@@ -80,6 +80,7 @@ DEF_HELPER_FLAGS_4(fmpynfadd_d, TCG_CALL_NO_RWG, i64, env, i64, i64, i64)
DEF_HELPER_FLAGS_0(read_interval_timer, TCG_CALL_NO_RWG, tr)
#ifndef CONFIG_USER_ONLY
+DEF_HELPER_1(shutdown, noreturn, env)
DEF_HELPER_1(rfi, void, env)
DEF_HELPER_1(rfi_r, void, env)
DEF_HELPER_FLAGS_2(write_interval_timer, TCG_CALL_NO_RWG, void, env, tr)
@@ -22,6 +22,7 @@
#include "exec/exec-all.h"
#include "exec/helper-proto.h"
#include "exec/cpu_ldst.h"
+#include "sysemu/sysemu.h"
#include "qemu/timer.h"
@@ -639,6 +640,12 @@ void HELPER(write_interval_timer)(CPUHPPAState *env, target_ureg val)
timer_mod(cpu->alarm_timer, timeout);
}
+void HELPER(shutdown)(CPUHPPAState *env)
+{
+ qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
+ helper_excp(env, EXCP_HLT);
+}
+
target_ureg HELPER(swap_system_mask)(CPUHPPAState *env, target_ureg nsm)
{
target_ulong psw = env->psw;
@@ -2293,6 +2293,14 @@ static DisasJumpType trans_rfi(DisasContext *ctx, uint32_t insn,
/* Exit the TB to recognize new interrupts. */
return nullify_end(ctx, DISAS_NORETURN);
}
+
+static DisasJumpType gen_hlt(DisasContext *ctx)
+{
+ CHECK_MOST_PRIVILEGED(EXCP_PRIV_OPR);
+ nullify_over(ctx);
+ gen_helper_shutdown(cpu_env);
+ return nullify_end(ctx, DISAS_NORETURN);
+}
#endif /* !CONFIG_USER_ONLY */
static const DisasInsn table_system[] = {
@@ -4510,7 +4518,15 @@ static DisasJumpType translate_one(DisasContext *ctx, uint32_t insn)
case 0x15: /* unassigned */
case 0x1D: /* unassigned */
case 0x37: /* unassigned */
- case 0x3F: /* unassigned */
+ break;
+ case 0x3F:
+#ifndef CONFIG_USER_ONLY
+ /* Unassigned, but use as system-halt. */
+ if (insn == 0xffffffff) {
+ return gen_hlt(ctx);
+ }
+#endif
+ break;
default:
break;
}
Real hardware would use an external device to control the power. But for the moment let's invent an instruction in reserved space. Suggested-by: Helge Deller <deller@gmx.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- target/hppa/helper.h | 1 + target/hppa/op_helper.c | 7 +++++++ target/hppa/translate.c | 18 +++++++++++++++++- 3 files changed, 25 insertions(+), 1 deletion(-) -- 2.14.3