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Diffstat (limited to 'kernel/arch/tile/include/asm/stack.h')
| -rw-r--r-- | kernel/arch/tile/include/asm/stack.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/kernel/arch/tile/include/asm/stack.h b/kernel/arch/tile/include/asm/stack.h new file mode 100644 index 000000000..0e9d382a2 --- /dev/null +++ b/kernel/arch/tile/include/asm/stack.h @@ -0,0 +1,74 @@ +/* + * Copyright 2010 Tilera Corporation. All Rights Reserved. + * + * 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, version 2. + * + * 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, GOOD TITLE or + * NON INFRINGEMENT. See the GNU General Public License for + * more details. + */ + +#ifndef _ASM_TILE_STACK_H +#define _ASM_TILE_STACK_H + +#include <linux/types.h> +#include <linux/sched.h> +#include <asm/backtrace.h> +#include <asm/page.h> +#include <hv/hypervisor.h> + +/* Everything we need to keep track of a backtrace iteration */ +struct KBacktraceIterator { + BacktraceIterator it; + struct task_struct *task; /* task we are backtracing */ + int end; /* iteration complete. */ + int new_context; /* new context is starting */ + int profile; /* profiling, so stop on async intrpt */ + int verbose; /* printk extra info (don't want to + * do this for profiling) */ + int is_current; /* backtracing current task */ +}; + +/* Iteration methods for kernel backtraces */ + +/* + * Initialize a KBacktraceIterator from a task_struct, and optionally from + * a set of registers. If the registers are omitted, the process is + * assumed to be descheduled, and registers are read from the process's + * thread_struct and stack. "verbose" means to printk some additional + * information about fault handlers as we pass them on the stack. + */ +extern void KBacktraceIterator_init(struct KBacktraceIterator *kbt, + struct task_struct *, struct pt_regs *); + +/* Initialize iterator based on current stack. */ +extern void KBacktraceIterator_init_current(struct KBacktraceIterator *kbt); + +/* Helper method for above. */ +extern void _KBacktraceIterator_init_current(struct KBacktraceIterator *kbt, + ulong pc, ulong lr, ulong sp, ulong r52); + +/* No more frames? */ +extern int KBacktraceIterator_end(struct KBacktraceIterator *kbt); + +/* Advance to the next frame. */ +extern void KBacktraceIterator_next(struct KBacktraceIterator *kbt); + +/* + * Dump stack given complete register info. Use only from the + * architecture-specific code; show_stack() + * and dump_stack() (in entry.S) are architecture-independent entry points. + */ +extern void tile_show_stack(struct KBacktraceIterator *, int headers); + +/* Dump stack of current process, with registers to seed the backtrace. */ +extern void dump_stack_regs(struct pt_regs *); + +/* Helper method for assembly dump_stack(). */ +extern void _dump_stack(int dummy, ulong pc, ulong lr, ulong sp, ulong r52); + +#endif /* _ASM_TILE_STACK_H */ |