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 EM_CSKY 11 #define EM_CSKY_OLD 39 12 13 /* CSKY Relocations */ 14 #define R_CSKY_NONE 0 15 #define R_CSKY_32 1 16 #define R_CSKY_PCIMM8BY4 2 17 #define R_CSKY_PCIMM11BY2 3 18 #define R_CSKY_PCIMM4BY2 4 19 #define R_CSKY_PC32 5 20 #define R_CSKY_PCRELJSR_IMM11BY2 6 21 #define R_CSKY_GNU_VTINHERIT 7 22 #define R_CSKY_GNU_VTENTRY 8 23 #define R_CSKY_RELATIVE 9 24 #define R_CSKY_COPY 10 25 #define R_CSKY_GLOB_DAT 11 26 #define R_CSKY_JUMP_SLOT 12 27 #define R_CSKY_ADDR_HI16 24 28 #define R_CSKY_ADDR_LO16 25 29 #define R_CSKY_PCRELJSR_IMM26BY2 40 30 31 typedef unsigned long elf_greg_t; 32 33 typedef struct user_fp elf_fpregset_t; 34 35 /* 36 * In gdb/bfd elf32-csky.c, csky_elf_grok_prstatus() use fixed size of 37 * elf_prstatus. It's 148 for abiv1 and 220 for abiv2, the size is enough 38 * for coredump and no need full sizeof(struct pt_regs). 39 */ 40 #define ELF_NGREG ((sizeof(struct pt_regs) / sizeof(elf_greg_t)) - 2) 41 42 typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 43 44 /* 45 * This is used to ensure we don't load something for the wrong architecture. 46 */ 47 #define elf_check_arch(x) (((x)->e_machine == ELF_ARCH) || \ 48 ((x)->e_machine == EM_CSKY_OLD)) 49 50 /* 51 * These are used to set parameters in the core dumps. 52 */ 53 #define ELF_EXEC_PAGESIZE 4096 54 #define ELF_CLASS ELFCLASS32 55 #define ELF_PLAT_INIT(_r, load_addr) { _r->a0 = 0; } 56 57 #ifdef __cskyBE__ 58 #define ELF_DATA ELFDATA2MSB 59 #else 60 #define ELF_DATA ELFDATA2LSB 61 #endif 62 63 /* 64 * This is the location that an ET_DYN program is loaded if exec'ed. Typical 65 * use of this is to invoke "./ld.so someprog" to test out a new version of 66 * the loader. We need to make sure that it is out of the way of the program 67 * that it will "exec", and that there is sufficient room for the brk. 68 */ 69 #define ELF_ET_DYN_BASE 0x0UL 70 #include <abi/elf.h> 71 72 /* Similar, but for a thread other than current. */ 73 struct task_struct; 74 extern int dump_task_regs(struct task_struct *tsk, elf_gregset_t *elf_regs); 75 #define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs) 76 77 #define ELF_HWCAP (0) 78 79 /* 80 * This yields a string that ld.so will use to load implementation specific 81 * libraries for optimization. This is more specific in intent than poking 82 * at uname or /proc/cpuinfo. 83 */ 84 #define ELF_PLATFORM (NULL) 85 #define SET_PERSONALITY(ex) set_personality(PER_LINUX) 86 87 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 88 struct linux_binprm; 89 extern int arch_setup_additional_pages(struct linux_binprm *bprm, 90 int uses_interp); 91 #endif /* __ASM_CSKY_ELF_H */ 92