Message ID | 20250206182711.2420505-4-pbonzini@redhat.com (mailing list archive) |
---|---|
State | New |
Headers | show |
Series | target/riscv: declarative CPU definitions | expand |
On Fri, Feb 7, 2025 at 4:28 AM Paolo Bonzini <pbonzini@redhat.com> wrote: > > Prepare for adding more fields to RISCVCPUDef and reading them in > riscv_cpu_init: instead of storing the misa_mxl_max field in > RISCVCPUClass, ensure that there's always a valid RISCVCPUDef struct > and go through it. > > Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Alistair > --- > target/riscv/cpu.h | 2 +- > hw/riscv/boot.c | 2 +- > target/riscv/cpu.c | 24 +++++++++++++++++++----- > target/riscv/gdbstub.c | 6 +++--- > target/riscv/kvm/kvm-cpu.c | 21 +++++++++------------ > target/riscv/machine.c | 2 +- > target/riscv/tcg/tcg-cpu.c | 8 ++++---- > target/riscv/translate.c | 2 +- > 8 files changed, 39 insertions(+), 28 deletions(-) > > diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h > index b2c9302634d..f757f0b6210 100644 > --- a/target/riscv/cpu.h > +++ b/target/riscv/cpu.h > @@ -533,7 +533,7 @@ struct RISCVCPUClass { > > DeviceRealize parent_realize; > ResettablePhases parent_phases; > - uint32_t misa_mxl_max; /* max mxl for this cpu */ > + RISCVCPUDef *def; > }; > > static inline int riscv_has_ext(CPURISCVState *env, target_ulong ext) > diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c > index c309441b7d8..13728e137c4 100644 > --- a/hw/riscv/boot.c > +++ b/hw/riscv/boot.c > @@ -37,7 +37,7 @@ > bool riscv_is_32bit(RISCVHartArrayState *harts) > { > RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(&harts->harts[0]); > - return mcc->misa_mxl_max == MXL_RV32; > + return mcc->def->misa_mxl_max == MXL_RV32; > } > > /* > diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c > index 29cfae38b75..803b2a7c3f4 100644 > --- a/target/riscv/cpu.c > +++ b/target/riscv/cpu.c > @@ -354,7 +354,7 @@ void riscv_cpu_set_misa_ext(CPURISCVState *env, uint32_t ext) > > int riscv_cpu_max_xlen(RISCVCPUClass *mcc) > { > - return 16 << mcc->misa_mxl_max; > + return 16 << mcc->def->misa_mxl_max; > } > > #ifndef CONFIG_USER_ONLY > @@ -1047,7 +1047,7 @@ static void riscv_cpu_reset_hold(Object *obj, ResetType type) > mcc->parent_phases.hold(obj, type); > } > #ifndef CONFIG_USER_ONLY > - env->misa_mxl = mcc->misa_mxl_max; > + env->misa_mxl = mcc->def->misa_mxl_max; > env->priv = PRV_M; > env->mstatus &= ~(MSTATUS_MIE | MSTATUS_MPRV); > if (env->misa_mxl > MXL_RV32) { > @@ -1447,7 +1447,7 @@ static void riscv_cpu_init(Object *obj) > RISCVCPU *cpu = RISCV_CPU(obj); > CPURISCVState *env = &cpu->env; > > - env->misa_mxl = mcc->misa_mxl_max; > + env->misa_mxl = mcc->def->misa_mxl_max; > > #ifndef CONFIG_USER_ONLY > qdev_init_gpio_in(DEVICE(obj), riscv_cpu_set_irq, > @@ -1538,7 +1538,7 @@ static void riscv_cpu_validate_misa_mxl(RISCVCPUClass *mcc) > CPUClass *cc = CPU_CLASS(mcc); > > /* Validate that MISA_MXL is set properly. */ > - switch (mcc->misa_mxl_max) { > + switch (mcc->def->misa_mxl_max) { > #ifdef TARGET_RISCV64 > case MXL_RV64: > case MXL_RV128: > @@ -2951,11 +2951,24 @@ static void riscv_cpu_common_class_init(ObjectClass *c, void *data) > device_class_set_props(dc, riscv_cpu_properties); > } > > +static void riscv_cpu_class_base_init(ObjectClass *c, void *data) > +{ > + RISCVCPUClass *mcc = RISCV_CPU_CLASS(c); > + RISCVCPUClass *pcc = RISCV_CPU_CLASS(object_class_get_parent(c)); > + > + if (pcc->def) { > + mcc->def = g_memdup2(pcc->def, sizeof(*pcc->def)); > + } else { > + mcc->def = g_new0(RISCVCPUDef, 1); > + } > +} > + > static void riscv_cpu_class_init(ObjectClass *c, void *data) > { > RISCVCPUClass *mcc = RISCV_CPU_CLASS(c); > + RISCVCPUDef *def = data; > > - mcc->misa_mxl_max = ((RISCVCPUDef *)data)->misa_mxl_max; > + mcc->def->misa_mxl_max = def->misa_mxl_max; > riscv_cpu_validate_misa_mxl(mcc); > } > > @@ -3106,6 +3119,7 @@ static const TypeInfo riscv_cpu_type_infos[] = { > .abstract = true, > .class_size = sizeof(RISCVCPUClass), > .class_init = riscv_cpu_common_class_init, > + .class_base_init = riscv_cpu_class_base_init, > }, > { > .name = TYPE_RISCV_DYNAMIC_CPU, > diff --git a/target/riscv/gdbstub.c b/target/riscv/gdbstub.c > index 18e88f416af..1934f919c01 100644 > --- a/target/riscv/gdbstub.c > +++ b/target/riscv/gdbstub.c > @@ -62,7 +62,7 @@ int riscv_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n) > return 0; > } > > - switch (mcc->misa_mxl_max) { > + switch (mcc->def->misa_mxl_max) { > case MXL_RV32: > return gdb_get_reg32(mem_buf, tmp); > case MXL_RV64: > @@ -82,7 +82,7 @@ int riscv_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) > int length = 0; > target_ulong tmp; > > - switch (mcc->misa_mxl_max) { > + switch (mcc->def->misa_mxl_max) { > case MXL_RV32: > tmp = (int32_t)ldl_p(mem_buf); > length = 4; > @@ -359,7 +359,7 @@ void riscv_cpu_register_gdb_regs_for_features(CPUState *cs) > ricsv_gen_dynamic_vector_feature(cs, cs->gdb_num_regs), > 0); > } > - switch (mcc->misa_mxl_max) { > + switch (mcc->def->misa_mxl_max) { > case MXL_RV32: > gdb_register_coprocessor(cs, riscv_gdb_get_virtual, > riscv_gdb_set_virtual, > diff --git a/target/riscv/kvm/kvm-cpu.c b/target/riscv/kvm/kvm-cpu.c > index 23ce7793594..0ea5219890e 100644 > --- a/target/riscv/kvm/kvm-cpu.c > +++ b/target/riscv/kvm/kvm-cpu.c > @@ -1985,22 +1985,19 @@ static void kvm_cpu_accel_register_types(void) > } > type_init(kvm_cpu_accel_register_types); > > -static void riscv_host_cpu_class_init(ObjectClass *c, void *data) > -{ > - RISCVCPUClass *mcc = RISCV_CPU_CLASS(c); > - > -#if defined(TARGET_RISCV32) > - mcc->misa_mxl_max = MXL_RV32; > -#elif defined(TARGET_RISCV64) > - mcc->misa_mxl_max = MXL_RV64; > -#endif > -} > - > static const TypeInfo riscv_kvm_cpu_type_infos[] = { > { > .name = TYPE_RISCV_CPU_HOST, > .parent = TYPE_RISCV_CPU, > - .class_init = riscv_host_cpu_class_init, > +#if defined(TARGET_RISCV32) > + .class_data = &((RISCVCPUDef) { > + .misa_mxl_max = MXL_RV32, > + }, > +#elif defined(TARGET_RISCV64) > + .class_data = &((RISCVCPUDef) { > + .misa_mxl_max = MXL_RV64, > + }, > +#endif > } > }; > > diff --git a/target/riscv/machine.c b/target/riscv/machine.c > index d8445244ab2..b34fc5f6aa5 100644 > --- a/target/riscv/machine.c > +++ b/target/riscv/machine.c > @@ -170,7 +170,7 @@ static bool rv128_needed(void *opaque) > { > RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(opaque); > > - return mcc->misa_mxl_max == MXL_RV128; > + return mcc->def->misa_mxl_max == MXL_RV128; > } > > static const VMStateDescription vmstate_rv128 = { > diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c > index 0a137281de1..1cbdef73dc3 100644 > --- a/target/riscv/tcg/tcg-cpu.c > +++ b/target/riscv/tcg/tcg-cpu.c > @@ -579,7 +579,7 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp) > return; > } > > - if (mcc->misa_mxl_max != MXL_RV32 && cpu->cfg.ext_zcf) { > + if (mcc->def->misa_mxl_max != MXL_RV32 && cpu->cfg.ext_zcf) { > error_setg(errp, "Zcf extension is only relevant to RV32"); > return; > } > @@ -676,7 +676,7 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp) > return; > } > > - if (mcc->misa_mxl_max == MXL_RV32 && cpu->cfg.ext_svukte) { > + if (mcc->def->misa_mxl_max == MXL_RV32 && cpu->cfg.ext_svukte) { > error_setg(errp, "svukte is not supported for RV32"); > return; > } > @@ -890,7 +890,7 @@ static void cpu_enable_zc_implied_rules(RISCVCPU *cpu) > cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcmp), true); > cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcmt), true); > > - if (riscv_has_ext(env, RVF) && mcc->misa_mxl_max == MXL_RV32) { > + if (riscv_has_ext(env, RVF) && mcc->def->misa_mxl_max == MXL_RV32) { > cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcf), true); > } > } > @@ -899,7 +899,7 @@ static void cpu_enable_zc_implied_rules(RISCVCPU *cpu) > if (riscv_has_ext(env, RVC) && env->priv_ver >= PRIV_VERSION_1_12_0) { > cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zca), true); > > - if (riscv_has_ext(env, RVF) && mcc->misa_mxl_max == MXL_RV32) { > + if (riscv_has_ext(env, RVF) && mcc->def->misa_mxl_max == MXL_RV32) { > cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcf), true); > } > > diff --git a/target/riscv/translate.c b/target/riscv/translate.c > index 698b74f7a8f..782e724a648 100644 > --- a/target/riscv/translate.c > +++ b/target/riscv/translate.c > @@ -1234,7 +1234,7 @@ static void riscv_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs) > ctx->cfg_vta_all_1s = cpu->cfg.rvv_ta_all_1s; > ctx->vstart_eq_zero = FIELD_EX32(tb_flags, TB_FLAGS, VSTART_EQ_ZERO); > ctx->vl_eq_vlmax = FIELD_EX32(tb_flags, TB_FLAGS, VL_EQ_VLMAX); > - ctx->misa_mxl_max = mcc->misa_mxl_max; > + ctx->misa_mxl_max = mcc->def->misa_mxl_max; > ctx->xl = FIELD_EX32(tb_flags, TB_FLAGS, XL); > ctx->address_xl = FIELD_EX32(tb_flags, TB_FLAGS, AXL); > ctx->cs = cs; > -- > 2.48.1 > >
diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index b2c9302634d..f757f0b6210 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -533,7 +533,7 @@ struct RISCVCPUClass { DeviceRealize parent_realize; ResettablePhases parent_phases; - uint32_t misa_mxl_max; /* max mxl for this cpu */ + RISCVCPUDef *def; }; static inline int riscv_has_ext(CPURISCVState *env, target_ulong ext) diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c index c309441b7d8..13728e137c4 100644 --- a/hw/riscv/boot.c +++ b/hw/riscv/boot.c @@ -37,7 +37,7 @@ bool riscv_is_32bit(RISCVHartArrayState *harts) { RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(&harts->harts[0]); - return mcc->misa_mxl_max == MXL_RV32; + return mcc->def->misa_mxl_max == MXL_RV32; } /* diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 29cfae38b75..803b2a7c3f4 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -354,7 +354,7 @@ void riscv_cpu_set_misa_ext(CPURISCVState *env, uint32_t ext) int riscv_cpu_max_xlen(RISCVCPUClass *mcc) { - return 16 << mcc->misa_mxl_max; + return 16 << mcc->def->misa_mxl_max; } #ifndef CONFIG_USER_ONLY @@ -1047,7 +1047,7 @@ static void riscv_cpu_reset_hold(Object *obj, ResetType type) mcc->parent_phases.hold(obj, type); } #ifndef CONFIG_USER_ONLY - env->misa_mxl = mcc->misa_mxl_max; + env->misa_mxl = mcc->def->misa_mxl_max; env->priv = PRV_M; env->mstatus &= ~(MSTATUS_MIE | MSTATUS_MPRV); if (env->misa_mxl > MXL_RV32) { @@ -1447,7 +1447,7 @@ static void riscv_cpu_init(Object *obj) RISCVCPU *cpu = RISCV_CPU(obj); CPURISCVState *env = &cpu->env; - env->misa_mxl = mcc->misa_mxl_max; + env->misa_mxl = mcc->def->misa_mxl_max; #ifndef CONFIG_USER_ONLY qdev_init_gpio_in(DEVICE(obj), riscv_cpu_set_irq, @@ -1538,7 +1538,7 @@ static void riscv_cpu_validate_misa_mxl(RISCVCPUClass *mcc) CPUClass *cc = CPU_CLASS(mcc); /* Validate that MISA_MXL is set properly. */ - switch (mcc->misa_mxl_max) { + switch (mcc->def->misa_mxl_max) { #ifdef TARGET_RISCV64 case MXL_RV64: case MXL_RV128: @@ -2951,11 +2951,24 @@ static void riscv_cpu_common_class_init(ObjectClass *c, void *data) device_class_set_props(dc, riscv_cpu_properties); } +static void riscv_cpu_class_base_init(ObjectClass *c, void *data) +{ + RISCVCPUClass *mcc = RISCV_CPU_CLASS(c); + RISCVCPUClass *pcc = RISCV_CPU_CLASS(object_class_get_parent(c)); + + if (pcc->def) { + mcc->def = g_memdup2(pcc->def, sizeof(*pcc->def)); + } else { + mcc->def = g_new0(RISCVCPUDef, 1); + } +} + static void riscv_cpu_class_init(ObjectClass *c, void *data) { RISCVCPUClass *mcc = RISCV_CPU_CLASS(c); + RISCVCPUDef *def = data; - mcc->misa_mxl_max = ((RISCVCPUDef *)data)->misa_mxl_max; + mcc->def->misa_mxl_max = def->misa_mxl_max; riscv_cpu_validate_misa_mxl(mcc); } @@ -3106,6 +3119,7 @@ static const TypeInfo riscv_cpu_type_infos[] = { .abstract = true, .class_size = sizeof(RISCVCPUClass), .class_init = riscv_cpu_common_class_init, + .class_base_init = riscv_cpu_class_base_init, }, { .name = TYPE_RISCV_DYNAMIC_CPU, diff --git a/target/riscv/gdbstub.c b/target/riscv/gdbstub.c index 18e88f416af..1934f919c01 100644 --- a/target/riscv/gdbstub.c +++ b/target/riscv/gdbstub.c @@ -62,7 +62,7 @@ int riscv_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n) return 0; } - switch (mcc->misa_mxl_max) { + switch (mcc->def->misa_mxl_max) { case MXL_RV32: return gdb_get_reg32(mem_buf, tmp); case MXL_RV64: @@ -82,7 +82,7 @@ int riscv_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) int length = 0; target_ulong tmp; - switch (mcc->misa_mxl_max) { + switch (mcc->def->misa_mxl_max) { case MXL_RV32: tmp = (int32_t)ldl_p(mem_buf); length = 4; @@ -359,7 +359,7 @@ void riscv_cpu_register_gdb_regs_for_features(CPUState *cs) ricsv_gen_dynamic_vector_feature(cs, cs->gdb_num_regs), 0); } - switch (mcc->misa_mxl_max) { + switch (mcc->def->misa_mxl_max) { case MXL_RV32: gdb_register_coprocessor(cs, riscv_gdb_get_virtual, riscv_gdb_set_virtual, diff --git a/target/riscv/kvm/kvm-cpu.c b/target/riscv/kvm/kvm-cpu.c index 23ce7793594..0ea5219890e 100644 --- a/target/riscv/kvm/kvm-cpu.c +++ b/target/riscv/kvm/kvm-cpu.c @@ -1985,22 +1985,19 @@ static void kvm_cpu_accel_register_types(void) } type_init(kvm_cpu_accel_register_types); -static void riscv_host_cpu_class_init(ObjectClass *c, void *data) -{ - RISCVCPUClass *mcc = RISCV_CPU_CLASS(c); - -#if defined(TARGET_RISCV32) - mcc->misa_mxl_max = MXL_RV32; -#elif defined(TARGET_RISCV64) - mcc->misa_mxl_max = MXL_RV64; -#endif -} - static const TypeInfo riscv_kvm_cpu_type_infos[] = { { .name = TYPE_RISCV_CPU_HOST, .parent = TYPE_RISCV_CPU, - .class_init = riscv_host_cpu_class_init, +#if defined(TARGET_RISCV32) + .class_data = &((RISCVCPUDef) { + .misa_mxl_max = MXL_RV32, + }, +#elif defined(TARGET_RISCV64) + .class_data = &((RISCVCPUDef) { + .misa_mxl_max = MXL_RV64, + }, +#endif } }; diff --git a/target/riscv/machine.c b/target/riscv/machine.c index d8445244ab2..b34fc5f6aa5 100644 --- a/target/riscv/machine.c +++ b/target/riscv/machine.c @@ -170,7 +170,7 @@ static bool rv128_needed(void *opaque) { RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(opaque); - return mcc->misa_mxl_max == MXL_RV128; + return mcc->def->misa_mxl_max == MXL_RV128; } static const VMStateDescription vmstate_rv128 = { diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c index 0a137281de1..1cbdef73dc3 100644 --- a/target/riscv/tcg/tcg-cpu.c +++ b/target/riscv/tcg/tcg-cpu.c @@ -579,7 +579,7 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp) return; } - if (mcc->misa_mxl_max != MXL_RV32 && cpu->cfg.ext_zcf) { + if (mcc->def->misa_mxl_max != MXL_RV32 && cpu->cfg.ext_zcf) { error_setg(errp, "Zcf extension is only relevant to RV32"); return; } @@ -676,7 +676,7 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp) return; } - if (mcc->misa_mxl_max == MXL_RV32 && cpu->cfg.ext_svukte) { + if (mcc->def->misa_mxl_max == MXL_RV32 && cpu->cfg.ext_svukte) { error_setg(errp, "svukte is not supported for RV32"); return; } @@ -890,7 +890,7 @@ static void cpu_enable_zc_implied_rules(RISCVCPU *cpu) cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcmp), true); cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcmt), true); - if (riscv_has_ext(env, RVF) && mcc->misa_mxl_max == MXL_RV32) { + if (riscv_has_ext(env, RVF) && mcc->def->misa_mxl_max == MXL_RV32) { cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcf), true); } } @@ -899,7 +899,7 @@ static void cpu_enable_zc_implied_rules(RISCVCPU *cpu) if (riscv_has_ext(env, RVC) && env->priv_ver >= PRIV_VERSION_1_12_0) { cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zca), true); - if (riscv_has_ext(env, RVF) && mcc->misa_mxl_max == MXL_RV32) { + if (riscv_has_ext(env, RVF) && mcc->def->misa_mxl_max == MXL_RV32) { cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcf), true); } diff --git a/target/riscv/translate.c b/target/riscv/translate.c index 698b74f7a8f..782e724a648 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -1234,7 +1234,7 @@ static void riscv_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs) ctx->cfg_vta_all_1s = cpu->cfg.rvv_ta_all_1s; ctx->vstart_eq_zero = FIELD_EX32(tb_flags, TB_FLAGS, VSTART_EQ_ZERO); ctx->vl_eq_vlmax = FIELD_EX32(tb_flags, TB_FLAGS, VL_EQ_VLMAX); - ctx->misa_mxl_max = mcc->misa_mxl_max; + ctx->misa_mxl_max = mcc->def->misa_mxl_max; ctx->xl = FIELD_EX32(tb_flags, TB_FLAGS, XL); ctx->address_xl = FIELD_EX32(tb_flags, TB_FLAGS, AXL); ctx->cs = cs;
Prepare for adding more fields to RISCVCPUDef and reading them in riscv_cpu_init: instead of storing the misa_mxl_max field in RISCVCPUClass, ensure that there's always a valid RISCVCPUDef struct and go through it. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> --- target/riscv/cpu.h | 2 +- hw/riscv/boot.c | 2 +- target/riscv/cpu.c | 24 +++++++++++++++++++----- target/riscv/gdbstub.c | 6 +++--- target/riscv/kvm/kvm-cpu.c | 21 +++++++++------------ target/riscv/machine.c | 2 +- target/riscv/tcg/tcg-cpu.c | 8 ++++---- target/riscv/translate.c | 2 +- 8 files changed, 39 insertions(+), 28 deletions(-)