| /* Common hooks of Andes NDS32 cpu for GNU compiler |
| Copyright (C) 2012-2021 Free Software Foundation, Inc. |
| Contributed by Andes Technology Corporation. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify it |
| under the terms of the GNU General Public License as published |
| by the Free Software Foundation; either version 3, or (at your |
| option) any later version. |
| |
| GCC is distributed in the hope that it will be useful, but WITHOUT |
| ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
| License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include "config.h" |
| #include "system.h" |
| #include "coretypes.h" |
| #include "diagnostic-core.h" |
| #include "tm.h" |
| #include "common/common-target.h" |
| #include "common/common-target-def.h" |
| #include "opts.h" |
| #include "flags.h" |
| |
| /* ------------------------------------------------------------------------ */ |
| |
| /* Implement TARGET_HANDLE_OPTION. */ |
| static bool |
| nds32_handle_option (struct gcc_options *opts ATTRIBUTE_UNUSED, |
| struct gcc_options *opts_set ATTRIBUTE_UNUSED, |
| const struct cl_decoded_option *decoded, |
| location_t loc) |
| { |
| size_t code = decoded->opt_index; |
| int value = decoded->value; |
| |
| switch (code) |
| { |
| case OPT_misr_vector_size_: |
| /* Check the valid vector size: 4 or 16. */ |
| if (value != 4 && value != 16) |
| { |
| error_at (loc, "%<-misr-vector-size=%d%> argument must be 4 or 16", value); |
| return false; |
| } |
| |
| return true; |
| |
| case OPT_misr_secure_: |
| /* Check the valid security level: 0 1 2 3. */ |
| if (value < 0 || value > 3) |
| { |
| error_at (loc, "%<-misr-secure=%d%> argument not in between 0 and 3", |
| value); |
| return false; |
| } |
| return true; |
| |
| case OPT_mcache_block_size_: |
| /* Check valid value: 4 8 16 32 64 128 256 512. */ |
| if (exact_log2 (value) < 2 || exact_log2 (value) > 9) |
| { |
| error_at (loc, "for the option %<-mcache-block-size=X%>, the valid X " |
| "must be: 4, 8, 16, 32, 64, 128, 256, or 512"); |
| return false; |
| } |
| |
| return true; |
| |
| default: |
| return true; |
| } |
| } |
| |
| /* ------------------------------------------------------------------------ */ |
| |
| /* Implement TARGET_OPTION_OPTIMIZATION_TABLE. */ |
| static const struct default_options nds32_option_optimization_table[] = |
| { |
| #if TARGET_LINUX_ABI == 0 |
| /* Disable -fdelete-null-pointer-checks by default in ELF toolchain. */ |
| { OPT_LEVELS_ALL, OPT_fdelete_null_pointer_checks, |
| NULL, 0 }, |
| #endif |
| /* Enable -fsched-pressure by default at -O1 and above. */ |
| { OPT_LEVELS_1_PLUS, OPT_fsched_pressure, NULL, 1 }, |
| /* Enable -fomit-frame-pointer by default at all optimization levels. */ |
| { OPT_LEVELS_ALL, OPT_fomit_frame_pointer, NULL, 1 }, |
| /* Enable -mrelax-hint by default at all optimization levels. */ |
| { OPT_LEVELS_ALL, OPT_mrelax_hint, NULL, 1 }, |
| /* Enalbe -malways-align by default at -O1 and above, but not -Os or -Og. */ |
| { OPT_LEVELS_1_PLUS_SPEED_ONLY, OPT_malways_align, NULL, 1 }, |
| /* Enable -mv3push by default at -Os, but it is useless under V2 ISA. */ |
| { OPT_LEVELS_SIZE, OPT_mv3push, NULL, 1 }, |
| |
| { OPT_LEVELS_NONE, 0, NULL, 0 } |
| }; |
| |
| /* ------------------------------------------------------------------------ */ |
| |
| /* Implement TARGET_EXCEPT_UNWIND_INFO. */ |
| static enum unwind_info_type |
| nds32_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED) |
| { |
| if (TARGET_LINUX_ABI) |
| return UI_DWARF2; |
| |
| return UI_SJLJ; |
| } |
| |
| /* ------------------------------------------------------------------------ */ |
| |
| |
| /* Run-time Target Specification. */ |
| |
| /* The default target flags consist of |
| TARGET_CPU_DEFAULT and other MASK_XXX flags. |
| |
| The value of TARGET_CPU_DEFAULT is set by |
| the process of 'configure' and 'make' stage. |
| Please check gcc/config.gcc for more implementation detail. |
| |
| Other MASK_XXX flags are set individually. |
| By default we enable |
| TARGET_16_BIT : Generate 16/32 bit mixed length instruction. |
| TARGET_EXT_PERF : Generate performance extention instrcution. |
| TARGET_EXT_PERF2 : Generate performance extention version 2 instrcution. |
| TARGET_EXT_STRING : Generate string extention instrcution. |
| TARGET_HW_ABS : Generate hardware abs instruction. |
| TARGET_CMOV : Generate conditional move instruction. */ |
| #undef TARGET_DEFAULT_TARGET_FLAGS |
| #define TARGET_DEFAULT_TARGET_FLAGS \ |
| (TARGET_CPU_DEFAULT \ |
| | TARGET_DEFAULT_FPU_ISA \ |
| | TARGET_DEFAULT_FPU_FMA \ |
| | MASK_16_BIT \ |
| | MASK_EXT_PERF \ |
| | MASK_EXT_PERF2 \ |
| | MASK_EXT_STRING \ |
| | MASK_HW_ABS \ |
| | MASK_CMOV) |
| |
| #undef TARGET_HANDLE_OPTION |
| #define TARGET_HANDLE_OPTION nds32_handle_option |
| |
| #undef TARGET_OPTION_OPTIMIZATION_TABLE |
| #define TARGET_OPTION_OPTIMIZATION_TABLE nds32_option_optimization_table |
| |
| |
| /* Defining the Output Assembler Language. */ |
| |
| #undef TARGET_EXCEPT_UNWIND_INFO |
| #define TARGET_EXCEPT_UNWIND_INFO nds32_except_unwind_info |
| |
| /* ------------------------------------------------------------------------ */ |
| |
| struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER; |
| |
| /* ------------------------------------------------------------------------ */ |