#include "ldexp.h"
#include "ldlang.h"
#include "ldfile.h"
+#include "../bfd/plugin.h"
#include "plugin.h"
#include "plugin-api.h"
#include "elf-bfd.h"
view_buffer_t view_buffer;
char *name;
int fd;
+ bfd_boolean use_mmap;
off_t offset;
off_t filesize;
} plugin_input_file_t;
its own newly-added input files and libs to claim. */
bfd_boolean no_more_claiming = FALSE;
+#if HAVE_MMAP && HAVE_GETPAGESIZE
+/* Page size used by mmap. */
+static off_t plugin_pagesize;
+#endif
+
/* List of tags to set in the constant leading part of the tv array. */
static const enum ld_plugin_tag tv_header_tags[] =
{
struct bfd_link_hash_entry *,
bfd *, asection *, bfd_vma, flagword);
+static const bfd_target * plugin_object_p (bfd *);
+
#if !defined (HAVE_DLFCN_H) && defined (HAVE_WINDOWS_H)
#define RTLD_NOW 0 /* Dummy value. */
bfd_use_reserved_id = 1;
abfd = bfd_create (concat (name, IRONLY_SUFFIX, (const char *) NULL),
- srctemplate);
+ link_info.output_bfd);
if (abfd != NULL)
{
abfd->flags |= BFD_LINKER_CREATED | BFD_PLUGIN;
- bfd_set_arch_info (abfd, bfd_get_arch_info (srctemplate));
- bfd_set_gp_size (abfd, bfd_get_gp_size (srctemplate));
- if (bfd_make_writable (abfd)
- && bfd_copy_private_bfd_data (srctemplate, abfd))
+ if (!bfd_make_writable (abfd))
+ goto report_error;
+ if (! bfd_plugin_target_p (srctemplate->xvec))
+ {
+ bfd_set_arch_info (abfd, bfd_get_arch_info (srctemplate));
+ bfd_set_gp_size (abfd, bfd_get_gp_size (srctemplate));
+ if (!bfd_copy_private_bfd_data (srctemplate, abfd))
+ goto report_error;
+ }
{
flagword flags;
return abfd;
}
}
+report_error:
einfo (_("could not create dummy IR bfd: %F%E\n"));
return NULL;
}
plugin_input_file_t *input = (plugin_input_file_t *) handle;
char *buffer;
size_t size = input->filesize;
+ off_t offset = input->offset;
+#if HAVE_MMAP && HAVE_GETPAGESIZE
+ off_t bias;
+#endif
ASSERT (called_plugin);
/* Check the cached view buffer. */
if (input->view_buffer.addr != NULL
&& input->view_buffer.filesize == size
- && input->view_buffer.offset == input->offset)
+ && input->view_buffer.offset == offset)
{
*viewp = input->view_buffer.addr;
return LDPS_OK;
}
input->view_buffer.filesize = size;
- input->view_buffer.offset = input->offset;
+ input->view_buffer.offset = offset;
#if HAVE_MMAP
- buffer = mmap (NULL, size, PROT_READ, MAP_PRIVATE, input->fd,
- input->offset);
- if (buffer == MAP_FAILED)
+# if HAVE_GETPAGESIZE
+ bias = offset % plugin_pagesize;
+ offset -= bias;
+ size += bias;
+# endif
+ buffer = mmap (NULL, size, PROT_READ, MAP_PRIVATE, input->fd, offset);
+ if (buffer != MAP_FAILED)
+ {
+ input->use_mmap = TRUE;
+# if HAVE_GETPAGESIZE
+ buffer += bias;
+# endif
+ }
+ else
#endif
{
char *p;
- if (lseek (input->fd, input->offset, SEEK_SET) < 0)
+ input->use_mmap = FALSE;
+
+ if (lseek (input->fd, offset, SEEK_SET) < 0)
return LDPS_ERR;
buffer = bfd_alloc (input->abfd, size);
static enum ld_plugin_status
add_input_file (const char *pathname)
{
+ lang_input_statement_type *is;
+
ASSERT (called_plugin);
- if (!lang_add_input_file (xstrdup (pathname), lang_input_file_is_file_enum,
- NULL))
+ is = lang_add_input_file (xstrdup (pathname), lang_input_file_is_file_enum,
+ NULL);
+ if (!is)
return LDPS_ERR;
+ is->flags.lto_output = 1;
return LDPS_OK;
}
static enum ld_plugin_status
add_input_library (const char *pathname)
{
+ lang_input_statement_type *is;
+
ASSERT (called_plugin);
- if (!lang_add_input_file (xstrdup (pathname), lang_input_file_is_l_enum,
- NULL))
+ is = lang_add_input_file (xstrdup (pathname), lang_input_file_is_l_enum,
+ NULL);
+ if (!is)
return LDPS_ERR;
+ is->flags.lto_output = 1;
return LDPS_OK;
}
putchar ('\n');
break;
case LDPL_WARNING:
- vfinfo (stdout, format, args, TRUE);
- putchar ('\n');
+ {
+ char *newfmt = ACONCAT (("%P: warning: ", format, "\n",
+ (const char *) NULL));
+ vfinfo (stdout, newfmt, args, TRUE);
+ }
break;
case LDPL_FATAL:
case LDPL_ERROR:
default:
{
- char *newfmt = ACONCAT ((level == LDPL_FATAL ? "%P%F: " : "%P%X: ",
- format, "\n", (const char *) NULL));
+ char *newfmt = ACONCAT ((level == LDPL_FATAL ? "%P%F" : "%P%X",
+ ": error: ", format, "\n",
+ (const char *) NULL));
fflush (stdout);
vfinfo (stderr, newfmt, args, TRUE);
fflush (stderr);
link_info.notice_all = TRUE;
link_info.lto_plugin_active = TRUE;
link_info.callbacks = &plugin_callbacks;
+
+ register_ld_plugin_object_p (plugin_object_p);
+
+#if HAVE_MMAP && HAVE_GETPAGESIZE
+ plugin_pagesize = getpagesize ();
+#endif
}
/* Call 'claim file' hook for all plugins. */
return copy;
}
-void
-plugin_maybe_claim (lang_input_statement_type *entry)
+static const bfd_target *
+plugin_object_p (bfd *ibfd)
{
- int claimed = 0;
+ int claimed;
plugin_input_file_t *input;
off_t offset, filesize;
struct ld_plugin_input_file file;
bfd *abfd;
- bfd *ibfd = entry->the_bfd;
- bfd_boolean inarchive = bfd_my_archive (ibfd) != NULL;
- const char *name
- = inarchive ? bfd_my_archive (ibfd)->filename : ibfd->filename;
- int fd = open (name, O_RDONLY | O_BINARY);
+ bfd_boolean inarchive;
+ const char *name;
+ int fd;
+
+ /* Don't try the dummy object file. */
+ if ((ibfd->flags & BFD_PLUGIN) != 0)
+ return NULL;
+
+ if (ibfd->plugin_format != bfd_plugin_uknown)
+ {
+ if (ibfd->plugin_format == bfd_plugin_yes)
+ return ibfd->plugin_dummy_bfd->xvec;
+ else
+ return NULL;
+ }
+
+ inarchive = bfd_my_archive (ibfd) != NULL;
+ name = inarchive ? bfd_my_archive (ibfd)->filename : ibfd->filename;
+ fd = open (name, O_RDONLY | O_BINARY);
if (fd < 0)
- return;
+ return NULL;
/* We create a dummy BFD, initially empty, to house whatever symbols
the plugin may want to add. */
input->view_buffer.filesize = 0;
input->view_buffer.offset = 0;
input->fd = fd;
+ input->use_mmap = FALSE;
input->offset = offset;
input->filesize = filesize;
input->name = plugin_strdup (abfd, ibfd->filename);
+ claimed = 0;
+
if (plugin_call_claim_file (&file, &claimed))
einfo (_("%P%F: %s: plugin reported error claiming file\n"),
plugin_error_plugin ());
- if (input->fd != -1 && ibfd->format == bfd_object)
+ if (input->fd != -1 && ! bfd_plugin_target_p (ibfd->xvec))
{
- /* FIXME: fd belongs to us, not the plugin. IR for GCC plugin,
- which doesn't need fd after plugin_call_claim_file, is
- stored in bfd_object file. Since GCC plugin before GCC 5
- doesn't call release_input_file, we close it here. IR for
- LLVM plugin, which needs fd after plugin_call_claim_file and
- calls release_input_file after it is done, is stored in
- non-bfd_object file. This scheme doesn't work when a plugin
- needs fd and its IR is stored in bfd_object file. */
+ /* FIXME: fd belongs to us, not the plugin. GCC plugin, which
+ doesn't need fd after plugin_call_claim_file, doesn't use
+ BFD plugin target vector. Since GCC plugin doesn't call
+ release_input_file, we close it here. LLVM plugin, which
+ needs fd after plugin_call_claim_file and calls
+ release_input_file after it is done, uses BFD plugin target
+ vector. This scheme doesn't work when a plugin needs fd and
+ doesn't use BFD plugin target vector neither. */
close (fd);
input->fd = -1;
}
if (claimed)
{
- /* Discard the real file's BFD and substitute the dummy one. */
-
- /* BFD archive handling caches elements so we can't call
- bfd_close for archives. */
- if (!inarchive)
- bfd_close (ibfd);
+ ibfd->plugin_format = bfd_plugin_yes;
+ ibfd->plugin_dummy_bfd = abfd;
bfd_make_readable (abfd);
- entry->the_bfd = abfd;
- entry->flags.claimed = TRUE;
+ return abfd->xvec;
}
else
{
+#if HAVE_MMAP
+ if (input->use_mmap)
+ {
+ /* If plugin didn't claim the file, unmap the buffer. */
+ char *addr = input->view_buffer.addr;
+ off_t size = input->view_buffer.filesize;
+# if HAVE_GETPAGESIZE
+ off_t bias = input->view_buffer.offset % plugin_pagesize;
+ size += bias;
+ addr -= bias;
+# endif
+ munmap (addr, size);
+ }
+#endif
+
/* If plugin didn't claim the file, we don't need the dummy bfd.
Can't avoid speculatively creating it, alas. */
+ ibfd->plugin_format = bfd_plugin_no;
bfd_close_all_done (abfd);
- entry->flags.claimed = FALSE;
+ return NULL;
+ }
+}
+
+void
+plugin_maybe_claim (lang_input_statement_type *entry)
+{
+ if (plugin_object_p (entry->the_bfd))
+ {
+ bfd *abfd = entry->the_bfd->plugin_dummy_bfd;
+
+ /* Discard the real file's BFD and substitute the dummy one. */
+
+ /* BFD archive handling caches elements so we can't call
+ bfd_close for archives. */
+ if (entry->the_bfd->my_archive == NULL)
+ bfd_close (entry->the_bfd);
+ entry->the_bfd = abfd;
+ entry->flags.claimed = 1;
}
}
projects / deliverable / binutils-gdb.git / blobdiff