hw/avr/atmega: Fix wrong initial value of stack pointer
The current implementation initializes the stack pointer of AVR devices to 0. Although older AVR devices used to be like that, newer ones set it to RAMEND. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1525 Signed-off-by: Gihun Nam <gihun.nam@outlook.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-ID: <PH0P222MB0010877445B594724D40C924DEBDA@PH0P222MB0010.NAMP222.PROD.OUTLOOK.COM> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> (cherry picked from commit 235948bf53860a1e2df5134eae7b0a30a971a124) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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@ -233,6 +233,10 @@ static void atmega_realize(DeviceState *dev, Error **errp)
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/* CPU */
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/* CPU */
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object_initialize_child(OBJECT(dev), "cpu", &s->cpu, mc->cpu_type);
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object_initialize_child(OBJECT(dev), "cpu", &s->cpu, mc->cpu_type);
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object_property_set_uint(OBJECT(&s->cpu), "init-sp",
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mc->io_size + mc->sram_size - 1, &error_abort);
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qdev_realize(DEVICE(&s->cpu), NULL, &error_abort);
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qdev_realize(DEVICE(&s->cpu), NULL, &error_abort);
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cpudev = DEVICE(&s->cpu);
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cpudev = DEVICE(&s->cpu);
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@ -25,6 +25,7 @@
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#include "cpu.h"
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#include "cpu.h"
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#include "disas/dis-asm.h"
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#include "disas/dis-asm.h"
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#include "tcg/debug-assert.h"
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#include "tcg/debug-assert.h"
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#include "hw/qdev-properties.h"
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static void avr_cpu_set_pc(CPUState *cs, vaddr value)
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static void avr_cpu_set_pc(CPUState *cs, vaddr value)
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{
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{
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@ -95,7 +96,7 @@ static void avr_cpu_reset_hold(Object *obj)
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env->rampY = 0;
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env->rampY = 0;
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env->rampZ = 0;
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env->rampZ = 0;
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env->eind = 0;
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env->eind = 0;
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env->sp = 0;
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env->sp = cpu->init_sp;
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env->skip = 0;
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env->skip = 0;
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@ -154,6 +155,11 @@ static void avr_cpu_initfn(Object *obj)
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sizeof(cpu->env.intsrc) * 8);
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sizeof(cpu->env.intsrc) * 8);
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}
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}
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static Property avr_cpu_properties[] = {
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DEFINE_PROP_UINT32("init-sp", AVRCPU, init_sp, 0),
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DEFINE_PROP_END_OF_LIST()
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};
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static ObjectClass *avr_cpu_class_by_name(const char *cpu_model)
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static ObjectClass *avr_cpu_class_by_name(const char *cpu_model)
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{
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{
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ObjectClass *oc;
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ObjectClass *oc;
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@ -231,6 +237,8 @@ static void avr_cpu_class_init(ObjectClass *oc, void *data)
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device_class_set_parent_realize(dc, avr_cpu_realizefn, &mcc->parent_realize);
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device_class_set_parent_realize(dc, avr_cpu_realizefn, &mcc->parent_realize);
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device_class_set_props(dc, avr_cpu_properties);
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resettable_class_set_parent_phases(rc, NULL, avr_cpu_reset_hold, NULL,
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resettable_class_set_parent_phases(rc, NULL, avr_cpu_reset_hold, NULL,
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&mcc->parent_phases);
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&mcc->parent_phases);
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@ -150,6 +150,9 @@ struct ArchCPU {
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CPUNegativeOffsetState neg;
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CPUNegativeOffsetState neg;
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CPUAVRState env;
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CPUAVRState env;
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/* Initial value of stack pointer */
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uint32_t init_sp;
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};
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};
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extern const struct VMStateDescription vms_avr_cpu;
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extern const struct VMStateDescription vms_avr_cpu;
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