181 lines
5.7 KiB
C
181 lines
5.7 KiB
C
/* Definitions of target machine for GNU compiler, FreeBSD/arm version.
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Copyright (C) 2002-2015 Free Software Foundation, Inc.
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Contributed by Wasabi Systems, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 3, or (at your
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option) any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#undef SUBTARGET_CPP_SPEC
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#define SUBTARGET_CPP_SPEC FBSD_CPP_SPEC
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#undef SUBTARGET_EXTRA_SPECS
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#define SUBTARGET_EXTRA_SPECS \
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{ "subtarget_extra_asm_spec", SUBTARGET_EXTRA_ASM_SPEC }, \
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{ "subtarget_asm_float_spec", SUBTARGET_ASM_FLOAT_SPEC }, \
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{ "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER }
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#undef SUBTARGET_EXTRA_ASM_SPEC
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#define SUBTARGET_EXTRA_ASM_SPEC \
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"%{mabi=apcs-gnu|mabi=atpcs:-meabi=gnu;:-meabi=5} " TARGET_FIX_V4BX_SPEC " \
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%{fpic|fpie:-k} %{fPIC|fPIE:-k}"
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#undef SUBTARGET_ASM_FLOAT_SPEC
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#ifdef TARGET_FREEBSD_ARM_HARD_FLOAT
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/* Default to full vfp if we build for arm*hf. */
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#define SUBTARGET_ASM_FLOAT_SPEC "%{!mfpu=*:-mfpu=vfp}"
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#else
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#define SUBTARGET_ASM_FLOAT_SPEC "%{!mfpu=*:-mfpu=softvfp}"
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#endif
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#undef LINK_SPEC
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#define LINK_SPEC " \
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%{p:%nconsider using `-pg' instead of `-p' with gprof (1) } \
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%{v:-V} \
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%{assert*} %{R*} %{rpath*} %{defsym*} \
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%{shared:-Bshareable %{h*} %{soname*}} \
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%{!shared: \
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%{!static: \
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%{rdynamic:-export-dynamic} \
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%{!dynamic-linker:-dynamic-linker %(fbsd_dynamic_linker) }} \
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%{static:-Bstatic}} \
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%{!static:--hash-style=both --enable-new-dtags} \
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%{symbolic:-Bsymbolic} \
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-X %{mbig-endian:-EB} %{mlittle-endian:-EL}"
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/* TARGET_BIG_ENDIAN_DEFAULT is set in
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config.gcc for big endian configurations. */
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#if TARGET_BIG_ENDIAN_DEFAULT
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#define TARGET_ENDIAN_DEFAULT MASK_BIG_END
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#define TARGET_ENDIAN_OPTION "mbig-endian"
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#define TARGET_LINKER_EMULATION "armelfb_fbsd"
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#else
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#define TARGET_ENDIAN_DEFAULT 0
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#define TARGET_ENDIAN_OPTION "mlittle-endian"
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#define TARGET_LINKER_EMULATION "armelf_fbsd"
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#endif
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#undef SUBTARGET_EXTRA_LINK_SPEC
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#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION " -p"
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#undef TARGET_OS_CPP_BUILTINS
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#define TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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FBSD_TARGET_OS_CPP_BUILTINS (); \
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TARGET_BPABI_CPP_BUILTINS (); \
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} \
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while (false)
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/* We default to a soft-float ABI so that binaries can run on all
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target hardware. */
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#undef TARGET_DEFAULT_FLOAT_ABI
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#ifdef TARGET_FREEBSD_ARM_HARD_FLOAT
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#define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_HARD
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#else
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#define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_SOFT
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#endif
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#undef ARM_DEFAULT_ABI
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/* AACPS_LINUX has access to kernel atomic ops while we don't.
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But AACPS defaults to short_enums. */
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#define ARM_DEFAULT_ABI ARM_ABI_AAPCS_LINUX
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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT (MASK_INTERWORK | TARGET_ENDIAN_DEFAULT)
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/* We do not have any MULTILIB_OPTIONS specified, so there are no
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MULTILIB_DEFAULTS. */
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#undef MULTILIB_DEFAULTS
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/* Use the AAPCS type for wchar_t, override the one from config/freebsd.h. */
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#undef WCHAR_TYPE
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#define WCHAR_TYPE "unsigned int"
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#undef WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE BITS_PER_WORD
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#if defined (TARGET_FREEBSD_ARMv6)
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#undef SUBTARGET_CPU_DEFAULT
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#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm1176jzs
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#else
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#undef SUBTARGET_CPU_DEFAULT
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#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm9
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#endif
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#define SUBTARGET_OVERRIDE_OPTIONS \
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do { \
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if (unaligned_access) \
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unaligned_access = 0; \
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} while (0)
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#undef MAX_SYNC_LIBFUNC_SIZE
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#define MAX_SYNC_LIBFUNC_SIZE 4 /* UNITS_PER_WORD not defined yet. */
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/* FreeBSD does its profiling differently to the Acorn compiler. We
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don't need a word following the mcount call; and to skip it
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requires either an assembly stub or use of fomit-frame-pointer when
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compiling the profiling functions. Since we break Acorn CC
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compatibility below a little more won't hurt. */
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#undef ARM_FUNCTION_PROFILER
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#define ARM_FUNCTION_PROFILER(STREAM,LABELNO) \
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{ \
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asm_fprintf (STREAM, "\tmov\t%Rip, %Rlr\n"); \
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asm_fprintf (STREAM, "\tbl\t__mcount%s\n", \
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(TARGET_ARM && NEED_PLT_RELOC) \
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? "(PLT)" : ""); \
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}
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/* Clear the instruction cache from `BEG' to `END'. This makes a
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call to the ARM_SYNC_ICACHE architecture specific syscall. */
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#define CLEAR_INSN_CACHE(BEG, END) \
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do \
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{ \
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extern int sysarch (int number, void *args); \
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struct \
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{ \
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unsigned int addr; \
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int len; \
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} s; \
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s.addr = (unsigned int) (BEG); \
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s.len = (END) - (BEG); \
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(void) sysarch (0, &s); \
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} \
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while (0)
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/* This is how we tell the assembler that two symbols have the same value. */
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#define ASM_OUTPUT_DEF(FILE, NAME1, NAME2) \
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do \
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{ \
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assemble_name (FILE, NAME1); \
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fputs (" = ", FILE); \
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assemble_name (FILE, NAME2); \
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fputc ('\n', FILE); \
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} \
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while (0)
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/* Add .note.GNU-stack. */
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#undef NEED_INDICATE_EXEC_STACK
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#define NEED_INDICATE_EXEC_STACK 1
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#define ARM_TARGET2_DWARF_FORMAT (DW_EH_PE_pcrel | DW_EH_PE_indirect)
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