1/* cris.h -- Header file for CRIS opcode and register tables.
2 Copyright (C) 2000, 2001, 2004 Free Software Foundation, Inc.
3 Contributed by Axis Communications AB, Lund, Sweden.
4 Originally written for GAS 1.38.1 by Mikael Asker.
5 Updated, BFDized and GNUified by Hans-Peter Nilsson.
6
7This file is part of GAS, GDB and the GNU binutils.
8
9GAS, GDB, and GNU binutils is free software; you can redistribute it
10and/or modify it under the terms of the GNU General Public License as
11published by the Free Software Foundation; either version 2, or (at your
12option) any later version.
13
14GAS, GDB, and GNU binutils are distributed in the hope that they will be
15useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
16MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17GNU General Public License for more details.
18
19You should have received a copy of the GNU General Public License
20along with this program; if not, see <http://www.gnu.org/licenses/>. */
21
22#ifndef TARGET_CRIS_OPCODE_CRIS_H
23#define TARGET_CRIS_OPCODE_CRIS_H
24
25#if !defined(__STDC__) && !defined(const)
26#define const
27#endif
28
29
30/* Registers. */
31#define MAX_REG (15)
32#define CRIS_REG_SP (14)
33#define CRIS_REG_PC (15)
34
35/* CPU version control of disassembly and assembly of instructions.
36 May affect how the instruction is assembled, at least the size of
37 immediate operands. */
38enum cris_insn_version_usage
39{
40 /* Any version. */
41 cris_ver_version_all=0,
42
43 /* Indeterminate (intended for disassembly only, or obsolete). */
44 cris_ver_warning,
45
46 /* Only for v0..3 (Etrax 1..4). */
47 cris_ver_v0_3,
48
49 /* Only for v3 or higher (ETRAX 4 and beyond). */
50 cris_ver_v3p,
51
52 /* Only for v8 (Etrax 100). */
53 cris_ver_v8,
54
55 /* Only for v8 or higher (ETRAX 100, ETRAX 100 LX). */
56 cris_ver_v8p,
57
58 /* Only for v0..10. FIXME: Not sure what to do with this. */
59 cris_ver_sim_v0_10,
60
61 /* Only for v0..10. */
62 cris_ver_v0_10,
63
64 /* Only for v3..10. (ETRAX 4, ETRAX 100 and ETRAX 100 LX). */
65 cris_ver_v3_10,
66
67 /* Only for v8..10 (ETRAX 100 and ETRAX 100 LX). */
68 cris_ver_v8_10,
69
70 /* Only for v10 (ETRAX 100 LX) and same series. */
71 cris_ver_v10,
72
73 /* Only for v10 (ETRAX 100 LX) and same series. */
74 cris_ver_v10p,
75
76 /* Only for v32 or higher (codename GUINNESS).
77 Of course some or all these of may change to cris_ver_v32p if/when
78 there's a new revision. */
79 cris_ver_v32p
80};
81
82
83/* Special registers. */
84struct cris_spec_reg
85{
86 const char *const name;
87 unsigned int number;
88
89 /* The size of the register. */
90 unsigned int reg_size;
91
92 /* What CPU version the special register of that name is implemented
93 in. If cris_ver_warning, emit an unimplemented-warning. */
94 enum cris_insn_version_usage applicable_version;
95
96 /* There might be a specific warning for using a special register
97 here. */
98 const char *const warning;
99};
100extern const struct cris_spec_reg cris_spec_regs[];
101
102
103/* Support registers (kind of special too, but not named as such). */
104struct cris_support_reg
105{
106 const char *const name;
107 unsigned int number;
108};
109extern const struct cris_support_reg cris_support_regs[];
110
111/* Opcode-dependent constants. */
112#define AUTOINCR_BIT (0x04)
113
114/* Prefixes. */
115#define BDAP_QUICK_OPCODE (0x0100)
116#define BDAP_QUICK_Z_BITS (0x0e00)
117
118#define BIAP_OPCODE (0x0540)
119#define BIAP_Z_BITS (0x0a80)
120
121#define DIP_OPCODE (0x0970)
122#define DIP_Z_BITS (0xf280)
123
124#define BDAP_INDIR_LOW (0x40)
125#define BDAP_INDIR_LOW_Z (0x80)
126#define BDAP_INDIR_HIGH (0x09)
127#define BDAP_INDIR_HIGH_Z (0x02)
128
129#define BDAP_INDIR_OPCODE (BDAP_INDIR_HIGH * 0x0100 + BDAP_INDIR_LOW)
130#define BDAP_INDIR_Z_BITS (BDAP_INDIR_HIGH_Z * 0x100 + BDAP_INDIR_LOW_Z)
131#define BDAP_PC_LOW (BDAP_INDIR_LOW + CRIS_REG_PC)
132#define BDAP_INCR_HIGH (BDAP_INDIR_HIGH + AUTOINCR_BIT)
133
134/* No prefix must have this code for its "match" bits in the
135 opcode-table. "BCC .+2" will do nicely. */
136#define NO_CRIS_PREFIX 0
137
138/* Definitions for condition codes. */
139#define CC_CC 0x0
140#define CC_HS 0x0
141#define CC_CS 0x1
142#define CC_LO 0x1
143#define CC_NE 0x2
144#define CC_EQ 0x3
145#define CC_VC 0x4
146#define CC_VS 0x5
147#define CC_PL 0x6
148#define CC_MI 0x7
149#define CC_LS 0x8
150#define CC_HI 0x9
151#define CC_GE 0xA
152#define CC_LT 0xB
153#define CC_GT 0xC
154#define CC_LE 0xD
155#define CC_A 0xE
156#define CC_EXT 0xF
157
158/* A table of strings "cc", "cs"... indexed with condition code
159 values as above. */
160extern const char *const cris_cc_strings[];
161
162/* Bcc quick. */
163#define BRANCH_QUICK_LOW (0)
164#define BRANCH_QUICK_HIGH (0)
165#define BRANCH_QUICK_OPCODE (BRANCH_QUICK_HIGH * 0x0100 + BRANCH_QUICK_LOW)
166#define BRANCH_QUICK_Z_BITS (0x0F00)
167
168/* BA quick. */
169#define BA_QUICK_HIGH (BRANCH_QUICK_HIGH + CC_A * 0x10)
170#define BA_QUICK_OPCODE (BA_QUICK_HIGH * 0x100 + BRANCH_QUICK_LOW)
171
172/* Bcc [PC+]. */
173#define BRANCH_PC_LOW (0xFF)
174#define BRANCH_INCR_HIGH (0x0D)
175#define BA_PC_INCR_OPCODE \
176 ((BRANCH_INCR_HIGH + CC_A * 0x10) * 0x0100 + BRANCH_PC_LOW)
177
178/* Jump. */
179/* Note that old versions generated special register 8 (in high bits)
180 and not-that-old versions recognized it as a jump-instruction.
181 That opcode now belongs to JUMPU. */
182#define JUMP_INDIR_OPCODE (0x0930)
183#define JUMP_INDIR_Z_BITS (0xf2c0)
184#define JUMP_PC_INCR_OPCODE \
185 (JUMP_INDIR_OPCODE + AUTOINCR_BIT * 0x0100 + CRIS_REG_PC)
186
187#define MOVE_M_TO_PREG_OPCODE 0x0a30
188#define MOVE_M_TO_PREG_ZBITS 0x01c0
189
190/* BDAP.D N,PC. */
191#define MOVE_PC_INCR_OPCODE_PREFIX \
192 (((BDAP_INCR_HIGH | (CRIS_REG_PC << 4)) << 8) | BDAP_PC_LOW | (2 << 4))
193#define MOVE_PC_INCR_OPCODE_SUFFIX \
194 (MOVE_M_TO_PREG_OPCODE | CRIS_REG_PC | (AUTOINCR_BIT << 8))
195
196#define JUMP_PC_INCR_OPCODE_V32 (0x0DBF)
197
198/* BA DWORD (V32). */
199#define BA_DWORD_OPCODE (0x0EBF)
200
201/* Nop. */
202#define NOP_OPCODE (0x050F)
203#define NOP_Z_BITS (0xFFFF ^ NOP_OPCODE)
204
205#define NOP_OPCODE_V32 (0x05B0)
206#define NOP_Z_BITS_V32 (0xFFFF ^ NOP_OPCODE_V32)
207
208/* For the compatibility mode, let's use "MOVE R0,P0". Doesn't affect
209 registers or flags. Unfortunately shuts off interrupts for one cycle
210 for < v32, but there doesn't seem to be any alternative without that
211 effect. */
212#define NOP_OPCODE_COMMON (0x630)
213#define NOP_OPCODE_ZBITS_COMMON (0xffff & ~NOP_OPCODE_COMMON)
214
215/* LAPC.D */
216#define LAPC_DWORD_OPCODE (0x0D7F)
217#define LAPC_DWORD_Z_BITS (0x0fff & ~LAPC_DWORD_OPCODE)
218
219/* Structure of an opcode table entry. */
220enum cris_imm_oprnd_size_type
221{
222 /* No size is applicable. */
223 SIZE_NONE,
224
225 /* Always 32 bits. */
226 SIZE_FIX_32,
227
228 /* Indicated by size of special register. */
229 SIZE_SPEC_REG,
230
231 /* Indicated by size field, signed. */
232 SIZE_FIELD_SIGNED,
233
234 /* Indicated by size field, unsigned. */
235 SIZE_FIELD_UNSIGNED,
236
237 /* Indicated by size field, no sign implied. */
238 SIZE_FIELD
239};
240
241/* For GDB. FIXME: Is this the best way to handle opcode
242 interpretation? */
243enum cris_op_type
244{
245 cris_not_implemented_op = 0,
246 cris_abs_op,
247 cris_addi_op,
248 cris_asr_op,
249 cris_asrq_op,
250 cris_ax_ei_setf_op,
251 cris_bdap_prefix,
252 cris_biap_prefix,
253 cris_break_op,
254 cris_btst_nop_op,
255 cris_clearf_di_op,
256 cris_dip_prefix,
257 cris_dstep_logshift_mstep_neg_not_op,
258 cris_eight_bit_offset_branch_op,
259 cris_move_mem_to_reg_movem_op,
260 cris_move_reg_to_mem_movem_op,
261 cris_move_to_preg_op,
262 cris_muls_op,
263 cris_mulu_op,
264 cris_none_reg_mode_add_sub_cmp_and_or_move_op,
265 cris_none_reg_mode_clear_test_op,
266 cris_none_reg_mode_jump_op,
267 cris_none_reg_mode_move_from_preg_op,
268 cris_quick_mode_add_sub_op,
269 cris_quick_mode_and_cmp_move_or_op,
270 cris_quick_mode_bdap_prefix,
271 cris_reg_mode_add_sub_cmp_and_or_move_op,
272 cris_reg_mode_clear_op,
273 cris_reg_mode_jump_op,
274 cris_reg_mode_move_from_preg_op,
275 cris_reg_mode_test_op,
276 cris_scc_op,
277 cris_sixteen_bit_offset_branch_op,
278 cris_three_operand_add_sub_cmp_and_or_op,
279 cris_three_operand_bound_op,
280 cris_two_operand_bound_op,
281 cris_xor_op
282};
283
284struct cris_opcode
285{
286 /* The name of the insn. */
287 const char *name;
288
289 /* Bits that must be 1 for a match. */
290 unsigned int match;
291
292 /* Bits that must be 0 for a match. */
293 unsigned int lose;
294
295 /* See the table in "opcodes/cris-opc.c". */
296 const char *args;
297
298 /* Nonzero if this is a delayed branch instruction. */
299 char delayed;
300
301 /* Size of immediate operands. */
302 enum cris_imm_oprnd_size_type imm_oprnd_size;
303
304 /* Indicates which version this insn was first implemented in. */
305 enum cris_insn_version_usage applicable_version;
306
307 /* What kind of operation this is. */
308 enum cris_op_type op;
309};
310extern const struct cris_opcode cris_opcodes[];
311
312
313/* These macros are for the target-specific flags in disassemble_info
314 used at disassembly. */
315
316/* This insn accesses memory. This flag is more trustworthy than
317 checking insn_type for "dis_dref" which does not work for
318 e.g. "JSR [foo]". */
319#define CRIS_DIS_FLAG_MEMREF (1 << 0)
320
321/* The "target" field holds a register number. */
322#define CRIS_DIS_FLAG_MEM_TARGET_IS_REG (1 << 1)
323
324/* The "target2" field holds a register number; add it to "target". */
325#define CRIS_DIS_FLAG_MEM_TARGET2_IS_REG (1 << 2)
326
327/* Yet another add-on: the register in "target2" must be multiplied
328 by 2 before adding to "target". */
329#define CRIS_DIS_FLAG_MEM_TARGET2_MULT2 (1 << 3)
330
331/* Yet another add-on: the register in "target2" must be multiplied
332 by 4 (mutually exclusive with .._MULT2). */
333#define CRIS_DIS_FLAG_MEM_TARGET2_MULT4 (1 << 4)
334
335/* The register in "target2" is an indirect memory reference (of the
336 register there), add to "target". Assumed size is dword (mutually
337 exclusive with .._MULT[24]). */
338#define CRIS_DIS_FLAG_MEM_TARGET2_MEM (1 << 5)
339
340/* Add-on to CRIS_DIS_FLAG_MEM_TARGET2_MEM; the memory access is "byte";
341 sign-extended before adding to "target". */
342#define CRIS_DIS_FLAG_MEM_TARGET2_MEM_BYTE (1 << 6)
343
344/* Add-on to CRIS_DIS_FLAG_MEM_TARGET2_MEM; the memory access is "word";
345 sign-extended before adding to "target". */
346#define CRIS_DIS_FLAG_MEM_TARGET2_MEM_WORD (1 << 7)
347
348#endif /* TARGET_CRIS_OPCODE_CRIS_H */
349
350/*
351 * Local variables:
352 * eval: (c-set-style "gnu")
353 * indent-tabs-mode: t
354 * End:
355 */
356