1/* Definitions of target machine for GNU compiler. 2 MIPS SDE version. 3 Copyright (C) 2003-2015 Free Software Foundation, Inc. 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 3, or (at your option) 10any later version. 11 12GCC is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with GCC; see the file COPYING3. If not see 19<http://www.gnu.org/licenses/>. */ 20 21#undef DRIVER_SELF_SPECS 22#define DRIVER_SELF_SPECS \ 23 /* Set the ISA for the default multilib. */ \ 24 MIPS_DEFAULT_ISA_LEVEL_SPEC, \ 25 \ 26 /* Make sure a -mips option is present. This helps us to pick \ 27 the right multilib, and also makes the later specs easier \ 28 to write. */ \ 29 MIPS_ISA_LEVEL_SPEC, \ 30 \ 31 /* Infer the default float setting from -march. */ \ 32 MIPS_ARCH_FLOAT_SPEC, \ 33 \ 34 /* If no ABI option is specified, infer one from the ISA level \ 35 or -mgp setting. */ \ 36 "%{!mabi=*: %{" MIPS_32BIT_OPTION_SPEC ": -mabi=32;: -mabi=n32}}", \ 37 \ 38 /* Remove a redundant -mfp64 for -mabi=n32; we want the !mfp64 \ 39 multilibs. There's no need to check whether the architecture \ 40 is 64-bit; cc1 will complain if it isn't. */ \ 41 "%{mabi=n32: %<mfp64}", \ 42 \ 43 /* Make sure that an endian option is always present. This makes \ 44 things like LINK_SPEC easier to write. */ \ 45 "%{!EB:%{!EL:%(endian_spec)}}", \ 46 \ 47 /* Configuration-independent MIPS rules. */ \ 48 BASE_DRIVER_SELF_SPECS 49 50/* Use trap rather than break for all but MIPS I ISA. Force -no-mips16, 51 so that MIPS16 assembler code requires an explicit ".set mips16". 52 Very little hand-written MIPS16 assembler exists, and some build 53 systems expect code to be assembled as non-MIPS16 even if the 54 prevailing compiler flags select -mips16. */ 55#undef SUBTARGET_ASM_SPEC 56#define SUBTARGET_ASM_SPEC "\ 57%{!mips1:--trap} \ 58%{mips16:-no-mips16}" 59 60#undef LINK_SPEC 61#define LINK_SPEC "\ 62%(endian_spec) \ 63%{G*} %{mips1} %{mips2} %{mips3} %{mips4} %{mips32*} %{mips64*} \ 64%{shared} \ 65%{mabi=n32:-melf32%{EB:b}%{EL:l}tsmipn32} \ 66%{mabi=64:-melf64%{EB:b}%{EL:l}tsmip} \ 67%{mabi=32:-melf32%{EB:b}%{EL:l}tsmip}" 68 69#undef DEFAULT_SIGNED_CHAR 70#define DEFAULT_SIGNED_CHAR 0 71 72/* Describe how we implement __builtin_eh_return. */ 73 74/* At the moment, nothing appears to use more than 2 EH data registers. 75 The chosen registers must not clash with the return register ($2), 76 EH_RETURN_STACKADJ ($3), or MIPS_EPILOGUE_TEMP ($5), and they must 77 be general MIPS16 registers. Pick $6 and $7. */ 78#undef EH_RETURN_DATA_REGNO 79#define EH_RETURN_DATA_REGNO(N) \ 80 ((N) < 2 ? 7 - (N) : INVALID_REGNUM) 81 82/* Use $5 as a temporary for both MIPS16 and non-MIPS16. */ 83#undef MIPS_EPILOGUE_TEMP_REGNUM 84#define MIPS_EPILOGUE_TEMP_REGNUM \ 85 (cfun->machine->interrupt_handler_p ? K0_REG_NUM : GP_REG_FIRST + 5) 86 87/* Using long will always be right for size_t and ptrdiff_t, since 88 sizeof(long) must equal sizeof(void *), following from the setting 89 of the -mlong64 option. */ 90#undef SIZE_TYPE 91#define SIZE_TYPE "long unsigned int" 92#undef PTRDIFF_TYPE 93#define PTRDIFF_TYPE "long int" 94 95/* Force all .init and .fini entries to be 32-bit, not mips16, so that 96 in a mixed environment they are all the same mode. The crti.asm and 97 crtn.asm files will also be compiled as 32-bit due to the 98 -no-mips16 flag in SUBTARGET_ASM_SPEC above. */ 99#undef CRT_CALL_STATIC_FUNCTION 100#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ 101 asm (SECTION_OP "\n\ 102 .set push\n\ 103 .set nomips16\n\ 104 jal " USER_LABEL_PREFIX #FUNC "\n\ 105 .set pop\n\ 106 " TEXT_SECTION_ASM_OP); 107