diff options
Diffstat (limited to 'opcodes/hppa-dis.c')
| -rw-r--r-- | opcodes/hppa-dis.c | 631 |
1 files changed, 631 insertions, 0 deletions
diff --git a/opcodes/hppa-dis.c b/opcodes/hppa-dis.c new file mode 100644 index 0000000..dc45d5e --- /dev/null +++ b/opcodes/hppa-dis.c @@ -0,0 +1,631 @@ +/* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#include <ansidecl.h> +#include "sysdep.h" +#include "dis-asm.h" +#include "libhppa.h" +#include "opcode/hppa.h" + +/* Integer register names, indexed by the numbers which appear in the + opcodes. */ +static const char *const reg_names[] = + {"flags", "r1", "rp", "r3", "r4", "r5", "r6", "r7", "r8", "r9", + "r10", "r11", "r12", "r13", "r14", "r15", "r16", "r17", "r18", "r19", + "r20", "r21", "r22", "r23", "r24", "r25", "r26", "dp", "ret0", "ret1", + "sp", "r31"}; + +/* Floating point register names, indexed by the numbers which appear in the + opcodes. */ +static const char *const fp_reg_names[] = + {"fpsr", "fpe2", "fpe4", "fpe6", + "fr4", "fr5", "fr6", "fr7", "fr8", + "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", + "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23", + "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31"}; + +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_fp_reg (reg, info) + unsigned reg; + disassemble_info *info; +{ + (*info->fprintf_func) (info->stream, reg ? fp_reg_names[reg] : "fr0"); +} + +static void +fput_fp_reg_r (reg, info) + unsigned reg; + disassemble_info *info; +{ + /* Special case floating point exception registers. */ + if (reg < 4) + (*info->fprintf_func) (info->stream, "fpe%d", reg * 2 + 1); + else + (*info->fprintf_func) (info->stream, "%sR", reg ? fp_reg_names[reg] + : "fr0"); +} + +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. */ + +/* 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); +} + +/* 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; +} + +/* 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; +{ + bfd_byte buffer[4]; + unsigned int insn, i; + + { + int status = + (*info->read_memory_func) (memaddr, buffer, sizeof (buffer), info); + if (status != 0) + { + (*info->memory_error_func) (status, memaddr, info); + return -1; + } + } + + insn = bfd_getb32 (buffer); + + 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 ("cfCY<?!@-+&U>~nHNZFIMadu|", 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), info); + break; + case 'X': + if (GET_FIELD (insn, 25, 25)) + fput_fp_reg_r (GET_FIELD (insn, 11, 15), info); + else + fput_fp_reg (GET_FIELD (insn, 11, 15), info); + break; + case 'b': + fput_reg (GET_FIELD (insn, 6, 10), info); + break; + case '^': + fput_creg (GET_FIELD (insn, 6, 10), info); + break; + case 'E': + if (GET_FIELD (insn, 25, 25)) + fput_fp_reg_r (GET_FIELD (insn, 6, 10), info); + else + fput_fp_reg (GET_FIELD (insn, 6, 10), info); + break; + case 't': + fput_reg (GET_FIELD (insn, 27, 31), info); + break; + case 'v': + if (GET_FIELD (insn, 25, 25)) + fput_fp_reg_r (GET_FIELD (insn, 27, 31), info); + else + fput_fp_reg (GET_FIELD (insn, 27, 31), info); + break; + case 'y': + fput_fp_reg (GET_FIELD (insn, 27, 31), info); + break; + case '4': + { + int reg = GET_FIELD (insn, 6, 10); + + reg |= (GET_FIELD (insn, 26, 26) << 4); + fput_fp_reg (reg, info); + break; + } + case '6': + { + int reg = GET_FIELD (insn, 11, 15); + + reg |= (GET_FIELD (insn, 26, 26) << 4); + fput_fp_reg (reg, info); + break; + } + case '7': + { + int reg = GET_FIELD (insn, 27, 31); + + reg |= (GET_FIELD (insn, 26, 26) << 4); + fput_fp_reg (reg, info); + break; + } + case '8': + { + int reg = GET_FIELD (insn, 16, 20); + + reg |= (GET_FIELD (insn, 26, 26) << 4); + fput_fp_reg (reg, info); + break; + } + case '9': + { + int reg = GET_FIELD (insn, 21, 25); + + reg |= (GET_FIELD (insn, 26, 26) << 4); + fput_fp_reg (reg, info); + break; + } + case '5': + fput_const (extract_5_load (insn), info); + break; + case 's': + (*info->fprintf_func) (info->stream, + "sr%d", GET_FIELD (insn, 16, 17)); + break; + 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)], + info); + break; + case '?': + fputs_filtered (compare_cond_names[GET_FIELD (insn, 16, 18) + + GET_FIELD (insn, 4, 4) * 8], info); + break; + case '@': + fputs_filtered (add_cond_names[GET_FIELD (insn, 16, 18) + + GET_FIELD (insn, 4, 4) * 8], info); + break; + case 'a': + (*info->fprintf_func) (info->stream, "%s ", + compare_cond_names[GET_COND (insn)]); + break; + case 'd': + (*info->fprintf_func) (info->stream, "%s ", + add_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 '>': + case '~': + (*info->fprintf_func) + (info->stream, "%s", + shift_cond_names[GET_FIELD (insn, 16, 18)]); + + /* If the next character in args is 'n', it will handle + putting out the space. */ + if (s[1] != 'n') + (*info->fprintf_func) (info->stream, " "); + break; + case 'V': + fput_const (extract_5_store (insn), info); + break; + case 'r': + fput_const (extract_5r_store (insn), info); + break; + case 'R': + fput_const (extract_5R_store (insn), info); + break; + case 'Q': + fput_const (extract_5Q_store (insn), info); + break; + case 'i': + fput_const (extract_11 (insn), info); + break; + case 'j': + fput_const (extract_14 (insn), info); + break; + case 'k': + fput_const (extract_21 (insn), info); + break; + case 'n': + if (insn & 0x2) + (*info->fprintf_func) (info->stream, ",n "); + else + (*info->fprintf_func) (info->stream, " "); + break; + case 'N': + if ((insn & 0x20) && s[1]) + (*info->fprintf_func) (info->stream, ",n "); + else if (insn & 0x20) + (*info->fprintf_func) (info->stream, ",n"); + else if (s[1]) + (*info->fprintf_func) (info->stream, " "); + break; + case 'w': + (*info->print_address_func) (memaddr + 8 + extract_12 (insn), + info); + break; + case 'W': + /* 17 bit PC-relative branch. */ + (*info->print_address_func) ((memaddr + 8 + + extract_17 (insn)), + info); + break; + case 'z': + /* 17 bit displacement. This is an offset from a register + so it gets disasssembled as just a number, not any sort + of address. */ + fput_const (extract_17 (insn), info); + 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), info); + 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), info); + 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)), info); + break; + case 'o': + fput_const (GET_FIELD (insn, 6, 20), info); + break; + case '3': + { + int reg = GET_FIELD (insn, 21, 22); + reg |= GET_FIELD (insn, 16, 18) << 2; + if (GET_FIELD (insn, 23, 23) != 0) + fput_fp_reg_r (reg, info); + else + fput_fp_reg (reg, info); + break; + } + + case '2': + fput_const ((GET_FIELD (insn, 6, 22) << 5 | + GET_FIELD (insn, 27, 31)), info); + break; + case '1': + fput_const ((GET_FIELD (insn, 11, 20) << 5 | + GET_FIELD (insn, 27, 31)), info); + break; + case '0': + fput_const ((GET_FIELD (insn, 16, 20) << 5 | + GET_FIELD (insn, 27, 31)), info); + break; + case 'u': + (*info->fprintf_func) (info->stream, ",%d", GET_FIELD (insn, 23, 25)); + break; + case 'F': + /* if no destination completer and not before a completer + for fcmp, need a space here */ + if (GET_FIELD (insn, 21, 22) == 1 || s[1] == 'M') + fputs_filtered (float_format_names[GET_FIELD (insn, 19, 20)], + info); + 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': + if (GET_FIELD (insn, 26, 26) == 1) + (*info->fprintf_func) (info->stream, "%s ", + float_format_names[0]); + else + (*info->fprintf_func) (info->stream, "%s ", + float_format_names[1]); + break; + case 'I': + /* if no destination completer and not before a completer + for fcmp, need a space here */ + if (GET_FIELD (insn, 21, 22) == 1 || s[1] == 'M') + fputs_filtered (float_format_names[GET_FIELD (insn, 20, 20)], + info); + else + (*info->fprintf_func) (info->stream, "%s ", + float_format_names[GET_FIELD + (insn, 20, 20)]); + break; + case 'J': + if (GET_FIELD (insn, 24, 24)) + fput_fp_reg_r (GET_FIELD (insn, 6, 10), info); + else + fput_fp_reg (GET_FIELD (insn, 6, 10), info); + + break; + case 'K': + if (GET_FIELD (insn, 19, 19)) + fput_fp_reg_r (GET_FIELD (insn, 11, 15), info); + else + fput_fp_reg (GET_FIELD (insn, 11, 15), info); + break; + case 'M': + (*info->fprintf_func) (info->stream, "%s ", + float_comp_names[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); +} |