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-rw-r--r--include/asm-arm/fpstate.h74
1 files changed, 74 insertions, 0 deletions
diff --git a/include/asm-arm/fpstate.h b/include/asm-arm/fpstate.h
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+++ b/include/asm-arm/fpstate.h
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+/*
+ * 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