1 | /* m68hc11 & m68hc12 ELF support for BFD.
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2 | Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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3 |
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4 | This file is part of BFD, the Binary File Descriptor library.
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5 |
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6 | This program is free software; you can redistribute it and/or modify
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7 | it under the terms of the GNU General Public License as published by
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8 | the Free Software Foundation; either version 2 of the License, or
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9 | (at your option) any later version.
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10 |
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11 | This program is distributed in the hope that it will be useful,
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12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | GNU General Public License for more details.
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15 |
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16 | You should have received a copy of the GNU General Public License
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17 | along with this program; if not, write to the Free Software Foundation,
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18 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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19 |
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20 | #ifndef _ELF_M68HC11_H
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21 | #define _ELF_M68HC11_H
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22 |
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23 | #include "elf/reloc-macros.h"
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24 |
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25 | /* Relocation types. */
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26 | START_RELOC_NUMBERS (elf_m68hc11_reloc_type)
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27 | RELOC_NUMBER (R_M68HC11_NONE, 0)
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28 | RELOC_NUMBER (R_M68HC11_8, 1)
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29 | RELOC_NUMBER (R_M68HC11_HI8, 2)
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30 | RELOC_NUMBER (R_M68HC11_LO8, 3)
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31 | RELOC_NUMBER (R_M68HC11_PCREL_8, 4)
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32 | RELOC_NUMBER (R_M68HC11_16, 5)
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33 | RELOC_NUMBER (R_M68HC11_32, 6)
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34 | RELOC_NUMBER (R_M68HC11_3B, 7)
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35 | RELOC_NUMBER (R_M68HC11_PCREL_16, 8)
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36 |
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37 | /* These are GNU extensions to enable C++ vtable garbage collection. */
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38 | RELOC_NUMBER (R_M68HC11_GNU_VTINHERIT, 9)
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39 | RELOC_NUMBER (R_M68HC11_GNU_VTENTRY, 10)
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40 |
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41 | RELOC_NUMBER (R_M68HC11_24, 11)
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42 | RELOC_NUMBER (R_M68HC11_LO16, 12)
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43 | RELOC_NUMBER (R_M68HC11_PAGE, 13)
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44 |
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45 | /* GNU extension for linker relaxation.
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46 | Mark beginning of a jump instruction (any form). */
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47 | RELOC_NUMBER (R_M68HC11_RL_JUMP, 20)
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48 |
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49 | /* Mark beginning of Gcc relaxation group instruction. */
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50 | RELOC_NUMBER (R_M68HC11_RL_GROUP, 21)
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51 | END_RELOC_NUMBERS (R_M68HC11_max)
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52 |
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53 | /* Processor specific flags for the ELF header e_flags field. */
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54 |
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55 | /* ABI identification. */
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56 | #define EF_M68HC11_ABI 0x00000000F
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57 |
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58 | /* Integers are 32-bit long. */
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59 | #define E_M68HC11_I32 0x000000001
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60 |
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61 | /* Doubles are 64-bit long. */
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62 | #define E_M68HC11_F64 0x000000002
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63 |
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64 | /* Uses 68HC12 memory banks. */
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65 | #define E_M68HC12_BANKS 0x000000004
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66 |
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67 | #define EF_M68HC11_MACH_MASK 0xF0
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68 | #define EF_M68HC11_GENERIC 0x00 /* Generic 68HC12/backward compatibility. */
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69 | #define EF_M68HC12_MACH 0x10 /* 68HC12 microcontroller. */
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70 | #define EF_M68HCS12_MACH 0x20 /* 68HCS12 microcontroller. */
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71 | #define EF_M68HC11_MACH(mach) ((mach) & EF_M68HC11_MACH_MASK)
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72 |
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73 | /* True if we can merge machines. A generic HC12 can work on any proc
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74 | but once we have specific code, merge is not possible. */
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75 | #define EF_M68HC11_CAN_MERGE_MACH(mach1, mach2) \
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76 | ((EF_M68HC11_MACH (mach1) == EF_M68HC11_MACH (mach2)) \
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77 | || (EF_M68HC11_MACH (mach1) == EF_M68HC11_GENERIC) \
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78 | || (EF_M68HC11_MACH (mach2) == EF_M68HC11_GENERIC))
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79 |
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80 | #define EF_M68HC11_MERGE_MACH(mach1, mach2) \
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81 | (((EF_M68HC11_MACH (mach1) == EF_M68HC11_MACH (mach2)) \
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82 | || (EF_M68HC11_MACH (mach1) == EF_M68HC11_GENERIC)) ? \
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83 | EF_M68HC11_MACH (mach2) : EF_M68HC11_MACH (mach1))
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84 |
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85 | |
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86 |
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87 | /* Special values for the st_other field in the symbol table. These
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88 | are used for 68HC12 to identify far functions (must be called with
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89 | 'call' and returns with 'rtc'). */
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90 | #define STO_M68HC12_FAR 0x80
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91 |
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92 | /* Identify interrupt handlers. This is used by the debugger to
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93 | correctly compute the stack frame. */
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94 | #define STO_M68HC12_INTERRUPT 0x40
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95 |
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96 | #endif
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