aboutsummaryrefslogtreecommitdiffstats
path: root/arch/powerpc/kernel/vdso32/vdso32.lds.S
blob: 0546bcd49cd0363c317424e25359c7e08176b832 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
/*
 * This is the infamous ld script for the 32 bits vdso
 * library
 */
#include <asm/vdso.h>

OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc")
OUTPUT_ARCH(powerpc:common)
ENTRY(_start)

SECTIONS
{
	. = VDSO32_LBASE + SIZEOF_HEADERS;

	.hash          	: { *(.hash) }			:text
	.gnu.hash      	: { *(.gnu.hash) }
	.dynsym        	: { *(.dynsym) }
	.dynstr        	: { *(.dynstr) }
	.gnu.version   	: { *(.gnu.version) }
	.gnu.version_d 	: { *(.gnu.version_d) }
	.gnu.version_r 	: { *(.gnu.version_r) }

	.note		: { *(.note.*) }		:text	:note

	. = ALIGN(16);
	.text		: {
		*(.text .stub .text.* .gnu.linkonce.t.* __ftr_alt_*)
	}		      	      			:text
	PROVIDE(__etext = .);
	PROVIDE(_etext = .);
	PROVIDE(etext = .);

	. = ALIGN(8);
	__ftr_fixup	: { *(__ftr_fixup) }

	. = ALIGN(8);
	__mmu_ftr_fixup	: { *(__mmu_ftr_fixup) }

	. = ALIGN(8);
	__lwsync_fixup	: { *(__lwsync_fixup) }

#ifdef CONFIG_PPC64
	. = ALIGN(8);
	__fw_ftr_fixup	: { *(__fw_ftr_fixup) }
#endif

	/*
	 * Other stuff is appended to the text segment:
	 */
	.rodata		: { *(.rodata .rodata.* .gnu.linkonce.r.*) }
	.rodata1	: { *(.rodata1) }

	.eh_frame_hdr	: { *(.eh_frame_hdr) }		:text	:eh_frame_hdr
	.eh_frame	: { KEEP (*(.eh_frame)) }	:text
	.gcc_except_table : { *(.gcc_except_table) }
	.fixup		: { *(.fixup) }

	.dynamic	: { *(.dynamic) }		:text	:dynamic
	.got		: { *(.got) }			:text
	.plt		: { *(.plt) }

	_end = .;
	__end = .;
	PROVIDE(end = .);

	/*
	 * Stabs debugging sections are here too.
	 */
	.stab 0 : { *(.stab) }
	.stabstr 0 : { *(.stabstr) }
	.stab.excl 0 : { *(.stab.excl) }
	.stab.exclstr 0 : { *(.stab.exclstr) }
	.stab.index 0 : { *(.stab.index) }
	.stab.indexstr 0 : { *(.stab.indexstr) }
	.comment       0 : { *(.comment) }

	/*
	 * DWARF debug sections.
	 * Symbols in the DWARF debugging sections are relative to the beginning
	 * of the section so we begin them at 0.
	 */
	/* DWARF 1 */
	.debug          0 : { *(.debug) }
	.line           0 : { *(.line) }
	/* GNU DWARF 1 extensions */
	.debug_srcinfo  0 : { *(.debug_srcinfo) }
	.debug_sfnames  0 : { *(.debug_sfnames) }
	/* DWARF 1.1 and DWARF 2 */
	.debug_aranges  0 : { *(.debug_aranges) }
	.debug_pubnames 0 : { *(.debug_pubnames) }
	/* DWARF 2 */
	.debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
	.debug_abbrev   0 : { *(.debug_abbrev) }
	.debug_line     0 : { *(.debug_line) }
	.debug_frame    0 : { *(.debug_frame) }
	.debug_str      0 : { *(.debug_str) }
	.debug_loc      0 : { *(.debug_loc) }
	.debug_macinfo  0 : { *(.debug_macinfo) }
	/* SGI/MIPS DWARF 2 extensions */
	.debug_weaknames 0 : { *(.debug_weaknames) }
	.debug_funcnames 0 : { *(.debug_funcnames) }
	.debug_typenames 0 : { *(.debug_typenames) }
	.debug_varnames  0 : { *(.debug_varnames) }

	/DISCARD/	: {
		*(.note.GNU-stack)
		*(.data .data.* .gnu.linkonce.d.* .sdata*)
		*(.bss .sbss .dynbss .dynsbss)
	}
}

/*
 * Very old versions of ld do not recognize this name token; use the constant.
 */
#define PT_GNU_EH_FRAME	0x6474e550

/*
 * We must supply the ELF program headers explicitly to get just one
 * PT_LOAD segment, and set the flags explicitly to make segments read-only.
 */
PHDRS
{
	text		PT_LOAD FILEHDR PHDRS FLAGS(5);	/* PF_R|PF_X */
	dynamic		PT_DYNAMIC FLAGS(4);		/* PF_R */
	note		PT_NOTE FLAGS(4);		/* PF_R */
	eh_frame_hdr	PT_GNU_EH_FRAME;
}

/*
 * This controls what symbols we export from the DSO.
 */
VERSION
{
	VDSO_VERSION_STRING {
	global:
		/*
		 * Has to be there for the kernel to find
		 */
		__kernel_datapage_offset;

		__kernel_get_syscall_map;
		__kernel_gettimeofday;
		__kernel_clock_gettime;
		__kernel_clock_getres;
		__kernel_get_tbfreq;
		__kernel_sync_dicache;
		__kernel_sync_dicache_p5;
		__kernel_sigtramp32;
		__kernel_sigtramp_rt32;

	local: *;
	};
}