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cffb2a26 | 1 | /* Definitions of target machine for GNU compiler. |
2 | For ARM with ELF obj format. | |
fbd26352 | 3 | Copyright (C) 1995-2019 Free Software Foundation, Inc. |
6cd47762 | 4 | Contributed by Philip Blundell <philb@gnu.org> and |
5 | Catherine Moore <clm@cygnus.com> | |
6 | ||
acf6ed70 | 7 | This file is part of GCC. |
6cd47762 | 8 | |
acf6ed70 | 9 | GCC is free software; you can redistribute it and/or modify it |
10 | under the terms of the GNU General Public License as published | |
038d1e19 | 11 | by the Free Software Foundation; either version 3, or (at your |
acf6ed70 | 12 | option) any later version. |
6cd47762 | 13 | |
acf6ed70 | 14 | GCC is distributed in the hope that it will be useful, but WITHOUT |
15 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
16 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
17 | License for more details. | |
6cd47762 | 18 | |
b81ef88d | 19 | Under Section 7 of GPL version 3, you are granted additional |
20 | permissions described in the GCC Runtime Library Exception, version | |
21 | 3.1, as published by the Free Software Foundation. | |
22 | ||
6f0c730b | 23 | You should have received a copy of the GNU General Public License and |
24 | a copy of the GCC Runtime Library Exception along with this program; | |
25 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
038d1e19 | 26 | <http://www.gnu.org/licenses/>. */ |
6cd47762 | 27 | |
a9acd81a | 28 | #ifndef OBJECT_FORMAT_ELF |
29 | #error elf.h included before elfos.h | |
30 | #endif | |
6cd47762 | 31 | |
32 | #ifndef LOCAL_LABEL_PREFIX | |
33 | #define LOCAL_LABEL_PREFIX "." | |
34 | #endif | |
35 | ||
96576951 | 36 | #ifndef SUBTARGET_CPP_SPEC |
82655d83 | 37 | #define SUBTARGET_CPP_SPEC "-D__ELF__" |
6cd47762 | 38 | #endif |
39 | ||
26eb05e6 | 40 | #ifndef SUBTARGET_EXTRA_SPECS |
41 | #define SUBTARGET_EXTRA_SPECS \ | |
3eddb6a2 | 42 | { "subtarget_extra_asm_spec", SUBTARGET_EXTRA_ASM_SPEC }, \ |
657e4193 | 43 | { "subtarget_asm_float_spec", SUBTARGET_ASM_FLOAT_SPEC }, \ |
44 | SUBSUBTARGET_EXTRA_SPECS | |
26eb05e6 | 45 | #endif |
46 | ||
cffb2a26 | 47 | #ifndef SUBTARGET_EXTRA_ASM_SPEC |
26eb05e6 | 48 | #define SUBTARGET_EXTRA_ASM_SPEC "" |
cffb2a26 | 49 | #endif |
50 | ||
3eddb6a2 | 51 | #ifndef SUBTARGET_ASM_FLOAT_SPEC |
52 | #define SUBTARGET_ASM_FLOAT_SPEC "\ | |
a2cd141b | 53 | %{mapcs-float:-mfloat}" |
3eddb6a2 | 54 | #endif |
55 | ||
657e4193 | 56 | #undef SUBSUBTARGET_EXTRA_SPECS |
57 | #define SUBSUBTARGET_EXTRA_SPECS | |
58 | ||
cffb2a26 | 59 | #ifndef ASM_SPEC |
60 | #define ASM_SPEC "\ | |
61 | %{mbig-endian:-EB} \ | |
e1e06b21 | 62 | %{mlittle-endian:-EL} \ |
af9b12a1 | 63 | %(asm_cpu_spec) \ |
cffb2a26 | 64 | %{mapcs-*:-mapcs-%*} \ |
3eddb6a2 | 65 | %(subtarget_asm_float_spec) \ |
cffb2a26 | 66 | %{mthumb-interwork:-mthumb-interwork} \ |
2c9e7fd3 | 67 | %{mfloat-abi=*} %{!mfpu=auto: %{mfpu=*}} \ |
26eb05e6 | 68 | %(subtarget_extra_asm_spec)" |
cffb2a26 | 69 | #endif |
70 | ||
a9acd81a | 71 | /* The ARM uses @ are a comment character so we need to redefine |
72 | TYPE_OPERAND_FMT. */ | |
73 | #undef TYPE_OPERAND_FMT | |
5f61bb87 | 74 | #define TYPE_OPERAND_FMT "%%%s" |
6cd47762 | 75 | |
a9acd81a | 76 | /* We might need a ARM specific header to function declarations. */ |
77 | #undef ASM_DECLARE_FUNCTION_NAME | |
9c21be33 | 78 | #define ASM_DECLARE_FUNCTION_NAME arm_asm_declare_function_name |
6cd47762 | 79 | |
a9acd81a | 80 | /* We might need an ARM specific trailer for function declarations. */ |
81 | #undef ASM_DECLARE_FUNCTION_SIZE | |
bba10fb8 | 82 | #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \ |
83 | do \ | |
84 | { \ | |
1774763d | 85 | ARM_OUTPUT_FN_UNWIND (FILE, FALSE); \ |
bba10fb8 | 86 | if (!flag_inhibit_size_directive) \ |
a7424888 | 87 | ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME); \ |
bba10fb8 | 88 | } \ |
89 | while (0) | |
6cd47762 | 90 | |
91 | /* Define this macro if jump tables (for `tablejump' insns) should be | |
92 | output in the text section, along with the assembler instructions. | |
93 | Otherwise, the readonly data section is used. */ | |
25f905c2 | 94 | /* We put ARM and Thumb-2 jump tables in the text section, because it makes |
95 | the code more efficient, but for Thumb-1 it's better to put them out of | |
e6ac8414 | 96 | band unless we are generating compressed tables. */ |
97 | #define JUMP_TABLES_IN_TEXT_SECTION \ | |
9753b549 | 98 | ((TARGET_32BIT || (TARGET_THUMB && (optimize_size || flag_pic))) \ |
99 | && !target_pure_code) | |
6cd47762 | 100 | |
6cd47762 | 101 | #ifndef LINK_SPEC |
e1e06b21 | 102 | #define LINK_SPEC "%{mbig-endian:-EB} %{mlittle-endian:-EL} -X" |
6cd47762 | 103 | #endif |
104 | ||
105 | /* Run-time Target Specification. */ | |
6cd47762 | 106 | #ifndef TARGET_DEFAULT |
81f6de2f | 107 | #define TARGET_DEFAULT (MASK_APCS_FRAME) |
6cd47762 | 108 | #endif |
109 | ||
6cd47762 | 110 | \f |
92c473b8 | 111 | #define TARGET_ASM_FILE_START_FILE_DIRECTIVE true |
6cd47762 | 112 | \f |
45220d6c | 113 | |
d24bc145 | 114 | /* Output an element in the static constructor array. */ |
115 | #undef TARGET_ASM_CONSTRUCTOR | |
116 | #define TARGET_ASM_CONSTRUCTOR arm_elf_asm_constructor | |
117 | ||
a457f9f8 | 118 | #undef TARGET_ASM_DESTRUCTOR |
119 | #define TARGET_ASM_DESTRUCTOR arm_elf_asm_destructor | |
120 | ||
6ebaa29d | 121 | /* For PIC code we need to explicitly specify (PLT) and (GOT) relocs. */ |
55c1e470 | 122 | #define NEED_PLT_RELOC flag_pic |
123 | #define NEED_GOT_RELOC flag_pic | |
6ebaa29d | 124 | |
4e06b511 | 125 | /* The ELF assembler handles GOT addressing differently to NetBSD. */ |
126 | #define GOT_PCREL 0 | |
127 | ||
0e2a616b | 128 | /* Align output to a power of two. Note ".align 0" is redundant, |
129 | and also GAS will treat it as ".align 2" which we do not want. */ | |
130 | #define ASM_OUTPUT_ALIGN(STREAM, POWER) \ | |
131 | do \ | |
132 | { \ | |
133 | if ((POWER) > 0) \ | |
134 | fprintf (STREAM, "\t.align\t%d\n", POWER); \ | |
135 | } \ | |
136 | while (0) | |
e15d4684 | 137 | |
b77c60b7 | 138 | /* Horrible hack: We want to prevent some libgcc routines being included |
9e6f4af4 | 139 | for some multilibs. The condition should match the one in |
73dbcdab | 140 | libgcc/config/arm/lib1funcs.S and libgcc/config/arm/t-elf. */ |
9e6f4af4 | 141 | #if __ARM_ARCH_ISA_ARM || __ARM_ARCH_ISA_THUMB != 1 |
b77c60b7 | 142 | #undef L_fixdfsi |
143 | #undef L_fixunsdfsi | |
144 | #undef L_truncdfsf2 | |
145 | #undef L_fixsfsi | |
146 | #undef L_fixunssfsi | |
147 | #undef L_floatdidf | |
148 | #undef L_floatdisf | |
149 | #undef L_floatundidf | |
150 | #undef L_floatundisf | |
151 | #endif | |
152 |