1 /* Definitions of target machine needed for option handling for GNU compiler, 2 for IBM RS/6000. 3 Copyright (C) 2010-2021 Free Software Foundation, Inc. 4 Contributed by Michael Meissner (meissner@linux.vnet.ibm.com) 5 6 This file is part of GCC. 7 8 GCC is free software; you can redistribute it and/or modify it 9 under the terms of the GNU General Public License as published 10 by the Free Software Foundation; either version 3, or (at your 11 option) any later version. 12 13 GCC is distributed in the hope that it will be useful, but WITHOUT 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 16 License for more details. 17 18 Under Section 7 of GPL version 3, you are granted additional 19 permissions described in the GCC Runtime Library Exception, version 20 3.1, as published by the Free Software Foundation. 21 22 You should have received a copy of the GNU General Public License and 23 a copy of the GCC Runtime Library Exception along with this program; 24 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 25 <http://www.gnu.org/licenses/>. */ 26 27 #ifndef RS6000_OPTS_H 28 #define RS6000_OPTS_H 29 30 /* Processor type. Order must match cpu attribute in MD file. */ 31 enum processor_type 32 { 33 PROCESSOR_PPC601, 34 PROCESSOR_PPC603, 35 PROCESSOR_PPC604, 36 PROCESSOR_PPC604e, 37 PROCESSOR_PPC620, 38 PROCESSOR_PPC630, 39 40 PROCESSOR_PPC750, 41 PROCESSOR_PPC7400, 42 PROCESSOR_PPC7450, 43 44 PROCESSOR_PPC403, 45 PROCESSOR_PPC405, 46 PROCESSOR_PPC440, 47 PROCESSOR_PPC476, 48 49 PROCESSOR_PPC8540, 50 PROCESSOR_PPC8548, 51 PROCESSOR_PPCE300C2, 52 PROCESSOR_PPCE300C3, 53 PROCESSOR_PPCE500MC, 54 PROCESSOR_PPCE500MC64, 55 PROCESSOR_PPCE5500, 56 PROCESSOR_PPCE6500, 57 58 PROCESSOR_POWER4, 59 PROCESSOR_POWER5, 60 PROCESSOR_POWER6, 61 PROCESSOR_POWER7, 62 PROCESSOR_POWER8, 63 PROCESSOR_POWER9, 64 PROCESSOR_POWER10, 65 66 PROCESSOR_RS64A, 67 PROCESSOR_MPCCORE, 68 PROCESSOR_CELL, 69 PROCESSOR_PPCA2, 70 PROCESSOR_TITAN 71 }; 72 73 74 /* Types of costly dependences. */ 75 enum rs6000_dependence_cost 76 { 77 max_dep_latency = 1000, 78 no_dep_costly, 79 all_deps_costly, 80 true_store_to_load_dep_costly, 81 store_to_load_dep_costly 82 }; 83 84 /* Types of nop insertion schemes in sched target hook sched_finish. */ 85 enum rs6000_nop_insertion 86 { 87 sched_finish_regroup_exact = 1000, 88 sched_finish_pad_groups, 89 sched_finish_none 90 }; 91 92 /* Dispatch group termination caused by an insn. */ 93 enum group_termination 94 { 95 current_group, 96 previous_group 97 }; 98 99 /* Enumeration to give which calling sequence to use. */ 100 enum rs6000_abi { 101 ABI_NONE, 102 ABI_AIX, /* IBM's AIX, or Linux ELFv1 */ 103 ABI_ELFv2, /* Linux ELFv2 ABI */ 104 ABI_V4, /* System V.4/eabi */ 105 ABI_DARWIN /* Apple's Darwin (OS X kernel) */ 106 }; 107 108 /* Small data support types. */ 109 enum rs6000_sdata_type { 110 SDATA_NONE, /* No small data support. */ 111 SDATA_DATA, /* Just put data in .sbss/.sdata, don't use relocs. */ 112 SDATA_SYSV, /* Use r13 to point to .sdata/.sbss. */ 113 SDATA_EABI /* Use r13 like above, r2 points to .sdata2/.sbss2. */ 114 }; 115 116 /* Type of traceback to use. */ 117 enum rs6000_traceback_type { 118 traceback_default = 0, 119 traceback_none, 120 traceback_part, 121 traceback_full 122 }; 123 124 /* Code model for 64-bit linux. 125 small: 16-bit toc offsets. 126 medium: 32-bit toc offsets, static data and code within 2G of TOC pointer. 127 large: 32-bit toc offsets, no limit on static data and code. */ 128 enum rs6000_cmodel { 129 CMODEL_SMALL, 130 CMODEL_MEDIUM, 131 CMODEL_LARGE 132 }; 133 134 /* Describe which vector unit to use for a given machine mode. The 135 VECTOR_MEM_* and VECTOR_UNIT_* macros assume that Altivec, VSX, and 136 P8_VECTOR are contiguous. */ 137 enum rs6000_vector { 138 VECTOR_NONE, /* Type is not a vector or not supported */ 139 VECTOR_ALTIVEC, /* Use altivec for vector processing */ 140 VECTOR_VSX, /* Use VSX for vector processing */ 141 VECTOR_P8_VECTOR /* Use ISA 2.07 VSX for vector processing */ 142 }; 143 144 /* Where to get the canary for the stack protector. */ 145 enum stack_protector_guard { 146 SSP_TLS, /* per-thread canary in TLS block */ 147 SSP_GLOBAL /* global canary */ 148 }; 149 150 /* No enumeration is defined to index the -mcpu= values (entries in 151 processor_target_table), with the type int being used instead, but 152 we need to distinguish the special "native" value. */ 153 #define RS6000_CPU_OPTION_NATIVE -1 154 155 #endif 156