1/* 2 * Copyright (C) 2015 Imagination Technologies 3 * Author: Alex Smith <alex.smith@imgtec.com> 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License as published by the 7 * Free Software Foundation; either version 2 of the License, or (at your 8 * option) any later version. 9 */ 10 11#include "vdso.h" 12 13#include <asm/isa-rev.h> 14 15#include <linux/elfnote.h> 16#include <linux/version.h> 17 18ELFNOTE_START(Linux, 0, "a") 19 .long LINUX_VERSION_CODE 20ELFNOTE_END 21 22/* 23 * The .MIPS.abiflags section must be defined with the FP ABI flags set 24 * to 'any' to be able to link with both old and new libraries. 25 * Newer toolchains are capable of automatically generating this, but we want 26 * to work with older toolchains as well. Therefore, we define the contents of 27 * this section here (under different names), and then genvdso will patch 28 * it to have the correct name and type. 29 * 30 * We base the .MIPS.abiflags section on preprocessor definitions rather than 31 * CONFIG_* because we need to match the particular ABI we are building the 32 * VDSO for. 33 * 34 * See https://dmz-portal.mips.com/wiki/MIPS_O32_ABI_-_FR0_and_FR1_Interlinking 35 * for the .MIPS.abiflags section description. 36 */ 37 38 .section .mips_abiflags, "a" 39 .align 3 40__mips_abiflags: 41 .hword 0 /* version */ 42 .byte __mips /* isa_level */ 43 44 /* isa_rev */ 45 .byte MIPS_ISA_REV 46 47 /* gpr_size */ 48#ifdef __mips64 49 .byte 2 /* AFL_REG_64 */ 50#else 51 .byte 1 /* AFL_REG_32 */ 52#endif 53 54 /* cpr1_size */ 55#if (MIPS_ISA_REV >= 6) || defined(__mips64) 56 .byte 2 /* AFL_REG_64 */ 57#else 58 .byte 1 /* AFL_REG_32 */ 59#endif 60 61 .byte 0 /* cpr2_size (AFL_REG_NONE) */ 62 .byte 0 /* fp_abi (Val_GNU_MIPS_ABI_FP_ANY) */ 63 .word 0 /* isa_ext */ 64 .word 0 /* ases */ 65 .word 0 /* flags1 */ 66 .word 0 /* flags2 */ 67