1 /* Instruction printing code for the ARC.
2 Copyright (C) 1994-2017 Free Software Foundation, Inc.
4 Contributed by Claudiu Zissulescu (claziss@synopsys.com)
6 This file is part of libopcodes.
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 program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
27 #include "opcode/arc.h"
32 #include "libiberty.h"
35 /* Structure used to iterate over, and extract the values for, operands of
38 struct arc_operand_iterator
40 /* The complete instruction value to extract operands from. */
41 unsigned long long insn;
43 /* The LIMM if this is being tracked separately. This field is only
44 valid if we find the LIMM operand in the operand list. */
47 /* The opcode this iterator is operating on. */
48 const struct arc_opcode *opcode;
50 /* The index into the opcodes operand index list. */
51 const unsigned char *opidx;
54 /* A private data used by ARC decoder. */
55 struct arc_disassemble_info
57 /* The current disassembled arc opcode. */
58 const struct arc_opcode *opcode;
60 /* Instruction length w/o limm field. */
63 /* TRUE if we have limm. */
66 /* LIMM value, if exists. */
69 /* Condition code, if exists. */
70 unsigned condition_code;
73 unsigned writeback_mode;
75 /* Number of operands. */
76 unsigned operands_count;
78 struct arc_insn_operand operands[MAX_INSN_ARGS];
81 /* Globals variables. */
83 static const char * const regnames[64] =
85 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
86 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
87 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
88 "r24", "r25", "gp", "fp", "sp", "ilink", "r30", "blink",
90 "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39",
91 "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47",
92 "r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55",
93 "r56", "r57", "ACCL", "ACCH", "lp_count", "rezerved", "LIMM", "pcl"
96 static const char * const addrtypenames[ARC_NUM_ADDRTYPES] =
98 "bd", "jid", "lbd", "mbd", "sd", "sm", "xa", "xd",
99 "cd", "cbd", "cjid", "clbd", "cm", "csd", "cxa", "cxd"
102 static int addrtypenames_max = ARC_NUM_ADDRTYPES - 1;
104 static const char * const addrtypeunknown = "unknown";
106 /* This structure keeps track which instruction class(es)
107 should be ignored durring disassembling. */
109 typedef struct skipclass
111 insn_class_t insn_class;
112 insn_subclass_t subclass;
113 struct skipclass *nxt;
114 } skipclass_t, *linkclass;
116 /* Intial classes of instructions to be consider first when
118 static linkclass decodelist = NULL;
120 /* ISA mask value enforced via disassembler info options. ARC_OPCODE_NONE
121 value means that no CPU is enforced. */
123 static unsigned enforced_isa_mask = ARC_OPCODE_NONE;
125 /* Macros section. */
128 # define pr_debug(fmt, args...) fprintf (stderr, fmt, ##args)
130 # define pr_debug(fmt, args...)
133 #define ARRANGE_ENDIAN(info, buf) \
134 (info->endian == BFD_ENDIAN_LITTLE ? bfd_getm32 (bfd_getl32 (buf)) \
137 #define BITS(word,s,e) (((word) << (sizeof (word) * 8 - 1 - e)) >> \
138 (s + (sizeof (word) * 8 - 1 - e)))
139 #define OPCODE_32BIT_INSN(word) (BITS ((word), 27, 31))
141 /* Functions implementation. */
143 /* Initialize private data. */
145 init_arc_disasm_info (struct disassemble_info *info)
147 struct arc_disassemble_info *arc_infop
148 = calloc (sizeof (*arc_infop), 1);
150 if (arc_infop == NULL)
153 info->private_data = arc_infop;
157 /* Add a new element to the decode list. */
160 add_to_decodelist (insn_class_t insn_class,
161 insn_subclass_t subclass)
163 linkclass t = (linkclass) xmalloc (sizeof (skipclass_t));
165 t->insn_class = insn_class;
166 t->subclass = subclass;
171 /* Return TRUE if we need to skip the opcode from being
175 skip_this_opcode (const struct arc_opcode *opcode)
177 linkclass t = decodelist;
179 /* Check opcode for major 0x06, return if it is not in. */
180 if (arc_opcode_len (opcode) == 4
181 && OPCODE_32BIT_INSN (opcode->opcode) != 0x06)
184 /* or not a known truble class. */
185 switch (opcode->insn_class)
196 if ((t->insn_class == opcode->insn_class)
197 && (t->subclass == opcode->subclass))
206 bfd_getm32 (unsigned int data)
210 value = ((data & 0xff00) | (data & 0xff)) << 16;
211 value |= ((data & 0xff0000) | (data & 0xff000000)) >> 16;
216 special_flag_p (const char *opname,
219 const struct arc_flag_special *flg_spec;
220 unsigned i, j, flgidx;
222 for (i = 0; i < arc_num_flag_special; i++)
224 flg_spec = &arc_flag_special_cases[i];
226 if (strcmp (opname, flg_spec->name))
229 /* Found potential special case instruction. */
232 flgidx = flg_spec->flags[j];
234 break; /* End of the array. */
236 if (strcmp (flgname, arc_flag_operands[flgidx].name) == 0)
243 /* Find opcode from ARC_TABLE given the instruction described by INSN and
244 INSNLEN. The ISA_MASK restricts the possible matches in ARC_TABLE. */
246 static const struct arc_opcode *
247 find_format_from_table (struct disassemble_info *info,
248 const struct arc_opcode *arc_table,
249 unsigned long long insn,
250 unsigned int insn_len,
252 bfd_boolean *has_limm,
253 bfd_boolean overlaps)
256 const struct arc_opcode *opcode = NULL;
257 const struct arc_opcode *t_op = NULL;
258 const unsigned char *opidx;
259 const unsigned char *flgidx;
260 bfd_boolean warn_p = FALSE;
264 bfd_boolean invalid = FALSE;
266 opcode = &arc_table[i++];
268 if (!(opcode->cpu & isa_mask))
271 if (arc_opcode_len (opcode) != (int) insn_len)
274 if ((insn & opcode->mask) != opcode->opcode)
279 /* Possible candidate, check the operands. */
280 for (opidx = opcode->operands; *opidx; opidx++)
283 const struct arc_operand *operand = &arc_operands[*opidx];
285 if (operand->flags & ARC_OPERAND_FAKE)
288 if (operand->extract)
289 value = (*operand->extract) (insn, &invalid);
291 value = (insn >> operand->shift) & ((1 << operand->bits) - 1);
293 /* Check for LIMM indicator. If it is there, then make sure
294 we pick the right format. */
295 limmind = (isa_mask & ARC_OPCODE_ARCV2) ? 0x1E : 0x3E;
296 if (operand->flags & ARC_OPERAND_IR
297 && !(operand->flags & ARC_OPERAND_LIMM))
299 if ((value == 0x3E && insn_len == 4)
300 || (value == limmind && insn_len == 2))
307 if (operand->flags & ARC_OPERAND_LIMM
308 && !(operand->flags & ARC_OPERAND_DUPLICATE))
312 /* Check the flags. */
313 for (flgidx = opcode->flags; *flgidx; flgidx++)
315 /* Get a valid flag class. */
316 const struct arc_flag_class *cl_flags = &arc_flag_classes[*flgidx];
317 const unsigned *flgopridx;
318 int foundA = 0, foundB = 0;
321 /* Check first the extensions. */
322 if (cl_flags->flag_class & F_CLASS_EXTEND)
324 value = (insn & 0x1F);
325 if (arcExtMap_condCodeName (value))
329 /* Check for the implicit flags. */
330 if (cl_flags->flag_class & F_CLASS_IMPLICIT)
333 for (flgopridx = cl_flags->flags; *flgopridx; ++flgopridx)
335 const struct arc_flag_operand *flg_operand =
336 &arc_flag_operands[*flgopridx];
338 value = (insn >> flg_operand->shift)
339 & ((1 << flg_operand->bits) - 1);
340 if (value == flg_operand->code)
346 if (!foundA && foundB)
361 if (skip_this_opcode (opcode))
365 /* The instruction is valid. */
368 while (opcode->mask);
372 info->fprintf_func (info->stream,
373 _("\nWarning: disassembly may be wrong due to "
374 "guessed opcode class choice.\n"
375 "Use -M<class[,class]> to select the correct "
376 "opcode class(es).\n\t\t\t\t"));
383 /* Find opcode for INSN, trying various different sources. The instruction
384 length in INSN_LEN will be updated if the instruction requires a LIMM
387 A pointer to the opcode is placed into OPCODE_RESULT, and ITER is
388 initialised, ready to iterate over the operands of the found opcode. If
389 the found opcode requires a LIMM then the LIMM value will be loaded into a
392 This function returns TRUE in almost all cases, FALSE is reserved to
393 indicate an error (failing to find an opcode is not an error) a returned
394 result of FALSE would indicate that the disassembler can't continue.
396 If no matching opcode is found then the returned result will be TRUE, the
397 value placed into OPCODE_RESULT will be NULL, ITER will be undefined, and
398 INSN_LEN will be unchanged.
400 If a matching opcode is found, then the returned result will be TRUE, the
401 opcode pointer is placed into OPCODE_RESULT, INSN_LEN will be increased by
402 4 if the instruction requires a LIMM, and the LIMM value will have been
403 loaded into a field of ITER. Finally, ITER will have been initialised so
404 that calls to OPERAND_ITERATOR_NEXT will iterate over the opcode's
408 find_format (bfd_vma memaddr,
409 unsigned long long insn,
410 unsigned int * insn_len,
412 struct disassemble_info * info,
413 const struct arc_opcode ** opcode_result,
414 struct arc_operand_iterator * iter)
416 const struct arc_opcode *opcode = NULL;
417 bfd_boolean needs_limm;
418 const extInstruction_t *einsn, *i;
420 struct arc_disassemble_info *arc_infop = info->private_data;
422 /* First, try the extension instructions. */
425 einsn = arcExtMap_insn (OPCODE_32BIT_INSN (insn), insn);
426 for (i = einsn; (i != NULL) && (opcode == NULL); i = i->next)
428 const char *errmsg = NULL;
430 opcode = arcExtMap_genOpcode (i, isa_mask, &errmsg);
433 (*info->fprintf_func) (info->stream, "\
434 An error occured while generating the extension instruction operations");
435 *opcode_result = NULL;
439 opcode = find_format_from_table (info, opcode, insn, *insn_len,
440 isa_mask, &needs_limm, FALSE);
444 /* Then, try finding the first match in the opcode table. */
446 opcode = find_format_from_table (info, arc_opcodes, insn, *insn_len,
447 isa_mask, &needs_limm, TRUE);
449 if (needs_limm && opcode != NULL)
454 status = (*info->read_memory_func) (memaddr + *insn_len, buffer,
462 limm = ARRANGE_ENDIAN (info, buffer);
471 iter->opcode = opcode;
472 iter->opidx = opcode->operands;
475 *opcode_result = opcode;
477 /* Update private data. */
478 arc_infop->opcode = opcode;
479 arc_infop->limm = (needs_limm) ? limm : 0;
480 arc_infop->limm_p = needs_limm;
486 print_flags (const struct arc_opcode *opcode,
487 unsigned long long *insn,
488 struct disassemble_info *info)
490 const unsigned char *flgidx;
492 struct arc_disassemble_info *arc_infop = info->private_data;
494 /* Now extract and print the flags. */
495 for (flgidx = opcode->flags; *flgidx; flgidx++)
497 /* Get a valid flag class. */
498 const struct arc_flag_class *cl_flags = &arc_flag_classes[*flgidx];
499 const unsigned *flgopridx;
501 /* Check first the extensions. */
502 if (cl_flags->flag_class & F_CLASS_EXTEND)
505 value = (insn[0] & 0x1F);
507 name = arcExtMap_condCodeName (value);
510 (*info->fprintf_func) (info->stream, ".%s", name);
515 for (flgopridx = cl_flags->flags; *flgopridx; ++flgopridx)
517 const struct arc_flag_operand *flg_operand =
518 &arc_flag_operands[*flgopridx];
520 /* Implicit flags are only used for the insn decoder. */
521 if (cl_flags->flag_class & F_CLASS_IMPLICIT)
523 if (cl_flags->flag_class & F_CLASS_COND)
524 arc_infop->condition_code = flg_operand->code;
525 else if (cl_flags->flag_class & F_CLASS_WB)
526 arc_infop->writeback_mode = flg_operand->code;
527 else if (cl_flags->flag_class & F_CLASS_ZZ)
528 info->data_size = flg_operand->code;
532 if (!flg_operand->favail)
535 value = (insn[0] >> flg_operand->shift)
536 & ((1 << flg_operand->bits) - 1);
537 if (value == flg_operand->code)
539 /* FIXME!: print correctly nt/t flag. */
540 if (!special_flag_p (opcode->name, flg_operand->name))
541 (*info->fprintf_func) (info->stream, ".");
542 else if (info->insn_type == dis_dref)
544 switch (flg_operand->name[0])
558 if (flg_operand->name[0] == 'd'
559 && flg_operand->name[1] == 0)
560 info->branch_delay_insns = 1;
562 /* Check if it is a conditional flag. */
563 if (cl_flags->flag_class & F_CLASS_COND)
565 if (info->insn_type == dis_jsr)
566 info->insn_type = dis_condjsr;
567 else if (info->insn_type == dis_branch)
568 info->insn_type = dis_condbranch;
569 arc_infop->condition_code = flg_operand->code;
572 /* Check for the write back modes. */
573 if (cl_flags->flag_class & F_CLASS_WB)
574 arc_infop->writeback_mode = flg_operand->code;
576 (*info->fprintf_func) (info->stream, "%s", flg_operand->name);
583 get_auxreg (const struct arc_opcode *opcode,
589 const struct arc_aux_reg *auxr = &arc_aux_regs[0];
591 if (opcode->insn_class != AUXREG)
594 name = arcExtMap_auxRegName (value);
598 for (i = 0; i < arc_num_aux_regs; i++, auxr++)
600 if (!(auxr->cpu & isa_mask))
603 if (auxr->subclass != NONE)
606 if (auxr->address == value)
612 /* Convert a value representing an address type to a string used to refer to
613 the address type in assembly code. */
616 get_addrtype (int value)
618 if (value < 0 || value > addrtypenames_max)
619 return addrtypeunknown;
621 return addrtypenames[value];
624 /* Calculate the instruction length for an instruction starting with MSB
625 and LSB, the most and least significant byte. The ISA_MASK is used to
626 filter the instructions considered to only those that are part of the
627 current architecture.
629 The instruction lengths are calculated from the ARC_OPCODE table, and
630 cached for later use. */
633 arc_insn_length (bfd_byte msb, bfd_byte lsb, struct disassemble_info *info)
635 bfd_byte major_opcode = msb >> 3;
639 case bfd_mach_arc_arc700:
640 /* The nps400 extension set requires this special casing of the
641 instruction length calculation. Right now this is not causing any
642 problems as none of the known extensions overlap in opcode space,
643 but, if they ever do then we might need to start carrying
644 information around in the elf about which extensions are in use. */
645 if (major_opcode == 0xb)
647 bfd_byte minor_opcode = lsb & 0x1f;
649 if (minor_opcode < 4)
651 else if (minor_opcode == 0x10 || minor_opcode == 0x11)
654 if (major_opcode == 0xa)
659 case bfd_mach_arc_arc600:
660 return (major_opcode > 0xb) ? 2 : 4;
663 case bfd_mach_arc_arcv2:
664 return (major_opcode > 0x7) ? 2 : 4;
672 /* Extract and return the value of OPERAND from the instruction whose value
673 is held in the array INSN. */
676 extract_operand_value (const struct arc_operand *operand,
677 unsigned long long insn,
682 /* Read the limm operand, if required. */
683 if (operand->flags & ARC_OPERAND_LIMM)
684 /* The second part of the instruction value will have been loaded as
685 part of the find_format call made earlier. */
689 if (operand->extract)
690 value = (*operand->extract) (insn, (int *) NULL);
693 if (operand->flags & ARC_OPERAND_ALIGNED32)
695 value = (insn >> operand->shift)
696 & ((1 << (operand->bits - 2)) - 1);
701 value = (insn >> operand->shift) & ((1 << operand->bits) - 1);
703 if (operand->flags & ARC_OPERAND_SIGNED)
705 int signbit = 1 << (operand->bits - 1);
706 value = (value ^ signbit) - signbit;
714 /* Find the next operand, and the operands value from ITER. Return TRUE if
715 there is another operand, otherwise return FALSE. If there is an
716 operand returned then the operand is placed into OPERAND, and the value
717 into VALUE. If there is no operand returned then OPERAND and VALUE are
721 operand_iterator_next (struct arc_operand_iterator *iter,
722 const struct arc_operand **operand,
725 if (*iter->opidx == 0)
731 *operand = &arc_operands[*iter->opidx];
732 *value = extract_operand_value (*operand, iter->insn, iter->limm);
738 /* Helper for parsing the options. */
741 parse_option (const char *option)
743 if (disassembler_options_cmp (option, "dsp") == 0)
744 add_to_decodelist (DSP, NONE);
746 else if (disassembler_options_cmp (option, "spfp") == 0)
747 add_to_decodelist (FLOAT, SPX);
749 else if (disassembler_options_cmp (option, "dpfp") == 0)
750 add_to_decodelist (FLOAT, DPX);
752 else if (disassembler_options_cmp (option, "quarkse_em") == 0)
754 add_to_decodelist (FLOAT, DPX);
755 add_to_decodelist (FLOAT, SPX);
756 add_to_decodelist (FLOAT, QUARKSE1);
757 add_to_decodelist (FLOAT, QUARKSE2);
760 else if (disassembler_options_cmp (option, "fpuda") == 0)
761 add_to_decodelist (FLOAT, DPA);
763 else if (disassembler_options_cmp (option, "fpus") == 0)
765 add_to_decodelist (FLOAT, SP);
766 add_to_decodelist (FLOAT, CVT);
769 else if (disassembler_options_cmp (option, "fpud") == 0)
771 add_to_decodelist (FLOAT, DP);
772 add_to_decodelist (FLOAT, CVT);
775 fprintf (stderr, _("Unrecognised disassembler option: %s\n"), option);
778 #define ARC_CPU_TYPE_A6xx(NAME,EXTRA) \
779 { #NAME, ARC_OPCODE_ARC600, "ARC600" }
780 #define ARC_CPU_TYPE_A7xx(NAME,EXTRA) \
781 { #NAME, ARC_OPCODE_ARC700, "ARC700" }
782 #define ARC_CPU_TYPE_AV2EM(NAME,EXTRA) \
783 { #NAME, ARC_OPCODE_ARCv2EM, "ARC EM" }
784 #define ARC_CPU_TYPE_AV2HS(NAME,EXTRA) \
785 { #NAME, ARC_OPCODE_ARCv2HS, "ARC HS" }
786 #define ARC_CPU_TYPE_NONE \
789 /* A table of CPU names and opcode sets. */
790 static const struct cpu_type
798 #include "elf/arc-cpu.def"
801 /* Helper for parsing the CPU options. Accept any of the ARC architectures
802 values. OPTION should be a value passed to cpu=. */
805 parse_cpu_option (const char *option)
809 for (i = 0; cpu_types[i].name; ++i)
811 if (!disassembler_options_cmp (cpu_types[i].name, option))
813 return cpu_types[i].flags;
817 fprintf (stderr, _("Unrecognised disassembler CPU option: %s\n"), option);
818 return ARC_OPCODE_NONE;
821 /* Go over the options list and parse it. */
824 parse_disassembler_options (const char *options)
831 /* Disassembler might be reused for difference CPU's, and cpu option set for
832 the first one shouldn't be applied to second (which might not have
833 explicit cpu in its options. Therefore it is required to reset enforced
834 CPU when new options are being parsed. */
835 enforced_isa_mask = ARC_OPCODE_NONE;
837 FOR_EACH_DISASSEMBLER_OPTION (option, options)
839 /* A CPU option? Cannot use STRING_COMMA_LEN because strncmp is also a
840 preprocessor macro. */
841 if (strncmp (option, "cpu=", 4) == 0)
842 /* Strip leading `cpu=`. */
843 enforced_isa_mask = parse_cpu_option (option + 4);
845 parse_option (option);
849 /* Return the instruction type for an instruction described by OPCODE. */
851 static enum dis_insn_type
852 arc_opcode_to_insn_type (const struct arc_opcode *opcode)
854 enum dis_insn_type insn_type;
856 switch (opcode->insn_class)
868 if (!strncmp (opcode->name, "bl", 2)
869 || !strncmp (opcode->name, "jl", 2))
871 if (opcode->subclass == COND)
872 insn_type = dis_condjsr;
878 if (opcode->subclass == COND)
879 insn_type = dis_condbranch;
881 insn_type = dis_branch;
890 insn_type = dis_dref;
893 insn_type = dis_branch;
896 insn_type = dis_nonbranch;
903 /* Disassemble ARC instructions. */
906 print_insn_arc (bfd_vma memaddr,
907 struct disassemble_info *info)
910 unsigned int highbyte, lowbyte;
912 unsigned int insn_len;
913 unsigned long long insn = 0;
914 unsigned isa_mask = ARC_OPCODE_NONE;
915 const struct arc_opcode *opcode;
916 bfd_boolean need_comma;
917 bfd_boolean open_braket;
919 const struct arc_operand *operand;
921 struct arc_operand_iterator iter;
922 struct arc_disassemble_info *arc_infop;
924 if (info->disassembler_options)
926 parse_disassembler_options (info->disassembler_options);
928 /* Avoid repeated parsing of the options. */
929 info->disassembler_options = NULL;
932 if (info->private_data == NULL && !init_arc_disasm_info (info))
935 memset (&iter, 0, sizeof (iter));
936 highbyte = ((info->endian == BFD_ENDIAN_LITTLE) ? 1 : 0);
937 lowbyte = ((info->endian == BFD_ENDIAN_LITTLE) ? 0 : 1);
939 /* Figure out CPU type, unless it was enforced via disassembler options. */
940 if (enforced_isa_mask == ARC_OPCODE_NONE)
942 Elf_Internal_Ehdr *header = NULL;
944 if (info->section && info->section->owner)
945 header = elf_elfheader (info->section->owner);
949 case bfd_mach_arc_arc700:
950 isa_mask = ARC_OPCODE_ARC700;
953 case bfd_mach_arc_arc600:
954 isa_mask = ARC_OPCODE_ARC600;
957 case bfd_mach_arc_arcv2:
959 isa_mask = ARC_OPCODE_ARCv2EM;
960 /* TODO: Perhaps remove definition of header since it is only used at
963 && (header->e_flags & EF_ARC_MACH_MSK) == EF_ARC_CPU_ARCV2HS)
964 isa_mask = ARC_OPCODE_ARCv2HS;
969 isa_mask = enforced_isa_mask;
971 if (isa_mask == ARC_OPCODE_ARCv2HS)
973 /* FPU instructions are not extensions for HS. */
974 add_to_decodelist (FLOAT, SP);
975 add_to_decodelist (FLOAT, DP);
976 add_to_decodelist (FLOAT, CVT);
979 /* This variable may be set by the instruction decoder. It suggests
980 the number of bytes objdump should display on a single line. If
981 the instruction decoder sets this, it should always set it to
982 the same value in order to get reasonable looking output. */
984 info->bytes_per_line = 8;
986 /* In the next lines, we set two info variables control the way
987 objdump displays the raw data. For example, if bytes_per_line is
988 8 and bytes_per_chunk is 4, the output will look like this:
989 00: 00000000 00000000
990 with the chunks displayed according to "display_endian". */
993 && !(info->section->flags & SEC_CODE))
995 /* This is not a CODE section. */
996 switch (info->section->size)
1001 size = info->section->size;
1004 size = (info->section->size & 0x01) ? 1 : 4;
1007 info->bytes_per_chunk = 1;
1008 info->display_endian = info->endian;
1013 info->bytes_per_chunk = 2;
1014 info->display_endian = info->endian;
1017 /* Read the insn into a host word. */
1018 status = (*info->read_memory_func) (memaddr, buffer, size, info);
1021 (*info->memory_error_func) (status, memaddr, info);
1026 && !(info->section->flags & SEC_CODE))
1031 data = bfd_get_bits (buffer, size * 8,
1032 info->display_endian == BFD_ENDIAN_BIG);
1036 (*info->fprintf_func) (info->stream, ".byte\t0x%02lx", data);
1039 (*info->fprintf_func) (info->stream, ".short\t0x%04lx", data);
1042 (*info->fprintf_func) (info->stream, ".word\t0x%08lx", data);
1050 insn_len = arc_insn_length (buffer[highbyte], buffer[lowbyte], info);
1051 pr_debug ("instruction length = %d bytes\n", insn_len);
1052 arc_infop = info->private_data;
1053 arc_infop->insn_len = insn_len;
1058 insn = (buffer[highbyte] << 8) | buffer[lowbyte];
1063 /* This is a long instruction: Read the remaning 2 bytes. */
1064 status = (*info->read_memory_func) (memaddr + 2, &buffer[2], 2, info);
1067 (*info->memory_error_func) (status, memaddr + 2, info);
1070 insn = (unsigned long long) ARRANGE_ENDIAN (info, buffer);
1076 status = (*info->read_memory_func) (memaddr + 2, &buffer[2], 4, info);
1079 (*info->memory_error_func) (status, memaddr + 2, info);
1082 insn = (unsigned long long) ARRANGE_ENDIAN (info, &buffer[2]);
1083 insn |= ((unsigned long long) buffer[highbyte] << 40)
1084 | ((unsigned long long) buffer[lowbyte] << 32);
1090 status = (*info->read_memory_func) (memaddr + 2, &buffer[2], 6, info);
1093 (*info->memory_error_func) (status, memaddr + 2, info);
1097 ((((unsigned long long) ARRANGE_ENDIAN (info, buffer)) << 32)
1098 | ((unsigned long long) ARRANGE_ENDIAN (info, &buffer[4])));
1103 /* There is no instruction whose length is not 2, 4, 6, or 8. */
1107 pr_debug ("instruction value = %llx\n", insn);
1109 /* Set some defaults for the insn info. */
1110 info->insn_info_valid = 1;
1111 info->branch_delay_insns = 0;
1112 info->data_size = 4;
1113 info->insn_type = dis_nonbranch;
1117 /* FIXME to be moved in dissasemble_init_for_target. */
1118 info->disassembler_needs_relocs = TRUE;
1120 /* Find the first match in the opcode table. */
1121 if (!find_format (memaddr, insn, &insn_len, isa_mask, info, &opcode, &iter))
1129 (*info->fprintf_func) (info->stream, ".long %#04llx",
1133 (*info->fprintf_func) (info->stream, ".long %#08llx",
1137 (*info->fprintf_func) (info->stream, ".long %#08llx",
1139 (*info->fprintf_func) (info->stream, ".long %#04llx",
1140 (insn >> 32) & 0xffff);
1143 (*info->fprintf_func) (info->stream, ".long %#08llx",
1145 (*info->fprintf_func) (info->stream, ".long %#08llx",
1152 info->insn_type = dis_noninsn;
1156 /* Print the mnemonic. */
1157 (*info->fprintf_func) (info->stream, "%s", opcode->name);
1159 /* Preselect the insn class. */
1160 info->insn_type = arc_opcode_to_insn_type (opcode);
1162 pr_debug ("%s: 0x%08llx\n", opcode->name, opcode->opcode);
1164 print_flags (opcode, &insn, info);
1166 if (opcode->operands[0] != 0)
1167 (*info->fprintf_func) (info->stream, "\t");
1170 open_braket = FALSE;
1171 arc_infop->operands_count = 0;
1173 /* Now extract and print the operands. */
1175 while (operand_iterator_next (&iter, &operand, &value))
1177 if (open_braket && (operand->flags & ARC_OPERAND_BRAKET))
1179 (*info->fprintf_func) (info->stream, "]");
1180 open_braket = FALSE;
1184 /* Only take input from real operands. */
1185 if (ARC_OPERAND_IS_FAKE (operand))
1188 if ((operand->flags & ARC_OPERAND_IGNORE)
1189 && (operand->flags & ARC_OPERAND_IR)
1193 if (operand->flags & ARC_OPERAND_COLON)
1195 (*info->fprintf_func) (info->stream, ":");
1200 (*info->fprintf_func) (info->stream, ",");
1202 if (!open_braket && (operand->flags & ARC_OPERAND_BRAKET))
1204 (*info->fprintf_func) (info->stream, "[");
1212 /* Print the operand as directed by the flags. */
1213 if (operand->flags & ARC_OPERAND_IR)
1217 assert (value >=0 && value < 64);
1218 rname = arcExtMap_coreRegName (value);
1220 rname = regnames[value];
1221 (*info->fprintf_func) (info->stream, "%s", rname);
1222 if (operand->flags & ARC_OPERAND_TRUNCATE)
1224 rname = arcExtMap_coreRegName (value + 1);
1226 rname = regnames[value + 1];
1227 (*info->fprintf_func) (info->stream, "%s", rname);
1230 else if (operand->flags & ARC_OPERAND_LIMM)
1232 const char *rname = get_auxreg (opcode, value, isa_mask);
1234 if (rname && open_braket)
1235 (*info->fprintf_func) (info->stream, "%s", rname);
1238 (*info->fprintf_func) (info->stream, "%#x", value);
1239 if (info->insn_type == dis_branch
1240 || info->insn_type == dis_jsr)
1241 info->target = (bfd_vma) value;
1244 else if (operand->flags & ARC_OPERAND_PCREL)
1247 if (info->flags & INSN_HAS_RELOC)
1249 (*info->print_address_func) ((memaddr & ~3) + value, info);
1251 info->target = (bfd_vma) (memaddr & ~3) + value;
1253 else if (operand->flags & ARC_OPERAND_SIGNED)
1255 const char *rname = get_auxreg (opcode, value, isa_mask);
1256 if (rname && open_braket)
1257 (*info->fprintf_func) (info->stream, "%s", rname);
1259 (*info->fprintf_func) (info->stream, "%d", value);
1261 else if (operand->flags & ARC_OPERAND_ADDRTYPE)
1263 const char *addrtype = get_addrtype (value);
1264 (*info->fprintf_func) (info->stream, "%s", addrtype);
1265 /* A colon follow an address type. */
1270 if (operand->flags & ARC_OPERAND_TRUNCATE
1271 && !(operand->flags & ARC_OPERAND_ALIGNED32)
1272 && !(operand->flags & ARC_OPERAND_ALIGNED16)
1273 && value >= 0 && value <= 14)
1281 (*info->fprintf_func) (info->stream, "r13");
1284 (*info->fprintf_func) (info->stream, "r13-%s",
1285 regnames[13 + value - 1]);
1291 const char *rname = get_auxreg (opcode, value, isa_mask);
1292 if (rname && open_braket)
1293 (*info->fprintf_func) (info->stream, "%s", rname);
1295 (*info->fprintf_func) (info->stream, "%#x", value);
1299 if (operand->flags & ARC_OPERAND_LIMM)
1301 arc_infop->operands[arc_infop->operands_count].kind
1302 = ARC_OPERAND_KIND_LIMM;
1303 /* It is not important to have exactly the LIMM indicator
1305 arc_infop->operands[arc_infop->operands_count].value = 63;
1309 arc_infop->operands[arc_infop->operands_count].value = value;
1310 arc_infop->operands[arc_infop->operands_count].kind
1311 = (operand->flags & ARC_OPERAND_IR
1312 ? ARC_OPERAND_KIND_REG
1313 : ARC_OPERAND_KIND_SHIMM);
1315 arc_infop->operands_count ++;
1323 arc_get_disassembler (bfd *abfd)
1325 /* BFD my be absent, if opcodes is invoked from the debugger that
1326 has connected to remote target and doesn't have an ELF file. */
1329 /* Read the extension insns and registers, if any. */
1330 build_ARC_extmap (abfd);
1336 return print_insn_arc;
1340 print_arc_disassembler_options (FILE *stream)
1344 fprintf (stream, _("\n\
1345 The following ARC specific disassembler options are supported for use \n\
1346 with -M switch (multiple options should be separated by commas):\n"));
1348 /* cpu=... options. */
1349 for (i = 0; cpu_types[i].name; ++i)
1351 /* As of now all value CPU values are less than 16 characters. */
1352 fprintf (stream, " cpu=%-16s\tEnforce %s ISA.\n",
1353 cpu_types[i].name, cpu_types[i].isa);
1356 fprintf (stream, _("\
1357 dsp Recognize DSP instructions.\n"));
1358 fprintf (stream, _("\
1359 spfp Recognize FPX SP instructions.\n"));
1360 fprintf (stream, _("\
1361 dpfp Recognize FPX DP instructions.\n"));
1362 fprintf (stream, _("\
1363 quarkse_em Recognize FPU QuarkSE-EM instructions.\n"));
1364 fprintf (stream, _("\
1365 fpuda Recognize double assist FPU instructions.\n"));
1366 fprintf (stream, _("\
1367 fpus Recognize single precision FPU instructions.\n"));
1368 fprintf (stream, _("\
1369 fpud Recognize double precision FPU instructions.\n"));
1372 void arc_insn_decode (bfd_vma addr,
1373 struct disassemble_info *info,
1374 disassembler_ftype disasm_func,
1375 struct arc_instruction *insn)
1377 const struct arc_opcode *opcode;
1378 struct arc_disassemble_info *arc_infop;
1380 /* Ensure that insn would be in the reset state. */
1381 memset (insn, 0, sizeof (struct arc_instruction));
1383 /* There was an error when disassembling, for example memory read error. */
1384 if (disasm_func (addr, info) < 0)
1386 insn->valid = FALSE;
1390 assert (info->private_data != NULL);
1391 arc_infop = info->private_data;
1393 insn->length = arc_infop->insn_len;;
1394 insn->address = addr;
1396 /* Quick exit if memory at this address is not an instruction. */
1397 if (info->insn_type == dis_noninsn)
1399 insn->valid = FALSE;
1405 opcode = (const struct arc_opcode *) arc_infop->opcode;
1406 insn->insn_class = opcode->insn_class;
1407 insn->limm_value = arc_infop->limm;
1408 insn->limm_p = arc_infop->limm_p;
1410 insn->is_control_flow = (info->insn_type == dis_branch
1411 || info->insn_type == dis_condbranch
1412 || info->insn_type == dis_jsr
1413 || info->insn_type == dis_condjsr);
1415 insn->has_delay_slot = info->branch_delay_insns;
1416 insn->writeback_mode
1417 = (enum arc_ldst_writeback_mode) arc_infop->writeback_mode;
1418 insn->data_size_mode = info->data_size;
1419 insn->condition_code = arc_infop->condition_code;
1420 memcpy (insn->operands, arc_infop->operands,
1421 sizeof (struct arc_insn_operand) * MAX_INSN_ARGS);
1422 insn->operands_count = arc_infop->operands_count;
1426 eval: (c-set-style "gnu")