1/* Definitions for RISC-V GNU/Linux systems with ELF format.
2   Copyright (C) 1998-2022 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 3, or (at your option)
9any later version.
10
11GCC is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with GCC; see the file COPYING3.  If not see
18<http://www.gnu.org/licenses/>.  */
19
20#define TARGET_OS_CPP_BUILTINS()				\
21  do {								\
22    GNU_USER_TARGET_OS_CPP_BUILTINS();				\
23  } while (0)
24
25#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-riscv" XLEN_SPEC "-" ABI_SPEC ".so.1"
26
27#define MUSL_ABI_SUFFIX \
28  "%{mabi=ilp32:-sf}" \
29  "%{mabi=ilp32f:-sp}" \
30  "%{mabi=ilp32d:}" \
31  "%{mabi=lp64:-sf}" \
32  "%{mabi=lp64f:-sp}" \
33  "%{mabi=lp64d:}"
34
35#undef MUSL_DYNAMIC_LINKER
36#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-riscv" XLEN_SPEC MUSL_ABI_SUFFIX ".so.1"
37
38/* Because RISC-V only has word-sized atomics, it requries libatomic where
39   others do not.  So link libatomic by default, as needed.  */
40#undef LIB_SPEC
41#ifdef LD_AS_NEEDED_OPTION
42#define LIB_SPEC GNU_USER_TARGET_LIB_SPEC \
43  " %{pthread:" LD_AS_NEEDED_OPTION " -latomic " LD_NO_AS_NEEDED_OPTION "}"
44#else
45#define LIB_SPEC GNU_USER_TARGET_LIB_SPEC " -latomic "
46#endif
47
48#define ICACHE_FLUSH_FUNC "__riscv_flush_icache"
49
50#define CPP_SPEC "%{pthread:-D_REENTRANT}"
51
52#define LD_EMUL_SUFFIX \
53  "%{mabi=lp64d:}" \
54  "%{mabi=lp64f:_lp64f}" \
55  "%{mabi=lp64:_lp64}" \
56  "%{mabi=ilp32d:}" \
57  "%{mabi=ilp32f:_ilp32f}" \
58  "%{mabi=ilp32:_ilp32}"
59
60#define LINK_SPEC "\
61-melf" XLEN_SPEC DEFAULT_ENDIAN_SPEC "riscv" LD_EMUL_SUFFIX " \
62%{mno-relax:--no-relax} \
63%{mbig-endian:-EB} \
64%{mlittle-endian:-EL} \
65%{shared} \
66  %{!shared: \
67    %{!static: \
68      %{rdynamic:-export-dynamic} \
69      -dynamic-linker " GNU_USER_DYNAMIC_LINKER "} \
70    %{static:-static}}"
71
72#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
73
74#define STARTFILE_PREFIX_SPEC 			\
75   "/lib" XLEN_SPEC "/" ABI_SPEC "/ "		\
76   "/usr/lib" XLEN_SPEC "/" ABI_SPEC "/ "	\
77   "/lib/ "					\
78   "/usr/lib/ "
79