From 6ad6615a79843aa224710a70a33fd15777f74f49 Mon Sep 17 00:00:00 2001
From: WANG Xuerui <git@xen0n.name>
Date: Fri, 30 Jun 2023 00:35:03 +0800
Subject: [PATCH] opcodes/loongarch: print unrecognized insn words with the
 .word directive

For better round-trip fidelity and readability in general.

gas/ChangeLog:

	* testsuite/gas/loongarch/uleb128.d: Update test case.
	* testsuite/gas/loongarch/raw-insn.d: New test.
	* testsuite/gas/loongarch/raw-insn.s: Likewise.

opcodes/ChangeLog:

	* loongarch-dis.c (disassemble_one): Print ".word" if !opc.

Signed-off-by: WANG Xuerui <git@xen0n.name>
---
 gas/testsuite/gas/loongarch/raw-insn.d | 11 +++++++++++
 gas/testsuite/gas/loongarch/raw-insn.s |  7 +++++++
 gas/testsuite/gas/loongarch/uleb128.d  | 20 ++++++++++----------
 opcodes/loongarch-dis.c                |  1 +
 4 files changed, 29 insertions(+), 10 deletions(-)
 create mode 100644 gas/testsuite/gas/loongarch/raw-insn.d
 create mode 100644 gas/testsuite/gas/loongarch/raw-insn.s

diff --git a/gas/testsuite/gas/loongarch/raw-insn.d b/gas/testsuite/gas/loongarch/raw-insn.d
new file mode 100644
index 00000000000..64980e47f7b
--- /dev/null
+++ b/gas/testsuite/gas/loongarch/raw-insn.d
@@ -0,0 +1,11 @@
+#as:
+#objdump: -dr
+
+.*:[ 	]+file format .*
+
+
+Disassembly of section .text:
+
+0+000 <target>:
+[ 	]+0:[ 	]+00000000[ 	]+.word[ 	]+0x00000000
+[ 	]+4:[ 	]+feedf00d[ 	]+.word[ 	]+0xfeedf00d
diff --git a/gas/testsuite/gas/loongarch/raw-insn.s b/gas/testsuite/gas/loongarch/raw-insn.s
new file mode 100644
index 00000000000..528b15263ae
--- /dev/null
+++ b/gas/testsuite/gas/loongarch/raw-insn.s
@@ -0,0 +1,7 @@
+target:
+	.word 0
+	# Given how the LoongArch encoding space is apparently centrally-
+	# managed and sequentially allocated in chunks of prefixes, it is
+	# highly unlikely this would become a valid LoongArch instruction in
+	# the foreseeable future.
+	.word 0xfeedf00d
diff --git a/gas/testsuite/gas/loongarch/uleb128.d b/gas/testsuite/gas/loongarch/uleb128.d
index df66587b692..ad67ded9e7d 100644
--- a/gas/testsuite/gas/loongarch/uleb128.d
+++ b/gas/testsuite/gas/loongarch/uleb128.d
@@ -8,29 +8,29 @@
 Disassembly of section .data:
 
 00000000.* <L1-0x5>:
-[ 	]+0:[ 	]+80030201[ 	]+0x80030201
+[ 	]+0:[ 	]+80030201[ 	]+\.word[ 	]+0x80030201
 [ 	]+3:[ 	]+R_LARCH_ADD_ULEB128[ 	]+L2
 [ 	]+3:[ 	]+R_LARCH_SUB_ULEB128[ 	]+L1
 [ 	]+\.\.\.
 
 0000000000000005[ 	]+<L1>:
 [ 	]+\.\.\.
-[ 	]+81:[ 	]+ff040000[ 	]+0xff040000
+[ 	]+81:[ 	]+ff040000[ 	]+\.word[ 	]+0xff040000
 [ 	]+85:[ 	]+cacop[ 	]+0x1f,[ 	]+\$t3,[ 	]+1
 
 0000000000000086[ 	]+<L2>:
-[ 	]+86:[ 	]+07060005[ 	]+0x07060005
-[ 	]+8a:[ 	]+0x00008080
+[ 	]+86:[ 	]+07060005[ 	]+\.word[ 	]+0x07060005
+[ 	]+8a:[ 	]+\.word[ 	]+0x00008080
 [ 	]+8a:[ 	]+R_LARCH_ADD_ULEB128[ 	]+L4
 [ 	]+8a:[ 	]+R_LARCH_SUB_ULEB128[ 	]+L3
 
 000000000000008d[ 	]+<L3>:
 [ 	]+\.\.\.
-[ 	]+4089:[ 	]+ff080000[ 	]+0xff080000
-[ 	]+408d:[ 	]+0x09ffffff
+[ 	]+4089:[ 	]+ff080000[ 	]+\.word[ 	]+0xff080000
+[ 	]+408d:[ 	]+\.word[ 	]+0x09ffffff
 
 0000000000004090[ 	]+<L4>:
-[ 	]+4090:[ 	]+09090909[ 	]+0x09090909
-[ 	]+4094:[ 	]+09090909[ 	]+0x09090909
-[ 	]+4098:[ 	]+09090909[ 	]+0x09090909
-[ 	]+409c:[ 	]+09090909[ 	]+0x09090909
+[ 	]+4090:[ 	]+09090909[ 	]+\.word[ 	]+0x09090909
+[ 	]+4094:[ 	]+09090909[ 	]+\.word[ 	]+0x09090909
+[ 	]+4098:[ 	]+09090909[ 	]+\.word[ 	]+0x09090909
+[ 	]+409c:[ 	]+09090909[ 	]+\.word[ 	]+0x09090909
diff --git a/opcodes/loongarch-dis.c b/opcodes/loongarch-dis.c
index c45c4fc617c..8d72519be9f 100644
--- a/opcodes/loongarch-dis.c
+++ b/opcodes/loongarch-dis.c
@@ -259,6 +259,7 @@ disassemble_one (insn_t insn, struct disassemble_info *info)
   if (!opc)
     {
       info->insn_type = dis_noninsn;
+      info->fprintf_styled_func (info->stream, dis_style_assembler_directive, ".word\t\t");
       info->fprintf_styled_func (info->stream, dis_style_immediate, "0x%08x", insn);
       return;
     }