| /* Definitions for SH running Linux-based GNU systems using ELF |
| Copyright (C) 1999-2022 Free Software Foundation, Inc. |
| Contributed by Kazumoto Kojima <kkojima@rr.iij4u.or.jp> |
| |
| 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/>. */ |
| |
| /* Run-time Target Specification. */ |
| |
| /* Enable DWARF 2 exceptions. */ |
| #undef DWARF2_UNWIND_INFO |
| #define DWARF2_UNWIND_INFO 1 |
| |
| #undef SUBTARGET_CPP_SPEC |
| #define SUBTARGET_CPP_SPEC "\ |
| %{posix:-D_POSIX_SOURCE} \ |
| %{pthread:-D_REENTRANT -D_PTHREADS} \ |
| " |
| |
| #define TARGET_OS_CPP_BUILTINS() \ |
| do \ |
| { \ |
| GNU_USER_TARGET_OS_CPP_BUILTINS(); \ |
| } \ |
| while (0) |
| |
| #undef TARGET_DEFAULT |
| #define TARGET_DEFAULT \ |
| (TARGET_CPU_DEFAULT | TARGET_ENDIAN_DEFAULT | TARGET_OPT_DEFAULT) |
| |
| #define TARGET_ASM_FILE_END file_end_indicate_exec_stack |
| |
| #if TARGET_ENDIAN_DEFAULT == MASK_LITTLE_ENDIAN |
| #define MUSL_DYNAMIC_LINKER_E "%{mb:eb}" |
| #else |
| #define MUSL_DYNAMIC_LINKER_E "%{!ml:eb}" |
| #endif |
| |
| #if TARGET_CPU_DEFAULT & (MASK_HARD_SH2A_DOUBLE | MASK_SH4) |
| /* "-nofpu" if any nofpu option is specified. */ |
| #define MUSL_DYNAMIC_LINKER_FP \ |
| "%{m1|m2|m2a-nofpu|m3|m4-nofpu|m4-100-nofpu|m4-200-nofpu|m4-300-nofpu|" \ |
| "m4-340|m4-400|m4-500|m4al:-nofpu}" |
| #else |
| /* "-nofpu" if none of the hard fpu options are specified. */ |
| #define MUSL_DYNAMIC_LINKER_FP "%{m2a|m4|m4-100|m4-200|m4-300|m4a:;:-nofpu}" |
| #endif |
| |
| #undef MUSL_DYNAMIC_LINKER |
| #define MUSL_DYNAMIC_LINKER \ |
| "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E MUSL_DYNAMIC_LINKER_FP \ |
| "%{mfdpic:-fdpic}.so.1" |
| |
| #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2" |
| |
| #undef SUBTARGET_LINK_EMUL_SUFFIX |
| #define SUBTARGET_LINK_EMUL_SUFFIX "%{mfdpic:_fd;:_linux}" |
| |
| #undef SUBTARGET_LINK_SPEC |
| #define SUBTARGET_LINK_SPEC \ |
| "%{shared:-shared} \ |
| %{!static: \ |
| %{rdynamic:-export-dynamic} \ |
| -dynamic-linker " GNU_USER_DYNAMIC_LINKER "} \ |
| %{static:-static}" |
| |
| /* Output assembler code to STREAM to call the profiler. */ |
| #undef FUNCTION_PROFILER |
| #define FUNCTION_PROFILER(STREAM,LABELNO) \ |
| do { \ |
| if (flag_pic) \ |
| { \ |
| fprintf (STREAM, "\tmov.l\t3f,r1\n"); \ |
| fprintf (STREAM, "\tmova\t3f,r0\n"); \ |
| fprintf (STREAM, "\tadd\tr1,r0\n"); \ |
| fprintf (STREAM, "\tmov.l\t1f,r1\n"); \ |
| fprintf (STREAM, "\tmov.l\t@(r0,r1),r1\n"); \ |
| } \ |
| else \ |
| fprintf (STREAM, "\tmov.l\t1f,r1\n"); \ |
| fprintf (STREAM, "\tsts.l\tpr,@-r15\n"); \ |
| fprintf (STREAM, "\tmova\t2f,r0\n"); \ |
| fprintf (STREAM, "\tjmp\t@r1\n"); \ |
| fprintf (STREAM, "\tlds\tr0,pr\n"); \ |
| fprintf (STREAM, "\t.align\t2\n"); \ |
| if (flag_pic) \ |
| { \ |
| fprintf (STREAM, "1:\t.long\tmcount@GOT\n"); \ |
| fprintf (STREAM, "3:\t.long\t_GLOBAL_OFFSET_TABLE_\n"); \ |
| } \ |
| else \ |
| fprintf (STREAM, "1:\t.long\tmcount\n"); \ |
| fprintf (STREAM, "2:\tlds.l\t@r15+,pr\n"); \ |
| } while (0) |
| |
| /* For SH3 and SH4, we use a slot of the unwind frame which correspond |
| to a fake register number 16 as a placeholder for the return address |
| in MD_FALLBACK_FRAME_STATE_FOR and its content will be read with |
| _Unwind_GetGR which uses dwarf_reg_size_table to get the size of |
| the register. So the entry of dwarf_reg_size_table corresponding to |
| this slot must be set. To do this, we redefine DBX_REGISTER_NUMBER |
| so as to return itself for 16. */ |
| #undef DBX_REGISTER_NUMBER |
| #define DBX_REGISTER_NUMBER(REGNO) \ |
| (((REGNO) == 16) ? 16 : SH_DBX_REGISTER_NUMBER (REGNO)) |
| |
| /* Install the __sync libcalls. */ |
| #undef TARGET_INIT_LIBFUNCS |
| #define TARGET_INIT_LIBFUNCS sh_init_sync_libfuncs |
| |
| #undef SUBTARGET_OVERRIDE_OPTIONS |
| #define SUBTARGET_OVERRIDE_OPTIONS \ |
| do \ |
| { \ |
| /* Set default atomic model if it hasn't been specified. */ \ |
| if (OPTION_SET_P (sh_atomic_model_str) == 0) \ |
| { \ |
| if (TARGET_SH3) \ |
| sh_atomic_model_str = "soft-gusa"; \ |
| else if (TARGET_SH1) \ |
| sh_atomic_model_str = "soft-imask"; \ |
| } \ |
| /* Set -musermode if it hasn't been specified. */ \ |
| if (OPTION_SET_P (TARGET_USERMODE) == 0) \ |
| TARGET_USERMODE = true; \ |
| } \ |
| while (0) |