+++ /dev/null
-Status: Checked in to HEAD after 6.3.
-
-2004-11-07 Andrew Cagney <cagney@redhat.com>
- Daniel Jacobowitz <dan@debian.org>
- Roland McGrath <roland@redhat.com>
-
- * Makefile.in (symfile-mem.o): Update dependencies.
- * i386-linux-tdep.c (i386_linux_dwarf_signal_frame_p): New.
- (i386_linux_init_abi): Call dwarf2_frame_set_signal_frame_p.
- * inf-ptrace.c (inf_ptrace_attach): Call
- observer_notify_inferior_created.
- * inftarg.c (child_attach): Likewise.
- * symfile-mem.c: Include "observer.h", "auxv.h", and "elf/common.h".
- (symbol_file_add_from_memory): Take NAME argument. Use it for
- the new BFD's filename.
- (add_symbol_file_from_memory_command): Update call to
- symbol_file_add_from_memory.
- (struct symbol_file_add_from_memory_args, add_vsyscall_page)
- (symbol_file_add_from_memory_wrapper): New.
- (_initialize_symfile_mem): Register add_vsyscall_page as an
- inferior_created observer.
-
-Index: gdb-6.3/gdb/i386-linux-tdep.c
-===================================================================
---- gdb-6.3.orig/gdb/i386-linux-tdep.c 2004-08-06 16:58:28.000000000 -0400
-+++ gdb-6.3/gdb/i386-linux-tdep.c 2004-11-10 00:55:06.669398770 -0500
-@@ -27,6 +27,7 @@
- #include "inferior.h"
- #include "osabi.h"
- #include "reggroups.h"
-+#include "dwarf2-frame.h"
-
- #include "gdb_string.h"
-
-@@ -244,6 +245,27 @@ i386_linux_sigtramp_p (struct frame_info
- || strcmp ("__restore_rt", name) == 0);
- }
-
-+/* Return one if the unwound PC from NEXT_FRAME is in a signal trampoline
-+ which may have DWARF-2 CFI. */
-+
-+static int
-+i386_linux_dwarf_signal_frame_p (struct gdbarch *gdbarch,
-+ struct frame_info *next_frame)
-+{
-+ CORE_ADDR pc = frame_pc_unwind (next_frame);
-+ char *name;
-+
-+ find_pc_partial_function (pc, &name, NULL, NULL);
-+
-+ /* If a vsyscall DSO is in use, the signal trampolines may have these
-+ names. */
-+ if (name && (strcmp (name, "__kernel_sigreturn") == 0
-+ || strcmp (name, "__kernel_rt_sigreturn") == 0))
-+ return 1;
-+
-+ return 0;
-+}
-+
- /* Offset to struct sigcontext in ucontext, from <asm/ucontext.h>. */
- #define I386_LINUX_UCONTEXT_SIGCONTEXT_OFFSET 20
-
-@@ -414,6 +436,8 @@ i386_linux_init_abi (struct gdbarch_info
-
- /* GNU/Linux uses the dynamic linker included in the GNU C Library. */
- set_gdbarch_skip_solib_resolver (gdbarch, glibc_skip_solib_resolver);
-+
-+ dwarf2_frame_set_signal_frame_p (gdbarch, i386_linux_dwarf_signal_frame_p);
- }
-
- /* Provide a prototype to silence -Wmissing-prototypes. */
-Index: gdb-6.3/gdb/inf-ptrace.c
-===================================================================
---- gdb-6.3.orig/gdb/inf-ptrace.c 2004-10-15 09:29:33.000000000 -0400
-+++ gdb-6.3/gdb/inf-ptrace.c 2004-11-10 00:53:43.697615843 -0500
-@@ -220,6 +220,10 @@ inf_ptrace_attach (char *args, int from_
-
- inferior_ptid = pid_to_ptid (pid);
- push_target (ptrace_ops_hack);
-+
-+ /* Do this first, before anything has had a chance to query the
-+ inferior's symbol table or similar. */
-+ observer_notify_inferior_created (¤t_target, from_tty);
- }
-
- static void
-Index: gdb-6.3/gdb/inftarg.c
-===================================================================
---- gdb-6.3.orig/gdb/inftarg.c 2004-10-08 16:29:47.000000000 -0400
-+++ gdb-6.3/gdb/inftarg.c 2004-11-10 00:53:43.711613107 -0500
-@@ -211,6 +211,10 @@ child_attach (char *args, int from_tty)
-
- inferior_ptid = pid_to_ptid (pid);
- push_target (&deprecated_child_ops);
-+
-+ /* Do this first, before anything has had a chance to query the
-+ inferior's symbol table or similar. */
-+ observer_notify_inferior_created (¤t_target, from_tty);
- }
-
- #if !defined(CHILD_POST_ATTACH)
-Index: gdb-6.3/gdb/symfile-mem.c
-===================================================================
---- gdb-6.3.orig/gdb/symfile-mem.c 2004-07-17 10:24:07.000000000 -0400
-+++ gdb-6.3/gdb/symfile-mem.c 2004-11-10 00:53:43.722610958 -0500
-@@ -52,13 +52,19 @@
- #include "target.h"
- #include "value.h"
- #include "symfile.h"
-+#include "observer.h"
-+#include "auxv.h"
-+#include "elf/common.h"
-
-
- /* Read inferior memory at ADDR to find the header of a loaded object file
- and read its in-core symbols out of inferior memory. TEMPL is a bfd
-- representing the target's format. */
-+ representing the target's format. NAME is the name to use for this
-+ symbol file in messages; it can be NULL or a malloc-allocated string
-+ which will be attached to the BFD. */
- static struct objfile *
--symbol_file_add_from_memory (struct bfd *templ, CORE_ADDR addr, int from_tty)
-+symbol_file_add_from_memory (struct bfd *templ, CORE_ADDR addr, char *name,
-+ int from_tty)
- {
- struct objfile *objf;
- struct bfd *nbfd;
-@@ -75,7 +81,10 @@ symbol_file_add_from_memory (struct bfd
- if (nbfd == NULL)
- error ("Failed to read a valid object file image from memory.");
-
-- nbfd->filename = xstrdup ("shared object read from target memory");
-+ if (name == NULL)
-+ nbfd->filename = xstrdup ("shared object read from target memory");
-+ else
-+ nbfd->filename = name;
-
- if (!bfd_check_format (nbfd, bfd_object))
- {
-@@ -129,7 +138,73 @@ add_symbol_file_from_memory_command (cha
- error ("\
- Must use symbol-file or exec-file before add-symbol-file-from-memory.");
-
-- symbol_file_add_from_memory (templ, addr, from_tty);
-+ symbol_file_add_from_memory (templ, addr, NULL, from_tty);
-+}
-+
-+/* Arguments for symbol_file_add_from_memory_wrapper. */
-+
-+struct symbol_file_add_from_memory_args
-+{
-+ struct bfd *bfd;
-+ CORE_ADDR sysinfo_ehdr;
-+ char *name;
-+ int from_tty;
-+};
-+
-+/* Wrapper function for symbol_file_add_from_memory, for
-+ catch_exceptions. */
-+
-+static int
-+symbol_file_add_from_memory_wrapper (struct ui_out *uiout, void *data)
-+{
-+ struct symbol_file_add_from_memory_args *args = data;
-+
-+ symbol_file_add_from_memory (args->bfd, args->sysinfo_ehdr, args->name,
-+ args->from_tty);
-+ return 0;
-+}
-+
-+/* Try to add the symbols for the vsyscall page, if there is one. This function
-+ is called via the inferior_created observer. */
-+
-+static void
-+add_vsyscall_page (struct target_ops *target, int from_tty)
-+{
-+ CORE_ADDR sysinfo_ehdr;
-+
-+ if (target_auxv_search (target, AT_SYSINFO_EHDR, &sysinfo_ehdr) > 0
-+ && sysinfo_ehdr != (CORE_ADDR) 0)
-+ {
-+ struct bfd *bfd;
-+ struct symbol_file_add_from_memory_args args;
-+
-+ if (core_bfd != NULL)
-+ bfd = core_bfd;
-+ else if (exec_bfd != NULL)
-+ bfd = exec_bfd;
-+ else
-+ /* FIXME: cagney/2004-05-06: Should not require an existing
-+ BFD when trying to create a run-time BFD of the VSYSCALL
-+ page in the inferior. Unfortunately that's the current
-+ interface so for the moment bail. Introducing a
-+ ``bfd_runtime'' (a BFD created using the loaded image) file
-+ format should fix this. */
-+ {
-+ warning ("could not load vsyscall page because no executable was specified");
-+ warning ("try using the \"file\" command first");
-+ return;
-+ }
-+ args.bfd = bfd;
-+ args.sysinfo_ehdr = sysinfo_ehdr;
-+ xasprintf (&args.name, "system-supplied DSO at 0x%s",
-+ paddr_nz (sysinfo_ehdr));
-+ /* Pass zero for FROM_TTY, because the action of loading the
-+ vsyscall DSO was not triggered by the user, even if the user
-+ typed "run" at the TTY. */
-+ args.from_tty = 0;
-+ catch_exceptions (uiout, symbol_file_add_from_memory_wrapper,
-+ &args, NULL, RETURN_MASK_ALL);
-+ }
- }
-
- \f
-@@ -143,4 +218,7 @@ Load the symbols out of memory from a dy
- Give an expression for the address of the file's shared object file header.",
- &cmdlist);
-
-+ /* Want to know of each new inferior so that its vsyscall info can
-+ be extracted. */
-+ observer_attach_inferior_created (add_vsyscall_page);
- }
-Index: gdb-6.3/gdb/Makefile.in
-===================================================================
---- gdb-6.3.orig/gdb/Makefile.in 2004-11-10 00:29:00.000000000 -0500
-+++ gdb-6.3/gdb/Makefile.in 2004-11-10 00:54:47.728100986 -0500
-@@ -2020,7 +2020,7 @@ i386-linux-nat.o: i386-linux-nat.c $(def
- i386-linux-tdep.o: i386-linux-tdep.c $(defs_h) $(gdbcore_h) $(frame_h) \
- $(value_h) $(regcache_h) $(inferior_h) $(osabi_h) $(reggroups_h) \
- $(gdb_string_h) $(i386_tdep_h) $(i386_linux_tdep_h) $(glibc_tdep_h) \
-- $(solib_svr4_h)
-+ $(solib_svr4_h) $(dwarf2_frame_h)
- i386ly-tdep.o: i386ly-tdep.c $(defs_h) $(gdbcore_h) $(inferior_h) \
- $(regcache_h) $(target_h) $(osabi_h) $(i386_tdep_h)
- i386-nat.o: i386-nat.c $(defs_h) $(breakpoint_h) $(command_h) $(gdbcmd_h)
-@@ -2606,7 +2606,8 @@ symfile.o: symfile.c $(defs_h) $(bfdlink
- $(hashtab_h) $(readline_h) $(gdb_assert_h) $(block_h) \
- $(gdb_string_h) $(gdb_stat_h)
- symfile-mem.o: symfile-mem.c $(defs_h) $(symtab_h) $(gdbcore_h) \
-- $(objfiles_h) $(gdbcmd_h) $(target_h) $(value_h) $(symfile_h)
-+ $(objfiles_h) $(gdbcmd_h) $(target_h) $(value_h) $(symfile_h) \
-+ $(observer_h) $(auxv_h) $(elf_common_h)
- symmisc.o: symmisc.c $(defs_h) $(symtab_h) $(gdbtypes_h) $(bfd_h) \
- $(symfile_h) $(objfiles_h) $(breakpoint_h) $(command_h) \
- $(gdb_obstack_h) $(language_h) $(bcache_h) $(block_h) $(gdb_regex_h) \
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