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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 Lesser General Public License version 2.1, with the */
/* special exception on linking described in the file LICENSE. */
/* */
/**************************************************************************/
#define CAML_INTERNALS
/* Trace the instructions executed */
#ifdef DEBUG
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "caml/fiber.h"
#include "caml/domain.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/startup.h"
#include "caml/backtrace_prim.h"
extern code_t caml_start_code;
CAMLthread_local intnat caml_icount = 0;
void caml_stop_here (void)
{
}
char * caml_instr_string (code_t pc);
void
caml_event_trace(code_t pc)
{
struct ev_info *evi = caml_exact_event_for_location(pc);
if (evi == NULL)
return;
printf("[%02d] Event at PC:%ld, Def:%s, File: %s, Line: %d, Chars:%d-%d\n",
Caml_state->id,
(long) (pc - caml_start_code),
evi->ev_defname, evi->ev_filename,
evi->ev_start_lnum, evi->ev_start_chr, evi->ev_end_offset);
fflush (stdout);
}
void caml_disasm_instr(code_t pc)
{
char buf[256];
char opbuf[128];
int instr = *pc;
snprintf(opbuf, sizeof(opbuf), "%6ld %s", (long) (pc - caml_start_code),
(instr < 0 || instr >= FIRST_UNIMPLEMENTED_OP) ?
"???" : 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:
case RESUMETERM: case REPERFORMTERM:
snprintf(buf, sizeof(buf), "%s %d\n", opbuf, 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\n", opbuf, pc[0], pc[1]); break;
/* Instructions with a C primitive as operand */
case C_CALLN:
snprintf(buf, sizeof(buf), "%s %d,", opbuf, 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\n", opbuf, pc[0]);
else
snprintf(buf, sizeof(buf), "%s %s\n", opbuf,
(char *) caml_prim_name_table.contents[pc[0]]);
break;
case SWITCH:
snprintf(buf, sizeof(buf), "%s ntag=%lu nint=%lu\n",
opbuf,
(unsigned long) pc[0] >> 16,
(unsigned long) pc[0] & 0xffff);
break;
default:
snprintf(buf, sizeof(buf), "%s\n", opbuf);
}
printf("[%02d] %s", Caml_state->id, buf);
fflush (stdout);
}
void
caml_trace_value_file (value v, code_t prog, asize_t proglen, FILE * f)
{
fprintf (f, "%#" ARCH_INTNAT_PRINTF_FORMAT "x", 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@%ld", (long) ((code_t) v - prog));
else if (Is_long (v))
fprintf (f, "=long%" ARCH_INTNAT_PRINTF_FORMAT "d", Long_val (v));
else if (Stack_base(Caml_state->current_stack) <= (value*)v &&
(value*)v < Stack_high(Caml_state->current_stack))
fprintf (f, "=stack_%ld",
(long)((intnat*)Stack_high(Caml_state->current_stack)-(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%ld]",
s, (long) ((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 (int i = 0; i < ((l>0x1f)?0x1f:l) ; i++) {
if (isprint ((int) 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 (int i = 0; i < ((s>0xf)?0xf:s); i++)
fprintf (f, " %g", Double_flat_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 (int i = 0; i < s; i++) {
if (i > 20) {
fputs ("....", f);
break;
};
if (i > 0)
putc (' ', f);
fprintf (f, "%#" ARCH_INTNAT_PRINTF_FORMAT "x", Field (v, i));
};
if (s > 0)
putc (')', f);
};
}
}
void
caml_trace_accu_sp_file (value accu, value * sp, code_t prog, asize_t 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 @%ld:",
(intnat) sp, (long) (Stack_high(Caml_state->current_stack) - sp));
for (p = sp, i = 0;
i < 12 + (1 << caml_params->trace_level) &&
p < Stack_high(Caml_state->current_stack);
p++, i++) {
fprintf (f, "\n[%ld] ", (long) (Stack_high(Caml_state->current_stack) - p));
caml_trace_value_file (*p, prog, proglen, f);
};
putc ('\n', f);
fflush (f);
}
#endif /* DEBUG */
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