/* Declarations for C-SKY targets running Linux. Copyright (C) 2018-2020 Free Software Foundation, Inc. Contributed by C-SKY Microsystems and Mentor Graphics. 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 . */ /****************************************************************** * Run-time Target Specification * ******************************************************************/ #undef STARTFILE_SPEC #define STARTFILE_SPEC \ "%{!shared: %{pie:Scrt1.o%s;:crt1.o%s}} \ crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}" #undef ENDFILE_SPEC #define ENDFILE_SPEC \ "%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s" #undef CC1_SPEC #define CC1_SPEC \ "%{EB:-EB} \ %{EL:-EL} \ %{profile:-p} \ " #undef ASM_SPEC #define ASM_SPEC \ "%{mbig-endian:-mbig-endian} \ %{EB:-EB} \ %{EL:-EL} \ %{fpic|fPIC:-pic} \ %{mcpu=*:-mcpu=%*} \ %{march=*:-march=%*} \ %{mhard-float:-mhard-float} \ %{melrw:-melrw} \ %{mno-elrw:-mno-elrw} \ %{mistack:-mistack} \ %{mno-istack:-mno-istack} \ %{mmp:-mmp} \ %{mcp:-mcp} \ %{mcache:-mcache} \ %{msecurity|mmac:-msecurity} \ %{mtrust:-mtrust} \ %{mdsp:-mdsp} \ %{medsp:-medsp} \ %{mvdsp:-mvdsp} \ " #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-cskyv2%{mhard-float:-hf}%{mbig-endian:-be}.so.1" #define LINUX_TARGET_LINK_SPEC "%{h*} %{version:-v} \ %{b} \ %{static:-Bstatic} \ %{shared:-shared} \ %{symbolic:-Bsymbolic} \ %{!static: \ %{rdynamic:-export-dynamic} \ %{!shared:-dynamic-linker " GNU_USER_DYNAMIC_LINKER "}} \ -X \ %{mbig-endian:-EB} %{mlittle-endian:-EL} \ %{EB:-EB} %{EL:-EL}" #undef LINK_SPEC #define LINK_SPEC LINUX_TARGET_LINK_SPEC #undef LIB_SPEC #define LIB_SPEC \ "%{pthread:-lpthread} -lc %{mccrt:-lcc-rt}" /* FIXME add this to LIB_SPEC when need */ /* %{!shared:%{profile:-lc_p}%{!profile:-lc}}" */ #define TARGET_OS_CPP_BUILTINS() \ do \ { \ GNU_USER_TARGET_OS_CPP_BUILTINS (); \ } \ while (0) /* In crtstuff.c to control section in where code resides. We have to write it as asm code. */ #ifdef __PIC__ #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ asm (SECTION_OP "\n" \ "\tgrs\tr3, .Lgetpc_"#FUNC"\n\t" \ ".Lgetpc_"#FUNC":\n\t" \ "\tlrw\tr2,\t.Lgetpc_"#FUNC"@GOTPC\n\t" \ "\taddu\tr3, r2\n\t" \ "\tlrw\tr2, "#FUNC"@GOTOFF\n\t" \ "\taddu\tr2, r3\n\t" \ "\tjsr\tr2\n\t"); \ FORCE_CODE_SECTION_ALIGN \ asm (TEXT_SECTION_ASM_OP); #endif #undef CPP_SPEC #define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}" #undef FUNCTION_PROFILER #define SAVE_LR \ "push\tlr" #define FUNCTION_PROFILER(file, labelno) \ fprintf (file, "\t%s\n\tjbsr\t_mcount\n", SAVE_LR); #define NO_PROFILE_COUNTERS 1 /* Enable features only for Linux toolchains. */ #define TARGET_CSKY_LINUX 1 /* Clear the instruction cache from `BEG' to `END'. */ #define CLEAR_INSN_CACHE(BEG, END) \ cacheflush (BEG, END-BEG, 3) /* For __clear_cache in libgcc2.c. The declaration is copied from . */ #ifdef IN_LIBGCC2 extern int cacheflush (void *__addr, const int __nbytes, const int __op); #endif