xref: /linux/arch/x86/boot/compressed/vmlinux.lds.S (revision 4b660dbd9ee2059850fd30e0df420ca7a38a1856) 
1/* SPDX-License-Identifier: GPL-2.0 */
2#include <asm-generic/vmlinux.lds.h>
3
4OUTPUT_FORMAT(CONFIG_OUTPUT_FORMAT)
5
6#undef i386
7
8#include <asm/cache.h>
9#include <asm/page_types.h>
10
11#ifdef CONFIG_X86_64
12OUTPUT_ARCH(i386:x86-64)
13ENTRY(startup_64)
14#else
15OUTPUT_ARCH(i386)
16ENTRY(startup_32)
17#endif
18
19SECTIONS
20{
21	/* Be careful parts of head_64.S assume startup_32 is at
22	 * address 0.
23	 */
24	. = 0;
25	.head.text : {
26		_head = . ;
27		HEAD_TEXT
28		_ehead = . ;
29	}
30	.rodata..compressed : {
31		*(.rodata..compressed)
32	}
33	.text :	{
34		_text = .; 	/* Text */
35		*(.text)
36		*(.text.*)
37		*(.noinstr.text)
38		_etext = . ;
39	}
40	.rodata : {
41		_rodata = . ;
42		*(.rodata)	 /* read-only data */
43		*(.rodata.*)
44		_erodata = . ;
45	}
46	.data :	ALIGN(0x1000) {
47		_data = . ;
48		*(.data)
49		*(.data.*)
50
51		/* Add 4 bytes of extra space for a CRC-32 checksum */
52		. = ALIGN(. + 4, 0x200);
53		_edata = . ;
54	}
55	. = ALIGN(L1_CACHE_BYTES);
56	.bss : {
57		_bss = . ;
58		*(.bss)
59		*(.bss.*)
60		*(COMMON)
61		. = ALIGN(8);	/* For convenience during zeroing */
62		_ebss = .;
63	}
64#ifdef CONFIG_X86_64
65       . = ALIGN(PAGE_SIZE);
66       .pgtable : {
67		_pgtable = . ;
68		*(.pgtable)
69		_epgtable = . ;
70	}
71#endif
72	. = ALIGN(PAGE_SIZE);	/* keep ZO size page aligned */
73	_end = .;
74
75	STABS_DEBUG
76	DWARF_DEBUG
77	ELF_DETAILS
78
79	DISCARDS
80	/DISCARD/ : {
81		*(.dynamic) *(.dynsym) *(.dynstr) *(.dynbss)
82		*(.hash) *(.gnu.hash)
83		*(.note.*)
84	}
85
86	.got.plt (INFO) : {
87		*(.got.plt)
88	}
89	ASSERT(SIZEOF(.got.plt) == 0 ||
90#ifdef CONFIG_X86_64
91	       SIZEOF(.got.plt) == 0x18,
92#else
93	       SIZEOF(.got.plt) == 0xc,
94#endif
95	       "Unexpected GOT/PLT entries detected!")
96
97	/*
98	 * Sections that should stay zero sized, which is safer to
99	 * explicitly check instead of blindly discarding.
100	 */
101	.got : {
102		*(.got)
103	}
104	ASSERT(SIZEOF(.got) == 0, "Unexpected GOT entries detected!")
105
106	.plt : {
107		*(.plt) *(.plt.*)
108	}
109	ASSERT(SIZEOF(.plt) == 0, "Unexpected run-time procedure linkages detected!")
110
111	.rel.dyn : {
112		*(.rel.*) *(.rel_*)
113	}
114	ASSERT(SIZEOF(.rel.dyn) == 0, "Unexpected run-time relocations (.rel) detected!")
115
116	.rela.dyn : {
117		*(.rela.*) *(.rela_*)
118	}
119	ASSERT(SIZEOF(.rela.dyn) == 0, "Unexpected run-time relocations (.rela) detected!")
120}
121