/* SPDX-License-Identifier: GPL-2.0 */
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// Copyright (C) 2005-2017 Andes Technology Corporation
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#ifndef __ASMNDS32_ELF_H
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#define __ASMNDS32_ELF_H
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/*
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* ELF register definitions..
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*/
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#include <asm/ptrace.h>
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#include <asm/fpu.h>
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#include <linux/elf-em.h>
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typedef unsigned long elf_greg_t;
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typedef unsigned long elf_freg_t[3];
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extern unsigned int elf_hwcap;
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#define R_NDS32_NONE 0
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#define R_NDS32_16_RELA 19
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#define R_NDS32_32_RELA 20
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#define R_NDS32_9_PCREL_RELA 22
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#define R_NDS32_15_PCREL_RELA 23
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#define R_NDS32_17_PCREL_RELA 24
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#define R_NDS32_25_PCREL_RELA 25
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#define R_NDS32_HI20_RELA 26
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#define R_NDS32_LO12S3_RELA 27
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#define R_NDS32_LO12S2_RELA 28
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#define R_NDS32_LO12S1_RELA 29
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#define R_NDS32_LO12S0_RELA 30
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#define R_NDS32_SDA15S3_RELA 31
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#define R_NDS32_SDA15S2_RELA 32
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#define R_NDS32_SDA15S1_RELA 33
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#define R_NDS32_SDA15S0_RELA 34
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#define R_NDS32_GOT20 37
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#define R_NDS32_25_PLTREL 38
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#define R_NDS32_COPY 39
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#define R_NDS32_GLOB_DAT 40
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#define R_NDS32_JMP_SLOT 41
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#define R_NDS32_RELATIVE 42
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#define R_NDS32_GOTOFF 43
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#define R_NDS32_GOTPC20 44
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#define R_NDS32_GOT_HI20 45
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#define R_NDS32_GOT_LO12 46
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#define R_NDS32_GOTPC_HI20 47
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#define R_NDS32_GOTPC_LO12 48
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#define R_NDS32_GOTOFF_HI20 49
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#define R_NDS32_GOTOFF_LO12 50
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#define R_NDS32_INSN16 51
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#define R_NDS32_LABEL 52
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#define R_NDS32_LONGCALL1 53
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#define R_NDS32_LONGCALL2 54
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#define R_NDS32_LONGCALL3 55
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#define R_NDS32_LONGJUMP1 56
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#define R_NDS32_LONGJUMP2 57
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#define R_NDS32_LONGJUMP3 58
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#define R_NDS32_LOADSTORE 59
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#define R_NDS32_9_FIXED_RELA 60
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#define R_NDS32_15_FIXED_RELA 61
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#define R_NDS32_17_FIXED_RELA 62
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#define R_NDS32_25_FIXED_RELA 63
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#define R_NDS32_PLTREL_HI20 64
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#define R_NDS32_PLTREL_LO12 65
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#define R_NDS32_PLT_GOTREL_HI20 66
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#define R_NDS32_PLT_GOTREL_LO12 67
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#define R_NDS32_LO12S0_ORI_RELA 72
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#define R_NDS32_DWARF2_OP1_RELA 77
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#define R_NDS32_DWARF2_OP2_RELA 78
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#define R_NDS32_DWARF2_LEB_RELA 79
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#define R_NDS32_WORD_9_PCREL_RELA 94
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#define R_NDS32_LONGCALL4 107
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#define R_NDS32_RELA_NOP_MIX 192
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#define R_NDS32_RELA_NOP_MAX 255
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#define ELF_NGREG (sizeof (struct user_pt_regs) / sizeof(elf_greg_t))
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#define ELF_CORE_COPY_REGS(dest, regs) \
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*(struct user_pt_regs *)&(dest) = (regs)->user_regs;
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typedef elf_greg_t elf_gregset_t[ELF_NGREG];
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/* Core file format: The core file is written in such a way that gdb
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can understand it and provide useful information to the user (under
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linux we use the 'trad-core' bfd). There are quite a number of
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obstacles to being able to view the contents of the floating point
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registers, and until these are solved you will not be able to view the
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contents of them. Actually, you can read in the core file and look at
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the contents of the user struct to find out what the floating point
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registers contain.
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The actual file contents are as follows:
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UPAGE: 1 page consisting of a user struct that tells gdb what is present
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in the file. Directly after this is a copy of the task_struct, which
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is currently not used by gdb, but it may come in useful at some point.
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All of the registers are stored as part of the upage. The upage should
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always be only one page.
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DATA: The data area is stored. We use current->end_text to
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current->brk to pick up all of the user variables, plus any memory
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that may have been malloced. No attempt is made to determine if a page
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is demand-zero or if a page is totally unused, we just cover the entire
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range. All of the addresses are rounded in such a way that an integral
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number of pages is written.
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STACK: We need the stack information in order to get a meaningful
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backtrace. We need to write the data from (esp) to
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current->start_stack, so we round each of these off in order to be able
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to write an integer number of pages.
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The minimum core file size is 3 pages, or 12288 bytes.
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*/
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struct user_fp {
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unsigned long long fd_regs[32];
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unsigned long fpcsr;
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};
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typedef struct user_fp elf_fpregset_t;
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struct elf32_hdr;
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#define elf_check_arch(x) ((x)->e_machine == EM_NDS32)
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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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#ifdef __NDS32_EB__
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#define ELF_DATA ELFDATA2MSB
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#else
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#define ELF_DATA ELFDATA2LSB
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#endif
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#define ELF_ARCH EM_NDS32
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#define USE_ELF_CORE_DUMP
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#define ELF_EXEC_PAGESIZE PAGE_SIZE
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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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#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
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/* When the program starts, a1 contains a pointer to a function to be
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registered with atexit, as per the SVR4 ABI. A value of 0 means we
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have no such handler. */
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#define ELF_PLAT_INIT(_r, load_addr) (_r)->uregs[0] = 0
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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. */
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#define ELF_HWCAP (elf_hwcap)
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#ifdef __KERNEL__
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#define ELF_PLATFORM (NULL)
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/* Old NetWinder binaries were compiled in such a way that the iBCS
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heuristic always trips on them. Until these binaries become uncommon
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enough not to care, don't trust the `ibcs' flag here. In any case
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there is no other ELF system currently supported by iBCS.
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@@ Could print a warning message to encourage users to upgrade. */
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#define SET_PERSONALITY(ex) set_personality(PER_LINUX)
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#endif
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#if IS_ENABLED(CONFIG_FPU)
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#define FPU_AUX_ENT NEW_AUX_ENT(AT_FPUCW, FPCSR_INIT)
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#else
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#define FPU_AUX_ENT NEW_AUX_ENT(AT_IGNORE, 0)
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#endif
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#define ARCH_DLINFO \
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do { \
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/* Optional FPU initialization */ \
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FPU_AUX_ENT; \
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\
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NEW_AUX_ENT(AT_SYSINFO_EHDR, \
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(elf_addr_t)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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int arch_setup_additional_pages(struct linux_binprm *, int);
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#endif
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