1 /* Definitions of target machine needed for option handling for GNU compiler, 2 for IBM RS/6000. 3 Copyright (C) 2010-2019 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 65 PROCESSOR_RS64A, 66 PROCESSOR_MPCCORE, 67 PROCESSOR_CELL, 68 PROCESSOR_PPCA2, 69 PROCESSOR_TITAN 70 }; 71 72 73 /* Types of costly dependences. */ 74 enum rs6000_dependence_cost 75 { 76 max_dep_latency = 1000, 77 no_dep_costly, 78 all_deps_costly, 79 true_store_to_load_dep_costly, 80 store_to_load_dep_costly 81 }; 82 83 /* Types of nop insertion schemes in sched target hook sched_finish. */ 84 enum rs6000_nop_insertion 85 { 86 sched_finish_regroup_exact = 1000, 87 sched_finish_pad_groups, 88 sched_finish_none 89 }; 90 91 /* Dispatch group termination caused by an insn. */ 92 enum group_termination 93 { 94 current_group, 95 previous_group 96 }; 97 98 /* Enumeration to give which calling sequence to use. */ 99 enum rs6000_abi { 100 ABI_NONE, 101 ABI_AIX, /* IBM's AIX, or Linux ELFv1 */ 102 ABI_ELFv2, /* Linux ELFv2 ABI */ 103 ABI_V4, /* System V.4/eabi */ 104 ABI_DARWIN /* Apple's Darwin (OS X kernel) */ 105 }; 106 107 /* Small data support types. */ 108 enum rs6000_sdata_type { 109 SDATA_NONE, /* No small data support. */ 110 SDATA_DATA, /* Just put data in .sbss/.sdata, don't use relocs. */ 111 SDATA_SYSV, /* Use r13 to point to .sdata/.sbss. */ 112 SDATA_EABI /* Use r13 like above, r2 points to .sdata2/.sbss2. */ 113 }; 114 115 /* Type of traceback to use. */ 116 enum rs6000_traceback_type { 117 traceback_default = 0, 118 traceback_none, 119 traceback_part, 120 traceback_full 121 }; 122 123 /* Code model for 64-bit linux. 124 small: 16-bit toc offsets. 125 medium: 32-bit toc offsets, static data and code within 2G of TOC pointer. 126 large: 32-bit toc offsets, no limit on static data and code. */ 127 enum rs6000_cmodel { 128 CMODEL_SMALL, 129 CMODEL_MEDIUM, 130 CMODEL_LARGE 131 }; 132 133 /* Describe which vector unit to use for a given machine mode. The 134 VECTOR_MEM_* and VECTOR_UNIT_* macros assume that Altivec, VSX, and 135 P8_VECTOR are contiguous. */ 136 enum rs6000_vector { 137 VECTOR_NONE, /* Type is not a vector or not supported */ 138 VECTOR_ALTIVEC, /* Use altivec for vector processing */ 139 VECTOR_VSX, /* Use VSX for vector processing */ 140 VECTOR_P8_VECTOR /* Use ISA 2.07 VSX for vector processing */ 141 }; 142 143 /* Where to get the canary for the stack protector. */ 144 enum stack_protector_guard { 145 SSP_TLS, /* per-thread canary in TLS block */ 146 SSP_GLOBAL /* global canary */ 147 }; 148 149 /* No enumeration is defined to index the -mcpu= values (entries in 150 processor_target_table), with the type int being used instead, but 151 we need to distinguish the special "native" value. */ 152 #define RS6000_CPU_OPTION_NATIVE -1 153 154 #endif 155