bfd/

2012-04-03  Roland McGrath  <mcgrathr@google.com>

	* elf-nacl.c: New file.
	* elf-nacl.h: New file.
	* elf32-i386.c (elf_backend_modify_segment_map): Define for
	bfd_elf32_i386_nacl_vec.
	(elf_backend_modify_program_headers): Likewise.
	* elf64-x86-64.c (elf_backend_modify_segment_map): Define for
	bfd_elf64_x86_64_nacl_vec and bfd_elf32_x86_64_nacl_vec.
	(elf_backend_modify_program_headers): Likewise.
	* Makefile.am (BFD32_BACKENDS, BFD64_BACKENDS): Add elf-nacl.lo here.
	(BFD32_BACKENDS_CFILES, BFD64_BACKENDS_CFILES): Add elf-nacl.c here.
	* Makefile.in: Regenerated.
	* configure.in (bfd_elf64_x86_64_nacl_vec): Add elf-nacl.o to tb here.
	(bfd_elf32_x86_64_nacl_vec): Likewise.
	(bfd_elf64_x86_64_vec, bfd_elf32_x86_64_vec): Likewise.
	(bfd_elf64_x86_64_freebsd_vec, bfd_elf64_x86_64_sol2_vec): Likewise.
	(bfd_elf64_l1om_vec, bfd_elf64_l1om_freebsd_vec): Likewise.
	(bfd_elf64_k1om_vec, bfd_elf64_k1om_freebsd_vec): Likewise.
	(bfd_elf32_i386_nacl_vec): Likewise.
	(bfd_elf32_i386_sol2_vec, bfd_elf32_i386_freebsd_vec): Likewise.
	(bfd_elf32_i386_vxworks_vec, bfd_elf32_i386_vec): Likewise.
	* configure: Regenerated.

binutils/testsuite/
2012-04-03  Roland McGrath  <mcgrathr@google.com>

	* lib/binutils-common.exp (is_elf_format): Consider *-*-nacl* to
	be ELF too.

	* binutils-all/elfedit-4.d: Add "#as: --64" option.

	* binutils-all/i386/i386.exp: Accept nacl targets too.
	* binutils-all/x86-64/x86-64.exp: Likewise.

gas/testsuite/
2012-04-03  Roland McGrath  <mcgrathr@google.com>

	* gas/i386/k1om.d: Add not-target match for *-*-nacl*.
	* gas/i386/l1om.d: Likewise.

ld/
2012-04-03  Roland McGrath  <mcgrathr@google.com>

	* configure.tgt (i[3-7]86-*-nacl*, x86_64-*-nacl*): Handle them.
	* emulparams/elf_nacl.sh: New file.
	* emulparams/elf_i386_nacl.sh: New file.
	* emulparams/elf32_x86_64_nacl.sh: New file.
	* emulparams/elf_x86_64_nacl.sh: New file.
	* Makefile.am (ALL_EMULATION_SOURCES): Add eelf_i386_nacl.c here.
	(ALL_64_EMULATION_SOURCES): Add eelf32_x86_64_nacl.c and
	eelf_x86_64_nacl.c here.
	(eelf_i386_nacl.c, eelf32_x86_64_nacl.c, eelf_x86_64_nacl.c):
	New targets.
	* Makefile.in: Regenerated.

	* scripttempl/elf.sc: Handle SEPARATE_CODE cases.

ld/testsuite/
2012-04-03  Roland McGrath  <mcgrathr@google.com>

	* ld-x86-64/ilp32-4-nacl.d: New file.
	* ld-x86-64/x86-64.exp: Run it.

	* ld-discard/discard.exp: Accept nacl targets too.
	* ld-elf/binutils.exp: Likewise.
	* ld-elf/comm-data.exp: Likewise.
	* ld-elf/elf.exp: Likewise.
	* ld-elf/tls_common.exp: Likewise.
	* ld-elfvers/vers.exp: Likewise.
	* ld-elfvsb/elfvsb.exp: Likewise.
	* ld-elfweak/elfweak.exp: Likewise.
	* ld-gc/gc.exp: Likewise.
	* ld-ifunc/binutils.exp: Likewise.
	* ld-ifunc/ifunc.exp: Likewise.
	* ld-linkonce/linkonce.exp:Likewise.
	* ld-pie/pie.exp: Likewise.
	* ld-shared/shared.exp: Likewise.
	* ld-undefined/weak-undef.exp: Likewise.
	* ld-unique/unique.exp: Likewise.
	* ld-x86-64/dwarfreloc.exp: Likewise.
	* ld-x86-64/line.exp: Likewise.

	* lib/ld-lib.exp (slurp_options): Support global array
	options_regsub to apply substitutions to the contents
	of options lines read from the file.
	* ld-i386/emit-relocs.d: Renamed to ...
	* ld-i386/emit-relocs.rd: ... this.
	* ld-i386/i386.exp: Accept nacl targets too.
	For them, use options_regsub to replace elf_i386 with
	elf_i386_nacl in run_dump_test cases; apply the same
	substitution in $i386tests; replace foo.rd expectations
	files with foo-nacl.rd in $i386tests.
	(i386tests): Change emit-relocs.d to emit-relocs.rd here.
	* ld-i386/emit-relocs-nacl.rd: New file.
	* ld-i386/plt-nacl.pd: New file.
	* ld-i386/plt-pic-nacl.pd: New file.
	* ld-i386/tlsbin-nacl.rd: New file.
	* ld-i386/tlsbindesc-nacl.rd: New file.
	* ld-i386/tlsdesc-nacl.rd: New file.
	* ld-i386/tlsgdesc-nacl.rd: New file.
	* ld-i386/tlsnopic-nacl.rd: New file.
	* ld-i386/tlspic-nacl.rd: New file.
	* ld-x86-64/x86-64.exp: Accept nacl targets too.
	For them, use options_regsub to replace elf_x86_64 with
	elf_x86_64_nacl in run_dump_test cases; apply the same
	substitution in $x86_64tests; replace foo.rd expectations
	files with foo-nacl.rd in $x86_64tests.
	Add explicit -melf_x86_64 to ld options in tests that need it,
	in case the default emulation is x32 (as it is for x86_64-nacl).
	* ld/testsuite/ld-x86-64/plt-nacl.pd: New file.
	* ld/testsuite/ld-x86-64/split-by-file-nacl.rd: New file.
	* ld/testsuite/ld-x86-64/tlsbin-nacl.rd: New file.
	* ld/testsuite/ld-x86-64/tlsbindesc-nacl.rd: New file.
	* ld/testsuite/ld-x86-64/tlsdesc-nacl.pd: New file.
	* ld/testsuite/ld-x86-64/tlsdesc-nacl.rd: New file.
	* ld/testsuite/ld-x86-64/tlsgdesc-nacl.rd: New file.
	* ld/testsuite/ld-x86-64/tlspic-nacl.rd: New file.

	* ld-i386/hidden2.d: Loosen regexps to match any file format variant,
	and not to depend on exact addresses, displacements, etc. where
	they are irrelevant.
	* ld-i386/pcrel16.d: Likewise.
	* ld-i386/pcrel16abs.d: Likewise.
	* ld-i386/pr12718.d: Likewise.
	* ld-i386/pr12921.d: Likewise.
	* ld-i386/reloc.d: Likewise.
	* ld-i386/tlsbin.dd: Likewise.
	* ld-i386/tlsbin.sd: Likewise.
	* ld-i386/tlsbin.td: Likewise.
	* ld-i386/tlsbindesc.dd: Likewise.
	* ld-i386/tlsbindesc.sd: Likewise.
	* ld-i386/tlsbindesc.td: Likewise.
	* ld-i386/tlsdesc.dd: Likewise.
	* ld-i386/tlsdesc.sd: Likewise.
	* ld-i386/tlsdesc.td: Likewise.
	* ld-i386/tlsg.sd: Likewise.
	* ld-i386/tlsgdesc.dd: Likewise.
	* ld-i386/tlsindntpoff.dd: Likewise.
	* ld-i386/tlsnopic.dd: Likewise.
	* ld-i386/tlsnopic.sd: Likewise.
	* ld-i386/tlspic.dd: Likewise.
	* ld-i386/tlspic.sd: Likewise.
	* ld-i386/tlspic.td: Likewise.
	* ld-i386/tlspie2.d: Likewise.
	* ld-x86-64/hidden2.d: Likewise.
	* ld-x86-64/pcrel16.d: Likewise.
	* ld-x86-64/pr12718.d: Likewise.
	* ld-x86-64/pr12921.d: Likewise.
	* ld-x86-64/protected3.d: Likewise.
	* ld-x86-64/tlsbin.dd: Likewise.
	* ld-x86-64/tlsbin.sd: Likewise.
	* ld-x86-64/tlsbin.td: Likewise.
	* ld-x86-64/tlsbindesc.dd: Likewise.
	* ld-x86-64/tlsbindesc.sd: Likewise.
	* ld-x86-64/tlsbindesc.td: Likewise.
	* ld-x86-64/tlsdesc.dd: Likewise.
	* ld-x86-64/tlsdesc.sd: Likewise.
	* ld-x86-64/tlsdesc.td: Likewise.
	* ld-x86-64/tlsg.sd: Likewise.
	* ld-x86-64/tlsgd5.dd: Likewise.
	* ld-x86-64/tlsgd6.dd: Likewise.
	* ld-x86-64/tlsgdesc.dd: Likewise.
	* ld-x86-64/tlspic.dd: Likewise.
	* ld-x86-64/tlspic.sd: Likewise.
	* ld-x86-64/tlspic.td: Likewise.

	* ld-x86-64/ilp32-8.d: Match any file format variant.
	Use a -Ttext and adjust expected results, to handle variant layouts.
	* ld-x86-64/ilp32-9.d: Likewise.

	* ld-i386/alloc.t: Remove superfluous OUTPUT_FORMAT statement.
	* ld-i386/pr12627.t: Likewise.

	* ld-x86-64/abs-l1om.d: Add target: constraint.
	* ld-x86-64/protected2-l1om.d: Likewise.
	* ld-x86-64/protected3-l1om.d: Likewise.
	* ld-x86-64/ilp32-4.d: Likewise.

	* ld-x86-64/plt.s: New file.
	* ld-x86-64/pltlib.s: New file.
	* ld-x86-64/plt.pd: New file.
	* ld-x86-64/x86-64.exp (x86_64tests): Add them.

	* ld-i386/plt.s: New file.
	* ld-i386/pltlib.s: New file.
	* ld-i386/plt.pd: New file.
	* ld-i386/plt-pic.s: New file.
	* ld-i386/plt-pic.pd: New file.
	* ld-i386/i386.exp (i386tests): Add them.

1 files changed, 46 insertions, 23 deletions

diff --git a/ld/scripttempl/elf.sc b/ld/scripttempl/elf.sc
index 7994b5f..5796b0a 100644
--- a/ld/scripttempl/elf.sc
+++ b/ld/scripttempl/elf.sc
@@ -40,7 +40,7 @@
 #	NO_RELA_RELOCS - Don't include .rela.* sections in script
 #	NON_ALLOC_DYN - Place dynamic sections after data segment.
 #	TEXT_DYNAMIC - .dynamic in text segment, not data segment.
-#	EMBEDDED - whether this is for an embedded system. 
+#	EMBEDDED - whether this is for an embedded system.
 #	SHLIB_TEXT_START_ADDR - if set, add to SIZEOF_HEADERS to set
 #		start address of shared library.
 #	INPUT_FILES - INPUT command of files to always include
@@ -53,6 +53,9 @@
 #	OTHER_SYMBOLS - symbols to place right at the end of the script.
 #	ETEXT_NAME - name of a symbol for the end of the text section,
 #		normally etext.
+#	SEPARATE_CODE - if set, .text and similar sections containing
+#		actual machine instructions must be in wholly disjoint
+#		pages from any other data, including headers
 #	SEPARATE_GOTPLT - if set, .got.plt should be separate output section,
 #		so that .got can be in the RELRO area.  It should be set to
 #		the number of bytes in the beginning of .got.plt which can be
@@ -170,7 +173,7 @@ if test -z "${NO_SMALL_DATA}"; then
   SDATA="/* We want the small data sections together, so single-instruction offsets
      can access them all, and initialized data all before uninitialized, so
      we can shorten the on-disk segment size.  */
-  .${SDATA_NAME}        ${RELOCATING-0} : 
+  .${SDATA_NAME}        ${RELOCATING-0} :
   {
     ${RELOCATING+${SDATA_START_SYMBOLS}}
     ${CREATE_SHLIB+*(.${SDATA_NAME}2 .${SDATA_NAME}2.* .gnu.linkonce.s2.*)}
@@ -255,7 +258,7 @@ FINI_ARRAY=".fini_array   ${RELOCATING-0} :
     ${DTORS_IN_FINI_ARRAY}
     ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__fini_array_end = .);}}
   }"
-CTOR=".ctors        ${CONSTRUCTING-0} : 
+CTOR=".ctors        ${CONSTRUCTING-0} :
   {
     ${CONSTRUCTING+${CTOR_START}}
     /* gcc uses crtbegin.o to find the start of
@@ -300,9 +303,15 @@ STACK="  .stack        ${RELOCATING-0}${RELOCATING+${STACK_ADDR}} :
 TEXT_START_ADDR="SEGMENT_START(\"text-segment\", ${TEXT_START_ADDR})"
 SHLIB_TEXT_START_ADDR="SEGMENT_START(\"text-segment\", ${SHLIB_TEXT_START_ADDR:-0})"
 
+if [ -z "$SEPARATE_CODE" ]; then
+  SIZEOF_HEADERS_CODE=" + SIZEOF_HEADERS"
+else
+  SIZEOF_HEADERS_CODE=
+fi
+
 # if this is for an embedded system, don't add SIZEOF_HEADERS.
 if [ -z "$EMBEDDED" ]; then
-   test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR} + SIZEOF_HEADERS"
+   test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR}${SIZEOF_HEADERS_CODE}"
 else
    test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR}"
 fi
@@ -325,11 +334,19 @@ 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} + SIZEOF_HEADERS;}}
-  ${CREATE_PIE+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR} + SIZEOF_HEADERS;}}
+  ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR}${SIZEOF_HEADERS_CODE};}}
+  ${CREATE_PIE+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR}${SIZEOF_HEADERS_CODE};}}
+EOF
+
+emit_early_ro()
+{
+  cat <<EOF
   ${INITIAL_READONLY_SECTIONS}
   .note.gnu.build-id : { *(.note.gnu.build-id) }
 EOF
+}
+
+test -n "${SEPARATE_CODE}" || emit_early_ro
 
 test -n "${RELOCATING+0}" || unset NON_ALLOC_DYN
 test -z "${NON_ALLOC_DYN}" || TEXT_DYNAMIC=
@@ -424,7 +441,8 @@ cat >> ldscripts/dyntmp.$$ <<EOF
   ${OTHER_PLT_RELOC_SECTIONS}
 EOF
 
-if test -z "${NON_ALLOC_DYN}"; then
+emit_dyn()
+{
   if test -z "${NO_REL_RELOCS}${NO_RELA_RELOCS}"; then
     cat ldscripts/dyntmp.$$
   else
@@ -436,11 +454,13 @@ if test -z "${NON_ALLOC_DYN}"; then
     fi
   fi
   rm -f ldscripts/dyntmp.$$
-fi
+}
+
+test -n "${NON_ALLOC_DYN}${SEPARATE_CODE}" || emit_dyn
 
 cat <<EOF
-  .init         ${RELOCATING-0} : 
-  { 
+  .init         ${RELOCATING-0} :
+  {
     ${RELOCATING+${INIT_START}}
     KEEP (*(.init))
     ${RELOCATING+${INIT_END}}
@@ -469,6 +489,21 @@ cat <<EOF
   ${RELOCATING+PROVIDE (__${ETEXT_NAME} = .);}
   ${RELOCATING+PROVIDE (_${ETEXT_NAME} = .);}
   ${RELOCATING+PROVIDE (${ETEXT_NAME} = .);}
+EOF
+
+if test -n "${SEPARATE_CODE}"; then
+  cat <<EOF
+  /* Adjust the address for the rodata segment.  We want to adjust up to
+     the same address within the page on the next page up.  */
+  ${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+. = ${RODATA_ADDR-ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))};}}}
+  ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_RODATA_ADDR-ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))};}}
+  ${CREATE_PIE+${RELOCATING+. = ${SHLIB_RODATA_ADDR-ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))};}}
+EOF
+  emit_early_ro
+  emit_dyn
+fi
+
+cat <<EOF
   ${WRITABLE_RODATA-${RODATA}}
   .${RODATA_NAME}1      ${RELOCATING-0} : { *(.${RODATA_NAME}1) }
   ${CREATE_SHLIB-${SDATA2}}
@@ -565,19 +600,7 @@ cat <<EOF
   ${RELOCATING+${DATA_SEGMENT_END}}
 EOF
 
-if test -n "${NON_ALLOC_DYN}"; then
-  if test -z "${NO_REL_RELOCS}${NO_RELA_RELOCS}"; then
-    cat ldscripts/dyntmp.$$
-  else
-    if test -z "${NO_REL_RELOCS}"; then
-      sed -e '/^[ 	]*\.rela\.[^}]*$/,/}/d' -e '/^[ 	]*\.rela\./d' ldscripts/dyntmp.$$
-    fi
-    if test -z "${NO_RELA_RELOCS}"; then
-      sed -e '/^[ 	]*\.rel\.[^}]*$/,/}/d' -e '/^[ 	]*\.rel\./d' ldscripts/dyntmp.$$
-    fi
-  fi
-  rm -f ldscripts/dyntmp.$$
-fi
+test -z "${NON_ALLOC_DYN}" || emit_dyn
 
 cat <<EOF
   /* Stabs debugging sections.  */