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-rw-r--r--gdb/rs6000-nat.c845
1 files changed, 0 insertions, 845 deletions
diff --git a/gdb/rs6000-nat.c b/gdb/rs6000-nat.c
deleted file mode 100644
index c74a36f..0000000
--- a/gdb/rs6000-nat.c
+++ /dev/null
@@ -1,845 +0,0 @@
-/* IBM RS/6000 native-dependent code for GDB, the GNU debugger.
- Copyright 1986, 1987, 1989, 1991, 1992, 1994, 1995, 1996, 1997, 1998
- Free Software Foundation, Inc.
-
-This file is part of GDB.
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-#include "defs.h"
-#include "inferior.h"
-#include "target.h"
-#include "gdbcore.h"
-#include "xcoffsolib.h"
-#include "symfile.h"
-#include "objfiles.h"
-#include "libbfd.h" /* For bfd_cache_lookup (FIXME) */
-#include "bfd.h"
-#include "gdb-stabs.h"
-
-#include <sys/ptrace.h>
-#include <sys/reg.h>
-
-#include <sys/param.h>
-#include <sys/dir.h>
-#include <sys/user.h>
-#include <signal.h>
-#include <sys/ioctl.h>
-#include <fcntl.h>
-
-#include <a.out.h>
-#include <sys/file.h>
-#include "gdb_stat.h"
-#include <sys/core.h>
-#include <sys/ldr.h>
-
-extern int errno;
-
-extern struct vmap * map_vmap PARAMS ((bfd *bf, bfd *arch));
-
-extern struct target_ops exec_ops;
-
-static void
-vmap_exec PARAMS ((void));
-
-static void
-vmap_ldinfo PARAMS ((struct ld_info *));
-
-static struct vmap *
-add_vmap PARAMS ((struct ld_info *));
-
-static int
-objfile_symbol_add PARAMS ((char *));
-
-static void
-vmap_symtab PARAMS ((struct vmap *));
-
-static void
-fetch_core_registers PARAMS ((char *, unsigned int, int, CORE_ADDR));
-
-static void
-exec_one_dummy_insn PARAMS ((void));
-
-extern void
-fixup_breakpoints PARAMS ((CORE_ADDR low, CORE_ADDR high, CORE_ADDR delta));
-
-/* Conversion from gdb-to-system special purpose register numbers.. */
-
-static int special_regs[] = {
- IAR, /* PC_REGNUM */
- MSR, /* PS_REGNUM */
- CR, /* CR_REGNUM */
- LR, /* LR_REGNUM */
- CTR, /* CTR_REGNUM */
- XER, /* XER_REGNUM */
- MQ /* MQ_REGNUM */
-};
-
-void
-fetch_inferior_registers (regno)
- int regno;
-{
- int ii;
- extern char registers[];
-
- if (regno < 0) { /* for all registers */
-
- /* read 32 general purpose registers. */
-
- for (ii=0; ii < 32; ++ii)
- *(int*)&registers[REGISTER_BYTE (ii)] =
- ptrace (PT_READ_GPR, inferior_pid, (PTRACE_ARG3_TYPE) ii, 0, 0);
-
- /* read general purpose floating point registers. */
-
- for (ii=0; ii < 32; ++ii)
- ptrace (PT_READ_FPR, inferior_pid,
- (PTRACE_ARG3_TYPE) &registers [REGISTER_BYTE (FP0_REGNUM+ii)],
- FPR0+ii, 0);
-
- /* read special registers. */
- for (ii=0; ii <= LAST_UISA_SP_REGNUM-FIRST_UISA_SP_REGNUM; ++ii)
- *(int*)&registers[REGISTER_BYTE (FIRST_UISA_SP_REGNUM+ii)] =
- ptrace (PT_READ_GPR, inferior_pid, (PTRACE_ARG3_TYPE) special_regs[ii],
- 0, 0);
-
- registers_fetched ();
- return;
- }
-
- /* else an individual register is addressed. */
-
- else if (regno < FP0_REGNUM) { /* a GPR */
- *(int*)&registers[REGISTER_BYTE (regno)] =
- ptrace (PT_READ_GPR, inferior_pid, (PTRACE_ARG3_TYPE) regno, 0, 0);
- }
- else if (regno <= FPLAST_REGNUM) { /* a FPR */
- ptrace (PT_READ_FPR, inferior_pid,
- (PTRACE_ARG3_TYPE) &registers [REGISTER_BYTE (regno)],
- (regno-FP0_REGNUM+FPR0), 0);
- }
- else if (regno <= LAST_UISA_SP_REGNUM) { /* a special register */
- *(int*)&registers[REGISTER_BYTE (regno)] =
- ptrace (PT_READ_GPR, inferior_pid,
- (PTRACE_ARG3_TYPE) special_regs[regno-FIRST_UISA_SP_REGNUM],
- 0, 0);
- }
- else
- fprintf_unfiltered (gdb_stderr,
- "gdb error: register no %d not implemented.\n",
- regno);
-
- register_valid [regno] = 1;
-}
-
-/* Store our register values back into the inferior.
- If REGNO is -1, do this for all registers.
- Otherwise, REGNO specifies which register (so we can save time). */
-
-void
-store_inferior_registers (regno)
- int regno;
-{
- extern char registers[];
-
- errno = 0;
-
- if (regno == -1)
- { /* for all registers.. */
- int ii;
-
- /* execute one dummy instruction (which is a breakpoint) in inferior
- process. So give kernel a chance to do internal house keeping.
- Otherwise the following ptrace(2) calls will mess up user stack
- since kernel will get confused about the bottom of the stack (%sp) */
-
- exec_one_dummy_insn ();
-
- /* write general purpose registers first! */
- for ( ii=GPR0; ii<=GPR31; ++ii)
- {
- ptrace (PT_WRITE_GPR, inferior_pid, (PTRACE_ARG3_TYPE) ii,
- *(int*)&registers[REGISTER_BYTE (ii)], 0);
- if (errno)
- {
- perror ("ptrace write_gpr");
- errno = 0;
- }
- }
-
- /* write floating point registers now. */
- for ( ii=0; ii < 32; ++ii)
- {
- ptrace (PT_WRITE_FPR, inferior_pid,
- (PTRACE_ARG3_TYPE) &registers[REGISTER_BYTE (FP0_REGNUM+ii)],
- FPR0+ii, 0);
- if (errno)
- {
- perror ("ptrace write_fpr");
- errno = 0;
- }
- }
-
- /* write special registers. */
- for (ii=0; ii <= LAST_UISA_SP_REGNUM-FIRST_UISA_SP_REGNUM; ++ii)
- {
- ptrace (PT_WRITE_GPR, inferior_pid,
- (PTRACE_ARG3_TYPE) special_regs[ii],
- *(int*)&registers[REGISTER_BYTE (FIRST_UISA_SP_REGNUM+ii)],
- 0);
- if (errno)
- {
- perror ("ptrace write_gpr");
- errno = 0;
- }
- }
- }
-
- /* else, a specific register number is given... */
-
- else if (regno < FP0_REGNUM) /* a GPR */
- {
- ptrace (PT_WRITE_GPR, inferior_pid, (PTRACE_ARG3_TYPE) regno,
- *(int*)&registers[REGISTER_BYTE (regno)], 0);
- }
-
- else if (regno <= FPLAST_REGNUM) /* a FPR */
- {
- ptrace (PT_WRITE_FPR, inferior_pid,
- (PTRACE_ARG3_TYPE) &registers[REGISTER_BYTE (regno)],
- regno - FP0_REGNUM + FPR0, 0);
- }
-
- else if (regno <= LAST_UISA_SP_REGNUM) /* a special register */
- {
- ptrace (PT_WRITE_GPR, inferior_pid,
- (PTRACE_ARG3_TYPE) special_regs [regno-FIRST_UISA_SP_REGNUM],
- *(int*)&registers[REGISTER_BYTE (regno)], 0);
- }
-
- else
- fprintf_unfiltered (gdb_stderr,
- "Gdb error: register no %d not implemented.\n",
- regno);
-
- if (errno)
- {
- perror ("ptrace write");
- errno = 0;
- }
-}
-
-/* Execute one dummy breakpoint instruction. This way we give the kernel
- a chance to do some housekeeping and update inferior's internal data,
- including u_area. */
-
-static void
-exec_one_dummy_insn ()
-{
-#define DUMMY_INSN_ADDR (TEXT_SEGMENT_BASE)+0x200
-
- char shadow_contents[BREAKPOINT_MAX]; /* Stash old bkpt addr contents */
- int status, pid;
- CORE_ADDR prev_pc;
-
- /* We plant one dummy breakpoint into DUMMY_INSN_ADDR address. We
- assume that this address will never be executed again by the real
- code. */
-
- target_insert_breakpoint (DUMMY_INSN_ADDR, shadow_contents);
-
- errno = 0;
-
- /* You might think this could be done with a single ptrace call, and
- you'd be correct for just about every platform I've ever worked
- on. However, rs6000-ibm-aix4.1.3 seems to have screwed this up --
- the inferior never hits the breakpoint (it's also worth noting
- powerpc-ibm-aix4.1.3 works correctly). */
- prev_pc = read_pc ();
- write_pc (DUMMY_INSN_ADDR);
- ptrace (PT_CONTINUE, inferior_pid, (PTRACE_ARG3_TYPE)1, 0, 0);
-
- if (errno)
- perror ("pt_continue");
-
- do {
- pid = wait (&status);
- } while (pid != inferior_pid);
-
- write_pc (prev_pc);
- target_remove_breakpoint (DUMMY_INSN_ADDR, shadow_contents);
-}
-
-static void
-fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
- char *core_reg_sect;
- unsigned core_reg_size;
- int which;
- CORE_ADDR reg_addr; /* Unused in this version */
-{
- /* fetch GPRs and special registers from the first register section
- in core bfd. */
- if (which == 0)
- {
- /* copy GPRs first. */
- memcpy (registers, core_reg_sect, 32 * 4);
-
- /* gdb's internal register template and bfd's register section layout
- should share a common include file. FIXMEmgo */
- /* then comes special registes. They are supposed to be in the same
- order in gdb template and bfd `.reg' section. */
- core_reg_sect += (32 * 4);
- memcpy (&registers [REGISTER_BYTE (FIRST_UISA_SP_REGNUM)],
- core_reg_sect,
- (LAST_UISA_SP_REGNUM - FIRST_UISA_SP_REGNUM + 1) * 4);
- }
-
- /* fetch floating point registers from register section 2 in core bfd. */
- else if (which == 2)
- memcpy (&registers [REGISTER_BYTE (FP0_REGNUM)], core_reg_sect, 32 * 8);
-
- else
- fprintf_unfiltered
- (gdb_stderr,
- "Gdb error: unknown parameter to fetch_core_registers().\n");
-}
-
-/* handle symbol translation on vmapping */
-
-static void
-vmap_symtab (vp)
- register struct vmap *vp;
-{
- register struct objfile *objfile;
- struct section_offsets *new_offsets;
- int i;
-
- objfile = vp->objfile;
- if (objfile == NULL)
- {
- /* OK, it's not an objfile we opened ourselves.
- Currently, that can only happen with the exec file, so
- relocate the symbols for the symfile. */
- if (symfile_objfile == NULL)
- return;
- objfile = symfile_objfile;
- }
-
- new_offsets = alloca
- (sizeof (struct section_offsets)
- + sizeof (new_offsets->offsets) * objfile->num_sections);
-
- for (i = 0; i < objfile->num_sections; ++i)
- ANOFFSET (new_offsets, i) = ANOFFSET (objfile->section_offsets, i);
-
- /* The symbols in the object file are linked to the VMA of the section,
- relocate them VMA relative. */
- ANOFFSET (new_offsets, SECT_OFF_TEXT) = vp->tstart - vp->tvma;
- ANOFFSET (new_offsets, SECT_OFF_DATA) = vp->dstart - vp->dvma;
- ANOFFSET (new_offsets, SECT_OFF_BSS) = vp->dstart - vp->dvma;
-
- objfile_relocate (objfile, new_offsets);
-}
-
-/* Add symbols for an objfile. */
-
-static int
-objfile_symbol_add (arg)
- char *arg;
-{
- struct objfile *obj = (struct objfile *) arg;
-
- syms_from_objfile (obj, 0, 0, 0);
- new_symfile_objfile (obj, 0, 0);
- return 1;
-}
-
-/* Add a new vmap entry based on ldinfo() information.
-
- If ldi->ldinfo_fd is not valid (e.g. this struct ld_info is from a
- core file), the caller should set it to -1, and we will open the file.
-
- Return the vmap new entry. */
-
-static struct vmap *
-add_vmap (ldi)
- register struct ld_info *ldi;
-{
- bfd *abfd, *last;
- register char *mem, *objname;
- struct objfile *obj;
- struct vmap *vp;
-
- /* This ldi structure was allocated using alloca() in
- xcoff_relocate_symtab(). Now we need to have persistent object
- and member names, so we should save them. */
-
- mem = ldi->ldinfo_filename + strlen (ldi->ldinfo_filename) + 1;
- mem = savestring (mem, strlen (mem));
- objname = savestring (ldi->ldinfo_filename, strlen (ldi->ldinfo_filename));
-
- if (ldi->ldinfo_fd < 0)
- /* Note that this opens it once for every member; a possible
- enhancement would be to only open it once for every object. */
- abfd = bfd_openr (objname, gnutarget);
- else
- abfd = bfd_fdopenr (objname, gnutarget, ldi->ldinfo_fd);
- if (!abfd)
- error ("Could not open `%s' as an executable file: %s",
- objname, bfd_errmsg (bfd_get_error ()));
-
- /* make sure we have an object file */
-
- if (bfd_check_format (abfd, bfd_object))
- vp = map_vmap (abfd, 0);
-
- else if (bfd_check_format (abfd, bfd_archive))
- {
- last = 0;
- /* FIXME??? am I tossing BFDs? bfd? */
- while ((last = bfd_openr_next_archived_file (abfd, last)))
- if (STREQ (mem, last->filename))
- break;
-
- if (!last)
- {
- bfd_close (abfd);
- /* FIXME -- should be error */
- warning ("\"%s\": member \"%s\" missing.", abfd->filename, mem);
- return 0;
- }
-
- if (!bfd_check_format(last, bfd_object))
- {
- bfd_close (last); /* XXX??? */
- goto obj_err;
- }
-
- vp = map_vmap (last, abfd);
- }
- else
- {
- obj_err:
- bfd_close (abfd);
- error ("\"%s\": not in executable format: %s.",
- objname, bfd_errmsg (bfd_get_error ()));
- /*NOTREACHED*/
- }
- obj = allocate_objfile (vp->bfd, 0, 0, 0);
- vp->objfile = obj;
-
-#ifndef SOLIB_SYMBOLS_MANUAL
- if (catch_errors (objfile_symbol_add, (char *)obj,
- "Error while reading shared library symbols:\n",
- RETURN_MASK_ALL))
- {
- /* Note this is only done if symbol reading was successful. */
- vmap_symtab (vp);
- vp->loaded = 1;
- }
-#endif
- return vp;
-}
-
-/* update VMAP info with ldinfo() information
- Input is ptr to ldinfo() results. */
-
-static void
-vmap_ldinfo (ldi)
- register struct ld_info *ldi;
-{
- struct stat ii, vi;
- register struct vmap *vp;
- int got_one, retried;
- int got_exec_file = 0;
-
- /* For each *ldi, see if we have a corresponding *vp.
- If so, update the mapping, and symbol table.
- If not, add an entry and symbol table. */
-
- do {
- char *name = ldi->ldinfo_filename;
- char *memb = name + strlen(name) + 1;
-
- retried = 0;
-
- if (fstat (ldi->ldinfo_fd, &ii) < 0)
- {
- /* The kernel sets ld_info to -1, if the process is still using the
- object, and the object is removed. Keep the symbol info for the
- removed object and issue a warning. */
- warning ("%s (fd=%d) has disappeared, keeping its symbols",
- name, ldi->ldinfo_fd);
- continue;
- }
- retry:
- for (got_one = 0, vp = vmap; vp; vp = vp->nxt)
- {
- struct objfile *objfile;
-
- /* First try to find a `vp', which is the same as in ldinfo.
- If not the same, just continue and grep the next `vp'. If same,
- relocate its tstart, tend, dstart, dend values. If no such `vp'
- found, get out of this for loop, add this ldi entry as a new vmap
- (add_vmap) and come back, find its `vp' and so on... */
-
- /* The filenames are not always sufficient to match on. */
-
- if ((name[0] == '/' && !STREQ(name, vp->name))
- || (memb[0] && !STREQ(memb, vp->member)))
- continue;
-
- /* See if we are referring to the same file.
- We have to check objfile->obfd, symfile.c:reread_symbols might
- have updated the obfd after a change. */
- objfile = vp->objfile == NULL ? symfile_objfile : vp->objfile;
- if (objfile == NULL
- || objfile->obfd == NULL
- || bfd_stat (objfile->obfd, &vi) < 0)
- {
- warning ("Unable to stat %s, keeping its symbols", name);
- continue;
- }
-
- if (ii.st_dev != vi.st_dev || ii.st_ino != vi.st_ino)
- continue;
-
- if (!retried)
- close (ldi->ldinfo_fd);
-
- ++got_one;
-
- /* Found a corresponding VMAP. Remap! */
-
- /* We can assume pointer == CORE_ADDR, this code is native only. */
- vp->tstart = (CORE_ADDR) ldi->ldinfo_textorg;
- vp->tend = vp->tstart + ldi->ldinfo_textsize;
- vp->dstart = (CORE_ADDR) ldi->ldinfo_dataorg;
- vp->dend = vp->dstart + ldi->ldinfo_datasize;
-
- /* The run time loader maps the file header in addition to the text
- section and returns a pointer to the header in ldinfo_textorg.
- Adjust the text start address to point to the real start address
- of the text section. */
- vp->tstart += vp->toffs;
-
- /* The objfile is only NULL for the exec file. */
- if (vp->objfile == NULL)
- got_exec_file = 1;
-
- /* relocate symbol table(s). */
- vmap_symtab (vp);
-
- /* There may be more, so we don't break out of the loop. */
- }
-
- /* if there was no matching *vp, we must perforce create the sucker(s) */
- if (!got_one && !retried)
- {
- add_vmap (ldi);
- ++retried;
- goto retry;
- }
- } while (ldi->ldinfo_next
- && (ldi = (void *) (ldi->ldinfo_next + (char *) ldi)));
-
- /* If we don't find the symfile_objfile anywhere in the ldinfo, it
- is unlikely that the symbol file is relocated to the proper
- address. And we might have attached to a process which is
- running a different copy of the same executable. */
- if (symfile_objfile != NULL && !got_exec_file)
- {
- warning_begin ();
- fputs_unfiltered ("Symbol file ", gdb_stderr);
- fputs_unfiltered (symfile_objfile->name, gdb_stderr);
- fputs_unfiltered ("\nis not mapped; discarding it.\n\
-If in fact that file has symbols which the mapped files listed by\n\
-\"info files\" lack, you can load symbols with the \"symbol-file\" or\n\
-\"add-symbol-file\" commands (note that you must take care of relocating\n\
-symbols to the proper address).\n", gdb_stderr);
- free_objfile (symfile_objfile);
- symfile_objfile = NULL;
- }
- breakpoint_re_set ();
-}
-
-/* As well as symbol tables, exec_sections need relocation. After
- the inferior process' termination, there will be a relocated symbol
- table exist with no corresponding inferior process. At that time, we
- need to use `exec' bfd, rather than the inferior process's memory space
- to look up symbols.
-
- `exec_sections' need to be relocated only once, as long as the exec
- file remains unchanged.
-*/
-
-static void
-vmap_exec ()
-{
- static bfd *execbfd;
- int i;
-
- if (execbfd == exec_bfd)
- return;
-
- execbfd = exec_bfd;
-
- if (!vmap || !exec_ops.to_sections)
- error ("vmap_exec: vmap or exec_ops.to_sections == 0\n");
-
- for (i=0; &exec_ops.to_sections[i] < exec_ops.to_sections_end; i++)
- {
- if (STREQ(".text", exec_ops.to_sections[i].the_bfd_section->name))
- {
- exec_ops.to_sections[i].addr += vmap->tstart - vmap->tvma;
- exec_ops.to_sections[i].endaddr += vmap->tstart - vmap->tvma;
- }
- else if (STREQ(".data", exec_ops.to_sections[i].the_bfd_section->name))
- {
- exec_ops.to_sections[i].addr += vmap->dstart - vmap->dvma;
- exec_ops.to_sections[i].endaddr += vmap->dstart - vmap->dvma;
- }
- else if (STREQ(".bss", exec_ops.to_sections[i].the_bfd_section->name))
- {
- exec_ops.to_sections[i].addr += vmap->dstart - vmap->dvma;
- exec_ops.to_sections[i].endaddr += vmap->dstart - vmap->dvma;
- }
- }
-}
-
-/* xcoff_relocate_symtab - hook for symbol table relocation.
- also reads shared libraries.. */
-
-void
-xcoff_relocate_symtab (pid)
- unsigned int pid;
-{
-#define MAX_LOAD_SEGS 64 /* maximum number of load segments */
-
- struct ld_info *ldi;
-
- ldi = (void *) alloca(MAX_LOAD_SEGS * sizeof (*ldi));
-
- /* According to my humble theory, AIX has some timing problems and
- when the user stack grows, kernel doesn't update stack info in time
- and ptrace calls step on user stack. That is why we sleep here a little,
- and give kernel to update its internals. */
-
- usleep (36000);
-
- errno = 0;
- ptrace (PT_LDINFO, pid, (PTRACE_ARG3_TYPE) ldi,
- MAX_LOAD_SEGS * sizeof(*ldi), (int *) ldi);
- if (errno)
- perror_with_name ("ptrace ldinfo");
-
- vmap_ldinfo (ldi);
-
- /* relocate the exec and core sections as well. */
- vmap_exec ();
-}
-
-/* Core file stuff. */
-
-/* Relocate symtabs and read in shared library info, based on symbols
- from the core file. */
-
-void
-xcoff_relocate_core (target)
- struct target_ops *target;
-{
-/* Offset of member MEMBER in a struct of type TYPE. */
-#ifndef offsetof
-#define offsetof(TYPE, MEMBER) ((int) &((TYPE *)0)->MEMBER)
-#endif
-
-/* Size of a struct ld_info except for the variable-length filename. */
-#define LDINFO_SIZE (offsetof (struct ld_info, ldinfo_filename))
-
- sec_ptr ldinfo_sec;
- int offset = 0;
- struct ld_info *ldip;
- struct vmap *vp;
-
- /* Allocated size of buffer. */
- int buffer_size = LDINFO_SIZE;
- char *buffer = xmalloc (buffer_size);
- struct cleanup *old = make_cleanup (free_current_contents, &buffer);
-
- /* FIXME, this restriction should not exist. For now, though I'll
- avoid coredumps with error() pending a real fix. */
- if (vmap == NULL)
- error
- ("Can't debug a core file without an executable file (on the RS/6000)");
-
- ldinfo_sec = bfd_get_section_by_name (core_bfd, ".ldinfo");
- if (ldinfo_sec == NULL)
- {
- bfd_err:
- fprintf_filtered (gdb_stderr, "Couldn't get ldinfo from core file: %s\n",
- bfd_errmsg (bfd_get_error ()));
- do_cleanups (old);
- return;
- }
- do
- {
- int i;
- int names_found = 0;
-
- /* Read in everything but the name. */
- if (bfd_get_section_contents (core_bfd, ldinfo_sec, buffer,
- offset, LDINFO_SIZE) == 0)
- goto bfd_err;
-
- /* Now the name. */
- i = LDINFO_SIZE;
- do
- {
- if (i == buffer_size)
- {
- buffer_size *= 2;
- buffer = xrealloc (buffer, buffer_size);
- }
- if (bfd_get_section_contents (core_bfd, ldinfo_sec, &buffer[i],
- offset + i, 1) == 0)
- goto bfd_err;
- if (buffer[i++] == '\0')
- ++names_found;
- } while (names_found < 2);
-
- ldip = (struct ld_info *) buffer;
-
- /* Can't use a file descriptor from the core file; need to open it. */
- ldip->ldinfo_fd = -1;
-
- /* The first ldinfo is for the exec file, allocated elsewhere. */
- if (offset == 0)
- vp = vmap;
- else
- vp = add_vmap (ldip);
-
- offset += ldip->ldinfo_next;
-
- /* We can assume pointer == CORE_ADDR, this code is native only. */
- vp->tstart = (CORE_ADDR) ldip->ldinfo_textorg;
- vp->tend = vp->tstart + ldip->ldinfo_textsize;
- vp->dstart = (CORE_ADDR) ldip->ldinfo_dataorg;
- vp->dend = vp->dstart + ldip->ldinfo_datasize;
-
- /* The run time loader maps the file header in addition to the text
- section and returns a pointer to the header in ldinfo_textorg.
- Adjust the text start address to point to the real start address
- of the text section. */
- vp->tstart += vp->toffs;
-
- /* Unless this is the exec file,
- add our sections to the section table for the core target. */
- if (vp != vmap)
- {
- int count;
- struct section_table *stp;
- int update_coreops;
-
- /* We must update the to_sections field in the core_ops structure
- now to avoid dangling pointer dereferences. */
- update_coreops = core_ops.to_sections == target->to_sections;
-
- count = target->to_sections_end - target->to_sections;
- count += 2;
- target->to_sections = (struct section_table *)
- xrealloc (target->to_sections,
- sizeof (struct section_table) * count);
- target->to_sections_end = target->to_sections + count;
-
- /* Update the to_sections field in the core_ops structure
- if needed. */
- if (update_coreops)
- {
- core_ops.to_sections = target->to_sections;
- core_ops.to_sections_end = target->to_sections_end;
- }
- stp = target->to_sections_end - 2;
-
- stp->bfd = vp->bfd;
- stp->the_bfd_section = bfd_get_section_by_name (stp->bfd, ".text");
- stp->addr = vp->tstart;
- stp->endaddr = vp->tend;
- stp++;
-
- stp->bfd = vp->bfd;
- stp->the_bfd_section = bfd_get_section_by_name (stp->bfd, ".data");
- stp->addr = vp->dstart;
- stp->endaddr = vp->dend;
- }
-
- vmap_symtab (vp);
- } while (ldip->ldinfo_next != 0);
- vmap_exec ();
- breakpoint_re_set ();
- do_cleanups (old);
-}
-
-int
-kernel_u_size ()
-{
- return (sizeof (struct user));
-}
-
-/* Under AIX, we have to pass the correct TOC pointer to a function
- when calling functions in the inferior.
- We try to find the relative toc offset of the objfile containing PC
- and add the current load address of the data segment from the vmap. */
-
-static CORE_ADDR
-find_toc_address (pc)
- CORE_ADDR pc;
-{
- struct vmap *vp;
-
- for (vp = vmap; vp; vp = vp->nxt)
- {
- if (pc >= vp->tstart && pc < vp->tend)
- {
- /* vp->objfile is only NULL for the exec file. */
- return vp->dstart + get_toc_offset (vp->objfile == NULL
- ? symfile_objfile
- : vp->objfile);
- }
- }
- error ("Unable to find TOC entry for pc 0x%x\n", pc);
-}
-
-/* Register that we are able to handle rs6000 core file formats. */
-
-static struct core_fns rs6000_core_fns =
-{
- bfd_target_coff_flavour,
- fetch_core_registers,
- NULL
-};
-
-void
-_initialize_core_rs6000 ()
-{
- /* Initialize hook in rs6000-tdep.c for determining the TOC address when
- calling functions in the inferior. */
- find_toc_address_hook = &find_toc_address;
-
- /* For native configurations, where this module is included, inform
- the xcoffsolib module where it can find the function for symbol table
- relocation at runtime. */
- xcoff_relocate_symtab_hook = &xcoff_relocate_symtab;
- add_core_fns (&rs6000_core_fns);
-}
generated by cgit v1.1 at 2024-12-02 14:07:55 +0000