1/* elf.h: FR-V ELF definitions 2 * 3 * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. 4 * Written by David Howells (dhowells@redhat.com) 5 * - Derived from include/asm-m68knommu/elf.h 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 10 * 2 of the License, or (at your option) any later version. 11 */ 12#ifndef __ASM_ELF_H 13#define __ASM_ELF_H 14 15#include <asm/ptrace.h> 16#include <asm/user.h> 17 18struct elf32_hdr; 19 20/* 21 * ELF header e_flags defines. 22 */ 23#define EF_FRV_GPR_MASK 0x00000003 /* mask for # of gprs */ 24#define EF_FRV_GPR32 0x00000001 /* Only uses GR on 32-register */ 25#define EF_FRV_GPR64 0x00000002 /* Only uses GR on 64-register */ 26#define EF_FRV_FPR_MASK 0x0000000c /* mask for # of fprs */ 27#define EF_FRV_FPR32 0x00000004 /* Only uses FR on 32-register */ 28#define EF_FRV_FPR64 0x00000008 /* Only uses FR on 64-register */ 29#define EF_FRV_FPR_NONE 0x0000000C /* Uses software floating-point */ 30#define EF_FRV_DWORD_MASK 0x00000030 /* mask for dword support */ 31#define EF_FRV_DWORD_YES 0x00000010 /* Assumes stack aligned to 8-byte boundaries. */ 32#define EF_FRV_DWORD_NO 0x00000020 /* Assumes stack aligned to 4-byte boundaries. */ 33#define EF_FRV_DOUBLE 0x00000040 /* Uses double instructions. */ 34#define EF_FRV_MEDIA 0x00000080 /* Uses media instructions. */ 35#define EF_FRV_PIC 0x00000100 /* Uses position independent code. */ 36#define EF_FRV_NON_PIC_RELOCS 0x00000200 /* Does not use position Independent code. */ 37#define EF_FRV_MULADD 0x00000400 /* -mmuladd */ 38#define EF_FRV_BIGPIC 0x00000800 /* -fPIC */ 39#define EF_FRV_LIBPIC 0x00001000 /* -mlibrary-pic */ 40#define EF_FRV_G0 0x00002000 /* -G 0, no small data ptr */ 41#define EF_FRV_NOPACK 0x00004000 /* -mnopack */ 42#define EF_FRV_FDPIC 0x00008000 /* -mfdpic */ 43#define EF_FRV_CPU_MASK 0xff000000 /* specific cpu bits */ 44#define EF_FRV_CPU_GENERIC 0x00000000 /* Set CPU type is FR-V */ 45#define EF_FRV_CPU_FR500 0x01000000 /* Set CPU type is FR500 */ 46#define EF_FRV_CPU_FR300 0x02000000 /* Set CPU type is FR300 */ 47#define EF_FRV_CPU_SIMPLE 0x03000000 /* SIMPLE */ 48#define EF_FRV_CPU_TOMCAT 0x04000000 /* Tomcat, FR500 prototype */ 49#define EF_FRV_CPU_FR400 0x05000000 /* Set CPU type is FR400 */ 50#define EF_FRV_CPU_FR550 0x06000000 /* Set CPU type is FR550 */ 51#define EF_FRV_CPU_FR405 0x07000000 /* Set CPU type is FR405 */ 52#define EF_FRV_CPU_FR450 0x08000000 /* Set CPU type is FR450 */ 53 54/* 55 * FR-V ELF relocation types 56 */ 57 58 59/* 60 * ELF register definitions.. 61 */ 62typedef unsigned long elf_greg_t; 63 64#define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t)) 65typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 66 67typedef struct user_fpmedia_regs elf_fpregset_t; 68 69/* 70 * This is used to ensure we don't load something for the wrong architecture. 71 */ 72extern int elf_check_arch(const struct elf32_hdr *hdr); 73 74#define elf_check_fdpic(x) ((x)->e_flags & EF_FRV_FDPIC && !((x)->e_flags & EF_FRV_NON_PIC_RELOCS)) 75#define elf_check_const_displacement(x) ((x)->e_flags & EF_FRV_PIC) 76 77/* 78 * These are used to set parameters in the core dumps. 79 */ 80#define ELF_CLASS ELFCLASS32 81#define ELF_DATA ELFDATA2MSB 82#define ELF_ARCH EM_FRV 83 84#define ELF_PLAT_INIT(_r) \ 85do { \ 86 __kernel_frame0_ptr->gr16 = 0; \ 87 __kernel_frame0_ptr->gr17 = 0; \ 88 __kernel_frame0_ptr->gr18 = 0; \ 89 __kernel_frame0_ptr->gr19 = 0; \ 90 __kernel_frame0_ptr->gr20 = 0; \ 91 __kernel_frame0_ptr->gr21 = 0; \ 92 __kernel_frame0_ptr->gr22 = 0; \ 93 __kernel_frame0_ptr->gr23 = 0; \ 94 __kernel_frame0_ptr->gr24 = 0; \ 95 __kernel_frame0_ptr->gr25 = 0; \ 96 __kernel_frame0_ptr->gr26 = 0; \ 97 __kernel_frame0_ptr->gr27 = 0; \ 98 __kernel_frame0_ptr->gr29 = 0; \ 99} while(0) 100 101#define ELF_FDPIC_PLAT_INIT(_regs, _exec_map_addr, _interp_map_addr, _dynamic_addr) \ 102do { \ 103 __kernel_frame0_ptr->gr16 = _exec_map_addr; \ 104 __kernel_frame0_ptr->gr17 = _interp_map_addr; \ 105 __kernel_frame0_ptr->gr18 = _dynamic_addr; \ 106 __kernel_frame0_ptr->gr19 = 0; \ 107 __kernel_frame0_ptr->gr20 = 0; \ 108 __kernel_frame0_ptr->gr21 = 0; \ 109 __kernel_frame0_ptr->gr22 = 0; \ 110 __kernel_frame0_ptr->gr23 = 0; \ 111 __kernel_frame0_ptr->gr24 = 0; \ 112 __kernel_frame0_ptr->gr25 = 0; \ 113 __kernel_frame0_ptr->gr26 = 0; \ 114 __kernel_frame0_ptr->gr27 = 0; \ 115 __kernel_frame0_ptr->gr29 = 0; \ 116} while(0) 117 118#define CORE_DUMP_USE_REGSET 119#define ELF_FDPIC_CORE_EFLAGS EF_FRV_FDPIC 120#define ELF_EXEC_PAGESIZE 16384 121 122/* This is the location that an ET_DYN program is loaded if exec'ed. Typical 123 use of this is to invoke "./ld.so someprog" to test out a new version of 124 the loader. We need to make sure that it is out of the way of the program 125 that it will "exec", and that there is sufficient room for the brk. */ 126 127#define ELF_ET_DYN_BASE 0x08000000UL 128 129/* This yields a mask that user programs can use to figure out what 130 instruction set this cpu supports. */ 131 132#define ELF_HWCAP (0) 133 134/* This yields a string that ld.so will use to load implementation 135 specific libraries for optimization. This is more specific in 136 intent than poking at uname or /proc/cpuinfo. */ 137 138#define ELF_PLATFORM (NULL) 139 140#endif 141