projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| ebb5e78c AS |
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 <linux/elfnote.h> | |
| 14 | #include <linux/version.h> | |
| 15 | ||
| 16 | ELFNOTE_START(Linux, 0, "a") | |
| 17 | .long LINUX_VERSION_CODE | |
| 18 | ELFNOTE_END | |
| 19 | ||
| 20 | /* | |
| 21 | * The .MIPS.abiflags section must be defined with the FP ABI flags set | |
| 22 | * to 'any' to be able to link with both old and new libraries. | |
| 23 | * Newer toolchains are capable of automatically generating this, but we want | |
| 24 | * to work with older toolchains as well. Therefore, we define the contents of | |
| 25 | * this section here (under different names), and then genvdso will patch | |
| 26 | * it to have the correct name and type. | |
| 27 | * | |
| 28 | * We base the .MIPS.abiflags section on preprocessor definitions rather than | |
| 29 | * CONFIG_* because we need to match the particular ABI we are building the | |
| 30 | * VDSO for. | |
| 31 | * | |
| 32 | * See https://dmz-portal.mips.com/wiki/MIPS_O32_ABI_-_FR0_and_FR1_Interlinking | |
| 33 | * for the .MIPS.abiflags section description. | |
| 34 | */ | |
| 35 | ||
| 36 | .section .mips_abiflags, "a" | |
| 37 | .align 3 | |
| 38 | __mips_abiflags: | |
| 39 | .hword 0 /* version */ | |
| 40 | .byte __mips /* isa_level */ | |
| 41 | ||
| 42 | /* isa_rev */ | |
| 43 | #ifdef __mips_isa_rev | |
| 44 | .byte __mips_isa_rev | |
| 45 | #else | |
| 46 | .byte 0 | |
| 47 | #endif | |
| 48 | ||
| 49 | /* gpr_size */ | |
| 50 | #ifdef __mips64 | |
| 51 | .byte 2 /* AFL_REG_64 */ | |
| 52 | #else | |
| 53 | .byte 1 /* AFL_REG_32 */ | |
| 54 | #endif | |
| 55 | ||
| 56 | /* cpr1_size */ | |
| 57 | #if (defined(__mips_isa_rev) && __mips_isa_rev >= 6) || defined(__mips64) | |
| 58 | .byte 2 /* AFL_REG_64 */ | |
| 59 | #else | |
| 60 | .byte 1 /* AFL_REG_32 */ | |
| 61 | #endif | |
| 62 | ||
| 63 | .byte 0 /* cpr2_size (AFL_REG_NONE) */ | |
| 64 | .byte 0 /* fp_abi (Val_GNU_MIPS_ABI_FP_ANY) */ | |
| 65 | .word 0 /* isa_ext */ | |
| 66 | .word 0 /* ases */ | |
| 67 | .word 0 /* flags1 */ | |
| 68 | .word 0 /* flags2 */ |