freebsd-nq/cddl/contrib/opensolaris/lib/libdtrace/common/dt_dis.c
John Birrell 6ff6d951ad This commit was generated by cvs2svn to compensate for changes in r178479,
which included commits to RCS files with non-trunk default branches.
2008-04-25 09:04:09 +00:00

512 lines
14 KiB
C

/*
* 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 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <strings.h>
#include <stdio.h>
#include <dt_impl.h>
#include <dt_ident.h>
/*ARGSUSED*/
static void
dt_dis_log(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp)
{
(void) fprintf(fp, "%-4s %%r%u, %%r%u, %%r%u", name,
DIF_INSTR_R1(in), DIF_INSTR_R2(in), DIF_INSTR_RD(in));
}
/*ARGSUSED*/
static void
dt_dis_branch(const dtrace_difo_t *dp, const char *name,
dif_instr_t in, FILE *fp)
{
(void) fprintf(fp, "%-4s %u", name, DIF_INSTR_LABEL(in));
}
/*ARGSUSED*/
static void
dt_dis_load(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp)
{
(void) fprintf(fp, "%-4s [%%r%u], %%r%u", name,
DIF_INSTR_R1(in), DIF_INSTR_RD(in));
}
/*ARGSUSED*/
static void
dt_dis_store(const dtrace_difo_t *dp, const char *name,
dif_instr_t in, FILE *fp)
{
(void) fprintf(fp, "%-4s %%r%u, [%%r%u]", name,
DIF_INSTR_R1(in), DIF_INSTR_RD(in));
}
/*ARGSUSED*/
static void
dt_dis_str(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp)
{
(void) fprintf(fp, "%s", name);
}
/*ARGSUSED*/
static void
dt_dis_r1rd(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp)
{
(void) fprintf(fp, "%-4s %%r%u, %%r%u", name,
DIF_INSTR_R1(in), DIF_INSTR_RD(in));
}
/*ARGSUSED*/
static void
dt_dis_cmp(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp)
{
(void) fprintf(fp, "%-4s %%r%u, %%r%u", name,
DIF_INSTR_R1(in), DIF_INSTR_R2(in));
}
/*ARGSUSED*/
static void
dt_dis_tst(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp)
{
(void) fprintf(fp, "%-4s %%r%u", name, DIF_INSTR_R1(in));
}
static const char *
dt_dis_varname(const dtrace_difo_t *dp, uint_t id, uint_t scope)
{
const dtrace_difv_t *dvp = dp->dtdo_vartab;
uint_t i;
for (i = 0; i < dp->dtdo_varlen; i++, dvp++) {
if (dvp->dtdv_id == id && dvp->dtdv_scope == scope) {
if (dvp->dtdv_name < dp->dtdo_strlen)
return (dp->dtdo_strtab + dvp->dtdv_name);
break;
}
}
return (NULL);
}
static uint_t
dt_dis_scope(const char *name)
{
switch (name[2]) {
case 'l': return (DIFV_SCOPE_LOCAL);
case 't': return (DIFV_SCOPE_THREAD);
case 'g': return (DIFV_SCOPE_GLOBAL);
default: return (-1u);
}
}
static void
dt_dis_lda(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp)
{
uint_t var = DIF_INSTR_R1(in);
const char *vname;
(void) fprintf(fp, "%-4s DT_VAR(%u), %%r%u, %%r%u", name,
var, DIF_INSTR_R2(in), DIF_INSTR_RD(in));
if ((vname = dt_dis_varname(dp, var, dt_dis_scope(name))) != NULL)
(void) fprintf(fp, "\t\t! DT_VAR(%u) = \"%s\"", var, vname);
}
static void
dt_dis_ldv(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp)
{
uint_t var = DIF_INSTR_VAR(in);
const char *vname;
(void) fprintf(fp, "%-4s DT_VAR(%u), %%r%u",
name, var, DIF_INSTR_RD(in));
if ((vname = dt_dis_varname(dp, var, dt_dis_scope(name))) != NULL)
(void) fprintf(fp, "\t\t! DT_VAR(%u) = \"%s\"", var, vname);
}
static void
dt_dis_stv(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp)
{
uint_t var = DIF_INSTR_VAR(in);
const char *vname;
(void) fprintf(fp, "%-4s %%r%u, DT_VAR(%u)",
name, DIF_INSTR_RS(in), var);
if ((vname = dt_dis_varname(dp, var, dt_dis_scope(name))) != NULL)
(void) fprintf(fp, "\t\t! DT_VAR(%u) = \"%s\"", var, vname);
}
static void
dt_dis_setx(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp)
{
uint_t intptr = DIF_INSTR_INTEGER(in);
(void) fprintf(fp, "%-4s DT_INTEGER[%u], %%r%u", name,
intptr, DIF_INSTR_RD(in));
if (intptr < dp->dtdo_intlen) {
(void) fprintf(fp, "\t\t! 0x%llx",
(u_longlong_t)dp->dtdo_inttab[intptr]);
}
}
static void
dt_dis_sets(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp)
{
uint_t strptr = DIF_INSTR_STRING(in);
(void) fprintf(fp, "%-4s DT_STRING[%u], %%r%u", name,
strptr, DIF_INSTR_RD(in));
if (strptr < dp->dtdo_strlen)
(void) fprintf(fp, "\t\t! \"%s\"", dp->dtdo_strtab + strptr);
}
/*ARGSUSED*/
static void
dt_dis_ret(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp)
{
(void) fprintf(fp, "%-4s %%r%u", name, DIF_INSTR_RD(in));
}
/*ARGSUSED*/
static void
dt_dis_call(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp)
{
uint_t subr = DIF_INSTR_SUBR(in);
(void) fprintf(fp, "%-4s DIF_SUBR(%u), %%r%u\t\t! %s",
name, subr, DIF_INSTR_RD(in), dtrace_subrstr(NULL, subr));
}
/*ARGSUSED*/
static void
dt_dis_pushts(const dtrace_difo_t *dp,
const char *name, dif_instr_t in, FILE *fp)
{
static const char *const tnames[] = { "D type", "string" };
uint_t type = DIF_INSTR_TYPE(in);
(void) fprintf(fp, "%-4s DT_TYPE(%u), %%r%u, %%r%u",
name, type, DIF_INSTR_R2(in), DIF_INSTR_RS(in));
if (type < sizeof (tnames) / sizeof (tnames[0]))
(void) fprintf(fp, "\t! DT_TYPE(%u) = %s", type, tnames[type]);
}
static void
dt_dis_xlate(const dtrace_difo_t *dp,
const char *name, dif_instr_t in, FILE *fp)
{
uint_t xlr = DIF_INSTR_XLREF(in);
(void) fprintf(fp, "%-4s DT_XLREF[%u], %%r%u",
name, xlr, DIF_INSTR_RD(in));
if (xlr < dp->dtdo_xlmlen) {
(void) fprintf(fp, "\t\t! DT_XLREF[%u] = %u.%s", xlr,
(uint_t)dp->dtdo_xlmtab[xlr]->dn_membexpr->dn_xlator->dx_id,
dp->dtdo_xlmtab[xlr]->dn_membname);
}
}
static char *
dt_dis_typestr(const dtrace_diftype_t *t, char *buf, size_t len)
{
char kind[16], ckind[16];
switch (t->dtdt_kind) {
case DIF_TYPE_CTF:
(void) strcpy(kind, "D type");
break;
case DIF_TYPE_STRING:
(void) strcpy(kind, "string");
break;
default:
(void) snprintf(kind, sizeof (kind), "0x%x", t->dtdt_kind);
}
switch (t->dtdt_ckind) {
case CTF_K_UNKNOWN:
(void) strcpy(ckind, "unknown");
break;
case CTF_K_INTEGER:
(void) strcpy(ckind, "integer");
break;
case CTF_K_FLOAT:
(void) strcpy(ckind, "float");
break;
case CTF_K_POINTER:
(void) strcpy(ckind, "pointer");
break;
case CTF_K_ARRAY:
(void) strcpy(ckind, "array");
break;
case CTF_K_FUNCTION:
(void) strcpy(ckind, "function");
break;
case CTF_K_STRUCT:
(void) strcpy(ckind, "struct");
break;
case CTF_K_UNION:
(void) strcpy(ckind, "union");
break;
case CTF_K_ENUM:
(void) strcpy(ckind, "enum");
break;
case CTF_K_FORWARD:
(void) strcpy(ckind, "forward");
break;
case CTF_K_TYPEDEF:
(void) strcpy(ckind, "typedef");
break;
case CTF_K_VOLATILE:
(void) strcpy(ckind, "volatile");
break;
case CTF_K_CONST:
(void) strcpy(ckind, "const");
break;
case CTF_K_RESTRICT:
(void) strcpy(ckind, "restrict");
break;
default:
(void) snprintf(ckind, sizeof (ckind), "0x%x", t->dtdt_ckind);
}
if (t->dtdt_flags & DIF_TF_BYREF) {
(void) snprintf(buf, len, "%s (%s) by ref (size %lu)",
kind, ckind, (ulong_t)t->dtdt_size);
} else {
(void) snprintf(buf, len, "%s (%s) (size %lu)",
kind, ckind, (ulong_t)t->dtdt_size);
}
return (buf);
}
static void
dt_dis_rtab(const char *rtag, const dtrace_difo_t *dp, FILE *fp,
const dof_relodesc_t *rp, uint32_t len)
{
(void) fprintf(fp, "\n%-4s %-8s %-8s %s\n",
rtag, "OFFSET", "DATA", "NAME");
for (; len != 0; len--, rp++) {
(void) fprintf(fp, "%-4u %-8llu %-8llu %s\n",
rp->dofr_type, (u_longlong_t)rp->dofr_offset,
(u_longlong_t)rp->dofr_data,
&dp->dtdo_strtab[rp->dofr_name]);
}
}
void
dt_dis(const dtrace_difo_t *dp, FILE *fp)
{
static const struct opent {
const char *op_name;
void (*op_func)(const dtrace_difo_t *, const char *,
dif_instr_t, FILE *);
} optab[] = {
{ "(illegal opcode)", dt_dis_str },
{ "or", dt_dis_log }, /* DIF_OP_OR */
{ "xor", dt_dis_log }, /* DIF_OP_XOR */
{ "and", dt_dis_log }, /* DIF_OP_AND */
{ "sll", dt_dis_log }, /* DIF_OP_SLL */
{ "srl", dt_dis_log }, /* DIF_OP_SRL */
{ "sub", dt_dis_log }, /* DIF_OP_SUB */
{ "add", dt_dis_log }, /* DIF_OP_ADD */
{ "mul", dt_dis_log }, /* DIF_OP_MUL */
{ "sdiv", dt_dis_log }, /* DIF_OP_SDIV */
{ "udiv", dt_dis_log }, /* DIF_OP_UDIV */
{ "srem", dt_dis_log }, /* DIF_OP_SREM */
{ "urem", dt_dis_log }, /* DIF_OP_UREM */
{ "not", dt_dis_r1rd }, /* DIF_OP_NOT */
{ "mov", dt_dis_r1rd }, /* DIF_OP_MOV */
{ "cmp", dt_dis_cmp }, /* DIF_OP_CMP */
{ "tst", dt_dis_tst }, /* DIF_OP_TST */
{ "ba", dt_dis_branch }, /* DIF_OP_BA */
{ "be", dt_dis_branch }, /* DIF_OP_BE */
{ "bne", dt_dis_branch }, /* DIF_OP_BNE */
{ "bg", dt_dis_branch }, /* DIF_OP_BG */
{ "bgu", dt_dis_branch }, /* DIF_OP_BGU */
{ "bge", dt_dis_branch }, /* DIF_OP_BGE */
{ "bgeu", dt_dis_branch }, /* DIF_OP_BGEU */
{ "bl", dt_dis_branch }, /* DIF_OP_BL */
{ "blu", dt_dis_branch }, /* DIF_OP_BLU */
{ "ble", dt_dis_branch }, /* DIF_OP_BLE */
{ "bleu", dt_dis_branch }, /* DIF_OP_BLEU */
{ "ldsb", dt_dis_load }, /* DIF_OP_LDSB */
{ "ldsh", dt_dis_load }, /* DIF_OP_LDSH */
{ "ldsw", dt_dis_load }, /* DIF_OP_LDSW */
{ "ldub", dt_dis_load }, /* DIF_OP_LDUB */
{ "lduh", dt_dis_load }, /* DIF_OP_LDUH */
{ "lduw", dt_dis_load }, /* DIF_OP_LDUW */
{ "ldx", dt_dis_load }, /* DIF_OP_LDX */
{ "ret", dt_dis_ret }, /* DIF_OP_RET */
{ "nop", dt_dis_str }, /* DIF_OP_NOP */
{ "setx", dt_dis_setx }, /* DIF_OP_SETX */
{ "sets", dt_dis_sets }, /* DIF_OP_SETS */
{ "scmp", dt_dis_cmp }, /* DIF_OP_SCMP */
{ "ldga", dt_dis_lda }, /* DIF_OP_LDGA */
{ "ldgs", dt_dis_ldv }, /* DIF_OP_LDGS */
{ "stgs", dt_dis_stv }, /* DIF_OP_STGS */
{ "ldta", dt_dis_lda }, /* DIF_OP_LDTA */
{ "ldts", dt_dis_ldv }, /* DIF_OP_LDTS */
{ "stts", dt_dis_stv }, /* DIF_OP_STTS */
{ "sra", dt_dis_log }, /* DIF_OP_SRA */
{ "call", dt_dis_call }, /* DIF_OP_CALL */
{ "pushtr", dt_dis_pushts }, /* DIF_OP_PUSHTR */
{ "pushtv", dt_dis_pushts }, /* DIF_OP_PUSHTV */
{ "popts", dt_dis_str }, /* DIF_OP_POPTS */
{ "flushts", dt_dis_str }, /* DIF_OP_FLUSHTS */
{ "ldgaa", dt_dis_ldv }, /* DIF_OP_LDGAA */
{ "ldtaa", dt_dis_ldv }, /* DIF_OP_LDTAA */
{ "stgaa", dt_dis_stv }, /* DIF_OP_STGAA */
{ "sttaa", dt_dis_stv }, /* DIF_OP_STTAA */
{ "ldls", dt_dis_ldv }, /* DIF_OP_LDLS */
{ "stls", dt_dis_stv }, /* DIF_OP_STLS */
{ "allocs", dt_dis_r1rd }, /* DIF_OP_ALLOCS */
{ "copys", dt_dis_log }, /* DIF_OP_COPYS */
{ "stb", dt_dis_store }, /* DIF_OP_STB */
{ "sth", dt_dis_store }, /* DIF_OP_STH */
{ "stw", dt_dis_store }, /* DIF_OP_STW */
{ "stx", dt_dis_store }, /* DIF_OP_STX */
{ "uldsb", dt_dis_load }, /* DIF_OP_ULDSB */
{ "uldsh", dt_dis_load }, /* DIF_OP_ULDSH */
{ "uldsw", dt_dis_load }, /* DIF_OP_ULDSW */
{ "uldub", dt_dis_load }, /* DIF_OP_ULDUB */
{ "ulduh", dt_dis_load }, /* DIF_OP_ULDUH */
{ "ulduw", dt_dis_load }, /* DIF_OP_ULDUW */
{ "uldx", dt_dis_load }, /* DIF_OP_ULDX */
{ "rldsb", dt_dis_load }, /* DIF_OP_RLDSB */
{ "rldsh", dt_dis_load }, /* DIF_OP_RLDSH */
{ "rldsw", dt_dis_load }, /* DIF_OP_RLDSW */
{ "rldub", dt_dis_load }, /* DIF_OP_RLDUB */
{ "rlduh", dt_dis_load }, /* DIF_OP_RLDUH */
{ "rlduw", dt_dis_load }, /* DIF_OP_RLDUW */
{ "rldx", dt_dis_load }, /* DIF_OP_RLDX */
{ "xlate", dt_dis_xlate }, /* DIF_OP_XLATE */
{ "xlarg", dt_dis_xlate }, /* DIF_OP_XLARG */
};
const struct opent *op;
ulong_t i = 0;
char type[DT_TYPE_NAMELEN];
(void) fprintf(fp, "\nDIFO 0x%p returns %s\n", (void *)dp,
dt_dis_typestr(&dp->dtdo_rtype, type, sizeof (type)));
(void) fprintf(fp, "%-3s %-8s %s\n",
"OFF", "OPCODE", "INSTRUCTION");
for (i = 0; i < dp->dtdo_len; i++) {
dif_instr_t instr = dp->dtdo_buf[i];
dif_instr_t opcode = DIF_INSTR_OP(instr);
if (opcode >= sizeof (optab) / sizeof (optab[0]))
opcode = 0; /* force invalid opcode message */
op = &optab[opcode];
(void) fprintf(fp, "%02lu: %08x ", i, instr);
op->op_func(dp, op->op_name, instr, fp);
(void) fprintf(fp, "\n");
}
if (dp->dtdo_varlen != 0) {
(void) fprintf(fp, "\n%-16s %-4s %-3s %-3s %-4s %s\n",
"NAME", "ID", "KND", "SCP", "FLAG", "TYPE");
}
for (i = 0; i < dp->dtdo_varlen; i++) {
dtrace_difv_t *v = &dp->dtdo_vartab[i];
char kind[4], scope[4], flags[16] = { 0 };
switch (v->dtdv_kind) {
case DIFV_KIND_ARRAY:
(void) strcpy(kind, "arr");
break;
case DIFV_KIND_SCALAR:
(void) strcpy(kind, "scl");
break;
default:
(void) snprintf(kind, sizeof (kind),
"%u", v->dtdv_kind);
}
switch (v->dtdv_scope) {
case DIFV_SCOPE_GLOBAL:
(void) strcpy(scope, "glb");
break;
case DIFV_SCOPE_THREAD:
(void) strcpy(scope, "tls");
break;
case DIFV_SCOPE_LOCAL:
(void) strcpy(scope, "loc");
break;
default:
(void) snprintf(scope, sizeof (scope),
"%u", v->dtdv_scope);
}
if (v->dtdv_flags & ~(DIFV_F_REF | DIFV_F_MOD)) {
(void) snprintf(flags, sizeof (flags), "/0x%x",
v->dtdv_flags & ~(DIFV_F_REF | DIFV_F_MOD));
}
if (v->dtdv_flags & DIFV_F_REF)
(void) strcat(flags, "/r");
if (v->dtdv_flags & DIFV_F_MOD)
(void) strcat(flags, "/w");
(void) fprintf(fp, "%-16s %-4x %-3s %-3s %-4s %s\n",
&dp->dtdo_strtab[v->dtdv_name],
v->dtdv_id, kind, scope, flags + 1,
dt_dis_typestr(&v->dtdv_type, type, sizeof (type)));
}
if (dp->dtdo_xlmlen != 0) {
(void) fprintf(fp, "\n%-4s %-3s %-12s %s\n",
"XLID", "ARG", "MEMBER", "TYPE");
}
for (i = 0; i < dp->dtdo_xlmlen; i++) {
dt_node_t *dnp = dp->dtdo_xlmtab[i];
dt_xlator_t *dxp = dnp->dn_membexpr->dn_xlator;
(void) fprintf(fp, "%-4u %-3d %-12s %s\n",
(uint_t)dxp->dx_id, dxp->dx_arg, dnp->dn_membname,
dt_node_type_name(dnp, type, sizeof (type)));
}
if (dp->dtdo_krelen != 0)
dt_dis_rtab("KREL", dp, fp, dp->dtdo_kreltab, dp->dtdo_krelen);
if (dp->dtdo_urelen != 0)
dt_dis_rtab("UREL", dp, fp, dp->dtdo_ureltab, dp->dtdo_urelen);
}