341 lines
9.1 KiB
C
341 lines
9.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
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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 <uapi/linux/elf.h>
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#include <asm/current.h>
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#include <asm/vdso.h>
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/* The ABI of a file. */
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#define EF_LOONGARCH_ABI_LP64_SOFT_FLOAT 0x1
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#define EF_LOONGARCH_ABI_LP64_SINGLE_FLOAT 0x2
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#define EF_LOONGARCH_ABI_LP64_DOUBLE_FLOAT 0x3
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#define EF_LOONGARCH_ABI_ILP32_SOFT_FLOAT 0x5
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#define EF_LOONGARCH_ABI_ILP32_SINGLE_FLOAT 0x6
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#define EF_LOONGARCH_ABI_ILP32_DOUBLE_FLOAT 0x7
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/* LoongArch relocation types used by the dynamic linker */
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#define R_LARCH_NONE 0
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#define R_LARCH_32 1
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#define R_LARCH_64 2
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#define R_LARCH_RELATIVE 3
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#define R_LARCH_COPY 4
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#define R_LARCH_JUMP_SLOT 5
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#define R_LARCH_TLS_DTPMOD32 6
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#define R_LARCH_TLS_DTPMOD64 7
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#define R_LARCH_TLS_DTPREL32 8
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#define R_LARCH_TLS_DTPREL64 9
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#define R_LARCH_TLS_TPREL32 10
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#define R_LARCH_TLS_TPREL64 11
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#define R_LARCH_IRELATIVE 12
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#define R_LARCH_MARK_LA 20
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#define R_LARCH_MARK_PCREL 21
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#define R_LARCH_SOP_PUSH_PCREL 22
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#define R_LARCH_SOP_PUSH_ABSOLUTE 23
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#define R_LARCH_SOP_PUSH_DUP 24
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#define R_LARCH_SOP_PUSH_GPREL 25
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#define R_LARCH_SOP_PUSH_TLS_TPREL 26
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#define R_LARCH_SOP_PUSH_TLS_GOT 27
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#define R_LARCH_SOP_PUSH_TLS_GD 28
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#define R_LARCH_SOP_PUSH_PLT_PCREL 29
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#define R_LARCH_SOP_ASSERT 30
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#define R_LARCH_SOP_NOT 31
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#define R_LARCH_SOP_SUB 32
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#define R_LARCH_SOP_SL 33
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#define R_LARCH_SOP_SR 34
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#define R_LARCH_SOP_ADD 35
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#define R_LARCH_SOP_AND 36
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#define R_LARCH_SOP_IF_ELSE 37
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#define R_LARCH_SOP_POP_32_S_10_5 38
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#define R_LARCH_SOP_POP_32_U_10_12 39
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#define R_LARCH_SOP_POP_32_S_10_12 40
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#define R_LARCH_SOP_POP_32_S_10_16 41
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#define R_LARCH_SOP_POP_32_S_10_16_S2 42
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#define R_LARCH_SOP_POP_32_S_5_20 43
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#define R_LARCH_SOP_POP_32_S_0_5_10_16_S2 44
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#define R_LARCH_SOP_POP_32_S_0_10_10_16_S2 45
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#define R_LARCH_SOP_POP_32_U 46
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#define R_LARCH_ADD8 47
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#define R_LARCH_ADD16 48
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#define R_LARCH_ADD24 49
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#define R_LARCH_ADD32 50
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#define R_LARCH_ADD64 51
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#define R_LARCH_SUB8 52
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#define R_LARCH_SUB16 53
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#define R_LARCH_SUB24 54
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#define R_LARCH_SUB32 55
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#define R_LARCH_SUB64 56
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#define R_LARCH_GNU_VTINHERIT 57
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#define R_LARCH_GNU_VTENTRY 58
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#define R_LARCH_B16 64
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#define R_LARCH_B21 65
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#define R_LARCH_B26 66
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#define R_LARCH_ABS_HI20 67
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#define R_LARCH_ABS_LO12 68
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#define R_LARCH_ABS64_LO20 69
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#define R_LARCH_ABS64_HI12 70
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#define R_LARCH_PCALA_HI20 71
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#define R_LARCH_PCALA_LO12 72
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#define R_LARCH_PCALA64_LO20 73
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#define R_LARCH_PCALA64_HI12 74
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#define R_LARCH_GOT_PC_HI20 75
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#define R_LARCH_GOT_PC_LO12 76
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#define R_LARCH_GOT64_PC_LO20 77
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#define R_LARCH_GOT64_PC_HI12 78
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#define R_LARCH_GOT_HI20 79
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#define R_LARCH_GOT_LO12 80
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#define R_LARCH_GOT64_LO20 81
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#define R_LARCH_GOT64_HI12 82
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#define R_LARCH_TLS_LE_HI20 83
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#define R_LARCH_TLS_LE_LO12 84
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#define R_LARCH_TLS_LE64_LO20 85
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#define R_LARCH_TLS_LE64_HI12 86
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#define R_LARCH_TLS_IE_PC_HI20 87
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#define R_LARCH_TLS_IE_PC_LO12 88
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#define R_LARCH_TLS_IE64_PC_LO20 89
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#define R_LARCH_TLS_IE64_PC_HI12 90
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#define R_LARCH_TLS_IE_HI20 91
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#define R_LARCH_TLS_IE_LO12 92
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#define R_LARCH_TLS_IE64_LO20 93
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#define R_LARCH_TLS_IE64_HI12 94
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#define R_LARCH_TLS_LD_PC_HI20 95
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#define R_LARCH_TLS_LD_HI20 96
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#define R_LARCH_TLS_GD_PC_HI20 97
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#define R_LARCH_TLS_GD_HI20 98
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#define R_LARCH_32_PCREL 99
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#define R_LARCH_RELAX 100
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#define R_LARCH_DELETE 101
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#define R_LARCH_ALIGN 102
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#define R_LARCH_PCREL20_S2 103
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#define R_LARCH_CFA 104
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#define R_LARCH_ADD6 105
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#define R_LARCH_SUB6 106
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#define R_LARCH_ADD_ULEB128 107
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#define R_LARCH_SUB_ULEB128 108
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#define R_LARCH_64_PCREL 109
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#ifndef ELF_ARCH
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/* ELF register definitions */
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/*
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* General purpose have the following registers:
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* Register Number
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* GPRs 32
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* ORIG_A0 1
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* ERA 1
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* BADVADDR 1
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* CRMD 1
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* PRMD 1
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* EUEN 1
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* ECFG 1
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* ESTAT 1
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* Reserved 5
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*/
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#define ELF_NGREG 45
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/*
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* Floating point have the following registers:
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* Register Number
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* FPR 32
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* FCC 1
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* FCSR 1
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*/
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#define ELF_NFPREG 34
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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 loongarch_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 elf32_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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loongarch_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 elf64_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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loongarch_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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#define ELF_DATA ELFDATA2LSB
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#define ELF_ARCH EM_LOONGARCH
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#endif /* !defined(ELF_ARCH) */
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#define loongarch_elf_check_machine(x) ((x)->e_machine == EM_LOONGARCH)
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#define vmcore_elf32_check_arch loongarch_elf_check_machine
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#define vmcore_elf64_check_arch loongarch_elf_check_machine
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/*
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* Return non-zero if HDR identifies an 32bit ELF binary.
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*/
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#define elf32_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 (!loongarch_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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\
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__res; \
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})
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/*
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* Return non-zero if HDR identifies an 64bit ELF binary.
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*/
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#define elf64_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 (!loongarch_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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#ifdef CONFIG_32BIT
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#define SET_PERSONALITY2(ex, state) \
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do { \
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current->thread.vdso = &vdso_info; \
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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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#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_ADDR); \
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\
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current->thread.vdso = &vdso_info; \
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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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/*
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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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*/
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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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#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] /* syscall n */ = _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[29] = _r->regs[30] = _r->regs[31] = 0; \
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} while (0)
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/*
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* 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
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* the loader. We need to make sure that it is out of the way of the program
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* that it will "exec", and that there is sufficient room for the brk.
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*/
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#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
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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 { \
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NEW_AUX_ENT(AT_SYSINFO_EHDR, \
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(unsigned long)current->mm->context.vdso); \
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} while (0)
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#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
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struct linux_binprm;
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extern int arch_setup_additional_pages(struct linux_binprm *bprm,
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int uses_interp);
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struct arch_elf_state {
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int fp_abi;
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int interp_fp_abi;
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};
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#define LOONGARCH_ABI_FP_ANY (0)
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#define INIT_ARCH_ELF_STATE { \
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.fp_abi = LOONGARCH_ABI_FP_ANY, \
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.interp_fp_abi = LOONGARCH_ABI_FP_ANY, \
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}
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extern int arch_elf_pt_proc(void *ehdr, void *phdr, struct file *elf,
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bool is_interp, struct arch_elf_state *state);
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extern int arch_check_elf(void *ehdr, bool has_interpreter, void *interp_ehdr,
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struct arch_elf_state *state);
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#endif /* _ASM_ELF_H */
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