diff options
Diffstat (limited to 'toolchain/gdb/patches/650-debian_vsyscall-gdb-support.patch')
| -rw-r--r-- | toolchain/gdb/patches/650-debian_vsyscall-gdb-support.patch | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/toolchain/gdb/patches/650-debian_vsyscall-gdb-support.patch b/toolchain/gdb/patches/650-debian_vsyscall-gdb-support.patch new file mode 100644 index 000000000..e725f9c54 --- /dev/null +++ b/toolchain/gdb/patches/650-debian_vsyscall-gdb-support.patch @@ -0,0 +1,245 @@ +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); ++ } + } + + +@@ -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) \ |