1 files changed, 74 insertions, 0 deletions
diff --git a/include/asm-arm/fpstate.h b/include/asm-arm/fpstate.h
new file mode 100644
index 000000000000..f7430e3aa55d
--- /dev/null
+++ b/include/asm-arm/fpstate.h
@@ -0,0 +1,74 @@
+/*
+ *  linux/include/asm-arm/fpstate.h
+ *
+ *  Copyright (C) 1995 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARM_FPSTATE_H
+#define __ASM_ARM_FPSTATE_H
+
+#include <linux/config.h>
+
+#ifndef __ASSEMBLY__
+
+/*
+ * VFP storage area has:
+ *  - FPEXC, FPSCR, FPINST and FPINST2.
+ *  - 16 double precision data registers
+ *  - an implementation-dependant word of state for FLDMX/FSTMX
+ * 
+ *  FPEXC will always be non-zero once the VFP has been used in this process.
+ */
+
+struct vfp_hard_struct {
+	__u64 fpregs[16];
+	__u32 fpmx_state;
+	__u32 fpexc;
+	__u32 fpscr;
+	/*
+	 * VFP implementation specific state
+	 */
+	__u32 fpinst;
+	__u32 fpinst2;
+};
+
+union vfp_state {
+	struct vfp_hard_struct	hard;
+};
+
+extern void vfp_flush_thread(union vfp_state *);
+extern void vfp_release_thread(union vfp_state *);
+
+#define FP_HARD_SIZE 35
+
+struct fp_hard_struct {
+	unsigned int save[FP_HARD_SIZE];		/* as yet undefined */
+};
+
+#define FP_SOFT_SIZE 35
+
+struct fp_soft_struct {
+	unsigned int save[FP_SOFT_SIZE];		/* undefined information */
+};
+
+struct iwmmxt_struct {
+	unsigned int save[0x98/sizeof(int) + 1];
+};
+
+union fp_state {
+	struct fp_hard_struct	hard;
+	struct fp_soft_struct	soft;
+#ifdef CONFIG_IWMMXT
+	struct iwmmxt_struct	iwmmxt;
+#endif
+};
+
+#define FP_SIZE (sizeof(union fp_state) / sizeof(int))
+
+#endif
+
+#endif