1 files changed, 157 insertions, 0 deletions
diff --git a/arch/arm/include/asm/ptrace.h b/arch/arm/include/asm/ptrace.h
new file mode 100644
index 000000000000..73192618f1c2
--- /dev/null
+++ b/arch/arm/include/asm/ptrace.h
@@ -0,0 +1,157 @@
+/*
+ *  arch/arm/include/asm/ptrace.h
+ *
+ *  Copyright (C) 1996-2003 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_PTRACE_H
+#define __ASM_ARM_PTRACE_H
+
+#include <asm/hwcap.h>
+
+#define PTRACE_GETREGS		12
+#define PTRACE_SETREGS		13
+#define PTRACE_GETFPREGS	14
+#define PTRACE_SETFPREGS	15
+/* PTRACE_ATTACH is 16 */
+/* PTRACE_DETACH is 17 */
+#define PTRACE_GETWMMXREGS	18
+#define PTRACE_SETWMMXREGS	19
+/* 20 is unused */
+#define PTRACE_OLDSETOPTIONS	21
+#define PTRACE_GET_THREAD_AREA	22
+#define PTRACE_SET_SYSCALL	23
+/* PTRACE_SYSCALL is 24 */
+#define PTRACE_GETCRUNCHREGS	25
+#define PTRACE_SETCRUNCHREGS	26
+
+/*
+ * PSR bits
+ */
+#define USR26_MODE	0x00000000
+#define FIQ26_MODE	0x00000001
+#define IRQ26_MODE	0x00000002
+#define SVC26_MODE	0x00000003
+#define USR_MODE	0x00000010
+#define FIQ_MODE	0x00000011
+#define IRQ_MODE	0x00000012
+#define SVC_MODE	0x00000013
+#define ABT_MODE	0x00000017
+#define UND_MODE	0x0000001b
+#define SYSTEM_MODE	0x0000001f
+#define MODE32_BIT	0x00000010
+#define MODE_MASK	0x0000001f
+#define PSR_T_BIT	0x00000020
+#define PSR_F_BIT	0x00000040
+#define PSR_I_BIT	0x00000080
+#define PSR_A_BIT	0x00000100
+#define PSR_J_BIT	0x01000000
+#define PSR_Q_BIT	0x08000000
+#define PSR_V_BIT	0x10000000
+#define PSR_C_BIT	0x20000000
+#define PSR_Z_BIT	0x40000000
+#define PSR_N_BIT	0x80000000
+
+/*
+ * Groups of PSR bits
+ */
+#define PSR_f		0xff000000	/* Flags		*/
+#define PSR_s		0x00ff0000	/* Status		*/
+#define PSR_x		0x0000ff00	/* Extension		*/
+#define PSR_c		0x000000ff	/* Control		*/
+
+#ifndef __ASSEMBLY__
+
+/*
+ * This struct defines the way the registers are stored on the
+ * stack during a system call.  Note that sizeof(struct pt_regs)
+ * has to be a multiple of 8.
+ */
+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 & PSR_T_BIT))
+#else
+#define thumb_mode(regs) (0)
+#endif
+
+#define isa_mode(regs) \
+	((((regs)->ARM_cpsr & PSR_J_BIT) >> 23) | \
+	 (((regs)->ARM_cpsr & PSR_T_BIT) >> 5))
+
+#define processor_mode(regs) \
+	((regs)->ARM_cpsr & MODE_MASK)
+
+#define interrupts_enabled(regs) \
+	(!((regs)->ARM_cpsr & PSR_I_BIT))
+
+#define fast_interrupts_enabled(regs) \
+	(!((regs)->ARM_cpsr & PSR_F_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 (user_mode(regs) && (regs->ARM_cpsr & PSR_I_BIT) == 0) {
+		regs->ARM_cpsr &= ~(PSR_F_BIT | PSR_A_BIT);
+		return 1;
+	}
+
+	/*
+	 * Force CPSR to something logical...
+	 */
+	regs->ARM_cpsr &= PSR_f | PSR_s | (PSR_x & ~PSR_A_BIT) | PSR_T_BIT | MODE32_BIT;
+	if (!(elf_hwcap & HWCAP_26BIT))
+		regs->ARM_cpsr |= USR_MODE;
+
+	return 0;
+}
+
+#define instruction_pointer(regs)	(regs)->ARM_pc
+
+#ifdef CONFIG_SMP
+extern unsigned long profile_pc(struct pt_regs *regs);
+#else
+#define profile_pc(regs) instruction_pointer(regs)
+#endif
+
+#define predicate(x)		((x) & 0xf0000000)
+#define PREDICATE_ALWAYS	0xe0000000
+
+#endif /* __KERNEL__ */
+
+#endif /* __ASSEMBLY__ */
+
+#endif
+