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RISC-V: Convert cpu definition towards future model
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- Model borrowed from target/sh4/cpu.c
- Rewrote riscv_cpu_list to use object_class_get_list
- Dropped 'struct RISCVCPUInfo' and used TypeInfo array
- Replaced riscv_cpu_register_types with DEFINE_TYPES
- Marked base class as abstract

Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by Michael Clark <mjc@sifive.com>
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Michael Clark committed Mar 9, 2018
1 parent c96d0c2 commit b31d4af
Showing 1 changed file with 69 additions and 54 deletions.
123 changes: 69 additions & 54 deletions target/riscv/cpu.c
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Original file line number Diff line number Diff line change
Expand Up @@ -115,6 +115,8 @@ static void riscv_any_cpu_init(Object *obj)
set_resetvec(env, DEFAULT_RSTVEC);
}

#if defined(TARGET_RISCV32)

static void rv32gcsu_priv1_09_1_cpu_init(Object *obj)
{
CPURISCVState *env = &RISCV_CPU(obj)->env;
Expand All @@ -141,6 +143,8 @@ static void rv32imacu_nommu_cpu_init(Object *obj)
set_resetvec(env, DEFAULT_RSTVEC);
}

#elif defined(TARGET_RISCV64)

static void rv64gcsu_priv1_09_1_cpu_init(Object *obj)
{
CPURISCVState *env = &RISCV_CPU(obj)->env;
Expand All @@ -167,20 +171,7 @@ static void rv64imacu_nommu_cpu_init(Object *obj)
set_resetvec(env, DEFAULT_RSTVEC);
}

static const RISCVCPUInfo riscv_cpus[] = {
{ 96, TYPE_RISCV_CPU_ANY, riscv_any_cpu_init },
{ 32, TYPE_RISCV_CPU_RV32GCSU_V1_09_1, rv32gcsu_priv1_09_1_cpu_init },
{ 32, TYPE_RISCV_CPU_RV32GCSU_V1_10_0, rv32gcsu_priv1_10_0_cpu_init },
{ 32, TYPE_RISCV_CPU_RV32IMACU_NOMMU, rv32imacu_nommu_cpu_init },
{ 32, TYPE_RISCV_CPU_SIFIVE_E31, rv32imacu_nommu_cpu_init },
{ 32, TYPE_RISCV_CPU_SIFIVE_U34, rv32gcsu_priv1_10_0_cpu_init },
{ 64, TYPE_RISCV_CPU_RV64GCSU_V1_09_1, rv64gcsu_priv1_09_1_cpu_init },
{ 64, TYPE_RISCV_CPU_RV64GCSU_V1_10_0, rv64gcsu_priv1_10_0_cpu_init },
{ 64, TYPE_RISCV_CPU_RV64IMACU_NOMMU, rv64imacu_nommu_cpu_init },
{ 64, TYPE_RISCV_CPU_SIFIVE_E51, rv64imacu_nommu_cpu_init },
{ 64, TYPE_RISCV_CPU_SIFIVE_U54, rv64gcsu_priv1_10_0_cpu_init },
{ 0, NULL, NULL }
};
#endif

static ObjectClass *riscv_cpu_class_by_name(const char *cpu_model)
{
Expand Down Expand Up @@ -366,28 +357,6 @@ static void riscv_cpu_class_init(ObjectClass *c, void *data)
cc->vmsd = &vmstate_riscv_cpu;
}

static void cpu_register(const RISCVCPUInfo *info)
{
TypeInfo type_info = {
.name = info->name,
.parent = TYPE_RISCV_CPU,
.instance_size = sizeof(RISCVCPU),
.instance_init = info->initfn,
};

type_register(&type_info);
}

static const TypeInfo riscv_cpu_type_info = {
.name = TYPE_RISCV_CPU,
.parent = TYPE_CPU,
.instance_size = sizeof(RISCVCPU),
.instance_init = riscv_cpu_init,
.abstract = false,
.class_size = sizeof(RISCVCPUClass),
.class_init = riscv_cpu_class_init,
};

char *riscv_isa_string(RISCVCPU *cpu)
{
int i;
Expand All @@ -403,30 +372,76 @@ char *riscv_isa_string(RISCVCPU *cpu)
return isa_string;
}

void riscv_cpu_list(FILE *f, fprintf_function cpu_fprintf)
typedef struct RISCVCPUListState {
fprintf_function cpu_fprintf;
FILE *file;
} RISCVCPUListState;

static gint riscv_cpu_list_compare(gconstpointer a, gconstpointer b)
{
const RISCVCPUInfo *info = riscv_cpus;
ObjectClass *class_a = (ObjectClass *)a;
ObjectClass *class_b = (ObjectClass *)b;
const char *name_a, *name_b;

while (info->name) {
if (info->bit_widths & TARGET_LONG_BITS) {
(*cpu_fprintf)(f, "%s\n", info->name);
}
info++;
}
name_a = object_class_get_name(class_a);
name_b = object_class_get_name(class_b);
return strcmp(name_a, name_b);
}

static void riscv_cpu_register_types(void)
static void riscv_cpu_list_entry(gpointer data, gpointer user_data)
{
const RISCVCPUInfo *info = riscv_cpus;
RISCVCPUListState *s = user_data;
const char *typename = object_class_get_name(OBJECT_CLASS(data));
int len = strlen(typename) - strlen(RISCV_CPU_TYPE_SUFFIX);

type_register_static(&riscv_cpu_type_info);
(*s->cpu_fprintf)(s->file, "%.*s\n", len, typename);
}

while (info->name) {
if (info->bit_widths & TARGET_LONG_BITS) {
cpu_register(info);
}
info++;
}
void riscv_cpu_list(FILE *f, fprintf_function cpu_fprintf)
{
RISCVCPUListState s = {
.cpu_fprintf = cpu_fprintf,
.file = f,
};
GSList *list;

list = object_class_get_list(TYPE_RISCV_CPU, false);
list = g_slist_sort(list, riscv_cpu_list_compare);
g_slist_foreach(list, riscv_cpu_list_entry, &s);
g_slist_free(list);
}

type_init(riscv_cpu_register_types)
#define DEFINE_CPU(type_name, initfn) \
{ \
.name = type_name, \
.parent = TYPE_RISCV_CPU, \
.instance_init = initfn \
}

static const TypeInfo riscv_cpu_type_infos[] = {
{
.name = TYPE_RISCV_CPU,
.parent = TYPE_CPU,
.instance_size = sizeof(RISCVCPU),
.instance_init = riscv_cpu_init,
.abstract = true,
.class_size = sizeof(RISCVCPUClass),
.class_init = riscv_cpu_class_init,
},
DEFINE_CPU(TYPE_RISCV_CPU_ANY, riscv_any_cpu_init),
#if defined(TARGET_RISCV32)
DEFINE_CPU(TYPE_RISCV_CPU_RV32GCSU_V1_09_1, rv32gcsu_priv1_09_1_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_RV32GCSU_V1_10_0, rv32gcsu_priv1_10_0_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_RV32IMACU_NOMMU, rv32imacu_nommu_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E31, rv32imacu_nommu_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U34, rv32gcsu_priv1_10_0_cpu_init)
#elif defined(TARGET_RISCV64)
DEFINE_CPU(TYPE_RISCV_CPU_RV64GCSU_V1_09_1, rv64gcsu_priv1_09_1_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_RV64GCSU_V1_10_0, rv64gcsu_priv1_10_0_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_RV64IMACU_NOMMU, rv64imacu_nommu_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E51, rv64imacu_nommu_cpu_init),
DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U54, rv64gcsu_priv1_10_0_cpu_init)
#endif
};

DEFINE_TYPES(riscv_cpu_type_infos)

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