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/* 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)
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