Remove "typedef enum ..."

I noticed a few spots in GDB that use "typedef enum".  However, in C++
this isn't as useful, as the tag is automatically entered as a
typedef.  This patch removes most uses of "typedef enum" -- the
exceptions being in some nat-* code I can't compile, and
glibc_thread_db.h, which I think is more or less a copy of some C code
from elsewhere.

Tested by rebuilding.

gdb/arm-tdep.c

@@ -10701,18 +10701,18 @@ enum arm_record_result
   ARM_RECORD_FAILURE = 1
 };
 
-typedef enum
+enum arm_record_strx_t
 {
   ARM_RECORD_STRH=1,
   ARM_RECORD_STRD
-} arm_record_strx_t;
+};
 
-typedef enum
+enum record_type_t
 {
   ARM_RECORD=1,
   THUMB_RECORD,
   THUMB2_RECORD
-} record_type_t;
+};
 
 
 static int

gdb/break-catch-fork.c

@@ -197,12 +197,11 @@ create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch,
   install_breakpoint (0, std::move (c), 1);
 }
 
-typedef enum
+enum catch_fork_kind
 {
   catch_fork_temporary, catch_vfork_temporary,
   catch_fork_permanent, catch_vfork_permanent
-}
-catch_fork_kind;
+};
 
 static void
 catch_fork_command_1 (const char *arg, int from_tty,

gdb/command.h

@@ -71,7 +71,7 @@ enum command_class
 };
 
 /* Types of "set" or "show" command.  */
-typedef enum var_types
+enum var_types
   {
     /* "on" or "off".  *VAR is a bool which is true for on,
        false for off.  */
@@ -120,8 +120,7 @@ typedef enum var_types
        *VAR is a char pointer to the name of the element that we
        find.  */
     var_enum
-  }
-var_types;
+  };
 
 /* Return true if a setting of type VAR_TYPE is backed with type T.
 

gdb/f-exp.y

@@ -1639,7 +1639,7 @@ yylex (void)
   {
     std::string tmp = copy_name (yylval.sval);
     struct block_symbol result;
-    const enum domain_enum_tag lookup_domains[] =
+    const domain_enum lookup_domains[] =
     {
       STRUCT_DOMAIN,
       VAR_DOMAIN,

gdb/ia64-tdep.c

@@ -75,7 +75,7 @@ static gdb::optional<gdb::byte_vector> ktab_buf;
 
 /* An enumeration of the different IA-64 instruction types.  */
 
-typedef enum instruction_type
+enum instruction_type
 {
   A,			/* Integer ALU ;    I-unit or M-unit */
   I,			/* Non-ALU integer; I-unit */
@@ -85,7 +85,7 @@ typedef enum instruction_type
   L,			/* Extended (L+X) ; I-unit */
   X,			/* Extended (L+X) ; I-unit */
   undefined		/* undefined or reserved */
-} instruction_type;
+};
 
 /* We represent IA-64 PC addresses as the value of the instruction
    pointer or'd with some bit combination in the low nibble which

gdb/jit.h

@@ -28,12 +28,12 @@ struct minimal_symbol;
    these actions.  These values are used by the inferior, so the
    values of these enums cannot be changed.  */
 
-typedef enum
+enum jit_actions_t
 {
   JIT_NOACTION = 0,
   JIT_REGISTER,
   JIT_UNREGISTER
-} jit_actions_t;
+};
 
 /* This struct describes a single symbol file in a linked list of
    symbol files describing generated code.  As the inferior generates

gdb/linespec.c

@@ -228,7 +228,7 @@ struct symbol_searcher_collect_info
 
 /* Token types  */
 
-enum ls_token_type
+enum linespec_token_type
 {
   /* A keyword  */
   LSTOKEN_KEYWORD = 0,
@@ -251,7 +251,6 @@ enum ls_token_type
   /* Consumed token  */
   LSTOKEN_CONSUMED
 };
-typedef enum ls_token_type linespec_token_type;
 
 /* List of keywords.  This is NULL-terminated so that it can be used
    as enum completer.  */

gdb/nat/windows-nat.h

@@ -129,12 +129,12 @@ struct pending_stop
   DEBUG_EVENT event;
 };
 
-typedef enum
+enum handle_exception_result
 {
   HANDLE_EXCEPTION_UNHANDLED = 0,
   HANDLE_EXCEPTION_HANDLED,
   HANDLE_EXCEPTION_IGNORED
-} handle_exception_result;
+};
 
 /* A single Windows process.  An object of this type (or subclass) is
    created by the client.  Some methods must be provided by the client

gdb/nat/x86-dregs.c

@@ -206,7 +206,7 @@ x86_get_debug_register_length ()
 #define X86_DR_WATCH_HIT(dr6, i) ((dr6) & (1 << (i)))
 
 /* Types of operations supported by x86_handle_nonaligned_watchpoint.  */
-typedef enum { WP_INSERT, WP_REMOVE, WP_COUNT } x86_wp_op_t;
+enum x86_wp_op_t { WP_INSERT, WP_REMOVE, WP_COUNT };
 
 /* Print the values of the mirrored debug registers.  */
 

gdb/psympriv.h

@@ -71,7 +71,7 @@ struct partial_symbol
 
   /* Name space code.  */
 
-  ENUM_BITFIELD(domain_enum_tag) domain : SYMBOL_DOMAIN_BITS;
+  ENUM_BITFIELD(domain_enum) domain : SYMBOL_DOMAIN_BITS;
 
   /* Address class (for info_symbols).  Note that we don't allow
      synthetic "aclass" values here at present, simply because there's

gdb/python/py-event.h

@@ -45,13 +45,13 @@ extern int emit_exited_event (const LONGEST *exit_code, struct inferior *inf);
 /* For inferior function call events, discriminate whether event is
    before or after the call. */
 
-typedef enum
+enum inferior_call_kind
 {
   /* Before the call */
   INFERIOR_CALL_PRE,
   /* after the call */
   INFERIOR_CALL_POST,
-} inferior_call_kind;
+};
 
 extern int emit_inferior_call_event (inferior_call_kind kind,
 				     ptid_t thread, CORE_ADDR addr);

gdb/symtab.h

@@ -866,7 +866,7 @@ struct minimal_symbol : public general_symbol_info
 /* Different name domains for symbols.  Looking up a symbol specifies a
    domain and ignores symbol definitions in other name domains.  */
 
-typedef enum domain_enum_tag
+enum domain_enum
 {
   /* UNDEF_DOMAIN is used when a domain has not been discovered or
      none of the following apply.  This usually indicates an error either
@@ -899,7 +899,7 @@ typedef enum domain_enum_tag
 
   /* This must remain last.  */
   NR_DOMAINS
-} domain_enum;
+};
 
 /* The number of bits in a symbol used to represent the domain.  */
 
@@ -1418,7 +1418,7 @@ struct symbol : public general_symbol_info, public allocate_on_obstack
 
   /* Domain code.  */
 
-  ENUM_BITFIELD(domain_enum_tag) m_domain : SYMBOL_DOMAIN_BITS;
+  ENUM_BITFIELD(domain_enum) m_domain : SYMBOL_DOMAIN_BITS;
 
   /* Address class.  This holds an index into the 'symbol_impls'
      table.  The actual enum address_class value is stored there,

gdb/xtensa-tdep.c

@@ -2058,7 +2058,7 @@ call0_ret (CORE_ADDR start_pc, CORE_ADDR finish_pc)
    The purpose of this is to simplify prologue analysis by separating 
    instruction decoding (libisa) from the semantics of prologue analysis.  */
 
-typedef enum
+enum xtensa_insn_kind
 {
   c0opc_illegal,       /* Unknown to libisa (invalid) or 'ill' opcode.  */
   c0opc_uninteresting, /* Not interesting for Call0 prologue analysis.  */
@@ -2079,7 +2079,7 @@ typedef enum
   c0opc_rfwo,          /* RFWO instruction.  */
   c0opc_rfwu,          /* RFWU instruction.  */
   c0opc_NrOf	       /* Number of opcode classifications.  */
-} xtensa_insn_kind;
+};
 
 /* Return true,  if OPCNAME is RSR,  WRS,  or XSR instruction.  */
 
@@ -2753,12 +2753,12 @@ execute_s32e (struct gdbarch *gdbarch, int at, int as, int offset, CORE_ADDR wb)
 
 #define XTENSA_MAX_WINDOW_INTERRUPT_HANDLER_LEN  200
 
-typedef enum
+enum xtensa_exception_handler_t
 {
   xtWindowOverflow,
   xtWindowUnderflow,
   xtNoExceptionHandler
-} xtensa_exception_handler_t;
+};
 
 /* Execute instruction stream from current PC until hitting RFWU or RFWO.
    Return type of Xtensa Window Interrupt Handler on success.  */

gdb/xtensa-tdep.h

@@ -31,7 +31,7 @@
 
 /*  Xtensa register type.  */
 
-typedef enum 
+enum xtensa_register_type_t
 {
   xtRegisterTypeArRegfile = 1,	/* Register File ar0..arXX.  */
   xtRegisterTypeSpecialReg,	/* CPU states, such as PS, Booleans, (rsr).  */
@@ -43,14 +43,14 @@ typedef enum
   xtRegisterTypeWindow,		/* Live window registers (a0..a15).  */
   xtRegisterTypeVirtual,	/* PC, FP.  */
   xtRegisterTypeUnknown
-} xtensa_register_type_t;
+};
 
 
 /*  Xtensa register group.  */
 
 #define XTENSA_MAX_COPROCESSOR	0x10  /* Number of Xtensa coprocessors.  */
 
-typedef enum 
+enum xtensa_register_group_t
 {
   xtRegisterGroupUnknown = 0,
   xtRegisterGroupRegFile	= 0x0001,    /* Register files without ARx.  */
@@ -75,16 +75,16 @@ typedef enum
   xtRegisterGroupCP6	    = 0x40000000,    /* CP6.  */
   xtRegisterGroupCP7	    = 0x80000000,    /* CP7.  */
 
-} xtensa_register_group_t;
+};
 
 
 /*  Xtensa target flags.  */
 
-typedef enum 
+enum xtensa_target_flags_t
 {
   xtTargetFlagsNonVisibleRegs	= 0x0001,
   xtTargetFlagsUseFetchStore	= 0x0002,
-} xtensa_target_flags_t;
+};
 
 
 /*  Mask.  */
@@ -143,11 +143,11 @@ typedef struct
 
 /*  Call-ABI for stack frame.  */
 
-typedef enum 
+enum call_abi_t
 {
   CallAbiDefault = 0,		/* Any 'callX' instructions; default stack.  */
   CallAbiCall0Only,		/* Only 'call0' instructions; flat stack.  */
-} call_abi_t;
+};
 
 
 struct ctype_cache