| /* |
| * 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 */ |