1 /* Common hooks for DEC Alpha. 2 Copyright (C) 1992-2017 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3, or (at your option) 9 any later version. 10 11 GCC is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along 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. */ 31 static const struct default_options alpha_option_optimization_table[] = 32 { 33 { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 }, 34 /* Enable redundant extension instructions removal at -O2 and higher. */ 35 { OPT_LEVELS_2_PLUS, OPT_free, NULL, 1 }, 36 { OPT_LEVELS_NONE, 0, NULL, 0 } 37 }; 38 39 /* Implement TARGET_OPTION_INIT_STRUCT. */ 40 41 static void 42 alpha_option_init_struct (struct gcc_options *opts ATTRIBUTE_UNUSED) 43 { 44 #if TARGET_ABI_OPEN_VMS 45 /* Enable section anchors by default. */ 46 opts->x_flag_section_anchors = 1; 47 #endif 48 } 49 50 /* Implement TARGET_HANDLE_OPTION. */ 51 52 static bool 53 alpha_handle_option (struct gcc_options *opts, 54 struct gcc_options *opts_set ATTRIBUTE_UNUSED, 55 const struct cl_decoded_option *decoded, 56 location_t loc) 57 { 58 size_t code = decoded->opt_index; 59 const char *arg = decoded->arg; 60 int value = decoded->value; 61 62 switch (code) 63 { 64 case OPT_mfp_regs: 65 if (value == 0) 66 opts->x_target_flags |= MASK_SOFT_FP; 67 break; 68 69 case OPT_mieee: 70 case OPT_mieee_with_inexact: 71 opts->x_target_flags |= MASK_IEEE_CONFORMANT; 72 break; 73 74 case OPT_mtls_size_: 75 if (value != 16 && value != 32 && value != 64) 76 error_at (loc, "bad value %qs for -mtls-size switch", arg); 77 break; 78 } 79 80 return true; 81 } 82 83 #undef TARGET_DEFAULT_TARGET_FLAGS 84 #define TARGET_DEFAULT_TARGET_FLAGS \ 85 (TARGET_DEFAULT | TARGET_CPU_DEFAULT | TARGET_DEFAULT_EXPLICIT_RELOCS) 86 #undef TARGET_HANDLE_OPTION 87 #define TARGET_HANDLE_OPTION alpha_handle_option 88 89 #undef TARGET_OPTION_INIT_STRUCT 90 #define TARGET_OPTION_INIT_STRUCT alpha_option_init_struct 91 92 #undef TARGET_OPTION_OPTIMIZATION_TABLE 93 #define TARGET_OPTION_OPTIMIZATION_TABLE alpha_option_optimization_table 94 95 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER; 96