ce3266c047
Implement intelligent backtracing by searching for stack frame creation, and emitting only return addresses. Use print_hex_dump() to display the entire binary kernel stack. Limitation: MMU kernels are not currently able to trace beyond a system trap (interrupt, syscall, etc.). It is the intent of this patch to provide infrastructure that can be extended to add this capability later. Changes from V1: * Removed checks in find_frame_creation() that prevented location of the frame creation instruction in heavily optimized code * Various formatting/commenting/file location tweaks per review comments * Dropped Kconfig option to enable STACKTRACE as something logically separate Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
30 lines
719 B
C
30 lines
719 B
C
/*
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* Backtrace support for Microblaze
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*
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* Copyright (C) 2010 Digital Design Corporation
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#ifndef __MICROBLAZE_UNWIND_H
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#define __MICROBLAZE_UNWIND_H
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struct stack_trace;
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struct trap_handler_info {
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unsigned long start_addr;
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unsigned long end_addr;
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const char *trap_name;
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};
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extern struct trap_handler_info microblaze_trap_handlers;
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extern const char _hw_exception_handler;
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extern const char ex_handler_unhandled;
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void microblaze_unwind(struct task_struct *task, struct stack_trace *trace);
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#endif /* __MICROBLAZE_UNWIND_H */
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