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authorLinus Torvalds <torvalds@linux-foundation.org>2010-08-05 09:03:46 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-05 09:03:46 -0700
commitcdd854bc42b5e6c79bbbc40c6600d995ffe6e747 (patch)
tree18c4dcc07bbb8aeb2b23bc812cd60cc293f36cd8 /arch/powerpc/include/asm/hw_breakpoint.h
parentbbc4fd12a635492ad9d12bb418124fa2d5f0d734 (diff)
parent42a0ae2282b512d1a8f6f020327f5f7b8f31a5ea (diff)
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (79 commits) powerpc/8xx: Add support for the MPC8xx based boards from TQC powerpc/85xx: Introduce support for the Freescale P1022DS reference board powerpc/85xx: Adding DTS for the STx GP3-SSA MPC8555 board powerpc/85xx: Change deprecated binding for 85xx-based boards powerpc/tqm85xx: add a quirk for ti1520 PCMCIA bridge powerpc/tqm85xx: update PCI interrupt-map attribute powerpc/mpc8308rdb: support for MPC8308RDB board from Freescale powerpc/fsl_pci: add quirk for mpc8308 pcie bridge powerpc/85xx: Cleanup QE initialization for MPC85xxMDS boards powerpc/85xx: Fix booting for P1021MDS boards powerpc/85xx: Fix SWIOTLB initalization for MPC85xxMDS boards powerpc/85xx: kexec for SMP 85xx BookE systems powerpc/5200/i2c: improve i2c bus error recovery of/xilinxfb: update tft compatible versions powerpc/fsl-diu-fb: Support setting display mode using EDID powerpc/5121: doc/dts-bindings: update doc of FSL DIU bindings powerpc/5121: shared DIU framebuffer support powerpc/5121: move fsl-diu-fb.h to include/linux powerpc/5121: fsl-diu-fb: fix issue with re-enabling DIU area descriptor powerpc/512x: add clock structure for Video-IN (VIU) unit ...
Diffstat (limited to 'arch/powerpc/include/asm/hw_breakpoint.h')
-rw-r--r--arch/powerpc/include/asm/hw_breakpoint.h74
1 files changed, 74 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/hw_breakpoint.h b/arch/powerpc/include/asm/hw_breakpoint.h
new file mode 100644
index 000000000000..1c33ec17ca36
--- /dev/null
+++ b/arch/powerpc/include/asm/hw_breakpoint.h
@@ -0,0 +1,74 @@
+/*
+ * PowerPC BookIII S hardware breakpoint definitions
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright 2010, IBM Corporation.
+ * Author: K.Prasad <prasad@linux.vnet.ibm.com>
+ *
+ */
+
+#ifndef _PPC_BOOK3S_64_HW_BREAKPOINT_H
+#define _PPC_BOOK3S_64_HW_BREAKPOINT_H
+
+#ifdef __KERNEL__
+#ifdef CONFIG_HAVE_HW_BREAKPOINT
+
+struct arch_hw_breakpoint {
+ bool extraneous_interrupt;
+ u8 len; /* length of the target data symbol */
+ int type;
+ unsigned long address;
+};
+
+#include <linux/kdebug.h>
+#include <asm/reg.h>
+#include <asm/system.h>
+
+struct perf_event;
+struct pmu;
+struct perf_sample_data;
+
+#define HW_BREAKPOINT_ALIGN 0x7
+/* Maximum permissible length of any HW Breakpoint */
+#define HW_BREAKPOINT_LEN 0x8
+
+extern int hw_breakpoint_slots(int type);
+extern int arch_bp_generic_fields(int type, int *gen_bp_type);
+extern int arch_check_bp_in_kernelspace(struct perf_event *bp);
+extern int arch_validate_hwbkpt_settings(struct perf_event *bp);
+extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused,
+ unsigned long val, void *data);
+int arch_install_hw_breakpoint(struct perf_event *bp);
+void arch_uninstall_hw_breakpoint(struct perf_event *bp);
+void hw_breakpoint_pmu_read(struct perf_event *bp);
+extern void flush_ptrace_hw_breakpoint(struct task_struct *tsk);
+
+extern struct pmu perf_ops_bp;
+extern void ptrace_triggered(struct perf_event *bp, int nmi,
+ struct perf_sample_data *data, struct pt_regs *regs);
+static inline void hw_breakpoint_disable(void)
+{
+ set_dabr(0);
+}
+extern void thread_change_pc(struct task_struct *tsk, struct pt_regs *regs);
+
+#else /* CONFIG_HAVE_HW_BREAKPOINT */
+static inline void hw_breakpoint_disable(void) { }
+static inline void thread_change_pc(struct task_struct *tsk,
+ struct pt_regs *regs) { }
+#endif /* CONFIG_HAVE_HW_BREAKPOINT */
+#endif /* __KERNEL__ */
+#endif /* _PPC_BOOK3S_64_HW_BREAKPOINT_H */