x86-64: Add Intel LAM property support

Add Intel Linear Address Masking (LAM) property support.  LAM modifies
the checking that is applied to 64-bit linear addresses, allowing
software to use of the untranslated address bits for metadata.

bfd/

	* elf-linker-x86.h (elf_x86_cet_report): Renamed to ...
	(elf_x86_prop_report): This.
	(elf_linker_x86_params): Add lam_u48, lam_u57, lam_u48_report
	and lam_u57_report.
	* elfxx-x86.c (_bfd_x86_elf_link_setup_gnu_properties): Support
	GNU_PROPERTY_X86_FEATURE_1_LAM_U48 and
	GNU_PROPERTY_X86_FEATURE_1_LAM_U57.
	(_bfd_x86_elf_link_fixup_gnu_properties): Keep LAM features only
	for 64-bit output.

binutils/

	* NEWS: Mention LAM_U48 and LAM_U57 support.
	* elfedit.c (elf_x86_feature): Support lam_u48 and lam_u57.
	(usage): Add lam_u48 and lam_u57.
	* readelf.c (decode_x86_feature_1): Support LAM_U48 and LAM_U57.
	* doc/binutils.texi: Update elfedit with lam_u48 and lam_u57
	support.
	* testsuite/binutils-all/x86-64/lam-u48.d: New file.
	* testsuite/binutils-all/x86-64/lam-u48.s: Likewise.
	* testsuite/binutils-all/x86-64/lam-u57.d: Likewise.
	* testsuite/binutils-all/x86-64/lam-u57.s: Likewise.

include/

	* elf/common.h (GNU_PROPERTY_X86_FEATURE_1_LAM_U48): New.
	(GNU_PROPERTY_X86_FEATURE_1_LAM_U57): Likewise.

ld/

	* NEWS: Mention LAM_U48 and LAM_U57 support.
	* ld.texi: Document LAM_U48 and LAM_U57 support.
	* emulparams/cet.sh: Updated.
	* emulparams/elf_x86_64.sh: Source x86-64-lam.sh.
	* emulparams/x86-64-lam.sh: New file.
	* testsuite/ld-x86-64/property-x86-lam-u48-1a.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u48-1b.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u48-2.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u48-3a.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u48-3b.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u48-4.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u48-5.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u48.s: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u57-1a.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u57-1b.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u57-2.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u57-3a.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u57-3b.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u57-4.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u57-5.d: Likewise.
	* testsuite/ld-x86-64/property-x86-lam-u57.s: Likewise.
	* testsuite/ld-x86-64/x86-64.exp: Run LAM tests.

3 files changed, 77 insertions, 7 deletions

diff --git a/ld/emulparams/cet.sh b/ld/emulparams/cet.sh
index f9a83ec..d9e81df 100644
--- a/ld/emulparams/cet.sh
+++ b/ld/emulparams/cet.sh
@@ -19,15 +19,15 @@ PARSE_AND_LIST_ARGS_CASE_Z_CET='
       else if (strncmp (optarg, "cet-report=", 11) == 0)
 	{
 	  if (strcmp (optarg + 11, "none") == 0)
-	    params.cet_report = cet_report_none;
+	    params.cet_report = prop_report_none;
 	  else if (strcmp (optarg + 11, "warning") == 0)
-	    params.cet_report = (cet_report_warning
-				 | cet_report_ibt
-				 | cet_report_shstk);
+	    params.cet_report = (prop_report_warning
+				 | prop_report_ibt
+				 | prop_report_shstk);
 	  else if (strcmp (optarg + 11, "error") == 0)
-	    params.cet_report = (cet_report_error
-				 | cet_report_ibt
-				 | cet_report_shstk);
+	    params.cet_report = (prop_report_error
+				 | prop_report_ibt
+				 | prop_report_shstk);
 	  else
 	    einfo (_("%F%P: invalid option for -z cet-report=: %s\n"),
 		   optarg + 11);
diff --git a/ld/emulparams/elf_x86_64.sh b/ld/emulparams/elf_x86_64.sh
index 5996055..664ff18 100644
--- a/ld/emulparams/elf_x86_64.sh
+++ b/ld/emulparams/elf_x86_64.sh
@@ -5,6 +5,7 @@ source_sh ${srcdir}/emulparams/reloc_overflow.sh
 source_sh ${srcdir}/emulparams/call_nop.sh
 source_sh ${srcdir}/emulparams/cet.sh
 source_sh ${srcdir}/emulparams/x86-64-level.sh
+source_sh ${srcdir}/emulparams/x86-64-lam.sh
 source_sh ${srcdir}/emulparams/static.sh
 SCRIPT_NAME=elf
 ELFSIZE=64
diff --git a/ld/emulparams/x86-64-lam.sh b/ld/emulparams/x86-64-lam.sh
new file mode 100644
index 0000000..40ddb05
--- /dev/null
+++ b/ld/emulparams/x86-64-lam.sh
@@ -0,0 +1,69 @@
+PARSE_AND_LIST_OPTIONS_LAM='
+  fprintf (file, _("\
+  -z lam-u48                  Generate GNU_PROPERTY_X86_FEATURE_1_LAM_U48\n"));
+  fprintf (file, _("\
+  -z lam-u48-report=[none|warning|error] (default: none)\n\
+                              Report missing LAM_U48 property\n"));
+  fprintf (file, _("\
+  -z lam-u57                  Generate GNU_PROPERTY_X86_FEATURE_1_LAM_U57\n"));
+  fprintf (file, _("\
+  -z lam-u57-report=[none|warning|error] (default: none)\n\
+                              Report missing LAM_U57 property\n"));
+  fprintf (file, _("\
+  -z lam-report=[none|warning|error] (default: none)\n\
+                              Report missing LAM_U48 and LAM_U57 properties\n"));
+'
+PARSE_AND_LIST_ARGS_CASE_Z_LAM='
+      else if (strcmp (optarg, "lam-u48") == 0)
+	params.lam_u48 = TRUE;
+      else if (strncmp (optarg, "lam-u48-report=", 15) == 0)
+	{
+	  if (strcmp (optarg + 15, "none") == 0)
+	    params.lam_u48_report = prop_report_none;
+	  else if (strcmp (optarg + 15, "warning") == 0)
+	    params.lam_u48_report = prop_report_warning;
+	  else if (strcmp (optarg + 15, "error") == 0)
+	    params.lam_u48_report = prop_report_error;
+	  else
+	    einfo (_("%F%P: invalid option for -z lam-u48-report=: %s\n"),
+		   optarg + 15);
+	}
+      else if (strcmp (optarg, "lam-u57") == 0)
+	params.lam_u57 = TRUE;
+      else if (strncmp (optarg, "lam-u57-report=", 15) == 0)
+	{
+	  if (strcmp (optarg + 15, "none") == 0)
+	    params.lam_u57_report = prop_report_none;
+	  else if (strcmp (optarg + 15, "warning") == 0)
+	    params.lam_u57_report = prop_report_warning;
+	  else if (strcmp (optarg + 15, "error") == 0)
+	    params.lam_u57_report = prop_report_error;
+	  else
+	    einfo (_("%F%P: invalid option for -z lam-u57-report=: %s\n"),
+		   optarg + 15);
+	}
+      else if (strncmp (optarg, "lam-report=", 11) == 0)
+	{
+	  if (strcmp (optarg + 11, "none") == 0)
+	    {
+	      params.lam_u48_report = prop_report_none;
+	      params.lam_u57_report = prop_report_none;
+	    }
+	  else if (strcmp (optarg + 11, "warning") == 0)
+	    {
+	      params.lam_u48_report = prop_report_warning;
+	      params.lam_u57_report = prop_report_warning;
+	    }
+	  else if (strcmp (optarg + 11, "error") == 0)
+	    {
+	      params.lam_u48_report = prop_report_error;
+	      params.lam_u57_report = prop_report_error;
+	    }
+	  else
+	    einfo (_("%F%P: invalid option for -z lam-report=: %s\n"),
+		   optarg + 11);
+	}
+'
+
+PARSE_AND_LIST_OPTIONS="$PARSE_AND_LIST_OPTIONS $PARSE_AND_LIST_OPTIONS_LAM"
+PARSE_AND_LIST_ARGS_CASE_Z="$PARSE_AND_LIST_ARGS_CASE_Z $PARSE_AND_LIST_ARGS_CASE_Z_LAM"