1/* MSP430 ELF support for BFD.
2   Copyright (C) 2002-2020 Free Software Foundation, Inc.
3   Contributed by Dmitry Diky <diwil@mail.ru>
4
5   This file is part of BFD, the Binary File Descriptor library.
6
7   This program is free software; you can redistribute it and/or modify
8   it under the terms of the GNU General Public License as published by
9   the Free Software Foundation; either version 3 of the License, or
10   (at your option) any later version.
11
12   This program is distributed in the hope that it will be useful,
13   but WITHOUT ANY WARRANTY; without even the implied warranty of
14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15   GNU General Public License for more details.
16
17   You should have received a copy of the GNU General Public License
18   along with this program; if not, write to the Free Software Foundation,
19   Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
20
21#ifndef _ELF_MSP430_H
22#define _ELF_MSP430_H
23
24#include "elf/reloc-macros.h"
25
26/* Processor specific flags for the ELF header e_flags field.  */
27#define EF_MSP430_MACH 		0xff
28
29#define E_MSP430_MACH_MSP430x11  11
30#define E_MSP430_MACH_MSP430x11x1  110
31#define E_MSP430_MACH_MSP430x12  12
32#define E_MSP430_MACH_MSP430x13  13
33#define E_MSP430_MACH_MSP430x14  14
34#define E_MSP430_MACH_MSP430x15  15
35#define E_MSP430_MACH_MSP430x16  16
36#define E_MSP430_MACH_MSP430x20  20
37#define E_MSP430_MACH_MSP430x22  22
38#define E_MSP430_MACH_MSP430x23  23
39#define E_MSP430_MACH_MSP430x24  24
40#define E_MSP430_MACH_MSP430x26  26
41#define E_MSP430_MACH_MSP430x31  31
42#define E_MSP430_MACH_MSP430x32  32
43#define E_MSP430_MACH_MSP430x33  33
44#define E_MSP430_MACH_MSP430x41  41
45#define E_MSP430_MACH_MSP430x42  42
46#define E_MSP430_MACH_MSP430x43  43
47#define E_MSP430_MACH_MSP430x44  44
48#define E_MSP430_MACH_MSP430X    45
49#define E_MSP430_MACH_MSP430x46  46
50#define E_MSP430_MACH_MSP430x47  47
51#define E_MSP430_MACH_MSP430x54  54
52
53#define SHT_MSP430_ATTRIBUTES	0x70000003	/* Section holds ABI attributes.  */
54#define SHT_MSP430_SEC_FLAGS	0x7f000005	/* Holds TI compiler's section flags.  */
55#define SHT_MSP430_SYM_ALIASES	0x7f000006	/* Holds TI compiler's symbol aliases.  */
56
57/* Tag values for an attribute section.  */
58#define OFBA_MSPABI_Tag_ISA		4
59#define OFBA_MSPABI_Tag_Code_Model	6
60#define OFBA_MSPABI_Tag_Data_Model	8
61#define OFBA_MSPABI_Tag_enum_size	10	/* Unused by GNU.  */
62
63/* GNU Object attribute tags.  */
64enum
65{
66  /* 0-3 are generic.  */
67
68  /* Define a GNU attribute for keeping track of whether the compiler has
69     generated code assuming that the upper region could be in use.
70     Added by the assembler based on the -mdata-region option.
71     This tag is ignored unless the large memory model is in use.  */
72  Tag_GNU_MSP430_Data_Region = 4,
73};
74
75/* Object attribute values.  */
76enum
77{
78  /* Values defined for OFBA_MSPABI_Tag_ISA.  */
79  OFBA_MSPABI_Val_ISA_NONE = 0,
80  OFBA_MSPABI_Val_ISA_MSP430 = 1,
81  OFBA_MSPABI_Val_ISA_MSP430X = 2,
82
83  /* Values defined for OFBA_MSPABI_Tag_Code_Model.  */
84  OFBA_MSPABI_Val_Code_Model_NONE = 0,
85  OFBA_MSPABI_Val_Code_Model_SMALL = 1,
86  OFBA_MSPABI_Val_Code_Model_LARGE = 2,
87
88  /* Values defined for OFBA_MSPABI_Tag_Data_Model.  */
89  OFBA_MSPABI_Val_Data_Model_NONE = 0,
90  OFBA_MSPABI_Val_Data_Model_SMALL = 1,
91  OFBA_MSPABI_Val_Data_Model_LARGE = 2,
92  OFBA_MSPABI_Val_Data_Model_RESTRICTED = 3,	/* Unused by GNU.  */
93
94  /* Values defined for Tag_GNU_MSP430_Data_Region.  */
95  Val_GNU_MSP430_Data_Region_NONE = 0,
96  /* The default data region.  Assumes all data is below address 0x10000.  */
97  Val_GNU_MSP430_Data_Region_Lower = 1,
98  /* Set if -mdata-region={none,upper,either}.  Assumes
99     data could be placed at or above address 0x10000.  */
100  Val_GNU_MSP430_Data_Region_Any = 2,
101};
102
103/* Relocations.  */
104START_RELOC_NUMBERS (elf_msp430_reloc_type)
105     RELOC_NUMBER (R_MSP430_NONE,		0)
106     RELOC_NUMBER (R_MSP430_32,			1)
107     RELOC_NUMBER (R_MSP430_10_PCREL,		2)
108     RELOC_NUMBER (R_MSP430_16, 		3)
109     RELOC_NUMBER (R_MSP430_16_PCREL, 		4)
110     RELOC_NUMBER (R_MSP430_16_BYTE, 		5)
111     RELOC_NUMBER (R_MSP430_16_PCREL_BYTE, 	6)
112     RELOC_NUMBER (R_MSP430_2X_PCREL,		7)
113     RELOC_NUMBER (R_MSP430_RL_PCREL,		8)
114     RELOC_NUMBER (R_MSP430_8,			9)
115     RELOC_NUMBER (R_MSP430_SYM_DIFF,		10)
116END_RELOC_NUMBERS (R_MSP430_max)
117
118START_RELOC_NUMBERS (elf_msp430x_reloc_type)
119     RELOC_NUMBER (R_MSP430_ABS32, 1)		/* aka R_MSP430_32 */
120     RELOC_NUMBER (R_MSP430_ABS16, 2)		/* aka R_MSP430_16 */
121     RELOC_NUMBER (R_MSP430_ABS8, 3)
122     RELOC_NUMBER (R_MSP430_PCR16, 4)		/* aka R_MSP430_16_PCREL */
123     RELOC_NUMBER (R_MSP430X_PCR20_EXT_SRC, 5)
124     RELOC_NUMBER (R_MSP430X_PCR20_EXT_DST, 6)
125     RELOC_NUMBER (R_MSP430X_PCR20_EXT_ODST, 7)
126     RELOC_NUMBER (R_MSP430X_ABS20_EXT_SRC, 8)
127     RELOC_NUMBER (R_MSP430X_ABS20_EXT_DST, 9)
128     RELOC_NUMBER (R_MSP430X_ABS20_EXT_ODST, 10)
129     RELOC_NUMBER (R_MSP430X_ABS20_ADR_SRC, 11)
130     RELOC_NUMBER (R_MSP430X_ABS20_ADR_DST, 12)
131     RELOC_NUMBER (R_MSP430X_PCR16, 13)		/* Like R_MSP430_PCR16 but with overflow checking.  */
132     RELOC_NUMBER (R_MSP430X_PCR20_CALL, 14)
133     RELOC_NUMBER (R_MSP430X_ABS16, 15)		/* Like R_MSP430_ABS16 but with overflow checking.  */
134     RELOC_NUMBER (R_MSP430_ABS_HI16, 16)
135     RELOC_NUMBER (R_MSP430_PREL31, 17)
136     RELOC_NUMBER (R_MSP430_EHTYPE, 18)		/* Mentioned in ABI.  */
137     RELOC_NUMBER (R_MSP430X_10_PCREL, 19)	/* Red Hat invention.  Used for Jump instructions.  */
138     RELOC_NUMBER (R_MSP430X_2X_PCREL, 20)	/* Red Hat invention.  Used for relaxing jumps.  */
139     RELOC_NUMBER (R_MSP430X_SYM_DIFF, 21)	/* Red Hat invention.  Used for relaxing debug info.  */
140END_RELOC_NUMBERS (R_MSP430x_max)
141
142#endif /* _ELF_MSP430_H */
143