517 lines
15 KiB
C
Executable file
517 lines
15 KiB
C
Executable file
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Much of this is taken from binutils and GNU libc ...
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*/
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#ifndef _ASM_ELF_H
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#define _ASM_ELF_H
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#include <linux/auxvec.h>
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#include <linux/fs.h>
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#include <linux/mm_types.h>
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#include <uapi/linux/elf.h>
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#include <asm/current.h>
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/* ELF header e_flags defines. */
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/* MIPS architecture level. */
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#define EF_MIPS_ARCH_1 0x00000000 /* -mips1 code. */
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#define EF_MIPS_ARCH_2 0x10000000 /* -mips2 code. */
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#define EF_MIPS_ARCH_3 0x20000000 /* -mips3 code. */
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#define EF_MIPS_ARCH_4 0x30000000 /* -mips4 code. */
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#define EF_MIPS_ARCH_5 0x40000000 /* -mips5 code. */
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#define EF_MIPS_ARCH_32 0x50000000 /* MIPS32 code. */
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#define EF_MIPS_ARCH_64 0x60000000 /* MIPS64 code. */
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#define EF_MIPS_ARCH_32R2 0x70000000 /* MIPS32 R2 code. */
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#define EF_MIPS_ARCH_64R2 0x80000000 /* MIPS64 R2 code. */
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/* The ABI of a file. */
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#define EF_MIPS_ABI_O32 0x00001000 /* O32 ABI. */
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#define EF_MIPS_ABI_O64 0x00002000 /* O32 extended for 64 bit. */
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#define PT_MIPS_REGINFO 0x70000000
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#define PT_MIPS_RTPROC 0x70000001
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#define PT_MIPS_OPTIONS 0x70000002
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#define PT_MIPS_ABIFLAGS 0x70000003
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/* Flags in the e_flags field of the header */
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#define EF_MIPS_NOREORDER 0x00000001
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#define EF_MIPS_PIC 0x00000002
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#define EF_MIPS_CPIC 0x00000004
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#define EF_MIPS_ABI2 0x00000020
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#define EF_MIPS_OPTIONS_FIRST 0x00000080
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#define EF_MIPS_32BITMODE 0x00000100
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#define EF_MIPS_FP64 0x00000200
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#define EF_MIPS_NAN2008 0x00000400
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#define EF_MIPS_ABI 0x0000f000
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#define EF_MIPS_ARCH 0xf0000000
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#define DT_MIPS_RLD_VERSION 0x70000001
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#define DT_MIPS_TIME_STAMP 0x70000002
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#define DT_MIPS_ICHECKSUM 0x70000003
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#define DT_MIPS_IVERSION 0x70000004
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#define DT_MIPS_FLAGS 0x70000005
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#define RHF_NONE 0x00000000
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#define RHF_HARDWAY 0x00000001
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#define RHF_NOTPOT 0x00000002
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#define RHF_SGI_ONLY 0x00000010
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#define DT_MIPS_BASE_ADDRESS 0x70000006
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#define DT_MIPS_CONFLICT 0x70000008
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#define DT_MIPS_LIBLIST 0x70000009
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#define DT_MIPS_LOCAL_GOTNO 0x7000000a
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#define DT_MIPS_CONFLICTNO 0x7000000b
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#define DT_MIPS_LIBLISTNO 0x70000010
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#define DT_MIPS_SYMTABNO 0x70000011
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#define DT_MIPS_UNREFEXTNO 0x70000012
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#define DT_MIPS_GOTSYM 0x70000013
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#define DT_MIPS_HIPAGENO 0x70000014
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#define DT_MIPS_RLD_MAP 0x70000016
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#define R_MIPS_NONE 0
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#define R_MIPS_16 1
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#define R_MIPS_32 2
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#define R_MIPS_REL32 3
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#define R_MIPS_26 4
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#define R_MIPS_HI16 5
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#define R_MIPS_LO16 6
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#define R_MIPS_GPREL16 7
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#define R_MIPS_LITERAL 8
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#define R_MIPS_GOT16 9
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#define R_MIPS_PC16 10
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#define R_MIPS_CALL16 11
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#define R_MIPS_GPREL32 12
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/* The remaining relocs are defined on Irix, although they are not
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in the MIPS ELF ABI. */
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#define R_MIPS_UNUSED1 13
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#define R_MIPS_UNUSED2 14
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#define R_MIPS_UNUSED3 15
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#define R_MIPS_SHIFT5 16
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#define R_MIPS_SHIFT6 17
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#define R_MIPS_64 18
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#define R_MIPS_GOT_DISP 19
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#define R_MIPS_GOT_PAGE 20
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#define R_MIPS_GOT_OFST 21
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/*
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* The following two relocation types are specified in the MIPS ABI
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* conformance guide version 1.2 but not yet in the psABI.
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*/
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#define R_MIPS_GOTHI16 22
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#define R_MIPS_GOTLO16 23
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#define R_MIPS_SUB 24
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#define R_MIPS_INSERT_A 25
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#define R_MIPS_INSERT_B 26
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#define R_MIPS_DELETE 27
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#define R_MIPS_HIGHER 28
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#define R_MIPS_HIGHEST 29
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/*
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* The following two relocation types are specified in the MIPS ABI
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* conformance guide version 1.2 but not yet in the psABI.
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*/
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#define R_MIPS_CALLHI16 30
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#define R_MIPS_CALLLO16 31
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/*
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* Introduced for MIPSr6.
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*/
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#define R_MIPS_PC21_S2 60
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#define R_MIPS_PC26_S2 61
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/*
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* This range is reserved for vendor specific relocations.
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*/
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#define R_MIPS_LOVENDOR 100
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#define R_MIPS_HIVENDOR 127
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#define SHN_MIPS_ACCOMON 0xff00 /* Allocated common symbols */
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#define SHN_MIPS_TEXT 0xff01 /* Allocated test symbols. */
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#define SHN_MIPS_DATA 0xff02 /* Allocated data symbols. */
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#define SHN_MIPS_SCOMMON 0xff03 /* Small common symbols */
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#define SHN_MIPS_SUNDEFINED 0xff04 /* Small undefined symbols */
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#define SHT_MIPS_LIST 0x70000000
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#define SHT_MIPS_CONFLICT 0x70000002
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#define SHT_MIPS_GPTAB 0x70000003
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#define SHT_MIPS_UCODE 0x70000004
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#define SHT_MIPS_DEBUG 0x70000005
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#define SHT_MIPS_REGINFO 0x70000006
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#define SHT_MIPS_PACKAGE 0x70000007
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#define SHT_MIPS_PACKSYM 0x70000008
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#define SHT_MIPS_RELD 0x70000009
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#define SHT_MIPS_IFACE 0x7000000b
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#define SHT_MIPS_CONTENT 0x7000000c
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#define SHT_MIPS_OPTIONS 0x7000000d
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#define SHT_MIPS_SHDR 0x70000010
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#define SHT_MIPS_FDESC 0x70000011
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#define SHT_MIPS_EXTSYM 0x70000012
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#define SHT_MIPS_DENSE 0x70000013
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#define SHT_MIPS_PDESC 0x70000014
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#define SHT_MIPS_LOCSYM 0x70000015
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#define SHT_MIPS_AUXSYM 0x70000016
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#define SHT_MIPS_OPTSYM 0x70000017
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#define SHT_MIPS_LOCSTR 0x70000018
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#define SHT_MIPS_LINE 0x70000019
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#define SHT_MIPS_RFDESC 0x7000001a
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#define SHT_MIPS_DELTASYM 0x7000001b
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#define SHT_MIPS_DELTAINST 0x7000001c
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#define SHT_MIPS_DELTACLASS 0x7000001d
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#define SHT_MIPS_DWARF 0x7000001e
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#define SHT_MIPS_DELTADECL 0x7000001f
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#define SHT_MIPS_SYMBOL_LIB 0x70000020
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#define SHT_MIPS_EVENTS 0x70000021
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#define SHT_MIPS_TRANSLATE 0x70000022
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#define SHT_MIPS_PIXIE 0x70000023
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#define SHT_MIPS_XLATE 0x70000024
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#define SHT_MIPS_XLATE_DEBUG 0x70000025
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#define SHT_MIPS_WHIRL 0x70000026
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#define SHT_MIPS_EH_REGION 0x70000027
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#define SHT_MIPS_XLATE_OLD 0x70000028
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#define SHT_MIPS_PDR_EXCEPTION 0x70000029
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#define SHF_MIPS_GPREL 0x10000000
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#define SHF_MIPS_MERGE 0x20000000
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#define SHF_MIPS_ADDR 0x40000000
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#define SHF_MIPS_STRING 0x80000000
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#define SHF_MIPS_NOSTRIP 0x08000000
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#define SHF_MIPS_LOCAL 0x04000000
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#define SHF_MIPS_NAMES 0x02000000
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#define SHF_MIPS_NODUPES 0x01000000
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#define MIPS_ABI_FP_ANY 0 /* FP ABI doesn't matter */
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#define MIPS_ABI_FP_DOUBLE 1 /* -mdouble-float */
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#define MIPS_ABI_FP_SINGLE 2 /* -msingle-float */
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#define MIPS_ABI_FP_SOFT 3 /* -msoft-float */
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#define MIPS_ABI_FP_OLD_64 4 /* -mips32r2 -mfp64 */
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#define MIPS_ABI_FP_XX 5 /* -mfpxx */
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#define MIPS_ABI_FP_64 6 /* -mips32r2 -mfp64 */
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#define MIPS_ABI_FP_64A 7 /* -mips32r2 -mfp64 -mno-odd-spreg */
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struct mips_elf_abiflags_v0 {
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uint16_t version; /* Version of flags structure */
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uint8_t isa_level; /* The level of the ISA: 1-5, 32, 64 */
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uint8_t isa_rev; /* The revision of ISA: 0 for MIPS V and below,
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1-n otherwise */
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uint8_t gpr_size; /* The size of general purpose registers */
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uint8_t cpr1_size; /* The size of co-processor 1 registers */
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uint8_t cpr2_size; /* The size of co-processor 2 registers */
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uint8_t fp_abi; /* The floating-point ABI */
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uint32_t isa_ext; /* Mask of processor-specific extensions */
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uint32_t ases; /* Mask of ASEs used */
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uint32_t flags1; /* Mask of general flags */
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uint32_t flags2;
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};
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#ifndef ELF_ARCH
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/* ELF register definitions */
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#define ELF_NGREG 45
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#define ELF_NFPREG 33
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typedef unsigned long elf_greg_t;
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typedef elf_greg_t elf_gregset_t[ELF_NGREG];
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typedef double elf_fpreg_t;
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typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
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void mips_dump_regs32(u32 *uregs, const struct pt_regs *regs);
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void mips_dump_regs64(u64 *uregs, const struct pt_regs *regs);
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#ifdef CONFIG_32BIT
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/*
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* This is used to ensure we don't load something for the wrong architecture.
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*/
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#define elf_check_arch elfo32_check_arch
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/*
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* These are used to set parameters in the core dumps.
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*/
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#define ELF_CLASS ELFCLASS32
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#define ELF_CORE_COPY_REGS(dest, regs) \
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mips_dump_regs32((u32 *)&(dest), (regs));
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#endif /* CONFIG_32BIT */
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#ifdef CONFIG_64BIT
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/*
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* This is used to ensure we don't load something for the wrong architecture.
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*/
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#define elf_check_arch elfn64_check_arch
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/*
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* These are used to set parameters in the core dumps.
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*/
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#define ELF_CLASS ELFCLASS64
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#define ELF_CORE_COPY_REGS(dest, regs) \
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mips_dump_regs64((u64 *)&(dest), (regs));
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#endif /* CONFIG_64BIT */
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/*
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* These are used to set parameters in the core dumps.
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*/
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#ifdef __MIPSEB__
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#define ELF_DATA ELFDATA2MSB
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#elif defined(__MIPSEL__)
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#define ELF_DATA ELFDATA2LSB
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#endif
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#define ELF_ARCH EM_MIPS
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#endif /* !defined(ELF_ARCH) */
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/*
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* In order to be sure that we don't attempt to execute an O32 binary which
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* requires 64 bit FP (FR=1) on a system which does not support it we refuse
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* to execute any binary which has bits specified by the following macro set
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* in its ELF header flags.
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*/
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#ifdef CONFIG_MIPS_O32_FP64_SUPPORT
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# define __MIPS_O32_FP64_MUST_BE_ZERO 0
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#else
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# define __MIPS_O32_FP64_MUST_BE_ZERO EF_MIPS_FP64
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#endif
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#define mips_elf_check_machine(x) ((x)->e_machine == EM_MIPS)
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#define vmcore_elf32_check_arch mips_elf_check_machine
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#define vmcore_elf64_check_arch mips_elf_check_machine
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/*
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* Return non-zero if HDR identifies an o32 ELF binary.
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*/
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#define elfo32_check_arch(hdr) \
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({ \
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int __res = 1; \
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struct elfhdr *__h = (hdr); \
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\
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if (!mips_elf_check_machine(__h)) \
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__res = 0; \
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if (__h->e_ident[EI_CLASS] != ELFCLASS32) \
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__res = 0; \
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if ((__h->e_flags & EF_MIPS_ABI2) != 0) \
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__res = 0; \
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if (((__h->e_flags & EF_MIPS_ABI) != 0) && \
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((__h->e_flags & EF_MIPS_ABI) != EF_MIPS_ABI_O32)) \
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__res = 0; \
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if (__h->e_flags & __MIPS_O32_FP64_MUST_BE_ZERO) \
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__res = 0; \
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\
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__res; \
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})
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/*
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* Return non-zero if HDR identifies an n64 ELF binary.
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*/
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#define elfn64_check_arch(hdr) \
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({ \
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int __res = 1; \
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struct elfhdr *__h = (hdr); \
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\
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if (!mips_elf_check_machine(__h)) \
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__res = 0; \
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if (__h->e_ident[EI_CLASS] != ELFCLASS64) \
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__res = 0; \
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\
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__res; \
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})
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/*
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* Return non-zero if HDR identifies an n32 ELF binary.
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*/
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#define elfn32_check_arch(hdr) \
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({ \
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int __res = 1; \
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struct elfhdr *__h = (hdr); \
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\
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if (!mips_elf_check_machine(__h)) \
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__res = 0; \
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if (__h->e_ident[EI_CLASS] != ELFCLASS32) \
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__res = 0; \
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if (((__h->e_flags & EF_MIPS_ABI2) == 0) || \
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((__h->e_flags & EF_MIPS_ABI) != 0)) \
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__res = 0; \
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\
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__res; \
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})
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struct mips_abi;
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extern struct mips_abi mips_abi;
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extern struct mips_abi mips_abi_32;
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extern struct mips_abi mips_abi_n32;
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#ifdef CONFIG_32BIT
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#define SET_PERSONALITY2(ex, state) \
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do { \
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clear_thread_flag(TIF_HYBRID_FPREGS); \
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set_thread_flag(TIF_32BIT_FPREGS); \
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\
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current->thread.abi = &mips_abi; \
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\
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mips_set_personality_fp(state); \
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mips_set_personality_nan(state); \
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\
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if (personality(current->personality) != PER_LINUX) \
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set_personality(PER_LINUX); \
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} while (0)
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#endif /* CONFIG_32BIT */
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#ifdef CONFIG_64BIT
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#ifdef CONFIG_MIPS32_N32
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#define __SET_PERSONALITY32_N32() \
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do { \
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set_thread_flag(TIF_32BIT_ADDR); \
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\
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current->thread.abi = &mips_abi_n32; \
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} while (0)
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#else
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#define __SET_PERSONALITY32_N32() \
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do { } while (0)
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#endif
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#ifdef CONFIG_MIPS32_O32
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#define __SET_PERSONALITY32_O32(ex, state) \
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do { \
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set_thread_flag(TIF_32BIT_REGS); \
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set_thread_flag(TIF_32BIT_ADDR); \
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clear_thread_flag(TIF_HYBRID_FPREGS); \
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set_thread_flag(TIF_32BIT_FPREGS); \
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\
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current->thread.abi = &mips_abi_32; \
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\
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mips_set_personality_fp(state); \
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} while (0)
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#else
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#define __SET_PERSONALITY32_O32(ex, state) \
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do { } while (0)
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#endif
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#ifdef CONFIG_MIPS32_COMPAT
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#define __SET_PERSONALITY32(ex, state) \
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do { \
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if ((((ex).e_flags & EF_MIPS_ABI2) != 0) && \
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((ex).e_flags & EF_MIPS_ABI) == 0) \
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__SET_PERSONALITY32_N32(); \
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else \
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__SET_PERSONALITY32_O32(ex, state); \
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} while (0)
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#else
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#define __SET_PERSONALITY32(ex, state) do { } while (0)
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#endif
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#define SET_PERSONALITY2(ex, state) \
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do { \
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unsigned int p; \
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\
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clear_thread_flag(TIF_32BIT_REGS); \
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clear_thread_flag(TIF_32BIT_FPREGS); \
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clear_thread_flag(TIF_HYBRID_FPREGS); \
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clear_thread_flag(TIF_32BIT_ADDR); \
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\
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if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \
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__SET_PERSONALITY32(ex, state); \
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else \
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current->thread.abi = &mips_abi; \
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\
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mips_set_personality_nan(state); \
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\
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p = personality(current->personality); \
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if (p != PER_LINUX32 && p != PER_LINUX) \
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set_personality(PER_LINUX); \
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} while (0)
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#endif /* CONFIG_64BIT */
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#define CORE_DUMP_USE_REGSET
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#define ELF_EXEC_PAGESIZE PAGE_SIZE
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/* This yields a mask that user programs can use to figure out what
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instruction set this cpu supports. This could be done in userspace,
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but it's not easy, and we've already done it here. */
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#define ELF_HWCAP (elf_hwcap)
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extern unsigned int elf_hwcap;
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#include <asm/hwcap.h>
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/*
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* This yields a string that ld.so will use to load implementation
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* specific libraries for optimization. This is more specific in
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* intent than poking at uname or /proc/cpuinfo.
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*/
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#define ELF_PLATFORM __elf_platform
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extern const char *__elf_platform;
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/*
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* See comments in asm-alpha/elf.h, this is the same thing
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* on the MIPS.
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*/
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#define ELF_PLAT_INIT(_r, load_addr) do { \
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_r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0; \
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_r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0; \
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_r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0; \
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_r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0; \
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_r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0; \
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_r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0; \
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_r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0; \
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_r->regs[30] = _r->regs[31] = 0; \
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} while (0)
|
|
|
|
/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
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|
use of this is to invoke "./ld.so someprog" to test out a new version of
|
|
the loader. We need to make sure that it is out of the way of the program
|
|
that it will "exec", and that there is sufficient room for the brk. */
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|
|
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#ifndef ELF_ET_DYN_BASE
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|
#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
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|
#endif
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|
|
|
/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
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|
#define ARCH_DLINFO \
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|
do { \
|
|
NEW_AUX_ENT(AT_SYSINFO_EHDR, \
|
|
(unsigned long)current->mm->context.vdso); \
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|
} while (0)
|
|
|
|
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
|
|
struct linux_binprm;
|
|
extern int arch_setup_additional_pages(struct linux_binprm *bprm,
|
|
int uses_interp);
|
|
|
|
struct arch_elf_state {
|
|
int nan_2008;
|
|
int fp_abi;
|
|
int interp_fp_abi;
|
|
int overall_fp_mode;
|
|
};
|
|
|
|
#define MIPS_ABI_FP_UNKNOWN (-1) /* Unknown FP ABI (kernel internal) */
|
|
|
|
#define INIT_ARCH_ELF_STATE { \
|
|
.nan_2008 = -1, \
|
|
.fp_abi = MIPS_ABI_FP_UNKNOWN, \
|
|
.interp_fp_abi = MIPS_ABI_FP_UNKNOWN, \
|
|
.overall_fp_mode = -1, \
|
|
}
|
|
|
|
/* Whether to accept legacy-NaN and 2008-NaN user binaries. */
|
|
extern bool mips_use_nan_legacy;
|
|
extern bool mips_use_nan_2008;
|
|
|
|
extern int arch_elf_pt_proc(void *ehdr, void *phdr, struct file *elf,
|
|
bool is_interp, struct arch_elf_state *state);
|
|
|
|
extern int arch_check_elf(void *ehdr, bool has_interpreter, void *interp_ehdr,
|
|
struct arch_elf_state *state);
|
|
|
|
extern void mips_set_personality_nan(struct arch_elf_state *state);
|
|
extern void mips_set_personality_fp(struct arch_elf_state *state);
|
|
|
|
#define elf_read_implies_exec(ex, stk) mips_elf_read_implies_exec(&(ex), stk)
|
|
extern int mips_elf_read_implies_exec(void *elf_ex, int exstack);
|
|
|
|
#endif /* _ASM_ELF_H */
|