1 /* ppc-dis.c -- Disassemble PowerPC instructions
2 Copyright 1994, 1995, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
3 2008, 2009, 2010 Free Software Foundation, Inc.
4 Written by Ian Lance Taylor, Cygnus Support
6 This file is part of the GNU opcodes library.
8 This library is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
13 It is distributed in the hope that it will be useful, but WITHOUT
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
16 License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this file; see the file COPYING. If not, write to the
20 Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
27 #include "opcode/ppc.h"
29 /* This file provides several disassembler functions, all of which use
30 the disassembler interface defined in dis-asm.h. Several functions
31 are provided because this file handles disassembly for the PowerPC
32 in both big and little endian mode and also for the POWER (RS/6000)
34 static int print_insn_powerpc (bfd_vma, struct disassemble_info *, int,
39 /* Stash the result of parsing disassembler_options here. */
43 #define POWERPC_DIALECT(INFO) \
44 (((struct dis_private *) ((INFO)->private_data))->dialect)
52 struct ppc_mopt ppc_opts[] = {
53 { "403", (PPC_OPCODE_PPC | PPC_OPCODE_403),
55 { "405", (PPC_OPCODE_PPC | PPC_OPCODE_403 | PPC_OPCODE_405),
57 { "440", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_440
58 | PPC_OPCODE_ISEL | PPC_OPCODE_RFMCI),
60 { "464", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_440
61 | PPC_OPCODE_ISEL | PPC_OPCODE_RFMCI),
63 { "476", (PPC_OPCODE_PPC | PPC_OPCODE_ISEL | PPC_OPCODE_440
64 | PPC_OPCODE_476 | PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5),
66 { "601", (PPC_OPCODE_PPC | PPC_OPCODE_601),
68 { "603", (PPC_OPCODE_PPC),
70 { "604", (PPC_OPCODE_PPC),
72 { "620", (PPC_OPCODE_PPC | PPC_OPCODE_64),
74 { "7400", (PPC_OPCODE_PPC | PPC_OPCODE_ALTIVEC),
76 { "7410", (PPC_OPCODE_PPC | PPC_OPCODE_ALTIVEC),
78 { "7450", (PPC_OPCODE_PPC | PPC_OPCODE_ALTIVEC),
80 { "7455", (PPC_OPCODE_PPC | PPC_OPCODE_ALTIVEC),
82 { "750cl", (PPC_OPCODE_PPC | PPC_OPCODE_PPCPS)
84 { "a2", (PPC_OPCODE_PPC | PPC_OPCODE_ISEL | PPC_OPCODE_POWER4
85 | PPC_OPCODE_POWER5 | PPC_OPCODE_CACHELCK | PPC_OPCODE_64
88 { "altivec", (PPC_OPCODE_PPC),
92 { "booke", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE),
94 { "booke32", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE),
96 { "cell", (PPC_OPCODE_PPC | PPC_OPCODE_64 | PPC_OPCODE_POWER4
97 | PPC_OPCODE_CELL | PPC_OPCODE_ALTIVEC),
99 { "com", (PPC_OPCODE_COMMON),
101 { "e300", (PPC_OPCODE_PPC | PPC_OPCODE_E300),
103 { "e500", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_SPE
104 | PPC_OPCODE_ISEL | PPC_OPCODE_EFS | PPC_OPCODE_BRLOCK
105 | PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK | PPC_OPCODE_RFMCI
108 { "e500mc", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_ISEL
109 | PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK | PPC_OPCODE_RFMCI
110 | PPC_OPCODE_E500MC),
112 { "e500mc64", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_ISEL
113 | PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK | PPC_OPCODE_RFMCI
114 | PPC_OPCODE_E500MC | PPC_OPCODE_64 | PPC_OPCODE_POWER5
115 | PPC_OPCODE_POWER6 | PPC_OPCODE_POWER7),
117 { "e500x2", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_SPE
118 | PPC_OPCODE_ISEL | PPC_OPCODE_EFS | PPC_OPCODE_BRLOCK
119 | PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK | PPC_OPCODE_RFMCI
122 { "efs", (PPC_OPCODE_PPC | PPC_OPCODE_EFS),
124 { "power4", (PPC_OPCODE_PPC | PPC_OPCODE_64 | PPC_OPCODE_POWER4),
126 { "power5", (PPC_OPCODE_PPC | PPC_OPCODE_64 | PPC_OPCODE_POWER4
127 | PPC_OPCODE_POWER5),
129 { "power6", (PPC_OPCODE_PPC | PPC_OPCODE_64 | PPC_OPCODE_POWER4
130 | PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6 | PPC_OPCODE_ALTIVEC),
132 { "power7", (PPC_OPCODE_PPC | PPC_OPCODE_ISEL | PPC_OPCODE_64
133 | PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6
134 | PPC_OPCODE_POWER7 | PPC_OPCODE_ALTIVEC | PPC_OPCODE_VSX),
136 { "ppc", (PPC_OPCODE_PPC),
138 { "ppc32", (PPC_OPCODE_PPC),
140 { "ppc64", (PPC_OPCODE_PPC | PPC_OPCODE_64),
142 { "ppc64bridge", (PPC_OPCODE_PPC | PPC_OPCODE_64_BRIDGE),
144 { "ppcps", (PPC_OPCODE_PPC | PPC_OPCODE_PPCPS),
146 { "pwr", (PPC_OPCODE_POWER),
148 { "pwr2", (PPC_OPCODE_POWER | PPC_OPCODE_POWER2),
150 { "pwr4", (PPC_OPCODE_PPC | PPC_OPCODE_64 | PPC_OPCODE_POWER4),
152 { "pwr5", (PPC_OPCODE_PPC | PPC_OPCODE_64 | PPC_OPCODE_POWER4
153 | PPC_OPCODE_POWER5),
155 { "pwr5x", (PPC_OPCODE_PPC | PPC_OPCODE_64 | PPC_OPCODE_POWER4
156 | PPC_OPCODE_POWER5),
158 { "pwr6", (PPC_OPCODE_PPC | PPC_OPCODE_64 | PPC_OPCODE_POWER4
159 | PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6 | PPC_OPCODE_ALTIVEC),
161 { "pwr7", (PPC_OPCODE_PPC | PPC_OPCODE_ISEL | PPC_OPCODE_64
162 | PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6
163 | PPC_OPCODE_POWER7 | PPC_OPCODE_ALTIVEC | PPC_OPCODE_VSX),
165 { "pwrx", (PPC_OPCODE_POWER | PPC_OPCODE_POWER2),
167 { "spe", (PPC_OPCODE_PPC | PPC_OPCODE_EFS),
169 { "titan", (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_PMR
170 | PPC_OPCODE_RFMCI | PPC_OPCODE_TITAN),
172 { "vsx", (PPC_OPCODE_PPC),
176 /* Handle -m and -M options that set cpu type, and .machine arg. */
179 ppc_parse_cpu (ppc_cpu_t ppc_cpu, const char *arg)
182 ppc_cpu_t retain_flags = ppc_cpu & (PPC_OPCODE_ALTIVEC | PPC_OPCODE_VSX
183 | PPC_OPCODE_SPE | PPC_OPCODE_ANY);
186 for (i = 0; i < sizeof (ppc_opts) / sizeof (ppc_opts[0]); i++)
187 if (strcmp (ppc_opts[i].opt, arg) == 0)
189 if (ppc_opts[i].sticky)
191 retain_flags |= ppc_opts[i].sticky;
192 if ((ppc_cpu & ~(ppc_cpu_t) (PPC_OPCODE_ALTIVEC | PPC_OPCODE_VSX
193 | PPC_OPCODE_SPE | PPC_OPCODE_ANY)) != 0)
196 ppc_cpu = ppc_opts[i].cpu;
199 if (i >= sizeof (ppc_opts) / sizeof (ppc_opts[0]))
202 ppc_cpu |= retain_flags;
206 /* Determine which set of machines to disassemble for. */
209 powerpc_init_dialect (struct disassemble_info *info)
211 ppc_cpu_t dialect = 0;
213 struct dis_private *priv = calloc (sizeof (*priv), 1);
218 arg = info->disassembler_options;
221 ppc_cpu_t new_cpu = 0;
222 char *end = strchr (arg, ',');
227 if ((new_cpu = ppc_parse_cpu (dialect, arg)) != 0)
229 else if (strcmp (arg, "32") == 0)
230 dialect &= ~(ppc_cpu_t) PPC_OPCODE_64;
231 else if (strcmp (arg, "64") == 0)
232 dialect |= PPC_OPCODE_64;
234 fprintf (stderr, _("warning: ignoring unknown -M%s option\n"), arg);
241 if ((dialect & ~(ppc_cpu_t) PPC_OPCODE_64) == 0)
243 if (info->mach == bfd_mach_ppc64)
244 dialect |= PPC_OPCODE_64;
246 dialect &= ~(ppc_cpu_t) PPC_OPCODE_64;
247 /* Choose a reasonable default. */
248 dialect |= (PPC_OPCODE_PPC | PPC_OPCODE_COMMON | PPC_OPCODE_601
249 | PPC_OPCODE_ALTIVEC);
252 info->private_data = priv;
253 POWERPC_DIALECT(info) = dialect;
258 /* Print a big endian PowerPC instruction. */
261 print_insn_big_powerpc (bfd_vma memaddr, struct disassemble_info *info)
263 if (info->private_data == NULL && !powerpc_init_dialect (info))
265 return print_insn_powerpc (memaddr, info, 1, POWERPC_DIALECT(info));
268 /* Print a little endian PowerPC instruction. */
271 print_insn_little_powerpc (bfd_vma memaddr, struct disassemble_info *info)
273 if (info->private_data == NULL && !powerpc_init_dialect (info))
275 return print_insn_powerpc (memaddr, info, 0, POWERPC_DIALECT(info));
278 /* Print a POWER (RS/6000) instruction. */
281 print_insn_rs6000 (bfd_vma memaddr, struct disassemble_info *info)
283 return print_insn_powerpc (memaddr, info, 1, PPC_OPCODE_POWER);
286 /* Extract the operand value from the PowerPC or POWER instruction. */
289 operand_value_powerpc (const struct powerpc_operand *operand,
290 unsigned long insn, ppc_cpu_t dialect)
294 /* Extract the value from the instruction. */
295 if (operand->extract)
296 value = (*operand->extract) (insn, dialect, &invalid);
299 value = (insn >> operand->shift) & operand->bitm;
300 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
302 /* BITM is always some number of zeros followed by some
303 number of ones, followed by some numer of zeros. */
304 unsigned long top = operand->bitm;
305 /* top & -top gives the rightmost 1 bit, so this
306 fills in any trailing zeros. */
307 top |= (top & -top) - 1;
309 value = (value ^ top) - top;
316 /* Determine whether the optional operand(s) should be printed. */
319 skip_optional_operands (const unsigned char *opindex,
320 unsigned long insn, ppc_cpu_t dialect)
322 const struct powerpc_operand *operand;
324 for (; *opindex != 0; opindex++)
326 operand = &powerpc_operands[*opindex];
327 if ((operand->flags & PPC_OPERAND_NEXT) != 0
328 || ((operand->flags & PPC_OPERAND_OPTIONAL) != 0
329 && operand_value_powerpc (operand, insn, dialect) != 0))
336 /* Print a PowerPC or POWER instruction. */
339 print_insn_powerpc (bfd_vma memaddr,
340 struct disassemble_info *info,
347 const struct powerpc_opcode *opcode;
348 const struct powerpc_opcode *opcode_end;
350 ppc_cpu_t dialect_orig = dialect;
352 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
355 (*info->memory_error_func) (status, memaddr, info);
360 insn = bfd_getb32 (buffer);
362 insn = bfd_getl32 (buffer);
364 /* Get the major opcode of the instruction. */
367 /* Find the first match in the opcode table. We could speed this up
368 a bit by doing a binary search on the major opcode. */
369 opcode_end = powerpc_opcodes + powerpc_num_opcodes;
371 for (opcode = powerpc_opcodes; opcode < opcode_end; opcode++)
373 unsigned long table_op;
374 const unsigned char *opindex;
375 const struct powerpc_operand *operand;
381 table_op = PPC_OP (opcode->opcode);
387 if ((insn & opcode->mask) != opcode->opcode
388 || (opcode->flags & dialect) == 0
389 || (opcode->deprecated & dialect_orig) != 0)
392 /* Make two passes over the operands. First see if any of them
393 have extraction functions, and, if they do, make sure the
394 instruction is valid. */
396 for (opindex = opcode->operands; *opindex != 0; opindex++)
398 operand = powerpc_operands + *opindex;
399 if (operand->extract)
400 (*operand->extract) (insn, dialect, &invalid);
405 /* The instruction is valid. */
406 if (opcode->operands[0] != 0)
407 (*info->fprintf_func) (info->stream, "%-7s ", opcode->name);
409 (*info->fprintf_func) (info->stream, "%s", opcode->name);
411 /* Now extract and print the operands. */
415 for (opindex = opcode->operands; *opindex != 0; opindex++)
419 operand = powerpc_operands + *opindex;
421 /* Operands that are marked FAKE are simply ignored. We
422 already made sure that the extract function considered
423 the instruction to be valid. */
424 if ((operand->flags & PPC_OPERAND_FAKE) != 0)
427 /* If all of the optional operands have the value zero,
428 then don't print any of them. */
429 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0)
431 if (skip_optional < 0)
432 skip_optional = skip_optional_operands (opindex, insn,
438 value = operand_value_powerpc (operand, insn, dialect);
442 (*info->fprintf_func) (info->stream, ",");
446 /* Print the operand as directed by the flags. */
447 if ((operand->flags & PPC_OPERAND_GPR) != 0
448 || ((operand->flags & PPC_OPERAND_GPR_0) != 0 && value != 0))
449 (*info->fprintf_func) (info->stream, "r%ld", value);
450 else if ((operand->flags & PPC_OPERAND_FPR) != 0)
451 (*info->fprintf_func) (info->stream, "f%ld", value);
452 else if ((operand->flags & PPC_OPERAND_VR) != 0)
453 (*info->fprintf_func) (info->stream, "v%ld", value);
454 else if ((operand->flags & PPC_OPERAND_VSR) != 0)
455 (*info->fprintf_func) (info->stream, "vs%ld", value);
456 else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0)
457 (*info->print_address_func) (memaddr + value, info);
458 else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0)
459 (*info->print_address_func) ((bfd_vma) value & 0xffffffff, info);
460 else if ((operand->flags & PPC_OPERAND_FSL) != 0)
461 (*info->fprintf_func) (info->stream, "fsl%ld", value);
462 else if ((operand->flags & PPC_OPERAND_FCR) != 0)
463 (*info->fprintf_func) (info->stream, "fcr%ld", value);
464 else if ((operand->flags & PPC_OPERAND_UDI) != 0)
465 (*info->fprintf_func) (info->stream, "%ld", value);
466 else if ((operand->flags & PPC_OPERAND_CR) != 0
467 && (dialect & PPC_OPCODE_PPC) != 0)
469 if (operand->bitm == 7)
470 (*info->fprintf_func) (info->stream, "cr%ld", value);
473 static const char *cbnames[4] = { "lt", "gt", "eq", "so" };
479 (*info->fprintf_func) (info->stream, "4*cr%d+", cr);
481 (*info->fprintf_func) (info->stream, "%s", cbnames[cc]);
485 (*info->fprintf_func) (info->stream, "%ld", value);
489 (*info->fprintf_func) (info->stream, ")");
493 if ((operand->flags & PPC_OPERAND_PARENS) == 0)
497 (*info->fprintf_func) (info->stream, "(");
502 /* We have found and printed an instruction; return. */
506 if ((dialect & PPC_OPCODE_ANY) != 0)
508 dialect = ~(ppc_cpu_t) PPC_OPCODE_ANY;
512 /* We could not find a match. */
513 (*info->fprintf_func) (info->stream, ".long 0x%lx", insn);
519 print_ppc_disassembler_options (FILE *stream)
523 fprintf (stream, _("\n\
524 The following PPC specific disassembler options are supported for use with\n\
527 for (col = 0, i = 0; i < sizeof (ppc_opts) / sizeof (ppc_opts[0]); i++)
529 col += fprintf (stream, " %s,", ppc_opts[i].opt);
532 fprintf (stream, "\n");
536 fprintf (stream, " 32, 64\n");