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mase-debug.c
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mase-debug.c
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/* mase-debug.c - sim-mase debugging functions */
/* MASE was created by Eric Larson, Saugata Chatterjee, Dan Ernst, and
* Todd M. Austin at the University of Michigan.
*/
/* SimpleScalar(TM) Tool Suite
* Copyright (C) 1994-2001 by Todd M. Austin, Ph.D. and SimpleScalar, LLC.
* All Rights Reserved.
*
* THIS IS A LEGAL DOCUMENT, BY USING SIMPLESCALAR,
* YOU ARE AGREEING TO THESE TERMS AND CONDITIONS.
*
* No portion of this work may be used by any commercial entity, or for any
* commercial purpose, without the prior, written permission of SimpleScalar,
* LLC ([email protected]). Nonprofit and noncommercial use is permitted
* as described below.
*
* 1. SimpleScalar is provided AS IS, with no warranty of any kind, express
* or implied. The user of the program accepts full responsibility for the
* application of the program and the use of any results.
*
* 2. Nonprofit and noncommercial use is encouraged. SimpleScalar may be
* downloaded, compiled, executed, copied, and modified solely for nonprofit,
* educational, noncommercial research, and noncommercial scholarship
* purposes provided that this notice in its entirety accompanies all copies.
* Copies of the modified software can be delivered to persons who use it
* solely for nonprofit, educational, noncommercial research, and
* noncommercial scholarship purposes provided that this notice in its
* entirety accompanies all copies.
*
* 3. ALL COMMERCIAL USE, AND ALL USE BY FOR PROFIT ENTITIES, IS EXPRESSLY
* PROHIBITED WITHOUT A LICENSE FROM SIMPLESCALAR, LLC ([email protected]).
*
* 4. No nonprofit user may place any restrictions on the use of this software,
* including as modified by the user, by any other authorized user.
*
* 5. Noncommercial and nonprofit users may distribute copies of SimpleScalar
* in compiled or executable form as set forth in Section 2, provided that
* either: (A) it is accompanied by the corresponding machine-readable source
* code, or (B) it is accompanied by a written offer, with no time limit, to
* give anyone a machine-readable copy of the corresponding source code in
* return for reimbursement of the cost of distribution. This written offer
* must permit verbatim duplication by anyone, or (C) it is distributed by
* someone who received only the executable form, and is accompanied by a
* copy of the written offer of source code.
*
* 6. SimpleScalar was developed by Todd M. Austin, Ph.D. The tool suite is
* currently maintained by SimpleScalar LLC ([email protected]). US Mail:
* 2395 Timbercrest Court, Ann Arbor, MI 48105.
*
* Copyright (C) 2000-2001 by The Regents of The University of Michigan.
* Copyright (C) 1994-2001 by Todd M. Austin, Ph.D. and SimpleScalar, LLC.
*/
#include "mase.h"
/* default memory state accessor, used by DLite */
char * /* err str, NULL for no err */
mase_mem_obj(struct mem_t *mem, /* memory space to access */
int is_write, /* access type */
md_addr_t addr, /* address to access */
char *p, /* input/output buffer */
int nbytes) /* size of access */
{
if (is_write) panic("This routine does not expect a write to memory");
/* access memory */
mem_access(mem, Read, addr, p, nbytes);
/* no error */
return NULL;
}
/* default register state accessor, used by DLite */
char * /* err str, NULL for no err */
mase_reg_obj(struct regs_t *regs, /* registers to access */
int is_write, /* access type */
enum md_reg_type rt, /* reg bank to probe */
int reg, /* register number */
struct eval_value_t *val) /* input, output */
{
/* The only option in DLite to write a register is to write the PC,
* but MASE does not support this feature since the debugger is at
* commit. */
if (is_write) return "continue at addr not supported in MASE";
switch (rt) {
case rt_gpr:
if (reg < 0 || reg >= MD_NUM_IREGS)
return "register number out of range";
val->type = et_uint;
val->value.as_uint = regs->regs_R[reg];
break;
case rt_fpr:
if (reg < 0 || reg >= MD_NUM_FREGS)
return "register number out of range";
val->type = et_float;
#if defined(TARGET_PISA)
val->value.as_float = regs->regs_F.f[reg];
#elif defined(TARGET_ALPHA)
val->value.as_float = regs->regs_F.d[reg];
#endif
break;
case rt_lpr:
if (reg < 0 || reg >= MD_NUM_FREGS)
return "register number out of range";
val->type = et_uint;
#if defined(TARGET_PISA)
val->value.as_uint = regs->regs_F.l[reg];
#elif defined(TARGET_ALPHA)
val->value.as_uint = regs->regs_F.q[reg];
#endif
break;
case rt_ctrl:
if (reg < 0 || reg >= MD_NUM_CREGS)
return "register number out of range";
val->type = et_uint;
switch (reg) {
#if defined(TARGET_PISA)
case 0: val->value.as_uint = regs->regs_C.hi; break;
case 1: val->value.as_uint = regs->regs_C.lo; break;
case 2: val->value.as_uint = regs->regs_C.fcc; break;
#elif defined(TARGET_ALPHA)
case 0: val->value.as_uint = regs->regs_C.fpcr; break;
case 1: val->value.as_uint = regs->regs_C.uniq; break;
#endif
default: fatal("Invalid control register\n");
}
break;
case rt_PC:
val->type = et_addr;
val->value.as_addr = regs->regs_PC;
break;
case rt_NPC:
val->type = et_addr;
val->value.as_addr = regs->regs_NPC;
break;
default:
panic("bogus register bank");
}
/* no error */
return NULL;
}
/* default machine state accessor, used by DLite */
char * /* err str, NULL for no err */
mase_mstate_obj(FILE *stream, /* output stream */
char *cmd, /* optional command string */
struct regs_t *regs, /* registers to access */
struct mem_t *mem) /* memory space to access */
{
if (!stream) stream = stderr;
if (!cmd || !strcmp(cmd, "help"))
fprintf(stream,
"mstate commands:\n"
"\n"
" mstate help - show all machine-specific commands (this list)\n"
" mstate stats - dump all statistical variables\n"
" mstate fetch - dump contents of fetch stage\n"
" mstate ifq - dump contents of instruction fetch queue\n"
" mstate isq - dump contents of instruction state queue\n"
" mstate rename - dump contents of the rename table\n"
" mstate rob - dump contents of the reorder buffer\n"
" mstate lsq - dump contents of the load/store queue\n"
" mstate rs - dump contents of the reservation stations\n"
" mstate readyq - dump contents of ready instruction queue\n"
" mstate eventq - dump contents of event queue\n"
" mstate res - dump current functional unit resource states\n"
"\n"
);
else if (!strcmp(cmd, "stats")) {
/* just dump intermediate stats */
sim_print_stats(stream);
}
else if (!strcmp(cmd, "fetch")) {
/* dump fetch stage contents */
fetch_dump(stream);
}
else if (!strcmp(cmd, "ifq")) {
/* dump IFQ contents */
ifq_dump(stream);
}
else if (!strcmp(cmd, "isq")) {
/* dump ISQ contents */
isq_dump(stream);
}
else if (!strcmp(cmd, "rename")) {
/* dump rename table contents */
rename_dump(stream);
}
else if (!strcmp(cmd, "rob")) {
/* dump ROB contents */
rob_dump(stream);
}
else if (!strcmp(cmd, "lsq")) {
/* dump LSQ contents */
lsq_dump(stream);
}
else if (!strcmp(cmd, "rs")) {
/* dump RS contents */
rs_dump(stream);
}
else if (!strcmp(cmd, "readyq")) {
/* dump ready queue contents */
readyq_dump(stream);
}
else if (!strcmp(cmd, "eventq")) {
/* dump event queue contents */
eventq_dump(stream);
}
else if (!strcmp(cmd, "res")) {
/* dump resource state */
res_dump(fu_pool, stream);
}
else
return "unknown mstate command";
/* no error */
return NULL;
}