From c609719b8d1b2dca590e0ed499016d041203e403 Mon Sep 17 00:00:00 2001
From: wdenk <wdenk>
Date: Sun, 3 Nov 2002 00:24:07 +0000
Subject: Initial revision

---
 include/asm-arm/proc-armv/ptrace.h | 110 +++++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 include/asm-arm/proc-armv/ptrace.h

(limited to 'include/asm-arm/proc-armv')

diff --git a/include/asm-arm/proc-armv/ptrace.h b/include/asm-arm/proc-armv/ptrace.h
new file mode 100644
index 0000000000..51708b9b1a
--- /dev/null
+++ b/include/asm-arm/proc-armv/ptrace.h
@@ -0,0 +1,110 @@
+/*
+ *  linux/include/asm-arm/proc-armv/ptrace.h
+ *
+ *  Copyright (C) 1996-1999 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_PROC_PTRACE_H
+#define __ASM_PROC_PTRACE_H
+
+#include <linux/config.h>
+
+#define USR26_MODE	0x00
+#define FIQ26_MODE	0x01
+#define IRQ26_MODE	0x02
+#define SVC26_MODE	0x03
+#define USR_MODE	0x10
+#define FIQ_MODE	0x11
+#define IRQ_MODE	0x12
+#define SVC_MODE	0x13
+#define ABT_MODE	0x17
+#define UND_MODE	0x1b
+#define SYSTEM_MODE	0x1f
+#define MODE_MASK	0x1f
+#define T_BIT		0x20
+#define F_BIT		0x40
+#define I_BIT		0x80
+#define CC_V_BIT	(1 << 28)
+#define CC_C_BIT	(1 << 29)
+#define CC_Z_BIT	(1 << 30)
+#define CC_N_BIT	(1 << 31)
+#define PCMASK		0
+
+#ifndef __ASSEMBLY__
+
+/* this struct defines the way the registers are stored on the
+   stack during a system call. */
+
+struct pt_regs {
+	long uregs[18];
+};
+
+#define ARM_cpsr	uregs[16]
+#define ARM_pc		uregs[15]
+#define ARM_lr		uregs[14]
+#define ARM_sp		uregs[13]
+#define ARM_ip		uregs[12]
+#define ARM_fp		uregs[11]
+#define ARM_r10		uregs[10]
+#define ARM_r9		uregs[9]
+#define ARM_r8		uregs[8]
+#define ARM_r7		uregs[7]
+#define ARM_r6		uregs[6]
+#define ARM_r5		uregs[5]
+#define ARM_r4		uregs[4]
+#define ARM_r3		uregs[3]
+#define ARM_r2		uregs[2]
+#define ARM_r1		uregs[1]
+#define ARM_r0		uregs[0]
+#define ARM_ORIG_r0	uregs[17]
+
+#ifdef __KERNEL__
+
+#define user_mode(regs)	\
+	(((regs)->ARM_cpsr & 0xf) == 0)
+
+#ifdef CONFIG_ARM_THUMB
+#define thumb_mode(regs) \
+	(((regs)->ARM_cpsr & T_BIT))
+#else
+#define thumb_mode(regs) (0)
+#endif
+
+#define processor_mode(regs) \
+	((regs)->ARM_cpsr & MODE_MASK)
+
+#define interrupts_enabled(regs) \
+	(!((regs)->ARM_cpsr & I_BIT))
+
+#define fast_interrupts_enabled(regs) \
+	(!((regs)->ARM_cpsr & F_BIT))
+
+#define condition_codes(regs) \
+	((regs)->ARM_cpsr & (CC_V_BIT|CC_C_BIT|CC_Z_BIT|CC_N_BIT))
+
+/* Are the current registers suitable for user mode?
+ * (used to maintain security in signal handlers)
+ */
+static inline int valid_user_regs(struct pt_regs *regs)
+{
+	if ((regs->ARM_cpsr & 0xf) == 0 &&
+	    (regs->ARM_cpsr & (F_BIT|I_BIT)) == 0)
+		return 1;
+
+	/*
+	 * Force CPSR to something logical...
+	 */
+	regs->ARM_cpsr &= (CC_V_BIT|CC_C_BIT|CC_Z_BIT|CC_N_BIT|0x10);
+
+	return 0;
+}
+
+#endif	/* __KERNEL__ */
+
+#endif	/* __ASSEMBLY__ */
+
+#endif
+
-- 
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