path: root/gdb/=rt-changes

From: zs01#@andrew.cmu.edu (Zalman Stern)
Date: Sun, 24 May 87 03:20:57 edt
To: rms@prep.ai.mit.edu
Subject: RT diffs for gdb version 2.1

Here are the new files, followed by the diffs to old files. The first file below
is ITCMODS which is my attempt to document some of our changes. Unfortunately,
it has not been maintained particularly well and notably does not include info
about our changes to support the HIGH-C compiler. One big change we put in was
to use a number of initialize routines instead of the "linked list of object
modules" that is used on other machines. The RT object file format appears to
have a variable size header before the code, making it very difficult
(impossible?) to get the initialization stuff to work. If you have any
questions, don't hesitate to send me mail.

-Z-

Only in .: ITCMODS

blockframe.c:
    set_current_frame now takes an extra argument.
    RT specific code for interpreting and caching of trace table entries.
    Added initialize routine.

breakpoint.c:
    Added new_breakpoint_commands flag to prevent incorrect interpretation of command lists containing a continue statement.
    Modified do_breakpoint_commands to know about new_breakpoint_commands.
    Modified clear_breakpoint_commands to set new_breakpoint_commands.
    Added initialize routine.

core.c:
    RT specific code to find the uarea.
    RT specific code to indicate the start of the data segment.
    set_current_frame now takes an extra argument.
    Added initialize routine.

dbxread.c:
    Added support for the Camphor dynamic loading system. (All under #ifdef CAMPHOR).
    Fix for multiple declarations of register variables (i.e. they are declared twice). The fix munges the incorrect declaration (i.e. the one which is not register).
    set_rel_command to set relocation offset for camphor loaded files. (Under #ifdef CAMPHOR).
    add_file_command to append a file's symbols to the current symbol table instead of replacing it. (Under #ifdef CAMPHOR).
    RT specific code to deal with function names being _.foo instead of _foo.
    Added initialize routine.

    Feb 8, 1987 Zalman Stern.
        Added test in symbol_file_command to see if file was compiled with debugging. If not print an error message instead of dumping core.
        Added same test in add_file_command and made it run through BZPATH, CLASSPATH, and PATH in that order (Under #ifdef CAMPHOR).

environ.c:
    Fixed error in calculating new size of a reallocated environment.

eval.c:
    Added initialize routine.

expread.y:
    Moved alloca call out of variable initializations.

findvar.c:
    Added initialize routine.

firstfile.c:
    Added main initialization driver routine.

frame.h:
    Added RT specific declarations to hold frame information, and to deal with trace table caching.

ibm032-pinsn.c:
    New file, contains RT disassembler.

ibm032-opcode.h:
    New file, contains RT opcode definitions.

infcmd.c
    Changed code to use csh instead of sh to avoid the anoyance of the environment bug.
    Added initialize routine.

inflow.c:
    Added initialize routine.

infrun.c:
    set_current_frame now takes an extra argument.
    Added some code to deal with stopping in the middle of a camphor link. (Under #ifdef CAMPHOR).
    Added RT specific code to get the return values from the right registers. Replaces code that was there for RT.
    RT specific code to do a "POP_DUMMY_FRAME." Dummy frames are to store more complete state than a normal frame. Makes calling a function in inferior more reliable. Perhaps this should be expanded to other machine types.
    Added initialize routine.

    Feb 9, 1987 Zalman Stern.
        Added call to select_frame after popping a stack dummy frame in normal_stop. This fixes the bug where you could not print variables without doing a "frame 0" after printing an expression with a function call in it.

iniitialize.h:
    Changed file to use #ifdef's for machine type. Allows one to use same sources for different machines.

m-ibm032.h:
    New file, contains RT specific macros and variables.

param.h:
    Changed file to use #ifdef's for machine type. Allows one to use same sources for different machines.

pinsn.c:
    Changed file to use #ifdef's for machine type. Allows one to use same sources for different machines.

printcmd.c:
    Moved alloca calls out of variable initialization.
    Added initialize routine.

source.c:
    Added initialize routine.

stack.c:
    Added initialize routine.

symmisc.c:
    Added initialize routine.

symtab.c:
    RT specific code to deal with function names being _.foo instead of _foo.
    Added initialize routine.

utils.c:
    Added comment.

valarith.c:
    Added initialize routine.

valops.c:
    Added initialize routine.

valprint.c:
    Added initialize routine.

values.c:
    Added initialize routine.

Only in .: ibm032-opcode.h

/* The opcode table consists of a 256 element array containing an
 * instruction mnemonic and an instruction type field. This can be
 * indexed directly by the first eight bits of an RT instruction.
 * The instruction type consists of a type field and some flags. 
 * In addition to this, there is an ifdef'd out "instruction" table
 * at the end of the file. This is an alphabetical listing of the instructions
 * containing mnemonic, opcode, and type. This is useful for modification
 * purposes. There is also some code in the ifdef to convert the
 * instruction table into an opcode table.
 */

/* Various useful bit masks. */
#define ibm032_typeMask		0x0f /* Mask to get actual type info out of instruction type. */
#define LOW4			0x0f
#define HIGH4			0xf0
#define LOW16			0x0000ffff
#define HIGH16			0xffff0000
#define LOW20			0x000fffff
#define LOW24			0x00ffffff

/* Instruction types consist of a type id in the low 4 bits and flags above that. */

/* Flags. */
#define ibm032_conditional 	0x10
#define ibm032_negative		0x20

/* Format types. */
#define ibm032_JI	0x0	/* Jump immediate. */
#define ibm032_X	0x1	/* ??? */

/* These next ones are in a special bit position. Do not change their defines. */
#define ibm032_DS0	0x2	/* Data short with no shift for immediate value. */
#define ibm032_DS1	0x3	/* Data short with 1 bit shift for immediate value. */
#define ibm032_DS2	0x4	/* Data short with 2 bit shift for immediate value */
#define ibm032_DSShiftOffset	ibm032_DS0 /* Offset to get shift value from ibm032_DS? types. */

#define ibm032_RR	0x5	/* R format where second argument is a register */
#define ibm032_RI	0x6	/* R format where second argument is 4 bit immediate. */
#define ibm032_BI	0x7	/* Branch immediate. */
#define ibm032_BA	0x8	/* Branch absolute. */
#define ibm032_D	0x9	/* Data. */

/* What an instruction looks like. */
struct ibm032_opcode {
    char *mnemonic; /* the name. NULL indicates illegal instruction. */
    int type; /* See above. */
};

#define MAXOPCODES 256 /* Pretty well hardwired. */

#ifndef BUILDTABLE
/* The actual data. */
struct ibm032_opcode ibm032_opcodes[] = {
    {"j%s",		ibm032_JI | ibm032_conditional | ibm032_negative},
    {"j%s",		ibm032_JI | ibm032_conditional | ibm032_negative},
    {"j%s",		ibm032_JI | ibm032_conditional | ibm032_negative},
    {"j%s",		ibm032_JI | ibm032_conditional | ibm032_negative},
    {"j%s",		ibm032_JI | ibm032_conditional | ibm032_negative},
    {"j%s",		ibm032_JI | ibm032_conditional | ibm032_negative},
    {"j%s",		ibm032_JI | ibm032_conditional | ibm032_negative},
    {"j%s",		ibm032_JI | ibm032_conditional | ibm032_negative},
    {"j%s",		ibm032_JI | ibm032_conditional},
    {"j%s",		ibm032_JI | ibm032_conditional},
    {"j%s",		ibm032_JI | ibm032_conditional},
    {"j%s",		ibm032_JI | ibm032_conditional},
    {"j%s",		ibm032_JI | ibm032_conditional},
    {"j%s",		ibm032_JI | ibm032_conditional},
    {"j%s",		ibm032_JI | ibm032_conditional},
    {"j%s",		ibm032_JI | ibm032_conditional},
    {"stcs",		ibm032_DS0},
    {"stcs",		ibm032_DS0},
    {"stcs",		ibm032_DS0},
    {"stcs",		ibm032_DS0},
    {"stcs",		ibm032_DS0},
    {"stcs",		ibm032_DS0},
    {"stcs",		ibm032_DS0},
    {"stcs",		ibm032_DS0},
    {"stcs",		ibm032_DS0},
    {"stcs",		ibm032_DS0},
    {"stcs",		ibm032_DS0},
    {"stcs",		ibm032_DS0},
    {"stcs",		ibm032_DS0},
    {"stcs",		ibm032_DS0},
    {"stcs",		ibm032_DS0},
    {"stcs",		ibm032_DS0},
    {"sths",		ibm032_DS1},
    {"sths",		ibm032_DS1},
    {"sths",		ibm032_DS1},
    {"sths",		ibm032_DS1},
    {"sths",		ibm032_DS1},
    {"sths",		ibm032_DS1},
    {"sths",		ibm032_DS1},
    {"sths",		ibm032_DS1},
    {"sths",		ibm032_DS1},
    {"sths",		ibm032_DS1},
    {"sths",		ibm032_DS1},
    {"sths",		ibm032_DS1},
    {"sths",		ibm032_DS1},
    {"sths",		ibm032_DS1},
    {"sths",		ibm032_DS1},
    {"sths",		ibm032_DS1},
    {"sts",		ibm032_DS2},
    {"sts",		ibm032_DS2},
    {"sts",		ibm032_DS2},
    {"sts",		ibm032_DS2},
    {"sts",		ibm032_DS2},
    {"sts",		ibm032_DS2},
    {"sts",		ibm032_DS2},
    {"sts",		ibm032_DS2},
    {"sts",		ibm032_DS2},
    {"sts",		ibm032_DS2},
    {"sts",		ibm032_DS2},
    {"sts",		ibm032_DS2},
    {"sts",		ibm032_DS2},
    {"sts",		ibm032_DS2},
    {"sts",		ibm032_DS2},
    {"sts",		ibm032_DS2},
    {"lcs",		ibm032_DS0},
    {"lcs",		ibm032_DS0},
    {"lcs",		ibm032_DS0},
    {"lcs",		ibm032_DS0},
    {"lcs",		ibm032_DS0},
    {"lcs",		ibm032_DS0},
    {"lcs",		ibm032_DS0},
    {"lcs",		ibm032_DS0},
    {"lcs",		ibm032_DS0},
    {"lcs",		ibm032_DS0},
    {"lcs",		ibm032_DS0},
    {"lcs",		ibm032_DS0},
    {"lcs",		ibm032_DS0},
    {"lcs",		ibm032_DS0},
    {"lcs",		ibm032_DS0},
    {"lcs",		ibm032_DS0},
    {"lhas",		ibm032_DS1},
    {"lhas",		ibm032_DS1},
    {"lhas",		ibm032_DS1},
    {"lhas",		ibm032_DS1},
    {"lhas",		ibm032_DS1},
    {"lhas",		ibm032_DS1},
    {"lhas",		ibm032_DS1},
    {"lhas",		ibm032_DS1},
    {"lhas",		ibm032_DS1},
    {"lhas",		ibm032_DS1},
    {"lhas",		ibm032_DS1},
    {"lhas",		ibm032_DS1},
    {"lhas",		ibm032_DS1},
    {"lhas",		ibm032_DS1},
    {"lhas",		ibm032_DS1},
    {"lhas",		ibm032_DS1},
    {"cas",		ibm032_X},
    {"cas",		ibm032_X},
    {"cas",		ibm032_X},
    {"cas",		ibm032_X},
    {"cas",		ibm032_X},
    {"cas",		ibm032_X},
    {"cas",		ibm032_X},
    {"cas",		ibm032_X},
    {"cas",		ibm032_X},
    {"cas",		ibm032_X},
    {"cas",		ibm032_X},
    {"cas",		ibm032_X},
    {"cas",		ibm032_X},
    {"cas",		ibm032_X},
    {"cas",		ibm032_X},
    {"cas",		ibm032_X},
    {"ls",		ibm032_DS2},
    {"ls",		ibm032_DS2},
    {"ls",		ibm032_DS2},
    {"ls",		ibm032_DS2},
    {"ls",		ibm032_DS2},
    {"ls",		ibm032_DS2},
    {"ls",		ibm032_DS2},
    {"ls",		ibm032_DS2},
    {"ls",		ibm032_DS2},
    {"ls",		ibm032_DS2},
    {"ls",		ibm032_DS2},
    {"ls",		ibm032_DS2},
    {"ls",		ibm032_DS2},
    {"ls",		ibm032_DS2},
    {"ls",		ibm032_DS2},
    {"ls",		ibm032_DS2},
    {0,			0},
    {0,			0},
    {0,			0},
    {0,			0},
    {0,			0},
    {0,			0},
    {0,			0},
    {0,			0},
    {"b%s",		ibm032_BI | ibm032_conditional | ibm032_negative},
    {"b%sx",		ibm032_BI | ibm032_conditional | ibm032_negative},
    {"bala",		ibm032_BA},
    {"balax",		ibm032_BA},
    {"bali",		ibm032_BI},
    {"balix",		ibm032_BI},
    {"b%s",		ibm032_BI | ibm032_conditional},
    {"b%sx",		ibm032_BI | ibm032_conditional},
    {"ais",		ibm032_RI},
    {"inc",		ibm032_RI},
    {"sis",		ibm032_RI},
    {"dec",		ibm032_RI},
    {"cis",		ibm032_RI},
    {"clrsb",		ibm032_RI},
    {"mfs",		ibm032_RR},
    {"setsb",		ibm032_RI},
    {"clrbu",		ibm032_RI},
    {"clrbl",		ibm032_RI},
    {"setbu",		ibm032_RI},
    {"setbl",		ibm032_RI},
    {"mftbiu",		ibm032_RI},
    {"mftbil",		ibm032_RI},
    {"mttbiu",		ibm032_RI},
    {"mttbil",		ibm032_RI},
    {"sari",		ibm032_RI},
    {"sari16",		ibm032_RI},
    {0,			0},
    {0,			0},
    {"lis",		ibm032_RI},
    {0,			0},
    {0,			0},
    {0,			0},
    {"sri",		ibm032_RI},
    {"sri16",		ibm032_RI},
    {"sli",		ibm032_RI},
    {"sli16",		ibm032_RI},
    {"srpi",		ibm032_RI},
    {"srpi16",		ibm032_RI},
    {"slpi",		ibm032_RI},
    {"slpi16",		ibm032_RI},
    {"sar",		ibm032_RR},
    {"exts",		ibm032_RR},
    {"sf",		ibm032_RR},
    {"cl",		ibm032_RR},
    {"c",		ibm032_RR},
    {"mts",		ibm032_RR},
    {"d",		ibm032_RR},
    {0,			0},
    {"sr",		ibm032_RR},
    {"srp",		ibm032_RR},
    {"sl",		ibm032_RR},
    {"slp",		ibm032_RR},
    {"mftb",		ibm032_RR},
    {"tgte",		ibm032_RR},
    {"tlt",		ibm032_RR},
    {"mttb",		ibm032_RR},
    {"svc",		ibm032_D},
    {"ai",		ibm032_D},
    {"cal16",		ibm032_D},
    {"oiu",		ibm032_D},
    {"oil",		ibm032_D},
    {"nilz",		ibm032_D},
    {"nilo",		ibm032_D},
    {"xil",		ibm032_D},
    {"cal",		ibm032_D},
    {"lm",		ibm032_D},
    {"lha",		ibm032_D},
    {"ior",		ibm032_D},
    {"ti",		ibm032_D},
    {"l",		ibm032_D},
    {"lc",		ibm032_D},
    {"tsh",		ibm032_D},
    {"lps",		ibm032_D},
    {"aei",		ibm032_D},
    {"sfi",		ibm032_D},
    {"cli",		ibm032_D},
    {"ci",		ibm032_D},
    {"niuz",		ibm032_D},
    {"niuo",		ibm032_D},
    {"xiu",		ibm032_D},
    {"cau",		ibm032_D},
    {"stm",		ibm032_D},
    {"lh",		ibm032_D},
    {"iow",		ibm032_D},
    {"sth",		ibm032_D},
    {"st",		ibm032_D},
    {"stc",		ibm032_D},
    {0,			0},
    {"abs",		ibm032_RR},
    {"a",		ibm032_RR},
    {"s",		ibm032_RR},
    {"o",		ibm032_RR},
    {"twoc",		ibm032_RR},
    {"n",		ibm032_RR},
    {"m",		ibm032_RR},
    {"x",		ibm032_RR},
    {"b%sr",		ibm032_RR | ibm032_conditional | ibm032_negative},
    {"b%srx",		ibm032_RR | ibm032_conditional | ibm032_negative},
    {0,			0},
    {"lhs",		ibm032_RR},
    {"balr",		ibm032_RR},
    {"balrx",		ibm032_RR},
    {"b%sr",		ibm032_RR | ibm032_conditional},
    {"b%srx",		ibm032_RR | ibm032_conditional},
    {"wait",		ibm032_RR},
    {"ae",		ibm032_RR},
    {"se",		ibm032_RR},
    {"ca16",		ibm032_RR},
    {"onec",		ibm032_RR},
    {"clz",		ibm032_RR},
    {0,			0},
    {0,			0},
    {0,			0},
    {"mc03",		ibm032_RR},
    {"mc13",		ibm032_RR},
    {"mc23",		ibm032_RR},
    {"mc33",		ibm032_RR},
    {"mc30",		ibm032_RR},
    {"mc31",		ibm032_RR},
    {"mc32",		ibm032_RR},
};

#else
struct ibm032_opcode ibm032_opcodes[MAXOPCODES];

struct ibm032_instruction {
    char *mnemonic; /* Mnemonic for this instruction */
    char opcode; /* Numerical value of opcode. */
    int type; /* This instructions format. */
};

struct ibm032_instruction ibm032_instructions[] =
{
 {"a",		0xe1, ibm032_RR},
 {"abs",	0xe0, ibm032_RR},
 {"ae",		0xf1, ibm032_RR},
 {"aei",	0xd1, ibm032_D},
 {"ai",		0xc1, ibm032_D},
 {"ais",	0x90, ibm032_RI},
 {"bala",	0x8a, ibm032_BA},
 {"balax",	0x8b, ibm032_BA},
 {"bali",	0x8c, ibm032_BI},
 {"balix",	0x8d, ibm032_BI},
 {"balr",	0xec, ibm032_RR},
 {"balrx",	0xed, ibm032_RR},
 {"b%s",	0x8e, ibm032_BI | ibm032_conditional},
 {"b%sr",	0xee, ibm032_RR | ibm032_conditional},
 {"b%srx",	0xef, ibm032_RR | ibm032_conditional},
 {"b%sx",	0x8f, ibm032_BI | ibm032_conditional},
 {"b%s",	0x88, ibm032_BI | ibm032_conditional | ibm032_negative},
 {"b%sr",	0xe8, ibm032_RR | ibm032_conditional | ibm032_negative},
 {"b%srx",	0xe9, ibm032_RR | ibm032_conditional | ibm032_negative},
 {"b%sx",	0x89, ibm032_BI | ibm032_conditional | ibm032_negative},
 {"c",		0xb4, ibm032_RR},
 {"cal",	0xc8, ibm032_D},
 {"cal16",	0xc2, ibm032_D},
 {"cas",	0x60, ibm032_X},
 {"cau",	0xd8, ibm032_D},
 {"ca16",	0xf3, ibm032_RR},
 {"ci",		0xd4, ibm032_D},
 {"cis",	0x94, ibm032_RI},
 {"cl",		0xb3, ibm032_RR},
 {"cli",	0xd3, ibm032_D},
 {"clrbl",	0x99, ibm032_RI},
 {"clrbu",	0x98, ibm032_RI},
 {"clrsb",	0x95, ibm032_RI},
 {"clz",	0xf5, ibm032_RR},
 {"d",		0xb6, ibm032_RR},
 {"dec",	0x93, ibm032_RI},
 {"exts",	0xb1, ibm032_RR},
 {"inc",	0x91, ibm032_RI},
 {"ior",	0xcb, ibm032_D},
 {"iow",	0xdb, ibm032_D},

 {"j%s",	0x08, ibm032_JI | ibm032_conditional},
 {"j%s",	0x00, ibm032_JI | ibm032_conditional | ibm032_negative},

 {"l",		0xcd, ibm032_D},
 {"lc",		0xce, ibm032_D},
 {"lcs",	0x40, ibm032_DS0},
 {"lh",		0xda, ibm032_D},
 {"lha",	0xca, ibm032_D},
 {"lhas",	0x50, ibm032_DS1},
 {"lhs",	0xeb, ibm032_RR},
 {"lis",	0xa4, ibm032_RI},
 {"lm",		0xc9, ibm032_D},
 {"lps",	0xd0, ibm032_D},
 {"ls",		0x70, ibm032_DS2},
 {"m",		0xe6, ibm032_RR},
 {"mc03",	0xf9, ibm032_RR},
 {"mc13",	0xfa, ibm032_RR},
 {"mc23",	0xfb, ibm032_RR},
 {"mc33",	0xfc, ibm032_RR},
 {"mc30",	0xfd, ibm032_RR},
 {"mc31",	0xfe, ibm032_RR},
 {"mc32",	0xff, ibm032_RR},
 {"mfs",	0x96, ibm032_RR},
 {"mftb",	0xbc, ibm032_RR},
 {"mftbil",	0x9d, ibm032_RI},
 {"mftbiu",	0x9c, ibm032_RI},
 {"mts",	0xb5, ibm032_RR},
 {"mttb",	0xbf, ibm032_RR},
 {"mttbil",	0x9f, ibm032_RI},
 {"mttbiu",	0x9e, ibm032_RI},
 {"n",		0xe5, ibm032_RR},

 {"nilo",	0xc6, ibm032_D},
 {"nilz",	0xc5, ibm032_D},
 {"niuo",	0xd6, ibm032_D},
 {"niuz",	0xd5, ibm032_D},
 {"o",		0xe3, ibm032_RR},
 {"oil",	0xc4, ibm032_D},
 {"oiu",	0xc3, ibm032_D},
 {"onec",	0xf4, ibm032_RR},
 {"s",		0xe2, ibm032_RR},
 {"sar",	0xb0, ibm032_RR},
 {"sari",	0xa0, ibm032_RI},
 {"sari16",	0xa1, ibm032_RI},
 {"se",		0xf2, ibm032_RR},
 {"setbl",	0x9b, ibm032_RI},
 {"setbu",	0x9a, ibm032_RI},
 {"setsb",	0x97, ibm032_RI},
 {"sf",		0xb2, ibm032_RR},

 {"sfi",	0xd2, ibm032_D},

 {"sis",	0x92, ibm032_RI},
 {"sl",		0xba, ibm032_RR},
 {"sli",	0xaa, ibm032_RI},
 {"sli16",	0xab, ibm032_RI},
 {"slp",	0xbb, ibm032_RR},
 {"slpi",	0xae, ibm032_RI},
 {"slpi16",	0xaf, ibm032_RI},
 {"sr",		0xb8, ibm032_RR},
 {"sri",	0xa8, ibm032_RI},
 {"sri16",	0xa9, ibm032_RI},
 {"srp",	0xb9, ibm032_RR},
 {"srpi",	0xac, ibm032_RI},
 {"srpi16",	0xad, ibm032_RI},

 {"st",		0xdd, ibm032_D},

 {"stc",	0xde, ibm032_D},
 {"stcs",	0x10, ibm032_DS0},
 {"sth",	0xdc, ibm032_D},
 {"sths",	0x20, ibm032_DS1},
 {"stm",	0xd9, ibm032_D},
 {"sts",	0x30, ibm032_DS2},
 {"svc",	0xc0, ibm032_D},
 {"tgte",	0xbd, ibm032_RR},
 {"ti",		0xcc, ibm032_D},
 {"tlt",	0xbe, ibm032_RR},
 {"tsh",	0xcf, ibm032_D},
 {"twoc",	0xe4, ibm032_RR},
 {"wait",	0xf0, ibm032_RR},
 {"x",		0xe7, ibm032_RR},
 {"xil",	0xc7, ibm032_D},
 {"xiu",	0xd7, ibm032_D}
};

/* Code to generate the packed opcode table from the instructions table. */

#include <stdio.h>

char *typeNames[] = {
    "ibm032_JI",
    "ibm032_X",
    "ibm032_DS0",
    "ibm032_DS1",
    "ibm032_DS2",
    "ibm032_RR",
    "ibm032_RI",
    "ibm032_BI",
    "ibm032_BA",
    "ibm032_D"
};

main()
{

    int i, j, opcode, type;

    for (j = (sizeof(ibm032_instructions) / sizeof(struct ibm032_instruction)); j >= 0; j--) {
        opcode = ibm032_instructions[j].opcode;
        switch (ibm032_instructions[j].type & ibm032_typeMask) {
            case ibm032_JI:
                i = 7;
                break;
            case ibm032_X:
            case ibm032_DS0:
            case ibm032_DS1:
            case ibm032_DS2:
                i = 15;
                break;
            case ibm032_RR:
            case ibm032_RI:
            default:
                i = 0;
                break;
        }
        for (;i >= 0; i--) {
            ibm032_opcodes[opcode + i].mnemonic = ibm032_instructions[j].mnemonic;
            ibm032_opcodes[opcode + i].type = ibm032_instructions[j].type;
        }
    }

    printf("struct ibm032_opcode ibm032_opcodes[] = {\n");
    for ( j = 0; j < 256; j++) {
        type = ibm032_opcodes[j].type;      
        if (ibm032_opcodes[j].mnemonic != NULL)
            printf("    {\"%s\",\t\t%s%s%s},\n", ibm032_opcodes[j].mnemonic,
                   typeNames[type & ibm032_typeMask],
                   (type & ibm032_conditional) ? " | ibm032_conditional" : "",
                   (type & ibm032_negative) ? " | ibm032_negative" : "");
        else
            printf("    {0,\t\t\t0},\n");
    }
    printf("};\n");
}
#endif /* BUILDTABLE */

Only in .: ibm032-pinsn.c

/* Print ibm032 instructions for GDB, the GNU debugger.
   Copyright (C) 1986 Free Software Foundation, Inc.

GDB is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY.  No author or distributor accepts responsibility to anyone
for the consequences of using it or for whether it serves any
particular purpose or works at all, unless he says so in writing.
Refer to the GDB General Public License for full details.

Everyone is granted permission to copy, modify and redistribute GDB,
but only under the conditions described in the GDB General Public
License.  A copy of this license is supposed to have been given to you
along with GDB so you can know your rights and responsibilities.  It
should be in a file named COPYING.  Among other things, the copyright
notice and this notice must be preserved on all copies.

In other words, go ahead and share GDB, but don't try to stop
anyone else from sharing it farther.  Help stamp out software hoarding!
*/

#include <stdio.h>

#include "defs.h"
#include "param.h"
#include "symtab.h"
#include "ibm032-opcode.h"

/* ibm032 instructions are never longer than this many bytes.  */
#define MAXLEN 4

extern char *reg_names[];

static char *mapCondition();


/* Print the ibm032 instruction at address MEMADDR in debugged memory,
   on STREAM.  Returns length of the instruction, in bytes.  */

int
print_insn (memaddr, stream)
     CORE_ADDR memaddr;
     FILE *stream;
{
  unsigned char buffer[MAXLEN];
  int opcodeIndex, instructionBits, type;
  char *mnemonic;

  read_memory (memaddr, buffer, MAXLEN);
  instructionBits = (buffer[0] << 24) + (buffer[1] << 16) + (buffer[2] << 8) + buffer[3]; /* Get it into an int for easy use. */

  if ((mnemonic = ibm032_opcodes[opcodeIndex = buffer[0]].mnemonic) == NULL)
    {
      fprintf (stream, "0%o", (instructionBits & HIGH16) >> 16);
      return 2;
    }
  type = ibm032_opcodes[opcodeIndex].type;
  if (!(type & ibm032_conditional)) {
    fprintf (stream, "%s", mnemonic);

    switch (type) {

      int displacement; /* Used for sign extensions. */
      char *sign;

      case ibm032_X:
        fprintf(stream, "\t%s, %s(%s)", reg_names[buffer[0] & LOW4], (buffer[1] & HIGH4) ? (reg_names[(buffer[1] & HIGH4) >> 4]) : "", reg_names[buffer[1] & LOW4]);
        return 2;
      case ibm032_DS0:
      case ibm032_DS1:
      case ibm032_DS2:
        fprintf(stream, "\t%s, %x", reg_names[(buffer[1] & HIGH4) >> 4], (buffer[0] & LOW4) << (ibm032_opcodes[opcodeIndex].type - ibm032_DSShiftOffset)); /* Hacked to shift imediate field. */
        if (buffer[1] & LOW4)
          fprintf(stream, "(%s)", reg_names[buffer[1] & LOW4]);
        return 2;
      case ibm032_RR:
        fprintf(stream, "\t%s, %s", reg_names[(buffer[1] & HIGH4) >> 4], reg_names[buffer[1] & 0x0f]);
        return 2;
      case ibm032_RI:
        fprintf(stream, "\t%s, %x", reg_names[(buffer[1] & HIGH4) >> 4], buffer[1] & LOW4);
        return 2;
      case ibm032_BI:
        fprintf(stream, "\t%s, ", reg_names[(buffer[1] & HIGH4) >> 4]);
        displacement = (instructionBits & LOW20);
        if ((displacement & (1 << 19)) != 0) /* Cover sign extension. */
            displacement |= 0xfff00000;
        print_address(memaddr + (displacement * 2), stream); /* Need sign extension. */
        return 4;
      case ibm032_BA:
        print_address((instructionBits & LOW24) & ~1, stream);
        return 4;
      case ibm032_D:
        displacement = (instructionBits & LOW16);
        if ((displacement & (1 << 15)) != 0) { /* Cover sign extension. */
          displacement = - (displacement | 0xffff0000);
          sign = "-";
        }
        else
          sign = "";
        fprintf(stream, "\t%s, %s, %s%x", reg_names[(buffer[1] & HIGH4) >> 4], reg_names[buffer[1] & LOW4], sign, displacement);
        return 4;
    }
  }
  else { /* Conditional branches are hacked. */
    switch (type & 0x0f) {

      int displacement;

      case ibm032_JI:
        fprintf(stream, ibm032_opcodes[opcodeIndex].mnemonic, mapCondition(type & ibm032_negative, buffer[0] & LOW4));
      putc('\t', stream);
      print_address((buffer[1] << 1) + memaddr, stream);
      return 2;
    case ibm032_BI:
      fprintf(stream, ibm032_opcodes[opcodeIndex].mnemonic, mapCondition(type & ibm032_negative, (buffer[1] & HIGH4) >> 4));
      putc('\t', stream);
        displacement = (instructionBits & LOW20);
        if ((displacement & (1 << 19)) != 0) /* Cover sign extension. */
            displacement |= 0xfff00000;
        print_address((displacement * 2) + memaddr, stream);
      return 4;
    case ibm032_RR:
      fprintf(stream, ibm032_opcodes[opcodeIndex].mnemonic, mapCondition(type & ibm032_negative, (buffer[1] & HIGH4) >> 4));
      fprintf(stream, "\t%s", reg_names[buffer[1] & LOW4]);
      return 2;   
    }
  }
}

/* Converts a 4 bit "conditional specifier" into a semi-meaningful name. */
static char *mapCondition(negative, conditionBits)
    int conditionBits;
{

    char *condition;

    if (negative)
        switch (conditionBits) {
            case 0x8:
                condition = "";
                break;
            case 0x9:
                condition = "ge";
                break;
            case 0xa:
                condition = "ne";
                break;
            case 0xb:
                condition = "le";
                break;
            case 0xc:
                condition = "nc";
                break;
            case 0xd: /* Reserved. */
                condition = "notbogus";
                break;
            case 0xe:
                 condition = "no";
                break;
            case 0xf:
                condition = "ntb";
                break;
            default:
                condition = "notbogus";
                break;
        }
    else
        switch (conditionBits) {
            case 0x8:
                condition = "nop";
                break;
            case 0x9:
                condition = "lt";
                break;
            case 0xa:
                condition = "eq";
                break;
            case 0xb:
                condition = "gt";
                break;
            case 0xc:
                condition = "c";
                break;
            case 0xd: /* Reserved. */
                condition = "bogus";
                break;
            case 0xe:
                condition = "o";
                break;
            case 0xf:
                condition = "tb";
                break;
            default:
                condition = "bogus";
                break;
        }
    return condition;
}

Only in .: m-ibm032.h

/* Parameters for execution on an IBM RT, for GDB, the GNU debugger.
   Copyright (C) 1986 Free Software Foundation, Inc.

GDB is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY.  No author or distributor accepts responsibility to anyone
for the consequences of using it or for whether it serves any
particular purpose or works at all, unless he says so in writing.
Refer to the GDB General Public License for full details.

Everyone is granted permission to copy, modify and redistribute GDB,
but only under the conditions described in the GDB General Public
License.  A copy of this license is supposed to have been given to you
along with GDB so you can know your rights and responsibilities.  It
should be in a file named COPYING.  Among other things, the copyright
notice and this notice must be preserved on all copies.

In other words, go ahead and share GDB, but don't try to stop
anyone else from sharing it farther.  Help stamp out software hoarding!
*/

/* Define this if the C compiler puts an underscore at the front
   of external names before giving them to the linker.  */

#define NAMES_HAVE_UNDERSCORE

/* Offset from address of function to start of its code.
   Zero on most machines.  */

#define FUNCTION_START_OFFSET 0

/* Advance PC across any function entry prologue instructions
   to reach some "real" code.  */

#define SKIP_PROLOGUE(pc)   \
{ register int op = read_memory_integer (pc, 1) & 0x00ff; \
    if (op == 0xd9) { \
	pc += 4; \
	op = read_memory_integer (pc, 2); \
	if ((op & 0xff00) == 0xc100) { /* pcc prolog add r1, number */ \
	    pc += 4; \
	    op = read_memory_integer (pc, 1) & 0x00ff; \
	    if (op == 0x6e) { 			/* cas r14, 0 */ \
		pc += 2; \
		op = read_memory_integer (pc, 2) & 0xffff; \
		if (op == 0xc8d1) pc += 4; /* cal r13, junk(r1) */ \
	    } \
	} \
	else if ((op & 0xffff) == 0x6e00) { /* hc prolog cas r14, 0 */ \
	    pc += 4; \
	    op = read_memory_integer(pc, 1) & 0xff; \
	    if (op == 0x6d) { /* cas r13 junk, probably */ \
		pc += 2; \
		op = read_memory_integer(pc, 2) & 0xffff; \
		if (op == 0xc811) pc += 4; /* cal r1,  foo(r1) */	\
	    } \
	} \
    } \
    while (1) { \
	/* now watch for st, sth, stc, and short versions thereof, cas instructions and exts */ \
	/* which are all used to store the parameters from r2-r5 onto the stack or into reg vars */ \
	op = read_memory_integer (pc, 2); \
	if ((op & 0xff00) == 0x3000 && (op & 0xf0) >= 0x20 && (op & 0xf0) <= 0x50) pc += 2; \
	else if ((op & 0xff00) == 0x2300 && (op & 0xf0) >= 0x20 && (op & 0xf0) <= 0x50) pc += 2; \
	else if ((op & 0xff00) == 0x1b00 && (op & 0xf0) >= 0x20 && (op & 0xf0) <= 0x50) pc += 2; \
	else if ((op & 0xff00) == 0x6c00 && (op & 0xf0) >= 0x20 && (op & 0xf0) <= 0x50) pc += 2; \
	else if ((op & 0xff00) == 0xb100) pc += 2; /* extend sign */ \
	else if ((op & 0xff00) == 0xdd00 && (op & 0xf0) >= 0x20 && (op & 0xf0) <= 0x50) pc += 4; \
	else break; \
    } \
}

/* Immediately after a function call, return the saved pc.
   Can't go through the frames for this because on some machines
   the new frame is not set up until the new function executes
   some instructions.  */

#define SAVED_PC_AFTER_CALL(frame) \
read_register (15)

/* This is the amount to subtract from u.u_ar0
   to get the offset in the core file of the register values.  */

#define KERNEL_U_ADDR (0x20000000 - NBPG * (UPAGES))

/* Address of end of stack space.  */

/* extra page is for the "red zone" */
#define STACK_END_ADDR (0x20000000 - NBPG * (UPAGES+1))

/* Stack grows downward.  */

#define INNER_THAN <

/* Sequence of bytes for breakpoint instruction.  */

#define BREAKPOINT {0xbd, 0x00}

/* Amount PC must be decremented by after a breakpoint.
   This is often the number of bytes in BREAKPOINT
   but not always.  */

#define DECR_PC_AFTER_BREAK 0

/* Nonzero if instruction at PC is a return instruction.  */

#define ABOUT_TO_RETURN(pc) (read_memory_integer (pc, 1) & 0x00ff == 0xc9)

/* Return 1 if P points to an invalid floating point value.  */

#define INVALID_FLOAT(p) 0   /* Just a first guess; not checked */

/* Say how long (ordinary) registers are.  */

#define REGISTER_TYPE long

/* Number of machine registers */

#define NUM_REGS 18

/* Initializer for an array of names of registers.
   There should be NUM_REGS strings in this initializer.  */

#define REGISTER_NAMES {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", "iar", "mq"}

/* Register numbers of various important registers.
   Note that some of these values are "real" register numbers,
   and correspond to the general registers of the machine,
   and some are "phony" register numbers which are too large
   to be actual register numbers as far as the user is concerned
   but do serve to get the desired values when passed to read_register.  */

#define FP_REGNUM 13		/* Contains address of executing stack frame */
#define SP_REGNUM 1		/* Contains address of top of stack */
#define PS_REGNUM 17		/* Contains processor status */
#define PC_REGNUM 16		/* Contains program counter */

#define REGISTER_U_ADDR(addr, blockend, regno)		\
{ addr = blockend + regno * 4; }

/* Total amount of space needed to store our copies of the machine's
   register state, the array `registers'.  */
#define REGISTER_BYTES (NUM_REGS*4)

/* Index within `registers' of the first byte of the space for
   register N.  */

#define REGISTER_BYTE(N) ((N) * 4)

/* Number of bytes of storage in the actual machine representation
   for register N.  On the vax, all regs are 4 bytes.  */

#define REGISTER_RAW_SIZE(N) 4

/* Number of bytes of storage in the program's representation
   for register N.  On the vax, all regs are 4 bytes.  */

#define REGISTER_VIRTUAL_SIZE(N) 4

/* Largest value REGISTER_RAW_SIZE can have.  */

#define MAX_REGISTER_RAW_SIZE 4

/* Largest value REGISTER_VIRTUAL_SIZE can have.  */

#define MAX_REGISTER_VIRTUAL_SIZE 4

/* Nonzero if register N requires conversion
   from raw format to virtual format.  */

#define REGISTER_CONVERTIBLE(N) 0

/* Convert data from raw format for register REGNUM
   to virtual format for register REGNUM.  */

#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO)	\
  bcopy ((FROM), (TO), 4);

/* Convert data from virtual format for register REGNUM
   to raw format for register REGNUM.  */

#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO)	\
  bcopy ((FROM), (TO), 4);

/* Return the GDB type object for the "standard" data type
   of data in register N.  */

#define REGISTER_VIRTUAL_TYPE(N) builtin_type_int

/* Describe the pointer in each stack frame to the previous stack frame
   (its caller).  */

/* FRAME_CHAIN takes a frame's nominal address
   and produces the frame's chain-pointer.

   FRAME_CHAIN_COMBINE takes the chain pointer and the frame's nominal address
   and produces the nominal address of the caller frame.

   However, if FRAME_CHAIN_VALID returns zero,
   it means the given frame is the outermost one and has no caller.
   In that case, FRAME_CHAIN_COMBINE is not used.  */

/* In the case of the Sun, the frame's nominal address
   is the address of a 4-byte word containing the calling frame's address.  */

#define FRAME_CHAIN(thisframe)  (rt_prev_frame(thisframe))

#define FRAME_CHAIN_VALID(chain, thisframe) \
  (chain >= 0x10000000 && chain < 0x20000000)

#define FRAME_CHAIN_COMBINE(chain, thisframe) (chain)

/* Define other aspects of the stack frame.  */

#define FRAME_SAVED_PC(frame) (rt_frame_reg(frame, 15))

#define FRAME_ARGS_ADDRESS(fi) (rt_frame_args(fi.frame))

#define FRAME_LOCALS_ADDRESS(fi) (fi.frame)

/* Return number of args passed to a frame.
   Can return -1, meaning no way to tell.  */

#define FRAME_NUM_ARGS(val, fi)  \
{register struct rt_frame *tf; \
    tf = get_cached_frame(fi.frame); \
    val = -1; \
    if (tf) val = tf->nParms;\
}

/* Return number of bytes at start of arglist that are not really args.  */

#define FRAME_ARGS_SKIP 0

/* Put here the code to store, into a struct frame_saved_regs,
   the addresses of the saved registers of frame described by FRAME_INFO.
   This includes special registers such as pc and fp saved in special
   ways in the stack frame.  sp is even more special:
   the address we return for it IS the sp for the next frame.  */

#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs)		\
{ register int regnum;							\
  register struct rt_frame *tf;			\
  register CORE_ADDR next_addr;						\
  bzero (&(frame_saved_regs), sizeof (frame_saved_regs));			\
  tf = get_cached_frame((frame_info).frame);					\
  if (tf) {											\
    for(regnum = tf->firstReg; regnum < 16; regnum++) {		\
      (frame_saved_regs).regs[regnum] = tf->firstRLoc+ 4*(regnum - tf->firstReg); \
    } \
  } \
}


/* Things needed for making the inferior call functions.  */

/* Push an empty stack frame, to record the current PC, etc.  */

#define PUSH_DUMMY_FRAME \
{ register CORE_ADDR sp = read_register (SP_REGNUM);\
  register int regnum;				    \
  sp = push_word (sp, read_register (PC_REGNUM));   \
  for (regnum = 15; regnum >= 0; regnum--)  \
    sp = push_word (sp, read_register (regnum));    \
  write_register (FP_REGNUM, sp+64);		    \
  write_register (SP_REGNUM, sp);  }

/* discard special frame pushed by PUSH_DUMMY_FRAME */
#define POP_DUMMY_FRAME \
    {register CORE_ADDR sp; \
    register int regnum; \
    sp = read_register(FP_REGNUM)-64; \
    for(regnum = 0; regnum < 16;regnum++) { \
	write_register(regnum, read_memory_integer(sp, 4)); \
	sp += 4; \
    } \
    /* now get the pc */ \
    write_register(PC_REGNUM, read_memory_integer(sp, 4)); \
    sp += 4; \
    }

/* Discard from the stack the innermost frame, restoring all registers.  */
/* THIS ROUTINE DOES NOT SET R1 (SP_REGNUM) CORRECTLY */
/* REALLY MUST CONSULT TRACE TBL TO FIND OUT FRAME SIZE */
#define POP_FRAME  \
{ register CORE_ADDR fp = read_register (FP_REGNUM);		 \
  register int regnum;						 \
  register struct rt_frame *tf;			\
  tf = (struct rt_frame *) get_cached_frame(fp);			\
  if (tf) {							\
    for(regnum = tf->firstReg; regnum < 16; regnum++) {		\
	write_register(regnum,				\
	    read_memory_integer (tf->firstRLoc + 4*(regnum-tf->firstReg), 4)	\
	    );	\
    }		\
    write_register(PC_REGNUM, read_register(15));		\
    write_register(SP_REGNUM, tf->firstRLoc + 4*(16-tf->firstReg) + 36);	\
  }		\
}

/* This sequence of words is the instructions
     ls		r2,0(r1)			2 bytes		pick up args
     ls		r3,4(r1)			2 bytes		pick up args
     ls		r4,8(r1)			2 bytes		pick up args
     ls		r5,c(r1)			2 bytes		pick up args
     cal	r1,16(r1)			4 bytes		fix up ap (==sp)
     cal16	r15,<low>			4 bytes		do call
     oiu	r15,<high>(r15)	4
     lr		r0,r15			2
     ls		r15,0(r15)			2
     balr	r15				2
     bpt					2			get back to gdb
     <4 byte trace table>		4

This is 16 bytes.
*/

#define CALL_DUMMY {0x70217131, 0x72417351, 0xc8110010, 0xc2f06969, \
    0xc3ff6969, 0x60f070ff, 0xecffbd00, 0xdf7fdf00}

#define CALL_DUMMY_LENGTH 32

#define CALL_DUMMY_START_OFFSET 0

/* Insert the specified number of args and function address
   into a call sequence of the above form stored at DUMMYNAME.  */

#define FIX_CALL_DUMMY(dummyname, fun, nargs)     \
{ *((short *)(((char *)dummyname)+14)) = fun&0xffff; \
*((short *)(((char *)dummyname)+18)) = (fun>>16)&0xffff; \
}

/* Interface definitions for kernel debugger KDB.  */

/* Map machine fault codes into signal numbers.
   First subtract 0, divide by 4, then index in a table.
   Faults for which the entry in this table is 0
   are not handled by KDB; the program's own trap handler
   gets to handle then.  */

#define FAULT_CODE_ORIGIN 0
#define FAULT_CODE_UNITS 4
#define FAULT_TABLE    \
{ 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \
  0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \
  0, 0, 0, 0, 0, 0, 0, 0, \
  SIGILL }

/* Start running with a stack stretching from BEG to END.
   BEG and END should be symbols meaningful to the assembler.
   This is used only for kdb, which we do not support. */

#define INIT_STACK(beg, end)  \
{  }

/* Push the frame pointer register on the stack.  */
#define PUSH_FRAME_PTR \
{ }

/* Copy the top-of-stack to the frame pointer register.  */
#define POP_FRAME_PTR \
{ }

/* After KDB is entered by a fault, push all registers
   that GDB thinks about (all NUM_REGS of them),
   so that they appear in order of ascending GDB register number.
   The fault code will be on the stack beyond the last register.  */

#define PUSH_REGISTERS        \
{ }

/* Assuming the registers (including processor status) have been
   pushed on the stack in order of ascending GDB register number,
   restore them and return to the address in the saved PC register.  */

#define POP_REGISTERS          \
{ }

Only in .: m-ibm032init.h

/* This is how the size of an individual .o file's text segment
   is rounded on a sun.  */

#define FILEADDR_ROUND(addr) ((addr + 3) & -4)

diff -c ../../gnu/gdb/blockframe.c ./blockframe.c
*** ../../gnu/gdb/blockframe.c	Sat Apr  4 22:06:18 1987
--- ./blockframe.c	Mon Apr 27 01:06:06 1987
***************
*** 53,62 ****
  }
  
  void
! set_current_frame (frame)
       FRAME frame;
  {
    current_frame = frame;
  }
  
  /* Return the frame that called FRAME.
--- 53,67 ----
  }
  
  void
! set_current_frame (frame, validp)
       FRAME frame;
+      int validp;
  {
    current_frame = frame;
+ #ifdef ibm032
+   if (validp)
+     recache_frames();
+ #endif
  }
  
  /* Return the frame that called FRAME.
***************
*** 291,301 ****
       CORE_ADDR pc;
  {
    register int i;
  
    /* Note that the last thing in the vector is always _etext.  */
    for (i = 0; i < misc_function_count; i++)
      {
!       if (pc < misc_function_vector[i].address)
  	return i - 1;
      }
    return -1;
--- 296,309 ----
       CORE_ADDR pc;
  {
    register int i;
+   register long j;
  
    /* Note that the last thing in the vector is always _etext.  */
    for (i = 0; i < misc_function_count; i++)
      {
!       if ((j = misc_function_vector[i].address) < 0)
!         continue;
!       if (pc < j)
  	return i - 1;
      }
    return -1;
***************
*** 325,333 ****
--- 333,610 ----
      }
  }
  
+ #ifdef ibm032
+ /* RT frame format:
+     arg 3	these are not really here, but are in regs
+     arg 2
+     arg 1
+     arg 0
+     resvd 20 bytes
+     rn to r15	saved regs
+     floating regs (at first assume 0 bytes, fix later)
+     locals
+ 
+ N.B. r13 points 64 bytes below the end of the locals.
+ */
+ 
+ /*
+  * Routine for ibm032 stack trace.  Called after a new frame has been set.  Do an entire stack
+  * trace, and squirrel away the information.  We need to do this since the ibm032 (rt) does
+  * not have enough info in a known place off of the frame ptr (r13) to do anything useful.
+  * Instead, one also requires the pc, and can then perform various operations to find
+  * out how that procedure built its frame, and thus, to decode it.  However, since this is
+  * fairly slow, we only do it after a set_current_frame operation has been performed.
+ */
+ 
+ #define rtTTSize 50
+ static struct rtTTCache {
+     CORE_ADDR lbound;		/* lowest address so far known as using this trace table */
+     CORE_ADDR ttaddr;		/* address of the last '0xdf' in the trace table */
+     char ttype;				/* type of the trace table -- 0 == unused */
+ } ttcache[rtTTSize];
+ short ttptr = 0;
+ 
+ #define rtSize	50
+ static struct rt_frame rtFrames[rtSize];
+ static int rtCount;
+ static CORE_ADDR rt_next_frame, rt_next_pc;
+ 
+ static struct rtTTCache *ttfind (addr)
+     CORE_ADDR addr; {
+     register int i;
+     register struct rtTTCache *tp;
+     for(i=0,tp=ttcache;i<rtTTSize;i++,tp++) {
+ 	if (addr >= tp->lbound && addr <= tp->ttaddr) return tp;
+     }
+     return 0;
+ }
+ 
+ static ttadd(lowaddr, ttaddr, type)
+     register CORE_ADDR lowaddr, ttaddr;
+     char type; {
+     register struct rtTTCache *tp;
+     if (tp = ttfind(ttaddr)) {
+ 	/* possibly increase the bound on this cache element */
+ 	if (lowaddr < tp->lbound) tp->lbound = lowaddr;
+     }
+     else {
+ 	/* add a new element */
+ 	tp = &ttcache[ttptr++];
+ 	tp->lbound = lowaddr;
+ 	tp->ttaddr = ttaddr;
+ 	tp->ttype = type;
+ 	if (ttptr >= rtTTSize) ttptr = 0;	/* keep it in bounds */
+     }
+ }
+ 
+ /* this routine scans for a trace table, and returns 4 bytes: 0 0 <n params> <first saved reg> */
+ rt_num_regs (pc, tf)
+ register struct rt_frame *tf;
+ CORE_ADDR pc; {
+     register state = 0;
+     register long newpc = pc;
+     register int tc;
+     short nparms, firstreg;
+     short ttype;
+     short optx;
+     long offset;
+     char offtype;
+     struct rtTTCache *tp;
+     CORE_ADDR frame;
+ 
+     frame = tf->frame;
+     /* first see if it is in our ttcache */
+     if (tp = ttfind(pc)) {
+ 	state = 3;
+ 	ttype = tp->ttype;
+ 	newpc = tp->ttaddr;
+     }
+     else {
+ 	/* state machine to look for 'df' 'xx' 'df' */
+ 	while (1) {
+ 	    tc = read_memory_integer(newpc, 2);
+ 	    if (state == 0 && (tc&0xff00) == 0xdf00) {
+ 		state = 1;
+ 		ttype = tc & 0xff;
+ 	    }
+ 	    else if (state == 1 && (tc & 0xff00) == 0xdf00) {
+ 		state = 3;
+ 		break;
+ 	    }
+ 	    else state = 0;
+ 	    if (newpc - pc > 20000) break;
+ 	    newpc += 2;
+ 	}
+ 	if (state == 3) ttadd(pc, newpc, ttype);	/* add to cache */
+     }
+     if (state != 3) {
+ 	printf("No trace table for pc %x, making one up.\n", pc);
+ 	tf->nParms = 0;
+ 	tf->firstReg = 12;
+ 	tf->firstRLoc = frame+64;
+ 	rt_next_pc = read_memory_integer(frame+64+12, 4);
+ 	rt_next_frame = read_memory_integer(frame+64+4, 4);
+ 	return 0;
+     }
+     /* otherwise newpc is pointing at the last 'df' in the trace table */
+     else if (ttype == 3) {
+ 	/* funny trace table found by OBSERVATION (not doc) to be in program prolog */
+ 	return -1;		/* special value checked by recache_frames */
+     }
+     else if (ttype == 2) {
+ 	/* assembly: no registers were saved */
+ 	tf->nParms = 0;
+ 	tf->firstReg = 16;
+ 	tf->firstRLoc = 0;
+ 	rt_next_pc = read_register(15);		/* where we go back to */
+ 	rt_next_frame = frame;
+ 	tf->frame -= 100;		/* hack to eliminate duplicate tags */
+ 	return 0;
+     }
+     else if (ttype == 0x7f) {
+ 	/* special machine state frame saved by STACK_DUMMY */
+ 	tf->nParms = 0;
+ 	tf->firstReg = 16;
+ 	tf->firstRLoc = 0;
+ 	rt_next_pc = read_memory_integer(frame + 64 - 64, 4);
+ 	rt_next_frame = read_memory_integer(frame -64 + 13*4, 4);
+ 	return 0;
+     }
+     else {
+ 	/* C program, I hope */
+ 	nparms = (read_memory_integer(newpc+2, 1) >> 4) & 0x0f;
+ 	firstreg = ((tc=read_memory_integer(newpc+1, 1)) >> 4) & 0x0f;
+ 	optx = ((tc&4)? 1 : 0);	/* flags says if floating registers described */
+ 	offtype = read_memory_integer(newpc+optx+3, 1) & 0xff;
+ 	if ((offtype & 0xc0) == 0) {
+ 	    /* 6 bits of local offset */
+ 	    offset = offtype & 0x3f;
+ 	}
+ 	else if ((offtype & 0xc0) == 0x40) {
+ 	    /* 14 bits of local offset */
+ 	    offset = (offtype & 0x3f) << 8;
+ 	    offset += (read_memory_integer(newpc+optx+4, 1) & 0xff);
+ 	}
+ 	else if ((offtype & 0xc0) == 0x80) {
+ 	    /* 22 bits of local offset */
+ 	    offset = (offtype & 0x3f) << 8;
+ 	    offset += (read_memory_integer(newpc+optx+4, 1) & 0xff);
+ 	    offset <<= 8;
+ 	    offset += (read_memory_integer(newpc+optx+5, 1) & 0xff);
+ 	}
+ 	else if ((offtype & 0xc0) == 0xc0) {
+ 	    /* 30 bits of local offset */
+ 	    offset = (offtype & 0x3f) << 8;
+ 	    offset += (read_memory_integer(newpc+optx+4, 1) & 0xff);
+ 	    offset <<= 8;
+ 	    offset += (read_memory_integer(newpc+optx+5, 1) & 0xff);
+ 	    offset <<= 8;
+ 	    offset += (read_memory_integer(newpc+optx+6, 1) & 0xff);
+ 	}
+ 	offset <<= 2;
+ 	tf->nParms = nparms;
+ 	tf->firstReg = firstreg;
+ 	tf->firstRLoc = frame	/* initial frame location */
+ 	    + offset				/* to top of frame */
+ 	    - 36				/* pascal static link, incomings args and linkage */
+ 	    - (4*(16-firstreg));	/* space used by general regs */
+ 	rt_next_pc = read_memory_integer(tf->firstRLoc + 4*(15-firstreg), 4);
+ 	rt_next_frame = read_memory_integer(tf->firstRLoc + 4*(13-firstreg), 4);
+ 	return 0;
+     }
+ }
+ 
+ recache_frames() {
+     register long i, j;
+     long pc;
+     CORE_ADDR curfp;
+     struct rt_frame *tf;
+ 
+     pc = read_pc();
+     curfp = current_frame;
+     rtCount = 0;
+     /* these next special cases can only occur with frame #0; others can't make calls
+         in these intermediate states.
+     */
+     /* if pc points at br or brx, we're doing a return, so set the pc to the target */
+     i=read_memory_integer(pc, 2);
+     if ((i & 0xfe00) == 0xe800) {
+ 	/* we're looking at a br or brx instruction */
+ 	pc = read_register(i&0x0f);
+     }
+     /* also, if pc points at d9xx or c111 we're in the middle of a frame push, and should
+        use r15 for the pc.
+    */
+    if ((i & 0xff00) == 0xd900 || (i & 0xffff) == 0xc111) {
+ 	pc = read_register(15);
+    }
+     while (1) {
+ 	if (curfp <= 0x10000000 || curfp >= 0x20000000) break;
+ 	if (pc > 0x20000000) break;
+ 	/* otherwise try to add a new frame structure */
+ 	if (rtCount >= rtTTSize) break;
+ 	tf = &rtFrames[rtCount++];
+ 	tf->frame = curfp;
+ 	tf->pc = pc;
+ 	i = rt_num_regs(pc, tf);
+ 	if (i<0) {	/* exceptional values */
+ 	    rtCount--;		/* last frame was bogus */
+ 	    break;
+ 	}
+ 	/* now setup for next iteration */
+ 	pc = rt_next_pc;
+ 	curfp = rt_next_frame;
+     }
+ }
+ 
+ struct rt_frame *get_cached_frame(aframe)
+ CORE_ADDR aframe; {
+     register int i;
+     for(i=0;i<rtCount;i++) {
+ 	if (rtFrames[i].frame == aframe) return &rtFrames[i];
+     }
+     return 0;
+ }
+ 
+ long rt_prev_frame(frame)
+ register CORE_ADDR frame; {
+     register int i;
+     for(i=0;i<rtCount-1;i++) {
+ 	if (rtFrames[i].frame == frame) return rtFrames[i+1].frame;
+     }
+     return 0;
+ }
+ 
+ long rt_frame_reg(frame, reg)
+ CORE_ADDR frame;
+ register long reg; {
+     register struct rt_frame *tf;
+     tf = get_cached_frame(frame);
+     if (tf == 0) return 0;
+     if (tf->firstReg > reg) return 0;	/* didn't save this one! */
+     return read_memory_integer(tf->firstRLoc + 4 * (reg - tf->firstReg), 4);
+ }
+ 
+ long rt_frame_args(frame)
+ CORE_ADDR frame; {
+     register struct rt_frame *tf;
+     tf = get_cached_frame(frame);
+     if (!tf) return 0;
+     return tf->firstRLoc + 20 + 4*(16 - tf->firstReg);
+ }
+ #endif
+ 
+ blockinitialize() {initialize();}
+ 
  static
  initialize ()
  {
+ #ifdef ibm032
+ #ifdef CAMPHOR
+   add_com ("recache-frames", class_stack, recache_frames,
+       "Tell debugger to recompute PC/RT stack frame cache\n");
+ #endif
+ #endif
  }
  
  END_FILE
diff -c ../../gnu/gdb/breakpoint.c ./breakpoint.c
*** ../../gnu/gdb/breakpoint.c	Sat Apr  4 22:22:44 1987
--- ./breakpoint.c	Sun Apr 26 23:02:20 1987
***************
*** 94,99 ****
--- 94,100 ----
     of last breakpoint hit.  */
  
  struct command_line *breakpoint_commands;
+ char new_breakpoint_commands = 0; /* Zalman Stern, ITC 1/12/1987 */
  
  START_FILE
  
***************
*** 203,210 ****
      {
        execute_command (breakpoint_commands->line, 0);
        /* If command was "cont", breakpoint_commands is 0 now.  */
!       if (breakpoint_commands)
  	breakpoint_commands = breakpoint_commands->next;
      }
    clear_momentary_breakpoints ();
  }
--- 204,213 ----
      {
        execute_command (breakpoint_commands->line, 0);
        /* If command was "cont", breakpoint_commands is 0 now.  */
!       if (breakpoint_commands && !new_breakpoint_commands) /* Zalman Stern, ITC 1/12/1987 */
  	breakpoint_commands = breakpoint_commands->next;
+       else /* Zalman Stern, ITC 1/12/1987 */
+         new_breakpoint_commands = 0; /* Zalman Stern, ITC 1/12/1987 */
      }
    clear_momentary_breakpoints ();
  }
***************
*** 215,220 ****
--- 218,225 ----
  void
  clear_breakpoint_commands ()
  {
+   if (breakpoint_commands != 0) /* Zalman Stern, ITC 1/12/1987 */
+     new_breakpoint_commands = 1; /* Zalman Stern, ITC 1/12/1987 */
    breakpoint_commands = 0;
    breakpoint_auto_delete (0);
  }
***************
*** 921,926 ****
--- 926,933 ----
  struct cmd_list_element *enablelist;
  
  extern struct cmd_list_element *cmdlist;
+ 
+ breakinitialize() {initialize();}
  
  static
  initialize ()
diff -c ../../gnu/gdb/command.c ./command.c
*** ../../gnu/gdb/command.c	Sat Apr  4 22:24:07 1987
--- ./command.c	Sat Apr 25 17:18:15 1987
***************
*** 94,100 ****
  You are forbidden to forbid anyone else to use, share and improve
  what you give them.   Help stamp out software-hoarding!  */
  
- 
  #include "command.h"
  #include <stdio.h>
  
--- 94,99 ----
***************
*** 388,394 ****
      {
        if (nfound > 1 && allow_unknown >= 0)
  	{
! 	  *p = 0;
  	  ambbuf[0] = 0;
  	  for (c = list; c; c = c->next)
  	    if (!strncmp (*line, c->name, p - *line))
--- 387,393 ----
      {
        if (nfound > 1 && allow_unknown >= 0)
  	{
!           *p = 0;
  	  ambbuf[0] = 0;
  	  for (c = list; c; c = c->next)
  	    if (!strncmp (*line, c->name, p - *line))
diff -c ../../gnu/gdb/core.c ./core.c
*** ../../gnu/gdb/core.c	Sat Apr  4 22:27:23 1987
--- ./core.c	Mon Apr 27 13:20:47 1987
***************
*** 163,172 ****
  	int reg_offset;
  
  	/* 4.2bsd-style core dump */
  	val = myread (corechan, &u, sizeof u);
  	if (val < 0)
! 	  perror_with_name (filename);
  	data_start = exec_data_start;
  	data_end = data_start + NBPG * u.u_dsize;
  	stack_start = stack_end - NBPG * u.u_ssize;
  	data_offset = NBPG * UPAGES;
--- 163,180 ----
  	int reg_offset;
  
  	/* 4.2bsd-style core dump */
+ #ifdef ibm032
+ 	/* on ibm032, uarea is at the far end of the u pages */
+ 	lseek(corechan, UPAGES*NBPG - sizeof(u), 0);
+ #endif
  	val = myread (corechan, &u, sizeof u);
  	if (val < 0)
! 	  perror_with_name (execfile);
! #ifdef ibm032
! 	data_start = 0x10000000;
! #else
  	data_start = exec_data_start;
+ #endif
  	data_end = data_start + NBPG * u.u_dsize;
  	stack_start = stack_end - NBPG * u.u_ssize;
  	data_offset = NBPG * UPAGES;
***************
*** 208,214 ****
  	  corefile = concat (dirname, "/", filename);
  	}
  
!       set_current_frame (read_register (FP_REGNUM));
        select_frame (get_current_frame (), 0);
        validate_files ();
      }
--- 216,222 ----
  	  corefile = concat (dirname, "/", filename);
  	}
  
!       set_current_frame (read_register (FP_REGNUM), 1);
        select_frame (get_current_frame (), 0);
        validate_files ();
      }
***************
*** 523,528 ****
--- 531,539 ----
  
  #endif /* not NEW_SUN_CORE */
  
+ 
+ coreinitialize() {initialize();}
+ 
  static
  initialize ()
  {
diff -c ../../gnu/gdb/dbxread.c ./dbxread.c
*** ../../gnu/gdb/dbxread.c	Sat Apr  4 22:29:54 1987
--- ./dbxread.c	Fri May 15 15:52:24 1987
***************
*** 28,33 ****
--- 28,36 ----
  #include "initialize.h"
  #include "symtab.h"
  #include "param.h"
+ #ifdef CAMPHOR
+ #include "value.h"
+ #endif
  
  static void add_symbol_to_list ();
  static void read_dbx_symtab ();
***************
*** 89,94 ****
--- 92,109 ----
    int prev_line_number;
  };
  
+ /*  When dealing with dynamically loaded objects, the symbol table in the sym file
+     does not match where we actually load the files.  Thus, gdb has to relocate those
+     symbols during dbxread.  This is only used by the camphor support code, and
+     probably should be under an ifdef camphor.  */
+ 
+ struct dlreloc
+   {
+     long text;
+     long data;
+     long bss;
+   } dlreloc;
+ 
  static struct subfile *subfiles;
  
  static struct subfile *current_subfile;
***************
*** 1015,1020 ****
--- 1030,1037 ----
    register int i, nbl;
    register struct blockvector *bv;
    register struct block *b;
+   int j;
+   struct symbol *ts1, *ts2;
  
    for (s = symtab_list; s; s = s->next)
      {
***************
*** 1025,1034 ****
--- 1042,1238 ----
  	  b = BLOCKVECTOR_BLOCK (bv, i);
  	  qsort (&BLOCK_SYM (b, 0), BLOCK_NSYMS (b),
  		 sizeof (struct symbol *), compare_symbols);
+           /* Register parms have two decls, but the register one is the only one of interest */
+ 	  /* So, trash the name of the bad one, since binary srch could get either.  Yucko. */
+ 	  /* doing name this way enables symbol freeing code to keep working */
+           for(j=1;j<BLOCK_NSYMS(b);j++)
+ 	     {
+ 		ts1 = BLOCK_SYM(b,j-1);
+                 ts2 = BLOCK_SYM(b, j);
+ 		if (SYMBOL_NAMESPACE(ts1) == VAR_NAMESPACE
+ 		 && SYMBOL_NAMESPACE(ts2) == VAR_NAMESPACE
+ 		 && strcmp(SYMBOL_NAME(ts1), SYMBOL_NAME(ts2)) == 0)
+ 		  {if (SYMBOL_CLASS(ts1) == LOC_REGISTER)
+ 		    {SYMBOL_CLASS(ts2) = LOC_REGISTER;
+ 		    SYMBOL_TYPE(ts2) = SYMBOL_TYPE(ts1);
+ 		    SYMBOL_VALUE(ts2) = SYMBOL_VALUE(ts1);
+ 		    }
+ 		  else if (SYMBOL_CLASS(ts2) == LOC_REGISTER )
+ 		    {SYMBOL_CLASS(ts1) = LOC_REGISTER;
+ 		    SYMBOL_TYPE(ts1) = SYMBOL_TYPE(ts2);
+ 		    SYMBOL_VALUE(ts1) = SYMBOL_VALUE(ts2);
+ 		    }
+ #ifdef notdef
+ 		  else printf("Check out def of symbol %s\n", SYMBOL_NAME(ts1));
+ #endif
+ 		  }
+ 	     }
  	}
      }
  }
  
+ 
+ #ifdef CAMPHOR
+ set_rel_command(exp)
+       char *exp;
+ {
+   struct expression *expr = (struct expression *) parse_c_expression (exp);
+   register value val;
+   register long temp;
+   register struct cleanup *old_chain
+     = make_cleanup (free_current_contents, &expr);
+   val = evaluate_expression (expr);
+   temp = value_as_long (val);
+   dlreloc.text = dlreloc.data = dlreloc.bss = temp;
+   printf("Relocation for all segs set to %x.\n", temp);
+   do_cleanups (old_chain);
+ }
+ 
+ void
+ add_file_command (name)
+      char *name;
+ {
+   register int desc;
+   struct exec hdr;
+   struct nlist *nlist;
+   char *stringtab;
+   long buffer;
+   register int val;
+   extern void close ();
+   struct cleanup *old_chain;
+   int in_this_dir = 1;
+   struct symtab *symtab_temp;
+ 
+   dont_repeat ();
+ 
+   if (name == 0)
+     error_no_arg ("file to add symbols from");
+ 
+   if (symtab_list && !query ("Add more symbols from \"%s\"? ", name))
+     error ("Not confirmed.");
+ 
+   if (symfile)
+     free (symfile);
+   symfile = 0;
+ 
+   desc = open (name, 0);
+   if (desc < 0)
+     {
+       if ((desc = openp (getenv ("BZPATH"), name, 0, 0)) < 0)
+         if ((desc = openp (getenv ("CLASSPATH"), name, 0, 0)) < 0)
+           desc = openp (getenv ("PATH"), name, 0, 0);
+ 
+       in_this_dir = 0;
+     }
+   if (desc < 0)
+     perror_with_name (name);
+ 
+   old_chain = make_cleanup (close, desc);
+ 
+   val = myread (desc, &hdr, sizeof hdr);
+   if (val < 0)
+     perror_with_name (name);
+ 
+   if (N_BADMAG (hdr))
+     error ("File \"%s\" not in executable format.", name);
+ 
+   if (hdr.a_syms == 0)
+     {
+       free_all_symtabs ();		/* check this */
+       return;
+     }
+ 
+   /* Now read the string table, all at once.  */
+   val = lseek (desc, N_SYMOFF (hdr) + hdr.a_syms, 0);
+   if (val < 0)
+     perror_with_name (name);
+   val = myread (desc, &buffer, sizeof buffer);
+   if (val < 0)
+     perror_with_name (name);
+   stringtab = (char *) alloca (buffer);
+   bcopy (&buffer, stringtab, sizeof buffer);
+   val = myread (desc, stringtab + sizeof buffer, buffer - sizeof buffer);
+   if (val < 0)
+     perror_with_name (name);
+ 
+ #ifdef READ_GDB_SYMSEGS
+   /* That puts us at the symsegs.  Read them.  */
+   symseg_chain = read_symsegs (desc, name);
+   hash_symsegs ();
+ #else
+   /* Where people are using the 4.2 ld program, must not check for
+      symsegs, because that ld puts randonm garbage at the end of
+      the output file and that would trigger an error message.  */
+   symseg_chain = 0;
+ #endif
+ 
+   /* Position to read the symbol table.  Do not read it all at once. */
+   val = lseek (desc, N_SYMOFF (hdr), 0);
+   if (val < 0)
+     perror_with_name (name);
+ 
+   printf ("Reading symbol data from %s...", name);
+   fflush (stdout);
+ 
+   init_misc_functions ();
+   make_cleanup (discard_misc_bunches, 0);
+   init_header_files ();
+   make_cleanup (free_header_files, 0);
+ 
+  /* Remember symtab_list to check if the added file had any dbx info in it. */
+   symtab_temp = symtab_list;
+ 
+   /* Now that the symbol table data of the executable file are all in core,
+      process them and define symbols accordingly.  Closes desc.  */
+ 
+   read_dbx_symtab (desc, stringtab, hdr.a_syms / sizeof (struct nlist));
+ 
+   if (symtab_list == symtab_temp) {
+     printf("\n%s not compiled with -g, debugging posibilities are limited.\n", name);
+     fflush(stdout);
+   }
+   else {
+ 
+   /* Sort symbols alphabetically within each block.  */
+ 
+     sort_syms ();
+ 
+   /* Go over the misc functions and install them in vector.  */
+ 
+     condense_misc_bunches ();
+ 
+   /* Make a default for file to list.  */
+ 
+     select_source_symtab (symtab_list);
+   }
+ 
+   do_cleanups (old_chain);
+ 
+   /* Free the symtabs made by read_symsegs, but not their contents,
+      which have been copied into symtabs on symtab_list.  */
+   while (symseg_chain)
+     {
+       register struct symtab *s = symseg_chain->next;
+       free (symseg_chain);
+       symseg_chain = s;
+     }
+ 
+   if (in_this_dir && name[0] != '/')
+     {
+       char dirname[MAXPATHLEN];
+ 
+       getwd (dirname);
+       symfile = concat (dirname, "/",
+ 			savestring (name, strlen (name)));
+     }
+   else
+     symfile = savestring (name, strlen (name));
+ 
+   printf ("done.\n");
+   fflush (stdout);
+ }
+ #endif
+ 
  /* This is the symbol-file command.  Read the file, analyze its symbols,
     and add a struct symtab to symtab_list.  */
  
***************
*** 1047,1052 ****
--- 1251,1263 ----
  
    dont_repeat ();
  
+ #ifdef CAMPHOR
+   /* this command does not deal with automatically relocated stuff */
+   dlreloc.text = 0;
+   dlreloc.data = 0;
+   dlreloc.bss = 0;
+ #endif
+ 
    if (name == 0)
      error_no_arg ("file to read symbols from");
  
***************
*** 1130,1151 ****
  
    read_dbx_symtab (desc, stringtab, hdr.a_syms / sizeof (struct nlist));
  
    /* Sort symbols alphabetically within each block.  */
  
!   sort_syms ();
  
    /* Go over the misc functions and install them in vector.  */
  
!   condense_misc_bunches ();
  
    /* Don't allow char * to have a typename (else would get caddr_t.)  */
  
!   TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0;
  
    /* Make a default for file to list.  */
  
!   select_source_symtab (symtab_list);
  
    symfile = savestring (name, strlen (name));
  
    do_cleanups (old_chain);
--- 1341,1372 ----
  
    read_dbx_symtab (desc, stringtab, hdr.a_syms / sizeof (struct nlist));
  
+   /* Check to make sure file was compiled with -g. */
+ 
+   if (symtab_list == NULL) {
+     printf("\n%s not compiled with -g, debugging posibilities are limited.\n", name);
+     fflush(stdout);
+   }
+   else {
+ 
    /* Sort symbols alphabetically within each block.  */
  
!     sort_syms ();
  
    /* Go over the misc functions and install them in vector.  */
  
!     condense_misc_bunches ();
  
    /* Don't allow char * to have a typename (else would get caddr_t.)  */
  
!     TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0;
  
    /* Make a default for file to list.  */
  
!     select_source_symtab (symtab_list);
  
+   }
+ 
    symfile = savestring (name, strlen (name));
  
    do_cleanups (old_chain);
***************
*** 1204,1209 ****
--- 1425,1440 ----
      {
        fread (&buf, sizeof buf, 1, stream);
        namestring = buf.n_un.n_strx ? buf.n_un.n_strx + stringtab : 0;
+ #ifdef CAMPHOR
+       if ((buf.n_type & N_TYPE) == N_UNDF) {
+ 	  /* don't screw around with undefined symbols */
+       }
+       else {
+ 	if ((buf.n_type & N_TYPE) == N_TEXT) buf.n_value += dlreloc.text;
+ 	else if ((buf.n_type & N_TYPE) == N_DATA) buf.n_value += dlreloc.data;
+ 	else if ((buf.n_type & N_TYPE) == N_BSS) buf.n_value += dlreloc.bss;
+       }
+ #endif
        if (buf.n_type & N_STAB)
  	process_one_symbol (buf.n_type, buf.n_desc,
  			    buf.n_value, namestring);
***************
*** 1356,1361 ****
--- 1587,1596 ----
      }
  }
  
+ #ifdef ibm032
+ static  char hcState;		/* two different, incompatible compilers for the RT */
+ #endif
+   
  static void
  process_one_symbol (type, desc, value, name)
       int type, desc;
***************
*** 1363,1369 ****
       char *name;
  {
    register struct context_stack *new;
!   
    /* Something is wrong if we see real data before
       seeing a source file name.  */
    
--- 1598,1633 ----
       char *name;
  {
    register struct context_stack *new;
!   char tname[256];
!   /* Now, there are two compilers for the RT, and they are seriously incompatible.
!       pcc is just like normal c compilers: stabs for a block occur before the LBRAC
!       stab for that same block.  Thus this code squirrels them away in the context
!       and when the RBRAC is hit, restores local_symbols as of the time the LBRAC
!       was encountered, and adds these symbosl to the block that just ended.
!       
!       However, with the HC compiler, those symbols occur *after* the LBRAC symbol
!       declaring the block's start.  Totally incompatible, of course.  One expects no
!       less from IBM.  For hc compiled  programs, we use the symbols in local_symbols
!       *before* the RBRAC command pops the context stack.
!       
!       Amazingly enough, when we complained to IBM/Palo Alto about this incompatibility,
!       they claimed that Mark Linton (original author of dbx) liked the new way better, and
!       that he didn't even know that pcc used a different order.  Sorta explains some things
!       about dbx, n'est-ce pas?  Furthermore, of course, IBM  doesn't want to change
!       either pcc or hc.
! 
!       Anyway, hc and pcc compiled .o files often co-exist in programs.  How do we
!       tell which is which?  Stupid heuristic which doesn't work with programs
!       with no top-level locals or parameters: after seeing a function's start, if we see
!       an LBRAC before seeing a variable, then we are using hc, otherwise it is pcc.
!       Stupid heuristics are better than none, so we use it.
!       
!       The variable hcState is used to keep track of this crap.
!       0 ==> saw function symbol
!       1 ==> saw lbrac in state 0, this is hc.
!       2 ==> saw symbol in state 0, this is pcc.
!   */
! 
    /* Something is wrong if we see real data before
       seeing a source file name.  */
    
***************
*** 1384,1389 ****
--- 1648,1656 ----
  	 also the end of the lexical context for the previous function.  */
        new = context_stack;
        within_function = 1;
+ #ifdef ibm032
+       hcState = 0;
+ #endif
        if (new)
  	{
  	  /* Make a block for the local symbols within.  */
***************
*** 1400,1406 ****
--- 1667,1679 ----
        new->locals = 0;
        new->old_blocks = pending_blocks;
        new->start_addr = value;
+ #ifdef ibm032
+       strcpy(tname, ".");
+       strcat(tname, name);
+       new->name = define_symbol(value, tname);
+ #else
        new->name = define_symbol (value, name);
+ #endif
        local_symbols = 0;
        break;
  
***************
*** 1407,1412 ****
--- 1680,1688 ----
      case N_LBRAC:
        /* This "symbol" just indicates the start of an inner lexical
  	 context within a function.  */
+ #ifdef ibm032
+       if (hcState == 0) hcState = 1;
+ #endif
        new = (struct context_stack *) xmalloc (sizeof (struct context_stack));
        new->depth = desc;
        new->next = context_stack;
***************
*** 1422,1430 ****
        /* This "symbol" just indicates the end of an inner lexical
  	 context that was started with N_RBRAC.  */
        new = context_stack;
        if (new == 0 || desc != new->depth)
  	error ("Invalid symbol data: N_LBRAC/N_RBRAC symbol mismatch, symtab pos %d.", symnum);
-       local_symbols = new->locals;
        context_stack = new->next;
        /* If this is not the outermost LBRAC...RBRAC pair in the
  	 function, its local symbols preceded it, and are the ones
--- 1698,1711 ----
        /* This "symbol" just indicates the end of an inner lexical
  	 context that was started with N_RBRAC.  */
        new = context_stack;
+ #ifdef ibm032
+       if (hcState == 2)	/* pcc */
+ 	  local_symbols = new->locals;
+ #else
+       local_symbols = new->locals;
+ #endif
        if (new == 0 || desc != new->depth)
  	error ("Invalid symbol data: N_LBRAC/N_RBRAC symbol mismatch, symtab pos %d.", symnum);
        context_stack = new->next;
        /* If this is not the outermost LBRAC...RBRAC pair in the
  	 function, its local symbols preceded it, and are the ones
***************
*** 1443,1448 ****
--- 1724,1733 ----
  			new->start_addr + last_source_start_addr,
  			value + last_source_start_addr);
  	}
+ #ifdef ibm032
+       if (hcState == 1 && context_stack->next)	/* hc */
+         local_symbols = new->locals;		/* now we get them */
+ #endif
        free (new);
        break;
  
***************
*** 1493,1498 ****
--- 1778,1786 ----
        break;
  
      default:
+ #ifdef ibm032
+       if (hcState == 0) hcState = 2;
+ #endif
        if (name)
  	define_symbol (value, name);
      }
***************
*** 1553,1558 ****
--- 1841,1849 ----
  	 Dbx data never actually contains 'l'.  */
      case 'l':
        SYMBOL_CLASS (sym) = LOC_LOCAL;
+ #ifdef ibm032
+       if (hcState == 1) value += 1000000;		/* temporary hack until rel 3 pcc matches hc */
+ #endif
        SYMBOL_VALUE (sym) = value;
        SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
        add_symbol_to_list (sym, &local_symbols);
***************
*** 1572,1577 ****
--- 1863,1875 ----
        add_symbol_to_list (sym, &local_symbols);
        break;
  
+     case 'R':
+       SYMBOL_CLASS (sym) = LOC_REGISTER;
+       SYMBOL_VALUE (sym) = value;
+       SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+       add_symbol_to_list (sym, &local_symbols);
+       break;
+ 
      case 'S':
        /* Static symbol at top level of file */
        SYMBOL_CLASS (sym) = LOC_STATIC;
***************
*** 1616,1622 ****
        break;
  
      default:
!       error ("Invalid symbol data: unknown symbol-type code `%c' at symtab pos %d.", deftype, symnum);
      }
    return sym;
  }
--- 1914,1928 ----
        break;
  
      default:
!       printf ("Unknown symbol-type code '%c' in dbx symbol table, assuming local.\n", deftype);
!       SYMBOL_CLASS (sym) = LOC_LOCAL;
! #ifdef ibm032
!       if (hcState == 1) value += 1000000;		/* temporary hack until rel 3 pcc matches hc */
! #endif
!       SYMBOL_VALUE (sym) = value;
!       SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
!       add_symbol_to_list (sym, &local_symbols);      
!       break;
      }
    return sym;
  }
***************
*** 1741,1746 ****
--- 2047,2056 ----
  	(*pp) += 5;
        else if (!strncmp (*pp, "r(0,1);0;", 9))
  	(*pp) += 9;
+ #if 1
+       else if ((**pp == 'r') && (!strncmp(*pp + 2, ";0;", 3)))
+         (*pp) += 5;
+ #endif
        else break;
  
        TYPE_CODE (type) = TYPE_CODE_ARRAY;
***************
*** 1980,1986 ****
       rather than -128 which is what I would like.
       So use n1 != 0 to prevent char from being taken as unsigned.  */
  
!   else if (n2 == 0 && n1 == 1)
      {
        /* an unsigned type */
        if (n3 == (1 << (8 * sizeof (int))))
--- 2290,2296 ----
       rather than -128 which is what I would like.
       So use n1 != 0 to prevent char from being taken as unsigned.  */
  
!   if (n2 == 0)
      {
        /* an unsigned type */
        if (n3 == (1 << (8 * sizeof (int))))
***************
*** 1989,1994 ****
--- 2299,2306 ----
  	return builtin_type_unsigned_short;
        if (n3 == (1 << (8 * sizeof (char))))
  	return builtin_type_unsigned_char;
+       if (n3 == (1 << (8 * sizeof (char) - 1)))
+ 	return builtin_type_char;
      }
    else
      {
***************
*** 2002,2007 ****
--- 2314,2321 ----
        if (n3 == (1 << (8 * sizeof (char) - 1)))
  	return builtin_type_char;
      }
+    if (n2 == 0 && n3 == 1)
+     return builtin_type_void;
    error ("Invalid symbol data: range type spec %s at symtab pos %d.",
  	 errp - 1, symnum);
  }
***************
*** 2033,2040 ****
--- 2347,2364 ----
  
    /* Read the digits, as far as they go.  */
  
+ #if 0 /* Yet another "Compiler sucks" fix. */
    while ((c = *p++) >= '0' && c <= '9')
+ #else
+   while (((c = *p++) >= '0' && c <= '9') || ((end != '\n') && (c == '\n')))
+ #endif
      {
+ #if 1
+       if (c == '\n') {
+         printf("Ignoring bogus newline in stabs entry. Your compiler should be fixed.\n");
+         continue;
+       }
+ #endif
        n *= 10;
        n += c - '0';
      }
***************
*** 2050,2060 ****
--- 2374,2392 ----
    return n * sign;
  }
  
+ dbxinitialize() {initialize();}
+ 
  static
  initialize ()
  {
    symfile = 0;
  
+ #ifdef CAMPHOR
+   add_com ("add-file", class_files, add_file_command,
+            "Add a new symbol table (in dbx format) from file FILE.");
+   add_com("set-rel", class_files, set_rel_command,
+            "Set relocation for add-file command to NUMBER.");
+ #endif
    add_com ("symbol-file", class_files, symbol_file_command,
  	   "Load symbol table (in dbx format) from executable file FILE.");
  }
diff -c ../../gnu/gdb/environ.c ./environ.c
*** ../../gnu/gdb/environ.c	Sat Apr  4 22:31:16 1987
--- ./environ.c	Sun Apr 26 23:48:05 1987
***************
*** 129,135 ****
  
    if (e->allocated < i)
      {
!       e->allocated = max (i, e->allocated + 10);
        e->vector = (char **) xrealloc (e->vector,
  				      (e->allocated + 1) * sizeof (char *));
      }
--- 129,136 ----
  
    if (e->allocated < i)
      {
!       e->allocated = i + 10;
        e->vector = (char **) xrealloc (e->vector,
  				      (e->allocated + 1) * sizeof (char *));
      }
diff -c ../../gnu/gdb/eval.c ./eval.c
*** ../../gnu/gdb/eval.c	Sat Apr  4 22:32:36 1987
--- ./eval.c	Mon Apr 27 00:01:27 1987
***************
*** 546,551 ****
--- 546,553 ----
      }
  }
  
+ evalinitialize() {initialize();}
+ 
  static
  initialize ()
  { }
diff -c ../../gnu/gdb/expread.y ./expread.y
*** ../../gnu/gdb/expread.y	Sat Apr  4 22:35:27 1987
--- ./expread.y	Sun Apr 26 23:56:51 1987
***************
*** 650,655 ****
--- 650,656 ----
  	    ;
  	  else
  	    {
+ 	      /*N.B. error does a longjmp, so we do not have to worry about storage */
  	      err_copy = (char *) alloca (olen + 1);
  	      bcopy (lexptr, err_copy, olen);
  	      err_copy[olen] = 0;
***************
*** 945,953 ****
  {
    register int len = sizeof (struct expression) +
  				    expr->nelts * sizeof (union exp_element);
!   register struct expression *temp
!     = (struct expression *) alloca (len);
    register int inpos = expr->nelts, outpos = 0;
  
    /* Copy the original expression into temp.  */
    bcopy (expr, temp, len);
--- 946,955 ----
  {
    register int len = sizeof (struct expression) +
  				    expr->nelts * sizeof (union exp_element);
!   register struct expression *temp;
    register int inpos = expr->nelts, outpos = 0;
+ 
+   temp = (struct expression *) alloca(len);
  
    /* Copy the original expression into temp.  */
    bcopy (expr, temp, len);
diff -c ../../gnu/gdb/findvar.c ./findvar.c
*** ../../gnu/gdb/findvar.c	Sat Apr  4 22:36:38 1987
--- ./findvar.c	Mon Apr 27 00:01:44 1987
***************
*** 359,364 ****
--- 359,366 ----
    return value_cast (lookup_pointer_type (SYMBOL_TYPE (var)),
  		     value_from_long (builtin_type_long, addr));
  }
+ 
+ findinitialize() {initialize();}
  
  static
  initialize ()
diff -c ../../gnu/gdb/firstfile.c ./firstfile.c
*** ../../gnu/gdb/firstfile.c	Sat Apr  4 22:37:06 1987
--- ./firstfile.c	Mon Apr 27 00:02:06 1987
***************
*** 125,130 ****
--- 125,152 ----
  static initialize_dummy_1 ();
  static initialize_dummy_2 ();
  
+ initialize_all_files() {
+     blockinitialize();
+     breakinitialize();
+     coreinitialize();
+     dbxinitialize();
+     evalinitialize();
+     findinitialize();
+     infcmdinitialize();
+     inflowinitialize();
+     infruninitialize();
+     symmiscinitialize();
+     symtabinitialize();
+     valarithinitialize();
+     valopsinitialize();
+     valprintinitialize();
+     valuesinitialize();
+     printcmdinitialize();
+     sourceinitialize();
+     stackinitialize();
+ }
+ 
+ #if 0
  initialize_all_files ()
  {
    initialize_next_file ((char *) initialize_dummy_2
***************
*** 148,153 ****
--- 170,176 ----
  initialize_dummy_2 ()
  {
  }
+ #endif
  
  /* This makes the function initialize_next_file.  */
  
diff -c ../../gnu/gdb/frame.h ./frame.h
*** ../../gnu/gdb/frame.h	Sat Apr  4 22:37:22 1987
--- ./frame.h	Mon Apr 27 00:02:14 1987
***************
*** 20,25 ****
--- 20,35 ----
  
  /* Note that frame.h requires param.h! */
  
+ #ifdef ibm032
+ struct rt_frame {
+     CORE_ADDR frame;		/* frame address */
+     CORE_ADDR pc;			/* pc we called from */
+     CORE_ADDR firstRLoc;	/* loc'n of first saved general reg */
+     short nParms;			/* number of parameters to this frame */
+     short firstReg;			/* the reg stored at 64(fp) */
+ };
+ #endif
+ 
  #define FRAME CORE_ADDR
  
  struct frame_info
***************
*** 62,64 ****
--- 72,77 ----
  extern struct block *get_selected_block ();
  extern struct symbol *get_frame_function ();
  extern struct symbol *get_pc_function ();
+ #ifdef ibm032
+ extern struct rt_frame *get_cached_frame();
+ #endif
diff -c ../../gnu/gdb/infcmd.c ./infcmd.c
*** ../../gnu/gdb/infcmd.c	Sat Apr  4 22:47:22 1987
--- ./infcmd.c	Mon Apr 27 00:07:53 1987
***************
*** 39,45 ****
  /* String containing arguments to give to the program,
     with a space added at the front.  Just a space means no args.  */
  
! static char *inferior_args;
  
  /* Pid of our debugged inferior, or 0 if no inferior now.  */
  
--- 39,45 ----
  /* String containing arguments to give to the program,
     with a space added at the front.  Just a space means no args.  */
  
! static char *inferior_args = NULL;
  
  /* Pid of our debugged inferior, or 0 if no inferior now.  */
  
***************
*** 112,119 ****
  set_args_command (args)
       char *args;
  {
!   free (inferior_args);
!   if (!args) args = "";
    inferior_args = concat (" ", args, "");
  }
  
--- 112,121 ----
  set_args_command (args)
       char *args;
  {
!   if (inferior_args != NULL)
!     free (inferior_args);
!   if (!args)
!     args = "";
    inferior_args = concat (" ", args, "");
  }
  
***************
*** 171,177 ****
        signal (SIGINT, SIG_DFL);  */
  
        ptrace (0);
!       execle ("/bin/sh", "sh", "-c", allargs, 0,
  	      environ_vector (inferior_environ));
  
        fprintf (stderr, "Cannot exec /bin/sh: %s.\n",
--- 173,180 ----
        signal (SIGINT, SIG_DFL);  */
  
        ptrace (0);
! 
!       execle ("/bin/csh", "csh", "-f", "-c", allargs, 0,
  	      environ_vector (inferior_environ));
  
        fprintf (stderr, "Cannot exec /bin/sh: %s.\n",
***************
*** 473,478 ****
--- 476,482 ----
  
        retbuf[0] = stop_r0;
        retbuf[1] = stop_r1;
+ 
        val = value_being_returned (value_type, retbuf);
        printf ("Value returned is $%d = ", record_latest_value (val));
        value_print (val, stdout);
***************
*** 705,710 ****
--- 709,716 ----
    printf ("Contents are relative to selected stack frame.\n");
  }
  
+ infcmdinitialize() {initialize();}
+ 
  static
  initialize ()
  {
diff -c ../../gnu/gdb/inflow.c ./inflow.c
*** ../../gnu/gdb/inflow.c	Sat Apr  4 22:56:34 1987
--- ./inflow.c	Mon Apr 27 00:12:10 1987
***************
*** 188,194 ****
    inferior_pid = 0;
    mark_breakpoints_out ();
    if (have_core_file_p ())
!     set_current_frame (read_register (FP_REGNUM));
  }
  
  /* Resume execution of the inferior process.
--- 188,194 ----
    inferior_pid = 0;
    mark_breakpoints_out ();
    if (have_core_file_p ())
!     set_current_frame (read_register (FP_REGNUM), 1);
  }
  
  /* Resume execution of the inferior process.
***************
*** 266,271 ****
--- 266,274 ----
    char buf[MAX_REGISTER_RAW_SIZE];
    register int i;
  
+ #ifdef ibm032
+   offset += UPAGES*NBPG - sizeof(u);	/* ibm032: ustruct at end of uarea */
+ #endif
    offset = ptrace (3, inferior_pid, offset, 0) - KERNEL_U_ADDR;
    for (regno = 0; regno < NUM_REGS; regno++)
      {
***************
*** 291,296 ****
--- 294,303 ----
    register unsigned int regaddr;
    char buf[80];
  
+ #ifdef ibm032
+   offset += UPAGES*NBPG - sizeof(u);	/* ibm032: ustruct at end of uarea */
+ #endif
+ 
    offset = ptrace (3, inferior_pid, offset, 0) - KERNEL_U_ADDR;
  
    if (regno >= 0)
***************
*** 340,347 ****
    register int count
      = (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int);
    /* Allocate buffer of that many longwords.  */
!   register int *buffer = (int *) alloca (count * sizeof (int));
  
    /* Read all the longwords */
    for (i = 0; i < count; i++, addr += sizeof (int))
      buffer[i] = ptrace (1, inferior_pid, addr, 0);
--- 347,355 ----
    register int count
      = (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int);
    /* Allocate buffer of that many longwords.  */
!   register int *buffer;
  
+   buffer = (int *) alloca(count * sizeof(int));
    /* Read all the longwords */
    for (i = 0; i < count; i++, addr += sizeof (int))
      buffer[i] = ptrace (1, inferior_pid, addr, 0);
***************
*** 367,377 ****
    register int count
      = (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int);
    /* Allocate buffer of that many longwords.  */
!   register int *buffer = (int *) alloca (count * sizeof (int));
    extern int errno;
  
    /* Fill start and end extra bytes of buffer with existing memory data.  */
  
    buffer[0] = ptrace (1, inferior_pid, addr, 0);
    if (count > 1)
      buffer[count - 1]
--- 375,386 ----
    register int count
      = (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int);
    /* Allocate buffer of that many longwords.  */
!   register int *buffer;
    extern int errno;
  
    /* Fill start and end extra bytes of buffer with existing memory data.  */
  
+   buffer = (int *) alloca (count * sizeof (int));
    buffer[0] = ptrace (1, inferior_pid, addr, 0);
    if (count > 1)
      buffer[count - 1]
***************
*** 388,397 ****
      {
        errno = 0;
        ptrace (4, inferior_pid, addr, buffer[i]);
!       if (errno)
  	return 1;
      }
- 
    return 0;
  }
  
--- 397,406 ----
      {
        errno = 0;
        ptrace (4, inferior_pid, addr, buffer[i]);
!       if (errno) {
  	return 1;
+ 	}
      }
    return 0;
  }
  
***************
*** 421,426 ****
--- 430,437 ----
      }
  }
  
+ inflowinitialize() {initialize();}
+ 
  static
  initialize ()
  {
diff -c ../../gnu/gdb/infrun.c ./infrun.c
*** ../../gnu/gdb/infrun.c	Sat Apr  4 22:57:15 1987
--- ./infrun.c	Mon Apr 27 00:17:40 1987
***************
*** 257,263 ****
        pc_changed = 0;
        fetch_inferior_registers ();
        stop_pc = read_pc ();
!       set_current_frame (read_register (FP_REGNUM));
        stop_frame = get_current_frame ();
        stop_sp = read_register (SP_REGNUM);
        another_trap = 0;
--- 257,271 ----
        pc_changed = 0;
        fetch_inferior_registers ();
        stop_pc = read_pc ();
! #ifdef CAMPHOR
!       /* if we're not going to stop, don't bother with a stack trace */
!       if (WIFSTOPPED(w) && !signal_stop[WSTOPSIG(w)])
! 	  set_current_frame(read_register(FP_REGNUM), 0);
!       else
! 	  set_current_frame(read_register(FP_REGNUM), 1);
! #else
!       set_current_frame (read_register (FP_REGNUM), 1);
! #endif
        stop_frame = get_current_frame ();
        stop_sp = read_register (SP_REGNUM);
        another_trap = 0;
***************
*** 688,700 ****
  
    /* Save the function value return registers
       We might be about to restore their previous contents.  */
!   stop_r0 = read_register (0);
!   stop_r1 = read_register (1);
  
    if (stop_stack_dummy)
      {
        /* Pop the empty frame that contains the stack dummy.  */
        POP_FRAME;
        select_frame (read_register (FP_REGNUM), 0);
      }
  }
--- 696,717 ----
  
    /* Save the function value return registers
       We might be about to restore their previous contents.  */
! #ifdef ibm032
!     stop_r0 = read_register (2);
!     stop_r1 = read_register (3);
! #else
!     stop_r0 = read_register (0);
!     stop_r1 = read_register (1);
! #endif
  
    if (stop_stack_dummy)
      {
        /* Pop the empty frame that contains the stack dummy.  */
+ #ifdef ibm032
+       POP_DUMMY_FRAME;
+ #else
        POP_FRAME;
+ #endif
        select_frame (read_register (FP_REGNUM), 0);
      }
  }
***************
*** 841,846 ****
--- 858,865 ----
    printf ("\nUse the \"handle\" command to change these tables.\n");
  }
  
+ infruninitialize() {initialize();}
+ 
  static
  initialize ()
  {
diff -c ../../gnu/gdb/initialize.h ./initialize.h
*** ../../gnu/gdb/initialize.h	Sat Apr  4 22:58:27 1987
--- ./initialize.h	Sun May 24 00:19:21 1987
***************
*** 103,109 ****
--- 103,120 ----
     of the end of one object file's text to the start of the next
     object file's text.  */
  
+ /* Changed to use ifdefs on the machine type.  David Nichols, 11/28/86 */
+ #ifdef ibm032
+ #include "m-ibm032init.h"
+ #endif
+ 
+ #ifdef vax
  #include "m-vaxinit.h"
+ #endif
+ 
+ #ifdef sun
+ #include "m-suninit.h"
+ #endif
  
  /* This is used to make a file's initialization function.
     It calls another function named `initialize', which must
diff -c ../../gnu/gdb/main.c ./main.c
*** ../../gnu/gdb/main.c	Sat Apr  4 23:11:59 1987
--- ./main.c	Mon Apr 27 00:27:21 1987
***************
*** 236,241 ****
--- 236,243 ----
    if (*p)
      {
        c = lookup_cmd (&p, cmdlist, "", 0);
+       if (c->function == 0)
+ 	error ("That is not a command, just a help topic.");
        if (c->class == (int) class_user)
  	{
  	  if (*p)
***************
*** 457,463 ****
  
  /* Add an element to the list of commands.  */
  
! void
  add_com (name, class, fun, doc)
       char *name;
       int class;
--- 459,465 ----
  
  /* Add an element to the list of commands.  */
  
! struct cmd_list_element *
  add_com (name, class, fun, doc)
       char *name;
       int class;
***************
*** 464,470 ****
       void (*fun) ();
       char *doc;
  {
!   add_cmd (name, class, fun, doc, &cmdlist);
  }
  
  /* Add an alias or abbreviation command to the list of commands.  */
--- 466,473 ----
       void (*fun) ();
       char *doc;
  {
! 
!   return add_cmd (name, class, fun, doc, &cmdlist);
  }
  
  /* Add an alias or abbreviation command to the list of commands.  */
***************
*** 547,552 ****
--- 550,556 ----
  
    if (c && c->class == (int) class_user)
      free_command_lines (&c->function);
+ 
  
    add_com (comname, class_user, cmds,
  	   (c && c->class == (int) class_user)
diff -c ../../gnu/gdb/param.h ./param.h
*** ../../gnu/gdb/param.h	Sat Apr  4 23:15:44 1987
--- ./param.h	Mon Apr 27 00:28:17 1987
***************
*** 1 ****
--- 1,19 ----
+ /* Changed to use ifdefs so we don't have to edit it all the time.
+ David Nichols
+ 28 November 1986 */
+ 
+ #ifdef vax
  #include "m-vax.h"
+ #endif
+ 
+ #ifdef ibm032
+ #include "m-ibm032.h"
+ #endif
+ 
+ #ifdef sun
+ #ifdef mc68020
+ #include "m-sun3.h"
+ #else
+ #include "m-sun2.h"
+ #endif
+ #endif
diff -c ../../gnu/gdb/pinsn.c ./pinsn.c
*** ../../gnu/gdb/pinsn.c	Sat Apr  4 23:15:58 1987
--- ./pinsn.c	Mon Apr 27 00:28:36 1987
***************
*** 1 ****
--- 1,15 ----
+ /* Changed to use ifdefs so we don't have to edit this.
+ David Nichols
+ 28 Nov 1986 */
+ 
+ #ifdef ibm032
+ #include "ibm032-pinsn.c"
+ #endif
+ 
+ #ifdef vax
  #include "vax-pinsn.c"
+ #endif
+ 
+ #ifdef sun
+ #include "m68k-pinsn.c"
+ #endif
diff -c ../../gnu/gdb/printcmd.c ./printcmd.c
*** ../../gnu/gdb/printcmd.c	Sat Apr  4 23:17:03 1987
--- ./printcmd.c	Mon Apr 27 00:30:52 1987
***************
*** 797,804 ****
       CORE_ADDR frame;
       FILE *stream;
  {
!   char *space = (char *) alloca (TYPE_LENGTH (SYMBOL_TYPE (var)));
    value val = read_var_value (var, frame);
    value_print (val, stream);
  }
  
--- 797,805 ----
       CORE_ADDR frame;
       FILE *stream;
  {
!   char *space;
    value val = read_var_value (var, frame);
+   space = (char *) alloca (TYPE_LENGTH (SYMBOL_TYPE (var)));
    value_print (val, stream);
  }
  
***************
*** 883,888 ****
--- 884,891 ----
      }
  }
  
+ printcmdinitialize() {initialize();}
+ 
  static
  initialize ()
  {
diff -c ../../gnu/gdb/source.c ./source.c
*** ../../gnu/gdb/source.c	Sat Apr  4 23:17:55 1987
--- ./source.c	Mon Apr 27 00:31:25 1987
***************
*** 276,282 ****
    if (get_exec_file () != 0 && exec_mtime < st.st_mtime)
      printf ("Source file is more recent than executable.\n");
  
!   data = (char *) alloca (st.st_size);
    myread (desc, data, st.st_size, s->filename);
    end = data + st.st_size;
    p = data;
--- 276,283 ----
    if (get_exec_file () != 0 && exec_mtime < st.st_mtime)
      printf ("Source file is more recent than executable.\n");
  
!   data = (char *) alloca(st.st_size);
! 
    myread (desc, data, st.st_size, s->filename);
    end = data + st.st_size;
    p = data;
***************
*** 530,535 ****
--- 531,538 ----
      printf ("Line number %d is out of range for \"%s\".\n",
  	    sal.line, sal.symtab->filename);
  }
+ 
+ sourceinitialize() {initialize();}
  
  static
  initialize ()
diff -c ../../gnu/gdb/stack.c ./stack.c
*** ../../gnu/gdb/stack.c	Sun Apr  5 00:28:05 1987
--- ./stack.c	Mon Apr 27 00:31:50 1987
***************
*** 511,516 ****
--- 511,517 ----
  
    print_stack_frame (selected_frame, selected_frame_level, 1);
  }
+ 
  
  static void
  return_command (retval_exp)
***************
*** 538,543 ****
--- 539,546 ----
    frame_command ("0", 1);
  }
  
+ stackinitialize() {initialize();}
+ 
  static
  initialize ()
  {
diff -c ../../gnu/gdb/symmisc.c ./symmisc.c
*** ../../gnu/gdb/symmisc.c	Sun Apr  5 00:33:16 1987
--- ./symmisc.c	Mon Apr 27 00:37:46 1987
***************
*** 504,509 ****
--- 504,511 ----
    return i;
  }
  
+ symmiscinitialize() {initialize();}
+ 
  static
  initialize ()
  {
diff -c ../../gnu/gdb/symtab.c ./symtab.c
*** ../../gnu/gdb/symtab.c	Sun Apr  5 00:35:45 1987
--- ./symtab.c	Mon Apr 27 00:38:19 1987
***************
*** 71,78 ****
    strcpy (copy, name);
    strcat (copy, ".c");
    for (s = symtab_list; s; s = s->next)
!     if (!strcmp (copy, s->filename))
        return s;
  
    return 0;
  }
--- 71,79 ----
    strcpy (copy, name);
    strcat (copy, ".c");
    for (s = symtab_list; s; s = s->next)
!     if (!strcmp (copy, s->filename)) {
        return s;
+     }
  
    return 0;
  }
***************
*** 703,709 ****
    register struct symbol *sym;
    register CORE_ADDR pc;
    register int i;
!   char *copy;
  
    /* Defaults have defaults.  */
  
--- 704,710 ----
    register struct symbol *sym;
    register CORE_ADDR pc;
    register int i;
!   char *copy, *dotcopy;
  
    /* Defaults have defaults.  */
  
***************
*** 818,825 ****
--- 819,847 ----
    /* Look up that token as a function.
       If file specified, use that file's per-file block to start with.  */
  
+ #ifdef ibm032
+   /* RT has stupid dots in front of function names (_.foo), and worse, has bogus _foo
+       symbol to confuse us, too.
+   */
+   if (*copy != '.') {
+       dotcopy = (char *) alloca (strlen(copy)+2);	/* one for the null and one for the dot */
+       dotcopy[0] = '.';
+       strcpy(dotcopy+1, copy);
+       sym = lookup_symbol (dotcopy, s ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), 1) : 0,
+ 			   VAR_NAMESPACE);
+       }
+   else {
+       sym = 0;
+       dotcopy = 0;
+   }
+   if (!sym || SYMBOL_CLASS(sym) != LOC_BLOCK) {
+       sym = lookup_symbol (copy, s ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), 1) : 0,
+ 	   VAR_NAMESPACE);
+   }
+ #else
    sym = lookup_symbol (copy, s ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), 1) : 0,
  		       VAR_NAMESPACE);
+ #endif
  
    if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK)
      {
***************
*** 835,840 ****
--- 857,875 ----
    if (sym)
      error ("%s is not a function.", copy);
  
+ #ifdef ibm032
+   /* try the dot version first */
+   if (dotcopy) for (i = 0; i < misc_function_count; i++)
+     if (!strcmp (misc_function_vector[i].name, dotcopy))
+       {
+ 	value.symtab = 0;
+ 	value.line = 0;
+ 	value.pc = misc_function_vector[i].address + FUNCTION_START_OFFSET;
+ 	if (funfirstline)
+ 	  SKIP_PROLOGUE (value.pc);
+ 	return value;
+       }
+ #endif
    for (i = 0; i < misc_function_count; i++)
      if (!strcmp (misc_function_vector[i].name, copy))
        {
***************
*** 1027,1032 ****
--- 1062,1069 ----
  
    return type;
  }
+ 
+ symtabinitialize() {initialize();}
  
  static
  initialize ()
diff -c ../../gnu/gdb/utils.c ./utils.c
*** ../../gnu/gdb/utils.c	Sun Apr  5 00:40:01 1987
--- ./utils.c	Mon Apr 27 00:40:01 1987
***************
*** 151,156 ****
--- 151,157 ----
    else
      err = "unknown error";
  
+   /* ibm032: no core leak or other problems 'cause we alway call error -> longjmps away */
    combined = (char *) alloca (strlen (err) + strlen (string) + 3);
    strcpy (combined, string);
    strcat (combined, ": ");
diff -c ../../gnu/gdb/valarith.c ./valarith.c
*** ../../gnu/gdb/valarith.c	Sun Apr  5 00:40:44 1987
--- ./valarith.c	Fri May 22 20:18:46 1987
***************
*** 239,245 ****
    COERCE_ARRAY (arg1);
  
    len = TYPE_LENGTH (VALUE_TYPE (arg1));
!   p = VALUE_CONTENTS (arg1);
  
    while (--len >= 0)
      {
--- 239,245 ----
    COERCE_ARRAY (arg1);
  
    len = TYPE_LENGTH (VALUE_TYPE (arg1));
!   p = (char *) VALUE_CONTENTS (arg1);
  
    while (--len >= 0)
      {
***************
*** 281,288 ****
  	   && ((len = TYPE_LENGTH (VALUE_TYPE (arg1)))
  	       == TYPE_LENGTH (VALUE_TYPE (arg2))))
      {
!       p1 = VALUE_CONTENTS (arg1);
!       p2 = VALUE_CONTENTS (arg2);
        while (--len >= 0)
  	{
  	  if (*p1++ != *p2++)
--- 281,288 ----
  	   && ((len = TYPE_LENGTH (VALUE_TYPE (arg1)))
  	       == TYPE_LENGTH (VALUE_TYPE (arg2))))
      {
!       p1 = (char *) VALUE_CONTENTS (arg1);
!       p2 = (char *) VALUE_CONTENTS (arg2);
        while (--len >= 0)
  	{
  	  if (*p1++ != *p2++)
***************
*** 348,353 ****
--- 348,355 ----
    return value_from_long (VALUE_TYPE (arg1), ~ value_as_long (arg1));
  }
  
+ valarithinitialize() {initialize();}
+ 
  static
  initialize ()
  {
diff -c ../../gnu/gdb/valops.c ./valops.c
*** ../../gnu/gdb/valops.c	Sun Apr  5 00:41:32 1987
--- ./valops.c	Fri May 22 20:13:02 1987
***************
*** 174,180 ****
    /* Return a value just like TOVAL except with the contents of FROMVAL.  */
  
    val = allocate_value (type);
!   bcopy (toval, val, VALUE_CONTENTS (val) - (char *) val);
    bcopy (VALUE_CONTENTS (fromval), VALUE_CONTENTS (val), TYPE_LENGTH (type));
  
    return val;
--- 174,180 ----
    /* Return a value just like TOVAL except with the contents of FROMVAL.  */
  
    val = allocate_value (type);
!   bcopy (toval, val, (char *) VALUE_CONTENTS (val) - (char *) val);
    bcopy (VALUE_CONTENTS (fromval), VALUE_CONTENTS (val), TYPE_LENGTH (type));
  
    return val;
***************
*** 413,419 ****
--- 413,427 ----
        }
      else if (code == TYPE_CODE_PTR)
        {
+ #ifdef ibm032
+ 	/* apparently '_a' pseudoprocedure has lval_memory as its lval type */
+ 	if (VALUE_LVAL(function) == lval_memory) 
+ 	  funaddr = VALUE_ADDRESS(function);
+ 	else
+           funaddr = value_as_long (function);
+ #else
  	funaddr = value_as_long (function);
+ #endif
  	if (TYPE_CODE (TYPE_TARGET_TYPE (ftype))
  	    == TYPE_CODE_FUNC)
  	  value_type = TYPE_TARGET_TYPE (TYPE_TARGET_TYPE (ftype));
***************
*** 429,439 ****
  	else
  	  /* Handle integer used as address of a function.  */
  	  funaddr = value_as_long (function);
- 
  	value_type = builtin_type_int;
        }
!     else
        error ("Invalid data type for function to be called.");
  
      /* Create a call sequence customized for this function
         and the number of arguments for it.  */
--- 437,447 ----
  	else
  	  /* Handle integer used as address of a function.  */
  	  funaddr = value_as_long (function);
  	value_type = builtin_type_int;
        }
!     else {
        error ("Invalid data type for function to be called.");
+     }
  
      /* Create a call sequence customized for this function
         and the number of arguments for it.  */
***************
*** 590,595 ****
--- 598,605 ----
    return value_field (arg1, i);
  }
  
+ valopsinitialize() {initialize();}
+ 
  static
  initialize ()
  { }
diff -c ../../gnu/gdb/valprint.c ./valprint.c
*** ../../gnu/gdb/valprint.c	Sun Apr  5 00:42:28 1987
--- ./valprint.c	Mon Apr 27 00:40:56 1987
***************
*** 529,534 ****
--- 529,536 ----
    print_max = atoi (arg);
  }
  
+ valprintinitialize() {initialize();}
+ 
  static
  initialize ()
  {
diff -c ../../gnu/gdb/value.h ./value.h
*** ../../gnu/gdb/value.h	Sun Apr  5 00:43:44 1987
--- ./value.h	Fri May 22 20:03:32 1987
***************
*** 37,43 ****
      short repeated;
      short repetitions;
      short regno;
!     char contents[1];
    };
  
  typedef struct value *value;
--- 37,43 ----
      short repeated;
      short repetitions;
      short regno;
!     long contents[1]; /* Forces alignment... */
    };
  
  typedef struct value *value;
diff -c ../../gnu/gdb/values.c ./values.c
*** ../../gnu/gdb/values.c	Sun Apr  5 00:45:14 1987
--- ./values.c	Fri May 22 20:12:40 1987
***************
*** 338,344 ****
       int offset, bitpos, bitsize;
       value newval;
  {
!   register char *addr = VALUE_CONTENTS (var->value) + offset;
    if (bitsize)
      modify_field (addr, value_as_long (newval),
  		  bitpos, bitsize);
--- 338,344 ----
       int offset, bitpos, bitsize;
       value newval;
  {
!   register char *addr = (char *) VALUE_CONTENTS (var->value) + offset;
    if (bitsize)
      modify_field (addr, value_as_long (newval),
  		  bitpos, bitsize);
***************
*** 733,738 ****
--- 733,740 ----
    write_register (1, retbuf[1]);
  }
  
+ valuesinitialize() {initialize();}
+ 
  static
  initialize ()
  {