1 /* Definitions for TILEPro running Linux-based GNU systems with ELF. 2 Copyright (C) 2011-2021 Free Software Foundation, Inc. 3 Contributed by Walter Lee (walt@tilera.com) 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it 8 under the terms of the GNU General Public License as published 9 by the Free Software Foundation; either version 3, or (at your 10 option) any later version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 15 License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GCC; see the file COPYING3. If not see 19 <http://www.gnu.org/licenses/>. */ 20 21 #undef CPP_SPEC 22 #define CPP_SPEC "%{pthread:-D_REENTRANT}" 23 24 #undef LINK_SPEC 25 #define LINK_SPEC "\ 26 %{shared:-shared} \ 27 %{!shared: \ 28 %{!static: \ 29 %{rdynamic:-export-dynamic} \ 30 -dynamic-linker /lib/ld.so.1} \ 31 %{static:-static}}" 32 33 #define NO_PROFILE_COUNTERS 1 34 35 #undef MCOUNT_NAME 36 #define MCOUNT_NAME "__mcount" 37 38 #undef NEED_INDICATE_EXEC_STACK 39 #define NEED_INDICATE_EXEC_STACK 1 40 41 #ifdef TARGET_LIBC_PROVIDES_SSP 42 /* TILEPro glibc provides __stack_chk_guard two pointer-size words before 43 tp. */ 44 #define TARGET_THREAD_SSP_OFFSET (-2 * GET_MODE_SIZE (ptr_mode)) 45 #endif 46 47 /* For __clear_cache in libgcc2.c. */ 48 #ifdef IN_LIBGCC2 49 50 /* Use the minimum page size of 4K. Alternatively we can call 51 getpagesize() but it introduces a libc dependence. 52 See Linux arch/tile/include/uapi/arch/icache.h for more commentary. */ 53 #undef CLEAR_INSN_CACHE 54 #define CLEAR_INSN_CACHE(BEG, END) \ 55 { \ 56 long size = (long) (END) - (long) (BEG); \ 57 if (size) \ 58 { \ 59 const char *start = (const char *) ((unsigned long) (BEG) & -64L);\ 60 const char *end = start + (size < 16384 ? size : 16384) - 1; \ 61 long num_passes = 4; \ 62 __insn_mf (); \ 63 do \ 64 { \ 65 const char *p; \ 66 for (p = start; p <= end; p += 64) \ 67 __insn_icoh (p); \ 68 start += 4096; \ 69 end += 4096; \ 70 } \ 71 while (--num_passes > 0); \ 72 __insn_drain (); \ 73 } \ 74 } 75 76 #else 77 78 /* define CLEAR_INSN_CACHE so that gcc knows to expand __builtin__clear_cache 79 to the libraray call. */ 80 #undef CLEAR_INSN_CACHE 81 #define CLEAR_INSN_CACHE 1 82 83 #endif 84