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-rw-r--r--arch/arm/include/asm/proc-armv/ptrace.h109
1 files changed, 109 insertions, 0 deletions
diff --git a/arch/arm/include/asm/proc-armv/ptrace.h b/arch/arm/include/asm/proc-armv/ptrace.h
new file mode 100644
index 0000000..79cc644
--- /dev/null
+++ b/arch/arm/include/asm/proc-armv/ptrace.h
@@ -0,0 +1,109 @@
+/*
+ * 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