1/* m68hc11 & m68hc12 ELF support for BFD.
2   Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
3
4   This file is part of BFD, the Binary File Descriptor library.
5
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.
10
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.
15
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.  */
19
20#ifndef _ELF_M68HC11_H
21#define _ELF_M68HC11_H
22
23#include "elf/reloc-macros.h"
24
25/* Relocation types.  */
26START_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)
36
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)
40
41  RELOC_NUMBER (R_M68HC11_24, 11)
42  RELOC_NUMBER (R_M68HC11_LO16, 12)
43  RELOC_NUMBER (R_M68HC11_PAGE, 13)
44
45     /* GNU extension for linker relaxation.
46        Mark beginning of a jump instruction (any form).  */
47  RELOC_NUMBER (R_M68HC11_RL_JUMP, 20)
48
49     /* Mark beginning of Gcc relaxation group instruction.  */
50  RELOC_NUMBER (R_M68HC11_RL_GROUP, 21)
51END_RELOC_NUMBERS (R_M68HC11_max)
52
53/* Processor specific flags for the ELF header e_flags field.  */
54
55/* ABI identification.  */
56#define EF_M68HC11_ABI  0x00000000F
57
58/* Integers are 32-bit long.  */
59#define E_M68HC11_I32   0x000000001
60
61/* Doubles are 64-bit long.  */
62#define E_M68HC11_F64   0x000000002
63
64/* Uses 68HC12 memory banks.  */
65#define E_M68HC12_BANKS 0x000000004
66
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)
72
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))
79
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))
84
85
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
90
91/* Identify interrupt handlers.  This is used by the debugger to
92   correctly compute the stack frame.  */
93#define STO_M68HC12_INTERRUPT 0x40
94
95#endif
96