Signed-off-by: Richard Henderson <r...@twiddle.net>
---
target-alpha/helper.h | 1 +
target-alpha/op_helper.c | 10 ++++++++++
target-alpha/translate.c | 5 +++++
3 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/target-alpha/helper.h b/target-alpha/helper.h
index 2dec57e..c352c24 100644
--- a/target-alpha/helper.h
+++ b/target-alpha/helper.h
@@ -113,6 +113,7 @@ DEF_HELPER_2(stq_c_phys, i64, i64, i64)
DEF_HELPER_FLAGS_0(tbia, TCG_CALL_CONST, void)
DEF_HELPER_FLAGS_1(tbis, TCG_CALL_CONST, void, i64)
+DEF_HELPER_1(halt, void, i64);
#endif
#include "def-helper.h"
diff --git a/target-alpha/op_helper.c b/target-alpha/op_helper.c
index d332719..80656f5 100644
--- a/target-alpha/op_helper.c
+++ b/target-alpha/op_helper.c
@@ -21,6 +21,7 @@
#include "host-utils.h"
#include "softfloat.h"
#include "helper.h"
+#include "sysemu.h"
#include "qemu-timer.h"
/*****************************************************************************/
@@ -1215,6 +1216,15 @@ void helper_tbis(uint64_t p)
{
tlb_flush_page(env, p);
}
+
+void helper_halt(uint64_t restart)
+{
+ if (restart) {
+ qemu_system_reset_request();
+ } else {
+ qemu_system_shutdown_request();
+ }
+}
#endif
/*****************************************************************************/
diff --git a/target-alpha/translate.c b/target-alpha/translate.c
index 7b976be..9edcd74 100644
--- a/target-alpha/translate.c
+++ b/target-alpha/translate.c
@@ -1649,6 +1649,11 @@ static ExitStatus gen_mtpr(DisasContext *ctx, int rb,
int regno)
tcg_gen_st32_i64(tmp, cpu_env, offsetof(CPUState, halted));
return gen_excp(ctx, EXCP_HLT, 0);
+ case 252:
+ /* HALT */
+ gen_helper_halt(tmp);
+ return EXIT_PC_STALE;
+
default:
/* The basic registers are data only, and unknown registers
are read-zero, write-ignore. */
--
1.7.4.4
