This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / asm-powerpc / tracehook.h

diff --git a/include/asm-powerpc/tracehook.h b/include/asm-powerpc/tracehook.h
new file mode 100644 (file)
index 0000000..2cf5dc3
--- /dev/null
+++ b/include/asm-powerpc/tracehook.h
@@ -0,0 +1,80 @@
+/*
+ * Tracing hooks, PowerPC CPU support
+ */
+
+#ifndef _ASM_TRACEHOOK_H
+#define _ASM_TRACEHOOK_H       1
+
+#include <linux/sched.h>
+#include <asm/ptrace.h>
+
+/*
+ * See linux/tracehook.h for the descriptions of what these need to do.
+ */
+
+#define ARCH_HAS_SINGLE_STEP   (1)
+
+static inline void tracehook_enable_single_step(struct task_struct *task)
+{
+       struct pt_regs *regs = task->thread.regs;
+       if (regs != NULL) {
+#if defined(CONFIG_PPC32) && (defined(CONFIG_40x) || defined(CONFIG_BOOKE))
+               task->thread.dbcr0 = DBCR0_IDM | DBCR0_IC;
+               regs->msr |= MSR_DE;
+#else
+               regs->msr |= MSR_SE;
+#endif
+       }
+       set_tsk_thread_flag(task, TIF_SINGLESTEP);
+}
+
+static inline void tracehook_disable_single_step(struct task_struct *task)
+{
+       struct pt_regs *regs = task->thread.regs;
+       if (regs != NULL) {
+#if defined(CONFIG_PPC32) && (defined(CONFIG_40x) || defined(CONFIG_BOOKE))
+               task->thread.dbcr0 = 0;
+               regs->msr &= ~MSR_DE;
+#else
+               regs->msr &= ~MSR_SE;
+#endif
+       }
+       clear_tsk_thread_flag(task, TIF_SINGLESTEP);
+}
+
+static inline int tracehook_single_step_enabled(struct task_struct *tsk)
+{
+       return test_tsk_thread_flag(tsk, TIF_SINGLESTEP);
+}
+
+static inline void tracehook_enable_syscall_trace(struct task_struct *tsk)
+{
+       set_tsk_thread_flag(tsk, TIF_SYSCALL_TRACE);
+}
+
+static inline void tracehook_disable_syscall_trace(struct task_struct *tsk)
+{
+       clear_tsk_thread_flag(tsk, TIF_SYSCALL_TRACE);
+}
+
+static inline void tracehook_abort_syscall(struct pt_regs *regs)
+{
+       regs->orig_gpr3 = -1L;
+}
+
+
+extern const struct utrace_regset_view utrace_ppc_native_view;
+static inline const struct utrace_regset_view *
+utrace_native_view(struct task_struct *tsk)
+{
+#ifdef CONFIG_PPC64
+       extern const struct utrace_regset_view utrace_ppc32_view;
+
+       if (test_tsk_thread_flag(tsk, TIF_32BIT))
+               return &utrace_ppc32_view;
+#endif
+       return &utrace_ppc_native_view;
+}
+
+
+#endif