1 /* SPDX-License-Identifier: GPL-2.0 */ 2 // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. 3 4 #ifndef __ASM_CSKY_ELF_H 5 #define __ASM_CSKY_ELF_H 6 7 #include <asm/ptrace.h> 8 #include <abi/regdef.h> 9 10 #define ELF_ARCH 252 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 30 typedef unsigned long elf_greg_t; 31 32 typedef struct user_fp elf_fpregset_t; 33 34 #define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t)) 35 36 typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 37 38 /* 39 * This is used to ensure we don't load something for the wrong architecture. 40 */ 41 #define elf_check_arch(x) ((x)->e_machine == ELF_ARCH) 42 43 /* 44 * These are used to set parameters in the core dumps. 45 */ 46 #define USE_ELF_CORE_DUMP 47 #define ELF_EXEC_PAGESIZE 4096 48 #define ELF_CLASS ELFCLASS32 49 #define ELF_PLAT_INIT(_r, load_addr) { _r->a0 = 0; } 50 51 #ifdef __cskyBE__ 52 #define ELF_DATA ELFDATA2MSB 53 #else 54 #define ELF_DATA ELFDATA2LSB 55 #endif 56 57 /* 58 * This is the location that an ET_DYN program is loaded if exec'ed. Typical 59 * use of this is to invoke "./ld.so someprog" to test out a new version of 60 * the loader. We need to make sure that it is out of the way of the program 61 * that it will "exec", and that there is sufficient room for the brk. 62 */ 63 #define ELF_ET_DYN_BASE 0x0UL 64 #include <abi/elf.h> 65 66 /* Similar, but for a thread other than current. */ 67 struct task_struct; 68 extern int dump_task_regs(struct task_struct *tsk, elf_gregset_t *elf_regs); 69 #define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs) 70 71 #define ELF_HWCAP (0) 72 73 /* 74 * This yields a string that ld.so will use to load implementation specific 75 * libraries for optimization. This is more specific in intent than poking 76 * at uname or /proc/cpuinfo. 77 */ 78 #define ELF_PLATFORM (NULL) 79 #define SET_PERSONALITY(ex) set_personality(PER_LINUX) 80 81 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 82 struct linux_binprm; 83 extern int arch_setup_additional_pages(struct linux_binprm *bprm, 84 int uses_interp); 85 #endif /* __ASM_CSKY_ELF_H */ 86