1 /* Target macros for arc*-elf targets. 2 3 Copyright (C) 2017-2018 Free Software Foundation, Inc. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3, or (at your option) 10 any later version. 11 12 GCC is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public 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 DWARF2_UNWIND_INFO 22 #define DWARF2_UNWIND_INFO 0 23 24 #undef LINK_SPEC 25 #define LINK_SPEC "%{mbig-endian:-EB} %{EB} %{EL}" 26 27 #define ARC_TLS_EXTRA_START_SPEC "crttls.o%s" 28 29 #undef SUBTARGET_EXTRA_SPECS 30 #define SUBTARGET_EXTRA_SPECS \ 31 { "arc_tls_extra_start_spec", ARC_TLS_EXTRA_START_SPEC }, \ 32 33 #undef STARTFILE_SPEC 34 #define STARTFILE_SPEC "%{pg|p:gcrt0.o%s}%{!pg:%{!p:crt0.o%s}} crti%O%s " \ 35 "%(arc_tls_extra_start_spec) crtbegin.o%s" 36 37 #undef ENDFILE_SPEC 38 #define ENDFILE_SPEC "crtend.o%s crtn%O%s" 39 40 /* Leave the linker script to choose the appropriate libraries. */ 41 #undef LIB_SPEC 42 #define LIB_SPEC "" 43 44 /* SDATA default for elf. */ 45 #undef TARGET_SDATA_DEFAULT 46 #define TARGET_SDATA_DEFAULT 1 47 48 /* We no medium calls. */ 49 #undef TARGET_MMEDIUM_CALLS_DEFAULT 50 #define TARGET_MMEDIUM_CALLS_DEFAULT 0 51 52 #ifdef ARC_MULTILIB_CPU_DEFAULT 53 # ifndef MULTILIB_DEFAULTS 54 # define MULTILIB_DEFAULTS { "mcpu=" ARC_MULTILIB_CPU_DEFAULT } 55 # endif 56 #endif 57 58 /* Bare-metal toolchains do not need a thread pointer register. */ 59 #undef TARGET_ARC_TP_REGNO_DEFAULT 60 #define TARGET_ARC_TP_REGNO_DEFAULT -1 61 62 /* Indexed loads are default. */ 63 #undef TARGET_INDEXED_LOADS_DEFAULT 64 #define TARGET_INDEXED_LOADS_DEFAULT 1 65 66 /* Pre/post modify with register displacement are default. */ 67 #undef TARGET_AUTO_MODIFY_REG_DEFAULT 68 #define TARGET_AUTO_MODIFY_REG_DEFAULT 1 69 70 /* Build attribute: procedure call standard. */ 71 #undef ATTRIBUTE_PCS 72 #define ATTRIBUTE_PCS 2 73 74 #undef TARGET_ASM_FILE_END 75 #define TARGET_ASM_FILE_END arc_file_end 76 77 /* Emit rtl for profiling. Output assembler code to FILE 78 to call "_mcount" for profiling a function entry. */ 79 #define PROFILE_HOOK(LABEL) \ 80 { \ 81 rtx fun; \ 82 fun = gen_rtx_SYMBOL_REF (Pmode, "__mcount"); \ 83 emit_library_call (fun, LCT_NORMAL, VOIDmode); \ 84 } 85