141 lines
4.3 KiB
C
141 lines
4.3 KiB
C
/* Target macros for arc*-*-linux targets.
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Copyright (C) 2017-2021 Free Software Foundation, 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
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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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/* Enable DWARF 2 exceptions. */
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#undef DWARF2_UNWIND_INFO
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#define DWARF2_UNWIND_INFO 1
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#define TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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GNU_USER_TARGET_OS_CPP_BUILTINS (); \
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} \
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while (0)
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#define GLIBC_DYNAMIC_LINKER \
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"/lib/ld-linux-arc%{mbig-endian:eb}%{mcpu=arc700:700}.so.2"
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#define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
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/* Note that the default is to link against dynamic libraries, if they are
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available. Override with -static. */
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#undef LINK_SPEC
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#define LINK_SPEC "%{h*} \
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%{static:-Bstatic} \
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%{shared:-shared} \
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%{symbolic:-Bsymbolic} \
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%{!static: \
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%{rdynamic:-export-dynamic} \
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%{!shared:-dynamic-linker " GNU_USER_DYNAMIC_LINKER "}} \
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-X \
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%{mbig-endian:-EB} %{EB} %{EL} \
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%{!z:-z max-page-size=0x2000 -z common-page-size=0x2000} \
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%{mcpu=nps400:-marclinux_nps; :-marclinux}"
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC \
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LINUX_OR_ANDROID_LD (GNU_USER_TARGET_STARTFILE_SPEC, ANDROID_STARTFILE_SPEC)
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC \
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LINUX_OR_ANDROID_LD (GNU_USER_TARGET_ENDFILE_SPEC, ANDROID_ENDFILE_SPEC)
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#undef LIB_SPEC
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#define LIB_SPEC \
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"%{pthread:-lpthread} \
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%{shared:-lc} \
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%{!shared:%{profile:-lc_p}%{!profile:-lc}}"
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#undef TARGET_ASM_FILE_END
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#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
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/* No SDATA default for linux. */
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#undef TARGET_SDATA_DEFAULT
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#define TARGET_SDATA_DEFAULT 0
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/* We have medium calls. */
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#undef TARGET_MMEDIUM_CALLS_DEFAULT
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#define TARGET_MMEDIUM_CALLS_DEFAULT 1
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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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/* Linux toolchains use r25 as the thread pointer register. */
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#undef TARGET_ARC_TP_REGNO_DEFAULT
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#define TARGET_ARC_TP_REGNO_DEFAULT 25
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#undef SUBTARGET_CPP_SPEC
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#define SUBTARGET_CPP_SPEC "\
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%{pthread:-D_REENTRANT} \
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"
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/* Indexed loads are default off. */
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#undef TARGET_INDEXED_LOADS_DEFAULT
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#define TARGET_INDEXED_LOADS_DEFAULT 0
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/* Pre/post modify with register displacement are default off. */
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#undef TARGET_AUTO_MODIFY_REG_DEFAULT
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#define TARGET_AUTO_MODIFY_REG_DEFAULT 0
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#if DEFAULT_LIBC == LIBC_GLIBC
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/* Override linux.h LINK_EH_SPEC definition.
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Signalize that because we have fde-glibc, we don't need all C shared libs
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linked against -lgcc_s. */
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#undef LINK_EH_SPEC
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#define LINK_EH_SPEC "--eh-frame-hdr "
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#endif
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#undef SUBTARGET_CPP_SPEC
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#define SUBTARGET_CPP_SPEC "\
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%{pthread:-D_REENTRANT} \
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"
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/* Build attribute: procedure call standard. */
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#undef ATTRIBUTE_PCS
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#define ATTRIBUTE_PCS 3
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/* Clear the instruction cache from `beg' to `end'. This makes an
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inline system call to SYS_cacheflush. */
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#undef CLEAR_INSN_CACHE
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#define CLEAR_INSN_CACHE(beg, end) \
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{ \
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register unsigned long _beg __asm ("r0") = (unsigned long) (beg); \
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register unsigned long _end __asm ("r1") = (unsigned long) (end); \
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register unsigned long _xtr __asm ("r2") = 0; \
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register unsigned long _scno __asm ("r8") = 244; \
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__asm __volatile ("trap_s 0 ; sys_cache_sync" \
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: "=r" (_beg) \
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: "0" (_beg), "r" (_end), "r" (_xtr), "r" (_scno)); \
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}
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/* Emit rtl for profiling. Output assembler code to FILE
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to call "_mcount" for profiling a function entry. */
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#define PROFILE_HOOK(LABEL) \
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{ \
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rtx fun, rt; \
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rt = get_hard_reg_initial_val (Pmode, RETURN_ADDR_REGNUM); \
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fun = gen_rtx_SYMBOL_REF (Pmode, "_mcount"); \
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emit_library_call (fun, LCT_NORMAL, VOIDmode, rt, Pmode); \
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}
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/* Enter/Leave ops are default off for linux targets. */
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#undef TARGET_CODE_DENSITY_FRAME_DEFAULT
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#define TARGET_CODE_DENSITY_FRAME_DEFAULT 0
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