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5191 | serge | 1 | /* Internal definitions for configurable Xtensa ISA support. |
6324 | serge | 2 | Copyright (C) 2003-2015 Free Software Foundation, Inc. |
5191 | serge | 3 | |
4 | This file is part of BFD, the Binary File Descriptor library. |
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5 | |||
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 3 of the License, or |
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9 | (at your option) any later version. |
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10 | |||
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 | |||
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 |
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18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, |
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19 | USA. */ |
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20 | |||
21 | #ifndef XTENSA_ISA_INTERNAL_H |
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22 | #define XTENSA_ISA_INTERNAL_H |
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23 | |||
24 | /* Flags. */ |
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25 | |||
26 | #define XTENSA_OPERAND_IS_REGISTER 0x00000001 |
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27 | #define XTENSA_OPERAND_IS_PCRELATIVE 0x00000002 |
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28 | #define XTENSA_OPERAND_IS_INVISIBLE 0x00000004 |
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29 | #define XTENSA_OPERAND_IS_UNKNOWN 0x00000008 |
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30 | |||
31 | #define XTENSA_OPCODE_IS_BRANCH 0x00000001 |
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32 | #define XTENSA_OPCODE_IS_JUMP 0x00000002 |
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33 | #define XTENSA_OPCODE_IS_LOOP 0x00000004 |
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34 | #define XTENSA_OPCODE_IS_CALL 0x00000008 |
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35 | |||
36 | #define XTENSA_STATE_IS_EXPORTED 0x00000001 |
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37 | #define XTENSA_STATE_IS_SHARED_OR 0x00000002 |
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38 | |||
39 | #define XTENSA_INTERFACE_HAS_SIDE_EFFECT 0x00000001 |
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40 | |||
41 | /* Function pointer typedefs */ |
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42 | typedef void (*xtensa_format_encode_fn) (xtensa_insnbuf); |
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43 | typedef void (*xtensa_get_slot_fn) (const xtensa_insnbuf, xtensa_insnbuf); |
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44 | typedef void (*xtensa_set_slot_fn) (xtensa_insnbuf, const xtensa_insnbuf); |
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45 | typedef int (*xtensa_opcode_decode_fn) (const xtensa_insnbuf); |
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46 | typedef uint32 (*xtensa_get_field_fn) (const xtensa_insnbuf); |
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47 | typedef void (*xtensa_set_field_fn) (xtensa_insnbuf, uint32); |
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48 | typedef int (*xtensa_immed_decode_fn) (uint32 *); |
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49 | typedef int (*xtensa_immed_encode_fn) (uint32 *); |
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50 | typedef int (*xtensa_do_reloc_fn) (uint32 *, uint32); |
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51 | typedef int (*xtensa_undo_reloc_fn) (uint32 *, uint32); |
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52 | typedef void (*xtensa_opcode_encode_fn) (xtensa_insnbuf); |
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53 | typedef int (*xtensa_format_decode_fn) (const xtensa_insnbuf); |
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54 | typedef int (*xtensa_length_decode_fn) (const unsigned char *); |
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55 | |||
56 | typedef struct xtensa_format_internal_struct |
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57 | { |
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58 | const char *name; /* Instruction format name. */ |
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59 | int length; /* Instruction length in bytes. */ |
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60 | xtensa_format_encode_fn encode_fn; |
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61 | int num_slots; |
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62 | int *slot_id; /* Array[num_slots] of slot IDs. */ |
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63 | } xtensa_format_internal; |
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64 | |||
65 | typedef struct xtensa_slot_internal_struct |
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66 | { |
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67 | const char *name; /* Not necessarily unique. */ |
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68 | const char *format; |
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69 | int position; |
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70 | xtensa_get_slot_fn get_fn; |
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71 | xtensa_set_slot_fn set_fn; |
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72 | xtensa_get_field_fn *get_field_fns; /* Array[field_id]. */ |
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73 | xtensa_set_field_fn *set_field_fns; /* Array[field_id]. */ |
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74 | xtensa_opcode_decode_fn opcode_decode_fn; |
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75 | const char *nop_name; |
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76 | } xtensa_slot_internal; |
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77 | |||
78 | typedef struct xtensa_operand_internal_struct |
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79 | { |
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80 | const char *name; |
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81 | int field_id; |
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82 | xtensa_regfile regfile; /* Register file. */ |
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83 | int num_regs; /* Usually 1; 2 for reg pairs, etc. */ |
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84 | uint32 flags; /* See XTENSA_OPERAND_* flags. */ |
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85 | xtensa_immed_encode_fn encode; /* Encode the operand value. */ |
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86 | xtensa_immed_decode_fn decode; /* Decode the value from the field. */ |
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87 | xtensa_do_reloc_fn do_reloc; /* Perform a PC-relative reloc. */ |
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88 | xtensa_undo_reloc_fn undo_reloc; /* Undo a PC-relative relocation. */ |
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89 | } xtensa_operand_internal; |
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90 | |||
91 | typedef struct xtensa_arg_internal_struct |
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92 | { |
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93 | union { |
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94 | int operand_id; /* For normal operands. */ |
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95 | xtensa_state state; /* For stateOperands. */ |
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96 | } u; |
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97 | char inout; /* Direction: 'i', 'o', or 'm'. */ |
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98 | } xtensa_arg_internal; |
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99 | |||
100 | typedef struct xtensa_iclass_internal_struct |
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101 | { |
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102 | int num_operands; /* Size of "operands" array. */ |
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103 | xtensa_arg_internal *operands; /* Array[num_operands]. */ |
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104 | |||
105 | int num_stateOperands; /* Size of "stateOperands" array. */ |
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106 | xtensa_arg_internal *stateOperands; /* Array[num_stateOperands]. */ |
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107 | |||
108 | int num_interfaceOperands; /* Size of "interfaceOperands". */ |
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109 | xtensa_interface *interfaceOperands; /* Array[num_interfaceOperands]. */ |
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110 | } xtensa_iclass_internal; |
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111 | |||
112 | typedef struct xtensa_opcode_internal_struct |
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113 | { |
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114 | const char *name; /* Opcode mnemonic. */ |
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115 | int iclass_id; /* Iclass for this opcode. */ |
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116 | uint32 flags; /* See XTENSA_OPCODE_* flags. */ |
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117 | xtensa_opcode_encode_fn *encode_fns; /* Array[slot_id]. */ |
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118 | int num_funcUnit_uses; /* Number of funcUnit_use entries. */ |
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119 | xtensa_funcUnit_use *funcUnit_uses; /* Array[num_funcUnit_uses]. */ |
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120 | } xtensa_opcode_internal; |
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121 | |||
122 | typedef struct xtensa_regfile_internal_struct |
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123 | { |
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124 | const char *name; /* Full name of the regfile. */ |
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125 | const char *shortname; /* Abbreviated name. */ |
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126 | xtensa_regfile parent; /* View parent (or identity). */ |
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127 | int num_bits; /* Width of the registers. */ |
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128 | int num_entries; /* Number of registers. */ |
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129 | } xtensa_regfile_internal; |
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130 | |||
131 | typedef struct xtensa_interface_internal_struct |
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132 | { |
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133 | const char *name; /* Interface name. */ |
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134 | int num_bits; /* Width of the interface. */ |
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135 | uint32 flags; /* See XTENSA_INTERFACE_* flags. */ |
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136 | int class_id; /* Class of related interfaces. */ |
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137 | char inout; /* "i" or "o". */ |
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138 | } xtensa_interface_internal; |
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139 | |||
140 | typedef struct xtensa_funcUnit_internal_struct |
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141 | { |
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142 | const char *name; /* Functional unit name. */ |
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143 | int num_copies; /* Number of instances. */ |
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144 | } xtensa_funcUnit_internal; |
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145 | |||
146 | typedef struct xtensa_state_internal_struct |
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147 | { |
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148 | const char *name; /* State name. */ |
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149 | int num_bits; /* Number of state bits. */ |
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150 | uint32 flags; /* See XTENSA_STATE_* flags. */ |
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151 | } xtensa_state_internal; |
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152 | |||
153 | typedef struct xtensa_sysreg_internal_struct |
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154 | { |
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155 | const char *name; /* Register name. */ |
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156 | int number; /* Register number. */ |
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157 | int is_user; /* Non-zero if a "user register". */ |
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158 | } xtensa_sysreg_internal; |
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159 | |||
160 | typedef struct xtensa_lookup_entry_struct |
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161 | { |
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162 | const char *key; |
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163 | union |
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164 | { |
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165 | xtensa_opcode opcode; /* Internal opcode number. */ |
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166 | xtensa_sysreg sysreg; /* Internal sysreg number. */ |
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167 | xtensa_state state; /* Internal state number. */ |
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168 | xtensa_interface intf; /* Internal interface number. */ |
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169 | xtensa_funcUnit fun; /* Internal funcUnit number. */ |
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170 | } u; |
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171 | } xtensa_lookup_entry; |
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172 | |||
173 | typedef struct xtensa_isa_internal_struct |
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174 | { |
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175 | int is_big_endian; /* Endianness. */ |
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176 | int insn_size; /* Maximum length in bytes. */ |
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177 | int insnbuf_size; /* Number of insnbuf_words. */ |
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178 | |||
179 | int num_formats; |
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180 | xtensa_format_internal *formats; |
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181 | xtensa_format_decode_fn format_decode_fn; |
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182 | xtensa_length_decode_fn length_decode_fn; |
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183 | |||
184 | int num_slots; |
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185 | xtensa_slot_internal *slots; |
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186 | |||
187 | int num_fields; |
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188 | |||
189 | int num_operands; |
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190 | xtensa_operand_internal *operands; |
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191 | |||
192 | int num_iclasses; |
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193 | xtensa_iclass_internal *iclasses; |
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194 | |||
195 | int num_opcodes; |
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196 | xtensa_opcode_internal *opcodes; |
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197 | xtensa_lookup_entry *opname_lookup_table; |
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198 | |||
199 | int num_regfiles; |
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200 | xtensa_regfile_internal *regfiles; |
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201 | |||
202 | int num_states; |
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203 | xtensa_state_internal *states; |
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204 | xtensa_lookup_entry *state_lookup_table; |
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205 | |||
206 | int num_sysregs; |
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207 | xtensa_sysreg_internal *sysregs; |
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208 | xtensa_lookup_entry *sysreg_lookup_table; |
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209 | |||
210 | /* The current Xtensa ISA only supports 256 of each kind of sysreg so |
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211 | we can get away with implementing lookups with tables indexed by |
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212 | the register numbers. If we ever allow larger sysreg numbers, this |
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213 | may have to be reimplemented. The first entry in the following |
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214 | arrays corresponds to "special" registers and the second to "user" |
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215 | registers. */ |
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216 | int max_sysreg_num[2]; |
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217 | xtensa_sysreg *sysreg_table[2]; |
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218 | |||
219 | int num_interfaces; |
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220 | xtensa_interface_internal *interfaces; |
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221 | xtensa_lookup_entry *interface_lookup_table; |
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222 | |||
223 | int num_funcUnits; |
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224 | xtensa_funcUnit_internal *funcUnits; |
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225 | xtensa_lookup_entry *funcUnit_lookup_table; |
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226 | |||
227 | } xtensa_isa_internal; |
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228 | |||
229 | extern int xtensa_isa_name_compare (const void *, const void *); |
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230 | |||
231 | extern xtensa_isa_status xtisa_errno; |
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232 | extern char xtisa_error_msg[]; |
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233 | |||
234 | #endif /* !XTENSA_ISA_INTERNAL_H */ |