X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-powerpc%2Ftracehook.h;fp=include%2Fasm-powerpc%2Ftracehook.h;h=2cf5dc3bc7cf65f739e6e41af2abc3e5cbeae3b6;hb=f05f9504c50ed069377d37f02f22e7a16b5921de;hp=0000000000000000000000000000000000000000;hpb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;p=linux-2.6.git

diff --git a/include/asm-powerpc/tracehook.h b/include/asm-powerpc/tracehook.h
new file mode 100644
index 000000000..2cf5dc3bc
--- /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