Add support for COFF secidx relocations

bfd	* coff-i386.c (in_reloc_p): Add R_SECTION.
	(howto_table): Add R_SECTION.
	(coff_pe_i386_relocation_section): Add support for R_SECTION.
	(coff_i386_reloc_type_lookup): Add support for
	BFD_RELOC_16_SECCIDX.
	* coff-x86_64.c (in_reloc_p): Add R_SECTION.
	(howto_table): Add R_SECTION.
	(coff_pe_amd64_relocation_section): Add support for R_SECTION.
	(coff_amd64_reloc_type_lookup): Add support for
	BFD_RELOC_16_SECCIDX.
	* reloc.c: Add BFD_RELOC_16_SECIDX.
	* bfd-in2.h: Regenerate.
	* libbfd.h: Regenerate.

gas	* config/tc-i386.c (pe_directive_secidx): New function.
	(md_pseudo_table): Add support for secidx.
	(x86_cons_fix_new): Likewise.
	(tc_gen_reloc): Likewise.
	* expr.c (op_rank): Add O_secidx.
	* expr.h (operatorT): Likewise.
	* symbols.c (resolve_symbol_value): Add support for O_secidx.
	* testsuite/gas/i386/secidx.s: New test source file.
	* testsuite/gas/i386/secidx.d: New test driver file.
	* testsuite/gas/i386/i386.exp: Run new test.

include	* coff/i386.h: Define R_SECTION.
	* coff/x86_64.h: Likewise.

ld	* testsuite/ld-pe/secidx1.s: New test source file.
	* testsuite/ld-pe/secidx2.s: New test source file.
	* testsuite/ld-pe/secidx.d: New test driver file.
	* testsuite/ld-pe/secidx_64.d: New test driver file.
	* testsuite/ld-pe/pe.exp: Add new tests.

6 files changed, 171 insertions, 0 deletions

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 7fb9f5d..1538f42 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,11 @@
+2022-04-07  Mark Harmstone  <mark@harmstone.com>
+
+	* testsuite/ld-pe/secidx1.s: New test source file.
+	* testsuite/ld-pe/secidx2.s: New test source file.
+	* testsuite/ld-pe/secidx.d: New test driver file.
+	* testsuite/ld-pe/secidx_64.d: New test driver file.
+	* testsuite/ld-pe/pe.exp: Add new tests.
+
 2022-03-01  Nick Clifton  <nickc@redhat.com>
 
 	PR 21964
diff --git a/ld/testsuite/ld-pe/pe.exp b/ld/testsuite/ld-pe/pe.exp
index f47c7eb..413b316 100644
--- a/ld/testsuite/ld-pe/pe.exp
+++ b/ld/testsuite/ld-pe/pe.exp
@@ -35,6 +35,8 @@ if {[istarget i*86-*-cygwin*]
       set pe_tests {
 	{".secrel32" "--disable-reloc-section" "" "" {secrel1.s secrel2.s}
 	 {{objdump -s secrel_64.d}} "secrel.x"}
+	{".secidx" "--disable-reloc-section" "" "" {secidx1.s secidx2.s}
+	 {{objdump -s secidx_64.d}} "secidx.x"}
 	{"Empty export table" "" "" "" "exports.s"
 	 {{objdump -p exports64.d}} "exports.dll"}
 	{"TLS directory entry" "" "" "" "tlssec.s"
@@ -44,6 +46,17 @@ if {[istarget i*86-*-cygwin*]
       set pe_tests {
 	{".secrel32" "--disable-auto-import --disable-reloc-section" "" "" {secrel1.s secrel2.s}
 	 {{objdump -s secrel.d}} "secrel.x"}
+	{".secidx" "--disable-auto-import --disable-reloc-section" "" "" {secidx1.s secidx2.s}
+	 {{objdump -s secidx.d}} "secidx.x"}
+	{"Empty export table" "" "" "" "exports.s"
+	 {{objdump -p exports.d}} "exports.dll"}
+	{"TLS directory entry" "" "" "" "tlssec.s"
+	 {{objdump -p tlssec32.d}} "tlssec.dll"}
+      }
+    } elseif {[istarget arm-wince-pe] } {
+      set pe_tests {
+	{".secrel32" "--disable-reloc-section" "" "" {secrel1.s secrel2.s}
+	 {{objdump -s secrel.d}} "secrel.x"}
 	{"Empty export table" "" "" "" "exports.s"
 	 {{objdump -p exports.d}} "exports.dll"}
 	{"TLS directory entry" "" "" "" "tlssec.s"
@@ -53,6 +66,8 @@ if {[istarget i*86-*-cygwin*]
       set pe_tests {
 	{".secrel32" "--disable-reloc-section" "" "" {secrel1.s secrel2.s}
 	 {{objdump -s secrel.d}} "secrel.x"}
+	{".secidx" "--disable-reloc-section" "" "" {secidx1.s secidx2.s}
+	 {{objdump -s secidx.d}} "secidx.x"}
 	{"Empty export table" "" "" "" "exports.s"
 	 {{objdump -p exports.d}} "exports.dll"}
 	{"TLS directory entry" "" "" "" "tlssec.s"
diff --git a/ld/testsuite/ld-pe/secidx.d b/ld/testsuite/ld-pe/secidx.d
new file mode 100644
index 0000000..20ace36
--- /dev/null
+++ b/ld/testsuite/ld-pe/secidx.d
@@ -0,0 +1,27 @@
+
+tmpdir/secidx\.x: +file format pei-.*
+
+Contents of section .text:
+ .*1000 3e3e3e3e 3c3c3c3c 3e3e3e3e 3e3c3c3c  >>>><<<<>>>>><<<
+ .*1010 3e3e3e3e 3e3e3c3c 3e3e3e3e 3e3e3e3c  >>>>>><<>>>>>>><
+ .*1020 3c3c3c3c 3e3e3e3e 3e909090 ffffffff  <<<<>>>>>.......
+ .*1030 00000000 ffffffff 00000000           ............    
+Contents of section .data:
+ .*2000 3e3e3e3e 3c3c3c3c 3e3e3e3e 3e3c3c3c  >>>><<<<>>>>><<<
+ .*2010 3e3e3e3e 3e3e3c3c 3e3e3e3e 3e3e3e3c  >>>>>><<>>>>>>><
+ .*2020 3e3e3e3e 01001101 00110100 11010011  >>>>............
+ .*2030 3c3c3c3c 3c3c3c3c 3e3e3e3e 02001102  <<<<<<<<>>>>....
+ .*2040 00110200 11020011 3c3c3c3c 3c3c3c3c  ........<<<<<<<<
+ .*2050 3e3e3e3e 03001103 00110300 11030011  >>>>............
+ .*2060 3c3c3c3c 3c3c3c3c 3e3e3e3e 01001102  <<<<<<<<>>>>....
+ .*2070 00110300 113c3c3c 3c3c3c3c 3c000000  .....<<<<<<<<...
+ .*2080 3c3c3c3e 3e3e3e3e 3e000000           <<<>>>>>>...    
+Contents of section .rdata:
+ .*3000 3e3e3e3e 3c3c3c3c 3e3e3e3e 3e3c3c3c  >>>><<<<>>>>><<<
+ .*3010 3e3e3e3e 3e3e3c3c 3e3e3e3e 3e3e3e3c  >>>>>><<>>>>>>><
+ .*3020 3e3e3e3e 00000000 00000000 00000000  >>>>............
+ .*3030 3c3c3c3e 3e3e3e3e 3e000000           <<<>>>>>>...    
+Contents of section .idata:
+ .*4000 00000000 00000000 00000000 00000000  ................
+ .*4010 00000000                             ....            
+#...
diff --git a/ld/testsuite/ld-pe/secidx1.s b/ld/testsuite/ld-pe/secidx1.s
new file mode 100644
index 0000000..b562caf
--- /dev/null
+++ b/ld/testsuite/ld-pe/secidx1.s
@@ -0,0 +1,77 @@
+.text
+
+	.ascii ">>>>"
+pre04:	.ascii "<<<<"
+	.ascii ">>>>>"
+pre0d:	.ascii "<<<"
+	.ascii ">>>>>>"
+pre16:	.ascii "<<"
+	.ascii ">>>>>>>"
+pre1f:	.ascii "<"
+
+.data
+
+	.ascii ">>>>"
+sam04:	.ascii "<<<<"
+	.ascii ">>>>>"
+sam0d:	.ascii "<<<"
+	.ascii ">>>>>>"
+sam16:	.ascii "<<"
+	.ascii ">>>>>>>"
+sam1f:	.ascii "<"
+
+	.ascii ">>>>"
+	.secidx pre04
+	.byte 0x11
+	.secidx pre0d
+	.byte 0x11
+	.secidx pre16
+	.byte 0x11
+	.secidx pre1f
+	.byte 0x11
+	.ascii "<<<<<<<<"
+
+	.ascii ">>>>"
+	.secidx sam04
+	.byte 0x11
+	.secidx sam0d
+	.byte 0x11
+	.secidx sam16
+	.byte 0x11
+	.secidx sam1f
+	.byte 0x11
+	.ascii "<<<<<<<<"
+
+	.ascii ">>>>"
+	.secidx nex04
+	.byte 0x11
+	.secidx nex0d
+	.byte 0x11
+	.secidx nex16
+	.byte 0x11
+	.secidx nex1f
+	.byte 0x11
+	.ascii "<<<<<<<<"
+
+	.ascii ">>>>"
+	.secidx ext1
+	.byte 0x11
+	.secidx ext2
+	.byte 0x11
+	.secidx ext3
+	.byte 0x11
+	.ascii "<<<<<<<<"
+
+.section .rdata
+
+	.ascii ">>>>"
+nex04:	.ascii "<<<<"
+	.ascii ">>>>>"
+nex0d:	.ascii "<<<"
+	.ascii ">>>>>>"
+nex16:	.ascii "<<"
+	.ascii ">>>>>>>"
+nex1f:	.ascii "<"
+	.ascii ">>>>"
+
+	.p2align 4,0
diff --git a/ld/testsuite/ld-pe/secidx2.s b/ld/testsuite/ld-pe/secidx2.s
new file mode 100644
index 0000000..0895bd9
--- /dev/null
+++ b/ld/testsuite/ld-pe/secidx2.s
@@ -0,0 +1,17 @@
+.text
+
+.global ext1
+ext1:	.ascii "<<<<"
+	.ascii ">>>>>"
+
+.data
+
+.global ext2
+ext2:	.ascii "<<<"
+	.ascii ">>>>>>"
+
+.section .rdata
+
+.global ext3
+ext3:	.ascii "<<<"
+	.ascii ">>>>>>"
diff --git a/ld/testsuite/ld-pe/secidx_64.d b/ld/testsuite/ld-pe/secidx_64.d
new file mode 100644
index 0000000..ddf4aec
--- /dev/null
+++ b/ld/testsuite/ld-pe/secidx_64.d
@@ -0,0 +1,27 @@
+
+tmpdir/secidx\.x: +file format pei-.*
+
+Contents of section \.text:
+ .*1000 3e3e3e3e 3c3c3c3c 3e3e3e3e 3e3c3c3c  >>>><<<<>>>>><<<
+ .*1010 3e3e3e3e 3e3e3c3c 3e3e3e3e 3e3e3e3c  >>>>>><<>>>>>>><
+ .*1020 3c3c3c3c 3e3e3e3e 3e909090 90909090  <<<<>>>>>.......
+ .*1030 ffffffff ffffffff 00000000 00000000  ................
+ .*1040 ffffffff ffffffff 00000000 00000000  ................
+Contents of section \.data:
+ .*2000 3e3e3e3e 3c3c3c3c 3e3e3e3e 3e3c3c3c  >>>><<<<>>>>><<<
+ .*2010 3e3e3e3e 3e3e3c3c 3e3e3e3e 3e3e3e3c  >>>>>><<>>>>>>><
+ .*2020 3e3e3e3e 01001101 00110100 11010011  >>>>............
+ .*2030 3c3c3c3c 3c3c3c3c 3e3e3e3e 02001102  <<<<<<<<>>>>....
+ .*2040 00110200 11020011 3c3c3c3c 3c3c3c3c  ........<<<<<<<<
+ .*2050 3e3e3e3e 03001103 00110300 11030011  >>>>............
+ .*2060 3c3c3c3c 3c3c3c3c 3e3e3e3e 01001102  <<<<<<<<>>>>....
+ .*2070 00110300 113c3c3c 3c3c3c3c 3c000000  .....<<<<<<<<...
+ .*2080 3c3c3c3e 3e3e3e3e 3e000000 00000000  <<<>>>>>>.......
+Contents of section \.rdata:
+ .*3000 3e3e3e3e 3c3c3c3c 3e3e3e3e 3e3c3c3c  >>>><<<<>>>>><<<
+ .*3010 3e3e3e3e 3e3e3c3c 3e3e3e3e 3e3e3e3c  >>>>>><<>>>>>>><
+ .*3020 3e3e3e3e 00000000 00000000 00000000  >>>>............
+ .*3030 3c3c3c3e 3e3e3e3e 3e000000 00000000  <<<>>>>>>.......
+Contents of section \.idata:
+ .*4000 00000000 00000000 00000000 00000000  ................
+ .*4010 00000000                             ....