write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/arch/arm/vfp/vfpinstr.h
..
..
@@ -1,12 +1,9 @@
1
+/* SPDX-License-Identifier: GPL-2.0-only */
1
2
 /*
2
3
  *  linux/arch/arm/vfp/vfpinstr.h
3
4
  *
4
5
  *  Copyright (C) 2004 ARM Limited.
5
6
  *  Written by Deep Blue Solutions Limited.
6
- *
7
- * This program is free software; you can redistribute it and/or modify
8
- * it under the terms of the GNU General Public License version 2 as
9
- * published by the Free Software Foundation.
10
7
  *
11
8
  * VFP instruction masks.
12
9
  */
..
..
@@ -65,10 +62,23 @@
65
62
 #define FPSCR_C (1 << 29)
66
63
 #define FPSCR_V	(1 << 28)
67
64
 
68
-/*
69
- * Since we aren't building with -mfpu=vfp, we need to code
70
- * these instructions using their MRC/MCR equivalents.
71
- */
65
+#ifdef CONFIG_AS_VFP_VMRS_FPINST
66
+
67
+#define fmrx(_vfp_) ({			\
68
+	u32 __v;			\
69
+	asm(".fpu	vfpv2\n"	\
70
+	    "vmrs	%0, " #_vfp_	\
71
+	    : "=r" (__v) : : "cc");	\
72
+	__v;				\
73
+ })
74
+
75
+#define fmxr(_vfp_,_var_)		\
76
+	asm(".fpu	vfpv2\n"	\
77
+	    "vmsr	" #_vfp_ ", %0"	\
78
+	   : : "r" (_var_) : "cc")
79
+
80
+#else
81
+
72
82
 #define vfpreg(_vfp_) #_vfp_
73
83
 
74
84
 #define fmrx(_vfp_) ({			\
..
..
@@ -82,6 +92,8 @@
82
92
 	asm("mcr p10, 7, %0, " vfpreg(_vfp_) ", cr0, 0 @ fmxr	" #_vfp_ ", %0"	\
83
93
 	   : : "r" (_var_) : "cc")
84
94
 
95
+#endif
96
+
85
97
 u32 vfp_single_cpdo(u32 inst, u32 fpscr);
86
98
 u32 vfp_single_cprt(u32 inst, u32 fpscr, struct pt_regs *regs);
87
99