/* Definitions for MIPS varients running FreeBSD with ELF format Copyright (C) 2008 Free Software Foundation, Inc. Continued by David O'Brien 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 2, 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 COPYING. If not, write to the Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ /* $FreeBSD$ */ /* This defines which switch letters take arguments. -G is a MIPS special. */ #undef SWITCH_TAKES_ARG #define SWITCH_TAKES_ARG(CHAR) \ (FBSD_SWITCH_TAKES_ARG (CHAR) \ || (CHAR) == 'R' \ || (CHAR) == 'G') #undef SUBTARGET_EXTRA_SPECS /* mips.h bogusly defines it. */ #define SUBTARGET_EXTRA_SPECS \ { "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER}, \ { "fbsd_link_spec", FBSD_LINK_SPEC } /* config/mips/mips.h defines CC1_SPEC, but gives us an "out" with SUBTARGET_CC1_SPEC. */ #undef SUBTARGET_CC1_SPEC #define SUBTARGET_CC1_SPEC "%{profile:-p}" /* Provide a LINK_SPEC appropriate for FreeBSD. Here we provide support for the special GCC options -static and -shared, which allow us to link things in one of these three modes by applying the appropriate combinations of options at link-time. We like to support here for as many of the other GNU linker options as possible. But I don't have the time to search for those flags. I am sure how to add support for -soname shared_object_name. H.J. When the -shared link option is used a final link is not being done. */ #define FBSD_LINK_SPEC "\ %{p:%nconsider using `-pg' instead of `-p' with gprof(1) } \ %{v:-V} \ %{assert*} %{R*} %{rpath*} %{defsym*} \ %{shared:-Bshareable %{h*} %{soname*}} \ %{!shared: \ %{!static: \ %{rdynamic: -export-dynamic} \ %{!dynamic-linker:-dynamic-linker %(fbsd_dynamic_linker) }} \ %{static:-Bstatic}} \ %{symbolic:-Bsymbolic} " #undef LINK_SPEC #define LINK_SPEC "\ %{G*} %{mips1} %{mips2} %{mips3} %{mips4} %{mips32} %{mips32r2} %{mips64} \ %{bestGnum} %{call_shared} %{no_archive} %{exact_version} \ %(fbsd_link_spec) " #if 0 %(endian_spec) #endif /* Reset our STARTFILE_SPEC which was properly set in config/freebsd.h but trashed by config/mips/elf.h. */ #undef STARTFILE_SPEC #define STARTFILE_SPEC FBSD_STARTFILE_SPEC /* Provide an ENDFILE_SPEC appropriate for FreeBSD/i386. */ #undef ENDFILE_SPEC #define ENDFILE_SPEC FBSD_ENDFILE_SPEC /* Reset our LIB_SPEC which was properly set in config/freebsd.h but trashed by config/mips/elf.h. */ #undef LIB_SPEC #define LIB_SPEC FBSD_LIB_SPEC /* config/mips/mips.h defines CPP_SPEC, and it expects SUBTARGET_CPP_SPEC. */ #undef SUBTARGET_CPP_SPEC #define SUBTARGET_CPP_SPEC FBSD_CPP_SPEC /************************[ Target stuff ]***********************************/ /* Define the actual types of some ANSI-mandated types. Needs to agree with . GCC defaults come from c-decl.c, c-common.c, and config//.h. */ #if TARGET_ENDIAN_DEFAULT != 0 #define TARGET_VERSION fprintf (stderr, " (FreeBSD/mips)"); #else #define TARGET_VERSION fprintf (stderr, " (FreeBSD/mipsel)"); #endif /* The generic MIPS TARGET_CPU_CPP_BUILTINS are incorrect for FreeBSD. Specifically, they define too many namespace-invasive macros. Override them here. Note this is structured for easy comparison to the version in mips.h. */ #undef TARGET_CPU_CPP_BUILTINS #define TARGET_CPU_CPP_BUILTINS() \ do \ { \ builtin_assert ("machine=mips"); \ builtin_assert ("cpu=mips"); \ builtin_define ("__mips__"); \ \ if (TARGET_64BIT) \ builtin_define ("__mips64__"); \ \ if (TARGET_FLOAT64) \ builtin_define ("__mips_fpr=64"); \ else \ builtin_define ("__mips_fpr=32"); \ \ if (TARGET_MIPS16) \ builtin_define ("__mips16"); \ \ MIPS_CPP_SET_PROCESSOR ("_MIPS_ARCH", mips_arch_info); \ MIPS_CPP_SET_PROCESSOR ("_MIPS_TUNE", mips_tune_info); \ \ if (ISA_MIPS3) \ builtin_define ("__mips=3"); \ else if (ISA_MIPS4) \ builtin_define ("__mips=4"); \ else if (ISA_MIPS32) \ { \ builtin_define ("__mips=32"); \ builtin_define ("__mips_isa_rev=1"); \ } \ else if (ISA_MIPS32R2) \ { \ builtin_define ("__mips=32"); \ builtin_define ("__mips_isa_rev=2"); \ } \ else if (ISA_MIPS64) \ { \ builtin_define ("__mips=64"); \ builtin_define ("__mips_isa_rev=1"); \ } \ \ if (TARGET_HARD_FLOAT) \ builtin_define ("__mips_hard_float"); \ else if (TARGET_SOFT_FLOAT) \ builtin_define ("__mips_soft_float"); \ \ if (TARGET_SINGLE_FLOAT) \ builtin_define ("__mips_single_float"); \ \ if (TARGET_BIG_ENDIAN) \ builtin_define ("__MIPSEB__"); \ else \ builtin_define ("__MIPSEL__"); \ \ /* No language dialect defines. */ \ \ if (mips_abi == ABI_EABI) \ builtin_define ("__mips_eabi"); \ else if (mips_abi == ABI_N32) \ builtin_define ("__mips_n32"); \ else if (mips_abi == ABI_64) \ builtin_define ("__mips_n64"); \ else if (mips_abi == ABI_O64) \ builtin_define ("__mips_o64"); \ else \ builtin_define ("__mips_o32"); \ \ if (TARGET_ABICALLS) \ builtin_define ("__ABICALLS__"); \ } \ while (0) /* Default to the mips32 ISA */ #undef DRIVER_SELF_SPECS #define DRIVER_SELF_SPECS \ "%{!march=*: -march=mips32}" #if 0 "%{!EB:%{!EL:%(endian_spec)}}", #endif #if 0 /* Don't default to pcc-struct-return, we want to retain compatibility with older gcc versions AND pcc-struct-return is nonreentrant. (even though the SVR4 ABI for the i386 says that records and unions are returned in memory). */ #undef DEFAULT_PCC_STRUCT_RETURN #define DEFAULT_PCC_STRUCT_RETURN 0 #endif /************************[ Assembler stuff ]********************************/ #undef SUBTARGET_ASM_SPEC #define SUBTARGET_ASM_SPEC \ "%{!mno-abicalls: %{!fno-PIC:%{!fno-pic:-KPIC}}}" /* -G is incompatible with -KPIC which is the default, so only allow objects in the small data section if the user explicitly asks for it. */ #undef MIPS_DEFAULT_GVALUE #define MIPS_DEFAULT_GVALUE 0 /* If defined, a C expression whose value is a string containing the assembler operation to identify the following data as uninitialized global data. If not defined, and neither `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined, uninitialized global data will be output in the data section if `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be used. */ #undef BSS_SECTION_ASM_OP #define BSS_SECTION_ASM_OP "\t.section\t.bss" /* Like `ASM_OUTPUT_BSS' except takes the required alignment as a separate, explicit argument. If you define this macro, it is used in place of `ASM_OUTPUT_BSS', and gives you more flexibility in handling the required alignment of the variable. The alignment is specified as the number of bits. Try to use function `asm_output_aligned_bss' defined in file `varasm.c' when defining this macro. */ #undef ASM_OUTPUT_ALIGNED_BSS #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) /* Standard AT&T UNIX 'as' local label spelling. */ #undef LOCAL_LABEL_PREFIX #define LOCAL_LABEL_PREFIX "." /************************[ Debugger stuff ]*********************************/