/* OBSOLETE /* Print instructions for Tahoe target machines, for GDB. */ /* OBSOLETE Copyright 1986, 1989, 1991, 1992, 2000 Free Software Foundation, Inc. */ /* OBSOLETE Contributed by the State University of New York at Buffalo, by the */ /* OBSOLETE Distributed Computer Systems Lab, Department of Computer Science, 1991. */ /* OBSOLETE */ /* OBSOLETE This file is part of GDB. */ /* OBSOLETE */ /* OBSOLETE This program is free software; you can redistribute it and/or modify */ /* OBSOLETE it under the terms of the GNU General Public License as published by */ /* OBSOLETE the Free Software Foundation; either version 2 of the License, or */ /* OBSOLETE (at your option) any later version. */ /* OBSOLETE */ /* OBSOLETE This program is distributed in the hope that it will be useful, */ /* OBSOLETE but WITHOUT ANY WARRANTY; without even the implied warranty of */ /* OBSOLETE MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ /* OBSOLETE GNU General Public License for more details. */ /* OBSOLETE */ /* OBSOLETE You should have received a copy of the GNU General Public License */ /* OBSOLETE along with this program; if not, write to the Free Software */ /* OBSOLETE Foundation, Inc., 59 Temple Place - Suite 330, */ /* OBSOLETE Boston, MA 02111-1307, USA. *x/ */ /* OBSOLETE */ /* OBSOLETE #include "defs.h" */ /* OBSOLETE #include "symtab.h" */ /* OBSOLETE #include "opcode/tahoe.h" */ /* OBSOLETE */ /* OBSOLETE /* Tahoe instructions are never longer than this. *x/ */ /* OBSOLETE #define MAXLEN 62 */ /* OBSOLETE */ /* OBSOLETE /* Number of elements in the opcode table. *x/ */ /* OBSOLETE #define NOPCODES (sizeof votstrs / sizeof votstrs[0]) */ /* OBSOLETE */ /* OBSOLETE static unsigned char *print_insn_arg (); */ /* OBSOLETE */ /* OBSOLETE /* Advance PC across any function entry prologue instructions */ /* OBSOLETE to reach some "real" code. *x/ */ /* OBSOLETE */ /* OBSOLETE CORE_ADDR */ /* OBSOLETE tahoe_skip_prologue (pc) */ /* OBSOLETE CORE_ADDR pc; */ /* OBSOLETE { */ /* OBSOLETE register int op = (unsigned char) read_memory_integer (pc, 1); */ /* OBSOLETE if (op == 0x11) */ /* OBSOLETE pc += 2; /* skip brb *x/ */ /* OBSOLETE if (op == 0x13) */ /* OBSOLETE pc += 3; /* skip brw *x/ */ /* OBSOLETE if (op == 0x2c */ /* OBSOLETE && ((unsigned char) read_memory_integer (pc + 2, 1)) == 0x5e) */ /* OBSOLETE pc += 3; /* skip subl2 *x/ */ /* OBSOLETE if (op == 0xe9 */ /* OBSOLETE && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xae */ /* OBSOLETE && ((unsigned char) read_memory_integer (pc + 3, 1)) == 0x5e) */ /* OBSOLETE pc += 4; /* skip movab *x/ */ /* OBSOLETE if (op == 0xe9 */ /* OBSOLETE && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xce */ /* OBSOLETE && ((unsigned char) read_memory_integer (pc + 4, 1)) == 0x5e) */ /* OBSOLETE pc += 5; /* skip movab *x/ */ /* OBSOLETE if (op == 0xe9 */ /* OBSOLETE && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xee */ /* OBSOLETE && ((unsigned char) read_memory_integer (pc + 6, 1)) == 0x5e) */ /* OBSOLETE pc += 7; /* skip movab *x/ */ /* OBSOLETE return pc; */ /* OBSOLETE } */ /* OBSOLETE */ /* OBSOLETE /* Return number of args passed to a frame. */ /* OBSOLETE Can return -1, meaning no way to tell. *x/ */ /* OBSOLETE */ /* OBSOLETE int */ /* OBSOLETE tahoe_frame_num_args (fi) */ /* OBSOLETE struct frame_info *fi; */ /* OBSOLETE { */ /* OBSOLETE return (((0xffff & read_memory_integer (((fi)->frame - 4), 4)) - 4) >> 2); */ /* OBSOLETE } */ /* OBSOLETE */ /* OBSOLETE /* Print the Tahoe instruction at address MEMADDR in debugged memory, */ /* OBSOLETE on STREAM. Returns length of the instruction, in bytes. *x/ */ /* OBSOLETE */ /* OBSOLETE int */ /* OBSOLETE tahoe_print_insn (memaddr, stream) */ /* OBSOLETE CORE_ADDR memaddr; */ /* OBSOLETE struct ui_file *stream; */ /* OBSOLETE { */ /* OBSOLETE unsigned char buffer[MAXLEN]; */ /* OBSOLETE register int i; */ /* OBSOLETE register unsigned char *p; */ /* OBSOLETE register char *d; */ /* OBSOLETE */ /* OBSOLETE read_memory (memaddr, buffer, MAXLEN); */ /* OBSOLETE */ /* OBSOLETE for (i = 0; i < NOPCODES; i++) */ /* OBSOLETE if (votstrs[i].detail.code == buffer[0] */ /* OBSOLETE || votstrs[i].detail.code == *(unsigned short *) buffer) */ /* OBSOLETE break; */ /* OBSOLETE */ /* OBSOLETE /* Handle undefined instructions. *x/ */ /* OBSOLETE if (i == NOPCODES) */ /* OBSOLETE { */ /* OBSOLETE fprintf_unfiltered (stream, "0%o", buffer[0]); */ /* OBSOLETE return 1; */ /* OBSOLETE } */ /* OBSOLETE */ /* OBSOLETE fprintf_unfiltered (stream, "%s", votstrs[i].name); */ /* OBSOLETE */ /* OBSOLETE /* Point at first byte of argument data, */ /* OBSOLETE and at descriptor for first argument. *x/ */ /* OBSOLETE p = buffer + 1 + (votstrs[i].detail.code >= 0x100); */ /* OBSOLETE d = votstrs[i].detail.args; */ /* OBSOLETE */ /* OBSOLETE if (*d) */ /* OBSOLETE fputc_unfiltered ('\t', stream); */ /* OBSOLETE */ /* OBSOLETE while (*d) */ /* OBSOLETE { */ /* OBSOLETE p = print_insn_arg (d, p, memaddr + (p - buffer), stream); */ /* OBSOLETE d += 2; */ /* OBSOLETE if (*d) */ /* OBSOLETE fprintf_unfiltered (stream, ","); */ /* OBSOLETE } */ /* OBSOLETE return p - buffer; */ /* OBSOLETE } */ /* OBSOLETE /*******************************************************************x/ */ /* OBSOLETE static unsigned char * */ /* OBSOLETE print_insn_arg (d, p, addr, stream) */ /* OBSOLETE char *d; */ /* OBSOLETE register char *p; */ /* OBSOLETE CORE_ADDR addr; */ /* OBSOLETE struct ui_file *stream; */ /* OBSOLETE { */ /* OBSOLETE int temp1 = 0; */ /* OBSOLETE register int regnum = *p & 0xf; */ /* OBSOLETE float floatlitbuf; */ /* OBSOLETE */ /* OBSOLETE if (*d == 'b') */ /* OBSOLETE { */ /* OBSOLETE if (d[1] == 'b') */ /* OBSOLETE fprintf_unfiltered (stream, "0x%x", addr + *p++ + 1); */ /* OBSOLETE else */ /* OBSOLETE { */ /* OBSOLETE */ /* OBSOLETE temp1 = *p; */ /* OBSOLETE temp1 <<= 8; */ /* OBSOLETE temp1 |= *(p + 1); */ /* OBSOLETE fprintf_unfiltered (stream, "0x%x", addr + temp1 + 2); */ /* OBSOLETE p += 2; */ /* OBSOLETE } */ /* OBSOLETE } */ /* OBSOLETE else */ /* OBSOLETE switch ((*p++ >> 4) & 0xf) */ /* OBSOLETE { */ /* OBSOLETE case 0: */ /* OBSOLETE case 1: */ /* OBSOLETE case 2: */ /* OBSOLETE case 3: /* Literal (short immediate byte) mode *x/ */ /* OBSOLETE if (d[1] == 'd' || d[1] == 'f' || d[1] == 'g' || d[1] == 'h') */ /* OBSOLETE { */ /* OBSOLETE *(int *) &floatlitbuf = 0x4000 + ((p[-1] & 0x3f) << 4); */ /* OBSOLETE fprintf_unfiltered (stream, "$%f", floatlitbuf); */ /* OBSOLETE } */ /* OBSOLETE else */ /* OBSOLETE fprintf_unfiltered (stream, "$%d", p[-1] & 0x3f); */ /* OBSOLETE break; */ /* OBSOLETE */ /* OBSOLETE case 4: /* Indexed *x/ */ /* OBSOLETE p = (char *) print_insn_arg (d, p, addr + 1, stream); */ /* OBSOLETE fprintf_unfiltered (stream, "[%s]", REGISTER_NAME (regnum)); */ /* OBSOLETE break; */ /* OBSOLETE */ /* OBSOLETE case 5: /* Register *x/ */ /* OBSOLETE fprintf_unfiltered (stream, REGISTER_NAME (regnum)); */ /* OBSOLETE break; */ /* OBSOLETE */ /* OBSOLETE case 7: /* Autodecrement *x/ */ /* OBSOLETE fputc_unfiltered ('-', stream); */ /* OBSOLETE case 6: /* Register deferred *x/ */ /* OBSOLETE fprintf_unfiltered (stream, "(%s)", REGISTER_NAME (regnum)); */ /* OBSOLETE break; */ /* OBSOLETE */ /* OBSOLETE case 9: /* Absolute Address & Autoincrement deferred *x/ */ /* OBSOLETE fputc_unfiltered ('*', stream); */ /* OBSOLETE if (regnum == PC_REGNUM) */ /* OBSOLETE { */ /* OBSOLETE temp1 = *p; */ /* OBSOLETE temp1 <<= 8; */ /* OBSOLETE temp1 |= *(p + 1); */ /* OBSOLETE */ /* OBSOLETE fputc_unfiltered ('$', stream); */ /* OBSOLETE print_address (temp1, stream); */ /* OBSOLETE p += 4; */ /* OBSOLETE break; */ /* OBSOLETE } */ /* OBSOLETE case 8: /*Immediate & Autoincrement SP *x/ */ /* OBSOLETE if (regnum == 8) /*88 is Immediate Byte Mode *x/ */ /* OBSOLETE fprintf_unfiltered (stream, "$%d", *p++); */ /* OBSOLETE */ /* OBSOLETE else if (regnum == 9) /*89 is Immediate Word Mode *x/ */ /* OBSOLETE { */ /* OBSOLETE temp1 = *p; */ /* OBSOLETE temp1 <<= 8; */ /* OBSOLETE temp1 |= *(p + 1); */ /* OBSOLETE fprintf_unfiltered (stream, "$%d", temp1); */ /* OBSOLETE p += 2; */ /* OBSOLETE } */ /* OBSOLETE */ /* OBSOLETE else if (regnum == PC_REGNUM) /*8F is Immediate Long Mode *x/ */ /* OBSOLETE { */ /* OBSOLETE temp1 = *p; */ /* OBSOLETE temp1 <<= 8; */ /* OBSOLETE temp1 |= *(p + 1); */ /* OBSOLETE temp1 <<= 8; */ /* OBSOLETE temp1 |= *(p + 2); */ /* OBSOLETE temp1 <<= 8; */ /* OBSOLETE temp1 |= *(p + 3); */ /* OBSOLETE fprintf_unfiltered (stream, "$%d", temp1); */ /* OBSOLETE p += 4; */ /* OBSOLETE } */ /* OBSOLETE */ /* OBSOLETE else /*8E is Autoincrement SP Mode *x/ */ /* OBSOLETE fprintf_unfiltered (stream, "(%s)+", REGISTER_NAME (regnum)); */ /* OBSOLETE break; */ /* OBSOLETE */ /* OBSOLETE case 11: /* Register + Byte Displacement Deferred Mode *x/ */ /* OBSOLETE fputc_unfiltered ('*', stream); */ /* OBSOLETE case 10: /* Register + Byte Displacement Mode *x/ */ /* OBSOLETE if (regnum == PC_REGNUM) */ /* OBSOLETE print_address (addr + *p + 2, stream); */ /* OBSOLETE else */ /* OBSOLETE fprintf_unfiltered (stream, "%d(%s)", *p, REGISTER_NAME (regnum)); */ /* OBSOLETE p += 1; */ /* OBSOLETE break; */ /* OBSOLETE */ /* OBSOLETE case 13: /* Register + Word Displacement Deferred Mode *x/ */ /* OBSOLETE fputc_unfiltered ('*', stream); */ /* OBSOLETE case 12: /* Register + Word Displacement Mode *x/ */ /* OBSOLETE temp1 = *p; */ /* OBSOLETE temp1 <<= 8; */ /* OBSOLETE temp1 |= *(p + 1); */ /* OBSOLETE if (regnum == PC_REGNUM) */ /* OBSOLETE print_address (addr + temp1 + 3, stream); */ /* OBSOLETE else */ /* OBSOLETE fprintf_unfiltered (stream, "%d(%s)", temp1, REGISTER_NAME (regnum)); */ /* OBSOLETE p += 2; */ /* OBSOLETE break; */ /* OBSOLETE */ /* OBSOLETE case 15: /* Register + Long Displacement Deferred Mode *x/ */ /* OBSOLETE fputc_unfiltered ('*', stream); */ /* OBSOLETE case 14: /* Register + Long Displacement Mode *x/ */ /* OBSOLETE temp1 = *p; */ /* OBSOLETE temp1 <<= 8; */ /* OBSOLETE temp1 |= *(p + 1); */ /* OBSOLETE temp1 <<= 8; */ /* OBSOLETE temp1 |= *(p + 2); */ /* OBSOLETE temp1 <<= 8; */ /* OBSOLETE temp1 |= *(p + 3); */ /* OBSOLETE if (regnum == PC_REGNUM) */ /* OBSOLETE print_address (addr + temp1 + 5, stream); */ /* OBSOLETE else */ /* OBSOLETE fprintf_unfiltered (stream, "%d(%s)", temp1, REGISTER_NAME (regnum)); */ /* OBSOLETE p += 4; */ /* OBSOLETE } */ /* OBSOLETE */ /* OBSOLETE return (unsigned char *) p; */ /* OBSOLETE } */