1 files changed, 43 insertions, 87 deletions

diff --git a/arch/mips/include/asm/ptrace.h b/arch/mips/include/asm/ptrace.h
index 9f1b8dba2c8..7e6e682aece 100644
--- a/arch/mips/include/asm/ptrace.h
+++ b/arch/mips/include/asm/ptrace.h
@@ -9,18 +9,12 @@
 #ifndef _ASM_PTRACE_H
 #define _ASM_PTRACE_H
 
-/* 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
+
+#include <linux/compiler.h>
+#include <linux/linkage.h>
+#include <linux/types.h>
+#include <asm/isadep.h>
+#include <uapi/asm/ptrace.h>
 
 /*
  * This struct defines the way the registers are stored on the stack during a
@@ -45,79 +39,11 @@ struct pt_regs {
 	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 */
 #ifdef CONFIG_CPU_CAVIUM_OCTEON
-	unsigned long long mpl[3];        /* MTM{0,1,2} */
-	unsigned long long mtp[3];        /* MTP{0,1,2} */
+	unsigned long long mpl[3];	  /* MTM{0,1,2} */
+	unsigned long long mtp[3];	  /* MTP{0,1,2} */
 #endif
-} __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 {
-	unsigned int watchlo[8];
-	/* Lower 16 bits of watchhi. */
-	unsigned short 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.
-	 */
-	unsigned short watch_masks[8];
-	/* The number of valid watch register pairs.  */
-	unsigned int num_valid;
-} __attribute__((aligned(8)));
-
-struct mips64_watch_regs {
-	unsigned long long watchlo[8];
-	unsigned short watchhi[8];
-	unsigned short watch_masks[8];
-	unsigned int num_valid;
-} __attribute__((aligned(8)));
-
-struct pt_watch_regs {
-	enum pt_watch_style style;
-	union {
-		struct mips32_watch_regs mips32;
-		struct mips64_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 <linux/types.h>
-#include <asm/isadep.h>
+} __aligned(8);
 
 struct task_struct;
 
@@ -137,13 +63,26 @@ extern int ptrace_set_watch_regs(struct task_struct *child,
  */
 #define user_mode(regs) (((regs)->cp0_status & KU_MASK) == KU_USER)
 
-#define regs_return_value(_regs) ((_regs)->regs[2])
+static inline int is_syscall_success(struct pt_regs *regs)
+{
+	return !regs->regs[7];
+}
+
+static inline long regs_return_value(struct pt_regs *regs)
+{
+	if (is_syscall_success(regs))
+		return regs->regs[2];
+	else
+		return -regs->regs[2];
+}
+
 #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 asmlinkage long syscall_trace_enter(struct pt_regs *regs, long syscall);
+extern asmlinkage void syscall_trace_leave(struct pt_regs *regs);
 
-extern NORET_TYPE void die(const char *, struct pt_regs *) ATTRIB_NORET;
+extern void die(const char *, struct pt_regs *) __noreturn;
 
 static inline void die_if_kernel(const char *str, struct pt_regs *regs)
 {
@@ -151,6 +90,23 @@ static inline void die_if_kernel(const char *str, struct pt_regs *regs)
 		die(str, regs);
 }
 
-#endif
+#define current_pt_regs()						\
+({									\
+	unsigned long sp = (unsigned long)__builtin_frame_address(0);	\
+	(struct pt_regs *)((sp | (THREAD_SIZE - 1)) + 1 - 32) - 1;	\
+})
+
+/* Helpers for working with the user stack pointer */
+
+static inline unsigned long user_stack_pointer(struct pt_regs *regs)
+{
+	return regs->regs[29];
+}
+
+static inline void user_stack_pointer_set(struct pt_regs *regs,
+	unsigned long val)
+{
+	regs->regs[29] = val;
+}
 
 #endif /* _ASM_PTRACE_H */