Date: Fri, 27 Oct 2017 21:07:50 +0200
Subject: gdb-6.6-buildid-locate.patch
-FileName: gdb-6.6-buildid-locate.patch
-
;; New locating of the matching binaries from the pure core file (build-id).
;;=push+jan
----
- gdb/build-id.c | 753 +++++++++++++++++++++++-
- gdb/build-id.h | 15 +-
- gdb/coffread.c | 2 +-
- gdb/corelow.c | 67 +++
- gdb/doc/gdb.texinfo | 21 +
- gdb/dwarf2read.c | 2 +-
- gdb/elfread.c | 7 +-
- gdb/objfiles.h | 4 +
- gdb/python/py-objfile.c | 4 +-
- gdb/solib-svr4.c | 50 +-
- gdb/symfile.h | 4 +
- gdb/testsuite/gdb.base/corefile.exp | 30 +
- gdb/testsuite/gdb.base/new-ui-pending-input.exp | 1 +
- gdb/testsuite/lib/gdb.exp | 10 +
- gdb/testsuite/lib/mi-support.exp | 10 +
- 15 files changed, 940 insertions(+), 40 deletions(-)
+diff --git a/bfd/libbfd-in.h b/bfd/libbfd-in.h
+--- a/bfd/libbfd-in.h
++++ b/bfd/libbfd-in.h
+@@ -121,7 +121,7 @@ static inline char *
+ bfd_strdup (const char *str)
+ {
+ size_t len = strlen (str) + 1;
+- char *buf = bfd_malloc (len);
++ char *buf = (char *) bfd_malloc (len);
+ if (buf != NULL)
+ memcpy (buf, str, len);
+ return buf;
+diff --git a/bfd/libbfd.h b/bfd/libbfd.h
+--- a/bfd/libbfd.h
++++ b/bfd/libbfd.h
+@@ -126,7 +126,7 @@ static inline char *
+ bfd_strdup (const char *str)
+ {
+ size_t len = strlen (str) + 1;
+- char *buf = bfd_malloc (len);
++ char *buf = (char *) bfd_malloc (len);
+ if (buf != NULL)
+ memcpy (buf, str, len);
+ return buf;
diff --git a/gdb/build-id.c b/gdb/build-id.c
-index 945da4f3cf..5740628386 100644
--- a/gdb/build-id.c
+++ b/gdb/build-id.c
-@@ -26,11 +26,67 @@
+@@ -24,13 +24,70 @@
+ #include "gdbsupport/gdb_vecs.h"
+ #include "symfile.h"
#include "objfiles.h"
- #include "filenames.h"
- #include "gdbcore.h"
-+#include "libbfd.h"
-+#include "gdbcore.h"
-+#include "gdbcmd.h"
-+#include "observer.h"
++#include <sys/stat.h>
++#include "elf-bfd.h"
++#include "elf/common.h"
+#include "elf/external.h"
+#include "elf/internal.h"
-+#include "elf/common.h"
-+#include "elf-bfd.h"
-+#include <sys/stat.h>
+ #include "filenames.h"
++#include "gdb_bfd.h"
++#include "gdbcmd.h"
+ #include "gdbcore.h"
++#include "objfiles.h"
++#include "observable.h"
++#include "symfile.h"
+
+#define BUILD_ID_VERBOSE_NONE 0
+#define BUILD_ID_VERBOSE_FILENAMES 1
+ && namesz == sizeof "GNU"
+ && memcmp (xnp->name, "GNU", sizeof "GNU") == 0)
+ {
-+ size_t size = descsz;
++ size_t sz = descsz;
+ gdb_byte *data = (gdb_byte *) descdata;
+ struct bfd_build_id *retval;
+
-+ retval = (struct bfd_build_id *) xmalloc (sizeof *retval - 1 + size);
-+ retval->size = size;
-+ memcpy (retval->data, data, size);
++ retval = (struct bfd_build_id *) xmalloc (sizeof *retval - 1 + sz);
++ retval->size = sz;
++ memcpy (retval->data, data, sz);
+
+ return retval;
+ }
-build_id_bfd_get (bfd *abfd)
+build_id_bfd_shdr_get (bfd *abfd)
{
- if (!bfd_check_format (abfd, bfd_object))
- return NULL;
-@@ -42,6 +98,348 @@ build_id_bfd_get (bfd *abfd)
+ if (!bfd_check_format (abfd, bfd_object)
+ && !bfd_check_format (abfd, bfd_core))
+@@ -43,6 +100,348 @@ build_id_bfd_get (bfd *abfd)
return NULL;
}
+
+static void build_id_addr_candidate (bfd *abfd, asection *sect, void *obj)
+{
-+ if (build_id_addr >= bfd_section_vma (abfd, sect))
++ if (build_id_addr >= bfd_section_vma (sect))
+ {
+ struct build_id_addr_sect *candidate;
+
+ candidate = candidate->next)
+ {
+ i_phdr = elf_get_phdr (core_bfd,
-+ bfd_section_vma (core_bfd, candidate->sect),
++ bfd_section_vma (candidate->sect),
+ &e_phnum, &loadbase);
+ if (i_phdr != NULL)
+ break;
/* See build-id.h. */
int
-@@ -50,7 +448,7 @@ build_id_verify (bfd *abfd, size_t check_len, const bfd_byte *check)
+@@ -51,7 +450,7 @@ build_id_verify (bfd *abfd, size_t check_len, const bfd_byte *check)
const struct bfd_build_id *found;
int retval = 0;
if (found == NULL)
warning (_("File \"%s\" has no build-id, file skipped"),
-@@ -65,23 +463,54 @@ build_id_verify (bfd *abfd, size_t check_len, const bfd_byte *check)
+@@ -66,56 +465,159 @@ build_id_verify (bfd *abfd, size_t check_len, const bfd_byte *check)
return retval;
}
+ return retval;
+}
+
- /* See build-id.h. */
+ /* Helper for build_id_to_debug_bfd. LINK is a path to a potential
+ build-id-based separate debug file, potentially a symlink to the real file.
+ If the file exists and matches BUILD_ID, return a BFD reference to it. */
- gdb_bfd_ref_ptr
--build_id_to_debug_bfd (size_t build_id_len, const bfd_byte *build_id)
-+build_id_to_debug_bfd (size_t build_id_len, const bfd_byte *build_id,
-+ char **link_return, int add_debug_suffix)
+ static gdb_bfd_ref_ptr
+-build_id_to_debug_bfd_1 (const std::string &link, size_t build_id_len,
+- const bfd_byte *build_id)
++build_id_to_debug_bfd_1 (const std::string &orig_link, size_t build_id_len,
++ const bfd_byte *build_id, char **link_return)
{
-- char *link, *debugdir;
-+ char *link, *debugdir, *link_all = NULL;
- VEC (char_ptr) *debugdir_vec;
- struct cleanup *back_to;
- int ix;
- gdb_bfd_ref_ptr abfd;
-- int alloc_len;
-
- /* DEBUG_FILE_DIRECTORY/.build-id/ab/cdef */
-- alloc_len = (strlen (debug_file_directory)
-- + (sizeof "/.build-id/" - 1) + 1
-- + 2 * build_id_len + (sizeof ".debug" - 1) + 1);
-- link = (char *) alloca (alloc_len);
-+ link = (char *) xmalloc (strlen (debug_file_directory) + 2 * build_id_len + 50);
++ gdb_bfd_ref_ptr ret_bfd = {};
++ std::string ret_link;
++
+ if (separate_debug_file_debug)
+ {
+- printf_unfiltered (_(" Trying %s..."), link.c_str ());
++ printf_unfiltered (_(" Trying %s..."), orig_link.c_str ());
+ gdb_flush (gdb_stdout);
+ }
- /* Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will
- cause "/.build-id/..." lookups. */
-@@ -94,9 +523,12 @@ build_id_to_debug_bfd (size_t build_id_len, const bfd_byte *build_id)
- size_t debugdir_len = strlen (debugdir);
- const gdb_byte *data = build_id;
- size_t size = build_id_len;
-- char *s;
- char *filename = NULL;
- struct cleanup *inner;
-+ unsigned seqno;
-+ struct stat statbuf_trash;
-+ /* Initialize it just to avoid a GCC false warning. */
-+ char *s, *link0 = NULL, *link0_resolved;
+- /* lrealpath() is expensive even for the usually non-existent files. */
+- gdb::unique_xmalloc_ptr<char> filename;
+- if (access (link.c_str (), F_OK) == 0)
+- filename.reset (lrealpath (link.c_str ()));
+-
+- if (filename == NULL)
++ for (unsigned seqno = 0;; seqno++)
+ {
+- if (separate_debug_file_debug)
+- printf_unfiltered (_(" no, unable to compute real path\n"));
++ std::string link = orig_link;
- memcpy (link, debugdir, debugdir_len);
- s = &link[debugdir_len];
-@@ -110,52 +542,299 @@ build_id_to_debug_bfd (size_t build_id_len, const bfd_byte *build_id)
- *s++ = '/';
- while (size-- > 0)
- s += sprintf (s, "%02x", (unsigned) *data++);
-- strcpy (s, ".debug");
+- return {};
+- }
++ if (seqno > 0)
++ {
++ /* There can be multiple build-id symlinks pointing to real files
++ with the same build-id (such as hard links). Some of the real
++ files may not be installed. */
++
++ string_appendf (link, ".%u", seqno);
++ }
- if (separate_debug_file_debug)
- printf_unfiltered (_(" Trying %s\n"), link);
+- /* We expect to be silent on the non-existing files. */
+- gdb_bfd_ref_ptr debug_bfd = gdb_bfd_open (filename.get (), gnutarget);
++ ret_link = link;
-- /* lrealpath() is expensive even for the usually non-existent files. */
-- if (access (link, F_OK) == 0)
-- filename = lrealpath (link);
-+ for (seqno = 0;; seqno++)
+- if (debug_bfd == NULL)
+- {
+- if (separate_debug_file_debug)
+- printf_unfiltered (_(" no, unable to open.\n"));
++ struct stat statbuf_trash;
++
++ /* `access' automatically dereferences LINK. */
++ if (lstat (link.c_str (), &statbuf_trash) != 0)
+ {
-+ char *s2;
++ /* Stop increasing SEQNO. */
++ break;
++ }
+
-+ if (seqno)
-+ {
-+ /* There can be multiple build-id symlinks pointing to real files
-+ with the same build-id (such as hard links). Some of the real
-+ files may not be installed. */
++ /* lrealpath() is expensive even for the usually non-existent files. */
++ gdb::unique_xmalloc_ptr<char> filename;
+
-+ s2 = s + sprintf (s, ".%u", seqno);
-+ }
-+ else
-+ s2 = s;
++ if (access (link.c_str (), F_OK) == 0)
++ filename.reset (lrealpath (link.c_str ()));
+
-+ if (add_debug_suffix)
-+ strcpy (s2, ".debug");
-+ else
-+ *s2 = 0;
++ if (filename == NULL)
++ {
++ if (separate_debug_file_debug)
++ printf_unfiltered (_(" no, unable to compute real path\n"));
+
-+ if (!seqno)
-+ {
-+ /* If none of the real files is found report as missing file
-+ always the non-.%u-suffixed file. */
-+ link0 = xstrdup (link);
-+ }
++ continue;
++ }
+
-+ /* `access' automatically dereferences LINK. */
-+ if (lstat (link, &statbuf_trash) != 0)
-+ {
-+ /* Stop increasing SEQNO. */
-+ break;
-+ }
++ /* We expect to be silent on the non-existing files. */
++ gdb_bfd_ref_ptr debug_bfd = gdb_bfd_open (filename.get (), gnutarget, -1);
+
+- return {};
++ if (debug_bfd == NULL)
++ {
++ if (separate_debug_file_debug)
++ printf_unfiltered (_(" no, unable to open.\n"));
+
-+ filename = lrealpath (link);
-+ if (filename == NULL)
-+ continue;
++ continue;
++ }
+
-+ /* We expect to be silent on the non-existing files. */
-+ inner = make_cleanup (xfree, filename);
-+ abfd = gdb_bfd_open (filename, gnutarget, -1);
-+ do_cleanups (inner);
++ if (!build_id_verify (debug_bfd.get(), build_id_len, build_id))
++ {
++ if (separate_debug_file_debug)
++ printf_unfiltered (_(" no, build-id does not match.\n"));
+
-+ if (abfd == NULL)
-+ continue;
++ continue;
++ }
+
-+ if (build_id_verify (abfd.get(), build_id_len, build_id))
-+ break;
++ ret_bfd = debug_bfd;
++ break;
+ }
+
+- if (!build_id_verify (debug_bfd.get(), build_id_len, build_id))
++ std::string link_all;
+
-+ abfd.release ();
++ if (ret_bfd != NULL)
+ {
+ if (separate_debug_file_debug)
+- printf_unfiltered (_(" no, build-id does not match.\n"));
+-
+- return {};
++ printf_unfiltered (_(" yes!\n"));
++ }
++ else
++ {
++ /* If none of the real files is found report as missing file
++ always the non-.%u-suffixed file. */
++ std::string link0 = orig_link;
+
-+ filename = NULL;
-+ }
-
-- if (filename == NULL)
-- continue;
-+ if (filename != NULL)
-+ {
-+ /* LINK_ALL is not used below in this non-NULL FILENAME case. */
-+ xfree (link0);
-+ break;
-+ }
-
-- /* We expect to be silent on the non-existing files. */
-- inner = make_cleanup (xfree, filename);
-- abfd = gdb_bfd_open (filename, gnutarget, -1);
-- do_cleanups (inner);
+ /* If the symlink has target request to install the target.
-+ BASE-debuginfo.rpm contains the symlink but BASE.rpm may be missing.
-+ https://bugzilla.redhat.com/show_bug.cgi?id=981154 */
-+ link0_resolved = link_resolve (link0, 0);
-+ xfree (link0);
-
-- if (abfd == NULL)
-- continue;
-+ if (link_all == NULL)
++ BASE-debuginfo.rpm contains the symlink but BASE.rpm may be missing.
++ https://bugzilla.redhat.com/show_bug.cgi?id=981154 */
++ std::string link0_resolved (link_resolve (link0.c_str (), 0));
++
++ if (link_all.empty ())
+ link_all = link0_resolved;
+ else
+ {
-+ size_t len_orig = strlen (link_all);
-
-- if (build_id_verify (abfd.get(), build_id_len, build_id))
-- break;
-+ link_all = (char *) xrealloc (link_all,
-+ len_orig + 1 + strlen (link0_resolved) + 1);
-
-- abfd.release ();
+ /* Use whitespace instead of DIRNAME_SEPARATOR to be compatible with
+ its possible use as an argument for installation command. */
-+ link_all[len_orig] = ' ';
-+
-+ strcpy (&link_all[len_orig + 1], link0_resolved);
-+ xfree (link0_resolved);
++ link_all += " " + link0_resolved;
+ }
-+ }
-+
+ }
+
+- if (separate_debug_file_debug)
+- printf_unfiltered (_(" yes!\n"));
+ if (link_return != NULL)
+ {
-+ if (abfd != NULL)
++ if (ret_bfd != NULL)
+ {
-+ *link_return = link;
-+ link = NULL;
++ *link_return = xstrdup (ret_link.c_str ());
+ }
+ else
+ {
-+ *link_return = link_all;
-+ link_all = NULL;
++ *link_return = xstrdup (link_all.c_str ());
+ }
- }
-+ xfree (link);
-+ xfree (link_all);
++ }
- do_cleanups (back_to);
- return abfd;
+- return debug_bfd;
++ return ret_bfd;
+ }
+
+ /* Common code for finding BFDs of a given build-id. This function
+@@ -124,7 +626,7 @@ build_id_to_debug_bfd_1 (const std::string &link, size_t build_id_len,
+
+ static gdb_bfd_ref_ptr
+ build_id_to_bfd_suffix (size_t build_id_len, const bfd_byte *build_id,
+- const char *suffix)
++ const char *suffix, char **link_return)
+ {
+ /* Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will
+ cause "/.build-id/..." lookups. */
+@@ -147,16 +649,17 @@ build_id_to_bfd_suffix (size_t build_id_len, const bfd_byte *build_id,
+ if (size > 0)
+ {
+ size--;
+- string_appendf (link, "%02x/", (unsigned) *data++);
++ string_appendf (link, "%02x", (unsigned) *data++);
+ }
+-
++ if (size > 0)
++ link += "/";
+ while (size-- > 0)
+ string_appendf (link, "%02x", (unsigned) *data++);
+
+ link += suffix;
+
+ gdb_bfd_ref_ptr debug_bfd
+- = build_id_to_debug_bfd_1 (link, build_id_len, build_id);
++ = build_id_to_debug_bfd_1 (link, build_id_len, build_id, link_return);
+ if (debug_bfd != NULL)
+ return debug_bfd;
+
+@@ -170,7 +673,8 @@ build_id_to_bfd_suffix (size_t build_id_len, const bfd_byte *build_id,
+ if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) != 0)
+ {
+ link = gdb_sysroot + link;
+- debug_bfd = build_id_to_debug_bfd_1 (link, build_id_len, build_id);
++ debug_bfd = build_id_to_debug_bfd_1 (link, build_id_len, build_id,
++ link_return);
+ if (debug_bfd != NULL)
+ return debug_bfd;
+ }
+@@ -179,38 +683,208 @@ build_id_to_bfd_suffix (size_t build_id_len, const bfd_byte *build_id,
+ return {};
}
+char *
+{
+ gdb_bfd_ref_ptr abfd;
+ char *result;
-+
-+ abfd = build_id_to_debug_bfd (build_id->size, build_id->data, link_return, 0);
++
++ abfd = build_id_to_exec_bfd (build_id->size, build_id->data, link_return);
+ if (abfd == NULL)
+ return NULL;
+
-+ result = xstrdup (bfd_get_filename (abfd));
-+ abfd.release ();
++ result = xstrdup (bfd_get_filename (abfd.get ()));
+ return result;
+}
+
+
/* See build-id.h. */
- char *
+ gdb_bfd_ref_ptr
+-build_id_to_debug_bfd (size_t build_id_len, const bfd_byte *build_id)
++build_id_to_debug_bfd (size_t build_id_len, const bfd_byte *build_id,
++ char **link_return)
+ {
+- return build_id_to_bfd_suffix (build_id_len, build_id, ".debug");
++ return build_id_to_bfd_suffix (build_id_len, build_id, ".debug",
++ link_return);
+ }
+
+ /* See build-id.h. */
+
+ gdb_bfd_ref_ptr
+-build_id_to_exec_bfd (size_t build_id_len, const bfd_byte *build_id)
++build_id_to_exec_bfd (size_t build_id_len, const bfd_byte *build_id,
++ char **link_return)
+ {
+- return build_id_to_bfd_suffix (build_id_len, build_id, "");
++ return build_id_to_bfd_suffix (build_id_len, build_id, "", link_return);
+ }
+
+ /* See build-id.h. */
+
+ std::string
-find_separate_debug_file_by_buildid (struct objfile *objfile)
+find_separate_debug_file_by_buildid (struct objfile *objfile,
+ gdb::unique_xmalloc_ptr<char> *build_id_filename_return)
gdb_bfd_ref_ptr abfd (build_id_to_debug_bfd (build_id->size,
- build_id->data));
+ build_id->data,
-+ (!build_id_filename_return ? NULL : &build_id_filename_cstr), 1));
++ (!build_id_filename_return ? NULL : &build_id_filename_cstr)));
+ if (build_id_filename_return)
+ {
+ if (!build_id_filename_cstr)
/* Prevent looping on a stripped .debug file. */
if (abfd != NULL
&& filename_cmp (bfd_get_filename (abfd.get ()),
-@@ -167,3 +846,21 @@ find_separate_debug_file_by_buildid (struct objfile *objfile)
- }
- return NULL;
+@@ -223,3 +897,21 @@ find_separate_debug_file_by_buildid (struct objfile *objfile)
+
+ return std::string ();
}
+
+extern void _initialize_build_id (void);
+ show_build_id_verbose,
+ &setlist, &showlist);
+
-+ observer_attach_executable_changed (debug_print_executable_changed);
++ gdb::observers::executable_changed.attach (debug_print_executable_changed);
+}
diff --git a/gdb/build-id.h b/gdb/build-id.h
-index 0f13c7d4cf..2d105dba88 100644
--- a/gdb/build-id.h
+++ b/gdb/build-id.h
-@@ -22,9 +22,10 @@
-
+@@ -23,9 +23,10 @@
#include "gdb_bfd.h"
+ #include "gdbsupport/rsp-low.h"
-/* Locate NT_GNU_BUILD_ID from ABFD and return its content. */
+/* Separate debuginfo files have corrupted PHDR but SHDR is correct there.
/* Return true if ABFD has NT_GNU_BUILD_ID matching the CHECK value.
Otherwise, issue a warning and return false. */
-@@ -38,13 +39,19 @@ extern int build_id_verify (bfd *abfd,
- the caller. */
+@@ -38,21 +39,26 @@ extern int build_id_verify (bfd *abfd,
+ can be found, return NULL. */
extern gdb_bfd_ref_ptr build_id_to_debug_bfd (size_t build_id_len,
- const bfd_byte *build_id);
+ const bfd_byte *build_id,
-+ char **link_return,
-+ int add_debug_suffix);
++ char **link_return);
+
+extern char *build_id_to_filename (const struct bfd_build_id *build_id,
+ char **link_return);
+ /* Find and open a BFD for an executable file given a build-id. If no BFD
+ can be found, return NULL. The returned reference to the BFD must be
+ released by the caller. */
+
+ extern gdb_bfd_ref_ptr build_id_to_exec_bfd (size_t build_id_len,
+- const bfd_byte *build_id);
++ const bfd_byte *build_id,
++ char **link_return);
+
/* Find the separate debug file for OBJFILE, by using the build-id
- associated with OBJFILE's BFD. If successful, returns a malloc'd
- file name for the separate debug file. The caller must free this.
- Otherwise, returns NULL. */
+ associated with OBJFILE's BFD. If successful, returns the file name for the
+ separate debug file, otherwise, return an empty string. */
--extern char *find_separate_debug_file_by_buildid (struct objfile *objfile);
-+extern char *find_separate_debug_file_by_buildid (struct objfile *objfile,
+-extern std::string find_separate_debug_file_by_buildid
+- (struct objfile *objfile);
++extern std::string find_separate_debug_file_by_buildid (struct objfile *objfile,
+ gdb::unique_xmalloc_ptr<char> *build_id_filename_return);
- #endif /* BUILD_ID_H */
+ /* Return an hex-string representation of BUILD_ID. */
+
diff --git a/gdb/coffread.c b/gdb/coffread.c
-index fbbbb68f71..9698ec2191 100644
--- a/gdb/coffread.c
+++ b/gdb/coffread.c
-@@ -735,7 +735,7 @@ coff_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags)
+@@ -709,7 +709,8 @@ coff_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags)
+ /* Try to add separate debug file if no symbols table found. */
+ if (!objfile_has_partial_symbols (objfile))
{
- char *debugfile;
-
-- debugfile = find_separate_debug_file_by_buildid (objfile);
-+ debugfile = find_separate_debug_file_by_buildid (objfile, NULL);
+- std::string debugfile = find_separate_debug_file_by_buildid (objfile);
++ std::string debugfile = find_separate_debug_file_by_buildid (objfile,
++ NULL);
- if (debugfile == NULL)
+ if (debugfile.empty ())
debugfile = find_separate_debug_file_by_debuglink (objfile);
diff --git a/gdb/corelow.c b/gdb/corelow.c
-index 3a5256cb17..c5b642db81 100644
--- a/gdb/corelow.c
+++ b/gdb/corelow.c
-@@ -45,6 +45,10 @@
- #include "gdb_bfd.h"
- #include "completer.h"
- #include "filestuff.h"
+@@ -22,6 +22,10 @@
+ #include <signal.h>
+ #include <fcntl.h>
+ #include "frame.h" /* required by inferior.h */
+#include "auxv.h"
++#include "build-id.h"
+#include "elf/common.h"
+#include "gdbcmd.h"
-+#include "build-id.h"
-
- #ifndef O_LARGEFILE
- #define O_LARGEFILE 0
-@@ -264,6 +268,54 @@ add_to_thread_list (bfd *abfd, asection *asect, void *reg_sect_arg)
- inferior_ptid = ptid; /* Yes, make it current. */
+ #include "inferior.h"
+ #include "infrun.h"
+ #include "symtab.h"
+@@ -362,6 +366,8 @@ add_to_thread_list (bfd *abfd, asection *asect, void *reg_sect_arg)
+ switch_to_thread (thr); /* Yes, make it current. */
}
-+static int build_id_core_loads = 1;
-+
-+static void
-+build_id_locate_exec (int from_tty)
-+{
-+ CORE_ADDR at_entry;
-+ struct bfd_build_id *build_id;
-+ char *execfilename, *debug_filename;
-+ char *build_id_filename;
-+ struct cleanup *back_to;
-+
-+ if (exec_bfd != NULL || symfile_objfile != NULL)
-+ return;
-+
-+ if (target_auxv_search (¤t_target, AT_ENTRY, &at_entry) <= 0)
-+ return;
-+
-+ build_id = build_id_addr_get (at_entry);
-+ if (build_id == NULL)
-+ return;
-+ back_to = make_cleanup (xfree, build_id);
-+
-+ /* SYMFILE_OBJFILE should refer to the main executable (not only to its
-+ separate debug info file). gcc44+ keeps .eh_frame only in the main
-+ executable without its duplicate .debug_frame in the separate debug info
-+ file - such .eh_frame would not be found if SYMFILE_OBJFILE would refer
-+ directly to the separate debug info file. */
-+
-+ execfilename = build_id_to_filename (build_id, &build_id_filename);
-+ make_cleanup (xfree, build_id_filename);
-+
-+ if (execfilename != NULL)
-+ {
-+ make_cleanup (xfree, execfilename);
-+ exec_file_attach (execfilename, from_tty);
-+ symbol_file_add_main (execfilename,
-+ symfile_add_flag (!from_tty ? 0 : SYMFILE_VERBOSE));
-+ if (symfile_objfile != NULL)
-+ symfile_objfile->flags |= OBJF_BUILD_ID_CORE_LOADED;
-+ }
-+ else
-+ debug_print_missing (_("the main executable file"), build_id_filename);
++static bool build_id_core_loads = true;
+
-+ do_cleanups (back_to);
-+
-+ /* No automatic SOLIB_ADD as the libraries would get read twice. */
-+}
-+
- /* This routine opens and sets up the core file bfd. */
+ /* Issue a message saying we have no core to debug, if FROM_TTY. */
static void
-@@ -391,6 +443,14 @@ core_open (const char *arg, int from_tty)
- switch_to_thread (thread->ptid);
- }
+@@ -398,19 +404,25 @@ core_file_command (const char *filename, int from_tty)
+ static void
+ locate_exec_from_corefile_build_id (bfd *abfd, int from_tty)
+ {
+- const bfd_build_id *build_id = build_id_bfd_get (abfd);
++ const bfd_build_id *build_id = build_id_bfd_shdr_get (abfd);
+ if (build_id == nullptr)
+ return;
-+ /* Find the build_id identifiers. If it gets executed after
-+ POST_CREATE_INFERIOR we would clash with asking to discard the already
-+ loaded VDSO symbols. If it gets executed before bfd_map_over_sections
-+ INFERIOR_PTID is still not set and libthread_db initialization crashes on
-+ PID == 0 in ps_pglobal_lookup. */
-+ if (build_id_core_loads != 0)
-+ build_id_locate_exec (from_tty);
-+
- post_create_inferior (&core_ops, from_tty);
++ char *build_id_filename;
+ gdb_bfd_ref_ptr execbfd
+- = build_id_to_exec_bfd (build_id->size, build_id->data);
++ = build_id_to_exec_bfd (build_id->size, build_id->data,
++ &build_id_filename);
- /* Now go through the target stack looking for threads since there
-@@ -1040,4 +1100,11 @@ _initialize_corelow (void)
- init_core_ops ();
+ if (execbfd != nullptr)
+ {
+ exec_file_attach (bfd_get_filename (execbfd.get ()), from_tty);
+ symbol_file_add_main (bfd_get_filename (execbfd.get ()),
+ symfile_add_flag (from_tty ? SYMFILE_VERBOSE : 0));
++ if (symfile_objfile != NULL)
++ symfile_objfile->flags |= OBJF_BUILD_ID_CORE_LOADED;
+ }
++ else
++ debug_print_missing (BUILD_ID_MAIN_EXECUTABLE_FILENAME, build_id_filename);
+ }
- add_target_with_completer (&core_ops, filename_completer);
+ /* See gdbcore.h. */
+@@ -1189,4 +1201,11 @@ _initialize_corelow ()
+ maintenance_print_core_file_backed_mappings,
+ _("Print core file's file-backed mappings."),
+ &maintenanceprintlist);
+
+ add_setshow_boolean_cmd ("build-id-core-loads", class_files,
+ &build_id_core_loads, _("\
+ &setlist, &showlist);
}
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
-index 8bdafb0ba4..2f2cbd3dea 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
-@@ -19447,6 +19447,27 @@ information files.
+@@ -21074,6 +21074,27 @@ information files.
@end table
@cindex @code{.gnu_debuglink} sections
@cindex debug link sections
A debug link is a special section of the executable file named
-diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
-index 98e7d842f0..c8db955f2f 100644
---- a/gdb/dwarf2read.c
-+++ b/gdb/dwarf2read.c
-@@ -2907,7 +2907,7 @@ dwarf2_get_dwz_file (void)
+diff --git a/gdb/dwarf2/index-cache.c b/gdb/dwarf2/index-cache.c
+--- a/gdb/dwarf2/index-cache.c
++++ b/gdb/dwarf2/index-cache.c
+@@ -95,7 +95,7 @@ index_cache::store (dwarf2_per_objfile *per_objfile)
+ return;
+
+ /* Get build id of objfile. */
+- const bfd_build_id *build_id = build_id_bfd_get (obj->obfd);
++ const bfd_build_id *build_id = build_id_bfd_shdr_get (obj->obfd);
+ if (build_id == nullptr)
+ {
+ if (debug_index_cache)
+@@ -113,7 +113,8 @@ index_cache::store (dwarf2_per_objfile *per_objfile)
+
+ if (dwz != nullptr)
+ {
+- const bfd_build_id *dwz_build_id = build_id_bfd_get (dwz->dwz_bfd.get ());
++ const bfd_build_id *dwz_build_id
++ = build_id_bfd_shdr_get (dwz->dwz_bfd.get ());
+
+ if (dwz_build_id == nullptr)
+ {
+diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c
+--- a/gdb/dwarf2/read.c
++++ b/gdb/dwarf2/read.c
+@@ -2215,7 +2215,7 @@ dwarf2_get_dwz_file (dwarf2_per_bfd *per_bfd)
}
if (dwz_bfd == NULL)
- dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid);
-+ dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid, NULL, 1);
++ dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid, NULL);
+
+ if (dwz_bfd == nullptr)
+ {
+@@ -5977,7 +5977,7 @@ get_gdb_index_contents_from_section (objfile *obj, T *section_owner)
+ static gdb::array_view<const gdb_byte>
+ get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_bfd *dwarf2_per_bfd)
+ {
+- const bfd_build_id *build_id = build_id_bfd_get (obj->obfd);
++ const bfd_build_id *build_id = build_id_bfd_shdr_get (obj->obfd);
+ if (build_id == nullptr)
+ return {};
+
+@@ -5990,7 +5990,7 @@ get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_bfd *dwarf2_per_bfd)
+ static gdb::array_view<const gdb_byte>
+ get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz)
+ {
+- const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ());
++ const bfd_build_id *build_id = build_id_bfd_shdr_get (dwz->dwz_bfd.get ());
+ if (build_id == nullptr)
+ return {};
- if (dwz_bfd == NULL)
- error (_("could not find '.gnu_debugaltlink' file for %s"),
diff --git a/gdb/elfread.c b/gdb/elfread.c
-index 103b2144c3..fb32e03af5 100644
--- a/gdb/elfread.c
+++ b/gdb/elfread.c
-@@ -1259,8 +1259,9 @@ elf_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags)
+@@ -1298,7 +1298,9 @@ elf_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags)
&& objfile->separate_debug_objfile == NULL
&& objfile->separate_debug_objfile_backlink == NULL)
{
+- std::string debugfile = find_separate_debug_file_by_buildid (objfile);
+ gdb::unique_xmalloc_ptr<char> build_id_filename;
- gdb::unique_xmalloc_ptr<char> debugfile
-- (find_separate_debug_file_by_buildid (objfile));
-+ (find_separate_debug_file_by_buildid (objfile, &build_id_filename));
-
- if (debugfile == NULL)
- debugfile.reset (find_separate_debug_file_by_debuglink (objfile));
-@@ -1272,6 +1273,10 @@ elf_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags)
- symbol_file_add_separate (abfd.get (), debugfile.get (),
- symfile_flags, objfile);
++ std::string debugfile
++ = find_separate_debug_file_by_buildid (objfile, &build_id_filename);
+
+ if (debugfile.empty ())
+ debugfile = find_separate_debug_file_by_debuglink (objfile);
+@@ -1313,7 +1315,7 @@ elf_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags)
+ else
+ {
+ has_dwarf2 = false;
+- const struct bfd_build_id *build_id = build_id_bfd_get (objfile->obfd);
++ const struct bfd_build_id *build_id = build_id_bfd_shdr_get (objfile->obfd);
+
+ if (build_id != nullptr)
+ {
+@@ -1338,6 +1340,10 @@ elf_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags)
+ has_dwarf2 = true;
+ }
+ }
++ /* Check if any separate debug info has been extracted out. */
++ else if (bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink")
++ != NULL)
++ debug_print_missing (objfile_name (objfile), build_id_filename.get ());
+ }
}
-+ /* Check if any separate debug info has been extracted out. */
-+ else if (bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink")
-+ != NULL)
-+ debug_print_missing (objfile_name (objfile), build_id_filename.get ());
}
- }
+diff --git a/gdb/exec.c b/gdb/exec.c
+--- a/gdb/exec.c
++++ b/gdb/exec.c
+@@ -264,7 +264,7 @@ validate_exec_file (int from_tty)
+ reopen_exec_file ();
+ current_exec_file = get_exec_file (0);
+- const bfd_build_id *exec_file_build_id = build_id_bfd_get (exec_bfd);
++ const bfd_build_id *exec_file_build_id = build_id_bfd_shdr_get (exec_bfd);
+ if (exec_file_build_id != nullptr)
+ {
+ /* Prepend the target prefix, to force gdb_bfd_open to open the
+@@ -277,7 +277,7 @@ validate_exec_file (int from_tty)
+ if (abfd != nullptr)
+ {
+ const bfd_build_id *target_exec_file_build_id
+- = build_id_bfd_get (abfd.get ());
++ = build_id_bfd_shdr_get (abfd.get ());
+
+ if (target_exec_file_build_id != nullptr)
+ {
diff --git a/gdb/objfiles.h b/gdb/objfiles.h
-index 28e66eca36..5ab0e33fb6 100644
--- a/gdb/objfiles.h
+++ b/gdb/objfiles.h
-@@ -470,6 +470,10 @@ struct objfile
- htab_t static_links {};
+@@ -714,6 +714,10 @@ struct objfile
+ bool skip_jit_symbol_lookup = false;
};
+/* This file was loaded according to the BUILD_ID_CORE_LOADS rules. */
+
+#define OBJF_BUILD_ID_CORE_LOADED static_cast<enum objfile_flag>(1 << 12)
+
- /* Declarations for functions defined in objfiles.c */
+ /* A deleter for objfile. */
- extern struct gdbarch *get_objfile_arch (const struct objfile *);
+ struct objfile_deleter
diff --git a/gdb/python/py-objfile.c b/gdb/python/py-objfile.c
-index c2b40ff535..112cbf6560 100644
--- a/gdb/python/py-objfile.c
+++ b/gdb/python/py-objfile.c
-@@ -137,7 +137,7 @@ objfpy_get_build_id (PyObject *self, void *closure)
+@@ -132,7 +132,7 @@ objfpy_get_build_id (PyObject *self, void *closure)
- TRY
+ try
{
- build_id = build_id_bfd_get (objfile->obfd);
+ build_id = build_id_bfd_shdr_get (objfile->obfd);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
-@@ -544,7 +544,7 @@ objfpy_lookup_objfile_by_build_id (const char *build_id)
+@@ -600,7 +600,7 @@ objfpy_lookup_objfile_by_build_id (const char *build_id)
/* Don't return separate debug files. */
if (objfile->separate_debug_objfile_backlink != NULL)
continue;
continue;
if (objfpy_build_id_matches (obfd_build_id, build_id))
diff --git a/gdb/solib-svr4.c b/gdb/solib-svr4.c
-index 4973cc2f25..a3399ad8f7 100644
--- a/gdb/solib-svr4.c
+++ b/gdb/solib-svr4.c
@@ -45,6 +45,7 @@
static struct link_map_offsets *svr4_fetch_link_map_offsets (void);
static int svr4_have_link_map_offsets (void);
-@@ -1385,9 +1386,52 @@ svr4_read_so_list (CORE_ADDR lm, CORE_ADDR prev_lm,
+@@ -1338,9 +1339,51 @@ svr4_read_so_list (svr4_info *info, CORE_ADDR lm, CORE_ADDR prev_lm,
continue;
}
-- strncpy (newobj->so_name, buffer, SO_NAME_MAX_PATH_SIZE - 1);
+- strncpy (newobj->so_name, buffer.get (), SO_NAME_MAX_PATH_SIZE - 1);
- newobj->so_name[SO_NAME_MAX_PATH_SIZE - 1] = '\0';
- strcpy (newobj->so_original_name, newobj->so_name);
+ {
+ struct bfd_build_id *build_id;
+
-+ strncpy (newobj->so_original_name, buffer, SO_NAME_MAX_PATH_SIZE - 1);
++ strncpy (newobj->so_original_name, buffer.get (), SO_NAME_MAX_PATH_SIZE - 1);
+ newobj->so_original_name[SO_NAME_MAX_PATH_SIZE - 1] = '\0';
+ /* May get overwritten below. */
+ strcpy (newobj->so_name, newobj->so_original_name);
+
-+ build_id = build_id_addr_get (newobj->lm_info->l_ld);
++ build_id = build_id_addr_get (((lm_info_svr4 *) newobj->lm_info)->l_ld);
+ if (build_id != NULL)
+ {
+ char *name, *build_id_filename;
+ xfree (build_id);
+ }
+ }
-+
- xfree (buffer);
/* If this entry has no name, or its name matches the name
+ for the main executable, don't include it in the list. */
+diff --git a/gdb/source.c b/gdb/source.c
+--- a/gdb/source.c
++++ b/gdb/source.c
+@@ -1165,7 +1165,7 @@ open_source_file (struct symtab *s)
+ srcpath += s->filename;
+ }
+
+- const struct bfd_build_id *build_id = build_id_bfd_get (ofp->obfd);
++ const struct bfd_build_id *build_id = build_id_bfd_shdr_get (ofp->obfd);
+
+ /* Query debuginfod for the source file. */
+ if (build_id != nullptr && !srcpath.empty ())
diff --git a/gdb/symfile.h b/gdb/symfile.h
-index 7c3fd8240a..0d51f46d78 100644
--- a/gdb/symfile.h
+++ b/gdb/symfile.h
-@@ -543,6 +543,10 @@ void expand_symtabs_matching
+@@ -550,12 +550,18 @@ void expand_symtabs_matching
void map_symbol_filenames (symbol_filename_ftype *fun, void *data,
int need_fullname);
++
+ /* Target-agnostic function to load the sections of an executable into memory.
+
+ ARGS should be in the form "EXECUTABLE [OFFSET]", where OFFSET is an
+ optional offset to apply to each section. */
+ extern void generic_load (const char *args, int from_tty);
+
+/* build-id support. */
+extern struct bfd_build_id *build_id_addr_get (CORE_ADDR addr);
+extern void debug_print_missing (const char *binary, const char *debug);
++#define BUILD_ID_MAIN_EXECUTABLE_FILENAME _("the main executable file")
+
/* From dwarf2read.c */
/* Names for a dwarf2 debugging section. The field NORMAL is the normal
diff --git a/gdb/testsuite/gdb.base/corefile.exp b/gdb/testsuite/gdb.base/corefile.exp
-index 63a7fa8e5b..8a4fab77df 100644
--- a/gdb/testsuite/gdb.base/corefile.exp
+++ b/gdb/testsuite/gdb.base/corefile.exp
-@@ -311,3 +311,33 @@ gdb_test_multiple "core-file $corefile" $test {
+@@ -343,3 +343,33 @@ gdb_test_multiple "core-file $corefile" $test {
pass $test
}
}
+ gdb_test "info files" "Local exec file:\r\n\[ \t\]*`[string_to_regexp $debugdir/$buildid]', file type .*"
+ pass $wholetest
+}
+diff --git a/gdb/testsuite/gdb.base/gdbinit-history.exp b/gdb/testsuite/gdb.base/gdbinit-history.exp
+--- a/gdb/testsuite/gdb.base/gdbinit-history.exp
++++ b/gdb/testsuite/gdb.base/gdbinit-history.exp
+@@ -181,7 +181,8 @@ proc test_empty_history_filename { } {
+ global env
+ global gdb_prompt
+
+- set common_history [list "set height 0" "set width 0"]
++ set common_history [list "set height 0" "set width 0" \
++ "set build-id-verbose 0"]
+
+ set test_dir [standard_output_file history_test]
+ remote_exec host "mkdir -p $test_dir"
diff --git a/gdb/testsuite/gdb.base/new-ui-pending-input.exp b/gdb/testsuite/gdb.base/new-ui-pending-input.exp
-index a6dc14e3c9..54a10df155 100644
--- a/gdb/testsuite/gdb.base/new-ui-pending-input.exp
+++ b/gdb/testsuite/gdb.base/new-ui-pending-input.exp
@@ -62,6 +62,7 @@ proc test_command_line_new_ui_pending_input {} {
append options " -ex \"b $bpline\""
append options " -ex \"run\""
diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
-index 7702d9c238..a165bf0938 100644
--- a/gdb/testsuite/lib/gdb.exp
+++ b/gdb/testsuite/lib/gdb.exp
-@@ -1694,6 +1694,16 @@ proc default_gdb_start { } {
- warning "Couldn't set the width to 0."
+@@ -2011,6 +2011,17 @@ proc default_gdb_start { } {
}
}
+
+ # Turn off the missing warnings as the testsuite does not expect it.
+ send_gdb "set build-id-verbose 0\n"
+ gdb_expect 10 {
+ warning "Could not disable the missing debug infos warnings.."
+ }
+ }
++
+ gdb_debug_init
return 0
}
-
diff --git a/gdb/testsuite/lib/mi-support.exp b/gdb/testsuite/lib/mi-support.exp
-index 2846da74e4..004c3e6c1c 100644
--- a/gdb/testsuite/lib/mi-support.exp
+++ b/gdb/testsuite/lib/mi-support.exp
-@@ -309,6 +309,16 @@ proc default_mi_gdb_start { args } {
+@@ -308,6 +308,16 @@ proc default_mi_gdb_start { args } {
warning "Couldn't set the width to 0."
}
}
if { $separate_inferior_pty } {
mi_create_inferior_pty
---
-2.14.3
-
projects / packages / gdb.git / blobdiff