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Re: [PATCH v17 04/14] gdbstub: Use GDBFeature for gdb_register_coprocess
|
From: |
Alistair Francis |
|
Subject: |
Re: [PATCH v17 04/14] gdbstub: Use GDBFeature for gdb_register_coprocessor |
|
Date: |
Mon, 18 Dec 2023 10:12:45 +1000 |
On Wed, Dec 13, 2023 at 4:42 PM Akihiko Odaki <akihiko.odaki@daynix.com> wrote:
>
> This is a tree-wide change to introduce GDBFeature parameter to
> gdb_register_coprocessor(). The new parameter just replaces num_regs
> and xml parameters for now. GDBFeature will be utilized to simplify XML
> lookup in a following change.
>
> Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
> Acked-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Alistair
> ---
> include/exec/gdbstub.h | 2 +-
> gdbstub/gdbstub.c | 13 +++++++------
> target/arm/gdbstub.c | 35 +++++++++++++++++++----------------
> target/hexagon/cpu.c | 3 +--
> target/loongarch/gdbstub.c | 2 +-
> target/m68k/helper.c | 6 +++---
> target/microblaze/cpu.c | 5 +++--
> target/ppc/gdbstub.c | 11 ++++++-----
> target/riscv/gdbstub.c | 20 ++++++++++++--------
> target/s390x/gdbstub.c | 28 +++++++---------------------
> 10 files changed, 60 insertions(+), 65 deletions(-)
>
> diff --git a/include/exec/gdbstub.h b/include/exec/gdbstub.h
> index d8a3c56fa2b8..ac6fce99a64e 100644
> --- a/include/exec/gdbstub.h
> +++ b/include/exec/gdbstub.h
> @@ -38,7 +38,7 @@ typedef int (*gdb_set_reg_cb)(CPUArchState *env, uint8_t
> *buf, int reg);
> */
> void gdb_register_coprocessor(CPUState *cpu,
> gdb_get_reg_cb get_reg, gdb_set_reg_cb set_reg,
> - int num_regs, const char *xml, int g_pos);
> + const GDBFeature *feature, int g_pos);
>
> /**
> * gdbserver_start: start the gdb server
> diff --git a/gdbstub/gdbstub.c b/gdbstub/gdbstub.c
> index 46d752bbc2cd..068180c83c76 100644
> --- a/gdbstub/gdbstub.c
> +++ b/gdbstub/gdbstub.c
> @@ -544,7 +544,7 @@ static int gdb_write_register(CPUState *cpu, uint8_t
> *mem_buf, int reg)
>
> void gdb_register_coprocessor(CPUState *cpu,
> gdb_get_reg_cb get_reg, gdb_set_reg_cb set_reg,
> - int num_regs, const char *xml, int g_pos)
> + const GDBFeature *feature, int g_pos)
> {
> GDBRegisterState *s;
> guint i;
> @@ -553,7 +553,7 @@ void gdb_register_coprocessor(CPUState *cpu,
> for (i = 0; i < cpu->gdb_regs->len; i++) {
> /* Check for duplicates. */
> s = &g_array_index(cpu->gdb_regs, GDBRegisterState, i);
> - if (strcmp(s->xml, xml) == 0) {
> + if (strcmp(s->xml, feature->xmlname) == 0) {
> return;
> }
> }
> @@ -565,17 +565,18 @@ void gdb_register_coprocessor(CPUState *cpu,
> g_array_set_size(cpu->gdb_regs, i + 1);
> s = &g_array_index(cpu->gdb_regs, GDBRegisterState, i);
> s->base_reg = cpu->gdb_num_regs;
> - s->num_regs = num_regs;
> + s->num_regs = feature->num_regs;
> s->get_reg = get_reg;
> s->set_reg = set_reg;
> - s->xml = xml;
> + s->xml = feature->xml;
>
> /* Add to end of list. */
> - cpu->gdb_num_regs += num_regs;
> + cpu->gdb_num_regs += feature->num_regs;
> if (g_pos) {
> if (g_pos != s->base_reg) {
> error_report("Error: Bad gdb register numbering for '%s', "
> - "expected %d got %d", xml, g_pos, s->base_reg);
> + "expected %d got %d", feature->xml,
> + g_pos, s->base_reg);
> } else {
> cpu->gdb_num_g_regs = cpu->gdb_num_regs;
> }
> diff --git a/target/arm/gdbstub.c b/target/arm/gdbstub.c
> index 5949adfb31ae..f2b201d31254 100644
> --- a/target/arm/gdbstub.c
> +++ b/target/arm/gdbstub.c
> @@ -483,14 +483,14 @@ void arm_cpu_register_gdb_regs_for_features(ARMCPU *cpu)
> */
> #ifdef TARGET_AARCH64
> if (isar_feature_aa64_sve(&cpu->isar)) {
> - int nreg = arm_gen_dynamic_svereg_feature(cs,
> cs->gdb_num_regs)->num_regs;
> + GDBFeature *feature = arm_gen_dynamic_svereg_feature(cs,
> cs->gdb_num_regs);
> gdb_register_coprocessor(cs, aarch64_gdb_get_sve_reg,
> - aarch64_gdb_set_sve_reg, nreg,
> - "sve-registers.xml", 0);
> + aarch64_gdb_set_sve_reg, feature, 0);
> } else {
> gdb_register_coprocessor(cs, aarch64_gdb_get_fpu_reg,
> aarch64_gdb_set_fpu_reg,
> - 34, "aarch64-fpu.xml", 0);
> +
> gdb_find_static_feature("aarch64-fpu.xml"),
> + 0);
> }
> /*
> * Note that we report pauth information via the feature name
> @@ -501,19 +501,22 @@ void arm_cpu_register_gdb_regs_for_features(ARMCPU *cpu)
> if (isar_feature_aa64_pauth(&cpu->isar)) {
> gdb_register_coprocessor(cs, aarch64_gdb_get_pauth_reg,
> aarch64_gdb_set_pauth_reg,
> - 4, "aarch64-pauth.xml", 0);
> +
> gdb_find_static_feature("aarch64-pauth.xml"),
> + 0);
> }
> #endif
> } else {
> if (arm_feature(env, ARM_FEATURE_NEON)) {
> gdb_register_coprocessor(cs, vfp_gdb_get_reg, vfp_gdb_set_reg,
> - 49, "arm-neon.xml", 0);
> + gdb_find_static_feature("arm-neon.xml"),
> + 0);
> } else if (cpu_isar_feature(aa32_simd_r32, cpu)) {
> gdb_register_coprocessor(cs, vfp_gdb_get_reg, vfp_gdb_set_reg,
> - 33, "arm-vfp3.xml", 0);
> + gdb_find_static_feature("arm-vfp3.xml"),
> + 0);
> } else if (cpu_isar_feature(aa32_vfp_simd, cpu)) {
> gdb_register_coprocessor(cs, vfp_gdb_get_reg, vfp_gdb_set_reg,
> - 17, "arm-vfp.xml", 0);
> + gdb_find_static_feature("arm-vfp.xml"),
> 0);
> }
> if (!arm_feature(env, ARM_FEATURE_M)) {
> /*
> @@ -521,29 +524,29 @@ void arm_cpu_register_gdb_regs_for_features(ARMCPU *cpu)
> * expose to gdb.
> */
> gdb_register_coprocessor(cs, vfp_gdb_get_sysreg,
> vfp_gdb_set_sysreg,
> - 2, "arm-vfp-sysregs.xml", 0);
> +
> gdb_find_static_feature("arm-vfp-sysregs.xml"),
> + 0);
> }
> }
> if (cpu_isar_feature(aa32_mve, cpu) && tcg_enabled()) {
> gdb_register_coprocessor(cs, mve_gdb_get_reg, mve_gdb_set_reg,
> - 1, "arm-m-profile-mve.xml", 0);
> +
> gdb_find_static_feature("arm-m-profile-mve.xml"),
> + 0);
> }
> gdb_register_coprocessor(cs, arm_gdb_get_sysreg, arm_gdb_set_sysreg,
> - arm_gen_dynamic_sysreg_feature(cs,
> cs->gdb_num_regs)->num_regs,
> - "system-registers.xml", 0);
> + arm_gen_dynamic_sysreg_feature(cs,
> cs->gdb_num_regs),
> + 0);
>
> #ifdef CONFIG_TCG
> if (arm_feature(env, ARM_FEATURE_M) && tcg_enabled()) {
> gdb_register_coprocessor(cs,
> arm_gdb_get_m_systemreg, arm_gdb_set_m_systemreg,
> - arm_gen_dynamic_m_systemreg_feature(cs,
> cs->gdb_num_regs)->num_regs,
> - "arm-m-system.xml", 0);
> + arm_gen_dynamic_m_systemreg_feature(cs, cs->gdb_num_regs), 0);
> #ifndef CONFIG_USER_ONLY
> if (arm_feature(env, ARM_FEATURE_M_SECURITY)) {
> gdb_register_coprocessor(cs,
> arm_gdb_get_m_secextreg, arm_gdb_set_m_secextreg,
> - arm_gen_dynamic_m_secextreg_feature(cs,
> cs->gdb_num_regs)->num_regs,
> - "arm-m-secext.xml", 0);
> + arm_gen_dynamic_m_secextreg_feature(cs, cs->gdb_num_regs),
> 0);
> }
> #endif
> }
> diff --git a/target/hexagon/cpu.c b/target/hexagon/cpu.c
> index 9d1ffc3b4bb6..65ac9c75ad08 100644
> --- a/target/hexagon/cpu.c
> +++ b/target/hexagon/cpu.c
> @@ -341,8 +341,7 @@ static void hexagon_cpu_realize(DeviceState *dev, Error
> **errp)
>
> gdb_register_coprocessor(cs, hexagon_hvx_gdb_read_register,
> hexagon_hvx_gdb_write_register,
> - NUM_VREGS + NUM_QREGS,
> - "hexagon-hvx.xml", 0);
> + gdb_find_static_feature("hexagon-hvx.xml"), 0);
>
> qemu_init_vcpu(cs);
> cpu_reset(cs);
> diff --git a/target/loongarch/gdbstub.c b/target/loongarch/gdbstub.c
> index 5fc2f19e965e..843a869450ee 100644
> --- a/target/loongarch/gdbstub.c
> +++ b/target/loongarch/gdbstub.c
> @@ -118,5 +118,5 @@ static int loongarch_gdb_set_fpu(CPULoongArchState *env,
> void loongarch_cpu_register_gdb_regs_for_features(CPUState *cs)
> {
> gdb_register_coprocessor(cs, loongarch_gdb_get_fpu,
> loongarch_gdb_set_fpu,
> - 41, "loongarch-fpu.xml", 0);
> + gdb_find_static_feature("loongarch-fpu.xml"),
> 0);
> }
> diff --git a/target/m68k/helper.c b/target/m68k/helper.c
> index 0a1544cd68d9..675f2dcd5ad4 100644
> --- a/target/m68k/helper.c
> +++ b/target/m68k/helper.c
> @@ -152,10 +152,10 @@ void m68k_cpu_init_gdb(M68kCPU *cpu)
>
> if (m68k_feature(env, M68K_FEATURE_CF_FPU)) {
> gdb_register_coprocessor(cs, cf_fpu_gdb_get_reg, cf_fpu_gdb_set_reg,
> - 11, "cf-fp.xml", 18);
> + gdb_find_static_feature("cf-fp.xml"), 18);
> } else if (m68k_feature(env, M68K_FEATURE_FPU)) {
> - gdb_register_coprocessor(cs, m68k_fpu_gdb_get_reg,
> - m68k_fpu_gdb_set_reg, 11, "m68k-fp.xml",
> 18);
> + gdb_register_coprocessor(cs, m68k_fpu_gdb_get_reg,
> m68k_fpu_gdb_set_reg,
> + gdb_find_static_feature("m68k-fp.xml"), 18);
> }
> /* TODO: Add [E]MAC registers. */
> }
> diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c
> index bbb3335cadd8..1998f69828f9 100644
> --- a/target/microblaze/cpu.c
> +++ b/target/microblaze/cpu.c
> @@ -297,8 +297,9 @@ static void mb_cpu_initfn(Object *obj)
> CPUMBState *env = &cpu->env;
>
> gdb_register_coprocessor(CPU(cpu), mb_cpu_gdb_read_stack_protect,
> - mb_cpu_gdb_write_stack_protect, 2,
> - "microblaze-stack-protect.xml", 0);
> + mb_cpu_gdb_write_stack_protect,
> +
> gdb_find_static_feature("microblaze-stack-protect.xml"),
> + 0);
>
> set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
>
> diff --git a/target/ppc/gdbstub.c b/target/ppc/gdbstub.c
> index e3be3dbd109a..09b852464f38 100644
> --- a/target/ppc/gdbstub.c
> +++ b/target/ppc/gdbstub.c
> @@ -570,23 +570,24 @@ void ppc_gdb_init(CPUState *cs, PowerPCCPUClass *pcc)
> {
> if (pcc->insns_flags & PPC_FLOAT) {
> gdb_register_coprocessor(cs, gdb_get_float_reg, gdb_set_float_reg,
> - 33, "power-fpu.xml", 0);
> + gdb_find_static_feature("power-fpu.xml"),
> 0);
> }
> if (pcc->insns_flags & PPC_ALTIVEC) {
> gdb_register_coprocessor(cs, gdb_get_avr_reg, gdb_set_avr_reg,
> - 34, "power-altivec.xml", 0);
> +
> gdb_find_static_feature("power-altivec.xml"),
> + 0);
> }
> if (pcc->insns_flags & PPC_SPE) {
> gdb_register_coprocessor(cs, gdb_get_spe_reg, gdb_set_spe_reg,
> - 34, "power-spe.xml", 0);
> + gdb_find_static_feature("power-spe.xml"),
> 0);
> }
> if (pcc->insns_flags2 & PPC2_VSX) {
> gdb_register_coprocessor(cs, gdb_get_vsx_reg, gdb_set_vsx_reg,
> - 32, "power-vsx.xml", 0);
> + gdb_find_static_feature("power-vsx.xml"),
> 0);
> }
> #ifndef CONFIG_USER_ONLY
> gdb_gen_spr_feature(cs);
> gdb_register_coprocessor(cs, gdb_get_spr_reg, gdb_set_spr_reg,
> - pcc->gdb_spr.num_regs, "power-spr.xml", 0);
> + &pcc->gdb_spr, 0);
> #endif
> }
> diff --git a/target/riscv/gdbstub.c b/target/riscv/gdbstub.c
> index 76b72a959549..a879869fa1aa 100644
> --- a/target/riscv/gdbstub.c
> +++ b/target/riscv/gdbstub.c
> @@ -311,28 +311,32 @@ void riscv_cpu_register_gdb_regs_for_features(CPUState
> *cs)
> CPURISCVState *env = &cpu->env;
> if (env->misa_ext & RVD) {
> gdb_register_coprocessor(cs, riscv_gdb_get_fpu, riscv_gdb_set_fpu,
> - 32, "riscv-64bit-fpu.xml", 0);
> +
> gdb_find_static_feature("riscv-64bit-fpu.xml"),
> + 0);
> } else if (env->misa_ext & RVF) {
> gdb_register_coprocessor(cs, riscv_gdb_get_fpu, riscv_gdb_set_fpu,
> - 32, "riscv-32bit-fpu.xml", 0);
> +
> gdb_find_static_feature("riscv-32bit-fpu.xml"),
> + 0);
> }
> if (env->misa_ext & RVV) {
> gdb_register_coprocessor(cs, riscv_gdb_get_vector,
> riscv_gdb_set_vector,
> - ricsv_gen_dynamic_vector_feature(cs,
> cs->gdb_num_regs)->num_regs,
> - "riscv-vector.xml", 0);
> + ricsv_gen_dynamic_vector_feature(cs,
> cs->gdb_num_regs),
> + 0);
> }
> switch (mcc->misa_mxl_max) {
> case MXL_RV32:
> gdb_register_coprocessor(cs, riscv_gdb_get_virtual,
> riscv_gdb_set_virtual,
> - 1, "riscv-32bit-virtual.xml", 0);
> +
> gdb_find_static_feature("riscv-32bit-virtual.xml"),
> + 0);
> break;
> case MXL_RV64:
> case MXL_RV128:
> gdb_register_coprocessor(cs, riscv_gdb_get_virtual,
> riscv_gdb_set_virtual,
> - 1, "riscv-64bit-virtual.xml", 0);
> +
> gdb_find_static_feature("riscv-64bit-virtual.xml"),
> + 0);
> break;
> default:
> g_assert_not_reached();
> @@ -340,7 +344,7 @@ void riscv_cpu_register_gdb_regs_for_features(CPUState
> *cs)
>
> if (cpu->cfg.ext_zicsr) {
> gdb_register_coprocessor(cs, riscv_gdb_get_csr, riscv_gdb_set_csr,
> - riscv_gen_dynamic_csr_feature(cs,
> cs->gdb_num_regs)->num_regs,
> - "riscv-csr.xml", 0);
> + riscv_gen_dynamic_csr_feature(cs,
> cs->gdb_num_regs),
> + 0);
> }
> }
> diff --git a/target/s390x/gdbstub.c b/target/s390x/gdbstub.c
> index 6fbfd41bc867..02c388dc323b 100644
> --- a/target/s390x/gdbstub.c
> +++ b/target/s390x/gdbstub.c
> @@ -69,8 +69,6 @@ int s390_cpu_gdb_write_register(CPUState *cs, uint8_t
> *mem_buf, int n)
> /* the values represent the positions in s390-acr.xml */
> #define S390_A0_REGNUM 0
> #define S390_A15_REGNUM 15
> -/* total number of registers in s390-acr.xml */
> -#define S390_NUM_AC_REGS 16
>
> static int cpu_read_ac_reg(CPUS390XState *env, GByteArray *buf, int n)
> {
> @@ -98,8 +96,6 @@ static int cpu_write_ac_reg(CPUS390XState *env, uint8_t
> *mem_buf, int n)
> #define S390_FPC_REGNUM 0
> #define S390_F0_REGNUM 1
> #define S390_F15_REGNUM 16
> -/* total number of registers in s390-fpr.xml */
> -#define S390_NUM_FP_REGS 17
>
> static int cpu_read_fp_reg(CPUS390XState *env, GByteArray *buf, int n)
> {
> @@ -132,8 +128,6 @@ static int cpu_write_fp_reg(CPUS390XState *env, uint8_t
> *mem_buf, int n)
> #define S390_V15L_REGNUM 15
> #define S390_V16_REGNUM 16
> #define S390_V31_REGNUM 31
> -/* total number of registers in s390-vx.xml */
> -#define S390_NUM_VREGS 32
>
> static int cpu_read_vreg(CPUS390XState *env, GByteArray *buf, int n)
> {
> @@ -172,8 +166,6 @@ static int cpu_write_vreg(CPUS390XState *env, uint8_t
> *mem_buf, int n)
> /* the values represent the positions in s390-cr.xml */
> #define S390_C0_REGNUM 0
> #define S390_C15_REGNUM 15
> -/* total number of registers in s390-cr.xml */
> -#define S390_NUM_C_REGS 16
>
> #ifndef CONFIG_USER_ONLY
> static int cpu_read_c_reg(CPUS390XState *env, GByteArray *buf, int n)
> @@ -206,8 +198,6 @@ static int cpu_write_c_reg(CPUS390XState *env, uint8_t
> *mem_buf, int n)
> #define S390_VIRT_CPUTM_REGNUM 1
> #define S390_VIRT_BEA_REGNUM 2
> #define S390_VIRT_PREFIX_REGNUM 3
> -/* total number of registers in s390-virt.xml */
> -#define S390_NUM_VIRT_REGS 4
>
> static int cpu_read_virt_reg(CPUS390XState *env, GByteArray *mem_buf, int n)
> {
> @@ -254,8 +244,6 @@ static int cpu_write_virt_reg(CPUS390XState *env, uint8_t
> *mem_buf, int n)
> #define S390_VIRT_KVM_PFT_REGNUM 1
> #define S390_VIRT_KVM_PFS_REGNUM 2
> #define S390_VIRT_KVM_PFC_REGNUM 3
> -/* total number of registers in s390-virt-kvm.xml */
> -#define S390_NUM_VIRT_KVM_REGS 4
>
> static int cpu_read_virt_kvm_reg(CPUS390XState *env, GByteArray *mem_buf,
> int n)
> {
> @@ -303,8 +291,6 @@ static int cpu_write_virt_kvm_reg(CPUS390XState *env,
> uint8_t *mem_buf, int n)
> #define S390_GS_GSD_REGNUM 1
> #define S390_GS_GSSM_REGNUM 2
> #define S390_GS_GSEPLA_REGNUM 3
> -/* total number of registers in s390-gs.xml */
> -#define S390_NUM_GS_REGS 4
>
> static int cpu_read_gs_reg(CPUS390XState *env, GByteArray *buf, int n)
> {
> @@ -322,33 +308,33 @@ void s390_cpu_gdb_init(CPUState *cs)
> {
> gdb_register_coprocessor(cs, cpu_read_ac_reg,
> cpu_write_ac_reg,
> - S390_NUM_AC_REGS, "s390-acr.xml", 0);
> + gdb_find_static_feature("s390-acr.xml"), 0);
>
> gdb_register_coprocessor(cs, cpu_read_fp_reg,
> cpu_write_fp_reg,
> - S390_NUM_FP_REGS, "s390-fpr.xml", 0);
> + gdb_find_static_feature("s390-fpr.xml"), 0);
>
> gdb_register_coprocessor(cs, cpu_read_vreg,
> cpu_write_vreg,
> - S390_NUM_VREGS, "s390-vx.xml", 0);
> + gdb_find_static_feature("s390-vx.xml"), 0);
>
> gdb_register_coprocessor(cs, cpu_read_gs_reg,
> cpu_write_gs_reg,
> - S390_NUM_GS_REGS, "s390-gs.xml", 0);
> + gdb_find_static_feature("s390-gs.xml"), 0);
>
> #ifndef CONFIG_USER_ONLY
> gdb_register_coprocessor(cs, cpu_read_c_reg,
> cpu_write_c_reg,
> - S390_NUM_C_REGS, "s390-cr.xml", 0);
> + gdb_find_static_feature("s390-cr.xml"), 0);
>
> gdb_register_coprocessor(cs, cpu_read_virt_reg,
> cpu_write_virt_reg,
> - S390_NUM_VIRT_REGS, "s390-virt.xml", 0);
> + gdb_find_static_feature("s390-virt.xml"), 0);
>
> if (kvm_enabled()) {
> gdb_register_coprocessor(cs, cpu_read_virt_kvm_reg,
> cpu_write_virt_kvm_reg,
> - S390_NUM_VIRT_KVM_REGS, "s390-virt-kvm.xml",
> +
> gdb_find_static_feature("s390-virt-kvm.xml"),
> 0);
> }
> #endif
>
> --
> 2.43.0
>
>
- [PATCH v17 00/14] plugins: Allow to read registers, Akihiko Odaki, 2023/12/13
- [PATCH v17 01/14] target/arm: Use GDBFeature for dynamic XML, Akihiko Odaki, 2023/12/13
- [PATCH v17 02/14] target/ppc: Use GDBFeature for dynamic XML, Akihiko Odaki, 2023/12/13
- [PATCH v17 03/14] target/riscv: Use GDBFeature for dynamic XML, Akihiko Odaki, 2023/12/13
- [PATCH v17 04/14] gdbstub: Use GDBFeature for gdb_register_coprocessor, Akihiko Odaki, 2023/12/13
- Re: [PATCH v17 04/14] gdbstub: Use GDBFeature for gdb_register_coprocessor,
Alistair Francis <=
- [PATCH v17 05/14] gdbstub: Use GDBFeature for GDBRegisterState, Akihiko Odaki, 2023/12/13
- [PATCH v17 06/14] gdbstub: Change gdb_get_reg_cb and gdb_set_reg_cb, Akihiko Odaki, 2023/12/13
- [PATCH v17 07/14] gdbstub: Simplify XML lookup, Akihiko Odaki, 2023/12/13
- [PATCH v17 08/14] gdbstub: Infer number of core registers from XML, Akihiko Odaki, 2023/12/13
- [PATCH v17 09/14] hw/core/cpu: Remove gdb_get_dynamic_xml member, Akihiko Odaki, 2023/12/13
- [PATCH v17 10/14] gdbstub: Add members to identify registers to GDBFeature, Akihiko Odaki, 2023/12/13
- [PATCH v17 11/14] gdbstub: Expose functions to read registers, Akihiko Odaki, 2023/12/13