[PATCH v6 13/18] cpu: Move CPUClass::write_elf* to SysemuCPUOps

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

The write_elf*() handlers are used to dump vmcore images.
This feature is only meaningful for system emulation.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 include/hw/core/cpu.h            | 17 -----------------
 include/hw/core/sysemu-cpu-ops.h | 24 ++++++++++++++++++++++++
 hw/core/cpu.c                    | 16 ++++++++--------
 target/arm/cpu.c                 |  4 ++--
 target/i386/cpu.c                |  8 ++++----
 target/riscv/cpu.c               |  4 ++--
 target/s390x/cpu.c               |  2 +-
 target/ppc/translate_init.c.inc  |  6 ++----
 8 files changed, 43 insertions(+), 38 deletions(-)

diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h
index 4289cd0d78a..b7095bc4192 100644
--- a/include/hw/core/cpu.h
+++ b/include/hw/core/cpu.h
@@ -112,14 +112,6 @@ struct AccelCPUClass;
  *       a memory access with the specified memory transaction attributes.
  * @gdb_read_register: Callback for letting GDB read a register.
  * @gdb_write_register: Callback for letting GDB write a register.
- * @write_elf64_note: Callback for writing a CPU-specific ELF note to a
- * 64-bit VM coredump.
- * @write_elf32_qemunote: Callback for writing a CPU- and QEMU-specific ELF
- * note to a 32-bit VM coredump.
- * @write_elf32_note: Callback for writing a CPU-specific ELF note to a
- * 32-bit VM coredump.
- * @write_elf32_qemunote: Callback for writing a CPU- and QEMU-specific ELF
- * note to a 32-bit VM coredump.
  * @gdb_num_core_regs: Number of core registers accessible to GDB.
  * @gdb_core_xml_file: File name for core registers GDB XML description.
  * @gdb_stop_before_watchpoint: Indicates whether GDB expects the CPU to stop
@@ -163,15 +155,6 @@ struct CPUClass {
     int (*gdb_read_register)(CPUState *cpu, GByteArray *buf, int reg);
     int (*gdb_write_register)(CPUState *cpu, uint8_t *buf, int reg);
 
-    int (*write_elf64_note)(WriteCoreDumpFunction f, CPUState *cpu,
-                            int cpuid, void *opaque);
-    int (*write_elf64_qemunote)(WriteCoreDumpFunction f, CPUState *cpu,
-                                void *opaque);
-    int (*write_elf32_note)(WriteCoreDumpFunction f, CPUState *cpu,
-                            int cpuid, void *opaque);
-    int (*write_elf32_qemunote)(WriteCoreDumpFunction f, CPUState *cpu,
-                                void *opaque);
-
     const char *gdb_core_xml_file;
     gchar * (*gdb_arch_name)(CPUState *cpu);
     const char * (*gdb_get_dynamic_xml)(CPUState *cpu, const char *xmlname);
diff --git a/include/hw/core/sysemu-cpu-ops.h b/include/hw/core/sysemu-cpu-ops.h
index f7a91a66e06..bdc76d580e9 100644
--- a/include/hw/core/sysemu-cpu-ops.h
+++ b/include/hw/core/sysemu-cpu-ops.h
@@ -21,6 +21,30 @@ typedef struct SysemuCPUOps {
      * GUEST_PANICKED events.
      */
     GuestPanicInformation* (*get_crash_info)(CPUState *cpu);
+    /**
+     * @write_elf32_note: Callback for writing a CPU-specific ELF note to a
+     * 32-bit VM coredump.
+     */
+    int (*write_elf32_note)(WriteCoreDumpFunction f, CPUState *cpu,
+                            int cpuid, void *opaque);
+    /**
+     * @write_elf64_note: Callback for writing a CPU-specific ELF note to a
+     * 64-bit VM coredump.
+     */
+    int (*write_elf64_note)(WriteCoreDumpFunction f, CPUState *cpu,
+                            int cpuid, void *opaque);
+    /**
+     * @write_elf32_qemunote: Callback for writing a CPU- and QEMU-specific ELF
+     * note to a 32-bit VM coredump.
+     */
+    int (*write_elf32_qemunote)(WriteCoreDumpFunction f, CPUState *cpu,
+                                void *opaque);
+    /**
+     * @write_elf64_qemunote: Callback for writing a CPU- and QEMU-specific ELF
+     * note to a 64-bit VM coredump.
+     */
+    int (*write_elf64_qemunote)(WriteCoreDumpFunction f, CPUState *cpu,
+                                void *opaque);
     /**
      * @virtio_is_big_endian: Callback to return %true if a CPU which supports
      *       runtime configurable endianness is currently big-endian.
diff --git a/hw/core/cpu.c b/hw/core/cpu.c
index 0aebc18c41f..c74390aafbf 100644
--- a/hw/core/cpu.c
+++ b/hw/core/cpu.c
@@ -151,10 +151,10 @@ int cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
 {
     CPUClass *cc = CPU_GET_CLASS(cpu);
 
-    if (!cc->write_elf32_qemunote) {
+    if (!cc->sysemu_ops->write_elf32_qemunote) {
         return 0;
     }
-    return (*cc->write_elf32_qemunote)(f, cpu, opaque);
+    return (*cc->sysemu_ops->write_elf32_qemunote)(f, cpu, opaque);
 }
 
 int cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu,
@@ -162,10 +162,10 @@ int cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu,
 {
     CPUClass *cc = CPU_GET_CLASS(cpu);
 
-    if (!cc->write_elf32_note) {
+    if (!cc->sysemu_ops->write_elf32_note) {
         return -1;
     }
-    return (*cc->write_elf32_note)(f, cpu, cpuid, opaque);
+    return (*cc->sysemu_ops->write_elf32_note)(f, cpu, cpuid, opaque);
 }
 
 int cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
@@ -173,10 +173,10 @@ int cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
 {
     CPUClass *cc = CPU_GET_CLASS(cpu);
 
-    if (!cc->write_elf64_qemunote) {
+    if (!cc->sysemu_ops->write_elf64_qemunote) {
         return 0;
     }
-    return (*cc->write_elf64_qemunote)(f, cpu, opaque);
+    return (*cc->sysemu_ops->write_elf64_qemunote)(f, cpu, opaque);
 }
 
 int cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu,
@@ -184,10 +184,10 @@ int cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu,
 {
     CPUClass *cc = CPU_GET_CLASS(cpu);
 
-    if (!cc->write_elf64_note) {
+    if (!cc->sysemu_ops->write_elf64_note) {
         return -1;
     }
-    return (*cc->write_elf64_note)(f, cpu, cpuid, opaque);
+    return (*cc->sysemu_ops->write_elf64_note)(f, cpu, cpuid, opaque);
 }
 
 static int cpu_common_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg)
diff --git a/target/arm/cpu.c b/target/arm/cpu.c
index d071ae72ba3..cbfdb9d0b70 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -1945,6 +1945,8 @@ static gchar *arm_gdb_arch_name(CPUState *cs)
 
 #ifndef CONFIG_USER_ONLY
 static const struct SysemuCPUOps arm_sysemu_ops = {
+    .write_elf32_note = arm_cpu_write_elf32_note,
+    .write_elf64_note = arm_cpu_write_elf64_note,
     .virtio_is_big_endian = arm_cpu_virtio_is_big_endian,
     .legacy_vmsd = &vmstate_arm_cpu,
 };
@@ -1989,8 +1991,6 @@ static void arm_cpu_class_init(ObjectClass *oc, void *data)
 #ifndef CONFIG_USER_ONLY
     cc->get_phys_page_attrs_debug = arm_cpu_get_phys_page_attrs_debug;
     cc->asidx_from_attrs = arm_asidx_from_attrs;
-    cc->write_elf64_note = arm_cpu_write_elf64_note;
-    cc->write_elf32_note = arm_cpu_write_elf32_note;
     cc->sysemu_ops = &arm_sysemu_ops;
 #endif
     cc->gdb_num_core_regs = 26;
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index ab0c07fe9b4..fd7788907ea 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -7394,6 +7394,10 @@ static Property x86_cpu_properties[] = {
 #ifndef CONFIG_USER_ONLY
 static const struct SysemuCPUOps i386_sysemu_ops = {
     .get_crash_info = x86_cpu_get_crash_info,
+    .write_elf32_note = x86_cpu_write_elf32_note,
+    .write_elf64_note = x86_cpu_write_elf64_note,
+    .write_elf32_qemunote = x86_cpu_write_elf32_qemunote,
+    .write_elf64_qemunote = x86_cpu_write_elf64_qemunote,
     .legacy_vmsd = &vmstate_x86_cpu,
 };
 #endif
@@ -7433,10 +7437,6 @@ static void x86_cpu_common_class_init(ObjectClass *oc, void *data)
     cc->asidx_from_attrs = x86_asidx_from_attrs;
     cc->get_memory_mapping = x86_cpu_get_memory_mapping;
     cc->get_phys_page_attrs_debug = x86_cpu_get_phys_page_attrs_debug;
-    cc->write_elf64_note = x86_cpu_write_elf64_note;
-    cc->write_elf64_qemunote = x86_cpu_write_elf64_qemunote;
-    cc->write_elf32_note = x86_cpu_write_elf32_note;
-    cc->write_elf32_qemunote = x86_cpu_write_elf32_qemunote;
     cc->sysemu_ops = &i386_sysemu_ops;
 #endif /* !CONFIG_USER_ONLY */
 
diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 5514e23c1d2..cacec059754 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -583,6 +583,8 @@ static const char *riscv_gdb_get_dynamic_xml(CPUState *cs, const char *xmlname)
 
 #ifndef CONFIG_USER_ONLY
 static const struct SysemuCPUOps riscv_sysemu_ops = {
+    .write_elf64_note = riscv_cpu_write_elf64_note,
+    .write_elf32_note = riscv_cpu_write_elf32_note,
     /* For now, mark unmigratable: */
     .legacy_vmsd = &vmstate_riscv_cpu,
 };
@@ -631,8 +633,6 @@ static void riscv_cpu_class_init(ObjectClass *c, void *data)
 #ifndef CONFIG_USER_ONLY
     cc->get_phys_page_debug = riscv_cpu_get_phys_page_debug;
     cc->sysemu_ops = &riscv_sysemu_ops;
-    cc->write_elf64_note = riscv_cpu_write_elf64_note;
-    cc->write_elf32_note = riscv_cpu_write_elf32_note;
 #endif
     cc->gdb_arch_name = riscv_gdb_arch_name;
     cc->gdb_get_dynamic_xml = riscv_gdb_get_dynamic_xml;
diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c
index 55d7a727602..afb55be5c8c 100644
--- a/target/s390x/cpu.c
+++ b/target/s390x/cpu.c
@@ -480,6 +480,7 @@ static void s390_cpu_reset_full(DeviceState *dev)
 #ifndef CONFIG_USER_ONLY
 static const struct SysemuCPUOps s390_sysemu_ops = {
     .get_crash_info = s390_cpu_get_crash_info,
+    .write_elf64_note = s390_cpu_write_elf64_note,
     .legacy_vmsd = &vmstate_s390_cpu,
 };
 #endif
@@ -524,7 +525,6 @@ static void s390_cpu_class_init(ObjectClass *oc, void *data)
     cc->gdb_write_register = s390_cpu_gdb_write_register;
 #ifndef CONFIG_USER_ONLY
     cc->get_phys_page_debug = s390_cpu_get_phys_page_debug;
-    cc->write_elf64_note = s390_cpu_write_elf64_note;
     cc->sysemu_ops = &s390_sysemu_ops;
 #endif
     cc->disas_set_info = s390_cpu_disas_set_info;
diff --git a/target/ppc/translate_init.c.inc b/target/ppc/translate_init.c.inc
index 8d6bc6c0087..b348b08868d 100644
--- a/target/ppc/translate_init.c.inc
+++ b/target/ppc/translate_init.c.inc
@@ -10880,6 +10880,8 @@ static Property ppc_cpu_properties[] = {
 
 #ifndef CONFIG_USER_ONLY
 static const struct SysemuCPUOps ppc_sysemu_ops = {
+    .write_elf32_note = ppc32_cpu_write_elf32_note,
+    .write_elf64_note = ppc64_cpu_write_elf64_note,
     .virtio_is_big_endian = ppc_cpu_is_big_endian,
     .legacy_vmsd = &vmstate_ppc_cpu,
 };
@@ -10929,10 +10931,6 @@ static void ppc_cpu_class_init(ObjectClass *oc, void *data)
     cc->get_phys_page_debug = ppc_cpu_get_phys_page_debug;
     cc->sysemu_ops = &ppc_sysemu_ops;
 #endif
-#if defined(CONFIG_SOFTMMU)
-    cc->write_elf64_note = ppc64_cpu_write_elf64_note;
-    cc->write_elf32_note = ppc32_cpu_write_elf32_note;
-#endif
 
     cc->gdb_num_core_regs = 71;
 #ifndef CONFIG_USER_ONLY
-- 
2.26.3