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- /* Disassembler for the PA-RISC. Somewhat derived from sparc-pinsn.c.
- Copyright 1989, 1990, 1992, 1993 Free Software Foundation, Inc.
-
- Contributed by the Center for Software Science at the
- University of Utah (pa-gdb-bugs@cs.utah.edu).
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "dis-asm.h"
- #include "sysdep.h"
- #include "opcode/hppa.h"
-
- /* Initializer for an array of names of registers.
- There should be NUM_REGS strings in this initializer. */
-
- #define REGISTER_NAMES \
- {"flags", "r1", "rp", "r3", "r4", "r5", "r6", "r7", "r8", "r9", \
- "r10", "r11", "r12", "r13", "r14", "r15", "r16", "r17", "r18", "r19", \
- "r20", "r21", "r22", "arg3", "arg2", "arg1", "arg0", "dp", "ret0", "ret1", \
- "sp", "r31", "sar", "pcoqh", "pcsqh", "pcoqt", "pcsqt", \
- "eiem", "iir", "isr", "ior", "ipsw", "goto", "sr4", "sr0", "sr1", "sr2", \
- "sr3", "sr5", "sr6", "sr7", "cr0", "cr8", "cr9", "ccr", "cr12", "cr13", \
- "cr24", "cr25", "cr26", "mpsfu_high", "mpsfu_low", "mpsfu_ovflo", "pad", \
- "fpsr", "fpe1", "fpe2", "fpe3", "fpe4", "fpe5", "fpe6", "fpe7", \
- "fp4", "fp5", "fp6", "fp7", "fp8", \
- "fp9", "fp10", "fp11", "fp12", "fp13", "fp14", "fp15", \
- "fp16", "fp17", "fp18", "fp19", "fp20", "fp21", "fp22", "fp23", \
- "fp24", "fp25", "fp26", "fp27", "fp28", "fp29", "fp30", "fp31"}
-
- static const char *const reg_names[] = REGISTER_NAMES;
-
- typedef unsigned int CORE_ADDR;
-
- /* Get at various relevent fields of an instruction word. */
-
- #define MASK_5 0x1f
- #define MASK_11 0x7ff
- #define MASK_14 0x3fff
- #define MASK_21 0x1fffff
-
- /* This macro gets bit fields using HP's numbering (MSB = 0) */
-
- #define GET_FIELD(X, FROM, TO) \
- ((X) >> (31 - (TO)) & ((1 << ((TO) - (FROM) + 1)) - 1))
-
- /* Some of these have been converted to 2-d arrays because they
- consume less storage this way. If the maintenance becomes a
- problem, convert them back to const 1-d pointer arrays. */
- static const char control_reg[][6] = {
- "rctr", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7",
- "pidr1", "pidr2", "ccr", "sar", "pidr3", "pidr4",
- "iva", "eiem", "itmr", "pcsq", "pcoq", "iir", "isr",
- "ior", "ipsw", "eirr", "tr0", "tr1", "tr2", "tr3",
- "tr4", "tr5", "tr6", "tr7"
- };
-
- static const char compare_cond_names[][5] = {
- "", ",=", ",<", ",<=", ",<<", ",<<=", ",sv",
- ",od", ",tr", ",<>", ",>=", ",>", ",>>=",
- ",>>", ",nsv", ",ev"
- };
- static const char add_cond_names[][5] = {
- "", ",=", ",<", ",<=", ",nuv", ",znv", ",sv",
- ",od", ",tr", ",<>", ",>=", ",>", ",uv",
- ",vnz", ",nsv", ",ev"
- };
- static const char *const logical_cond_names[] = {
- "", ",=", ",<", ",<=", 0, 0, 0, ",od",
- ",tr", ",<>", ",>=", ",>", 0, 0, 0, ",ev"};
- static const char *const unit_cond_names[] = {
- "", 0, ",sbz", ",shz", ",sdc", 0, ",sbc", ",shc",
- ",tr", 0, ",nbz", ",nhz", ",ndc", 0, ",nbc", ",nhc"
- };
- static const char shift_cond_names[][4] = {
- "", ",=", ",<", ",od", ",tr", ",<>", ",>=", ",ev"
- };
- static const char index_compl_names[][4] = {"", ",m", ",s", ",sm"};
- static const char short_ldst_compl_names[][4] = {"", ",ma", "", ",mb"};
- static const char *const short_bytes_compl_names[] = {
- "", ",b,m", ",e", ",e,m"
- };
- static const char *const float_format_names[] = {",sgl", ",dbl", ",quad"};
- static const char float_comp_names[][8] =
- {
- ",false?", ",false", ",?", ",!<=>", ",=", ",=t", ",?=", ",!<>",
- ",!?>=", ",<", ",?<", ",!>=", ",!?>", ",<=", ",?<=", ",!>",
- ",!?<=", ",>", ",?>", ",!<=", ",!?<", ",>=", ",?>=", ",!<",
- ",!?=", ",<>", ",!=", ",!=t", ",!?", ",<=>", ",true?", ",true"
- };
-
- /* For a bunch of different instructions form an index into a
- completer name table. */
- #define GET_COMPL(insn) (GET_FIELD (insn, 26, 26) | \
- GET_FIELD (insn, 18, 18) << 1)
-
- #define GET_COND(insn) (GET_FIELD ((insn), 16, 18) + \
- (GET_FIELD ((insn), 19, 19) ? 8 : 0))
-
- /* Utility function to print registers. Put these first, so gcc's function
- inlining can do its stuff. */
-
- #define fputs_filtered(STR,F) (*info->fprintf_func) (info->stream, "%s", STR)
-
- static void
- fput_reg (reg, info)
- unsigned reg;
- disassemble_info *info;
- {
- (*info->fprintf_func) (info->stream, reg ? reg_names[reg] : "r0");
- }
-
- static void
- fput_reg_r (reg, info)
- unsigned reg;
- disassemble_info *info;
- {
- (*info->fprintf_func) (info->stream, "%sR", reg ? reg_names[reg] : "r0");
- }
-
- static void
- fput_creg (reg, info)
- unsigned reg;
- disassemble_info *info;
- {
- (*info->fprintf_func) (info->stream, control_reg[reg]);
- }
-
- /* print constants with sign */
-
- static void
- fput_const (num, info)
- unsigned num;
- disassemble_info *info;
- {
- if ((int)num < 0)
- (*info->fprintf_func) (info->stream, "-%x", -(int)num);
- else
- (*info->fprintf_func) (info->stream, "%x", num);
- }
-
- /* Routines to extract various sized constants out of hppa
- instructions. */
-
- /* This assumes that no garbage lies outside of the lower bits of
- value. */
-
- static int
- sign_extend (val, bits)
- unsigned val, bits;
- {
- return (int)(val >> (bits - 1) ? (-1 << bits) | val : val);
- }
-
- /* For many immediate values the sign bit is the low bit! */
-
- static int
- low_sign_extend (val, bits)
- unsigned val, bits;
- {
- return (int)((val & 0x1 ? (-1 << (bits - 1)) : 0) | val >> 1);
- }
- /* extract the immediate field from a ld{bhw}s instruction */
-
- #if 0 /* not used */
- static unsigned
- get_field (val, from, to)
- unsigned val, from, to;
- {
- val = val >> (31 - to);
- return val & ((1 << (32 - from)) - 1);
- }
-
- static unsigned
- set_field (val, from, to, new_val)
- unsigned *val, from, to, new_val;
- {
- unsigned mask = ~((1 << (to - from + 1)) << (31 - from));
- return *val = (*val & mask) | (new_val << (31 - from));
- }
- #endif
-
- /* extract a 3-bit space register number from a be, ble, mtsp or mfsp */
- static int
- extract_3 (word)
- unsigned word;
- {
- return GET_FIELD (word, 18, 18) << 2 | GET_FIELD (word, 16, 17);
- }
-
- static int
- extract_5_load (word)
- unsigned word;
- {
- return low_sign_extend (word >> 16 & MASK_5, 5);
- }
-
- /* extract the immediate field from a st{bhw}s instruction */
- static int
- extract_5_store (word)
- unsigned word;
- {
- return low_sign_extend (word & MASK_5, 5);
- }
-
- /* extract the immediate field from a break instruction */
- static unsigned
- extract_5r_store (word)
- unsigned word;
- {
- return (word & MASK_5);
- }
-
- /* extract the immediate field from a {sr}sm instruction */
- static unsigned
- extract_5R_store (word)
- unsigned word;
- {
- return (word >> 16 & MASK_5);
- }
-
- /* extract the immediate field from a bb instruction */
- static unsigned
- extract_5Q_store (word)
- unsigned word;
- {
- return (word >> 21 & MASK_5);
- }
-
- /* extract an 11 bit immediate field */
- static int
- extract_11 (word)
- unsigned word;
- {
- return low_sign_extend (word & MASK_11, 11);
- }
-
- /* extract a 14 bit immediate field */
- static int
- extract_14 (word)
- unsigned word;
- {
- return low_sign_extend (word & MASK_14, 14);
- }
-
- #if 0
- /* deposit a 14 bit constant in a word */
- static unsigned
- deposit_14 (opnd, word)
- int opnd;
- unsigned word;
- {
- unsigned sign = (opnd < 0 ? 1 : 0);
-
- return word | ((unsigned)opnd << 1 & MASK_14) | sign;
- }
- #endif
-
- /* extract a 21 bit constant */
-
- static int
- extract_21 (word)
- unsigned word;
- {
- int val;
-
- word &= MASK_21;
- word <<= 11;
- val = GET_FIELD (word, 20, 20);
- val <<= 11;
- val |= GET_FIELD (word, 9, 19);
- val <<= 2;
- val |= GET_FIELD (word, 5, 6);
- val <<= 5;
- val |= GET_FIELD (word, 0, 4);
- val <<= 2;
- val |= GET_FIELD (word, 7, 8);
- return sign_extend (val, 21) << 11;
- }
-
- #if 0
- /* deposit a 21 bit constant in a word. Although 21 bit constants are
- usually the top 21 bits of a 32 bit constant, we assume that only
- the low 21 bits of opnd are relevant */
-
- static unsigned
- deposit_21 (opnd, word)
- unsigned opnd, word;
- {
- unsigned val = 0;
-
- val |= GET_FIELD (opnd, 11 + 14, 11 + 18);
- val <<= 2;
- val |= GET_FIELD (opnd, 11 + 12, 11 + 13);
- val <<= 2;
- val |= GET_FIELD (opnd, 11 + 19, 11 + 20);
- val <<= 11;
- val |= GET_FIELD (opnd, 11 + 1, 11 + 11);
- val <<= 1;
- val |= GET_FIELD (opnd, 11 + 0, 11 + 0);
- return word | val;
- }
- #endif
-
- /* extract a 12 bit constant from branch instructions */
-
- static int
- extract_12 (word)
- unsigned word;
- {
- return sign_extend (GET_FIELD (word, 19, 28) |
- GET_FIELD (word, 29, 29) << 10 |
- (word & 0x1) << 11, 12) << 2;
- }
-
- /* extract a 17 bit constant from branch instructions, returning the
- 19 bit signed value. */
-
- static int
- extract_17 (word)
- unsigned word;
- {
- return sign_extend (GET_FIELD (word, 19, 28) |
- GET_FIELD (word, 29, 29) << 10 |
- GET_FIELD (word, 11, 15) << 11 |
- (word & 0x1) << 16, 17) << 2;
- }
-
- /* Print one instruction. */
- int
- print_insn_hppa (memaddr, info)
- bfd_vma memaddr;
- disassemble_info *info;
- {
- unsigned int insn, i, op;
- FILE *stream = info->stream;
-
- {
- int status =
- (*info->read_memory_func) (memaddr, (bfd_byte*) &insn, sizeof (insn),
- info);
- if (status != 0)
- {
- (*info->memory_error_func) (status, memaddr, info);
- return -1;
- }
- }
-
- for (i = 0; i < NUMOPCODES; ++i)
- {
- const struct pa_opcode *opcode = &pa_opcodes[i];
- if ((insn & opcode->mask) == opcode->match)
- {
- register const char *s;
-
- (*info->fprintf_func) (info->stream, "%s", opcode->name);
-
- if (!strchr ("cCY<?!@-+&U>~nZFM", opcode->args[0]))
- (*info->fprintf_func) (info->stream, " ");
- for (s = opcode->args; *s != '\0'; ++s)
- {
- switch (*s)
- {
- case 'x':
- fput_reg (GET_FIELD (insn, 11, 15), stream);
- break;
- case 'X':
- if (GET_FIELD (insn, 25, 25))
- fput_reg_r (GET_FIELD (insn, 11, 15), stream);
- else
- fput_reg (GET_FIELD (insn, 11, 15), stream);
- break;
- case 'b':
- fput_reg (GET_FIELD (insn, 6, 10), stream);
- break;
- case '^':
- fput_creg (GET_FIELD (insn, 6, 10), stream);
- break;
- case 'E':
- if (GET_FIELD (insn, 25, 25))
- fput_reg_r (GET_FIELD (insn, 6, 10), stream);
- else
- fput_reg (GET_FIELD (insn, 6, 10), stream);
- break;
- case 't':
- fput_reg (GET_FIELD (insn, 27, 31), stream);
- break;
- case 'v':
- if (GET_FIELD (insn, 25, 25))
- fput_reg_r (GET_FIELD (insn, 27, 31), stream);
- else
- fput_reg (GET_FIELD (insn, 27, 31), stream);
- break;
- case '4':
- fput_creg (GET_FIELD (insn, 6, 10), stream);
- break;
- case '6':
- fput_reg (GET_FIELD (insn, 11, 15), stream);
- break;
- case '7':
- fput_reg (GET_FIELD (insn, 27, 31), stream);
- break;
- case '8':
- fput_reg (GET_FIELD (insn, 16, 20), stream);
- break;
- case '9':
- fput_reg (GET_FIELD (insn, 21, 25), stream);
- break;
- case '5':
- fput_const (extract_5_load (insn), stream);
- break;
- /* case 's': */
- case 'S':
- (*info->fprintf_func) (info->stream, "sr%d", extract_3 (insn));
- break;
- case 'c':
- (*info->fprintf_func) (info->stream, "%s ",
- index_compl_names[GET_COMPL (insn)]);
- break;
- case 'C':
- (*info->fprintf_func) (info->stream, "%s ",
- short_ldst_compl_names[GET_COMPL (insn)]);
- break;
- case 'Y':
- (*info->fprintf_func) (info->stream, "%s ",
- short_bytes_compl_names[GET_COMPL (insn)]);
- break;
- /* these four conditions are for the set of instructions
- which distinguish true/false conditions by opcode rather
- than by the 'f' bit (sigh): comb, comib, addb, addib */
- case '<':
- fputs_filtered (compare_cond_names[GET_FIELD (insn, 16, 18)],
- stream);
- break;
- case '?':
- fputs_filtered (compare_cond_names[GET_FIELD (insn, 16, 18) + 8],
- stream);
- break;
- case '!':
- fputs_filtered (add_cond_names[GET_FIELD (insn, 16, 18)],
- stream);
- break;
- case '@':
- fputs_filtered (add_cond_names[GET_FIELD (insn, 16, 18) + 8],
- stream);
- break;
- case '-':
- (*info->fprintf_func) (info->stream, "%s ",
- compare_cond_names[GET_COND (insn)]);
- break;
- case '+':
- (*info->fprintf_func) (info->stream, "%s ",
- add_cond_names[GET_FIELD (insn, 16, 18)]);
- break;
-
- case '&':
- (*info->fprintf_func) (info->stream, "%s ",
- logical_cond_names[GET_COND (insn)]);
- break;
- case 'U':
- (*info->fprintf_func) (info->stream, "%s ",
- unit_cond_names[GET_COND (insn)]);
- break;
- case '>':
- case '~':
- (*info->fprintf_func) (info->stream, "%s ",
- shift_cond_names[GET_FIELD (insn, 16, 18)]);
- break;
- case 'V':
- fput_const (extract_5_store (insn), stream);
- break;
- case 'r':
- fput_const (extract_5r_store (insn), stream);
- break;
- case 'R':
- fput_const (extract_5R_store (insn), stream);
- break;
- case 'Q':
- fput_const (extract_5Q_store (insn), stream);
- break;
- case 'i':
- fput_const (extract_11 (insn), stream);
- break;
- case 'j':
- fput_const (extract_14 (insn), stream);
- break;
- case 'k':
- fput_const (extract_21 (insn), stream);
- break;
- case 'n':
- if (insn & 0x2)
- (*info->fprintf_func) (info->stream, ",n ");
- else
- (*info->fprintf_func) (info->stream, " ");
- break;
- case 'w':
- (*info->print_address_func) (memaddr + 8 + extract_12 (insn),
- info);
- break;
- case 'W':
- /* don't interpret an address if it's an external branch
- instruction. */
- op = GET_FIELD (insn, 0, 5);
- if (op != 0x38 /* be */ && op != 0x39 /* ble */)
- (*info->print_address_func) ((memaddr + 8
- + extract_17 (insn)),
- info);
- else
- fput_const (extract_17 (insn), stream);
- break;
- case 'B':
- {
- int space = GET_FIELD (insn, 16, 17);
- if (space)
- (*info->fprintf_func) (info->stream, "sr%d,", space);
- fput_reg (GET_FIELD (insn, 6, 10), stream);
- break;
- }
- case 'p':
- (*info->fprintf_func) (info->stream, "%d",
- 31 - GET_FIELD (insn, 22, 26));
- break;
- case 'P':
- (*info->fprintf_func) (info->stream, "%d",
- GET_FIELD (insn, 22, 26));
- break;
- case 'T':
- (*info->fprintf_func) (info->stream, "%d",
- 32 - GET_FIELD (insn, 27, 31));
- break;
- case 'A':
- fput_const (GET_FIELD (insn, 6, 18), stream);
- break;
- case 'Z':
- if (GET_FIELD (insn, 26, 26))
- (*info->fprintf_func) (info->stream, ",m ");
- else
- (*info->fprintf_func) (info->stream, " ");
- break;
- case 'D':
- fput_const (GET_FIELD (insn, 6, 31), stream);
- break;
- case 'f':
- (*info->fprintf_func) (info->stream, ",%d", GET_FIELD (insn, 23, 25));
- break;
- case 'O':
- fput_const ((GET_FIELD (insn, 6,20) << 5 |
- GET_FIELD (insn, 27, 31)), stream);
- break;
- case 'o':
- fput_const (GET_FIELD (insn, 6, 20), stream);
- break;
- case '2':
- fput_const ((GET_FIELD (insn, 6, 22) << 5 |
- GET_FIELD (insn, 27, 31)), stream);
- break;
- case '1':
- fput_const ((GET_FIELD (insn, 11, 20) << 5 |
- GET_FIELD (insn, 27, 31)), stream);
- break;
- case '0':
- fput_const ((GET_FIELD (insn, 16, 20) << 5 |
- GET_FIELD (insn, 27, 31)), stream);
- break;
- case 'u':
- (*info->fprintf_func) (info->stream, "%d", GET_FIELD (insn, 23, 25));
- break;
- case 'F':
- /* if no destination completer, need a space here */
- if (GET_FIELD (insn, 21, 22) == 1)
- fputs_filtered (float_format_names[GET_FIELD (insn, 19, 20)],
- stream);
- else
- (*info->fprintf_func) (info->stream, "%s ",
- float_format_names[GET_FIELD
- (insn, 19, 20)]);
- break;
- case 'G':
- (*info->fprintf_func) (info->stream, "%s ",
- float_format_names[GET_FIELD (insn,
- 17, 18)]);
- break;
- case 'H':
- fputs_filtered (float_format_names[GET_FIELD
- (insn, 26, 26)], stream);
- break;
- case 'M':
- fputs_filtered (float_comp_names[GET_FIELD (insn, 27, 31)],
- stream);
- break;
- case '}':
- (*info->fprintf_func) (info->stream, "fp%d", GET_FIELD (insn, 6, 10));
- break;
- case '|':
- (*info->fprintf_func) (info->stream, "fp%d", GET_FIELD (insn, 11, 15));
- break;
- case '{':
- if (GET_FIELD (insn, 23, 25) == 0)
- (*info->fprintf_func) (info->stream, "fp%d",
- GET_FIELD (insn, 27, 31));
- else
- (*info->fprintf_func) (info->stream, "cp%d",
- GET_FIELD (insn, 27, 31));
- break;
- default:
- (*info->fprintf_func) (info->stream, "%c", *s);
- break;
- }
- }
- return sizeof(insn);
- }
- }
- (*info->fprintf_func) (info->stream, "#%8x", insn);
- return sizeof(insn);
- }
-