aboutsummaryrefslogtreecommitdiff
path: root/ld
diff options
context:
space:
mode:
Diffstat (limited to 'ld')
-rw-r--r--ld/ChangeLog8
-rw-r--r--ld/emultempl/pe.em21
-rw-r--r--ld/emultempl/pep.em12
-rw-r--r--ld/ld.texinfo5
-rw-r--r--ld/pe-dll.c8
5 files changed, 41 insertions, 13 deletions
diff --git a/ld/ChangeLog b/ld/ChangeLog
index e98129d..4582adb 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,11 @@
+2013-11-22 Cory Fields <cory@coryfields.com>
+
+ * pe-dll.c (fill_edata): Only use a real timestamp if
+ --insert-timestamp was used.
+ * emultempl/pe.em: Add the --insert-timestamp option.
+ * emultempl/pep.em: Likewise for 64bit.
+ * ld.texinfo: Document the --insert-timestamp option.
+
2013-11-22 Senthil Kumar Selvaraj <senthil_kumar.selvaraj@atmel.com>
* scripttempl/avr.sc: Set .data section's LMA to next available
diff --git a/ld/emultempl/pe.em b/ld/emultempl/pe.em
index 4df7753..5d6da9e 100644
--- a/ld/emultempl/pe.em
+++ b/ld/emultempl/pe.em
@@ -130,6 +130,7 @@ static int support_old_code = 0;
static char * thumb_entry_symbol = NULL;
static lang_assignment_statement_type *image_base_statement = 0;
static unsigned short pe_dll_characteristics = 0;
+static bfd_boolean insert_timestamp = FALSE;
#ifdef DLL_SUPPORT
static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable. */
@@ -239,8 +240,7 @@ fragment <<EOF
(OPTION_EXCLUDE_LIBS + 1)
#define OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC \
(OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC + 1)
-#define OPTION_LARGE_ADDRESS_AWARE \
- (OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC + 1)
+#define OPTION_LARGE_ADDRESS_AWARE (OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC + 1)
#define OPTION_DISABLE_LARGE_ADDRESS_AWARE \
(OPTION_LARGE_ADDRESS_AWARE + 1)
#define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 \
@@ -251,15 +251,13 @@ fragment <<EOF
(OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 + 1)
#define OPTION_USE_NUL_PREFIXED_IMPORT_TABLES \
(OPTION_EXCLUDE_MODULES_FOR_IMPLIB + 1)
-#define OPTION_NO_LEADING_UNDERSCORE \
- (OPTION_USE_NUL_PREFIXED_IMPORT_TABLES + 1)
-#define OPTION_LEADING_UNDERSCORE \
- (OPTION_NO_LEADING_UNDERSCORE + 1)
+#define OPTION_NO_LEADING_UNDERSCORE (OPTION_USE_NUL_PREFIXED_IMPORT_TABLES + 1)
+#define OPTION_LEADING_UNDERSCORE (OPTION_NO_LEADING_UNDERSCORE + 1)
#define OPTION_ENABLE_LONG_SECTION_NAMES \
(OPTION_LEADING_UNDERSCORE + 1)
#define OPTION_DISABLE_LONG_SECTION_NAMES \
(OPTION_ENABLE_LONG_SECTION_NAMES + 1)
-/* DLLCharacteristics flags */
+/* DLLCharacteristics flags. */
#define OPTION_DYNAMIC_BASE (OPTION_DISABLE_LONG_SECTION_NAMES + 1)
#define OPTION_FORCE_INTEGRITY (OPTION_DYNAMIC_BASE + 1)
#define OPTION_NX_COMPAT (OPTION_FORCE_INTEGRITY + 1)
@@ -268,6 +266,8 @@ fragment <<EOF
#define OPTION_NO_BIND (OPTION_NO_SEH + 1)
#define OPTION_WDM_DRIVER (OPTION_NO_BIND + 1)
#define OPTION_TERMINAL_SERVER_AWARE (OPTION_WDM_DRIVER + 1)
+/* Determinism. */
+#define OPTION_INSERT_TIMESTAMP (OPTION_TERMINAL_SERVER_AWARE + 1)
static void
gld${EMULATION_NAME}_add_options
@@ -301,6 +301,7 @@ gld${EMULATION_NAME}_add_options
OPTION_USE_NUL_PREFIXED_IMPORT_TABLES},
{"no-leading-underscore", no_argument, NULL, OPTION_NO_LEADING_UNDERSCORE},
{"leading-underscore", no_argument, NULL, OPTION_LEADING_UNDERSCORE},
+ {"insert-timestamp", no_argument, NULL, OPTION_INSERT_TIMESTAMP},
#ifdef DLL_SUPPORT
/* getopt allows abbreviations, so we do this to stop it
from treating -o as an abbreviation for this option. */
@@ -438,6 +439,8 @@ gld_${EMULATION_NAME}_list_options (FILE *file)
fprintf (file, _(" --support-old-code Support interworking with old code\n"));
fprintf (file, _(" --[no-]leading-underscore Set explicit symbol underscore prefix mode\n"));
fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n"));
+ fprintf (file, _(" --insert-timestamp Use a real timestamp rather than zero.\n"));
+ fprintf (file, _(" This makes binaries non-deterministic\n"));
#ifdef DLL_SUPPORT
fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
@@ -754,6 +757,9 @@ gld${EMULATION_NAME}_handle_option (int optc)
case OPTION_LEADING_UNDERSCORE:
pe_leading_underscore = 1;
break;
+ case OPTION_INSERT_TIMESTAMP:
+ insert_timestamp = TRUE;
+ break;
#ifdef DLL_SUPPORT
case OPTION_OUT_DEF:
pe_out_def_filename = xstrdup (optarg);
@@ -1255,6 +1261,7 @@ gld_${EMULATION_NAME}_after_open (void)
pe_data (link_info.output_bfd)->pe_opthdr = pe;
pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
pe_data (link_info.output_bfd)->real_flags |= real_flags;
+ pe_data (link_info.output_bfd)->insert_timestamp = insert_timestamp;
/* At this point we must decide whether to use long section names
in the output or not. If the user hasn't explicitly specified
diff --git a/ld/emultempl/pep.em b/ld/emultempl/pep.em
index 3e8b65e..b738800 100644
--- a/ld/emultempl/pep.em
+++ b/ld/emultempl/pep.em
@@ -18,8 +18,7 @@ esac
rm -f e${EMULATION_NAME}.c
(echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-)
fragment <<EOF
-/* Copyright 2006, 2007, 2008, 2009, 2010, 2011, 2012
- Free Software Foundation, Inc.
+/* Copyright 2006-2013 Free Software Foundation, Inc.
Written by Kai Tietz, OneVision Software GmbH&CoKg.
This file is part of the GNU Binutils.
@@ -146,6 +145,7 @@ static flagword real_flags = IMAGE_FILE_LARGE_ADDRESS_AWARE;
static int support_old_code = 0;
static lang_assignment_statement_type *image_base_statement = 0;
static unsigned short pe_dll_characteristics = 0;
+static bfd_boolean insert_timestamp = FALSE;
#ifdef DLL_SUPPORT
static int pep_enable_stdcall_fixup = 1; /* 0=disable 1=enable (default). */
@@ -241,6 +241,7 @@ enum options
OPTION_NO_SEH,
OPTION_NO_BIND,
OPTION_WDM_DRIVER,
+ OPTION_INSERT_TIMESTAMP,
OPTION_TERMINAL_SERVER_AWARE
};
@@ -316,6 +317,7 @@ gld${EMULATION_NAME}_add_options
{"no-bind", no_argument, NULL, OPTION_NO_BIND},
{"wdmdriver", no_argument, NULL, OPTION_WDM_DRIVER},
{"tsaware", no_argument, NULL, OPTION_TERMINAL_SERVER_AWARE},
+ {"insert-timestamp", no_argument, NULL, OPTION_INSERT_TIMESTAMP},
{NULL, no_argument, NULL, 0}
};
@@ -402,6 +404,8 @@ gld_${EMULATION_NAME}_list_options (FILE *file)
fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
fprintf (file, _(" --support-old-code Support interworking with old code\n"));
fprintf (file, _(" --[no-]leading-underscore Set explicit symbol underscore prefix mode\n"));
+ fprintf (file, _(" --insert-timestamp Use a real timestamp rather than zero.\n"));
+ fprintf (file, _(" This makes binaries non-deterministic\n"));
#ifdef DLL_SUPPORT
fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
@@ -707,6 +711,9 @@ gld${EMULATION_NAME}_handle_option (int optc)
case OPTION_LEADING_UNDERSCORE:
pep_leading_underscore = 1;
break;
+ case OPTION_INSERT_TIMESTAMP:
+ insert_timestamp = TRUE;
+ break;
#ifdef DLL_SUPPORT
case OPTION_OUT_DEF:
pep_out_def_filename = xstrdup (optarg);
@@ -1219,6 +1226,7 @@ gld_${EMULATION_NAME}_after_open (void)
pe_data (link_info.output_bfd)->pe_opthdr = pep;
pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
pe_data (link_info.output_bfd)->real_flags |= real_flags;
+ pe_data (link_info.output_bfd)->insert_timestamp = insert_timestamp;
/* At this point we must decide whether to use long section names
in the output or not. If the user hasn't explicitly specified
diff --git a/ld/ld.texinfo b/ld/ld.texinfo
index e4788f6..c925ecb 100644
--- a/ld/ld.texinfo
+++ b/ld/ld.texinfo
@@ -2657,6 +2657,11 @@ The driver uses the MS Windows Driver Model.
@item --tsaware
The image is Terminal Server aware.
+@kindex --insert-timestamp
+@item --insert-timestamp
+Insert a real timestamp into the image, rather than the default value
+of zero. This will result in a slightly different results with each
+invocation, which could be helpful for distributing unique images.
@end table
@c man end
diff --git a/ld/pe-dll.c b/ld/pe-dll.c
index 7d5f90d..8777efb 100644
--- a/ld/pe-dll.c
+++ b/ld/pe-dll.c
@@ -1169,9 +1169,6 @@ fill_edata (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED)
unsigned char *enameptrs;
unsigned char *eordinals;
char *enamestr;
- time_t now;
-
- time (&now);
edata_d = xmalloc (edata_sz);
@@ -1186,7 +1183,10 @@ fill_edata (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED)
+ edata_s->output_section->vma - image_base)
memset (edata_d, 0, edata_sz);
- bfd_put_32 (abfd, now, edata_d + 4);
+
+ if (pe_data (abfd)->insert_timestamp)
+ H_PUT_32 (abfd, time (0), edata_d + 4);
+
if (pe_def_file->version_major != -1)
{
bfd_put_16 (abfd, pe_def_file->version_major, edata_d + 8);
generated by cgit v1.1 at 2024-12-13 17:55:46 +0000