1 /* 2 * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com> 3 * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> 4 * Copyright (C) 2012 Regents of the University of California 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 */ 11 12 #ifndef _ASM_RISCV_ELF_H 13 #define _ASM_RISCV_ELF_H 14 15 #include <uapi/asm/elf.h> 16 #include <asm/auxvec.h> 17 #include <asm/byteorder.h> 18 19 /* 20 * These are used to set parameters in the core dumps. 21 */ 22 #define ELF_ARCH EM_RISCV 23 24 #ifdef CONFIG_64BIT 25 #define ELF_CLASS ELFCLASS64 26 #else 27 #define ELF_CLASS ELFCLASS32 28 #endif 29 30 #define ELF_DATA ELFDATA2LSB 31 32 /* 33 * This is used to ensure we don't load something for the wrong architecture. 34 */ 35 #define elf_check_arch(x) ((x)->e_machine == EM_RISCV) 36 37 #define CORE_DUMP_USE_REGSET 38 #define ELF_EXEC_PAGESIZE (PAGE_SIZE) 39 40 /* 41 * This is the location that an ET_DYN program is loaded if exec'ed. Typical 42 * use of this is to invoke "./ld.so someprog" to test out a new version of 43 * the loader. We need to make sure that it is out of the way of the program 44 * that it will "exec", and that there is sufficient room for the brk. 45 */ 46 #define ELF_ET_DYN_BASE ((TASK_SIZE / 3) * 2) 47 48 /* 49 * This yields a mask that user programs can use to figure out what 50 * instruction set this CPU supports. This could be done in user space, 51 * but it's not easy, and we've already done it here. 52 */ 53 #define ELF_HWCAP (elf_hwcap) 54 extern unsigned long elf_hwcap; 55 56 /* 57 * This yields a string that ld.so will use to load implementation 58 * specific libraries for optimization. This is more specific in 59 * intent than poking at uname or /proc/cpuinfo. 60 */ 61 #define ELF_PLATFORM (NULL) 62 63 #define ARCH_DLINFO \ 64 do { \ 65 NEW_AUX_ENT(AT_SYSINFO_EHDR, \ 66 (elf_addr_t)current->mm->context.vdso); \ 67 } while (0) 68 69 70 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 71 struct linux_binprm; 72 extern int arch_setup_additional_pages(struct linux_binprm *bprm, 73 int uses_interp); 74 75 #endif /* _ASM_RISCV_ELF_H */ 76