source: trunk/libs/newlib/src/include/opcode/cris.h @ 467

Last change on this file since 467 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc

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Line 
1/* cris.h -- Header file for CRIS opcode and register tables.
2   Copyright (C) 2000, 2001, 2004, 2010 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
7   This file is part of GAS, GDB and the GNU binutils.
8
9   GAS, GDB, and GNU binutils is free software; you can redistribute it
10   and/or modify it under the terms of the GNU General Public License as
11   published by the Free Software Foundation; either version 3, or (at your
12   option) any later version.
13
14   GAS, GDB, and GNU binutils are distributed in the hope that they will be
15   useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17   GNU General Public License for more details.
18
19   You should have received a copy of the GNU General Public License
20   along with this program; if not, write to the Free Software
21   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22   MA 02110-1301, USA.  */
23
24#ifndef __CRIS_H_INCLUDED_
25#define __CRIS_H_INCLUDED_
26
27#if !defined(__STDC__) && !defined(const)
28#define const
29#endif
30
31
32/* Registers.  */
33#define MAX_REG (15)
34#define REG_SP (14)
35#define REG_PC (15)
36
37/* CPU version control of disassembly and assembly of instructions.
38   May affect how the instruction is assembled, at least the size of
39   immediate operands.  */
40enum cris_insn_version_usage
41{
42  /* Any version.  */
43  cris_ver_version_all=0,
44
45  /* Indeterminate (intended for disassembly only, or obsolete).  */
46  cris_ver_warning,
47
48  /* Only for v0..3 (Etrax 1..4).  */
49  cris_ver_v0_3,
50
51  /* Only for v3 or higher (ETRAX 4 and beyond).  */
52  cris_ver_v3p,
53
54  /* Only for v8 (Etrax 100).  */
55  cris_ver_v8,
56
57  /* Only for v8 or higher (ETRAX 100, ETRAX 100 LX).  */
58  cris_ver_v8p,
59
60  /* Only for v0..10.  FIXME: Not sure what to do with this.  */
61  cris_ver_sim_v0_10,
62
63  /* Only for v0..10.  */
64  cris_ver_v0_10,
65
66  /* Only for v3..10.  (ETRAX 4, ETRAX 100 and ETRAX 100 LX).  */
67  cris_ver_v3_10,
68
69  /* Only for v8..10 (ETRAX 100 and ETRAX 100 LX).  */
70  cris_ver_v8_10,
71
72  /* Only for v10 (ETRAX 100 LX) and same series.  */
73  cris_ver_v10,
74
75  /* Only for v10 (ETRAX 100 LX) and same series.  */
76  cris_ver_v10p,
77
78  /* Only for v32 or higher (codename GUINNESS).
79     Of course some or all these of may change to cris_ver_v32p if/when
80     there's a new revision. */
81  cris_ver_v32p
82};
83
84
85/* Special registers.  */
86struct cris_spec_reg
87{
88  const char *const name;
89  unsigned int number;
90
91  /* The size of the register.  */
92  unsigned int reg_size;
93
94  /* What CPU version the special register of that name is implemented
95     in.  If cris_ver_warning, emit an unimplemented-warning.  */
96  enum cris_insn_version_usage applicable_version;
97
98  /* There might be a specific warning for using a special register
99     here.  */
100  const char *const warning;
101};
102extern const struct cris_spec_reg cris_spec_regs[];
103
104
105/* Support registers (kind of special too, but not named as such).  */
106struct cris_support_reg
107{
108  const char *const name;
109  unsigned int number;
110};
111extern const struct cris_support_reg cris_support_regs[];
112
113struct cris_cond15
114{
115  /* The name of the condition.  */
116  const char *const name;
117
118  /* What CPU version this condition name applies to.  */
119  enum cris_insn_version_usage applicable_version;
120};
121extern const struct cris_cond15 cris_conds15[];
122
123/* Opcode-dependent constants.  */
124#define AUTOINCR_BIT (0x04)
125
126/* Prefixes.  */
127#define BDAP_QUICK_OPCODE (0x0100)
128#define BDAP_QUICK_Z_BITS (0x0e00)
129
130#define BIAP_OPCODE       (0x0540)
131#define BIAP_Z_BITS       (0x0a80)
132
133#define DIP_OPCODE        (0x0970)
134#define DIP_Z_BITS        (0xf280)
135
136#define BDAP_INDIR_LOW    (0x40)
137#define BDAP_INDIR_LOW_Z  (0x80)
138#define BDAP_INDIR_HIGH   (0x09)
139#define BDAP_INDIR_HIGH_Z (0x02)
140
141#define BDAP_INDIR_OPCODE (BDAP_INDIR_HIGH * 0x0100 + BDAP_INDIR_LOW)
142#define BDAP_INDIR_Z_BITS (BDAP_INDIR_HIGH_Z * 0x100 + BDAP_INDIR_LOW_Z)
143#define BDAP_PC_LOW       (BDAP_INDIR_LOW + REG_PC)
144#define BDAP_INCR_HIGH    (BDAP_INDIR_HIGH + AUTOINCR_BIT)
145
146/* No prefix must have this code for its "match" bits in the
147   opcode-table.  "BCC .+2" will do nicely.  */
148#define NO_CRIS_PREFIX 0
149
150/* Definitions for condition codes.  */
151#define CC_CC  0x0
152#define CC_HS  0x0
153#define CC_CS  0x1
154#define CC_LO  0x1
155#define CC_NE  0x2
156#define CC_EQ  0x3
157#define CC_VC  0x4
158#define CC_VS  0x5
159#define CC_PL  0x6
160#define CC_MI  0x7
161#define CC_LS  0x8
162#define CC_HI  0x9
163#define CC_GE  0xA
164#define CC_LT  0xB
165#define CC_GT  0xC
166#define CC_LE  0xD
167#define CC_A   0xE
168#define CC_EXT 0xF
169
170/* A table of strings "cc", "cs"... indexed with condition code
171   values as above.  */
172extern const char *const cris_cc_strings[];
173
174/* Bcc quick.  */
175#define BRANCH_QUICK_LOW  (0)
176#define BRANCH_QUICK_HIGH (0)
177#define BRANCH_QUICK_OPCODE (BRANCH_QUICK_HIGH * 0x0100 + BRANCH_QUICK_LOW)
178#define BRANCH_QUICK_Z_BITS (0x0F00)
179
180/* BA quick.  */
181#define BA_QUICK_HIGH (BRANCH_QUICK_HIGH + CC_A * 0x10)
182#define BA_QUICK_OPCODE (BA_QUICK_HIGH * 0x100 + BRANCH_QUICK_LOW)
183
184/* Bcc [PC+].  */
185#define BRANCH_PC_LOW    (0xFF)
186#define BRANCH_INCR_HIGH (0x0D)
187#define BA_PC_INCR_OPCODE \
188 ((BRANCH_INCR_HIGH + CC_A * 0x10) * 0x0100 + BRANCH_PC_LOW)
189
190/* Jump.  */
191/* Note that old versions generated special register 8 (in high bits)
192   and not-that-old versions recognized it as a jump-instruction.
193   That opcode now belongs to JUMPU.  */
194#define JUMP_INDIR_OPCODE (0x0930)
195#define JUMP_INDIR_Z_BITS (0xf2c0)
196#define JUMP_PC_INCR_OPCODE \
197 (JUMP_INDIR_OPCODE + AUTOINCR_BIT * 0x0100 + REG_PC)
198
199#define MOVE_M_TO_PREG_OPCODE 0x0a30
200#define MOVE_M_TO_PREG_ZBITS 0x01c0
201
202/* BDAP.D N,PC.  */
203#define MOVE_PC_INCR_OPCODE_PREFIX \
204 (((BDAP_INCR_HIGH | (REG_PC << 4)) << 8) | BDAP_PC_LOW | (2 << 4))
205#define MOVE_PC_INCR_OPCODE_SUFFIX \
206 (MOVE_M_TO_PREG_OPCODE | REG_PC | (AUTOINCR_BIT << 8))
207
208#define JUMP_PC_INCR_OPCODE_V32 (0x0DBF)
209
210/* BA DWORD (V32).  */
211#define BA_DWORD_OPCODE (0x0EBF)
212
213/* Nop.  */
214#define NOP_OPCODE (0x050F)
215#define NOP_Z_BITS (0xFFFF ^ NOP_OPCODE)
216
217#define NOP_OPCODE_V32 (0x05B0)
218#define NOP_Z_BITS_V32 (0xFFFF ^ NOP_OPCODE_V32)
219
220/* For the compatibility mode, let's use "MOVE R0,P0".  Doesn't affect
221   registers or flags.  Unfortunately shuts off interrupts for one cycle
222   for < v32, but there doesn't seem to be any alternative without that
223   effect.  */
224#define NOP_OPCODE_COMMON (0x630)
225#define NOP_OPCODE_ZBITS_COMMON (0xffff & ~NOP_OPCODE_COMMON)
226
227/* LAPC.D  */
228#define LAPC_DWORD_OPCODE (0x0D7F)
229#define LAPC_DWORD_Z_BITS (0x0fff & ~LAPC_DWORD_OPCODE)
230
231/* Structure of an opcode table entry.  */
232enum cris_imm_oprnd_size_type
233{
234  /* No size is applicable.  */
235  SIZE_NONE,
236
237  /* Always 32 bits.  */
238  SIZE_FIX_32,
239
240  /* Indicated by size of special register.  */
241  SIZE_SPEC_REG,
242
243  /* Indicated by size field, signed.  */
244  SIZE_FIELD_SIGNED,
245
246  /* Indicated by size field, unsigned.  */
247  SIZE_FIELD_UNSIGNED,
248
249  /* Indicated by size field, no sign implied.  */
250  SIZE_FIELD
251};
252
253/* For GDB.  FIXME: Is this the best way to handle opcode
254   interpretation?  */
255enum cris_op_type
256{
257  cris_not_implemented_op = 0,
258  cris_abs_op,
259  cris_addi_op,
260  cris_asr_op,
261  cris_asrq_op,
262  cris_ax_ei_setf_op,
263  cris_bdap_prefix,
264  cris_biap_prefix,
265  cris_break_op,
266  cris_btst_nop_op,
267  cris_clearf_di_op,
268  cris_dip_prefix,
269  cris_dstep_logshift_mstep_neg_not_op,
270  cris_eight_bit_offset_branch_op,
271  cris_move_mem_to_reg_movem_op,
272  cris_move_reg_to_mem_movem_op,
273  cris_move_to_preg_op,
274  cris_muls_op,
275  cris_mulu_op,
276  cris_none_reg_mode_add_sub_cmp_and_or_move_op,
277  cris_none_reg_mode_clear_test_op,
278  cris_none_reg_mode_jump_op,
279  cris_none_reg_mode_move_from_preg_op,
280  cris_quick_mode_add_sub_op,
281  cris_quick_mode_and_cmp_move_or_op,
282  cris_quick_mode_bdap_prefix,
283  cris_reg_mode_add_sub_cmp_and_or_move_op,
284  cris_reg_mode_clear_op,
285  cris_reg_mode_jump_op,
286  cris_reg_mode_move_from_preg_op,
287  cris_reg_mode_test_op,
288  cris_scc_op,
289  cris_sixteen_bit_offset_branch_op,
290  cris_three_operand_add_sub_cmp_and_or_op,
291  cris_three_operand_bound_op,
292  cris_two_operand_bound_op,
293  cris_xor_op
294};
295
296struct cris_opcode
297{
298  /* The name of the insn.  */
299  const char *name;
300
301  /* Bits that must be 1 for a match.  */
302  unsigned int match;
303
304  /* Bits that must be 0 for a match.  */
305  unsigned int lose;
306
307  /* See the table in "opcodes/cris-opc.c".  */
308  const char *args;
309
310  /* Nonzero if this is a delayed branch instruction.  */
311  char delayed;
312
313  /* Size of immediate operands.  */
314  enum cris_imm_oprnd_size_type imm_oprnd_size;
315
316  /* Indicates which version this insn was first implemented in.  */
317  enum cris_insn_version_usage applicable_version;
318
319  /* What kind of operation this is.  */
320  enum cris_op_type op;
321};
322extern const struct cris_opcode cris_opcodes[];
323
324
325/* These macros are for the target-specific flags in disassemble_info
326   used at disassembly.  */
327
328/* This insn accesses memory.  This flag is more trustworthy than
329   checking insn_type for "dis_dref" which does not work for
330   e.g. "JSR [foo]".  */
331#define CRIS_DIS_FLAG_MEMREF (1 << 0)
332
333/* The "target" field holds a register number.  */
334#define CRIS_DIS_FLAG_MEM_TARGET_IS_REG (1 << 1)
335
336/* The "target2" field holds a register number; add it to "target".  */
337#define CRIS_DIS_FLAG_MEM_TARGET2_IS_REG (1 << 2)
338
339/* Yet another add-on: the register in "target2" must be multiplied
340   by 2 before adding to "target".  */
341#define CRIS_DIS_FLAG_MEM_TARGET2_MULT2 (1 << 3)
342
343/* Yet another add-on: the register in "target2" must be multiplied
344   by 4 (mutually exclusive with .._MULT2).  */ 
345#define CRIS_DIS_FLAG_MEM_TARGET2_MULT4 (1 << 4)
346
347/* The register in "target2" is an indirect memory reference (of the
348   register there), add to "target".  Assumed size is dword (mutually
349   exclusive with .._MULT[24]).  */
350#define CRIS_DIS_FLAG_MEM_TARGET2_MEM (1 << 5)
351
352/* Add-on to CRIS_DIS_FLAG_MEM_TARGET2_MEM; the memory access is "byte";
353   sign-extended before adding to "target".  */
354#define CRIS_DIS_FLAG_MEM_TARGET2_MEM_BYTE (1 << 6)
355
356/* Add-on to CRIS_DIS_FLAG_MEM_TARGET2_MEM; the memory access is "word";
357   sign-extended before adding to "target".  */
358#define CRIS_DIS_FLAG_MEM_TARGET2_MEM_WORD (1 << 7)
359
360#endif /* __CRIS_H_INCLUDED_ */
361
362/*
363 * Local variables:
364 * eval: (c-set-style "gnu")
365 * indent-tabs-mode: t
366 * End:
367 */
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