Enhance GAS's .section directive so that it can take numeric values for the flags and type fields. (ELF only)

gas	* doc/as.texinfo (.section): Document that numeric values can now
	be used for the flags and type fields of the ELF target's .section
	directive.  Add notes about the restrictions on setting flags and
	types.
	* config/obj-elf.c (obj_elf_change_section): Allow known sections
	to be given processor specific section types.  Allow processor and
	application specific flags of a section to be set after
	definition.
	(obj_elf_parse_section_letters): Handle parsing numeric values.
	(obj_elf_section_type): Handle parsing numeric values.
	(obj_elf_section): Allow numeric type values.
	* config/obj-elf.h (obj_elf_change_section): Update prototype.
	* testsuite/gas/elf/section10.d: New test.
	* testsuite/gas/elf/section10.s: Source file for new test.
	* testsuite/gas/elf/elf.exp: Run the new test.
	* testsuite/gas/i386/ilp32/x86-64-unwind.d: Remove dependency upon
	the description of the flags produced by readelf.
	* testsuite/gas/tic6x/scomm-directive-4.d: Likewise.
	* NEWS: Mention the new feature.

bfd	* elf-bfd.h (struct bfd_elf_special_section): Use unsigned values
	for length and type fields.  Use a signed value for the
	suffix_length field.

binutils* readelf.c (get_section_type_name): Add hex prefix to offsets
	printed for LOPROC and LOOS values.  Ensure that a result is
	always returned for the V850 target, even when an unrecognised
	processor specific value is encountered.
	(process_section_headers): Display key values in the order in
	which they appear to the user.  Add the "C (compressed)" value to
	the list.

ld	* testsuite/ld-i386/pr12718.d: Remove dependency upon the
	description of the flags produced by readelf.
	* testsuite/ld-i386/pr12921.d: Likewise.
	* testsuite/ld-i386/tlsbin-nacl.rd: Likewise.
	* testsuite/ld-i386/tlsbin.rd: Likewise.
	* testsuite/ld-i386/tlsbindesc-nacl.rd: Likewise.
	* testsuite/ld-i386/tlsbindesc.rd: Likewise.
	* testsuite/ld-i386/tlsdesc-nacl.rd: Likewise.
	* testsuite/ld-i386/tlsdesc.rd: Likewise.
	* testsuite/ld-i386/tlsgdesc-nacl.rd: Likewise.
	* testsuite/ld-i386/tlsgdesc.rd: Likewise.
	* testsuite/ld-i386/tlsnopic-nacl.rd: Likewise.
	* testsuite/ld-i386/tlsnopic.rd: Likewise.
	* testsuite/ld-i386/tlspic-nacl.rd: Likewise.
	* testsuite/ld-i386/tlspic.rd: Likewise.
	* testsuite/ld-s390/tlsbin.rd: Likewise.
	* testsuite/ld-s390/tlsbin_64.rd: Likewise.
	* testsuite/ld-s390/tlspic.rd: Likewise.
	* testsuite/ld-s390/tlspic_64.rd: Likewise.
	* testsuite/ld-sh/tlsbin-2.d: Likewise.
	* testsuite/ld-sh/tlspic-2.d: Likewise.
	* testsuite/ld-tic6x/common.d: Likewise.
	* testsuite/ld-tic6x/shlib-1.rd: Likewise.
	* testsuite/ld-tic6x/shlib-1b.rd: Likewise.
	* testsuite/ld-tic6x/shlib-1r.rd: Likewise.
	* testsuite/ld-tic6x/shlib-1rb.rd: Likewise.
	* testsuite/ld-tic6x/shlib-app-1.rd: Likewise.
	* testsuite/ld-tic6x/shlib-app-1b.rd: Likewise.
	* testsuite/ld-tic6x/shlib-app-1r.rd: Likewise.
	* testsuite/ld-tic6x/shlib-app-1rb.rd: Likewise.
	* testsuite/ld-tic6x/shlib-noindex.rd: Likewise.
	* testsuite/ld-tic6x/static-app-1.rd: Likewise.
	* testsuite/ld-tic6x/static-app-1b.rd: Likewise.
	* testsuite/ld-tic6x/static-app-1r.rd: Likewise.
	* testsuite/ld-tic6x/static-app-1rb.rd: Likewise.
	* testsuite/ld-x86-64/ilp32-4-nacl.d: Likewise.
	* testsuite/ld-x86-64/ilp32-4.d: Likewise.
	* testsuite/ld-x86-64/pr12718.d: Likewise.
	* testsuite/ld-x86-64/pr12921.d: Likewise.
	* testsuite/ld-x86-64/split-by-file-nacl.rd: Likewise.
	* testsuite/ld-x86-64/split-by-file.rd: Likewise.
	* testsuite/ld-x86-64/tlsbin-nacl.rd: Likewise.
	* testsuite/ld-x86-64/tlsbin.rd: Likewise.
	* testsuite/ld-x86-64/tlsbindesc-nacl.rd: Likewise.
	* testsuite/ld-x86-64/tlsbindesc.rd: Likewise.
	* testsuite/ld-x86-64/tlsdesc-nacl.rd: Likewise.
	* testsuite/ld-x86-64/tlsdesc.rd: Likewise.
	* testsuite/ld-x86-64/tlsgdesc-nacl.rd: Likewise.
	* testsuite/ld-x86-64/tlsgdesc.rd: Likewise.
	* testsuite/ld-x86-64/tlspic-nacl.rd: Likewise.
	* testsuite/ld-x86-64/tlspic.rd: Likewise.
	* testsuite/ld-xtensa/tlsbin.rd: Likewise.
	* testsuite/ld-xtensa/tlspic.rd: Likewise.

6 files changed, 77 insertions, 10 deletions

diff --git a/gas/testsuite/gas/elf/elf.exp b/gas/testsuite/gas/elf/elf.exp
index 1c94016..40dfd12 100644
--- a/gas/testsuite/gas/elf/elf.exp
+++ b/gas/testsuite/gas/elf/elf.exp
@@ -201,6 +201,7 @@ if { [is_elf_format] } then {
     run_dump_test "section7"
     run_dump_test "section8"
     run_dump_test "section9"
+    run_dump_test "section10"
     run_dump_test "dwarf2-1"
     run_dump_test "dwarf2-2"
     run_dump_test "dwarf2-3"
diff --git a/gas/testsuite/gas/elf/section10.d b/gas/testsuite/gas/elf/section10.d
new file mode 100644
index 0000000..aa5ca3c
--- /dev/null
+++ b/gas/testsuite/gas/elf/section10.d
@@ -0,0 +1,36 @@
+#readelf: -N --wide
+#name: numeric section flags and types
+# The RX port annoyingly reorders the sections so that they do not match the sequence expected below.
+#skip: rx-*-*
+
+#...
+[ 	]*\[.*\][ 	]+.text
+[ 	]*PROGBITS.*
+[ 	]*\[.*4000006\]: ALLOC, EXEC, OS \(.*4000000\)
+#...
+[ 	]*\[.*\][ 	]+sec1
+[ 	]*PROGBITS.*
+[ 	]*\[.*6000000\]: OS \(.*6000000\)
+[ 	]*\[.*\][ 	]+sec2
+[ 	]*PROGBITS.*
+[ 	]*\[0+00806\]: ALLOC, EXEC, COMPRESSED
+[ 	]*\[<unknown>: 0x[0-9]+\], .*
+#...
+[ 	]*\[.*\][ 	]+sec3
+[ 	]*PROGBITS.*
+[ 	]*\[.*ffff030\]: MERGE, STRINGS,.* EXCLUDE, OS \(.*ff00000\), PROC \(.*[347]0000000\), UNKNOWN \(0+0ff000\)
+#...
+[ 	]*\[.*\][ 	]+sec4
+[ 	]*LOOS\+0x11[ 	].*
+[ 	]*\[0+06\]: ALLOC, EXEC
+#...
+[ 	]*\[.*\][ 	]+sec5
+[ 	]*LOUSER\+0x9[ 	].*
+[ 	]*\[.*fff0000\]:.* EXCLUDE, OS \(.*ff00000\), PROC \(.*[347]0000000\), UNKNOWN \(.*f0000\)
+[ 	]*\[.*\][ 	]+.data.foo
+[ 	]*LOUSER\+0x7f000000[ 	].*
+[ 	]*\[0+003\]: WRITE, ALLOC
+[ 	]*\[.*\][ 	]+sec6
+[ 	]*0000162e: <unknown>[ 	].*
+[ 	]*\[.*120004\]: EXEC, OS \(.*100000\), UNKNOWN \(.*20000\)
+#pass
diff --git a/gas/testsuite/gas/elf/section10.s b/gas/testsuite/gas/elf/section10.s
new file mode 100644
index 0000000..0576007
--- /dev/null
+++ b/gas/testsuite/gas/elf/section10.s
@@ -0,0 +1,35 @@
+	# Test numeric values for the section's flags field.
+	.section sec1, "0x06000000"
+	.word 1
+
+	# Make sure that a numeric value can be mixed with alpha values.
+	.section sec2, "a2048x"
+	.word 2
+
+	# Make sure that specifying further arguments to .sections is still supported
+	.section sec3, "0xfffff000MS", %progbits, 32
+	.word 3
+
+	# Make sure that extra flags can be set for well known sections as well.
+	.section .text, "0x04000006"
+	.word 4
+
+	# Test numeric values for the section's type field.
+	.section sec4, "ax", %0x60000011
+	.word 5
+
+	# Test both together, with a quoted type value.
+	.section sec5, "0xffff0000", "0x80000009"
+	.word 6
+
+	# Test that declaring an extended version of a known special section works.
+	.section .data.foo, "aw", %0xff000000
+	.word 7
+
+	# Check that .pushsection works as well.
+	.pushsection sec6, 2, "0x120004", %5678
+	.word 8
+
+	.popsection
+
+	# FIXME: We ought to check setting 64-bit flag values for 64-bit ELF targets...
diff --git a/gas/testsuite/gas/i386/ilp32/x86-64-unwind.d b/gas/testsuite/gas/i386/ilp32/x86-64-unwind.d
index 4f6f155..0bac7a2 100644
--- a/gas/testsuite/gas/i386/ilp32/x86-64-unwind.d
+++ b/gas/testsuite/gas/i386/ilp32/x86-64-unwind.d
@@ -15,7 +15,4 @@ Section Headers:
   \[ 6\] .symtab           SYMTAB          00000000 [0-9a-f]+ 000050 10      7   5  4
   \[ 7\] .strtab           STRTAB          00000000 [0-9a-f]+ 000001 00      0   0  1
 Key to Flags:
-  W \(write\), A \(alloc\), X \(execute\), M \(merge\), S \(strings\), l \(large\)
-  I \(info\), L \(link order\), G \(group\), T \(TLS\), E \(exclude\), x \(unknown\)
-  O \(extra OS processing required\) o \(OS specific\), p \(processor specific\)
 #pass
diff --git a/gas/testsuite/gas/rx/mvtacgu.d b/gas/testsuite/gas/rx/mvtacgu.d
index 96fe2ce..07053d0 100644
--- a/gas/testsuite/gas/rx/mvtacgu.d
+++ b/gas/testsuite/gas/rx/mvtacgu.d
@@ -6,7 +6,7 @@ dump\.o:     file format .*
 Disassembly of section \.text:
 
 00000000 <\.text>:
-   0:	fd 17 30                      	mvtacgu	r0, a0
-   3:	fd 17 3f                      	mvtacgu	r15, a0
-   6:	fd 17 b0                      	mvtacgu	r0, a1
-   9:	fd 17 bf                      	mvtacgu	r15, a1
+   0:	fd 17 30                      	mvtacgu	a0, r0
+   3:	fd 17 3f                      	mvtacgu	a0, r15
+   6:	fd 17 b0                      	mvtacgu	a1, r0
+   9:	fd 17 bf                      	mvtacgu	a1, r15
diff --git a/gas/testsuite/gas/tic6x/scomm-directive-4.d b/gas/testsuite/gas/tic6x/scomm-directive-4.d
index 18497ec..7822e8f 100644
--- a/gas/testsuite/gas/tic6x/scomm-directive-4.d
+++ b/gas/testsuite/gas/tic6x/scomm-directive-4.d
@@ -16,9 +16,7 @@ Section Headers:
   \[ 6\] \.symtab           SYMTAB          00000000 [0-9a-f]+ 0000d0 10      7   5  4
   \[ 7\] \.strtab           STRTAB          00000000 [0-9a-f]+ 00001d 00      0   0  1
 Key to Flags:
-  W \(write\), A \(alloc\), X \(execute\), M \(merge\), S \(strings\)
-  I \(info\), L \(link order\), G \(group\), T \(TLS\), E \(exclude\), x \(unknown\)
-  O \(extra OS processing required\) o \(OS specific\), p \(processor specific\)
+#...
 
 Symbol table '\.symtab' contains 13 entries:
    Num:    Value  Size Type    Bind   Vis      Ndx Name