patch-2.3.4 linux/arch/sparc64/math-emu/fcmpq.c

• Lines: 53
• Date: Sat May 29 11:09:04 1999
• Orig file: v2.3.3/linux/arch/sparc64/math-emu/fcmpq.c
• Orig date: Wed Mar 10 16:53:37 1999

diff -u --recursive --new-file v2.3.3/linux/arch/sparc64/math-emu/fcmpq.c linux/arch/sparc64/math-emu/fcmpq.c
@@ -1,25 +1,39 @@
+/* $Id: fcmpq.c,v 1.5 1999/05/28 13:43:33 jj Exp $
+ * arch/sparc64/math-emu/fcmpq.c
+ *
+ * Copyright (C) 1997, 1999 Jakub Jelinek (jj@ultra.linux.cz)
+ * Copyright (C) 1999 David S. Miller (davem@redhat.com)
+ *
+ */
+
+#include "sfp-util.h"
 #include "soft-fp.h"
 #include "quad.h"
 
 int FCMPQ(void *rd, void *rs2, void *rs1)
 {
+	FP_DECL_EX;
 	FP_DECL_Q(A); FP_DECL_Q(B);
 	long ret;
-	int fccno = ((long)rd) & 3;
+	long fccno = (long)rd;
 	unsigned long fsr;
 	
-	rd = (void *)(((long)rd)&~3);
-	__FP_UNPACK_Q(A, rs1);
-	__FP_UNPACK_Q(B, rs2);
+	FP_UNPACK_RAW_QP(A, rs1);
+	FP_UNPACK_RAW_QP(B, rs2);
 	FP_CMP_Q(ret, B, A, 3);
-	if (ret == -1) ret = 2;
-	fsr = *(unsigned long *)rd;
-	switch (fccno) {
-	case 0: fsr &= ~0xc00; fsr |= (ret << 10); break;
-	case 1: fsr &= ~0x300000000UL; fsr |= (ret << 32); break;
-	case 2: fsr &= ~0xc00000000UL; fsr |= (ret << 34); break;
-	case 3: fsr &= ~0x3000000000UL; fsr |= (ret << 36); break;
+	if (ret == 3 && (FP_ISSIGNAN_Q(A) || FP_ISSIGNAN_Q(B)))
+		FP_SET_EXCEPTION(FP_EX_INVALID);
+	if (!FP_INHIBIT_RESULTS) {
+		rd = (void *)(((long)rd)&~3);
+		if (ret == -1) ret = 2;
+		fsr = current->tss.xfsr[0];
+		switch (fccno) {
+		case 0: fsr &= ~0xc00; fsr |= (ret << 10); break;
+		case 1: fsr &= ~0x300000000UL; fsr |= (ret << 32); break;
+		case 2: fsr &= ~0xc00000000UL; fsr |= (ret << 34); break;
+		case 3: fsr &= ~0x3000000000UL; fsr |= (ret << 36); break;
+		}
+		current->tss.xfsr[0] = fsr;
 	}
-	*(unsigned long *)rd = fsr;
-	return 0;
+	FP_HANDLE_EXCEPTIONS;
 }