apptraceutil.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <stdio.h>
#include <string.h>
#include <floatingpoint.h>
#include <libctf.h>
#include <apptrace.h>
typedef struct printarg {
ulong_t pa_addr;
ctf_file_t *pa_ctfp;
int pa_depth;
int pa_nest;
} printarg_t;
typedef void printarg_f(ctf_id_t, ulong_t, printarg_t *);
static int elt_print(const char *, ctf_id_t, ulong_t, int, void *);
const char *
type_name(ctf_file_t *ctfp, ctf_id_t type, char *buf, size_t len)
{
if (ctf_type_name(ctfp, type, buf, len) == NULL)
(void) snprintf(buf, len, "<%ld>", type);
return (buf);
}
void
print_value(ctf_file_t *ctfp, ctf_id_t type, ulong_t value)
{
ctf_id_t rtype = ctf_type_resolve(ctfp, type);
ctf_encoding_t e;
(void) fprintf(ABISTREAM, "0x%p", (void *)value);
if (ctf_type_kind(ctfp, rtype) == CTF_K_POINTER) {
type = ctf_type_reference(ctfp, rtype);
rtype = ctf_type_resolve(ctfp, type);
if (ctf_type_encoding(ctfp, rtype, &e) == 0 &&
(e.cte_format & (CTF_INT_CHAR | CTF_INT_SIGNED)) ==
(CTF_INT_CHAR | CTF_INT_SIGNED) && e.cte_bits == NBBY) {
if ((char *)value != NULL)
(void) fprintf(ABISTREAM,
" \"%s\"", (char *)value);
else
(void) fprintf(ABISTREAM, " <NULL>");
(void) fflush(ABISTREAM);
return;
}
if (ctf_type_kind(ctfp, rtype) == CTF_K_STRUCT) {
printarg_t pa;
(void) fprintf(ABISTREAM, " ");
pa.pa_addr = value;
pa.pa_ctfp = ctfp;
pa.pa_nest = 0;
pa.pa_depth = 0;
(void) ctf_type_visit(ctfp, rtype, elt_print, &pa);
(void) fprintf(ABISTREAM, "\t}");
(void) fflush(ABISTREAM);
return;
}
}
(void) fflush(ABISTREAM);
}
static void
print_bitfield(ulong_t off, ctf_encoding_t *ep)
{
uint64_t mask = (1ULL << ep->cte_bits) - 1;
uint64_t value = 0;
#ifdef _BIG_ENDIAN
size_t size = (ep->cte_bits + (NBBY - 1)) / NBBY;
uint8_t *buf = (uint8_t *)&value;
#endif
uint8_t shift;
/*
* On big-endian machines, we need to adjust the buf pointer to refer
* to the lowest 'size' bytes in 'value', and we need shift based on
* the offset from the end of the data, not the offset of the start.
*/
#ifdef _BIG_ENDIAN
buf += sizeof (value) - size;
off += ep->cte_bits;
#endif
shift = off % NBBY;
/*
* Offsets are counted from opposite ends on little- and
* big-endian machines.
*/
#ifdef _BIG_ENDIAN
shift = NBBY - shift;
#endif
/*
* If the bits we want do not begin on a byte boundary, shift the data
* right so that the value is in the lowest 'cte_bits' of 'value'.
*/
if (off % NBBY != 0)
value >>= shift;
(void) fprintf(ABISTREAM, "%llu", (unsigned long long)(value & mask));
(void) fflush(ABISTREAM);
}
/* ARGSUSED */
static void
print_int(ctf_id_t base, ulong_t off, printarg_t *pap)
{
ctf_file_t *ctfp = pap->pa_ctfp;
ctf_encoding_t e;
size_t size;
ulong_t addr = pap->pa_addr + off / NBBY;
if (ctf_type_encoding(ctfp, base, &e) == CTF_ERR) {
(void) fprintf(ABISTREAM, "???");
(void) fflush(ABISTREAM);
return;
}
if (e.cte_format & CTF_INT_VARARGS) {
(void) fprintf(ABISTREAM, "...\n");
(void) fflush(ABISTREAM);
return;
}
size = e.cte_bits / NBBY;
if (size > 8 || (e.cte_bits % NBBY) != 0 || (size & (size - 1)) != 0) {
print_bitfield(off, &e);
return;
}
if (((e).cte_format & (CTF_INT_CHAR | CTF_INT_SIGNED)) ==
(CTF_INT_CHAR | CTF_INT_SIGNED) && (e).cte_bits == NBBY) {
(void) fprintf(ABISTREAM, "'%c'", *(char *)addr);
(void) fflush(ABISTREAM);
return;
}
switch (size) {
case sizeof (uint8_t):
(void) fprintf(ABISTREAM, "%#x", *(uint8_t *)addr);
break;
case sizeof (uint16_t):
(void) fprintf(ABISTREAM, "%#x", *(uint16_t *)addr);
break;
case sizeof (uint32_t):
(void) fprintf(ABISTREAM, "%#x", *(uint32_t *)addr);
break;
case sizeof (uint64_t):
(void) fprintf(ABISTREAM, "%#llx",
(unsigned long long)*(uint64_t *)addr);
break;
}
(void) fflush(ABISTREAM);
}
/* ARGSUSED */
static void
print_float(ctf_id_t base, ulong_t off, printarg_t *pap)
{
ctf_file_t *ctfp = pap->pa_ctfp;
ctf_encoding_t e;
union {
float f;
double d;
long double ld;
} u;
u.f = 0;
if (ctf_type_encoding(ctfp, base, &e) == 0) {
if (e.cte_format == CTF_FP_SINGLE &&
e.cte_bits == sizeof (float) * NBBY) {
(void) fprintf(ABISTREAM, "%+.7e", u.f);
} else if (e.cte_format == CTF_FP_DOUBLE &&
e.cte_bits == sizeof (double) * NBBY) {
(void) fprintf(ABISTREAM, "%+.7e", u.d);
} else if (e.cte_format == CTF_FP_LDOUBLE &&
e.cte_bits == sizeof (long double) * NBBY) {
(void) fprintf(ABISTREAM,
"%+.16LE", u.ld);
}
}
(void) fflush(ABISTREAM);
}
/* ARGSUSED */
static void
print_ptr(ctf_id_t base, ulong_t off, printarg_t *pap)
{
ctf_file_t *ctfp = pap->pa_ctfp;
ulong_t addr = pap->pa_addr + off / NBBY;
ctf_encoding_t e;
if (ctf_type_kind(ctfp, base) != CTF_K_POINTER)
return;
if ((base = ctf_type_reference(ctfp, base)) == CTF_ERR)
return;
if ((base = ctf_type_resolve(ctfp, base)) == CTF_ERR)
return;
if (ctf_type_encoding(ctfp, base, &e) != 0)
return;
if (((e).cte_format & (CTF_INT_CHAR | CTF_INT_SIGNED)) ==
(CTF_INT_CHAR | CTF_INT_SIGNED) && (e).cte_bits == NBBY)
(void) fprintf(ABISTREAM, "'%c'", *(char *)addr);
(void) fflush(ABISTREAM);
}
/* ARGSUSED */
static void
print_array(ctf_id_t base, ulong_t off, printarg_t *pap)
{
ulong_t addr = pap->pa_addr + off / NBBY;
(void) fprintf(ABISTREAM, "0x%p", (void *)addr);
(void) fflush(ABISTREAM);
}
/* ARGSUSED */
static void
print_sou(ctf_id_t base, ulong_t off, printarg_t *pap)
{
(void) fprintf(ABISTREAM, "{");
}
/* ARGSUSED */
static void
print_enum(ctf_id_t base, ulong_t off, printarg_t *pap)
{
ctf_file_t *ctfp = pap->pa_ctfp;
const char *ename;
int value = 0;
if ((ename = ctf_enum_name(ctfp, base, value)) != NULL)
(void) fprintf(ABISTREAM, "%s", ename);
else
(void) fprintf(ABISTREAM, "%d", value);
(void) fflush(ABISTREAM);
}
/* ARGSUSED */
static void
print_tag(ctf_id_t base, ulong_t off, printarg_t *pap)
{
(void) fprintf(ABISTREAM, "; ");
}
static printarg_f *const printfuncs[] = {
print_int, /* CTF_K_INTEGER */
print_float, /* CTF_K_FLOAT */
print_ptr, /* CTF_K_POINTER */
print_array, /* CTF_K_ARRAY */
print_ptr, /* CTF_K_FUNCTION */
print_sou, /* CTF_K_STRUCT */
print_sou, /* CTF_K_UNION */
print_enum, /* CTF_K_ENUM */
print_tag /* CTF_K_FORWARD */
};
static int
elt_print(const char *name, ctf_id_t id, ulong_t off, int depth, void *data)
{
char type[256];
int kind, d;
ctf_id_t base;
printarg_t *pap = data;
ctf_file_t *ctfp = pap->pa_ctfp;
for (d = pap->pa_depth - 1; d >= depth; d--) {
(void) fprintf(ABISTREAM, "%*s}\n",
(depth + pap->pa_nest) * 4, "");
}
if ((base = ctf_type_resolve(ctfp, id)) == CTF_ERR ||
(kind = ctf_type_kind(ctfp, base)) == CTF_ERR)
return (-1);
if (ctf_type_name(ctfp, id, type, sizeof (type)) == NULL)
(void) snprintf(type, sizeof (type), "<%ld>", id);
(void) fprintf(ABISTREAM, "%*s", (depth + pap->pa_nest) * 4, "");
if (name[0] != '\0')
(void) fprintf(ABISTREAM, "\t%s: ", name);
(void) fprintf(ABISTREAM, "(%s) ", type);
printfuncs[kind - 1](base, off, pap);
(void) fprintf(ABISTREAM, "\n");
(void) fflush(ABISTREAM);
return (0);
}