1 /* Common hooks of Andes NDS32 cpu for GNU compiler
2 Copyright (C) 2012-2018 Free Software Foundation, Inc.
3 Contributed by Andes Technology Corporation.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published
9 by the Free Software Foundation; either version 3, or (at your
10 option) any later version.
12 GCC is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
23 #include "coretypes.h"
24 #include "diagnostic-core.h"
26 #include "common/common-target.h"
27 #include "common/common-target-def.h"
31 /* ------------------------------------------------------------------------ */
33 /* Implement TARGET_HANDLE_OPTION. */
35 nds32_handle_option (struct gcc_options
*opts ATTRIBUTE_UNUSED
,
36 struct gcc_options
*opts_set ATTRIBUTE_UNUSED
,
37 const struct cl_decoded_option
*decoded
,
40 size_t code
= decoded
->opt_index
;
41 int value
= decoded
->value
;
45 case OPT_misr_vector_size_
:
46 /* Check the valid vector size: 4 or 16. */
47 if (value
!= 4 && value
!= 16)
49 error_at (loc
, "for the option -misr-vector-size=X, the valid X "
56 case OPT_misr_secure_
:
57 /* Check the valid security level: 0 1 2 3. */
58 if (value
< 0 || value
> 3)
60 error_at (loc
, "for the option -misr-secure=X, the valid X "
61 "must be: 0, 1, 2, or 3");
66 case OPT_mcache_block_size_
:
67 /* Check valid value: 4 8 16 32 64 128 256 512. */
68 if (exact_log2 (value
) < 2 || exact_log2 (value
) > 9)
70 error_at (loc
, "for the option -mcache-block-size=X, the valid X "
71 "must be: 4, 8, 16, 32, 64, 128, 256, or 512");
82 /* ------------------------------------------------------------------------ */
84 /* Implement TARGET_OPTION_OPTIMIZATION_TABLE. */
85 static const struct default_options nds32_option_optimization_table
[] =
87 #if TARGET_LINUX_ABI == 0
88 /* Disable -fdelete-null-pointer-checks by default in ELF toolchain. */
89 { OPT_LEVELS_ALL
, OPT_fdelete_null_pointer_checks
,
92 /* Enable -fsched-pressure by default at -O1 and above. */
93 { OPT_LEVELS_1_PLUS
, OPT_fsched_pressure
, NULL
, 1 },
94 /* Enable -fomit-frame-pointer by default at all optimization levels. */
95 { OPT_LEVELS_ALL
, OPT_fomit_frame_pointer
, NULL
, 1 },
96 /* Enable -mrelax-hint by default at all optimization levels. */
97 { OPT_LEVELS_ALL
, OPT_mrelax_hint
, NULL
, 1 },
98 /* Enable -mv3push by default at -Os, but it is useless under V2 ISA. */
99 { OPT_LEVELS_SIZE
, OPT_mv3push
, NULL
, 1 },
101 { OPT_LEVELS_NONE
, 0, NULL
, 0 }
104 /* ------------------------------------------------------------------------ */
106 /* Implement TARGET_EXCEPT_UNWIND_INFO. */
107 static enum unwind_info_type
108 nds32_except_unwind_info (struct gcc_options
*opts ATTRIBUTE_UNUSED
)
110 if (TARGET_LINUX_ABI
)
116 /* ------------------------------------------------------------------------ */
119 /* Run-time Target Specification. */
121 /* The default target flags consist of
122 TARGET_CPU_DEFAULT and other MASK_XXX flags.
124 The value of TARGET_CPU_DEFAULT is set by
125 the process of 'configure' and 'make' stage.
126 Please check gcc/config.gcc for more implementation detail.
128 Other MASK_XXX flags are set individually.
130 TARGET_16_BIT : Generate 16/32 bit mixed length instruction.
131 TARGET_EXT_PERF : Generate performance extention instrcution.
132 TARGET_EXT_PERF2 : Generate performance extention version 2 instrcution.
133 TARGET_EXT_STRING : Generate string extention instrcution.
134 TARGET_HW_ABS : Generate hardware abs instruction.
135 TARGET_CMOV : Generate conditional move instruction. */
136 #undef TARGET_DEFAULT_TARGET_FLAGS
137 #define TARGET_DEFAULT_TARGET_FLAGS \
138 (TARGET_CPU_DEFAULT \
139 | TARGET_DEFAULT_FPU_ISA \
140 | TARGET_DEFAULT_FPU_FMA \
148 #undef TARGET_HANDLE_OPTION
149 #define TARGET_HANDLE_OPTION nds32_handle_option
151 #undef TARGET_OPTION_OPTIMIZATION_TABLE
152 #define TARGET_OPTION_OPTIMIZATION_TABLE nds32_option_optimization_table
155 /* Defining the Output Assembler Language. */
157 #undef TARGET_EXCEPT_UNWIND_INFO
158 #define TARGET_EXCEPT_UNWIND_INFO nds32_except_unwind_info
160 /* ------------------------------------------------------------------------ */
162 struct gcc_targetm_common targetm_common
= TARGETM_COMMON_INITIALIZER
;
164 /* ------------------------------------------------------------------------ */