1/* SPDX-License-Identifier: GPL-2.0 */ 2 3#ifndef __ASM_CSKY_ELF_H 4#define __ASM_CSKY_ELF_H 5 6#include <asm/ptrace.h> 7#include <abi/regdef.h> 8 9#define ELF_ARCH EM_CSKY 10#define EM_CSKY_OLD 39 11 12/* CSKY Relocations */ 13#define R_CSKY_NONE 0 14#define R_CSKY_32 1 15#define R_CSKY_PCIMM8BY4 2 16#define R_CSKY_PCIMM11BY2 3 17#define R_CSKY_PCIMM4BY2 4 18#define R_CSKY_PC32 5 19#define R_CSKY_PCRELJSR_IMM11BY2 6 20#define R_CSKY_GNU_VTINHERIT 7 21#define R_CSKY_GNU_VTENTRY 8 22#define R_CSKY_RELATIVE 9 23#define R_CSKY_COPY 10 24#define R_CSKY_GLOB_DAT 11 25#define R_CSKY_JUMP_SLOT 12 26#define R_CSKY_ADDR_HI16 24 27#define R_CSKY_ADDR_LO16 25 28#define R_CSKY_PCRELJSR_IMM26BY2 40 29 30typedef unsigned long elf_greg_t; 31 32typedef struct user_fp elf_fpregset_t; 33 34/* 35 * In gdb/bfd elf32-csky.c, csky_elf_grok_prstatus() use fixed size of 36 * elf_prstatus. It's 148 for abiv1 and 220 for abiv2, the size is enough 37 * for coredump and no need full sizeof(struct pt_regs). 38 */ 39#define ELF_NGREG ((sizeof(struct pt_regs) / sizeof(elf_greg_t)) - 2) 40 41typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 42 43/* 44 * This is used to ensure we don't load something for the wrong architecture. 45 */ 46#define elf_check_arch(x) (((x)->e_machine == ELF_ARCH) || \ 47 ((x)->e_machine == EM_CSKY_OLD)) 48 49/* 50 * These are used to set parameters in the core dumps. 51 */ 52#define ELF_EXEC_PAGESIZE 4096 53#define ELF_CLASS ELFCLASS32 54#define ELF_PLAT_INIT(_r, load_addr) { _r->a0 = 0; } 55 56#ifdef __cskyBE__ 57#define ELF_DATA ELFDATA2MSB 58#else 59#define ELF_DATA ELFDATA2LSB 60#endif 61 62/* 63 * This is the location that an ET_DYN program is loaded if exec'ed. Typical 64 * use of this is to invoke "./ld.so someprog" to test out a new version of 65 * the loader. We need to make sure that it is out of the way of the program 66 * that it will "exec", and that there is sufficient room for the brk. 67 */ 68#define ELF_ET_DYN_BASE 0x0UL 69#include <abi/elf.h> 70 71/* Similar, but for a thread other than current. */ 72struct task_struct; 73extern int dump_task_regs(struct task_struct *tsk, elf_gregset_t *elf_regs); 74#define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs) 75 76#define ELF_HWCAP (0) 77 78/* 79 * This yields a string that ld.so will use to load implementation specific 80 * libraries for optimization. This is more specific in intent than poking 81 * at uname or /proc/cpuinfo. 82 */ 83#define ELF_PLATFORM (NULL) 84#define SET_PERSONALITY(ex) set_personality(PER_LINUX) 85 86#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 87struct linux_binprm; 88extern int arch_setup_additional_pages(struct linux_binprm *bprm, 89 int uses_interp); 90#endif /* __ASM_CSKY_ELF_H */ 91