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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 (c) 1995, 2010, Oracle and/or its affiliates. All rights reserved.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/signal.h>
#include <sys/fault.h>
#include <sys/syscall.h>
#include <procfs.h>
#include <sys/auxv.h>
#include <libelf.h>
#include <sys/param.h>
#include <stdarg.h>
#include "rdb.h"
#include "disasm.h"
/*
* I don't like this global but it's a work-around for the
* poor disassemble interface for now.
*/
static struct ps_prochandle *cur_ph;
/*
* This routine converts 'address' into it's closest symbol
* representation.
*
* The following flags are used to effect the output:
*
* FLG_PAP_SONAME
* embed the SONAME in the symbol name
* FLG_PAP_NOHEXNAME
* if no symbol found return a null string
* If this flag is not set return a string displaying
* the 'hex' value of address.
* FLG_PAP_PLTDECOM
* decompose the PLT symbol if possible
*/
char *
print_address_ps(struct ps_prochandle *ph, ulong_t address, unsigned flags)
{
static char buf[256];
GElf_Sym sym;
char *str;
ulong_t val;
if (addr_to_sym(ph, address, &sym, &str) == RET_OK) {
map_info_t *mip;
ulong_t pltbase;
if (flags & FLG_PAP_SONAME) {
/*
* Embed SOName in symbol name
*/
if ((mip = addr_to_map(ph, address)) != 0) {
(void) strcpy(buf, mip->mi_name);
(void) strcat(buf, ":");
} else
(void) sprintf(buf, "0x%08lx:", address);
} else
buf[0] = '\0';
if ((flags & FLG_PAP_PLTDECOM) &&
(pltbase = is_plt(ph, address)) != 0) {
rd_plt_info_t rp;
pstatus_t pstatus;
if (pread(ph->pp_statusfd, &pstatus,
sizeof (pstatus), 0) == -1)
perr("pap: reading pstatus");
if (rd_plt_resolution(ph->pp_rap, address,
pstatus.pr_lwp.pr_lwpid, pltbase,
&rp) == RD_OK) {
if (rp.pi_flags & RD_FLG_PI_PLTBOUND) {
GElf_Sym _sym;
char *_str;
if (addr_to_sym(ph, rp.pi_baddr,
&_sym, &_str) == RET_OK) {
(void) snprintf(buf, 256,
"%s0x%lx:plt(%s)",
buf, address, _str);
return (buf);
}
}
}
val = sym.st_value;
(void) snprintf(buf, 256, "%s0x%lx:plt(unbound)+0x%lx",
buf, address, address - val);
return (buf);
} else {
val = sym.st_value;
if (val < address)
(void) snprintf(buf, 256, "%s%s+0x%lx", buf,
str, address - val);
else
(void) snprintf(buf, 256, "%s%s", buf, str);
return (buf);
}
} else {
if (flags & FLG_PAP_NOHEXNAME)
buf[0] = '\0';
else
(void) sprintf(buf, "0x%lx", address);
return (buf);
}
}
char *
print_address(unsigned long address)
{
return (print_address_ps(cur_ph, address,
FLG_PAP_SONAME| FLG_PAP_PLTDECOM));
}
retc_t
disasm_addr(struct ps_prochandle *ph, ulong_t addr, int num_inst)
{
ulong_t offset, end;
int vers = V8_MODE;
if (ph->pp_dmodel == PR_MODEL_LP64)
vers = V9_MODE | V9_SGI_MODE;
for (offset = addr, end = addr + num_inst * 4; offset < end;
offset += 4) {
char *instr_str;
unsigned int instr;
if (ps_pread(ph, offset, (char *)&instr,
sizeof (unsigned)) != PS_OK)
perror("da: ps_pread");
cur_ph = ph;
instr_str = disassemble(instr, offset, print_address, 0, 0,
vers);
(void) printf("%-30s: %s\n", print_address(offset), instr_str);
}
return (RET_OK);
}
void
disasm(struct ps_prochandle *ph, int num_inst)
{
pstatus_t pstat;
if (pread(ph->pp_statusfd, &pstat, sizeof (pstat), 0) == -1)
perr("disasm: PIOCSTATUS");
(void) disasm_addr(ph, (ulong_t)pstat.pr_lwp.pr_reg[R_PC], num_inst);
}
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