1 /* SPDX-License-Identifier: GPL-2.0 */ !! 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /* 2 /*
3 * Author: Huacai Chen <chenhuacai@loongson.cn> !! 3 * Copyright (C) 2015 Imagination Technologies
4 * Copyright (C) 2020-2022 Loongson Technology !! 4 * Author: Alex Smith <alex.smith@imgtec.com>
5 */ 5 */
6 6
7 OUTPUT_FORMAT("elf64-loongarch", "elf64-loonga !! 7 #include <asm/sgidefs.h>
8 8
9 OUTPUT_ARCH(loongarch) !! 9 #if _MIPS_SIM == _MIPS_SIM_ABI64
>> 10 OUTPUT_FORMAT("elf64-tradlittlemips", "elf64-tradbigmips", "elf64-tradlittlemips")
>> 11 #elif _MIPS_SIM == _MIPS_SIM_NABI32
>> 12 OUTPUT_FORMAT("elf32-ntradlittlemips", "elf32-ntradbigmips", "elf32-ntradlittlemips")
>> 13 #else
>> 14 OUTPUT_FORMAT("elf32-tradlittlemips", "elf32-tradbigmips", "elf32-tradlittlemips")
>> 15 #endif
>> 16
>> 17 OUTPUT_ARCH(mips)
10 18
11 SECTIONS 19 SECTIONS
12 { 20 {
13 PROVIDE(_start = .); 21 PROVIDE(_start = .);
14 . = SIZEOF_HEADERS; 22 . = SIZEOF_HEADERS;
15 23
>> 24 /*
>> 25 * In order to retain compatibility with older toolchains we provide the
>> 26 * ABI flags section ourself. Newer assemblers will automatically
>> 27 * generate .MIPS.abiflags sections so we discard such input sections,
>> 28 * and then manually define our own section here. genvdso will patch
>> 29 * this section to have the correct name/type.
>> 30 */
>> 31 .mips_abiflags : { *(.mips_abiflags) } :text :abiflags
>> 32
>> 33 .reginfo : { *(.reginfo) } :text :reginfo
>> 34
16 .hash : { *(.hash) } 35 .hash : { *(.hash) } :text
17 .gnu.hash : { *(.gnu.hash) } 36 .gnu.hash : { *(.gnu.hash) }
18 .dynsym : { *(.dynsym) } 37 .dynsym : { *(.dynsym) }
19 .dynstr : { *(.dynstr) } 38 .dynstr : { *(.dynstr) }
20 .gnu.version : { *(.gnu.version) } 39 .gnu.version : { *(.gnu.version) }
21 .gnu.version_d : { *(.gnu.version_d) 40 .gnu.version_d : { *(.gnu.version_d) }
22 .gnu.version_r : { *(.gnu.version_r) 41 .gnu.version_r : { *(.gnu.version_r) }
23 42
24 .note : { *(.note.*) } 43 .note : { *(.note.*) } :text :note
25 44
26 .text : { *(.text*) } 45 .text : { *(.text*) } :text
27 PROVIDE (__etext = .); 46 PROVIDE (__etext = .);
28 PROVIDE (_etext = .); 47 PROVIDE (_etext = .);
29 PROVIDE (etext = .); 48 PROVIDE (etext = .);
30 49
31 .eh_frame_hdr : { *(.eh_frame_hdr) } 50 .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr
32 .eh_frame : { KEEP (*(.eh_frame) 51 .eh_frame : { KEEP (*(.eh_frame)) } :text
33 52
34 .dynamic : { *(.dynamic) } 53 .dynamic : { *(.dynamic) } :text :dynamic
35 54
36 .rodata : { *(.rodata*) } 55 .rodata : { *(.rodata*) } :text
37 56
38 _end = .; 57 _end = .;
39 PROVIDE(end = .); 58 PROVIDE(end = .);
40 59
41 /DISCARD/ : { 60 /DISCARD/ : {
>> 61 *(.MIPS.abiflags)
42 *(.gnu.attributes) 62 *(.gnu.attributes)
43 *(.note.GNU-stack) 63 *(.note.GNU-stack)
44 *(.data .data.* .gnu.linkonce. 64 *(.data .data.* .gnu.linkonce.d.* .sdata*)
45 *(.bss .sbss .dynbss .dynsbss) 65 *(.bss .sbss .dynbss .dynsbss)
46 } 66 }
47 } 67 }
48 68
49 PHDRS 69 PHDRS
50 { 70 {
>> 71 /*
>> 72 * Provide a PT_MIPS_ABIFLAGS header to assign the ABI flags section
>> 73 * to. We can specify the header type directly here so no modification
>> 74 * is needed later on.
>> 75 */
>> 76 abiflags 0x70000003;
>> 77
>> 78 /*
>> 79 * The ABI flags header must exist directly after the PT_INTERP header,
>> 80 * so we must explicitly place the PT_MIPS_REGINFO header after it to
>> 81 * stop the linker putting one in at the start.
>> 82 */
>> 83 reginfo 0x70000000;
>> 84
51 text PT_LOAD FLAGS( 85 text PT_LOAD FLAGS(5) FILEHDR PHDRS; /* PF_R|PF_X */
52 dynamic PT_DYNAMIC FLAGS( 86 dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
53 note PT_NOTE FLAGS( 87 note PT_NOTE FLAGS(4); /* PF_R */
54 eh_frame_hdr PT_GNU_EH_FRAME; 88 eh_frame_hdr PT_GNU_EH_FRAME;
55 } 89 }
56 90
57 VERSION 91 VERSION
58 { 92 {
59 LINUX_5.10 { !! 93 LINUX_2.6 {
>> 94 #ifndef CONFIG_MIPS_DISABLE_VDSO
60 global: 95 global:
61 __vdso_getcpu; <<
62 __vdso_clock_getres; <<
63 __vdso_clock_gettime; 96 __vdso_clock_gettime;
>> 97 #ifdef CONFIG_MIPS_CLOCK_VSYSCALL
64 __vdso_gettimeofday; 98 __vdso_gettimeofday;
65 __vdso_getrandom; !! 99 #endif
66 __vdso_rt_sigreturn; !! 100 __vdso_clock_getres;
>> 101 #if _MIPS_SIM != _MIPS_SIM_ABI64
>> 102 __vdso_clock_gettime64;
>> 103 #endif
>> 104 #endif
67 local: *; 105 local: *;
68 }; 106 };
69 } 107 }
70 <<
71 /* <<
72 * Make the sigreturn code visible to the kern <<
73 */ <<
74 VDSO_sigreturn = __vdso_rt_sigreturn; <<
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.