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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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5
target-m68k/op_helper.c
View file

@ -19,6 +19,7 @@
#include "cpu.h"
#include "exec/helper-proto.h"
#include "exec/cpu_ldst.h"
#include "exec/semihost.h"
#if defined(CONFIG_USER_ONLY)
@ -33,8 +34,6 @@ static inline void do_interrupt_m68k_hardirq(CPUM68KState *env)
#else
extern int semihosting_enabled;
/* Try to fill the TLB and return an exception if error. If retaddr is
NULL, it means that the function was called in C code (i.e. not
from generated code or from helper.c) */
@ -85,7 +84,7 @@ static void do_interrupt_all(CPUM68KState *env, int is_hw)
do_rte(env);
return;
case EXCP_HALT_INSN:
if (semihosting_enabled
if (semihosting_enabled()
&& (env->sr & SR_S) != 0
&& (env->pc & 3) == 0
&& cpu_lduw_code(env, env->pc - 4) == 0x4e71