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ocaml/byterun/instrtrace.c

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C
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/***********************************************************************/
/* */
/* OCaml */
/* */
/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
/* */
/* Copyright 1996 Institut National de Recherche en Informatique et */
/* en Automatique. All rights reserved. This file is distributed */
/* under the terms of the GNU Library General Public License, with */
/* the special exception on linking described in file ../LICENSE. */
/* */
/***********************************************************************/
/* Trace the instructions executed */
#ifdef DEBUG
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "caml/instrtrace.h"
#include "caml/instruct.h"
#include "caml/misc.h"
#include "caml/mlvalues.h"
#include "caml/opnames.h"
#include "caml/prims.h"
#include "caml/stacks.h"
#include "caml/startup_aux.h"
extern code_t caml_start_code;
intnat caml_icount = 0;
void caml_stop_here () {}
void caml_disasm_instr(pc)
code_t pc;
{
int instr = *pc;
printf("%6ld %s", (long) (pc - caml_start_code),
instr < 0 || instr > STOP ? "???" : names_of_instructions[instr]);
pc++;
switch(instr) {
/* Instructions with one integer operand */
case PUSHACC: case ACC: case POP: case ASSIGN:
case PUSHENVACC: case ENVACC: case PUSH_RETADDR: case APPLY:
case APPTERM1: case APPTERM2: case APPTERM3: case RETURN:
case GRAB: case PUSHGETGLOBAL: case GETGLOBAL: case SETGLOBAL:
case PUSHATOM: case ATOM: case MAKEBLOCK1: case MAKEBLOCK2:
case MAKEBLOCK3: case MAKEFLOATBLOCK:
case GETFIELD: case SETFIELD: case GETFLOATFIELD: case SETFLOATFIELD:
case BRANCH: case BRANCHIF: case BRANCHIFNOT: case PUSHTRAP:
case CONSTINT: case PUSHCONSTINT: case OFFSETINT: case OFFSETREF:
case OFFSETCLOSURE: case PUSHOFFSETCLOSURE:
printf(" %d\n", pc[0]); break;
/* Instructions with two operands */
case APPTERM: case CLOSURE: case CLOSUREREC: case PUSHGETGLOBALFIELD:
case GETGLOBALFIELD: case MAKEBLOCK:
case BEQ: case BNEQ: case BLTINT: case BLEINT: case BGTINT: case BGEINT:
case BULTINT: case BUGEINT:
printf(" %d, %d\n", pc[0], pc[1]); break;
/* Instructions with a C primitive as operand */
case C_CALLN:
printf(" %d,", pc[0]); pc++;
/* fallthrough */
case C_CALL1: case C_CALL2: case C_CALL3: case C_CALL4: case C_CALL5:
if (pc[0] < 0 || pc[0] >= caml_prim_name_table.size)
printf(" unknown primitive %d\n", pc[0]);
else
printf(" %s\n", (char *) caml_prim_name_table.contents[pc[0]]);
break;
default:
printf("\n");
}
fflush (stdout);
}
char * caml_instr_string (code_t pc)
{
static char buf[256];
char nambuf[128];
int instr = *pc;
char *nam;
nam = (instr < 0 || instr > STOP)
? (snprintf (nambuf, sizeof(nambuf), "???%d", instr), nambuf)
: names_of_instructions[instr];
pc++;
switch (instr) {
/* Instructions with one integer operand */
case PUSHACC:
case ACC:
case POP:
case ASSIGN:
case PUSHENVACC:
case ENVACC:
case PUSH_RETADDR:
case APPLY:
case APPTERM1:
case APPTERM2:
case APPTERM3:
case RETURN:
case GRAB:
case PUSHGETGLOBAL:
case GETGLOBAL:
case SETGLOBAL:
case PUSHATOM:
case ATOM:
case MAKEBLOCK1:
case MAKEBLOCK2:
case MAKEBLOCK3:
case MAKEFLOATBLOCK:
case GETFIELD:
case SETFIELD:
case GETFLOATFIELD:
case SETFLOATFIELD:
case BRANCH:
case BRANCHIF:
case BRANCHIFNOT:
case PUSHTRAP:
case CONSTINT:
case PUSHCONSTINT:
case OFFSETINT:
case OFFSETREF:
case OFFSETCLOSURE:
case PUSHOFFSETCLOSURE:
snprintf(buf, sizeof(buf), "%s %d", nam, pc[0]);
break;
/* Instructions with two operands */
case APPTERM:
case CLOSURE:
case CLOSUREREC:
case PUSHGETGLOBALFIELD:
case GETGLOBALFIELD:
case MAKEBLOCK:
case BEQ:
case BNEQ:
case BLTINT:
case BLEINT:
case BGTINT:
case BGEINT:
case BULTINT:
case BUGEINT:
snprintf(buf, sizeof(buf), "%s %d, %d", nam, pc[0], pc[1]);
break;
case SWITCH:
snprintf(buf, sizeof(buf), "SWITCH sz%#lx=%ld::ntag%ld nint%ld",
(long) pc[0], (long) pc[0], (unsigned long) pc[0] >> 16,
(unsigned long) pc[0] & 0xffff);
break;
/* Instructions with a C primitive as operand */
case C_CALLN:
snprintf(buf, sizeof(buf), "%s %d,", nam, pc[0]);
pc++;
/* fallthrough */
case C_CALL1:
case C_CALL2:
case C_CALL3:
case C_CALL4:
case C_CALL5:
if (pc[0] < 0 || pc[0] >= caml_prim_name_table.size)
snprintf(buf, sizeof(buf), "%s unknown primitive %d", nam, pc[0]);
else
snprintf(buf, sizeof(buf), "%s %s",
nam, (char *) caml_prim_name_table.contents[pc[0]]);
break;
default:
snprintf(buf, sizeof(buf), "%s", nam);
break;
};
return buf;
}
void
caml_trace_value_file (value v, code_t prog, int proglen, FILE * f)
{
int i;
fprintf (f, "%#lx", v);
if (!v)
return;
if (prog && v % sizeof (int) == 0
&& (code_t) v >= prog
&& (code_t) v < (code_t) ((char *) prog + proglen))
fprintf (f, "=code@%" ARCH_INTNAT_PRINTF_FORMAT "d", (code_t) v - prog);
else if (Is_long (v))
fprintf (f, "=long%" ARCH_INTNAT_PRINTF_FORMAT "d", Long_val (v));
else if ((void*)v >= (void*)caml_stack_low
&& (void*)v < (void*)caml_stack_high)
fprintf (f, "=stack_%" ARCH_INTNAT_PRINTF_FORMAT "d",
(intnat*)caml_stack_high - (intnat*)v);
else if (Is_block (v)) {
int s = Wosize_val (v);
int tg = Tag_val (v);
int l = 0;
switch (tg) {
case Closure_tag:
fprintf (f, "=closure[s%d,cod%" ARCH_INTNAT_PRINTF_FORMAT "d]",
s, (code_t) (Code_val (v)) - prog);
goto displayfields;
case String_tag:
l = caml_string_length (v);
fprintf (f, "=string[s%dL%d]'", s, l);
for (i = 0; i < ((l>0x1f)?0x1f:l) ; i++) {
if (isprint (Byte (v, i)))
putc (Byte (v, i), f);
else
putc ('?', f);
};
fprintf (f, "'");
goto displayfields;
case Double_tag:
fprintf (f, "=float[s%d]=%g", s, Double_val (v));
goto displayfields;
case Double_array_tag:
fprintf (f, "=floatarray[s%d]", s);
for (i = 0; i < ((s>0xf)?0xf:s); i++)
fprintf (f, " %g", Double_field (v, i));
goto displayfields;
case Abstract_tag:
fprintf (f, "=abstract[s%d]", s);
goto displayfields;
case Custom_tag:
fprintf (f, "=custom[s%d]", s);
goto displayfields;
default:
fprintf (f, "=block<T%d/s%d>", tg, s);
displayfields:
if (s > 0)
fputs ("=(", f);
for (i = 0; i < s; i++) {
if (i > 20) {
fputs ("....", f);
break;
};
if (i > 0)
putc (' ', f);
fprintf (f, "%#lx", Field (v, i));
};
if (s > 0)
putc (')', f);
};
}
}
void
caml_trace_accu_sp_file (value accu, value * sp, code_t prog, int proglen,
FILE * f)
{
int i;
value *p;
fprintf (f, "accu=");
caml_trace_value_file (accu, prog, proglen, f);
fprintf (f, "\n sp=%#" ARCH_INTNAT_PRINTF_FORMAT "x "
"@%" ARCH_INTNAT_PRINTF_FORMAT "d:",
(intnat) sp, caml_stack_high - sp);
for (p = sp, i = 0; i < 12 + (1 << caml_trace_level) && p < caml_stack_high;
p++, i++) {
fprintf (f, "\n[%ld] ", caml_stack_high - p);
caml_trace_value_file (*p, prog, proglen, f);
};
putc ('\n', f);
fflush (f);
}
#endif /* DEBUG */
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