From f61321eaaf040dd9213c5031e41548f7071cd195 Mon Sep 17 00:00:00 2001
From: "Frank Ch. Eigler" <fche@redhat.com>
Date: Mon, 20 Apr 1998 22:59:16 +0000
Subject: [PATCH] * Added one new R5900 COP2 test.

Mon Apr 20 18:36:50 1998  Frank Ch. Eigler  <fche@cygnus.com>

	* t-cop2b.c (test01): Additional COP2 tests (QMFC2/QMTC2/LQ/SQ).
	Don't use $1 ($at) register in inline assembly.
---
 sim/testsuite/sky/ChangeLog |  5 +++
 sim/testsuite/sky/t-cop2b.c | 64 ++++++++++++++++++++++++++++++++++---
 2 files changed, 64 insertions(+), 5 deletions(-)

diff --git a/sim/testsuite/sky/ChangeLog b/sim/testsuite/sky/ChangeLog
index b27ccc1f3d9..8f22c01b46c 100644
--- a/sim/testsuite/sky/ChangeLog
+++ b/sim/testsuite/sky/ChangeLog
@@ -1,3 +1,8 @@
+Mon Apr 20 18:36:50 1998  Frank Ch. Eigler  <fche@cygnus.com>
+
+	* t-cop2b.c (test01): Additional COP2 tests (QMFC2/QMTC2/LQ/SQ).
+	Don't use $1 ($at) register in inline assembly.
+
 Mon Apr 20 19:05:41 1998 Jillian Ye <jillian@cygnus.com>
 
 	* t-pke2.trc t-pke2.vif1expect : Update the testcase
diff --git a/sim/testsuite/sky/t-cop2b.c b/sim/testsuite/sky/t-cop2b.c
index 7d3d6f4ad2a..f761d31344a 100644
--- a/sim/testsuite/sky/t-cop2b.c
+++ b/sim/testsuite/sky/t-cop2b.c
@@ -31,12 +31,10 @@ void do_test(int ok, const char* test, int line);
 void
 enable_cop2()
 {
-  asm volatile (".set noat");
-  asm volatile ("mfc0 $1,$12; dli $2,0x40000000; or $1,$2,$2; mtc0 $1,$12"
+  asm volatile ("mfc0 $3,$12; dli $2,0x40000000; or $3,$2,$2; mtc0 $3,$12"
 		: /* no outputs */
 		: /* no inputs */
-		: "$1", "$2" /* clobbered */);
-  asm volatile (".set at");  
+		: "$3", "$2" /* clobbered */);
 }
 
 
@@ -45,7 +43,7 @@ do_test(int ok, const char* test, int line)
 {
   static int test_num = 0;
 
-  printf("[%d @ %d] (%s): ", ++test_num, line, test);
+  printf("[%3d @ %3d] (%s): ", ++test_num, line, test);
   if(ok)
     {
       num_ok ++;
@@ -116,6 +114,61 @@ void test00()
 
 
 
+/* test01: test QMFC2/QMTC2 data non-corruption */
+void test01()
+{
+  volatile float* data = & data_array[0];
+  volatile float* data2 = & data_array[4];
+
+  /* stuff some initial values */
+  data[0] = -10.0;
+  data[1] = +10.0;
+  data[2] = -20.0;
+  data[3] = +20.0;
+
+  /* save values */
+  asm volatile ("lq $4,%0; qmtc2 $4,vf01"
+		: /* no output */
+		: "m" (data[0]) /* input */
+		: "$4", "memory" /* clobbered */);
+
+  /* test no clobbering */
+  TEST(data[0] == -10.0f);
+  TEST(data[1] == +10.0f);
+  TEST(data[2] == -20.0f);
+  TEST(data[3] == +20.0f);
+
+  /* overwrite with VU constants */
+  asm volatile ("qmfc2 $4,vf00; sq $4,%0"
+		: /* no outputs */
+		: "m" (data[0]) /* input */
+		: "$4", "memory" /* clobbered */);
+
+  /* test proper values */
+  TEST(data[0] == 0.0f);
+  TEST(data[1] == 0.5f);
+  TEST(data[2] == -1.0f);
+  TEST(data[3] == +1.0f);
+
+  /* read back original array values */
+  asm volatile ("qmfc2 $4,vf01; sq $4,%0"
+		: /* no outputs */
+		: "m" (data2[0]) /* input */
+		: "$4", "memory" /* clobbered */);
+
+  /* printf("%f,%f,%f,%f\n", data2[0], data2[1], data2[2], data2[3]); */
+
+  /* test proper values */
+  TEST(data2[0] == -10.0f);
+  TEST(data2[1] == +10.0f);
+  TEST(data2[2] == -20.0f);
+  TEST(data2[3] == +20.0f);
+} 
+
+
+
+
+
 /* Mainline */
 
 
@@ -125,6 +178,7 @@ int main()
 
   /* tests */
   test00();
+  test01();
 
 
   /* summarize */