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/* Target macros for arc*-*-linux targets.
Copyright (C) 2017-2019 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/>. */
/* Enable DWARF 2 exceptions. */
#undef DWARF2_UNWIND_INFO
#define DWARF2_UNWIND_INFO 1
#define TARGET_OS_CPP_BUILTINS() \
do \
{ \
GNU_USER_TARGET_OS_CPP_BUILTINS (); \
} \
while (0)
#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-arc.so.2"
#define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
/* Note that the default is to link against dynamic libraries, if they are
available. Override with -static. */
#undef LINK_SPEC
#define LINK_SPEC "%{h*} \
%{static:-Bstatic} \
%{shared:-shared} \
%{symbolic:-Bsymbolic} \
%{!static: \
%{rdynamic:-export-dynamic} \
%{!shared:-dynamic-linker " GNU_USER_DYNAMIC_LINKER "}} \
-X \
%{mbig-endian:-EB} %{EB} %{EL} \
%{!z:-z max-page-size=0x2000 -z common-page-size=0x2000} \
%{mcpu=nps400:-marclinux_nps; :-marclinux}"
#undef STARTFILE_SPEC
#define STARTFILE_SPEC \
LINUX_OR_ANDROID_LD (GNU_USER_TARGET_STARTFILE_SPEC, ANDROID_STARTFILE_SPEC)
#undef ENDFILE_SPEC
#define ENDFILE_SPEC \
LINUX_OR_ANDROID_LD (GNU_USER_TARGET_ENDFILE_SPEC, ANDROID_ENDFILE_SPEC)
#undef LIB_SPEC
#define LIB_SPEC \
"%{pthread:-lpthread} \
%{shared:-lc} \
%{!shared:%{profile:-lc_p}%{!profile:-lc}}"
#undef TARGET_ASM_FILE_END
#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
/* No SDATA default for linux. */
#undef TARGET_SDATA_DEFAULT
#define TARGET_SDATA_DEFAULT 0
/* We have medium calls. */
#undef TARGET_MMEDIUM_CALLS_DEFAULT
#define TARGET_MMEDIUM_CALLS_DEFAULT 1
/* We do not have any MULTILIB_OPTIONS specified, so there are no
MULTILIB_DEFAULTS. */
#undef MULTILIB_DEFAULTS
/* Linux toolchains use r25 as the thread pointer register. */
#undef TARGET_ARC_TP_REGNO_DEFAULT
#define TARGET_ARC_TP_REGNO_DEFAULT 25
#undef SUBTARGET_CPP_SPEC
#define SUBTARGET_CPP_SPEC "\
%{pthread:-D_REENTRANT} \
"
/* Indexed loads are default off. */
#undef TARGET_INDEXED_LOADS_DEFAULT
#define TARGET_INDEXED_LOADS_DEFAULT 0
/* Pre/post modify with register displacement are default off. */
#undef TARGET_AUTO_MODIFY_REG_DEFAULT
#define TARGET_AUTO_MODIFY_REG_DEFAULT 0
#if DEFAULT_LIBC == LIBC_GLIBC
/* Override linux.h LINK_EH_SPEC definition.
Signalize that because we have fde-glibc, we don't need all C shared libs
linked against -lgcc_s. */
#undef LINK_EH_SPEC
#define LINK_EH_SPEC "--eh-frame-hdr "
#endif
#undef SUBTARGET_CPP_SPEC
#define SUBTARGET_CPP_SPEC "\
%{pthread:-D_REENTRANT} \
"
/* Build attribute: procedure call standard. */
#undef ATTRIBUTE_PCS
#define ATTRIBUTE_PCS 3
/* Clear the instruction cache from `beg' to `end'. This makes an
inline system call to SYS_cacheflush. */
#undef CLEAR_INSN_CACHE
#define CLEAR_INSN_CACHE(beg, end) \
{ \
register unsigned long _beg __asm ("r0") = (unsigned long) (beg); \
register unsigned long _end __asm ("r1") = (unsigned long) (end); \
register unsigned long _xtr __asm ("r2") = 0; \
register unsigned long _scno __asm ("r8") = 244; \
__asm __volatile ("trap_s 0 ; sys_cache_sync" \
: "=r" (_beg) \
: "0" (_beg), "r" (_end), "r" (_xtr), "r" (_scno)); \
}
/* Emit rtl for profiling. Output assembler code to FILE
to call "_mcount" for profiling a function entry. */
#define PROFILE_HOOK(LABEL) \
{ \
rtx fun, rt; \
rt = get_hard_reg_initial_val (Pmode, RETURN_ADDR_REGNUM); \
fun = gen_rtx_SYMBOL_REF (Pmode, "_mcount"); \
emit_library_call (fun, LCT_NORMAL, VOIDmode, rt, Pmode); \
}
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