1 /* SPDX-License-Identifier: GPL-2.0 */
2 #include <asm-generic/vmlinux.lds.h>
3
4 #ifdef CONFIG_HOTPLUG_CPU
5 #define ARM_CPU_DISCARD(x)
6 #define ARM_CPU_KEEP(x) x
7 #else
8 #define ARM_CPU_DISCARD(x) x
9 #define ARM_CPU_KEEP(x)
10 #endif
11
12 #if (defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)) || \
13 defined(CONFIG_GENERIC_BUG) || defined(CONFIG_JUMP_LABEL)
14 #define ARM_EXIT_KEEP(x) x
15 #define ARM_EXIT_DISCARD(x)
16 #else
17 #define ARM_EXIT_KEEP(x)
18 #define ARM_EXIT_DISCARD(x) x
19 #endif
20
21 #ifdef CONFIG_MMU
22 #define ARM_MMU_KEEP(x) x
23 #define ARM_MMU_DISCARD(x)
24 #else
25 #define ARM_MMU_KEEP(x)
26 #define ARM_MMU_DISCARD(x) x
27 #endif
28
29 /*
30 * ld.lld does not support NOCROSSREFS:
31 * https://github.com/ClangBuiltLinux/linux/issues/1609
32 */
33 #ifdef CONFIG_LD_IS_LLD
34 #define NOCROSSREFS
35 #endif
36
37 /* Set start/end symbol names to the LMA for the section */
38 #define ARM_LMA(sym, section) \
39 sym##_start = LOADADDR(section); \
40 sym##_end = LOADADDR(section) + SIZEOF(section)
41
42 #define PROC_INFO \
43 . = ALIGN(4); \
44 __proc_info_begin = .; \
45 KEEP(*(.proc.info.init)) \
46 __proc_info_end = .;
47
48 #define IDMAP_TEXT \
49 ALIGN_FUNCTION(); \
50 __idmap_text_start = .; \
51 *(.idmap.text) \
52 __idmap_text_end = .; \
53
54 #define ARM_DISCARD \
55 *(.ARM.exidx.exit.text) \
56 *(.ARM.extab.exit.text) \
57 *(.ARM.exidx.text.exit) \
58 *(.ARM.extab.text.exit) \
59 ARM_CPU_DISCARD(*(.ARM.exidx.cpuexit.text)) \
60 ARM_CPU_DISCARD(*(.ARM.extab.cpuexit.text)) \
61 ARM_EXIT_DISCARD(EXIT_TEXT) \
62 ARM_EXIT_DISCARD(EXIT_DATA) \
63 EXIT_CALL \
64 ARM_MMU_DISCARD(*(.text.fixup)) \
65 ARM_MMU_DISCARD(*(__ex_table)) \
66 COMMON_DISCARDS
67
68 /*
69 * Sections that should stay zero sized, which is safer to explicitly
70 * check instead of blindly discarding.
71 */
72 #define ARM_ASSERTS \
73 .plt : { \
74 *(.iplt) *(.rel.iplt) *(.iplt) *(.igot.plt) \
75 } \
76 ASSERT(SIZEOF(.plt) == 0, \
77 "Unexpected run-time procedure linkages detected!")
78
79 #define ARM_DETAILS \
80 ELF_DETAILS \
81 .ARM.attributes 0 : { *(.ARM.attributes) }
82
83 #define ARM_STUBS_TEXT \
84 *(.gnu.warning) \
85 *(.glue_7) \
86 *(.glue_7t) \
87 *(.vfp11_veneer) \
88 *(.v4_bx)
89
90 #define ARM_TEXT \
91 IDMAP_TEXT \
92 __entry_text_start = .; \
93 *(.entry.text) \
94 __entry_text_end = .; \
95 IRQENTRY_TEXT \
96 SOFTIRQENTRY_TEXT \
97 TEXT_TEXT \
98 SCHED_TEXT \
99 LOCK_TEXT \
100 KPROBES_TEXT \
101 ARM_STUBS_TEXT \
102 . = ALIGN(4); \
103 *(.got) /* Global offset table */ \
104 ARM_CPU_KEEP(PROC_INFO)
105
106 /* Stack unwinding tables */
107 #define ARM_UNWIND_SECTIONS \
108 . = ALIGN(8); \
109 .ARM.unwind_idx : { \
110 __start_unwind_idx = .; \
111 *(.ARM.exidx*) \
112 __stop_unwind_idx = .; \
113 } \
114 .ARM.unwind_tab : { \
115 __start_unwind_tab = .; \
116 *(.ARM.extab*) \
117 __stop_unwind_tab = .; \
118 }
119
120 /*
121 * The vectors and stubs are relocatable code, and the
122 * only thing that matters is their relative offsets
123 */
124 #define ARM_VECTORS \
125 __vectors_lma = .; \
126 OVERLAY 0xffff0000 : NOCROSSREFS AT(__vectors_lma) { \
127 .vectors { \
128 *(.vectors) \
129 } \
130 .vectors.bhb.loop8 { \
131 *(.vectors.bhb.loop8) \
132 } \
133 .vectors.bhb.bpiall { \
134 *(.vectors.bhb.bpiall) \
135 } \
136 } \
137 ARM_LMA(__vectors, .vectors); \
138 ARM_LMA(__vectors_bhb_loop8, .vectors.bhb.loop8); \
139 ARM_LMA(__vectors_bhb_bpiall, .vectors.bhb.bpiall); \
140 . = __vectors_lma + SIZEOF(.vectors) + \
141 SIZEOF(.vectors.bhb.loop8) + \
142 SIZEOF(.vectors.bhb.bpiall); \
143 \
144 __stubs_lma = .; \
145 .stubs ADDR(.vectors) + 0x1000 : AT(__stubs_lma) { \
146 *(.stubs) \
147 } \
148 ARM_LMA(__stubs, .stubs); \
149 . = __stubs_lma + SIZEOF(.stubs); \
150 \
151 PROVIDE(vector_fiq_offset = vector_fiq - ADDR(.vectors));
152
153 #define ARM_TCM \
154 __itcm_start = ALIGN(4); \
155 .text_itcm ITCM_OFFSET : AT(__itcm_start - LOAD_OFFSET) { \
156 __sitcm_text = .; \
157 *(.tcm.text) \
158 *(.tcm.rodata) \
159 . = ALIGN(4); \
160 __eitcm_text = .; \
161 } \
162 . = __itcm_start + SIZEOF(.text_itcm); \
163 \
164 __dtcm_start = .; \
165 .data_dtcm DTCM_OFFSET : AT(__dtcm_start - LOAD_OFFSET) { \
166 __sdtcm_data = .; \
167 *(.tcm.data) \
168 . = ALIGN(4); \
169 __edtcm_data = .; \
170 } \
171 . = __dtcm_start + SIZEOF(.data_dtcm);
172
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