File-copy from v4.4.100
This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Please refer to that tree for all history prior to this point.
Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/arch/sparc/include/asm/ptrace.h b/arch/sparc/include/asm/ptrace.h
new file mode 100644
index 0000000..bac6a94
--- /dev/null
+++ b/arch/sparc/include/asm/ptrace.h
@@ -0,0 +1,126 @@
+#ifndef __SPARC_PTRACE_H
+#define __SPARC_PTRACE_H
+
+#include <uapi/asm/ptrace.h>
+
+#if defined(__sparc__) && defined(__arch64__)
+#ifndef __ASSEMBLY__
+
+#include <linux/threads.h>
+#include <asm/switch_to.h>
+
+static inline int pt_regs_trap_type(struct pt_regs *regs)
+{
+ return regs->magic & 0x1ff;
+}
+
+static inline bool pt_regs_is_syscall(struct pt_regs *regs)
+{
+ return (regs->tstate & TSTATE_SYSCALL);
+}
+
+static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
+{
+ return (regs->tstate &= ~TSTATE_SYSCALL);
+}
+
+#define arch_ptrace_stop_needed(exit_code, info) \
+({ flush_user_windows(); \
+ get_thread_wsaved() != 0; \
+})
+
+#define arch_ptrace_stop(exit_code, info) \
+ synchronize_user_stack()
+
+#define current_pt_regs() \
+ ((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
+
+struct global_reg_snapshot {
+ unsigned long tstate;
+ unsigned long tpc;
+ unsigned long tnpc;
+ unsigned long o7;
+ unsigned long i7;
+ unsigned long rpc;
+ struct thread_info *thread;
+ unsigned long pad1;
+};
+
+struct global_pmu_snapshot {
+ unsigned long pcr[4];
+ unsigned long pic[4];
+};
+
+union global_cpu_snapshot {
+ struct global_reg_snapshot reg;
+ struct global_pmu_snapshot pmu;
+};
+
+extern union global_cpu_snapshot global_cpu_snapshot[NR_CPUS];
+
+#define force_successful_syscall_return() set_thread_noerror(1)
+#define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV))
+#define instruction_pointer(regs) ((regs)->tpc)
+#define instruction_pointer_set(regs, val) ((regs)->tpc = (val))
+#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
+static inline int is_syscall_success(struct pt_regs *regs)
+{
+ return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY));
+}
+
+static inline long regs_return_value(struct pt_regs *regs)
+{
+ return regs->u_regs[UREG_I0];
+}
+#ifdef CONFIG_SMP
+unsigned long profile_pc(struct pt_regs *);
+#else
+#define profile_pc(regs) instruction_pointer(regs)
+#endif
+#else /* __ASSEMBLY__ */
+#endif /* __ASSEMBLY__ */
+#else /* (defined(__sparc__) && defined(__arch64__)) */
+#ifndef __ASSEMBLY__
+#include <asm/switch_to.h>
+
+static inline bool pt_regs_is_syscall(struct pt_regs *regs)
+{
+ return (regs->psr & PSR_SYSCALL);
+}
+
+static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
+{
+ return (regs->psr &= ~PSR_SYSCALL);
+}
+
+#define arch_ptrace_stop_needed(exit_code, info) \
+({ flush_user_windows(); \
+ current_thread_info()->w_saved != 0; \
+})
+
+#define arch_ptrace_stop(exit_code, info) \
+ synchronize_user_stack()
+
+#define current_pt_regs() \
+ ((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
+
+#define user_mode(regs) (!((regs)->psr & PSR_PS))
+#define instruction_pointer(regs) ((regs)->pc)
+#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
+unsigned long profile_pc(struct pt_regs *);
+#else /* (!__ASSEMBLY__) */
+#endif /* (!__ASSEMBLY__) */
+#endif /* (defined(__sparc__) && defined(__arch64__)) */
+#define STACK_BIAS 2047
+
+/* global_reg_snapshot offsets */
+#define GR_SNAP_TSTATE 0x00
+#define GR_SNAP_TPC 0x08
+#define GR_SNAP_TNPC 0x10
+#define GR_SNAP_O7 0x18
+#define GR_SNAP_I7 0x20
+#define GR_SNAP_RPC 0x28
+#define GR_SNAP_THREAD 0x30
+#define GR_SNAP_PAD1 0x38
+
+#endif /* !(__SPARC_PTRACE_H) */