aboutsummaryrefslogtreecommitdiff
path: root/target-m68k/op_helper.c
diff options
context:
space:
mode:
authorpbrook <pbrook@c046a42c-6fe2-441c-8c8c-71466251a162>2007-05-26 15:09:38 +0000
committerpbrook <pbrook@c046a42c-6fe2-441c-8c8c-71466251a162>2007-05-26 15:09:38 +0000
commita87295e8df0923dab9857c1a340d23fe3278a336 (patch)
tree30c629030791710b509b88fceb184766f97743cd /target-m68k/op_helper.c
parent20c9f095c4536e64e60432a5c72fce38e8306cbb (diff)
M68k system mode semihosting.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2861 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-m68k/op_helper.c')
-rw-r--r--target-m68k/op_helper.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/target-m68k/op_helper.c b/target-m68k/op_helper.c
index 7455e31659..f5593eca0c 100644
--- a/target-m68k/op_helper.c
+++ b/target-m68k/op_helper.c
@@ -28,6 +28,8 @@ void do_interrupt(int is_hw)
#else
+extern int semihosting_enabled;
+
#define MMUSUFFIX _mmu
#define GETPC() (__builtin_return_address(0))
@@ -104,6 +106,20 @@ void do_interrupt(int is_hw)
/* Return from an exception. */
do_rte();
return;
+ case EXCP_HALT_INSN:
+ if (semihosting_enabled
+ && (env->sr & SR_S) != 0
+ && (env->pc & 3) == 0
+ && lduw_code(env->pc - 4) == 0x4e71
+ && ldl_code(env->pc) == 0x4e7bf000) {
+ env->pc += 4;
+ do_m68k_semihosting(env, env->dregs[0]);
+ return;
+ }
+ env->halted = 1;
+ env->exception_index = EXCP_HLT;
+ cpu_loop_exit();
+ return;
}
if (env->exception_index >= EXCP_TRAP0
&& env->exception_index <= EXCP_TRAP15) {