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1181 |
sfurman |
/* IBM RS/6000 native-dependent code for GDB, the GNU debugger.
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Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
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1998, 1999, 2000, 2001, 2002
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Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "inferior.h"
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#include "target.h"
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#include "gdbcore.h"
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#include "xcoffsolib.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "libbfd.h" /* For bfd_cache_lookup (FIXME) */
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#include "bfd.h"
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#include "gdb-stabs.h"
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#include "regcache.h"
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#include "arch-utils.h"
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#include "language.h" /* for local_hex_string(). */
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#include "ppc-tdep.h"
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#include <sys/ptrace.h>
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#include <sys/reg.h>
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#include <sys/param.h>
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#include <sys/dir.h>
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#include <sys/user.h>
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#include <signal.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <a.out.h>
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#include <sys/file.h>
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#include "gdb_stat.h"
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#include <sys/core.h>
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53 |
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#define __LDINFO_PTRACE32__ /* for __ld_info32 */
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#define __LDINFO_PTRACE64__ /* for __ld_info64 */
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#include <sys/ldr.h>
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#include <sys/systemcfg.h>
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/* On AIX4.3+, sys/ldr.h provides different versions of struct ld_info for
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debugging 32-bit and 64-bit processes. Define a typedef and macros for
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accessing fields in the appropriate structures. */
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/* In 32-bit compilation mode (which is the only mode from which ptrace()
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works on 4.3), __ld_info32 is #defined as equivalent to ld_info. */
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#ifdef __ld_info32
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# define ARCH3264
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#endif
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68 |
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/* Return whether the current architecture is 64-bit. */
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#ifndef ARCH3264
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# define ARCH64() 0
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#else
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# define ARCH64() (REGISTER_RAW_SIZE (0) == 8)
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#endif
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/* Union of 32-bit and 64-bit ".reg" core file sections. */
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typedef union {
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#ifdef ARCH3264
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struct __context64 r64;
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#else
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struct mstsave r64;
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#endif
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struct mstsave r32;
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} CoreRegs;
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/* Union of 32-bit and 64-bit versions of ld_info. */
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typedef union {
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#ifndef ARCH3264
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struct ld_info l32;
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struct ld_info l64;
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#else
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struct __ld_info32 l32;
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struct __ld_info64 l64;
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#endif
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} LdInfo;
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/* If compiling with 32-bit and 64-bit debugging capability (e.g. AIX 4.x),
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declare and initialize a variable named VAR suitable for use as the arch64
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parameter to the various LDI_*() macros. */
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#ifndef ARCH3264
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# define ARCH64_DECL(var)
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#else
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# define ARCH64_DECL(var) int var = ARCH64 ()
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#endif
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/* Return LDI's FIELD for a 64-bit process if ARCH64 and for a 32-bit process
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otherwise. This technique only works for FIELDs with the same data type in
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32-bit and 64-bit versions of ld_info. */
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#ifndef ARCH3264
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# define LDI_FIELD(ldi, arch64, field) (ldi)->l32.ldinfo_##field
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#else
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# define LDI_FIELD(ldi, arch64, field) \
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(arch64 ? (ldi)->l64.ldinfo_##field : (ldi)->l32.ldinfo_##field)
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#endif
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/* Return various LDI fields for a 64-bit process if ARCH64 and for a 32-bit
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process otherwise. */
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#define LDI_NEXT(ldi, arch64) LDI_FIELD(ldi, arch64, next)
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#define LDI_FD(ldi, arch64) LDI_FIELD(ldi, arch64, fd)
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#define LDI_FILENAME(ldi, arch64) LDI_FIELD(ldi, arch64, filename)
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extern struct vmap *map_vmap (bfd * bf, bfd * arch);
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extern struct target_ops exec_ops;
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static void vmap_exec (void);
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static void vmap_ldinfo (LdInfo *);
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static struct vmap *add_vmap (LdInfo *);
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static int objfile_symbol_add (void *);
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static void vmap_symtab (struct vmap *);
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static void fetch_core_registers (char *, unsigned int, int, CORE_ADDR);
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static void exec_one_dummy_insn (void);
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extern void
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fixup_breakpoints (CORE_ADDR low, CORE_ADDR high, CORE_ADDR delta);
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148 |
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/* Given REGNO, a gdb register number, return the corresponding
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number suitable for use as a ptrace() parameter. Return -1 if
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there's no suitable mapping. Also, set the int pointed to by
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ISFLOAT to indicate whether REGNO is a floating point register. */
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static int
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regmap (int regno, int *isfloat)
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{
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struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
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*isfloat = 0;
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if (tdep->ppc_gp0_regnum <= regno && regno <= tdep->ppc_gplast_regnum)
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return regno;
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else if (FP0_REGNUM <= regno && regno <= FPLAST_REGNUM)
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{
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*isfloat = 1;
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return regno - FP0_REGNUM + FPR0;
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}
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else if (regno == PC_REGNUM)
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return IAR;
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else if (regno == tdep->ppc_ps_regnum)
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return MSR;
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else if (regno == tdep->ppc_cr_regnum)
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return CR;
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else if (regno == tdep->ppc_lr_regnum)
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return LR;
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else if (regno == tdep->ppc_ctr_regnum)
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return CTR;
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else if (regno == tdep->ppc_xer_regnum)
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return XER;
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else if (regno == tdep->ppc_fpscr_regnum)
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return FPSCR;
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else if (tdep->ppc_mq_regnum >= 0 && regno == tdep->ppc_mq_regnum)
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return MQ;
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else
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return -1;
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}
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/* Call ptrace(REQ, ID, ADDR, DATA, BUF). */
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static int
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rs6000_ptrace32 (int req, int id, int *addr, int data, int *buf)
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{
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int ret = ptrace (req, id, (int *)addr, data, buf);
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#if 0
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printf ("rs6000_ptrace32 (%d, %d, 0x%x, %08x, 0x%x) = 0x%x\n",
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req, id, (unsigned int)addr, data, (unsigned int)buf, ret);
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#endif
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return ret;
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}
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/* Call ptracex(REQ, ID, ADDR, DATA, BUF). */
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static int
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rs6000_ptrace64 (int req, int id, long long addr, int data, int *buf)
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{
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#ifdef ARCH3264
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int ret = ptracex (req, id, addr, data, buf);
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#else
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int ret = 0;
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#endif
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#if 0
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printf ("rs6000_ptrace64 (%d, %d, 0x%llx, %08x, 0x%x) = 0x%x\n",
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req, id, addr, data, (unsigned int)buf, ret);
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#endif
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return ret;
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}
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/* Fetch register REGNO from the inferior. */
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static void
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fetch_register (int regno)
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{
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int *addr = alloca (MAX_REGISTER_RAW_SIZE);
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int nr, isfloat;
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/* Retrieved values may be -1, so infer errors from errno. */
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errno = 0;
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nr = regmap (regno, &isfloat);
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/* Floating-point registers. */
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if (isfloat)
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rs6000_ptrace32 (PT_READ_FPR, PIDGET (inferior_ptid), addr, nr, 0);
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/* Bogus register number. */
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else if (nr < 0)
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{
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if (regno >= NUM_REGS)
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fprintf_unfiltered (gdb_stderr,
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"gdb error: register no %d not implemented.\n",
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regno);
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return;
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}
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/* Fixed-point registers. */
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else
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{
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if (!ARCH64 ())
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*addr = rs6000_ptrace32 (PT_READ_GPR, PIDGET (inferior_ptid), (int *)nr, 0, 0);
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else
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{
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/* PT_READ_GPR requires the buffer parameter to point to long long,
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even if the register is really only 32 bits. */
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long long buf;
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rs6000_ptrace64 (PT_READ_GPR, PIDGET (inferior_ptid), nr, 0, (int *)&buf);
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if (REGISTER_RAW_SIZE (regno) == 8)
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memcpy (addr, &buf, 8);
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else
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*addr = buf;
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}
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260 |
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}
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261 |
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262 |
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if (!errno)
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supply_register (regno, (char *) addr);
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else
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{
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#if 0
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/* FIXME: this happens 3 times at the start of each 64-bit program. */
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perror ("ptrace read");
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#endif
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errno = 0;
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271 |
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}
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272 |
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}
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273 |
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274 |
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/* Store register REGNO back into the inferior. */
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275 |
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276 |
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static void
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277 |
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store_register (int regno)
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278 |
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{
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279 |
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int *addr = alloca (MAX_REGISTER_RAW_SIZE);
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280 |
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int nr, isfloat;
|
281 |
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|
282 |
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/* Fetch the register's value from the register cache. */
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283 |
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regcache_collect (regno, addr);
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284 |
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|
285 |
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/* -1 can be a successful return value, so infer errors from errno. */
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286 |
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errno = 0;
|
287 |
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|
288 |
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nr = regmap (regno, &isfloat);
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289 |
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|
290 |
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/* Floating-point registers. */
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291 |
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if (isfloat)
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292 |
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rs6000_ptrace32 (PT_WRITE_FPR, PIDGET (inferior_ptid), addr, nr, 0);
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293 |
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|
294 |
|
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/* Bogus register number. */
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295 |
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else if (nr < 0)
|
296 |
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{
|
297 |
|
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if (regno >= NUM_REGS)
|
298 |
|
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fprintf_unfiltered (gdb_stderr,
|
299 |
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"gdb error: register no %d not implemented.\n",
|
300 |
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regno);
|
301 |
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}
|
302 |
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|
303 |
|
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/* Fixed-point registers. */
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304 |
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else
|
305 |
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{
|
306 |
|
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if (regno == SP_REGNUM)
|
307 |
|
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/* Execute one dummy instruction (which is a breakpoint) in inferior
|
308 |
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process to give kernel a chance to do internal housekeeping.
|
309 |
|
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Otherwise the following ptrace(2) calls will mess up user stack
|
310 |
|
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since kernel will get confused about the bottom of the stack
|
311 |
|
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(%sp). */
|
312 |
|
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exec_one_dummy_insn ();
|
313 |
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|
314 |
|
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/* The PT_WRITE_GPR operation is rather odd. For 32-bit inferiors,
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315 |
|
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the register's value is passed by value, but for 64-bit inferiors,
|
316 |
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the address of a buffer containing the value is passed. */
|
317 |
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if (!ARCH64 ())
|
318 |
|
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rs6000_ptrace32 (PT_WRITE_GPR, PIDGET (inferior_ptid), (int *)nr, *addr, 0);
|
319 |
|
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else
|
320 |
|
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{
|
321 |
|
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/* PT_WRITE_GPR requires the buffer parameter to point to an 8-byte
|
322 |
|
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area, even if the register is really only 32 bits. */
|
323 |
|
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long long buf;
|
324 |
|
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if (REGISTER_RAW_SIZE (regno) == 8)
|
325 |
|
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memcpy (&buf, addr, 8);
|
326 |
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else
|
327 |
|
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buf = *addr;
|
328 |
|
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rs6000_ptrace64 (PT_WRITE_GPR, PIDGET (inferior_ptid), nr, 0, (int *)&buf);
|
329 |
|
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}
|
330 |
|
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}
|
331 |
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|
332 |
|
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if (errno)
|
333 |
|
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{
|
334 |
|
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perror ("ptrace write");
|
335 |
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errno = 0;
|
336 |
|
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}
|
337 |
|
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}
|
338 |
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|
339 |
|
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/* Read from the inferior all registers if REGNO == -1 and just register
|
340 |
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REGNO otherwise. */
|
341 |
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|
342 |
|
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void
|
343 |
|
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fetch_inferior_registers (int regno)
|
344 |
|
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{
|
345 |
|
|
if (regno != -1)
|
346 |
|
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fetch_register (regno);
|
347 |
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|
|
348 |
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else
|
349 |
|
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{
|
350 |
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
|
351 |
|
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|
352 |
|
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/* Read 32 general purpose registers. */
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353 |
|
|
for (regno = tdep->ppc_gp0_regnum;
|
354 |
|
|
regno <= tdep->ppc_gplast_regnum;
|
355 |
|
|
regno++)
|
356 |
|
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{
|
357 |
|
|
fetch_register (regno);
|
358 |
|
|
}
|
359 |
|
|
|
360 |
|
|
/* Read general purpose floating point registers. */
|
361 |
|
|
for (regno = FP0_REGNUM; regno <= FPLAST_REGNUM; regno++)
|
362 |
|
|
fetch_register (regno);
|
363 |
|
|
|
364 |
|
|
/* Read special registers. */
|
365 |
|
|
fetch_register (PC_REGNUM);
|
366 |
|
|
fetch_register (tdep->ppc_ps_regnum);
|
367 |
|
|
fetch_register (tdep->ppc_cr_regnum);
|
368 |
|
|
fetch_register (tdep->ppc_lr_regnum);
|
369 |
|
|
fetch_register (tdep->ppc_ctr_regnum);
|
370 |
|
|
fetch_register (tdep->ppc_xer_regnum);
|
371 |
|
|
fetch_register (tdep->ppc_fpscr_regnum);
|
372 |
|
|
if (tdep->ppc_mq_regnum >= 0)
|
373 |
|
|
fetch_register (tdep->ppc_mq_regnum);
|
374 |
|
|
}
|
375 |
|
|
}
|
376 |
|
|
|
377 |
|
|
/* Store our register values back into the inferior.
|
378 |
|
|
If REGNO is -1, do this for all registers.
|
379 |
|
|
Otherwise, REGNO specifies which register (so we can save time). */
|
380 |
|
|
|
381 |
|
|
void
|
382 |
|
|
store_inferior_registers (int regno)
|
383 |
|
|
{
|
384 |
|
|
if (regno != -1)
|
385 |
|
|
store_register (regno);
|
386 |
|
|
|
387 |
|
|
else
|
388 |
|
|
{
|
389 |
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
|
390 |
|
|
|
391 |
|
|
/* Write general purpose registers first. */
|
392 |
|
|
for (regno = tdep->ppc_gp0_regnum;
|
393 |
|
|
regno <= tdep->ppc_gplast_regnum;
|
394 |
|
|
regno++)
|
395 |
|
|
{
|
396 |
|
|
store_register (regno);
|
397 |
|
|
}
|
398 |
|
|
|
399 |
|
|
/* Write floating point registers. */
|
400 |
|
|
for (regno = FP0_REGNUM; regno <= FPLAST_REGNUM; regno++)
|
401 |
|
|
store_register (regno);
|
402 |
|
|
|
403 |
|
|
/* Write special registers. */
|
404 |
|
|
store_register (PC_REGNUM);
|
405 |
|
|
store_register (tdep->ppc_ps_regnum);
|
406 |
|
|
store_register (tdep->ppc_cr_regnum);
|
407 |
|
|
store_register (tdep->ppc_lr_regnum);
|
408 |
|
|
store_register (tdep->ppc_ctr_regnum);
|
409 |
|
|
store_register (tdep->ppc_xer_regnum);
|
410 |
|
|
store_register (tdep->ppc_fpscr_regnum);
|
411 |
|
|
if (tdep->ppc_mq_regnum >= 0)
|
412 |
|
|
store_register (tdep->ppc_mq_regnum);
|
413 |
|
|
}
|
414 |
|
|
}
|
415 |
|
|
|
416 |
|
|
/* Store in *TO the 32-bit word at 32-bit-aligned ADDR in the child
|
417 |
|
|
process, which is 64-bit if ARCH64 and 32-bit otherwise. Return
|
418 |
|
|
success. */
|
419 |
|
|
|
420 |
|
|
static int
|
421 |
|
|
read_word (CORE_ADDR from, int *to, int arch64)
|
422 |
|
|
{
|
423 |
|
|
/* Retrieved values may be -1, so infer errors from errno. */
|
424 |
|
|
errno = 0;
|
425 |
|
|
|
426 |
|
|
if (arch64)
|
427 |
|
|
*to = rs6000_ptrace64 (PT_READ_I, PIDGET (inferior_ptid), from, 0, NULL);
|
428 |
|
|
else
|
429 |
|
|
*to = rs6000_ptrace32 (PT_READ_I, PIDGET (inferior_ptid), (int *)(long) from,
|
430 |
|
|
0, NULL);
|
431 |
|
|
|
432 |
|
|
return !errno;
|
433 |
|
|
}
|
434 |
|
|
|
435 |
|
|
/* Copy LEN bytes to or from inferior's memory starting at MEMADDR
|
436 |
|
|
to debugger memory starting at MYADDR. Copy to inferior if
|
437 |
|
|
WRITE is nonzero.
|
438 |
|
|
|
439 |
|
|
Returns the length copied, which is either the LEN argument or zero.
|
440 |
|
|
This xfer function does not do partial moves, since child_ops
|
441 |
|
|
doesn't allow memory operations to cross below us in the target stack
|
442 |
|
|
anyway. */
|
443 |
|
|
|
444 |
|
|
int
|
445 |
|
|
child_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
|
446 |
|
|
int write, struct mem_attrib *attrib,
|
447 |
|
|
struct target_ops *target)
|
448 |
|
|
{
|
449 |
|
|
/* Round starting address down to 32-bit word boundary. */
|
450 |
|
|
int mask = sizeof (int) - 1;
|
451 |
|
|
CORE_ADDR addr = memaddr & ~(CORE_ADDR)mask;
|
452 |
|
|
|
453 |
|
|
/* Round ending address up to 32-bit word boundary. */
|
454 |
|
|
int count = ((memaddr + len - addr + mask) & ~(CORE_ADDR)mask)
|
455 |
|
|
/ sizeof (int);
|
456 |
|
|
|
457 |
|
|
/* Allocate word transfer buffer. */
|
458 |
|
|
/* FIXME (alloca): This code, cloned from infptrace.c, is unsafe
|
459 |
|
|
because it uses alloca to allocate a buffer of arbitrary size.
|
460 |
|
|
For very large xfers, this could crash GDB's stack. */
|
461 |
|
|
int *buf = (int *) alloca (count * sizeof (int));
|
462 |
|
|
|
463 |
|
|
int arch64 = ARCH64 ();
|
464 |
|
|
int i;
|
465 |
|
|
|
466 |
|
|
if (!write)
|
467 |
|
|
{
|
468 |
|
|
/* Retrieve memory a word at a time. */
|
469 |
|
|
for (i = 0; i < count; i++, addr += sizeof (int))
|
470 |
|
|
{
|
471 |
|
|
if (!read_word (addr, buf + i, arch64))
|
472 |
|
|
return 0;
|
473 |
|
|
QUIT;
|
474 |
|
|
}
|
475 |
|
|
|
476 |
|
|
/* Copy memory to supplied buffer. */
|
477 |
|
|
addr -= count * sizeof (int);
|
478 |
|
|
memcpy (myaddr, (char *)buf + (memaddr - addr), len);
|
479 |
|
|
}
|
480 |
|
|
else
|
481 |
|
|
{
|
482 |
|
|
/* Fetch leading memory needed for alignment. */
|
483 |
|
|
if (addr < memaddr)
|
484 |
|
|
if (!read_word (addr, buf, arch64))
|
485 |
|
|
return 0;
|
486 |
|
|
|
487 |
|
|
/* Fetch trailing memory needed for alignment. */
|
488 |
|
|
if (addr + count * sizeof (int) > memaddr + len)
|
489 |
|
|
if (!read_word (addr, buf + count - 1, arch64))
|
490 |
|
|
return 0;
|
491 |
|
|
|
492 |
|
|
/* Copy supplied data into memory buffer. */
|
493 |
|
|
memcpy ((char *)buf + (memaddr - addr), myaddr, len);
|
494 |
|
|
|
495 |
|
|
/* Store memory one word at a time. */
|
496 |
|
|
for (i = 0, errno = 0; i < count; i++, addr += sizeof (int))
|
497 |
|
|
{
|
498 |
|
|
if (arch64)
|
499 |
|
|
rs6000_ptrace64 (PT_WRITE_D, PIDGET (inferior_ptid), addr, buf[i], NULL);
|
500 |
|
|
else
|
501 |
|
|
rs6000_ptrace32 (PT_WRITE_D, PIDGET (inferior_ptid), (int *)(long) addr,
|
502 |
|
|
buf[i], NULL);
|
503 |
|
|
|
504 |
|
|
if (errno)
|
505 |
|
|
return 0;
|
506 |
|
|
QUIT;
|
507 |
|
|
}
|
508 |
|
|
}
|
509 |
|
|
|
510 |
|
|
return len;
|
511 |
|
|
}
|
512 |
|
|
|
513 |
|
|
/* Execute one dummy breakpoint instruction. This way we give the kernel
|
514 |
|
|
a chance to do some housekeeping and update inferior's internal data,
|
515 |
|
|
including u_area. */
|
516 |
|
|
|
517 |
|
|
static void
|
518 |
|
|
exec_one_dummy_insn (void)
|
519 |
|
|
{
|
520 |
|
|
#define DUMMY_INSN_ADDR (TEXT_SEGMENT_BASE)+0x200
|
521 |
|
|
|
522 |
|
|
char shadow_contents[BREAKPOINT_MAX]; /* Stash old bkpt addr contents */
|
523 |
|
|
int ret, status, pid;
|
524 |
|
|
CORE_ADDR prev_pc;
|
525 |
|
|
|
526 |
|
|
/* We plant one dummy breakpoint into DUMMY_INSN_ADDR address. We
|
527 |
|
|
assume that this address will never be executed again by the real
|
528 |
|
|
code. */
|
529 |
|
|
|
530 |
|
|
target_insert_breakpoint (DUMMY_INSN_ADDR, shadow_contents);
|
531 |
|
|
|
532 |
|
|
/* You might think this could be done with a single ptrace call, and
|
533 |
|
|
you'd be correct for just about every platform I've ever worked
|
534 |
|
|
on. However, rs6000-ibm-aix4.1.3 seems to have screwed this up --
|
535 |
|
|
the inferior never hits the breakpoint (it's also worth noting
|
536 |
|
|
powerpc-ibm-aix4.1.3 works correctly). */
|
537 |
|
|
prev_pc = read_pc ();
|
538 |
|
|
write_pc (DUMMY_INSN_ADDR);
|
539 |
|
|
if (ARCH64 ())
|
540 |
|
|
ret = rs6000_ptrace64 (PT_CONTINUE, PIDGET (inferior_ptid), 1, 0, NULL);
|
541 |
|
|
else
|
542 |
|
|
ret = rs6000_ptrace32 (PT_CONTINUE, PIDGET (inferior_ptid), (int *)1, 0, NULL);
|
543 |
|
|
|
544 |
|
|
if (ret != 0)
|
545 |
|
|
perror ("pt_continue");
|
546 |
|
|
|
547 |
|
|
do
|
548 |
|
|
{
|
549 |
|
|
pid = wait (&status);
|
550 |
|
|
}
|
551 |
|
|
while (pid != PIDGET (inferior_ptid));
|
552 |
|
|
|
553 |
|
|
write_pc (prev_pc);
|
554 |
|
|
target_remove_breakpoint (DUMMY_INSN_ADDR, shadow_contents);
|
555 |
|
|
}
|
556 |
|
|
|
557 |
|
|
/* Fetch registers from the register section in core bfd. */
|
558 |
|
|
|
559 |
|
|
static void
|
560 |
|
|
fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
|
561 |
|
|
int which, CORE_ADDR reg_addr)
|
562 |
|
|
{
|
563 |
|
|
CoreRegs *regs;
|
564 |
|
|
int regi;
|
565 |
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
|
566 |
|
|
|
567 |
|
|
if (which != 0)
|
568 |
|
|
{
|
569 |
|
|
fprintf_unfiltered
|
570 |
|
|
(gdb_stderr,
|
571 |
|
|
"Gdb error: unknown parameter to fetch_core_registers().\n");
|
572 |
|
|
return;
|
573 |
|
|
}
|
574 |
|
|
|
575 |
|
|
regs = (CoreRegs *) core_reg_sect;
|
576 |
|
|
|
577 |
|
|
/* Put the register values from the core file section in the regcache. */
|
578 |
|
|
|
579 |
|
|
if (ARCH64 ())
|
580 |
|
|
{
|
581 |
|
|
for (regi = 0; regi < 32; regi++)
|
582 |
|
|
supply_register (regi, (char *) ®s->r64.gpr[regi]);
|
583 |
|
|
|
584 |
|
|
for (regi = 0; regi < 32; regi++)
|
585 |
|
|
supply_register (FP0_REGNUM + regi, (char *) ®s->r64.fpr[regi]);
|
586 |
|
|
|
587 |
|
|
supply_register (PC_REGNUM, (char *) ®s->r64.iar);
|
588 |
|
|
supply_register (tdep->ppc_ps_regnum, (char *) ®s->r64.msr);
|
589 |
|
|
supply_register (tdep->ppc_cr_regnum, (char *) ®s->r64.cr);
|
590 |
|
|
supply_register (tdep->ppc_lr_regnum, (char *) ®s->r64.lr);
|
591 |
|
|
supply_register (tdep->ppc_ctr_regnum, (char *) ®s->r64.ctr);
|
592 |
|
|
supply_register (tdep->ppc_xer_regnum, (char *) ®s->r64.xer);
|
593 |
|
|
supply_register (tdep->ppc_fpscr_regnum, (char *) ®s->r64.fpscr);
|
594 |
|
|
}
|
595 |
|
|
else
|
596 |
|
|
{
|
597 |
|
|
for (regi = 0; regi < 32; regi++)
|
598 |
|
|
supply_register (regi, (char *) ®s->r32.gpr[regi]);
|
599 |
|
|
|
600 |
|
|
for (regi = 0; regi < 32; regi++)
|
601 |
|
|
supply_register (FP0_REGNUM + regi, (char *) ®s->r32.fpr[regi]);
|
602 |
|
|
|
603 |
|
|
supply_register (PC_REGNUM, (char *) ®s->r32.iar);
|
604 |
|
|
supply_register (tdep->ppc_ps_regnum, (char *) ®s->r32.msr);
|
605 |
|
|
supply_register (tdep->ppc_cr_regnum, (char *) ®s->r32.cr);
|
606 |
|
|
supply_register (tdep->ppc_lr_regnum, (char *) ®s->r32.lr);
|
607 |
|
|
supply_register (tdep->ppc_ctr_regnum, (char *) ®s->r32.ctr);
|
608 |
|
|
supply_register (tdep->ppc_xer_regnum, (char *) ®s->r32.xer);
|
609 |
|
|
supply_register (tdep->ppc_fpscr_regnum, (char *) ®s->r32.fpscr);
|
610 |
|
|
if (tdep->ppc_mq_regnum >= 0)
|
611 |
|
|
supply_register (tdep->ppc_mq_regnum, (char *) ®s->r32.mq);
|
612 |
|
|
}
|
613 |
|
|
}
|
614 |
|
|
|
615 |
|
|
|
616 |
|
|
/* Copy information about text and data sections from LDI to VP for a 64-bit
|
617 |
|
|
process if ARCH64 and for a 32-bit process otherwise. */
|
618 |
|
|
|
619 |
|
|
static void
|
620 |
|
|
vmap_secs (struct vmap *vp, LdInfo *ldi, int arch64)
|
621 |
|
|
{
|
622 |
|
|
if (arch64)
|
623 |
|
|
{
|
624 |
|
|
vp->tstart = (CORE_ADDR) ldi->l64.ldinfo_textorg;
|
625 |
|
|
vp->tend = vp->tstart + ldi->l64.ldinfo_textsize;
|
626 |
|
|
vp->dstart = (CORE_ADDR) ldi->l64.ldinfo_dataorg;
|
627 |
|
|
vp->dend = vp->dstart + ldi->l64.ldinfo_datasize;
|
628 |
|
|
}
|
629 |
|
|
else
|
630 |
|
|
{
|
631 |
|
|
vp->tstart = (unsigned long) ldi->l32.ldinfo_textorg;
|
632 |
|
|
vp->tend = vp->tstart + ldi->l32.ldinfo_textsize;
|
633 |
|
|
vp->dstart = (unsigned long) ldi->l32.ldinfo_dataorg;
|
634 |
|
|
vp->dend = vp->dstart + ldi->l32.ldinfo_datasize;
|
635 |
|
|
}
|
636 |
|
|
|
637 |
|
|
/* The run time loader maps the file header in addition to the text
|
638 |
|
|
section and returns a pointer to the header in ldinfo_textorg.
|
639 |
|
|
Adjust the text start address to point to the real start address
|
640 |
|
|
of the text section. */
|
641 |
|
|
vp->tstart += vp->toffs;
|
642 |
|
|
}
|
643 |
|
|
|
644 |
|
|
/* handle symbol translation on vmapping */
|
645 |
|
|
|
646 |
|
|
static void
|
647 |
|
|
vmap_symtab (struct vmap *vp)
|
648 |
|
|
{
|
649 |
|
|
register struct objfile *objfile;
|
650 |
|
|
struct section_offsets *new_offsets;
|
651 |
|
|
int i;
|
652 |
|
|
|
653 |
|
|
objfile = vp->objfile;
|
654 |
|
|
if (objfile == NULL)
|
655 |
|
|
{
|
656 |
|
|
/* OK, it's not an objfile we opened ourselves.
|
657 |
|
|
Currently, that can only happen with the exec file, so
|
658 |
|
|
relocate the symbols for the symfile. */
|
659 |
|
|
if (symfile_objfile == NULL)
|
660 |
|
|
return;
|
661 |
|
|
objfile = symfile_objfile;
|
662 |
|
|
}
|
663 |
|
|
else if (!vp->loaded)
|
664 |
|
|
/* If symbols are not yet loaded, offsets are not yet valid. */
|
665 |
|
|
return;
|
666 |
|
|
|
667 |
|
|
new_offsets = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS);
|
668 |
|
|
|
669 |
|
|
for (i = 0; i < objfile->num_sections; ++i)
|
670 |
|
|
new_offsets->offsets[i] = ANOFFSET (objfile->section_offsets, i);
|
671 |
|
|
|
672 |
|
|
/* The symbols in the object file are linked to the VMA of the section,
|
673 |
|
|
relocate them VMA relative. */
|
674 |
|
|
new_offsets->offsets[SECT_OFF_TEXT (objfile)] = vp->tstart - vp->tvma;
|
675 |
|
|
new_offsets->offsets[SECT_OFF_DATA (objfile)] = vp->dstart - vp->dvma;
|
676 |
|
|
new_offsets->offsets[SECT_OFF_BSS (objfile)] = vp->dstart - vp->dvma;
|
677 |
|
|
|
678 |
|
|
objfile_relocate (objfile, new_offsets);
|
679 |
|
|
}
|
680 |
|
|
|
681 |
|
|
/* Add symbols for an objfile. */
|
682 |
|
|
|
683 |
|
|
static int
|
684 |
|
|
objfile_symbol_add (void *arg)
|
685 |
|
|
{
|
686 |
|
|
struct objfile *obj = (struct objfile *) arg;
|
687 |
|
|
|
688 |
|
|
syms_from_objfile (obj, NULL, 0, 0);
|
689 |
|
|
new_symfile_objfile (obj, 0, 0);
|
690 |
|
|
return 1;
|
691 |
|
|
}
|
692 |
|
|
|
693 |
|
|
/* Add symbols for a vmap. Return zero upon error. */
|
694 |
|
|
|
695 |
|
|
int
|
696 |
|
|
vmap_add_symbols (struct vmap *vp)
|
697 |
|
|
{
|
698 |
|
|
if (catch_errors (objfile_symbol_add, vp->objfile,
|
699 |
|
|
"Error while reading shared library symbols:\n",
|
700 |
|
|
RETURN_MASK_ALL))
|
701 |
|
|
{
|
702 |
|
|
/* Note this is only done if symbol reading was successful. */
|
703 |
|
|
vp->loaded = 1;
|
704 |
|
|
vmap_symtab (vp);
|
705 |
|
|
return 1;
|
706 |
|
|
}
|
707 |
|
|
return 0;
|
708 |
|
|
}
|
709 |
|
|
|
710 |
|
|
/* Add a new vmap entry based on ldinfo() information.
|
711 |
|
|
|
712 |
|
|
If ldi->ldinfo_fd is not valid (e.g. this struct ld_info is from a
|
713 |
|
|
core file), the caller should set it to -1, and we will open the file.
|
714 |
|
|
|
715 |
|
|
Return the vmap new entry. */
|
716 |
|
|
|
717 |
|
|
static struct vmap *
|
718 |
|
|
add_vmap (LdInfo *ldi)
|
719 |
|
|
{
|
720 |
|
|
bfd *abfd, *last;
|
721 |
|
|
register char *mem, *objname, *filename;
|
722 |
|
|
struct objfile *obj;
|
723 |
|
|
struct vmap *vp;
|
724 |
|
|
int fd;
|
725 |
|
|
ARCH64_DECL (arch64);
|
726 |
|
|
|
727 |
|
|
/* This ldi structure was allocated using alloca() in
|
728 |
|
|
xcoff_relocate_symtab(). Now we need to have persistent object
|
729 |
|
|
and member names, so we should save them. */
|
730 |
|
|
|
731 |
|
|
filename = LDI_FILENAME (ldi, arch64);
|
732 |
|
|
mem = filename + strlen (filename) + 1;
|
733 |
|
|
mem = savestring (mem, strlen (mem));
|
734 |
|
|
objname = savestring (filename, strlen (filename));
|
735 |
|
|
|
736 |
|
|
fd = LDI_FD (ldi, arch64);
|
737 |
|
|
if (fd < 0)
|
738 |
|
|
/* Note that this opens it once for every member; a possible
|
739 |
|
|
enhancement would be to only open it once for every object. */
|
740 |
|
|
abfd = bfd_openr (objname, gnutarget);
|
741 |
|
|
else
|
742 |
|
|
abfd = bfd_fdopenr (objname, gnutarget, fd);
|
743 |
|
|
if (!abfd)
|
744 |
|
|
{
|
745 |
|
|
warning ("Could not open `%s' as an executable file: %s",
|
746 |
|
|
objname, bfd_errmsg (bfd_get_error ()));
|
747 |
|
|
return NULL;
|
748 |
|
|
}
|
749 |
|
|
|
750 |
|
|
/* make sure we have an object file */
|
751 |
|
|
|
752 |
|
|
if (bfd_check_format (abfd, bfd_object))
|
753 |
|
|
vp = map_vmap (abfd, 0);
|
754 |
|
|
|
755 |
|
|
else if (bfd_check_format (abfd, bfd_archive))
|
756 |
|
|
{
|
757 |
|
|
last = 0;
|
758 |
|
|
/* FIXME??? am I tossing BFDs? bfd? */
|
759 |
|
|
while ((last = bfd_openr_next_archived_file (abfd, last)))
|
760 |
|
|
if (STREQ (mem, last->filename))
|
761 |
|
|
break;
|
762 |
|
|
|
763 |
|
|
if (!last)
|
764 |
|
|
{
|
765 |
|
|
warning ("\"%s\": member \"%s\" missing.", objname, mem);
|
766 |
|
|
bfd_close (abfd);
|
767 |
|
|
return NULL;
|
768 |
|
|
}
|
769 |
|
|
|
770 |
|
|
if (!bfd_check_format (last, bfd_object))
|
771 |
|
|
{
|
772 |
|
|
warning ("\"%s\": member \"%s\" not in executable format: %s.",
|
773 |
|
|
objname, mem, bfd_errmsg (bfd_get_error ()));
|
774 |
|
|
bfd_close (last);
|
775 |
|
|
bfd_close (abfd);
|
776 |
|
|
return NULL;
|
777 |
|
|
}
|
778 |
|
|
|
779 |
|
|
vp = map_vmap (last, abfd);
|
780 |
|
|
}
|
781 |
|
|
else
|
782 |
|
|
{
|
783 |
|
|
warning ("\"%s\": not in executable format: %s.",
|
784 |
|
|
objname, bfd_errmsg (bfd_get_error ()));
|
785 |
|
|
bfd_close (abfd);
|
786 |
|
|
return NULL;
|
787 |
|
|
}
|
788 |
|
|
obj = allocate_objfile (vp->bfd, 0);
|
789 |
|
|
vp->objfile = obj;
|
790 |
|
|
|
791 |
|
|
/* Always add symbols for the main objfile. */
|
792 |
|
|
if (vp == vmap || auto_solib_add)
|
793 |
|
|
vmap_add_symbols (vp);
|
794 |
|
|
return vp;
|
795 |
|
|
}
|
796 |
|
|
|
797 |
|
|
/* update VMAP info with ldinfo() information
|
798 |
|
|
Input is ptr to ldinfo() results. */
|
799 |
|
|
|
800 |
|
|
static void
|
801 |
|
|
vmap_ldinfo (LdInfo *ldi)
|
802 |
|
|
{
|
803 |
|
|
struct stat ii, vi;
|
804 |
|
|
register struct vmap *vp;
|
805 |
|
|
int got_one, retried;
|
806 |
|
|
int got_exec_file = 0;
|
807 |
|
|
uint next;
|
808 |
|
|
int arch64 = ARCH64 ();
|
809 |
|
|
|
810 |
|
|
/* For each *ldi, see if we have a corresponding *vp.
|
811 |
|
|
If so, update the mapping, and symbol table.
|
812 |
|
|
If not, add an entry and symbol table. */
|
813 |
|
|
|
814 |
|
|
do
|
815 |
|
|
{
|
816 |
|
|
char *name = LDI_FILENAME (ldi, arch64);
|
817 |
|
|
char *memb = name + strlen (name) + 1;
|
818 |
|
|
int fd = LDI_FD (ldi, arch64);
|
819 |
|
|
|
820 |
|
|
retried = 0;
|
821 |
|
|
|
822 |
|
|
if (fstat (fd, &ii) < 0)
|
823 |
|
|
{
|
824 |
|
|
/* The kernel sets ld_info to -1, if the process is still using the
|
825 |
|
|
object, and the object is removed. Keep the symbol info for the
|
826 |
|
|
removed object and issue a warning. */
|
827 |
|
|
warning ("%s (fd=%d) has disappeared, keeping its symbols",
|
828 |
|
|
name, fd);
|
829 |
|
|
continue;
|
830 |
|
|
}
|
831 |
|
|
retry:
|
832 |
|
|
for (got_one = 0, vp = vmap; vp; vp = vp->nxt)
|
833 |
|
|
{
|
834 |
|
|
struct objfile *objfile;
|
835 |
|
|
|
836 |
|
|
/* First try to find a `vp', which is the same as in ldinfo.
|
837 |
|
|
If not the same, just continue and grep the next `vp'. If same,
|
838 |
|
|
relocate its tstart, tend, dstart, dend values. If no such `vp'
|
839 |
|
|
found, get out of this for loop, add this ldi entry as a new vmap
|
840 |
|
|
(add_vmap) and come back, find its `vp' and so on... */
|
841 |
|
|
|
842 |
|
|
/* The filenames are not always sufficient to match on. */
|
843 |
|
|
|
844 |
|
|
if ((name[0] == '/' && !STREQ (name, vp->name))
|
845 |
|
|
|| (memb[0] && !STREQ (memb, vp->member)))
|
846 |
|
|
continue;
|
847 |
|
|
|
848 |
|
|
/* See if we are referring to the same file.
|
849 |
|
|
We have to check objfile->obfd, symfile.c:reread_symbols might
|
850 |
|
|
have updated the obfd after a change. */
|
851 |
|
|
objfile = vp->objfile == NULL ? symfile_objfile : vp->objfile;
|
852 |
|
|
if (objfile == NULL
|
853 |
|
|
|| objfile->obfd == NULL
|
854 |
|
|
|| bfd_stat (objfile->obfd, &vi) < 0)
|
855 |
|
|
{
|
856 |
|
|
warning ("Unable to stat %s, keeping its symbols", name);
|
857 |
|
|
continue;
|
858 |
|
|
}
|
859 |
|
|
|
860 |
|
|
if (ii.st_dev != vi.st_dev || ii.st_ino != vi.st_ino)
|
861 |
|
|
continue;
|
862 |
|
|
|
863 |
|
|
if (!retried)
|
864 |
|
|
close (fd);
|
865 |
|
|
|
866 |
|
|
++got_one;
|
867 |
|
|
|
868 |
|
|
/* Found a corresponding VMAP. Remap! */
|
869 |
|
|
|
870 |
|
|
vmap_secs (vp, ldi, arch64);
|
871 |
|
|
|
872 |
|
|
/* The objfile is only NULL for the exec file. */
|
873 |
|
|
if (vp->objfile == NULL)
|
874 |
|
|
got_exec_file = 1;
|
875 |
|
|
|
876 |
|
|
/* relocate symbol table(s). */
|
877 |
|
|
vmap_symtab (vp);
|
878 |
|
|
|
879 |
|
|
/* Announce new object files. Doing this after symbol relocation
|
880 |
|
|
makes aix-thread.c's job easier. */
|
881 |
|
|
if (target_new_objfile_hook && vp->objfile)
|
882 |
|
|
target_new_objfile_hook (vp->objfile);
|
883 |
|
|
|
884 |
|
|
/* There may be more, so we don't break out of the loop. */
|
885 |
|
|
}
|
886 |
|
|
|
887 |
|
|
/* if there was no matching *vp, we must perforce create the sucker(s) */
|
888 |
|
|
if (!got_one && !retried)
|
889 |
|
|
{
|
890 |
|
|
add_vmap (ldi);
|
891 |
|
|
++retried;
|
892 |
|
|
goto retry;
|
893 |
|
|
}
|
894 |
|
|
}
|
895 |
|
|
while ((next = LDI_NEXT (ldi, arch64))
|
896 |
|
|
&& (ldi = (void *) (next + (char *) ldi)));
|
897 |
|
|
|
898 |
|
|
/* If we don't find the symfile_objfile anywhere in the ldinfo, it
|
899 |
|
|
is unlikely that the symbol file is relocated to the proper
|
900 |
|
|
address. And we might have attached to a process which is
|
901 |
|
|
running a different copy of the same executable. */
|
902 |
|
|
if (symfile_objfile != NULL && !got_exec_file)
|
903 |
|
|
{
|
904 |
|
|
warning ("Symbol file %s\nis not mapped; discarding it.\n\
|
905 |
|
|
If in fact that file has symbols which the mapped files listed by\n\
|
906 |
|
|
\"info files\" lack, you can load symbols with the \"symbol-file\" or\n\
|
907 |
|
|
\"add-symbol-file\" commands (note that you must take care of relocating\n\
|
908 |
|
|
symbols to the proper address).",
|
909 |
|
|
symfile_objfile->name);
|
910 |
|
|
free_objfile (symfile_objfile);
|
911 |
|
|
symfile_objfile = NULL;
|
912 |
|
|
}
|
913 |
|
|
breakpoint_re_set ();
|
914 |
|
|
}
|
915 |
|
|
|
916 |
|
|
/* As well as symbol tables, exec_sections need relocation. After
|
917 |
|
|
the inferior process' termination, there will be a relocated symbol
|
918 |
|
|
table exist with no corresponding inferior process. At that time, we
|
919 |
|
|
need to use `exec' bfd, rather than the inferior process's memory space
|
920 |
|
|
to look up symbols.
|
921 |
|
|
|
922 |
|
|
`exec_sections' need to be relocated only once, as long as the exec
|
923 |
|
|
file remains unchanged.
|
924 |
|
|
*/
|
925 |
|
|
|
926 |
|
|
static void
|
927 |
|
|
vmap_exec (void)
|
928 |
|
|
{
|
929 |
|
|
static bfd *execbfd;
|
930 |
|
|
int i;
|
931 |
|
|
|
932 |
|
|
if (execbfd == exec_bfd)
|
933 |
|
|
return;
|
934 |
|
|
|
935 |
|
|
execbfd = exec_bfd;
|
936 |
|
|
|
937 |
|
|
if (!vmap || !exec_ops.to_sections)
|
938 |
|
|
error ("vmap_exec: vmap or exec_ops.to_sections == 0\n");
|
939 |
|
|
|
940 |
|
|
for (i = 0; &exec_ops.to_sections[i] < exec_ops.to_sections_end; i++)
|
941 |
|
|
{
|
942 |
|
|
if (STREQ (".text", exec_ops.to_sections[i].the_bfd_section->name))
|
943 |
|
|
{
|
944 |
|
|
exec_ops.to_sections[i].addr += vmap->tstart - vmap->tvma;
|
945 |
|
|
exec_ops.to_sections[i].endaddr += vmap->tstart - vmap->tvma;
|
946 |
|
|
}
|
947 |
|
|
else if (STREQ (".data", exec_ops.to_sections[i].the_bfd_section->name))
|
948 |
|
|
{
|
949 |
|
|
exec_ops.to_sections[i].addr += vmap->dstart - vmap->dvma;
|
950 |
|
|
exec_ops.to_sections[i].endaddr += vmap->dstart - vmap->dvma;
|
951 |
|
|
}
|
952 |
|
|
else if (STREQ (".bss", exec_ops.to_sections[i].the_bfd_section->name))
|
953 |
|
|
{
|
954 |
|
|
exec_ops.to_sections[i].addr += vmap->dstart - vmap->dvma;
|
955 |
|
|
exec_ops.to_sections[i].endaddr += vmap->dstart - vmap->dvma;
|
956 |
|
|
}
|
957 |
|
|
}
|
958 |
|
|
}
|
959 |
|
|
|
960 |
|
|
/* Set the current architecture from the host running GDB. Called when
|
961 |
|
|
starting a child process. */
|
962 |
|
|
|
963 |
|
|
static void
|
964 |
|
|
set_host_arch (int pid)
|
965 |
|
|
{
|
966 |
|
|
enum bfd_architecture arch;
|
967 |
|
|
unsigned long mach;
|
968 |
|
|
bfd abfd;
|
969 |
|
|
struct gdbarch_info info;
|
970 |
|
|
|
971 |
|
|
if (__power_rs ())
|
972 |
|
|
{
|
973 |
|
|
arch = bfd_arch_rs6000;
|
974 |
|
|
mach = bfd_mach_rs6k;
|
975 |
|
|
}
|
976 |
|
|
else
|
977 |
|
|
{
|
978 |
|
|
arch = bfd_arch_powerpc;
|
979 |
|
|
mach = bfd_mach_ppc;
|
980 |
|
|
}
|
981 |
|
|
|
982 |
|
|
/* FIXME: schauer/2002-02-25:
|
983 |
|
|
We don't know if we are executing a 32 or 64 bit executable,
|
984 |
|
|
and have no way to pass the proper word size to rs6000_gdbarch_init.
|
985 |
|
|
So we have to avoid switching to a new architecture, if the architecture
|
986 |
|
|
matches already.
|
987 |
|
|
Blindly calling rs6000_gdbarch_init used to work in older versions of
|
988 |
|
|
GDB, as rs6000_gdbarch_init incorrectly used the previous tdep to
|
989 |
|
|
determine the wordsize. */
|
990 |
|
|
if (exec_bfd)
|
991 |
|
|
{
|
992 |
|
|
const struct bfd_arch_info *exec_bfd_arch_info;
|
993 |
|
|
|
994 |
|
|
exec_bfd_arch_info = bfd_get_arch_info (exec_bfd);
|
995 |
|
|
if (arch == exec_bfd_arch_info->arch)
|
996 |
|
|
return;
|
997 |
|
|
}
|
998 |
|
|
|
999 |
|
|
bfd_default_set_arch_mach (&abfd, arch, mach);
|
1000 |
|
|
|
1001 |
|
|
gdbarch_info_init (&info);
|
1002 |
|
|
info.bfd_arch_info = bfd_get_arch_info (&abfd);
|
1003 |
|
|
|
1004 |
|
|
if (!gdbarch_update_p (info))
|
1005 |
|
|
{
|
1006 |
|
|
internal_error (__FILE__, __LINE__,
|
1007 |
|
|
"set_host_arch: failed to select architecture");
|
1008 |
|
|
}
|
1009 |
|
|
}
|
1010 |
|
|
|
1011 |
|
|
|
1012 |
|
|
/* xcoff_relocate_symtab - hook for symbol table relocation.
|
1013 |
|
|
also reads shared libraries.. */
|
1014 |
|
|
|
1015 |
|
|
void
|
1016 |
|
|
xcoff_relocate_symtab (unsigned int pid)
|
1017 |
|
|
{
|
1018 |
|
|
int load_segs = 64; /* number of load segments */
|
1019 |
|
|
int rc;
|
1020 |
|
|
LdInfo *ldi = NULL;
|
1021 |
|
|
int arch64 = ARCH64 ();
|
1022 |
|
|
int ldisize = arch64 ? sizeof (ldi->l64) : sizeof (ldi->l32);
|
1023 |
|
|
int size;
|
1024 |
|
|
|
1025 |
|
|
do
|
1026 |
|
|
{
|
1027 |
|
|
size = load_segs * ldisize;
|
1028 |
|
|
ldi = (void *) xrealloc (ldi, size);
|
1029 |
|
|
|
1030 |
|
|
#if 0
|
1031 |
|
|
/* According to my humble theory, AIX has some timing problems and
|
1032 |
|
|
when the user stack grows, kernel doesn't update stack info in time
|
1033 |
|
|
and ptrace calls step on user stack. That is why we sleep here a
|
1034 |
|
|
little, and give kernel to update its internals. */
|
1035 |
|
|
usleep (36000);
|
1036 |
|
|
#endif
|
1037 |
|
|
|
1038 |
|
|
if (arch64)
|
1039 |
|
|
rc = rs6000_ptrace64 (PT_LDINFO, pid, (unsigned long) ldi, size, NULL);
|
1040 |
|
|
else
|
1041 |
|
|
rc = rs6000_ptrace32 (PT_LDINFO, pid, (int *) ldi, size, NULL);
|
1042 |
|
|
|
1043 |
|
|
if (rc == -1)
|
1044 |
|
|
{
|
1045 |
|
|
if (errno == ENOMEM)
|
1046 |
|
|
load_segs *= 2;
|
1047 |
|
|
else
|
1048 |
|
|
perror_with_name ("ptrace ldinfo");
|
1049 |
|
|
}
|
1050 |
|
|
else
|
1051 |
|
|
{
|
1052 |
|
|
vmap_ldinfo (ldi);
|
1053 |
|
|
vmap_exec (); /* relocate the exec and core sections as well. */
|
1054 |
|
|
}
|
1055 |
|
|
} while (rc == -1);
|
1056 |
|
|
if (ldi)
|
1057 |
|
|
xfree (ldi);
|
1058 |
|
|
}
|
1059 |
|
|
|
1060 |
|
|
/* Core file stuff. */
|
1061 |
|
|
|
1062 |
|
|
/* Relocate symtabs and read in shared library info, based on symbols
|
1063 |
|
|
from the core file. */
|
1064 |
|
|
|
1065 |
|
|
void
|
1066 |
|
|
xcoff_relocate_core (struct target_ops *target)
|
1067 |
|
|
{
|
1068 |
|
|
sec_ptr ldinfo_sec;
|
1069 |
|
|
int offset = 0;
|
1070 |
|
|
LdInfo *ldi;
|
1071 |
|
|
struct vmap *vp;
|
1072 |
|
|
int arch64 = ARCH64 ();
|
1073 |
|
|
|
1074 |
|
|
/* Size of a struct ld_info except for the variable-length filename. */
|
1075 |
|
|
int nonfilesz = (int)LDI_FILENAME ((LdInfo *)0, arch64);
|
1076 |
|
|
|
1077 |
|
|
/* Allocated size of buffer. */
|
1078 |
|
|
int buffer_size = nonfilesz;
|
1079 |
|
|
char *buffer = xmalloc (buffer_size);
|
1080 |
|
|
struct cleanup *old = make_cleanup (free_current_contents, &buffer);
|
1081 |
|
|
|
1082 |
|
|
ldinfo_sec = bfd_get_section_by_name (core_bfd, ".ldinfo");
|
1083 |
|
|
if (ldinfo_sec == NULL)
|
1084 |
|
|
{
|
1085 |
|
|
bfd_err:
|
1086 |
|
|
fprintf_filtered (gdb_stderr, "Couldn't get ldinfo from core file: %s\n",
|
1087 |
|
|
bfd_errmsg (bfd_get_error ()));
|
1088 |
|
|
do_cleanups (old);
|
1089 |
|
|
return;
|
1090 |
|
|
}
|
1091 |
|
|
do
|
1092 |
|
|
{
|
1093 |
|
|
int i;
|
1094 |
|
|
int names_found = 0;
|
1095 |
|
|
|
1096 |
|
|
/* Read in everything but the name. */
|
1097 |
|
|
if (bfd_get_section_contents (core_bfd, ldinfo_sec, buffer,
|
1098 |
|
|
offset, nonfilesz) == 0)
|
1099 |
|
|
goto bfd_err;
|
1100 |
|
|
|
1101 |
|
|
/* Now the name. */
|
1102 |
|
|
i = nonfilesz;
|
1103 |
|
|
do
|
1104 |
|
|
{
|
1105 |
|
|
if (i == buffer_size)
|
1106 |
|
|
{
|
1107 |
|
|
buffer_size *= 2;
|
1108 |
|
|
buffer = xrealloc (buffer, buffer_size);
|
1109 |
|
|
}
|
1110 |
|
|
if (bfd_get_section_contents (core_bfd, ldinfo_sec, &buffer[i],
|
1111 |
|
|
offset + i, 1) == 0)
|
1112 |
|
|
goto bfd_err;
|
1113 |
|
|
if (buffer[i++] == '\0')
|
1114 |
|
|
++names_found;
|
1115 |
|
|
}
|
1116 |
|
|
while (names_found < 2);
|
1117 |
|
|
|
1118 |
|
|
ldi = (LdInfo *) buffer;
|
1119 |
|
|
|
1120 |
|
|
/* Can't use a file descriptor from the core file; need to open it. */
|
1121 |
|
|
if (arch64)
|
1122 |
|
|
ldi->l64.ldinfo_fd = -1;
|
1123 |
|
|
else
|
1124 |
|
|
ldi->l32.ldinfo_fd = -1;
|
1125 |
|
|
|
1126 |
|
|
/* The first ldinfo is for the exec file, allocated elsewhere. */
|
1127 |
|
|
if (offset == 0 && vmap != NULL)
|
1128 |
|
|
vp = vmap;
|
1129 |
|
|
else
|
1130 |
|
|
vp = add_vmap (ldi);
|
1131 |
|
|
|
1132 |
|
|
/* Process next shared library upon error. */
|
1133 |
|
|
offset += LDI_NEXT (ldi, arch64);
|
1134 |
|
|
if (vp == NULL)
|
1135 |
|
|
continue;
|
1136 |
|
|
|
1137 |
|
|
vmap_secs (vp, ldi, arch64);
|
1138 |
|
|
|
1139 |
|
|
/* Unless this is the exec file,
|
1140 |
|
|
add our sections to the section table for the core target. */
|
1141 |
|
|
if (vp != vmap)
|
1142 |
|
|
{
|
1143 |
|
|
struct section_table *stp;
|
1144 |
|
|
|
1145 |
|
|
target_resize_to_sections (target, 2);
|
1146 |
|
|
stp = target->to_sections_end - 2;
|
1147 |
|
|
|
1148 |
|
|
stp->bfd = vp->bfd;
|
1149 |
|
|
stp->the_bfd_section = bfd_get_section_by_name (stp->bfd, ".text");
|
1150 |
|
|
stp->addr = vp->tstart;
|
1151 |
|
|
stp->endaddr = vp->tend;
|
1152 |
|
|
stp++;
|
1153 |
|
|
|
1154 |
|
|
stp->bfd = vp->bfd;
|
1155 |
|
|
stp->the_bfd_section = bfd_get_section_by_name (stp->bfd, ".data");
|
1156 |
|
|
stp->addr = vp->dstart;
|
1157 |
|
|
stp->endaddr = vp->dend;
|
1158 |
|
|
}
|
1159 |
|
|
|
1160 |
|
|
vmap_symtab (vp);
|
1161 |
|
|
|
1162 |
|
|
if (target_new_objfile_hook && vp != vmap && vp->objfile)
|
1163 |
|
|
target_new_objfile_hook (vp->objfile);
|
1164 |
|
|
}
|
1165 |
|
|
while (LDI_NEXT (ldi, arch64) != 0);
|
1166 |
|
|
vmap_exec ();
|
1167 |
|
|
breakpoint_re_set ();
|
1168 |
|
|
do_cleanups (old);
|
1169 |
|
|
}
|
1170 |
|
|
|
1171 |
|
|
int
|
1172 |
|
|
kernel_u_size (void)
|
1173 |
|
|
{
|
1174 |
|
|
return (sizeof (struct user));
|
1175 |
|
|
}
|
1176 |
|
|
|
1177 |
|
|
/* Under AIX, we have to pass the correct TOC pointer to a function
|
1178 |
|
|
when calling functions in the inferior.
|
1179 |
|
|
We try to find the relative toc offset of the objfile containing PC
|
1180 |
|
|
and add the current load address of the data segment from the vmap. */
|
1181 |
|
|
|
1182 |
|
|
static CORE_ADDR
|
1183 |
|
|
find_toc_address (CORE_ADDR pc)
|
1184 |
|
|
{
|
1185 |
|
|
struct vmap *vp;
|
1186 |
|
|
extern CORE_ADDR get_toc_offset (struct objfile *); /* xcoffread.c */
|
1187 |
|
|
|
1188 |
|
|
for (vp = vmap; vp; vp = vp->nxt)
|
1189 |
|
|
{
|
1190 |
|
|
if (pc >= vp->tstart && pc < vp->tend)
|
1191 |
|
|
{
|
1192 |
|
|
/* vp->objfile is only NULL for the exec file. */
|
1193 |
|
|
return vp->dstart + get_toc_offset (vp->objfile == NULL
|
1194 |
|
|
? symfile_objfile
|
1195 |
|
|
: vp->objfile);
|
1196 |
|
|
}
|
1197 |
|
|
}
|
1198 |
|
|
error ("Unable to find TOC entry for pc %s\n", local_hex_string (pc));
|
1199 |
|
|
}
|
1200 |
|
|
|
1201 |
|
|
/* Register that we are able to handle rs6000 core file formats. */
|
1202 |
|
|
|
1203 |
|
|
static struct core_fns rs6000_core_fns =
|
1204 |
|
|
{
|
1205 |
|
|
bfd_target_xcoff_flavour, /* core_flavour */
|
1206 |
|
|
default_check_format, /* check_format */
|
1207 |
|
|
default_core_sniffer, /* core_sniffer */
|
1208 |
|
|
fetch_core_registers, /* core_read_registers */
|
1209 |
|
|
NULL /* next */
|
1210 |
|
|
};
|
1211 |
|
|
|
1212 |
|
|
void
|
1213 |
|
|
_initialize_core_rs6000 (void)
|
1214 |
|
|
{
|
1215 |
|
|
/* Initialize hook in rs6000-tdep.c for determining the TOC address when
|
1216 |
|
|
calling functions in the inferior. */
|
1217 |
|
|
rs6000_find_toc_address_hook = find_toc_address;
|
1218 |
|
|
|
1219 |
|
|
/* Initialize hook in rs6000-tdep.c to set the current architecture when
|
1220 |
|
|
starting a child process. */
|
1221 |
|
|
rs6000_set_host_arch_hook = set_host_arch;
|
1222 |
|
|
|
1223 |
|
|
add_core_fns (&rs6000_core_fns);
|
1224 |
|
|
}
|