| /* Definitions of target machine for GNU compiler. |
| MIPS SDE version. |
| Copyright (C) 2003-2022 Free Software Foundation, Inc. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3, or (at your option) |
| any later version. |
| |
| GCC is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #undef DRIVER_SELF_SPECS |
| #define DRIVER_SELF_SPECS \ |
| /* Set the ISA for the default multilib. */ \ |
| MIPS_DEFAULT_ISA_LEVEL_SPEC, \ |
| \ |
| /* Make sure a -mips option is present. This helps us to pick \ |
| the right multilib, and also makes the later specs easier \ |
| to write. */ \ |
| MIPS_ISA_LEVEL_SPEC, \ |
| \ |
| /* Infer the default float setting from -march. */ \ |
| MIPS_ARCH_FLOAT_SPEC, \ |
| \ |
| /* If no ABI option is specified, infer one from the ISA level \ |
| or -mgp setting. */ \ |
| "%{!mabi=*: %{" MIPS_32BIT_OPTION_SPEC ": -mabi=32;: -mabi=n32}}", \ |
| \ |
| /* Remove a redundant -mfp64 for -mabi=n32; we want the !mfp64 \ |
| multilibs. There's no need to check whether the architecture \ |
| is 64-bit; cc1 will complain if it isn't. */ \ |
| "%{mabi=n32: %<mfp64}", \ |
| \ |
| /* Make sure that an endian option is always present. This makes \ |
| things like LINK_SPEC easier to write. */ \ |
| "%{!EB:%{!EL:%(endian_spec)}}", \ |
| \ |
| /* Configuration-independent MIPS rules. */ \ |
| BASE_DRIVER_SELF_SPECS |
| |
| /* Use trap rather than break for all but MIPS I ISA. Force -no-mips16, |
| so that MIPS16 assembler code requires an explicit ".set mips16". |
| Very little hand-written MIPS16 assembler exists, and some build |
| systems expect code to be assembled as non-MIPS16 even if the |
| prevailing compiler flags select -mips16. */ |
| #undef SUBTARGET_ASM_SPEC |
| #define SUBTARGET_ASM_SPEC "\ |
| %{!mips1:--trap} \ |
| %{mips16:-no-mips16}" |
| |
| #undef LINK_SPEC |
| #define LINK_SPEC "\ |
| %(endian_spec) \ |
| %{G*} %{mips1} %{mips2} %{mips3} %{mips4} %{mips32*} %{mips64*} \ |
| %{shared} \ |
| %{mabi=n32:-melf32%{EB:b}%{EL:l}tsmipn32} \ |
| %{mabi=64:-melf64%{EB:b}%{EL:l}tsmip} \ |
| %{mabi=32:-melf32%{EB:b}%{EL:l}tsmip}" |
| |
| #undef DEFAULT_SIGNED_CHAR |
| #define DEFAULT_SIGNED_CHAR 0 |
| |
| /* Describe how we implement __builtin_eh_return. */ |
| |
| /* At the moment, nothing appears to use more than 2 EH data registers. |
| The chosen registers must not clash with the return register ($2), |
| EH_RETURN_STACKADJ ($3), or MIPS_EPILOGUE_TEMP ($5), and they must |
| be general MIPS16 registers. Pick $6 and $7. */ |
| #undef EH_RETURN_DATA_REGNO |
| #define EH_RETURN_DATA_REGNO(N) \ |
| ((N) < 2 ? 7 - (N) : INVALID_REGNUM) |
| |
| /* Use $5 as a temporary for both MIPS16 and non-MIPS16. */ |
| #undef MIPS_EPILOGUE_TEMP_REGNUM |
| #define MIPS_EPILOGUE_TEMP_REGNUM \ |
| (cfun->machine->interrupt_handler_p ? K0_REG_NUM : GP_REG_FIRST + 5) |
| |
| /* Using long will always be right for size_t and ptrdiff_t, since |
| sizeof(long) must equal sizeof(void *), following from the setting |
| of the -mlong64 option. */ |
| #undef SIZE_TYPE |
| #define SIZE_TYPE "long unsigned int" |
| #undef PTRDIFF_TYPE |
| #define PTRDIFF_TYPE "long int" |
| |
| /* Force all .init and .fini entries to be 32-bit, not mips16, so that |
| in a mixed environment they are all the same mode. The crti.asm and |
| crtn.asm files will also be compiled as 32-bit due to the |
| -no-mips16 flag in SUBTARGET_ASM_SPEC above. */ |
| #undef CRT_CALL_STATIC_FUNCTION |
| #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ |
| asm (SECTION_OP "\n\ |
| .set push\n\ |
| .set nomips16\n\ |
| jal " USER_LABEL_PREFIX #FUNC "\n\ |
| .set pop\n\ |
| " TEXT_SECTION_ASM_OP); |