1 /* Common hooks for pdp11. 2 Copyright (C) 1994-2015 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 "tm.h" 24 #include "common/common-target.h" 25 #include "common/common-target-def.h" 26 #include "opts.h" 27 #include "flags.h" 28 29 /* Implement TARGET_OPTION_OPTIMIZATION_TABLE. */ 30 31 static const struct default_options pdp11_option_optimization_table[] = 32 { 33 { OPT_LEVELS_3_PLUS, OPT_fomit_frame_pointer, NULL, 1 }, 34 { OPT_LEVELS_NONE, 0, NULL, 0 } 35 }; 36 37 /* Implement TARGET_HANDLE_OPTION. */ 38 39 static bool 40 pdp11_handle_option (struct gcc_options *opts, 41 struct gcc_options *opts_set ATTRIBUTE_UNUSED, 42 const struct cl_decoded_option *decoded, 43 location_t loc ATTRIBUTE_UNUSED) 44 { 45 size_t code = decoded->opt_index; 46 47 switch (code) 48 { 49 case OPT_m10: 50 opts->x_target_flags &= ~(MASK_40 | MASK_45); 51 return true; 52 53 default: 54 return true; 55 } 56 } 57 58 /* Implement TARGET_OPTION_INIT_STRUCT. */ 59 60 static void 61 pdp11_option_init_struct (struct gcc_options *opts) 62 { 63 opts->x_flag_finite_math_only = 0; 64 opts->x_flag_trapping_math = 0; 65 opts->x_flag_signaling_nans = 0; 66 } 67 68 #undef TARGET_DEFAULT_TARGET_FLAGS 69 #define TARGET_DEFAULT_TARGET_FLAGS \ 70 (MASK_FPU | MASK_45 | TARGET_UNIX_ASM_DEFAULT) 71 #undef TARGET_HANDLE_OPTION 72 #define TARGET_HANDLE_OPTION pdp11_handle_option 73 #undef TARGET_OPTION_OPTIMIZATION_TABLE 74 #define TARGET_OPTION_OPTIMIZATION_TABLE pdp11_option_optimization_table 75 #undef TARGET_OPTION_INIT_STRUCT 76 #define TARGET_OPTION_INIT_STRUCT pdp11_option_init_struct 77 78 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER; 79