[ubicom32]: move new files out from platform support patch

[openwrt/svn-archive/archive.git] / target / linux / ubicom32 / files / arch / ubicom32 / include / asm / stacktrace.h

diff --git a/target/linux/ubicom32/files/arch/ubicom32/include/asm/stacktrace.h b/target/linux/ubicom32/files/arch/ubicom32/include/asm/stacktrace.h
new file mode 100644 (file)
index 0000000..f278ac7
--- /dev/null
+++ b/target/linux/ubicom32/files/arch/ubicom32/include/asm/stacktrace.h
@@ -0,0 +1,72 @@
+/*
+ * arch/ubicom32/include/asm/stacktrace.h
+ *   Stacktrace functions for the Ubicom32 architecture.
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * The Ubicom32 Linux Kernel Port 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.
+ *
+ * The Ubicom32 Linux Kernel Port 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 the Ubicom32 Linux Kernel Port.  If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Ubicom32 implementation derived from (with many thanks):
+ *   arch/m68knommu
+ *   arch/blackfin
+ *   arch/parisc
+ */
+#ifndef _ASM_UBICOM32_STACKTRACE_H
+#define _ASM_UBICOM32_STACKTRACE_H
+
+#define between(a, b, c)       (( \
+                       ((unsigned long) a) >= ((unsigned long) b)) && \
+                       (((unsigned long)a) <= ((unsigned long)c)))
+
+/*
+ * These symbols are filled in by the linker.
+ */
+extern unsigned long _stext;
+extern unsigned long _etext;
+
+/* OCM text goes from __ocm_text_run_begin to __data_begin */
+extern unsigned long __ocm_text_run_begin;
+extern unsigned long __data_begin;
+
+/* Account for OCM case - see stacktrace.c maybe combine(also trap.c) */
+/*
+ * ubicom32_is_kernel()
+ *
+ *     Check to see if the given address belongs to the kernel.
+ * NOMMU does not permit any other means.
+ */
+static inline int ubicom32_is_kernel(unsigned long addr)
+{
+       int is_kernel = between(addr, &_stext, &_etext) || \
+                       between(addr, &__ocm_text_run_begin, &__data_begin);
+
+#ifdef CONFIG_MODULES
+       if (!is_kernel)
+               is_kernel = is_module_address(addr);
+#endif
+       return is_kernel;
+}
+
+extern unsigned long stacktrace_iterate(
+                               unsigned long **trace,
+                               unsigned long stext, unsigned long etext,
+                               unsigned long ocm_stext, unsigned long ocm_etext,
+                               unsigned long sstack, unsigned long estack);
+#ifdef CONFIG_STACKTRACE
+void stacktrace_save_entries(struct task_struct *tsk, struct stack_trace *trace, unsigned long sp);
+#endif
+#endif /* _ASM_UBICOM32_STACKTRACE_H */