From c92458538f501eda585b4b774c50644aed391a8a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andreas=20F=C3=A4rber?= Date: Wed, 31 Oct 2012 02:41:11 +0100 Subject: [PATCH] target-alpha: Avoid leaking the alarm timer over reset MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Move the timer from CPUAlphaState to AlphaCPU to avoid the pointer being zero'ed once we implement reset. Would cause a segfault in sys_helper.c:helper_set_alarm(). This also simplifies timer initialization in Typhoon. Signed-off-by: Andreas Färber Acked-by: Richard Henderson --- hw/alpha_typhoon.c | 3 +-- target-alpha/cpu-qom.h | 3 +++ target-alpha/cpu.h | 1 - target-alpha/sys_helper.c | 6 ++++-- 4 files changed, 8 insertions(+), 5 deletions(-) diff --git a/hw/alpha_typhoon.c b/hw/alpha_typhoon.c index 4cc810fb21..40b3a47c7e 100644 --- a/hw/alpha_typhoon.c +++ b/hw/alpha_typhoon.c @@ -724,8 +724,7 @@ PCIBus *typhoon_init(ram_addr_t ram_size, ISABus **isa_bus, AlphaCPU *cpu = cpus[i]; s->cchip.cpu[i] = cpu; if (cpu != NULL) { - CPUAlphaState *env = &cpu->env; - env->alarm_timer = qemu_new_timer_ns(rtc_clock, + cpu->alarm_timer = qemu_new_timer_ns(rtc_clock, typhoon_alarm_timer, (void *)((uintptr_t)s + i)); } diff --git a/target-alpha/cpu-qom.h b/target-alpha/cpu-qom.h index 6b4ca6d1d1..98585d5023 100644 --- a/target-alpha/cpu-qom.h +++ b/target-alpha/cpu-qom.h @@ -58,6 +58,9 @@ typedef struct AlphaCPU { /*< public >*/ CPUAlphaState env; + + /* This alarm doesn't exist in real hardware; we wish it did. */ + struct QEMUTimer *alarm_timer; } AlphaCPU; static inline AlphaCPU *alpha_env_get_cpu(CPUAlphaState *env) diff --git a/target-alpha/cpu.h b/target-alpha/cpu.h index 32e3777cdc..e1d771562a 100644 --- a/target-alpha/cpu.h +++ b/target-alpha/cpu.h @@ -277,7 +277,6 @@ struct CPUAlphaState { #endif /* This alarm doesn't exist in real hardware; we wish it did. */ - struct QEMUTimer *alarm_timer; uint64_t alarm_expire; /* Those resources are used only in QEMU core */ diff --git a/target-alpha/sys_helper.c b/target-alpha/sys_helper.c index 40ca49c883..d4f14efd86 100644 --- a/target-alpha/sys_helper.c +++ b/target-alpha/sys_helper.c @@ -77,11 +77,13 @@ uint64_t helper_get_time(void) void helper_set_alarm(CPUAlphaState *env, uint64_t expire) { + AlphaCPU *cpu = alpha_env_get_cpu(env); + if (expire) { env->alarm_expire = expire; - qemu_mod_timer(env->alarm_timer, expire); + qemu_mod_timer(cpu->alarm_timer, expire); } else { - qemu_del_timer(env->alarm_timer); + qemu_del_timer(cpu->alarm_timer); } } #endif /* CONFIG_USER_ONLY */ -- GitLab