55 lines
1.9 KiB
C++
55 lines
1.9 KiB
C++
/*
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* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __DEBUG_H__
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#define __DEBUG_H__
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#include <ch.h>
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extern uint32_t __process_stack_base__;
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extern uint32_t __process_stack_end__;
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#define CRT0_STACKS_FILL_PATTERN 0x55555555
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inline uint32_t get_free_stack_space() {
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uint32_t* p;
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for (p = &__process_stack_base__; *p == CRT0_STACKS_FILL_PATTERN && p < &__process_stack_end__; p++)
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;
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auto stack_space_left = p - &__process_stack_base__;
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return stack_space_left;
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}
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/* Executes a breakpoint only when a debugger is attached. */
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#define HALT_IF_DEBUGGING() \
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do { \
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if ((*(volatile uint32_t*)0xE000EDF0) & (1 << 0)) { \
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__asm__ __volatile__("bkpt 1"); \
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} \
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} while (0)
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/* Stops execution until a debugger is attached. */
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#define HALT_UNTIL_DEBUGGING() \
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while (!((*(volatile uint32_t*)0xE000EDF0) & (1 << 0))) { \
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} \
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__asm__ __volatile__("bkpt 1")
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#endif /*__DEBUG_H__*/
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