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
23 #include <asm-generic/vmlinux.lds.h>
24
25 /* needed for the processor specific cache alignment size */
26 #include <asm/cache.h>
27 #include <asm/page.h>
28 #include <asm/asm-offsets.h>
29 #include <asm/thread_info.h>
30
31 /* ld script to make hppa Linux kernel */
32 #ifndef CONFIG_64BIT
33 OUTPUT_FORMAT("elf32-hppa-linux")
34 OUTPUT_ARCH(hppa)
35 #else
36 OUTPUT_FORMAT("elf64-hppa-linux")
37 OUTPUT_ARCH(hppa:hppa2.0w)
38 #endif
39
40 #define EXIT_TEXT_SECTIONS() .exit.text : { EXIT_TEXT }
41 #if !defined(CONFIG_64BIT) || defined(CONFIG_MLONGCALLS)
42 #define MLONGCALL_KEEP(x)
43 #define MLONGCALL_DISCARD(x) x
44 #else
45 #define MLONGCALL_KEEP(x) x
46 #define MLONGCALL_DISCARD(x)
47 #endif
48
49 ENTRY(parisc_kernel_start)
50 #ifndef CONFIG_64BIT
51 jiffies = jiffies_64 + 4;
52 #else
53 jiffies = jiffies_64;
54 #endif
55 SECTIONS
56 {
57 . = KERNEL_BINARY_TEXT_START;
58
59 __init_begin = .;
60 HEAD_TEXT_SECTION
61 MLONGCALL_DISCARD(INIT_TEXT_SECTION(8))
62
63 . = ALIGN(PAGE_SIZE);
64 INIT_DATA_SECTION(PAGE_SIZE)
65 MLONGCALL_DISCARD(EXIT_TEXT_SECTIONS())
66 .exit.data :
67 {
68 EXIT_DATA
69 }
70 PERCPU_SECTION(8)
71 . = ALIGN(4);
72 .altinstructions : {
73 __alt_instructions = .;
74 *(.altinstructions)
75 __alt_instructions_end = .;
76 }
77 . = ALIGN(HUGEPAGE_SIZE);
78 __init_end = .;
79 /* freed after init ends here */
80
81 _text = .; /* Text and read-only data */
82 _stext = .;
83 MLONGCALL_KEEP(INIT_TEXT_SECTION(8))
84 .text ALIGN(PAGE_SIZE) : {
85 TEXT_TEXT
86 LOCK_TEXT
87 SCHED_TEXT
88 CPUIDLE_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_SECTION() 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_SECTION(8)
131
132 /* RO because of BUILDTIME_EXTABLE_SORT */
133 EXCEPTION_TABLE(8)
134 NOTES
135
136 /* unwind info */
137 .PARISC.unwind : {
138 __start___unwind = .;
139 *(.PARISC.unwind)
140 __stop___unwind = .;
141 }
142
143 /* writeable */
144 /* Make sure this is page aligned so
145 * that we can properly leave these
146 * as writable
147 */
148 . = ALIGN(HUGEPAGE_SIZE);
149 data_start = .;
150
151 /* Data */
152 RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, PAGE_SIZE)
153
154 /* PA-RISC locks requires 16-byte alignment */
155 . = ALIGN(16);
156 .data..lock_aligned : {
157 *(.data..lock_aligned)
158 }
159
160 /* End of data section */
161 _edata = .;
162
163 /* BSS */
164 BSS_SECTION(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE)
165
166 . = ALIGN(HUGEPAGE_SIZE);
167 _end = . ;
168
169 STABS_DEBUG
170 .note 0 : { *(.note) }
171
172 /* Sections to be discarded */
173 DISCARDS
174 /DISCARD/ : {
175 #ifdef CONFIG_64BIT
176 /* temporary hack until binutils is fixed to not emit these
177 * for static binaries
178 */
179 *(.interp)
180 *(.dynsym)
181 *(.dynstr)
182 *(.dynamic)
183 *(.hash)
184 *(.gnu.hash)
185 #endif
186 }
187 }