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// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2005-2017 Andes Technology Corporation
#ifndef __ASMNDS32_ELF_H
#define __ASMNDS32_ELF_H
/*
* ELF register definitions..
*/
#include <asm/ptrace.h>
#include <asm/fpu.h>
#include <linux/elf-em.h>
typedef unsigned long elf_greg_t;
typedef unsigned long elf_freg_t[3];
extern unsigned int elf_hwcap;
#define R_NDS32_NONE 0
#define R_NDS32_16_RELA 19
#define R_NDS32_32_RELA 20
#define R_NDS32_9_PCREL_RELA 22
#define R_NDS32_15_PCREL_RELA 23
#define R_NDS32_17_PCREL_RELA 24
#define R_NDS32_25_PCREL_RELA 25
#define R_NDS32_HI20_RELA 26
#define R_NDS32_LO12S3_RELA 27
#define R_NDS32_LO12S2_RELA 28
#define R_NDS32_LO12S1_RELA 29
#define R_NDS32_LO12S0_RELA 30
#define R_NDS32_SDA15S3_RELA 31
#define R_NDS32_SDA15S2_RELA 32
#define R_NDS32_SDA15S1_RELA 33
#define R_NDS32_SDA15S0_RELA 34
#define R_NDS32_GOT20 37
#define R_NDS32_25_PLTREL 38
#define R_NDS32_COPY 39
#define R_NDS32_GLOB_DAT 40
#define R_NDS32_JMP_SLOT 41
#define R_NDS32_RELATIVE 42
#define R_NDS32_GOTOFF 43
#define R_NDS32_GOTPC20 44
#define R_NDS32_GOT_HI20 45
#define R_NDS32_GOT_LO12 46
#define R_NDS32_GOTPC_HI20 47
#define R_NDS32_GOTPC_LO12 48
#define R_NDS32_GOTOFF_HI20 49
#define R_NDS32_GOTOFF_LO12 50
#define R_NDS32_INSN16 51
#define R_NDS32_LABEL 52
#define R_NDS32_LONGCALL1 53
#define R_NDS32_LONGCALL2 54
#define R_NDS32_LONGCALL3 55
#define R_NDS32_LONGJUMP1 56
#define R_NDS32_LONGJUMP2 57
#define R_NDS32_LONGJUMP3 58
#define R_NDS32_LOADSTORE 59
#define R_NDS32_9_FIXED_RELA 60
#define R_NDS32_15_FIXED_RELA 61
#define R_NDS32_17_FIXED_RELA 62
#define R_NDS32_25_FIXED_RELA 63
#define R_NDS32_PLTREL_HI20 64
#define R_NDS32_PLTREL_LO12 65
#define R_NDS32_PLT_GOTREL_HI20 66
#define R_NDS32_PLT_GOTREL_LO12 67
#define R_NDS32_LO12S0_ORI_RELA 72
#define R_NDS32_DWARF2_OP1_RELA 77
#define R_NDS32_DWARF2_OP2_RELA 78
#define R_NDS32_DWARF2_LEB_RELA 79
#define R_NDS32_WORD_9_PCREL_RELA 94
#define R_NDS32_LONGCALL4 107
#define R_NDS32_RELA_NOP_MIX 192
#define R_NDS32_RELA_NOP_MAX 255
#define ELF_NGREG (sizeof (struct user_pt_regs) / sizeof(elf_greg_t))
#define ELF_CORE_COPY_REGS(dest, regs) \
*(struct user_pt_regs *)&(dest) = (regs)->user_regs;
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
/* Core file format: The core file is written in such a way that gdb
can understand it and provide useful information to the user (under
linux we use the 'trad-core' bfd). There are quite a number of
obstacles to being able to view the contents of the floating point
registers, and until these are solved you will not be able to view the
contents of them. Actually, you can read in the core file and look at
the contents of the user struct to find out what the floating point
registers contain.
The actual file contents are as follows:
UPAGE: 1 page consisting of a user struct that tells gdb what is present
in the file. Directly after this is a copy of the task_struct, which
is currently not used by gdb, but it may come in useful at some point.
All of the registers are stored as part of the upage. The upage should
always be only one page.
DATA: The data area is stored. We use current->end_text to
current->brk to pick up all of the user variables, plus any memory
that may have been malloced. No attempt is made to determine if a page
is demand-zero or if a page is totally unused, we just cover the entire
range. All of the addresses are rounded in such a way that an integral
number of pages is written.
STACK: We need the stack information in order to get a meaningful
backtrace. We need to write the data from (esp) to
current->start_stack, so we round each of these off in order to be able
to write an integer number of pages.
The minimum core file size is 3 pages, or 12288 bytes.
*/
struct user_fp {
unsigned long long fd_regs[32];
unsigned long fpcsr;
};
typedef struct user_fp elf_fpregset_t;
struct elf32_hdr;
#define elf_check_arch(x) ((x)->e_machine == EM_NDS32)
/*
* These are used to set parameters in the core dumps.
*/
#define ELF_CLASS ELFCLASS32
#ifdef __NDS32_EB__
#define ELF_DATA ELFDATA2MSB
#else
#define ELF_DATA ELFDATA2LSB
#endif
#define ELF_ARCH EM_NDS32
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE PAGE_SIZE
/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
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. */
#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
/* When the program starts, a1 contains a pointer to a function to be
registered with atexit, as per the SVR4 ABI. A value of 0 means we
have no such handler. */
#define ELF_PLAT_INIT(_r, load_addr) (_r)->uregs[0] = 0
/* This yields a mask that user programs can use to figure out what
instruction set this cpu supports. */
#define ELF_HWCAP (elf_hwcap)
#ifdef __KERNEL__
#define ELF_PLATFORM (NULL)
/* Old NetWinder binaries were compiled in such a way that the iBCS
heuristic always trips on them. Until these binaries become uncommon
enough not to care, don't trust the `ibcs' flag here. In any case
there is no other ELF system currently supported by iBCS.
@@ Could print a warning message to encourage users to upgrade. */
#define SET_PERSONALITY(ex) set_personality(PER_LINUX)
#endif
#if IS_ENABLED(CONFIG_FPU)
#define FPU_AUX_ENT NEW_AUX_ENT(AT_FPUCW, FPCSR_INIT)
#else
#define FPU_AUX_ENT NEW_AUX_ENT(AT_IGNORE, 0)
#endif
#define ARCH_DLINFO \
do { \
/* Optional FPU initialization */ \
FPU_AUX_ENT; \
\
NEW_AUX_ENT(AT_SYSINFO_EHDR, \
(elf_addr_t)current->mm->context.vdso); \
} while (0)
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
struct linux_binprm;
int arch_setup_additional_pages(struct linux_binprm *, int);
#endif
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