1/* 2 * Copyright 2004-2009 Analog Devices Inc. 3 * 4 * Licensed under the GPL-2 or later. 5 */ 6 7#ifndef __ASMBFIN_ELF_H 8#define __ASMBFIN_ELF_H 9 10/* 11 * ELF register definitions.. 12 */ 13 14#include <asm/ptrace.h> 15#include <asm/user.h> 16 17/* Processor specific flags for the ELF header e_flags field. */ 18#define EF_BFIN_PIC 0x00000001 /* -fpic */ 19#define EF_BFIN_FDPIC 0x00000002 /* -mfdpic */ 20#define EF_BFIN_CODE_IN_L1 0x00000010 /* --code-in-l1 */ 21#define EF_BFIN_DATA_IN_L1 0x00000020 /* --data-in-l1 */ 22#define EF_BFIN_CODE_IN_L2 0x00000040 /* --code-in-l2 */ 23#define EF_BFIN_DATA_IN_L2 0x00000080 /* --data-in-l2 */ 24 25#if 1 /* core dumps not supported, but linux/elfcore.h needs these */ 26typedef unsigned long elf_greg_t; 27 28#define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t)) 29typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 30 31typedef struct { } elf_fpregset_t; 32#endif 33 34/* 35 * This is used to ensure we don't load something for the wrong architecture. 36 */ 37#define elf_check_arch(x) ((x)->e_machine == EM_BLACKFIN) 38 39#define elf_check_fdpic(x) ((x)->e_flags & EF_BFIN_FDPIC /* && !((x)->e_flags & EF_FRV_NON_PIC_RELOCS) */) 40#define elf_check_const_displacement(x) ((x)->e_flags & EF_BFIN_PIC) 41 42/* EM_BLACKFIN defined in linux/elf.h */ 43 44/* 45 * These are used to set parameters in the core dumps. 46 */ 47#define ELF_CLASS ELFCLASS32 48#define ELF_DATA ELFDATA2LSB 49#define ELF_ARCH EM_BLACKFIN 50 51#define ELF_PLAT_INIT(_r) _r->p1 = 0 52 53#define ELF_FDPIC_PLAT_INIT(_regs, _exec_map_addr, _interp_map_addr, _dynamic_addr) \ 54do { \ 55 _regs->r7 = 0; \ 56 _regs->p0 = _exec_map_addr; \ 57 _regs->p1 = _interp_map_addr; \ 58 _regs->p2 = _dynamic_addr; \ 59} while(0) 60 61#if 0 62#define CORE_DUMP_USE_REGSET 63#endif 64#define ELF_FDPIC_CORE_EFLAGS EF_BFIN_FDPIC 65#define ELF_EXEC_PAGESIZE 4096 66 67#define R_BFIN_UNUSED0 0 /* relocation type 0 is not defined */ 68#define R_BFIN_PCREL5M2 1 /* LSETUP part a */ 69#define R_BFIN_UNUSED1 2 /* relocation type 2 is not defined */ 70#define R_BFIN_PCREL10 3 /* type 3, if cc jump <target> */ 71#define R_BFIN_PCREL12_JUMP 4 /* type 4, jump <target> */ 72#define R_BFIN_RIMM16 5 /* type 0x5, rN = <target> */ 73#define R_BFIN_LUIMM16 6 /* # 0x6, preg.l=<target> Load imm 16 to lower half */ 74#define R_BFIN_HUIMM16 7 /* # 0x7, preg.h=<target> Load imm 16 to upper half */ 75#define R_BFIN_PCREL12_JUMP_S 8 /* # 0x8 jump.s <target> */ 76#define R_BFIN_PCREL24_JUMP_X 9 /* # 0x9 jump.x <target> */ 77#define R_BFIN_PCREL24 10 /* # 0xa call <target> , not expandable */ 78#define R_BFIN_UNUSEDB 11 /* # 0xb not generated */ 79#define R_BFIN_UNUSEDC 12 /* # 0xc not used */ 80#define R_BFIN_PCREL24_JUMP_L 13 /* 0xd jump.l <target> */ 81#define R_BFIN_PCREL24_CALL_X 14 /* 0xE, call.x <target> if <target> is above 24 bit limit call through P1 */ 82#define R_BFIN_VAR_EQ_SYMB 15 /* 0xf, linker should treat it same as 0x12 */ 83#define R_BFIN_BYTE_DATA 16 /* 0x10, .byte var = symbol */ 84#define R_BFIN_BYTE2_DATA 17 /* 0x11, .byte2 var = symbol */ 85#define R_BFIN_BYTE4_DATA 18 /* 0x12, .byte4 var = symbol and .var var=symbol */ 86#define R_BFIN_PCREL11 19 /* 0x13, lsetup part b */ 87#define R_BFIN_UNUSED14 20 /* 0x14, undefined */ 88#define R_BFIN_UNUSED15 21 /* not generated by VDSP 3.5 */ 89 90/* arithmetic relocations */ 91#define R_BFIN_PUSH 0xE0 92#define R_BFIN_CONST 0xE1 93#define R_BFIN_ADD 0xE2 94#define R_BFIN_SUB 0xE3 95#define R_BFIN_MULT 0xE4 96#define R_BFIN_DIV 0xE5 97#define R_BFIN_MOD 0xE6 98#define R_BFIN_LSHIFT 0xE7 99#define R_BFIN_RSHIFT 0xE8 100#define R_BFIN_AND 0xE9 101#define R_BFIN_OR 0xEA 102#define R_BFIN_XOR 0xEB 103#define R_BFIN_LAND 0xEC 104#define R_BFIN_LOR 0xED 105#define R_BFIN_LEN 0xEE 106#define R_BFIN_NEG 0xEF 107#define R_BFIN_COMP 0xF0 108#define R_BFIN_PAGE 0xF1 109#define R_BFIN_HWPAGE 0xF2 110#define R_BFIN_ADDR 0xF3 111 112/* This is the location that an ET_DYN program is loaded if exec'ed. Typical 113 use of this is to invoke "./ld.so someprog" to test out a new version of 114 the loader. We need to make sure that it is out of the way of the program 115 that it will "exec", and that there is sufficient room for the brk. */ 116 117#define ELF_ET_DYN_BASE 0xD0000000UL 118 119#define ELF_CORE_COPY_REGS(pr_reg, regs) \ 120 memcpy((char *) &pr_reg, (char *)regs, \ 121 sizeof(struct pt_regs)); 122#define ELF_CORE_COPY_FPREGS(...) 0 /* Blackfin has no FPU */ 123 124/* This yields a mask that user programs can use to figure out what 125 instruction set this cpu supports. */ 126 127#define ELF_HWCAP (0) 128 129/* This yields a string that ld.so will use to load implementation 130 specific libraries for optimization. This is more specific in 131 intent than poking at uname or /proc/cpuinfo. */ 132 133#define ELF_PLATFORM (NULL) 134 135#endif 136