ld/

2009-01-16  H.J. Lu  <hongjiu.lu@intel.com>

	* lexsup.c (option_values): Add OPTION_TTEXT_SEGMENT.
	(ld_options): Add -Ttext-segment.
	(parse_args): Handle OPTION_TTEXT_SEGMENT.

	* ld.texinfo: Document -Ttext-segment.

	* NEWS: Mention -Ttext-segment.

	* scripttempl/elf.sc (TEXT_START_ADDR): Use SEGMENT_START.
	(SHLIB_TEXT_START_ADDR): Likewise.

ld/testsuite/

2009-01-16  H.J. Lu  <hongjiu.lu@intel.com>

	* ld-elf/textaddr1.d: New.
	* ld-elf/textaddr2.d: Likewise.

diff --git a/ld/ChangeLog b/ld/ChangeLog
index c9069cf..a73efc5 100644 (file)
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,16 @@
+2009-01-16  H.J. Lu  <hongjiu.lu@intel.com>
+
+       * lexsup.c (option_values): Add OPTION_TTEXT_SEGMENT.
+       (ld_options): Add -Ttext-segment.
+       (parse_args): Handle OPTION_TTEXT_SEGMENT.
+
+       * ld.texinfo: Document -Ttext-segment.
+
+       * NEWS: Mention -Ttext-segment.
+
+       * scripttempl/elf.sc (TEXT_START_ADDR): Use SEGMENT_START.
+       (SHLIB_TEXT_START_ADDR): Likewise.
+
 2009-01-13  Alan Modra  <amodra@bigpond.net.au>
 
        * emultempl/spu_icache.o_c: Regenerate.

diff --git a/ld/NEWS b/ld/NEWS
index 9e56775..790cab3 100644 (file)
--- a/ld/NEWS
+++ b/ld/NEWS
@@ -1,5 +1,8 @@
 -*- text -*-
 
+* Add a new command line option, -Ttext-segment ADDR, for ELF targets
+  to set the address of the first byte of the text segment.
+
 * Add new option --use-nul-prefixed-import-tables to ld for PE targets to
   allow fallback to old import table generation with null element prefix.
 

diff --git a/ld/ld.texinfo b/ld/ld.texinfo
index 3f16546..3543505 100644 (file)
--- a/ld/ld.texinfo
+++ b/ld/ld.texinfo
@@ -1723,6 +1723,12 @@ sign (``@key{=}''), and @var{org}.
 Same as --section-start, with @code{.bss}, @code{.data} or
 @code{.text} as the @var{sectionname}.
 
+@kindex -Ttext-segment @var{org}
+@itemx -Ttext-segment @var{org}
+@cindex text segment origin, cmd line
+When creating an ELF executable or shared object, it will set the address
+of the first byte of the text segment.
+
 @kindex --unresolved-symbols
 @item --unresolved-symbols=@var{method}
 Determine how to handle unresolved symbols.  There are four possible

diff --git a/ld/lexsup.c b/ld/lexsup.c
index 60a8167..f9e6b1f 100644 (file)
--- a/ld/lexsup.c
+++ b/ld/lexsup.c
@@ -103,6 +103,7 @@ enum option_values
   OPTION_TBSS,
   OPTION_TDATA,
   OPTION_TTEXT,
+  OPTION_TTEXT_SEGMENT,
   OPTION_TRADITIONAL_FORMAT,
   OPTION_UR,
   OPTION_VERBOSE,
@@ -512,6 +513,8 @@ static const struct ld_option ld_options[] =
     '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
   { {"Ttext", required_argument, NULL, OPTION_TTEXT},
     '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
+  { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT},
+    '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH },
   { {"unresolved-symbols=<method>", required_argument, NULL,
      OPTION_UNRESOLVED_SYMBOLS},
     '\0', NULL, N_("How to handle unresolved symbols.  <method> is:\n"
@@ -1231,6 +1234,9 @@ parse_args (unsigned argc, char **argv)
        case OPTION_TTEXT:
          set_segment_start (".text", optarg);
          break;
+       case OPTION_TTEXT_SEGMENT:
+         set_segment_start (".text-segment", optarg);
+         break;
        case OPTION_TRADITIONAL_FORMAT:
          link_info.traditional_format = TRUE;
          break;

diff --git a/ld/scripttempl/elf.sc b/ld/scripttempl/elf.sc
index bb8c808..123a989 100644 (file)
--- a/ld/scripttempl/elf.sc
+++ b/ld/scripttempl/elf.sc
@@ -242,6 +242,9 @@ STACK="  .stack        ${RELOCATING-0}${RELOCATING+${STACK_ADDR}} :
     *(.stack)
   }"
 
+TEXT_START_ADDR="SEGMENT_START(\"text-segment\", ${TEXT_START_ADDR})"
+SHLIB_TEXT_START_ADDR="SEGMENT_START(\"text-segment\", ${SHLIB_TEXT_START_ADDR:-0})"
+
 # if this is for an embedded system, don't add SIZEOF_HEADERS.
 if [ -z "$EMBEDDED" ]; then
    test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR} + SIZEOF_HEADERS"
@@ -267,8 +270,8 @@ SECTIONS
 {
   /* Read-only sections, merged into text segment: */
   ${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+PROVIDE (__executable_start = ${TEXT_START_ADDR}); . = ${TEXT_BASE_ADDRESS};}}}
-  ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR:-0} + SIZEOF_HEADERS;}}
-  ${CREATE_PIE+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR:-0} + SIZEOF_HEADERS;}}
+  ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR} + SIZEOF_HEADERS;}}
+  ${CREATE_PIE+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR} + SIZEOF_HEADERS;}}
   ${INITIAL_READONLY_SECTIONS}
   .note.gnu.build-id : { *(.note.gnu.build-id) }
 EOF

diff --git a/ld/testsuite/ChangeLog b/ld/testsuite/ChangeLog
index fe0d802..128e5e1 100644 (file)
--- a/ld/testsuite/ChangeLog
+++ b/ld/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2009-01-16  H.J. Lu  <hongjiu.lu@intel.com>
+
+       * ld-elf/textaddr1.d: New.
+       * ld-elf/textaddr2.d: Likewise.
+
 2009-01-14  H.J. Lu  <hongjiu.lu@intel.com>
 
        PR ld/9727

diff --git a/ld/testsuite/ld-elf/textaddr1.d b/ld/testsuite/ld-elf/textaddr1.d
new file mode 100644 (file)
index 0000000..f7a3ad9
--- /dev/null
+++ b/ld/testsuite/ld-elf/textaddr1.d
@@ -0,0 +1,8 @@
+#source: maxpage1.s
+#ld: -Ttext-segment 0x7000000 -z max-page-size=0x200000
+#readelf: -l --wide
+#target: *-*-linux-gnu
+
+#...
+  LOAD +0x0+ 0x0*7000000 0x0*7000000 0x0*[0-9a-f][0-9a-f][0-9a-f] 0x0*[0-9a-f][0-9a-f][0-9a-f] R E 0x200000
+#pass

diff --git a/ld/testsuite/ld-elf/textaddr2.d b/ld/testsuite/ld-elf/textaddr2.d
new file mode 100644 (file)
index 0000000..9d1b0e5
--- /dev/null
+++ b/ld/testsuite/ld-elf/textaddr2.d
@@ -0,0 +1,8 @@
+#source: maxpage1.s
+#ld: -shared -Ttext-segment 0x7000000 -z max-page-size=0x200000
+#readelf: -l --wide
+#target: *-*-linux-gnu
+
+#...
+  LOAD +0x0+ 0x0*7000000 0x0*7000000 0x0*[0-9a-f][0-9a-f][0-9a-f] 0x0*[0-9a-f][0-9a-f][0-9a-f] R E 0x200000
+#pass