1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Kernel link layout for various "sections"
3 *
4 * Copyright (C) 1999-2003 Matthew Wilcox <willy at parisc-linux.org>
5 * Copyright (C) 2000-2003 Paul Bame <bame at parisc-linux.org>
6 * Copyright (C) 2000 John Marvin <jsm at parisc-linux.org>
7 * Copyright (C) 2000 Michael Ang <mang with subcarrier.org>
8 * Copyright (C) 2002 Randolph Chung <tausq with parisc-linux.org>
9 * Copyright (C) 2003 James Bottomley <jejb with parisc-linux.org>
10 * Copyright (C) 2006-2013 Helge Deller <deller@gmx.de>
11 */
12
13 /*
14 * Put page table entries (swapper_pg_dir) as the first thing in .bss. This
15 * will ensure that it has .bss alignment (PAGE_SIZE).
16 */
17 #define BSS_FIRST_SECTIONS *(.data..vm0.pmd) \
18 *(.data..vm0.pgd) \
19 *(.data..vm0.pte)
20
21 #define CC_USING_PATCHABLE_FUNCTION_ENTRY
22 #define RO_EXCEPTION_TABLE_ALIGN 8
23
24 #include <asm-generic/vmlinux.lds.h>
25
26 /* needed for the processor specific cache alignment size */
27 #include <asm/cache.h>
28 #include <asm/page.h>
29 #include <asm/asm-offsets.h>
30 #include <asm/thread_info.h>
31
32 /* ld script to make hppa Linux kernel */
33 #ifndef CONFIG_64BIT
34 OUTPUT_FORMAT("elf32-hppa-linux")
35 OUTPUT_ARCH(hppa)
36 #else
37 OUTPUT_FORMAT("elf64-hppa-linux")
38 OUTPUT_ARCH(hppa:hppa2.0w)
39 #endif
40
41 #define EXIT_TEXT_SECTIONS() .exit.text : { EXIT_TEXT }
42 #if !defined(CONFIG_64BIT) || defined(CONFIG_MLONGCALLS)
43 #define MLONGCALL_KEEP(x)
44 #define MLONGCALL_DISCARD(x) x
45 #else
46 #define MLONGCALL_KEEP(x) x
47 #define MLONGCALL_DISCARD(x)
48 #endif
49
50 ENTRY(parisc_kernel_start)
51 #ifndef CONFIG_64BIT
52 jiffies = jiffies_64 + 4;
53 #else
54 jiffies = jiffies_64;
55 #endif
56 SECTIONS
57 {
58 . = KERNEL_BINARY_TEXT_START;
59
60 __init_begin = .;
61 HEAD_TEXT_SECTION
62 MLONGCALL_DISCARD(INIT_TEXT_SECTION(8))
63
64 . = ALIGN(PAGE_SIZE);
65 INIT_DATA_SECTION(PAGE_SIZE)
66 MLONGCALL_DISCARD(EXIT_TEXT_SECTIONS())
67 .exit.data :
68 {
69 EXIT_DATA
70 }
71 PERCPU_SECTION(8)
72 . = ALIGN(4);
73 .altinstructions : {
74 __alt_instructions = .;
75 *(.altinstructions)
76 __alt_instructions_end = .;
77 }
78 . = ALIGN(HUGEPAGE_SIZE);
79 __init_end = .;
80 /* freed after init ends here */
81
82 _text = .; /* Text and read-only data */
83 _stext = .;
84 MLONGCALL_KEEP(INIT_TEXT_SECTION(8))
85 .text ALIGN(PAGE_SIZE) : {
86 TEXT_TEXT
87 LOCK_TEXT
88 SCHED_TEXT
89 KPROBES_TEXT
90 IRQENTRY_TEXT
91 SOFTIRQENTRY_TEXT
92 *(.text.do_softirq)
93 *(.text.sys_exit)
94 *(.text.do_sigaltstack)
95 *(.text.do_fork)
96 *(.text.div)
97 *($$*) /* millicode routines */
98 *(.text.*)
99 *(.fixup)
100 *(.lock.text) /* out-of-line lock text */
101 *(.gnu.warning)
102 }
103 MLONGCALL_KEEP(EXIT_TEXT_SECTIONS())
104 . = ALIGN(PAGE_SIZE);
105 _etext = .;
106 /* End of text section */
107
108 /* Start of data section */
109 _sdata = .;
110
111 /* Architecturally we need to keep __gp below 0x1000000 and thus
112 * in front of RO_DATA() which stores lots of tracepoint
113 * and ftrace symbols. */
114 #ifdef CONFIG_64BIT
115 . = ALIGN(16);
116 /* Linkage tables */
117 .opd : {
118 __start_opd = .;
119 *(.opd)
120 __end_opd = .;
121 } PROVIDE (__gp = .);
122 .plt : {
123 *(.plt)
124 }
125 .dlt : {
126 *(.dlt)
127 }
128 #endif
129
130 RO_DATA(PAGE_SIZE)
131
132 /* unwind info */
133 . = ALIGN(4);
134 .PARISC.unwind : {
135 __start___unwind = .;
136 *(.PARISC.unwind)
137 __stop___unwind = .;
138 }
139
140 /* writeable */
141 /* Make sure this is page aligned so
142 * that we can properly leave these
143 * as writable
144 */
145 . = ALIGN(HUGEPAGE_SIZE);
146 data_start = .;
147
148 /* Data */
149 RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, PAGE_SIZE)
150
151 /* PA-RISC locks requires 16-byte alignment */
152 . = ALIGN(16);
153 .data..lock_aligned : {
154 *(.data..lock_aligned)
155 }
156
157 /* End of data section */
158 . = ALIGN(PAGE_SIZE);
159 _edata = .;
160
161 /* BSS */
162 BSS_SECTION(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE)
163
164 . = ALIGN(HUGEPAGE_SIZE);
165 _end = . ;
166
167 STABS_DEBUG
168 ELF_DETAILS
169 .note 0 : { *(.note) }
170
171 /* Sections to be discarded */
172 DISCARDS
173 /DISCARD/ : {
174 #ifdef CONFIG_64BIT
175 /* temporary hack until binutils is fixed to not emit these
176 * for static binaries
177 */
178 *(.interp)
179 *(.dynsym)
180 *(.dynstr)
181 *(.dynamic)
182 *(.hash)
183 *(.gnu.hash)
184 #endif
185 }
186 }
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