From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51235) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eeURj-0004tX-VD for qemu-devel@nongnu.org; Wed, 24 Jan 2018 18:27:12 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eeURi-0001zR-Tn for qemu-devel@nongnu.org; Wed, 24 Jan 2018 18:27:11 -0500 Received: from mail-pg0-x241.google.com ([2607:f8b0:400e:c05::241]:46052) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1eeURi-0001zE-N0 for qemu-devel@nongnu.org; Wed, 24 Jan 2018 18:27:10 -0500 Received: by mail-pg0-x241.google.com with SMTP id m136so3804330pga.12 for ; Wed, 24 Jan 2018 15:27:10 -0800 (PST) From: Richard Henderson Date: Wed, 24 Jan 2018 15:26:07 -0800 Message-Id: <20180124232625.30105-28-richard.henderson@linaro.org> In-Reply-To: <20180124232625.30105-1-richard.henderson@linaro.org> References: <20180124232625.30105-1-richard.henderson@linaro.org> Subject: [Qemu-devel] [PATCH v3 27/45] target/hppa: Implement halt and reset instructions List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Helge Deller From: Helge Deller Real hardware would use an external device to control the power. But for the moment let's invent instructions in reserved space, to be used by our custom firmware. Signed-off-by: Helge Deller Signed-off-by: Richard Henderson --- target/hppa/helper.h | 2 ++ target/hppa/op_helper.c | 13 +++++++++++++ target/hppa/translate.c | 25 ++++++++++++++++++++++++- 3 files changed, 39 insertions(+), 1 deletion(-) diff --git a/target/hppa/helper.h b/target/hppa/helper.h index 1e733b7926..31320740da 100644 --- a/target/hppa/helper.h +++ b/target/hppa/helper.h @@ -80,6 +80,8 @@ 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(reset, 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) diff --git a/target/hppa/op_helper.c b/target/hppa/op_helper.c index d270f94e31..c2eeced0e9 100644 --- a/target/hppa/op_helper.c +++ b/target/hppa/op_helper.c @@ -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 +640,18 @@ 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); +} + +void HELPER(reset)(CPUHPPAState *env) +{ + qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); + helper_excp(env, EXCP_HLT); +} + target_ureg HELPER(swap_system_mask)(CPUHPPAState *env, target_ureg nsm) { target_ulong psw = env->psw; diff --git a/target/hppa/translate.c b/target/hppa/translate.c index f3942b1baf..8c1ae4db78 100644 --- a/target/hppa/translate.c +++ b/target/hppa/translate.c @@ -2302,6 +2302,18 @@ 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, int reset) +{ + CHECK_MOST_PRIVILEGED(EXCP_PRIV_OPR); + nullify_over(ctx); + if (reset) { + gen_helper_reset(cpu_env); + } else { + gen_helper_shutdown(cpu_env); + } + return nullify_end(ctx, DISAS_NORETURN); +} #endif /* !CONFIG_USER_ONLY */ static const DisasInsn table_system[] = { @@ -4519,7 +4531,18 @@ 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 == 0xfffdead0) { + return gen_hlt(ctx, 0); /* halt system */ + } + if (insn == 0xfffdead1) { + return gen_hlt(ctx, 1); /* reset system */ + } +#endif + break; default: break; } -- 2.14.3