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Diffstat (limited to 'gdb/tahoe-pinsn.c')
| -rw-r--r-- | gdb/tahoe-pinsn.c | 234 |
1 files changed, 0 insertions, 234 deletions
diff --git a/gdb/tahoe-pinsn.c b/gdb/tahoe-pinsn.c deleted file mode 100644 index 4016b3b..0000000 --- a/gdb/tahoe-pinsn.c +++ /dev/null @@ -1,234 +0,0 @@ -/* Print instructions for Tahoe target machines, for GDB. - Copyright 1986, 1989, 1991, 1992 Free Software Foundation, Inc. - Contributed by the State University of New York at Buffalo, by the - Distributed Computer Systems Lab, Department of Computer Science, 1991. - -This file is part of GDB. - -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 "defs.h" -#include "symtab.h" -#include "opcode/tahoe.h" - -/* Tahoe instructions are never longer than this. */ -#define MAXLEN 62 - -/* Number of elements in the opcode table. */ -#define NOPCODES (sizeof votstrs / sizeof votstrs[0]) - -static unsigned char *print_insn_arg (); - -/* Print the Tahoe instruction at address MEMADDR in debugged memory, - on STREAM. Returns length of the instruction, in bytes. */ - -int -print_insn (memaddr, stream) - CORE_ADDR memaddr; - GDB_FILE *stream; -{ - unsigned char buffer[MAXLEN]; - register int i; - register unsigned char *p; - register char *d; - - read_memory (memaddr, buffer, MAXLEN); - - for (i = 0; i < NOPCODES; i++) - if (votstrs[i].detail.code == buffer[0] - || votstrs[i].detail.code == *(unsigned short *)buffer) - break; - - /* Handle undefined instructions. */ - if (i == NOPCODES) - { - fprintf_unfiltered (stream, "0%o", buffer[0]); - return 1; - } - - fprintf_unfiltered (stream, "%s", votstrs[i].name); - - /* Point at first byte of argument data, - and at descriptor for first argument. */ - p = buffer + 1 + (votstrs[i].detail.code >= 0x100); - d = votstrs[i].detail.args; - - if (*d) - fputc_unfiltered ('\t', stream); - - while (*d) - { - p = print_insn_arg (d, p, memaddr + (p - buffer), stream); - d += 2; - if (*d) - fprintf_unfiltered (stream, ","); - } - return p - buffer; -} -/*******************************************************************/ -static unsigned char * -print_insn_arg (d, p, addr, stream) - char *d; - register char *p; - CORE_ADDR addr; - GDB_FILE *stream; -{ - int temp1 = 0; - register int regnum = *p & 0xf; - float floatlitbuf; - - if (*d == 'b') - { - if (d[1] == 'b') - fprintf_unfiltered (stream, "0x%x", addr + *p++ + 1); - else - { - - temp1 = *p; - temp1 <<= 8; - temp1 |= *(p + 1); - fprintf_unfiltered (stream, "0x%x", addr + temp1 + 2); - p += 2; - } - } - else - switch ((*p++ >> 4) & 0xf) - { - case 0: - case 1: - case 2: - case 3: /* Literal (short immediate byte) mode */ - if (d[1] == 'd' || d[1] == 'f' || d[1] == 'g' || d[1] == 'h') - { - *(int *)&floatlitbuf = 0x4000 + ((p[-1] & 0x3f) << 4); - fprintf_unfiltered (stream, "$%f", floatlitbuf); - } - else - fprintf_unfiltered (stream, "$%d", p[-1] & 0x3f); - break; - - case 4: /* Indexed */ - p = (char *) print_insn_arg (d, p, addr + 1, stream); - fprintf_unfiltered (stream, "[%s]", reg_names[regnum]); - break; - - case 5: /* Register */ - fprintf_unfiltered (stream, reg_names[regnum]); - break; - - case 7: /* Autodecrement */ - fputc_unfiltered ('-', stream); - case 6: /* Register deferred */ - fprintf_unfiltered (stream, "(%s)", reg_names[regnum]); - break; - - case 9: /* Absolute Address & Autoincrement deferred */ - fputc_unfiltered ('*', stream); - if (regnum == PC_REGNUM) - { - temp1 = *p; - temp1 <<= 8; - temp1 |= *(p +1); - - fputc_unfiltered ('$', stream); - print_address (temp1, stream); - p += 4; - break; - } - case 8: /*Immediate & Autoincrement SP */ - if (regnum == 8) /*88 is Immediate Byte Mode*/ - fprintf_unfiltered (stream, "$%d", *p++); - - else if (regnum == 9) /*89 is Immediate Word Mode*/ - { - temp1 = *p; - temp1 <<= 8; - temp1 |= *(p +1); - fprintf_unfiltered (stream, "$%d", temp1); - p += 2; - } - - else if (regnum == PC_REGNUM) /*8F is Immediate Long Mode*/ - { - temp1 = *p; - temp1 <<=8; - temp1 |= *(p +1); - temp1 <<=8; - temp1 |= *(p +2); - temp1 <<= 8; - temp1 |= *(p +3); - fprintf_unfiltered (stream, "$%d", temp1); - p += 4; - } - - else /*8E is Autoincrement SP Mode*/ - fprintf_unfiltered (stream, "(%s)+", reg_names[regnum]); - break; - - case 11: /* Register + Byte Displacement Deferred Mode*/ - fputc_unfiltered ('*', stream); - case 10: /* Register + Byte Displacement Mode*/ - if (regnum == PC_REGNUM) - print_address (addr + *p + 2, stream); - else - fprintf_unfiltered (stream, "%d(%s)", *p, reg_names[regnum]); - p += 1; - break; - - case 13: /* Register + Word Displacement Deferred Mode*/ - fputc_unfiltered ('*', stream); - case 12: /* Register + Word Displacement Mode*/ - temp1 = *p; - temp1 <<= 8; - temp1 |= *(p +1); - if (regnum == PC_REGNUM) - print_address (addr + temp1 + 3, stream); - else - fprintf_unfiltered (stream, "%d(%s)", temp1, reg_names[regnum]); - p += 2; - break; - - case 15: /* Register + Long Displacement Deferred Mode*/ - fputc_unfiltered ('*', stream); - case 14: /* Register + Long Displacement Mode*/ - temp1 = *p; - temp1 <<= 8; - temp1 |= *(p +1); - temp1 <<= 8; - temp1 |= *(p +2); - temp1 <<= 8; - temp1 |= *(p +3); - if (regnum == PC_REGNUM) - print_address (addr + temp1 + 5, stream); - else - fprintf_unfiltered (stream, "%d(%s)", temp1, reg_names[regnum]); - p += 4; - } - - return (unsigned char *) p; -} - - - - - - - - - - - - - |