Robin Getz | 96f1050 | 2009-09-24 14:11:24 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2004-2009 Analog Devices Inc. |
| 3 | * |
| 4 | * Licensed under the GPL-2 or later. |
| 5 | */ |
Bryan Wu | 1394f03 | 2007-05-06 14:50:22 -0700 | [diff] [blame] | 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 */ |
Sonic Zhang | 262c382 | 2008-07-19 15:42:41 +0800 | [diff] [blame] | 22 | #define EF_BFIN_CODE_IN_L2 0x00000040 /* --code-in-l2 */ |
| 23 | #define EF_BFIN_DATA_IN_L2 0x00000080 /* --data-in-l2 */ |
Bryan Wu | 1394f03 | 2007-05-06 14:50:22 -0700 | [diff] [blame] | 24 | |
Mike Frysinger | e50e2f2 | 2010-02-14 22:58:02 +0000 | [diff] [blame] | 25 | #if 1 /* core dumps not supported, but linux/elfcore.h needs these */ |
Bryan Wu | 1394f03 | 2007-05-06 14:50:22 -0700 | [diff] [blame] | 26 | typedef unsigned long elf_greg_t; |
| 27 | |
Mike Frysinger | e50e2f2 | 2010-02-14 22:58:02 +0000 | [diff] [blame] | 28 | #define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t)) |
Bryan Wu | 1394f03 | 2007-05-06 14:50:22 -0700 | [diff] [blame] | 29 | typedef elf_greg_t elf_gregset_t[ELF_NGREG]; |
| 30 | |
Mike Frysinger | 3b67d91 | 2009-09-14 21:22:06 +0000 | [diff] [blame] | 31 | typedef struct { } elf_fpregset_t; |
Mike Frysinger | e50e2f2 | 2010-02-14 22:58:02 +0000 | [diff] [blame] | 32 | #endif |
| 33 | |
Bryan Wu | 1394f03 | 2007-05-06 14:50:22 -0700 | [diff] [blame] | 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) \ |
| 54 | do { \ |
| 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 | |
Mike Frysinger | e50e2f2 | 2010-02-14 22:58:02 +0000 | [diff] [blame] | 61 | #if 0 |
| 62 | #define CORE_DUMP_USE_REGSET |
| 63 | #endif |
Bryan Wu | 1394f03 | 2007-05-06 14:50:22 -0700 | [diff] [blame] | 64 | #define ELF_FDPIC_CORE_EFLAGS EF_BFIN_FDPIC |
| 65 | #define ELF_EXEC_PAGESIZE 4096 |
| 66 | |
Mike Frysinger | 595d681 | 2009-06-02 00:35:33 +0000 | [diff] [blame] | 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 */ |
Bryan Wu | 1394f03 | 2007-05-06 14:50:22 -0700 | [diff] [blame] | 89 | |
| 90 | /* arithmetic relocations */ |
Mike Frysinger | 595d681 | 2009-06-02 00:35:33 +0000 | [diff] [blame] | 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 |
Bryan Wu | 1394f03 | 2007-05-06 14:50:22 -0700 | [diff] [blame] | 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)); |
Mike Frysinger | 88a0ade | 2010-05-22 21:25:39 -0400 | [diff] [blame] | 122 | #define ELF_CORE_COPY_FPREGS(...) 0 /* Blackfin has no FPU */ |
Bryan Wu | 1394f03 | 2007-05-06 14:50:22 -0700 | [diff] [blame] | 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 | |
Martin Schwidefsky | 0b59268 | 2008-10-16 15:39:57 +0200 | [diff] [blame] | 135 | #define SET_PERSONALITY(ex) set_personality(PER_LINUX) |
Bryan Wu | 1394f03 | 2007-05-06 14:50:22 -0700 | [diff] [blame] | 136 | |
| 137 | #endif |