Fix minor NDS32 renaming snafu

[Alan Modra]

Some extern declarations differ in constness to their definitions too.
Let's make sure this sort of thing doesn't happen again, but putting
the externs in a header where they belong.

gas/
	* config/tc-nds32.c (nds32_keyword_gpr): Don't declare.
	(md_begin): Constify k.
opcodes/
	* nds32-dis.c (nds32_find_reg_keyword): Constify arg and return.
	(nds32_parse_audio_ext, nds32_parse_opcode): Constify psys_reg.
	(nds32_field_table, nds32_opcode_table, nds32_keyword_table),
	(nds32_opcodes, nds32_operand_fields, nds32_keywords),
	(nds32_keyword_gpr): Move declarations to..
	* nds32-asm.h: ..here, constifying to match definitions.

diff --git a/gas/config/tc-nds32.c b/gas/config/tc-nds32.c
index 04ae6895ec1..4ff667caf61 100644
--- a/gas/config/tc-nds32.c
+++ b/gas/config/tc-nds32.c
@@ -97,7 +97,6 @@ static int optimize_for_space = 0;
 static int label_exist = 0;
 /* Flag to save state in omit_fp region.  */
 static int in_omit_fp = 0;
-extern struct nds32_keyword nds32_keyword_gpr[];
 /* Tag there is relax relocation having to link.  */
 static bool relaxing = false;
 /* ICT model.  */
@@ -4601,7 +4600,7 @@ nds32_asm_parse_operand (struct nds32_asm_desc *pdesc ATTRIBUTE_UNUSED,
 void
 md_begin (void)
 {
-  struct nds32_keyword *k;
+  const struct nds32_keyword *k;
   relax_info_t *relax_info;
   int flags = 0;
 
diff --git a/opcodes/nds32-asm.h b/opcodes/nds32-asm.h
index 11ae48f28d7..e0ec98df26e 100644
--- a/opcodes/nds32-asm.h
+++ b/opcodes/nds32-asm.h
@@ -268,6 +268,14 @@ typedef struct nds32_field
 		char **, int64_t *);
 } field_t;
 
+extern const field_t *nds32_field_table[NDS32_CORE_COUNT];
+extern opcode_t *nds32_opcode_table[NDS32_CORE_COUNT];
+extern const keyword_t **nds32_keyword_table[NDS32_CORE_COUNT];
+extern struct nds32_opcode nds32_opcodes[];
+extern const field_t nds32_operand_fields[];
+extern const keyword_t *nds32_keywords[];
+extern const keyword_t nds32_keyword_gpr[];
+
 extern void nds32_assemble (nds32_asm_desc_t *, nds32_asm_insn_t *, char *);
 extern void nds32_asm_init (nds32_asm_desc_t *, int);
 
diff --git a/opcodes/nds32-dis.c b/opcodes/nds32-dis.c
index c888487efa9..c8cb506165f 100644
--- a/opcodes/nds32-dis.c
+++ b/opcodes/nds32-dis.c
@@ -65,14 +65,6 @@ struct nds32_private_data
 #define NDS32_PARSE_INSN16      0x01
 #define NDS32_PARSE_INSN32      0x02
 
-extern const field_t *nds32_field_table[NDS32_CORE_COUNT];
-extern opcode_t *nds32_opcode_table[NDS32_CORE_COUNT];
-extern keyword_t **nds32_keyword_table[NDS32_CORE_COUNT];
-extern struct nds32_opcode nds32_opcodes[];
-extern const field_t nds32_operand_fields[];
-extern keyword_t *nds32_keywords[];
-extern const keyword_t nds32_keyword_gpr[];
-
 static uint32_t nds32_mask_opcode (uint32_t);
 static void nds32_special_opcode (uint32_t, struct nds32_opcode **);
 static int get_mapping_symbol_type (struct disassemble_info *, int,
@@ -86,8 +78,8 @@ static htab_t opcode_htab;
 
 /* Find the value map register name.  */
 
-static keyword_t *
-nds32_find_reg_keyword (keyword_t *reg, int value)
+static const keyword_t *
+nds32_find_reg_keyword (const keyword_t *reg, int value)
 {
   if (!reg)
     return NULL;
@@ -107,7 +99,7 @@ nds32_parse_audio_ext (const field_t *pfd,
 {
   fprintf_ftype func = info->fprintf_func;
   void *stream = info->stream;
-  keyword_t *psys_reg;
+  const keyword_t *psys_reg;
   int int_value, new_value;
 
   if (pfd->hw_res == HW_INT || pfd->hw_res == HW_UINT)
@@ -224,7 +216,7 @@ nds32_parse_opcode (struct nds32_opcode *opc, bfd_vma pc ATTRIBUTE_UNUSED,
   unsigned int push25gpr = 0, lsmwRb, lsmwRe, lsmwEnb4, checkbit, i;
   int int_value, ifthe1st = 1;
   const field_t *pfd;
-  keyword_t *psys_reg;
+  const keyword_t *psys_reg;
 
   if (opc == NULL)
     {

-- 
Alan Modra
Australia Development Lab, IBM