From 8a2b76ffc9ff610c3439617e19f1eb9be02be50f Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Thu, 26 Mar 2020 20:49:19 +0000 Subject: [PATCH] hw/arm/collie: Put StrongARMState* into a CollieMachineState struct MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Message-id: 20200326204919.22006-1-peter.maydell@linaro.org --- 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 4992084a3f6e..4b35ef4bed65 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);