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semihosting: create SemihostingConfig structure and semihost.h

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Remove semihosting_enabled and semihosting_target and replace them with
SemihostingConfig structure containing equivalent fields. The structure
is defined in vl.c where it is actually set.

Also introduce separate header file include/exec/semihost.h allowing to
access semihosting config related stuff from target specific semihosting
code.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1434643256-16858-2-git-send-email-leon.alrae@imgtec.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Leon Alrae 2015-06-19 14:17:45 +01:00 • committed by Peter Maydell
parent b58850e79d
commit cfe67cef48
9 changed files with 87 additions and 28 deletions
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6
include/exec/gdbstub.h
View file

@ -95,10 +95,4 @@ extern bool gdb_has_xml;
/* in gdbstub-xml.c, generated by scripts/feature_to_c.sh */
extern const char *const xml_builtin[][2];
/* Command line option defining whether semihosting should go via gdb or not */
extern int semihosting_target;
#define SEMIHOSTING_TARGET_AUTO 0
#define SEMIHOSTING_TARGET_NATIVE 1
#define SEMIHOSTING_TARGET_GDB 2
#endif

44
include/exec/semihost.h Normal file
View file

@ -0,0 +1,44 @@
/*
* Semihosting support
*
* Copyright (c) 2015 Imagination Technologies
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef SEMIHOST_H
#define SEMIHOST_H
typedef enum SemihostingTarget {
SEMIHOSTING_TARGET_AUTO = 0,
SEMIHOSTING_TARGET_NATIVE,
SEMIHOSTING_TARGET_GDB
} SemihostingTarget;
#ifdef CONFIG_USER_ONLY
static inline bool semihosting_enabled(void)
{
return true;
}
static inline SemihostingTarget semihosting_get_target(void)
{
return SEMIHOSTING_TARGET_AUTO;
}
#else
bool semihosting_enabled(void);
SemihostingTarget semihosting_get_target(void);
#endif
#endif