.
        CSKY_ISA_JAVA: Likewise.
        CSKY_ISA_MAC: Likewise.
        CSKY_ISA_MAC_DSP: Likewise.
        CSKY_ISA_DSP: Likewise.
        CSKY_ISA_DSP_1E2: Likewise.
        CSKY_ISA_DSP_ENHANCE: Likewise.
        CSKY_ISA_FLOAT_E1: Likewise.
        CSKY_ISA_FLOAT_1E2: Likewise.
        CSKY_ISA_FLOAT_1E3: Likewise.
        CSKY_ISA_FLOAT_3E4: Likewise.
        CSKY_ISA_VDSP: Likewise.

ld/
        * emulparams/cskyelf.sh: Support attribute section.
        * testsuite/ld-csky/tls-le-v1.d: Match .csky.attributes section.
        * ld/testsuite/ld-csky/tls-le.d: Likewise.
        * testsuite/ld-elf/non-contiguous.ld: Ignore .csky.attributes
        section.

opcodes/
        * csky-dis.c (CSKY_DEFAULT_ISA): Define.
        (csky_dis_info): Add member isa.
        (csky_find_inst_info): Skip instructions that do not belong to
        current CPU.
        (csky_get_disassembler): Get infomation from attribute section.
        (print_insn_csky): Set defualt ISA flag.
        * csky.h (CSKY_ISA_VDSP_2): Rename from CSKY_ISA_VDSP_V2.
        * csky-opc.h (struct csky_opcode): Change isa_flag16 and
        isa_flag32'type to unsigned 64 bits.

3 files changed, 131 insertions, 1 deletions

diff --git a/binutils/ChangeLog b/binutils/ChangeLog
index 22d95e2..8a6cadc 100644
--- a/binutils/ChangeLog
+++ b/binutils/ChangeLog
@@ -1,3 +1,12 @@
+2020-08-28  Cooper Qu  <cooper.qu@linux.alibaba.com>
+
+	* readelf.c (get_csky_section_type_name): New.
+	(get_section_type_name): Add handler for CSKY.
+	(display_csky_attribute): New.
+	(process_arch_specific): Add handler for CSKY.
+	* testsuite/binutils-all/strip-3.d: Remove .csky.attributes
+	section.
+
 2020-08-27  Jozef Lawrynowicz  <jozef.l@mittosystems.com>
 
 	* readelf.c (get_msp430x_section_type_name): Rename to ...
diff --git a/binutils/readelf.c b/binutils/readelf.c
index 3758ff1..f02848e 100644
--- a/binutils/readelf.c
+++ b/binutils/readelf.c
@@ -4315,6 +4315,16 @@ get_riscv_section_type_name (unsigned int sh_type)
 }
 
 static const char *
+get_csky_section_type_name (unsigned int sh_type)
+{
+  switch (sh_type)
+    {
+    case SHT_CSKY_ATTRIBUTES:  return "CSKY_ATTRIBUTES";
+    default:  return NULL;
+    }
+}
+
+static const char *
 get_section_type_name (Filedata * filedata, unsigned int sh_type)
 {
   static char buff[32];
@@ -4397,6 +4407,9 @@ get_section_type_name (Filedata * filedata, unsigned int sh_type)
 	    case EM_RISCV:
 	      result = get_riscv_section_type_name (sh_type);
 	      break;
+	    case EM_CSKY:
+	      result = get_csky_section_type_name (sh_type);
+	      break;
 	    default:
 	      result = NULL;
 	      break;
@@ -16358,6 +16371,110 @@ display_riscv_attribute (unsigned char *p,
   return p;
 }
 
+static unsigned char *
+display_csky_attribute (unsigned char * p,
+			const unsigned char * const end)
+{
+  unsigned int tag;
+  unsigned int val;
+  READ_ULEB (tag, p, end);
+
+  if (tag >= Tag_CSKY_MAX)
+    {
+      return display_tag_value (-1, p, end);
+    }
+
+  switch (tag)
+    {
+    case Tag_CSKY_ARCH_NAME:
+      printf ("  Tag_CSKY_ARCH_NAME:\t\t");
+      return display_tag_value (-1, p, end);
+    case Tag_CSKY_CPU_NAME:
+      printf ("  Tag_CSKY_CPU_NAME:\t\t");
+      return display_tag_value (-1, p, end);
+
+    case Tag_CSKY_ISA_FLAGS:
+      printf ("  Tag_CSKY_ISA_FLAGS:\t\t");
+      return display_tag_value (0, p, end);
+    case Tag_CSKY_ISA_EXT_FLAGS:
+      printf ("  Tag_CSKY_ISA_EXT_FLAGS:\t");
+      return display_tag_value (0, p, end);
+
+    case Tag_CSKY_DSP_VERSION:
+      printf ("  Tag_CSKY_DSP_VERSION:\t\t");
+      READ_ULEB (val, p, end);
+      if (val == VAL_CSKY_DSP_VERSION_EXTENSION)
+	printf ("DSP Extension\n");
+      else if (val == VAL_CSKY_DSP_VERSION_2)
+	printf ("DSP 2.0\n");
+      break;
+
+    case Tag_CSKY_VDSP_VERSION:
+      printf ("  Tag_CSKY_VDSP_VERSION:\t");
+      READ_ULEB (val, p, end);
+      printf ("VDSP Version %d\n", val);
+      break;
+
+    case Tag_CSKY_FPU_VERSION:
+      printf ("  Tag_CSKY_FPU_VERSION:\t\t");
+      READ_ULEB (val, p, end);
+      if (val == VAL_CSKY_FPU_VERSION_1)
+	printf ("ABIV1 FPU Version 1\n");
+      else if (val == VAL_CSKY_FPU_VERSION_2)
+	printf ("FPU Version 2\n");
+      break;
+
+    case Tag_CSKY_FPU_ABI:
+      printf ("  Tag_CSKY_FPU_ABI:\t\t");
+      READ_ULEB (val, p, end);
+      if (val == VAL_CSKY_FPU_ABI_HARD)
+	printf ("Hard\n");
+      else if (val == VAL_CSKY_FPU_ABI_SOFTFP)
+	printf ("SoftFP\n");
+      else if (val == VAL_CSKY_FPU_ABI_SOFT)
+	printf ("Soft\n");
+      break;
+    case Tag_CSKY_FPU_ROUNDING:
+      READ_ULEB (val, p, end);
+      if (val == 1) {
+	printf ("  Tag_CSKY_FPU_ROUNDING:\t");
+	printf ("Needed\n");
+      }
+      break;
+    case Tag_CSKY_FPU_DENORMAL:
+      READ_ULEB (val, p, end);
+      if (val == 1) {
+	printf ("  Tag_CSKY_FPU_DENORMAL:\t");
+	printf ("Needed\n");
+      }
+      break;
+    case Tag_CSKY_FPU_Exception:
+      READ_ULEB (val, p, end);
+      if (val == 1) {
+	printf ("  Tag_CSKY_FPU_Exception:\t");
+	printf ("Needed\n");
+      }
+      break;
+    case Tag_CSKY_FPU_NUMBER_MODULE:
+      printf ("  Tag_CSKY_FPU_NUMBER_MODULE:\t");
+      return display_tag_value (-1, p, end);
+    case Tag_CSKY_FPU_HARDFP:
+      printf ("  Tag_CSKY_FPU_HARDFP:\t\t");
+      READ_ULEB (val, p, end);
+      if (val & VAL_CSKY_FPU_HARDFP_HALF)
+	printf (" Half");
+      if (val & VAL_CSKY_FPU_HARDFP_SINGLE)
+	printf (" Single");
+      if (val & VAL_CSKY_FPU_HARDFP_DOUBLE)
+	printf (" Double");
+      printf ("\n");
+      break;
+    default:
+      return display_tag_value (tag, p, end);
+     }
+  return p;
+}
+
 static bfd_boolean
 process_attributes (Filedata * filedata,
 		    const char * public_name,
@@ -20146,6 +20263,10 @@ process_arch_specific (Filedata * filedata)
 				 display_tic6x_attribute,
 				 display_generic_attribute);
 
+    case EM_CSKY:
+      return process_attributes (filedata, "csky", SHT_CSKY_ATTRIBUTES,
+				 display_csky_attribute, NULL);
+
     default:
       return process_attributes (filedata, "gnu", SHT_GNU_ATTRIBUTES,
 				 display_public_gnu_attributes,
diff --git a/binutils/testsuite/binutils-all/strip-3.d b/binutils/testsuite/binutils-all/strip-3.d
index 2a886d2..cb2f78e 100644
--- a/binutils/testsuite/binutils-all/strip-3.d
+++ b/binutils/testsuite/binutils-all/strip-3.d
@@ -1,6 +1,6 @@
 #PROG: strip
 #source: empty.s
-#strip: -R .text -R .data -R .bss -R .ARM.attributes -R .reginfo -R .gnu.attributes -R .MIPS.abiflags -R .pdr -R .xtensa.info -R .ARC.attributes -R .note.gnu.property -R .riscv.attributes
+#strip: -R .text -R .data -R .bss -R .ARM.attributes -R .reginfo -R .gnu.attributes -R .MIPS.abiflags -R .pdr -R .xtensa.info -R .ARC.attributes -R .note.gnu.property -R .riscv.attributes -R .csky.attributes
 #readelf: -S --wide
 #name: strip empty file
 #target: *-*-linux* *-*-gnu* arm*-*-uclinuxfdpiceabi