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299 lines
7.8 KiB
299 lines
7.8 KiB
/* 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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#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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loongarch_set_personality_fcsr(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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#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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loongarch_set_personality_fcsr(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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/* |
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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] = _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[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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extern void loongarch_set_personality_fcsr(struct arch_elf_state *state); |
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#endif /* _ASM_ELF_H */
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