1/* Common hooks for DEC Alpha.
2   Copyright (C) 1992-2020 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 3, or (at your option)
9any later version.
10
11GCC is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with GCC; see the file COPYING3.  If not see
18<http://www.gnu.org/licenses/>.  */
19
20#include "config.h"
21#include "system.h"
22#include "coretypes.h"
23#include "diagnostic-core.h"
24#include "tm.h"
25#include "common/common-target.h"
26#include "common/common-target-def.h"
27#include "opts.h"
28#include "flags.h"
29
30/* Implement TARGET_OPTION_OPTIMIZATION_TABLE.  */
31static const struct default_options alpha_option_optimization_table[] =
32  {
33    /* Enable redundant extension instructions removal at -O2 and higher.  */
34    { OPT_LEVELS_2_PLUS, OPT_free, NULL, 1 },
35    { OPT_LEVELS_NONE, 0, NULL, 0 }
36  };
37
38/* Implement TARGET_OPTION_INIT_STRUCT.  */
39
40static void
41alpha_option_init_struct (struct gcc_options *opts ATTRIBUTE_UNUSED)
42{
43#if TARGET_ABI_OPEN_VMS
44  /* Enable section anchors by default.  */
45  opts->x_flag_section_anchors = 1;
46#endif
47}
48
49/* Implement TARGET_HANDLE_OPTION.  */
50
51static bool
52alpha_handle_option (struct gcc_options *opts,
53		     struct gcc_options *opts_set ATTRIBUTE_UNUSED,
54		     const struct cl_decoded_option *decoded,
55		     location_t loc)
56{
57  size_t code = decoded->opt_index;
58  const char *arg = decoded->arg;
59  int value = decoded->value;
60
61  switch (code)
62    {
63    case OPT_mfp_regs:
64      if (value == 0)
65	opts->x_target_flags |= MASK_SOFT_FP;
66      break;
67
68    case OPT_mieee:
69    case OPT_mieee_with_inexact:
70      opts->x_target_flags |= MASK_IEEE_CONFORMANT;
71      break;
72
73    case OPT_mtls_size_:
74      if (value != 16 && value != 32 && value != 64)
75	error_at (loc, "bad value %qs for %<-mtls-size%> switch", arg);
76      break;
77    }
78
79  return true;
80}
81
82#undef TARGET_DEFAULT_TARGET_FLAGS
83#define TARGET_DEFAULT_TARGET_FLAGS \
84  (TARGET_DEFAULT | TARGET_CPU_DEFAULT | TARGET_DEFAULT_EXPLICIT_RELOCS)
85#undef TARGET_HANDLE_OPTION
86#define TARGET_HANDLE_OPTION alpha_handle_option
87
88#undef TARGET_OPTION_INIT_STRUCT
89#define TARGET_OPTION_INIT_STRUCT alpha_option_init_struct
90
91#undef TARGET_OPTION_OPTIMIZATION_TABLE
92#define TARGET_OPTION_OPTIMIZATION_TABLE alpha_option_optimization_table
93
94struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;
95