1 /* m68hc11 & m68hc12 ELF support for BFD.
2 Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
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.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software Foundation,
18 Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
20 #ifndef _ELF_M68HC11_H
21 #define _ELF_M68HC11_H
23 #include "elf/reloc-macros.h"
25 /* Relocation types. */
26 START_RELOC_NUMBERS (elf_m68hc11_reloc_type
)
27 RELOC_NUMBER (R_M68HC11_NONE
, 0)
28 RELOC_NUMBER (R_M68HC11_8
, 1)
29 RELOC_NUMBER (R_M68HC11_HI8
, 2)
30 RELOC_NUMBER (R_M68HC11_LO8
, 3)
31 RELOC_NUMBER (R_M68HC11_PCREL_8
, 4)
32 RELOC_NUMBER (R_M68HC11_16
, 5)
33 RELOC_NUMBER (R_M68HC11_32
, 6)
34 RELOC_NUMBER (R_M68HC11_3B
, 7)
35 RELOC_NUMBER (R_M68HC11_PCREL_16
, 8)
37 /* These are GNU extensions to enable C++ vtable garbage collection. */
38 RELOC_NUMBER (R_M68HC11_GNU_VTINHERIT
, 9)
39 RELOC_NUMBER (R_M68HC11_GNU_VTENTRY
, 10)
41 RELOC_NUMBER (R_M68HC11_24
, 11)
42 RELOC_NUMBER (R_M68HC11_LO16
, 12)
43 RELOC_NUMBER (R_M68HC11_PAGE
, 13)
45 /* GNU extension for linker relaxation.
46 Mark beginning of a jump instruction (any form). */
47 RELOC_NUMBER (R_M68HC11_RL_JUMP
, 20)
49 /* Mark beginning of Gcc relaxation group instruction. */
50 RELOC_NUMBER (R_M68HC11_RL_GROUP
, 21)
51 END_RELOC_NUMBERS (R_M68HC11_max
)
53 /* Processor specific flags for the ELF header e_flags field. */
55 /* ABI identification. */
56 #define EF_M68HC11_ABI 0x00000000F
58 /* Integers are 32-bit long. */
59 #define E_M68HC11_I32 0x000000001
61 /* Doubles are 64-bit long. */
62 #define E_M68HC11_F64 0x000000002
64 /* Uses 68HC12 memory banks. */
65 #define E_M68HC12_BANKS 0x000000004
67 #define EF_M68HC11_MACH_MASK 0xF0
68 #define EF_M68HC11_GENERIC 0x00 /* Generic 68HC12/backward compatibility. */
69 #define EF_M68HC12_MACH 0x10 /* 68HC12 microcontroller. */
70 #define EF_M68HCS12_MACH 0x20 /* 68HCS12 microcontroller. */
71 #define EF_M68HC11_MACH(mach) ((mach) & EF_M68HC11_MACH_MASK)
73 /* True if we can merge machines. A generic HC12 can work on any proc
74 but once we have specific code, merge is not possible. */
75 #define EF_M68HC11_CAN_MERGE_MACH(mach1, mach2) \
76 ((EF_M68HC11_MACH (mach1) == EF_M68HC11_MACH (mach2)) \
77 || (EF_M68HC11_MACH (mach1) == EF_M68HC11_GENERIC) \
78 || (EF_M68HC11_MACH (mach2) == EF_M68HC11_GENERIC))
80 #define EF_M68HC11_MERGE_MACH(mach1, mach2) \
81 (((EF_M68HC11_MACH (mach1) == EF_M68HC11_MACH (mach2)) \
82 || (EF_M68HC11_MACH (mach1) == EF_M68HC11_GENERIC)) ? \
83 EF_M68HC11_MACH (mach2) : EF_M68HC11_MACH (mach1))
86 /* Special values for the st_other field in the symbol table. These
87 are used for 68HC12 to identify far functions (must be called with
88 'call' and returns with 'rtc'). */
89 #define STO_M68HC12_FAR 0x80
91 /* Identify interrupt handlers. This is used by the debugger to
92 correctly compute the stack frame. */
93 #define STO_M68HC12_INTERRUPT 0x40
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