66 lines
2 KiB
C
66 lines
2 KiB
C
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2022 Aidan MacDonald
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef BACKTRACE_MIPSUNWINDER_H
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#define BACKTRACE_MIPSUNWINDER_H
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/*#define MIPSUNWINDER_DEBUG*/
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#include <stdint.h>
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enum {
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MIPSBT_RA,
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MIPSBT_NREG,
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};
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struct mips_bt_context {
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void* pc;
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void* sp;
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int depth;
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uint32_t valid;
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uint32_t reg[MIPSBT_NREG];
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#ifdef MIPSUNWINDER_DEBUG
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void(*debugf)(void*, const char*, ...);
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void* debug_arg;
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#endif
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};
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int mips_bt_step(struct mips_bt_context* ctx);
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void mips_bt_start(struct mips_bt_context* ctx);
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#ifdef MIPSUNWINDER_DEBUG
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# define mips_bt_debug(ctx, ...) \
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do { struct mips_bt_context* __ctx = ctx; \
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if(__ctx->debugf) \
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__ctx->debugf(__ctx->debug_arg, __VA_ARGS__);\
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} while(0)
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#else
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# define mips_bt_debug(...) do { } while(0)
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#endif
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/* NOTE: ignores pcAddr and spAddr, backtrace starts from caller */
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void rb_backtrace(int pcAddr, int spAddr, unsigned* line);
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/* given struct mips_bt_context argument, print stack traceback */
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void rb_backtrace_ctx(void* arg, unsigned* line);
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#endif /* BACKTRACE_MIPSUNWINDER_H */
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