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b27c1082 1/* Definitions of target machine for GNU compiler, NetBSD/arm ELF version.
8d9254fc 2 Copyright (C) 2002-2020 Free Software Foundation, Inc.
b27c1082
MT
3 Contributed by Wasabi Systems, Inc.
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/* Run-time Target Specification. */
22#undef MULTILIB_DEFAULTS
23#define MULTILIB_DEFAULTS { "mabi=aapcs-linux" }
24
25#define TARGET_LINKER_EABI_SUFFIX_SOFT \
26 "%{!mabi=apcs-gnu:%{!mabi=atpcs:%{mfloat-abi=hard:_eabihf;:_eabi}}}"
27#define TARGET_LINKER_EABI_SUFFIX_HARD \
28 "%{!mabi=apcs-gnu:%{!mabi=atpcs:%{mfloat-abi=soft:_eabi;:_eabihf}}}"
29
30#define TARGET_LINKER_EABI_SUFFIX \
31 (TARGET_DEFAULT_FLOAT_ABI == ARM_FLOAT_ABI_SOFT \
32 ? TARGET_LINKER_EABI_SUFFIX_SOFT \
33 : TARGET_LINKER_EABI_SUFFIX_HARD)
34
35#define TARGET_LINKER_BIG_EMULATION "armelfb_nbsd%(linker_eabi_suffix)"
36#define TARGET_LINKER_LITTLE_EMULATION "armelf_nbsd%(linker_eabi_suffix)"
37
38/* TARGET_BIG_ENDIAN_DEFAULT is set in
39 config.gcc for big endian configurations. */
40#undef TARGET_LINKER_EMULATION
41#if TARGET_BIG_ENDIAN_DEFAULT
42#define TARGET_LINKER_EMULATION TARGET_LINKER_BIG_EMULATION
43#else
44#define TARGET_LINKER_EMULATION TARGET_LINKER_LITTLE_EMULATION
45#endif
46
47#undef ARM_DEFAULT_ABI
48#define ARM_DEFAULT_ABI ARM_ABI_AAPCS_LINUX
49
50#undef ARM_UNWIND_INFO
51#define ARM_UNWIND_INFO 0
52#undef DWARF2_UNWIND_INFO
53#define DWARF2_UNWIND_INFO 1
54
55#undef TARGET_OS_CPP_BUILTINS
56#define TARGET_OS_CPP_BUILTINS() \
57 do \
58 { \
59 if (TARGET_AAPCS_BASED) \
60 TARGET_BPABI_CPP_BUILTINS(); \
61 NETBSD_OS_CPP_BUILTINS_ELF(); \
62 if (DWARF2_UNWIND_INFO) \
63 builtin_define ("__ARM_DWARF_EH__"); \
64 } \
65 while (0)
66
67#undef SUBTARGET_CPP_SPEC
68#define SUBTARGET_CPP_SPEC NETBSD_CPP_SPEC
69
70/*
71 * Override AAPCS types to remain compatible the existing NetBSD types.
72 */
73#undef WCHAR_TYPE
74#define WCHAR_TYPE "int"
75
76#undef SIZE_TYPE
77#define SIZE_TYPE "long unsigned int"
78
79#undef PTRDIFF_TYPE
80#define PTRDIFF_TYPE "long int"
81
82#undef SUBTARGET_EXTRA_ASM_SPEC
83#define SUBTARGET_EXTRA_ASM_SPEC \
84 "%{mabi=apcs-gnu|mabi=atpcs:-meabi=gnu} " \
85 "%{fpic|fpie:-k} " \
86 "%{fPIC|fPIE:-k}"
87
88#undef SUBTARGET_EXTRA_SPECS
89#define SUBTARGET_EXTRA_SPECS \
90 { "subtarget_extra_asm_spec", SUBTARGET_EXTRA_ASM_SPEC }, \
91 { "linker_eabi_suffix", TARGET_LINKER_EABI_SUFFIX }, \
92 { "linker_emulation", TARGET_LINKER_EMULATION }, \
93 { "linker_big_emulation", TARGET_LINKER_BIG_EMULATION }, \
94 { "linker_little_emulation", TARGET_LINKER_LITTLE_EMULATION }, \
95 { "target_fix_v4bx_spec", TARGET_FIX_V4BX_SPEC }, \
96 NETBSD_SUBTARGET_EXTRA_SPECS
97
98#define NETBSD_ENTRY_POINT "__start"
99
100#undef LINK_SPEC
101#define LINK_SPEC \
102 "-X %{mbig-endian:-EB -m %(linker_big_emulation)} " \
103 "%{mlittle-endian:-EL -m %(linker_liitle_emulation)} " \
104 "%{!mbig-endian:%{!mlittle-endian:-m %(linker_emulation)}} " \
105 "%(target_fix_v4bx_spec) %(netbsd_link_spec)"