1 files changed, 154 insertions, 0 deletions

diff --git a/arch/mips/include/asm/ptrace.h b/arch/mips/include/asm/ptrace.h
new file mode 100644
index 000000000000..9c22571b160d
--- /dev/null
+++ b/arch/mips/include/asm/ptrace.h
@@ -0,0 +1,154 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1994, 95, 96, 97, 98, 99, 2000 by Ralf Baechle
+ * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
+ */
+#ifndef _ASM_PTRACE_H
+#define _ASM_PTRACE_H
+
+#ifdef CONFIG_64BIT
+#define __ARCH_WANT_COMPAT_SYS_PTRACE
+#endif
+
+/* 0 - 31 are integer registers, 32 - 63 are fp registers.  */
+#define FPR_BASE        32
+#define PC              64
+#define CAUSE           65
+#define BADVADDR        66
+#define MMHI            67
+#define MMLO            68
+#define FPC_CSR         69
+#define FPC_EIR         70
+#define DSP_BASE        71              /* 3 more hi / lo register pairs */
+#define DSP_CONTROL     77
+#define ACX             78
+
+/*
+ * This struct defines the way the registers are stored on the stack during a
+ * system call/exception. As usual the registers k0/k1 aren't being saved.
+ */
+struct pt_regs {
+#ifdef CONFIG_32BIT
+        /* Pad bytes for argument save space on the stack. */
+        unsigned long pad0[6];
+#endif
+
+        /* Saved main processor registers. */
+        unsigned long regs[32];
+
+        /* Saved special registers. */
+        unsigned long cp0_status;
+        unsigned long hi;
+        unsigned long lo;
+#ifdef CONFIG_CPU_HAS_SMARTMIPS
+        unsigned long acx;
+#endif
+        unsigned long cp0_badvaddr;
+        unsigned long cp0_cause;
+        unsigned long cp0_epc;
+#ifdef CONFIG_MIPS_MT_SMTC
+        unsigned long cp0_tcstatus;
+#endif /* CONFIG_MIPS_MT_SMTC */
+} __attribute__ ((aligned (8)));
+
+/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
+#define PTRACE_GETREGS          12
+#define PTRACE_SETREGS          13
+#define PTRACE_GETFPREGS                14
+#define PTRACE_SETFPREGS                15
+/* #define PTRACE_GETFPXREGS            18 */
+/* #define PTRACE_SETFPXREGS            19 */
+
+#define PTRACE_OLDSETOPTIONS    21
+
+#define PTRACE_GET_THREAD_AREA  25
+#define PTRACE_SET_THREAD_AREA  26
+
+/* Calls to trace a 64bit program from a 32bit program.  */
+#define PTRACE_PEEKTEXT_3264    0xc0
+#define PTRACE_PEEKDATA_3264    0xc1
+#define PTRACE_POKETEXT_3264    0xc2
+#define PTRACE_POKEDATA_3264    0xc3
+#define PTRACE_GET_THREAD_AREA_3264     0xc4
+
+/* Read and write watchpoint registers.  */
+enum pt_watch_style {
+        pt_watch_style_mips32,
+        pt_watch_style_mips64
+};
+struct mips32_watch_regs {
+        uint32_t watchlo[8];
+        /* Lower 16 bits of watchhi. */
+        uint16_t watchhi[8];
+        /* Valid mask and I R W bits.
+         * bit 0 -- 1 if W bit is usable.
+         * bit 1 -- 1 if R bit is usable.
+         * bit 2 -- 1 if I bit is usable.
+         * bits 3 - 11 -- Valid watchhi mask bits.
+         */
+        uint16_t watch_masks[8];
+        /* The number of valid watch register pairs.  */
+        uint32_t num_valid;
+} __attribute__((aligned(8)));
+
+struct mips64_watch_regs {
+        uint64_t watchlo[8];
+        uint16_t watchhi[8];
+        uint16_t watch_masks[8];
+        uint32_t num_valid;
+} __attribute__((aligned(8)));
+
+struct pt_watch_regs {
+        enum pt_watch_style style;
+        union {
+                struct mips32_watch_regs mips32;
+                struct mips32_watch_regs mips64;
+        };
+};
+
+#define PTRACE_GET_WATCH_REGS   0xd0
+#define PTRACE_SET_WATCH_REGS   0xd1
+
+#ifdef __KERNEL__
+
+#include <linux/compiler.h>
+#include <linux/linkage.h>
+#include <asm/isadep.h>
+
+struct task_struct;
+
+extern int ptrace_getregs(struct task_struct *child, __s64 __user *data);
+extern int ptrace_setregs(struct task_struct *child, __s64 __user *data);
+
+extern int ptrace_getfpregs(struct task_struct *child, __u32 __user *data);
+extern int ptrace_setfpregs(struct task_struct *child, __u32 __user *data);
+
+extern int ptrace_get_watch_regs(struct task_struct *child,
+        struct pt_watch_regs __user *addr);
+extern int ptrace_set_watch_regs(struct task_struct *child,
+        struct pt_watch_regs __user *addr);
+
+/*
+ * Does the process account for user or for system time?
+ */
+#define user_mode(regs) (((regs)->cp0_status & KU_MASK) == KU_USER)
+
+#define instruction_pointer(regs) ((regs)->cp0_epc)
+#define profile_pc(regs) instruction_pointer(regs)
+
+extern asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit);
+
+extern NORET_TYPE void die(const char *, const struct pt_regs *) ATTRIB_NORET;
+
+static inline void die_if_kernel(const char *str, const struct pt_regs *regs)
+{
+        if (unlikely(!user_mode(regs)))
+                die(str, regs);
+}
+
+#endif
+
+#endif /* _ASM_PTRACE_H */