From 7f0e93060e720149bb59023d608a67cfc21542b1 Mon Sep 17 00:00:00 2001 From: Rudolf Marek Date: Fri, 2 Sep 2011 23:23:41 +0200 Subject: Add support for the tracing infastructure in coreboot. The compiler is forced to emmit special functions on every entry/exit of the function. Add a compile time option to support it. Function entries will be printed in the console. The CONFIG_TRACE has more documentation. Patch for userspace tools will follow. Change-Id: I2cbeb3f104892b034c8756f86ed05bf71187c3f3 Signed-off-by: Rudolf Marek Reviewed-on: http://review.coreboot.org/178 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer --- src/include/trace.h | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 src/include/trace.h (limited to 'src/include/trace.h') diff --git a/src/include/trace.h b/src/include/trace.h new file mode 100644 index 0000000000..ff5b6c2531 --- /dev/null +++ b/src/include/trace.h @@ -0,0 +1,54 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 Rudolf Marek + * + * 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 of the License. + * + * 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. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef __TRACE_H +#define __TRACE_H + + +#ifdef __PRE_RAM__ + +#define DISABLE_TRACE +#define ENABLE_TRACE +#define DISABLE_TRACE_ON_FUNCTION + +#else /* !__PRE_RAM__ */ + +#if CONFIG_TRACE + +void __cyg_profile_func_enter( void *, void * ) + __attribute__ ((no_instrument_function)); + +void __cyg_profile_func_exit( void *, void * ) + __attribute__ ((no_instrument_function)); + +extern volatile int trace_dis; + +#define DISABLE_TRACE do { trace_dis = 1; } while (0); +#define ENABLE_TRACE do { trace_dis = 0; } while (0); +#define DISABLE_TRACE_ON_FUNCTION __attribute__ ((no_instrument_function)); + +#else /* !CONFIG_TRACE */ + +#define DISABLE_TRACE +#define ENABLE_TRACE +#define DISABLE_TRACE_ON_FUNCTION + +#endif +#endif +#endif -- cgit v1.2.3