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 * !! 4 * Author: Alex Smith <alex.smith@imgtec.com>
5 * Copyright (C) 2020-2022 Loongson Technology <<
6 */ 5 */
7 6
8 #include <asm/vdso/vdso.h> 7 #include <asm/vdso/vdso.h>
9 8
>> 9 #include <asm/isa-rev.h>
>> 10
10 #include <linux/elfnote.h> 11 #include <linux/elfnote.h>
11 #include <linux/version.h> 12 #include <linux/version.h>
12 13
13 ELFNOTE_START(Linux, 0, "a") 14 ELFNOTE_START(Linux, 0, "a")
14 .long LINUX_VERSION_CODE 15 .long LINUX_VERSION_CODE
15 ELFNOTE_END 16 ELFNOTE_END
>> 17
>> 18 /*
>> 19 * The .MIPS.abiflags section must be defined with the FP ABI flags set
>> 20 * to 'any' to be able to link with both old and new libraries.
>> 21 * Newer toolchains are capable of automatically generating this, but we want
>> 22 * to work with older toolchains as well. Therefore, we define the contents of
>> 23 * this section here (under different names), and then genvdso will patch
>> 24 * it to have the correct name and type.
>> 25 *
>> 26 * We base the .MIPS.abiflags section on preprocessor definitions rather than
>> 27 * CONFIG_* because we need to match the particular ABI we are building the
>> 28 * VDSO for.
>> 29 *
>> 30 * See https://dmz-portal.mips.com/wiki/MIPS_O32_ABI_-_FR0_and_FR1_Interlinking
>> 31 * for the .MIPS.abiflags section description.
>> 32 */
>> 33
>> 34 .section .mips_abiflags, "a"
>> 35 .align 3
>> 36 __mips_abiflags:
>> 37 .hword 0 /* version */
>> 38 .byte __mips /* isa_level */
>> 39
>> 40 /* isa_rev */
>> 41 .byte MIPS_ISA_REV
>> 42
>> 43 /* gpr_size */
>> 44 #ifdef __mips64
>> 45 .byte 2 /* AFL_REG_64 */
>> 46 #else
>> 47 .byte 1 /* AFL_REG_32 */
>> 48 #endif
>> 49
>> 50 /* cpr1_size */
>> 51 #if (MIPS_ISA_REV >= 6) || defined(__mips64)
>> 52 .byte 2 /* AFL_REG_64 */
>> 53 #else
>> 54 .byte 1 /* AFL_REG_32 */
>> 55 #endif
>> 56
>> 57 .byte 0 /* cpr2_size (AFL_REG_NONE) */
>> 58 .byte 0 /* fp_abi (Val_GNU_MIPS_ABI_FP_ANY) */
>> 59 .word 0 /* isa_ext */
>> 60 .word 0 /* ases */
>> 61 .word 0 /* flags1 */
>> 62 .word 0 /* flags2 */
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