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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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8
gdbstub.c
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@ -40,6 +40,7 @@
#include "cpu.h"
#include "qemu/sockets.h"
#include "sysemu/kvm.h"
#include "exec/semihost.h"
#ifdef CONFIG_USER_ONLY
#define GDB_ATTACHED "0"
@ -323,8 +324,6 @@ static GDBState *gdbserver_state;
bool gdb_has_xml;
int semihosting_target = SEMIHOSTING_TARGET_AUTO;
#ifdef CONFIG_USER_ONLY
/* XXX: This is not thread safe. Do we care? */
static int gdbserver_fd = -1;
@ -362,10 +361,11 @@ static enum {
/* Decide if either remote gdb syscalls or native file IO should be used. */
int use_gdb_syscalls(void)
{
if (semihosting_target == SEMIHOSTING_TARGET_NATIVE) {
SemihostingTarget target = semihosting_get_target();
if (target == SEMIHOSTING_TARGET_NATIVE) {
/* -semihosting-config target=native */
return false;
} else if (semihosting_target == SEMIHOSTING_TARGET_GDB) {
} else if (target == SEMIHOSTING_TARGET_GDB) {
/* -semihosting-config target=gdb */
return true;
}