diff --git a/ChangeLog b/ChangeLog
index 52276fca7..b65011aa4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2012-12-02 Paulo Andrade <pcpa@gnu.org>
+
+	* lib/jit_ppc.c: Assign copyright ownership to FSF.
+
+	* lib/jit_x86-cpu.c: Correct integer multiplication that was
+	generating code with reversed register arguments.
+
+	* check/rpn.ok, check/rpn.tst: New test case file.
+
 2012-12-02 Paulo Andrade <pcpa@gnu.org>
 
 	* lib/jit_x86-cpu.c, lib/jit_x86-sse.c, lib/jit_x86-x87.c:
diff --git a/check/Makefile.am b/check/Makefile.am
index c88f069ae..bb4ec40b5 100644
--- a/check/Makefile.am
+++ b/check/Makefile.am
@@ -31,10 +31,11 @@ EXTRA_DIST =				\
 	bp.tst		bp.ok		\
 	divi.tst	divi.ok		\
 	fib.tst		fib.ok		\
+	rpn.tst		rpn.ok		\
 	check.sh			\
 	all.tst
 
-TESTS = 3to2 add allocai bp divi fib
+TESTS = 3to2 add allocai bp divi fib rpn
 
 CLEANFILES = $(TESTS)
 
diff --git a/check/rpn.ok b/check/rpn.ok
new file mode 100644
index 000000000..b686c135f
--- /dev/null
+++ b/check/rpn.ok
@@ -0,0 +1,6 @@
+
+C:  0  10  20  30  40  50  60  70  80  90 100 
+F: 32  50  68  86 104 122 140 158 176 194 212 
+
+F: 32  50  68  86 104 122 140 158 176 194 212 
+C:  0  10  20  30  40  50  60  70  80  90 100 
diff --git a/check/rpn.tst b/check/rpn.tst
new file mode 100644
index 000000000..fe12557be
--- /dev/null
+++ b/check/rpn.tst
@@ -0,0 +1,170 @@
+.data	256
+.$($int = 4)
+C:
+.c "\nC:"
+F:
+.c "\nF:"
+format:
+.c "%3d "
+newline:
+.c "\n"
+
+.code
+	jmpi main
+
+c2f:
+	prolog
+	arg $in
+
+	allocai $(32 * $int) $index
+
+	getarg %r2 $in
+
+	// 32x9*5/+
+	movi %r0 32
+
+	// x9*5/+
+	stxi_i $index %fp %r0
+.	$($index = $index + $int)
+	movr %r0 %r2
+
+	// 9*5/+
+	stxi_i $index %fp %r0
+.	$($index = $index + $int)
+	movi %r0 9
+
+	// *5/+
+.	$($index = $index - $int)
+	ldxi_i %r1 %fp $index
+	mulr %r0 %r1 %r0
+
+	// 5/+
+	stxi_i $index %fp %r0
+.	$($index = $index + $int)
+	movi %r0 5
+
+	// /+
+.	$($index = $index - $int)
+	ldxi_i %r1 %fp $index
+	divr %r0 %r1 %r0
+
+	// +
+.	$($index = $index - $int)
+	ldxi_i %r1 %fp $index
+	addr %r0 %r1 %r0
+
+	retr %r0
+	epilog
+
+f2c:
+	prolog
+	arg $in
+
+	allocai $(32 * $int) $index
+
+	getarg %r2 $in
+
+	// x32-5*9/
+	stxi_i $index %fp %r0
+.	$($index = $index + $int)
+	movr %r0 %r2
+
+	// 32-5*9/
+	stxi_i $index %fp %r0
+.	$($index = $index + $int)
+	movi %r0 32
+
+	// -5*9/
+.	$($index = $index - $int)
+	ldxi_i %r1 %fp $index
+	subr %r0 %r1 %r0
+
+	// 5*9/
+	stxi_i $index %fp %r0
+.	$($index = $index + $int)
+	movi %r0 5
+
+	// *9/
+.	$($index = $index - $int)
+	ldxi_i %r1 %fp $index
+	mulr %r0 %r1 %r0
+
+	// 9/
+	stxi_i $index %fp %r0
+.	$($index = $index + $int)
+	movi %r0 9
+
+	// /
+.	$($index = $index - $int)
+	ldxi_i %r1 %fp $index
+	divr %r0 %r1 %r0
+
+	retr %r0
+	epilog
+
+//-----------------------------------------------------------------------
+main:
+	prolog
+
+	prepare 1
+		pushargi C
+	finishi @printf
+	movi %v0 0
+loopC:
+	prepare 1
+		pushargi format
+		pushargr %v0
+	finishi @printf
+	addi %v0 %v0 10
+	blei loopC %v0 100
+	prepare 1
+		pushargi F
+	finishi @printf
+	movi %v0 0
+loopC2F:
+	prepare 0
+		pushargr %v0
+	finishi c2f
+	retval %r0
+	prepare 2
+		pushargi format
+		pushargr %r0
+	finishi @printf
+	addi %v0 %v0 10
+	blei loopC2F %v0 100
+	prepare 1
+		pushargi newline
+	finishi @printf
+
+	prepare 1
+		pushargi F
+	finishi @printf
+	movi %v0 32
+loopF:
+	prepare 2
+		pushargi format
+		pushargr %v0
+	finishi @printf
+	addi %v0 %v0 18
+	blei loopF %v0 212
+	prepare 1
+		pushargi C
+	finishi @printf
+	movi %v0 32
+loopF2C:
+	prepare 0
+		pushargr %v0
+	finishi f2c
+	retval %r0
+	prepare 2
+		pushargi format
+		pushargr %r0
+	finishi @printf
+	addi %v0 %v0 18
+	blei loopF2C %v0 212
+	prepare 1
+		pushargi newline
+	finishi @printf
+
+	ret
+	epilog
diff --git a/lib/jit_ppc.c b/lib/jit_ppc.c
index 70af328a6..4a2e26920 100644
--- a/lib/jit_ppc.c
+++ b/lib/jit_ppc.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011  Paulo Cesar Pereira de Andrade.
+ * Copyright (C) 2012  Free Software Foundation, Inc.
  *
  * This is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/lib/jit_x86-cpu.c b/lib/jit_x86-cpu.c
index 71fcb963d..9be3721f1 100644
--- a/lib/jit_x86-cpu.c
+++ b/lib/jit_x86-cpu.c
@@ -1053,10 +1053,10 @@ _subxi(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1, jit_word_t i0)
 static void
 _imulr(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1)
 {
-    rex(0, 1, r1, _NOREG, r0);
+    rex(0, 1, r0, _NOREG, r1);
     ic(0x0f);
     ic(0xaf);
-    mrm(0x03, r7(r1), r7(r0));
+    mrm(0x03, r7(r0), r7(r1));
 }
 
 static void