From 51b52f4aded095af5722ecc5c0c5f4fde1bcf7aa Mon Sep 17 00:00:00 2001
From: Peter Bergner <bergner@linux.ibm.com>
Date: Tue, 8 Nov 2022 17:41:52 -0600
Subject: PowerPC: Add support for RFC02655 - Saturating Subtract Instruction

opcodes/
	* ppc-opc.c (XOL): New define.
	(XOL_MASK): Likewise.
	(powerpc_opcodes): Add subfus, subfus., subwus, subwus., subdus, subdus.

gas/
	* testsuite/gas/ppc/rfc02655.s: New test.
	* testsuite/gas/ppc/rfc02655.d: Likewise
	* testsuite/gas/ppc/future-raw.s: Likewise.
	* testsuite/gas/ppc/future-raw.d: Likewise.
	* testsuite/gas/ppc/ppc.exp: Run them.
---
 gas/testsuite/gas/ppc/future-raw.d | 15 +++++++++++++++
 gas/testsuite/gas/ppc/future-raw.s |  6 ++++++
 gas/testsuite/gas/ppc/ppc.exp      |  2 ++
 gas/testsuite/gas/ppc/rfc02655.d   | 19 +++++++++++++++++++
 gas/testsuite/gas/ppc/rfc02655.s   | 10 ++++++++++
 5 files changed, 52 insertions(+)
 create mode 100644 gas/testsuite/gas/ppc/future-raw.d
 create mode 100644 gas/testsuite/gas/ppc/future-raw.s
 create mode 100644 gas/testsuite/gas/ppc/rfc02655.d
 create mode 100644 gas/testsuite/gas/ppc/rfc02655.s

(limited to 'gas')

diff --git a/gas/testsuite/gas/ppc/future-raw.d b/gas/testsuite/gas/ppc/future-raw.d
new file mode 100644
index 0000000..c6e71a6
--- /dev/null
+++ b/gas/testsuite/gas/ppc/future-raw.d
@@ -0,0 +1,15 @@
+#as: -mfuture
+#objdump: -dr -Mfuture -Mraw
+#name: Future tests - raw disassembly
+
+.*
+
+
+Disassembly of section \.text:
+
+0+0 <_start>:
+.*:	(90 58 4c 7d|7d 4c 58 90) 	subfus  r10,0,r12,r11
+.*:	(91 58 4c 7d|7d 4c 58 91) 	subfus\. r10,0,r12,r11
+.*:	(90 ac 96 7e|7e 96 ac 90) 	subfus  r20,1,r22,r21
+.*:	(91 ac 96 7e|7e 96 ac 91) 	subfus\. r20,1,r22,r21
+#pass
diff --git a/gas/testsuite/gas/ppc/future-raw.s b/gas/testsuite/gas/ppc/future-raw.s
new file mode 100644
index 0000000..578b0ce
--- /dev/null
+++ b/gas/testsuite/gas/ppc/future-raw.s
@@ -0,0 +1,6 @@
+	.text
+_start:
+	subwus	10,11,12
+	subwus.	10,11,12
+	subdus	20,21,22
+	subdus.	20,21,22
diff --git a/gas/testsuite/gas/ppc/ppc.exp b/gas/testsuite/gas/ppc/ppc.exp
index 3c593ec..af890de 100644
--- a/gas/testsuite/gas/ppc/ppc.exp
+++ b/gas/testsuite/gas/ppc/ppc.exp
@@ -146,8 +146,10 @@ run_dump_test "scalarquad"
 run_dump_test "rop"
 run_dump_test "rop-checks"
 run_dump_test "rfc02653"
+run_dump_test "rfc02655"
 run_dump_test "rfc02656"
 run_dump_test "rfc02658"
+run_dump_test "future-raw"
 
 run_dump_test "dcbt"
 run_dump_test "pr27676"
diff --git a/gas/testsuite/gas/ppc/rfc02655.d b/gas/testsuite/gas/ppc/rfc02655.d
new file mode 100644
index 0000000..3a1d008
--- /dev/null
+++ b/gas/testsuite/gas/ppc/rfc02655.d
@@ -0,0 +1,19 @@
+#as: -mfuture
+#objdump: -dr -Mfuture
+#name: RFC02655 tests
+
+.*
+
+
+Disassembly of section \.text:
+
+0+0 <_start>:
+.*:	(90 58 4c 7d|7d 4c 58 90) 	subwus  r10,r11,r12
+.*:	(90 58 4c 7d|7d 4c 58 90) 	subwus  r10,r11,r12
+.*:	(91 58 4c 7d|7d 4c 58 91) 	subwus\. r10,r11,r12
+.*:	(91 58 4c 7d|7d 4c 58 91) 	subwus\. r10,r11,r12
+.*:	(90 ac 96 7e|7e 96 ac 90) 	subdus  r20,r21,r22
+.*:	(90 ac 96 7e|7e 96 ac 90) 	subdus  r20,r21,r22
+.*:	(91 ac 96 7e|7e 96 ac 91) 	subdus\. r20,r21,r22
+.*:	(91 ac 96 7e|7e 96 ac 91) 	subdus\. r20,r21,r22
+#pass
diff --git a/gas/testsuite/gas/ppc/rfc02655.s b/gas/testsuite/gas/ppc/rfc02655.s
new file mode 100644
index 0000000..b80c34e
--- /dev/null
+++ b/gas/testsuite/gas/ppc/rfc02655.s
@@ -0,0 +1,10 @@
+	.text
+_start:
+	subfus	10,0,12,11
+	subwus	10,11,12
+	subfus.	10,0,12,11
+	subwus.	10,11,12
+	subfus	20,1,22,21
+	subdus	20,21,22
+	subfus.	20,1,22,21
+	subdus.	20,21,22
-- 
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