m68k.opt revision 1.9
1; Options for the Motorola 68000 port of the compiler. 2 3; Copyright (C) 2005-2018 Free Software Foundation, Inc. 4; 5; This file is part of GCC. 6; 7; GCC is free software; you can redistribute it and/or modify it under 8; the terms of the GNU General Public License as published by the Free 9; Software Foundation; either version 3, or (at your option) any later 10; version. 11; 12; GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13; WARRANTY; without even the implied warranty of MERCHANTABILITY or 14; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15; for more details. 16; 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/>. 20 21HeaderInclude 22config/m68k/m68k-opts.h 23 24; Specify the identification number of the library being built. 25Variable 26const char *m68k_library_id_string = "_current_shared_library_a5_offset_" 27 28m5200 29Target RejectNegative Alias(mcpu=, 5206) 30Generate code for a 520X. 31 32m5206e 33Target RejectNegative Alias(mcpu=, 5206e) 34Generate code for a 5206e. 35 36m528x 37Target RejectNegative Alias(mcpu=, 528x) 38Generate code for a 528x. 39 40m5307 41Target RejectNegative Alias(mcpu=, 5307) 42Generate code for a 5307. 43 44m5407 45Target RejectNegative Alias(mcpu=, 5407) 46Generate code for a 5407. 47 48m68000 49Target RejectNegative Alias(mcpu=, 68000) 50Generate code for a 68000. 51 52m68010 53Target RejectNegative Alias(mcpu=, 68010) 54Generate code for a 68010. 55 56m68020 57Target RejectNegative Alias(mcpu=, 68020) 58Generate code for a 68020. 59 60m68020-40 61Target RejectNegative 62Generate code for a 68040, without any new instructions. 63 64m68020-60 65Target RejectNegative 66Generate code for a 68060, without any new instructions. 67 68m68030 69Target RejectNegative Alias(mcpu=, 68030) 70Generate code for a 68030. 71 72m68040 73Target RejectNegative Alias(mcpu=, 68040) 74Generate code for a 68040. 75 76m68060 77Target RejectNegative Alias(mcpu=, 68060) 78Generate code for a 68060. 79 80m68302 81Target RejectNegative Alias(mcpu=, 68302) 82Generate code for a 68302. 83 84m68332 85Target RejectNegative Alias(mcpu=, 68332) 86Generate code for a 68332. 87 88; Has no effect on gcc 89m68851 90Target 91Generate code for a 68851. 92 93m68881 94Target RejectNegative Mask(HARD_FLOAT) 95Generate code that uses 68881 floating-point instructions. 96 97malign-int 98Target Report Mask(ALIGN_INT) 99Align variables on a 32-bit boundary. 100 101march= 102Target RejectNegative Joined Enum(m68k_isa) Var(m68k_arch_option) 103Specify the name of the target architecture. 104 105mbitfield 106Target Report Mask(BITFIELD) 107Use the bit-field instructions. 108 109mc68000 110Target RejectNegative Alias(mcpu=, 68000) 111Generate code for a 68000. 112 113mc68020 114Target RejectNegative Alias(mcpu=, 68020) 115Generate code for a 68020. 116 117mcfv4e 118Target RejectNegative Alias(mcpu=, 547x) 119Generate code for a ColdFire v4e. 120 121mcpu= 122Target RejectNegative Joined Enum(target_device) Var(m68k_cpu_option) Init(unk_device) 123Specify the target CPU. 124 125mcpu32 126Target RejectNegative Alias(mcpu=, 68332) 127Generate code for a cpu32. 128 129mdiv 130Target Report Mask(CF_HWDIV) 131Use hardware division instructions on ColdFire. 132 133mfidoa 134Target RejectNegative 135Generate code for a Fido A. 136 137mhard-float 138Target RejectNegative Mask(HARD_FLOAT) 139Generate code which uses hardware floating point instructions. 140 141mid-shared-library 142Target Report Mask(ID_SHARED_LIBRARY) 143Enable ID based shared library. 144 145mlong-jump-table-offsets 146Target Report RejectNegative Mask(LONG_JUMP_TABLE_OFFSETS) 147Use 32-bit offsets in jump tables rather than 16-bit offsets. 148 149mnobitfield 150Target RejectNegative InverseMask(BITFIELD) 151Do not use the bit-field instructions. 152 153mnortd 154Target RejectNegative InverseMask(RTD) 155Use normal calling convention. 156 157mnoshort 158Target RejectNegative InverseMask(SHORT) 159Consider type 'int' to be 32 bits wide. 160 161mpcrel 162Target Report Mask(PCREL) 163Generate pc-relative code. 164 165mrtd 166Target Report Mask(RTD) 167Use different calling convention using 'rtd'. 168 169msep-data 170Target Report Mask(SEP_DATA) 171Enable separate data segment. 172 173mshared-library-id= 174Target RejectNegative Joined UInteger 175ID of shared library to build. 176 177mshort 178Target Report Mask(SHORT) 179Consider type 'int' to be 16 bits wide. 180 181msoft-float 182Target RejectNegative InverseMask(HARD_FLOAT) 183Generate code with library calls for floating point. 184 185mstrict-align 186Target Report Mask(STRICT_ALIGNMENT) 187Do not use unaligned memory references. 188 189mtune= 190Target RejectNegative Joined Enum(uarch_type) Var(m68k_tune_option) Init(unk_arch) 191Tune for the specified target CPU or architecture. 192 193mxgot 194Target Report Mask(XGOT) 195Support more than 8192 GOT entries on ColdFire. 196 197mxtls 198Target Report Mask(XTLS) 199Support TLS segment larger than 64K. 200