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[81.2.115.148]) by smtp.gmail.com with ESMTPSA id 9sm4864561wmm.6.2020.03.26.13.49.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Mar 2020 13:49:21 -0700 (PDT) From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Subject: [PATCH v2] hw/arm/collie: Put StrongARMState* into a CollieMachineState struct Date: Thu, 26 Mar 2020 20:49:19 +0000 Message-Id: <20200326204919.22006-1-peter.maydell@linaro.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::341 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Coverity complains that the collie_init() function leaks the memory allocated in sa1110_init(). This is true but not significant since the function is called only once on machine init and the memory must remain in existence until QEMU exits anyway. Still, we can avoid the technical memory leak by keeping the pointer to the StrongARMState inside the machine state struct. Switch from the simple DEFINE_MACHINE() style to defining a subclass of TYPE_MACHINE which extends the MachineState struct, and keep the pointer there. Fixes: CID 1421921 Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daudé --- v1->v2: folded in the uncommitted change that fixes the arm_load_kernel() first argument. hw/arm/collie.c | 33 ++++++++++++++++++++++++++++----- 1 file changed, 28 insertions(+), 5 deletions(-) diff --git a/hw/arm/collie.c b/hw/arm/collie.c index 4992084a3f6..4b35ef4bed6 100644 --- a/hw/arm/collie.c +++ b/hw/arm/collie.c @@ -19,6 +19,16 @@ #include "exec/address-spaces.h" #include "cpu.h" +typedef struct { + MachineState parent; + + StrongARMState *sa1110; +} CollieMachineState; + +#define TYPE_COLLIE_MACHINE MACHINE_TYPE_NAME("collie") +#define COLLIE_MACHINE(obj) \ + OBJECT_CHECK(CollieMachineState, obj, TYPE_COLLIE_MACHINE) + static struct arm_boot_info collie_binfo = { .loader_start = SA_SDCS0, .ram_size = 0x20000000, @@ -26,9 +36,9 @@ static struct arm_boot_info collie_binfo = { static void collie_init(MachineState *machine) { - StrongARMState *s; DriveInfo *dinfo; MachineClass *mc = MACHINE_GET_CLASS(machine); + CollieMachineState *cms = COLLIE_MACHINE(machine); if (machine->ram_size != mc->default_ram_size) { char *sz = size_to_str(mc->default_ram_size); @@ -37,7 +47,7 @@ static void collie_init(MachineState *machine) exit(EXIT_FAILURE); } - s = sa1110_init(machine->cpu_type); + cms->sa1110 = sa1110_init(machine->cpu_type); memory_region_add_subregion(get_system_memory(), SA_SDCS0, machine->ram); @@ -54,11 +64,13 @@ static void collie_init(MachineState *machine) sysbus_create_simple("scoop", 0x40800000, NULL); collie_binfo.board_id = 0x208; - arm_load_kernel(s->cpu, machine, &collie_binfo); + arm_load_kernel(cms->sa1110->cpu, machine, &collie_binfo); } -static void collie_machine_init(MachineClass *mc) +static void collie_machine_class_init(ObjectClass *oc, void *data) { + MachineClass *mc = MACHINE_CLASS(oc); + mc->desc = "Sharp SL-5500 (Collie) PDA (SA-1110)"; mc->init = collie_init; mc->ignore_memory_transaction_failures = true; @@ -67,4 +79,15 @@ static void collie_machine_init(MachineClass *mc) mc->default_ram_id = "strongarm.sdram"; } -DEFINE_MACHINE("collie", collie_machine_init) +static const TypeInfo collie_machine_typeinfo = { + .name = TYPE_COLLIE_MACHINE, + .parent = TYPE_MACHINE, + .class_init = collie_machine_class_init, + .instance_size = sizeof(CollieMachineState), +}; + +static void collie_machine_register_types(void) +{ + type_register_static(&collie_machine_typeinfo); +} +type_init(collie_machine_register_types);