| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 | /* TODO: Move definition into include/uapi/linux/elf-em.h */ |
| 20 | #define EM_RISCV 0xF3 |
| 21 | |
| 22 | /* |
| 23 | * These are used to set parameters in the core dumps. |
| 24 | */ |
| 25 | #define ELF_ARCH EM_RISCV |
| 26 | |
| 27 | #ifdef CONFIG_64BIT |
| 28 | #define ELF_CLASS ELFCLASS64 |
| 29 | #else |
| 30 | #define ELF_CLASS ELFCLASS32 |
| 31 | #endif |
| 32 | |
| 33 | #if defined(__LITTLE_ENDIAN) |
| 34 | #define ELF_DATA ELFDATA2LSB |
| 35 | #elif defined(__BIG_ENDIAN) |
| 36 | #define ELF_DATA ELFDATA2MSB |
| 37 | #else |
| 38 | #error "Unknown endianness" |
| 39 | #endif |
| 40 | |
| 41 | /* |
| 42 | * This is used to ensure we don't load something for the wrong architecture. |
| 43 | */ |
| 44 | #define elf_check_arch(x) ((x)->e_machine == EM_RISCV) |
| 45 | |
| 46 | #define CORE_DUMP_USE_REGSET |
| 47 | #define ELF_EXEC_PAGESIZE (PAGE_SIZE) |
| 48 | |
| 49 | /* |
| 50 | * This is the location that an ET_DYN program is loaded if exec'ed. Typical |
| 51 | * use of this is to invoke "./ld.so someprog" to test out a new version of |
| 52 | * the loader. We need to make sure that it is out of the way of the program |
| 53 | * that it will "exec", and that there is sufficient room for the brk. |
| 54 | */ |
| 55 | #define ELF_ET_DYN_BASE ((TASK_SIZE / 3) * 2) |
| 56 | |
| 57 | /* |
| 58 | * This yields a mask that user programs can use to figure out what |
| 59 | * instruction set this CPU supports. This could be done in user space, |
| 60 | * but it's not easy, and we've already done it here. |
| 61 | */ |
| 62 | #define ELF_HWCAP (elf_hwcap) |
| 63 | extern unsigned long elf_hwcap; |
| 64 | |
| 65 | /* |
| 66 | * This yields a string that ld.so will use to load implementation |
| 67 | * specific libraries for optimization. This is more specific in |
| 68 | * intent than poking at uname or /proc/cpuinfo. |
| 69 | */ |
| 70 | #define ELF_PLATFORM (NULL) |
| 71 | |
| 72 | #define ARCH_DLINFO \ |
| 73 | do { \ |
| 74 | NEW_AUX_ENT(AT_SYSINFO_EHDR, \ |
| 75 | (elf_addr_t)current->mm->context.vdso); \ |
| 76 | } while (0) |
| 77 | |
| 78 | |
| 79 | #define ARCH_HAS_SETUP_ADDITIONAL_PAGES |
| 80 | struct linux_binprm; |
| 81 | extern int arch_setup_additional_pages(struct linux_binprm *bprm, |
| 82 | int uses_interp); |
| 83 | |
| 84 | #endif /* _ASM_RISCV_ELF_H */ |