1 files changed, 93 insertions, 0 deletions

diff --git a/arch/arm/include/asm/fpstate.h b/arch/arm/include/asm/fpstate.h
new file mode 100644
index 000000000000..ee5e03efc1bb
--- /dev/null
+++ b/arch/arm/include/asm/fpstate.h
@@ -0,0 +1,93 @@
+/*
+ *  arch/arm/include/asm/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
+
+
+#ifndef __ASSEMBLY__
+
+/*
+ * VFP storage area has:
+ *  - FPEXC, FPSCR, FPINST and FPINST2.
+ *  - 16 or 32 double precision data registers
+ *  - an implementation-dependant word of state for FLDMX/FSTMX (pre-ARMv6)
+ * 
+ *  FPEXC will always be non-zero once the VFP has been used in this process.
+ */
+
+struct vfp_hard_struct {
+#ifdef CONFIG_VFPv3
+        __u64 fpregs[32];
+#else
+        __u64 fpregs[16];
+#endif
+#if __LINUX_ARM_ARCH__ < 6
+        __u32 fpmx_state;
+#endif
+        __u32 fpexc;
+        __u32 fpscr;
+        /*
+         * VFP implementation specific state
+         */
+        __u32 fpinst;
+        __u32 fpinst2;
+
+#ifdef CONFIG_SMP
+        __u32 cpu;
+#endif
+};
+
+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 */
+};
+
+#define IWMMXT_SIZE     0x98
+
+struct iwmmxt_struct {
+        unsigned int save[IWMMXT_SIZE / sizeof(unsigned int)];
+};
+
+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))
+
+struct crunch_state {
+        unsigned int    mvdx[16][2];
+        unsigned int    mvax[4][3];
+        unsigned int    dspsc[2];
+};
+
+#define CRUNCH_SIZE     sizeof(struct crunch_state)
+
+#endif
+
+#endif