1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Copyright (C) 2015 Imagination Technologies
4 * Author: Alex Smith <alex.smith@imgtec.com>
5 */
6
7#include <asm/vdso/vdso.h>
8
9#include <asm/isa-rev.h>
10
11#include <linux/elfnote.h>
12#include <linux/version.h>
13
14ELFNOTE_START(Linux, 0, "a")
15	.long LINUX_VERSION_CODE
16ELFNOTE_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 */
63