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arch/arm/include/arch/arch_task.h

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+/*
+ * Copyright (C) 2006-2011 Apple Inc. All rights reserved.
+ *
+ * This document is the property of Apple Inc.
+ * It is considered confidential and proprietary.
+ *
+ * This document may not be reproduced or transmitted in any form,
+ * in whole or in part, without the express written permission of
+ * Apple Inc.
+ */
+#ifndef __ARCH_TASK_H
+#define __ARCH_TASK_H
+
+/*
+ * Note that this structure is known implicitly by code in context.S, and
+ * must be kept in sync.
+ */
+#if defined(__arm__)
+#ifndef __ASSEMBLY__
+struct arch_task {
+	/*
+	 * Core registers.
+	 */
+	uint32_t	regs[10]; 	// r4-r11, r13, r14
+
+#if WITH_VFP
+	/*
+	 * VFP/Neon registers.
+	 *
+	 * Note that layout must be kept in sync with offset defines below.
+	 */
+	uint32_t	fpexc;
+	uint32_t	fpscr;
+	uint64_t	fpregs[32];
+#endif
+};
+#endif /* __ASSEMBLY__ */
+
+/*
+ * Indices for useful core registers.
+ */
+#define ARM_ARCH_TASK_FP	3
+#define ARM_ARCH_TASK_SP	8
+#define ARM_ARCH_TASK_LR	9
+
+/*
+ * VFP/Neon field offsets - it would be nice to generate these automatically.
+ */
+#define ARM_ARCH_TASK_FP_OFFSET		40
+#define ARM_ARCH_TASK_FPEXC		(ARM_ARCH_TASK_FP_OFFSET + 0)
+#define ARM_ARCH_TASK_FPSCR		(ARM_ARCH_TASK_FP_OFFSET + 4)
+#define ARM_ARCH_TASK_FPREGS		(ARM_ARCH_TASK_FP_OFFSET + 8)
+
+
+#elif defined(__arm64__)
+
+#ifndef __ASSEMBLY__
+
+typedef __uint128_t uint128_t;
+
+struct arch_task {
+	/* Core registers */
+	uint64_t		regs[29];	// x0-x28
+	uint64_t		fp;
+	uint64_t		lr;
+	uint64_t		sp;	
+#if WITH_VFP		
+	/* Neon registers */
+	union {
+		uint128_t	q;
+		uint64_t	d;
+		uint32_t	s;
+	} vregs[32];				// v0-v31
+	uint32_t		fpsr;
+	uint32_t		fpcr;
+#endif	
+};
+#endif /* __ASSEMBLY__ */
+
+#endif /* __arm64__ */
+
+#endif /* ! __ARCH_TASK_H */