[Qemu-devel] [PATCH 17/29] cpu: Move cpu_write_elfXX_note() functions to CPUState

["Andreas Färber" <afaerber@suse.de>]

From: Jens Freimann <jfrei@linux.vnet.ibm.com>

Convert cpu_write_elfXX_note() functions to CPUClass methods and pass
CPUState as argument. Update target-i386 accordingly.

Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
[AF: Retain stubs as CPUClass' default method implementation; style changes]
Signed-off-by: Andreas Färber <afaerber@suse.de>
---
 dump-stub.c             | 28 ----------------------
 dump.c                  |  8 +++----
 include/qom/cpu.h       | 49 ++++++++++++++++++++++++++++++++++++++
 include/sysemu/dump.h   |  9 -------
 qom/cpu.c               | 63 +++++++++++++++++++++++++++++++++++++++++++++++++
 target-i386/arch_dump.c | 38 ++++++++++++++++-------------
 target-i386/cpu-qom.h   |  9 +++++++
 target-i386/cpu.c       |  6 +++++
 8 files changed, 153 insertions(+), 57 deletions(-)

diff --git a/dump-stub.c b/dump-stub.c
index a9d0b3c..b3f42cb 100644
--- a/dump-stub.c
+++ b/dump-stub.c
@@ -24,34 +24,6 @@ void qmp_dump_guest_memory(bool paging, const char *file, bool has_begin,
     error_set(errp, QERR_UNSUPPORTED);
 }
 
-int cpu_write_elf64_note(write_core_dump_function f,
-                                       CPUArchState *env, int cpuid,
-                                       void *opaque)
-{
-    return -1;
-}
-
-int cpu_write_elf32_note(write_core_dump_function f,
-                                       CPUArchState *env, int cpuid,
-                                       void *opaque)
-{
-    return -1;
-}
-
-int cpu_write_elf64_qemunote(write_core_dump_function f,
-                                           CPUArchState *env,
-                                           void *opaque)
-{
-    return -1;
-}
-
-int cpu_write_elf32_qemunote(write_core_dump_function f,
-                                           CPUArchState *env,
-                                           void *opaque)
-{
-    return -1;
-}
-
 int cpu_get_dump_info(ArchDumpInfo *info)
 {
     return -1;
diff --git a/dump.c b/dump.c
index b34f143..c0d3da5 100644
--- a/dump.c
+++ b/dump.c
@@ -282,7 +282,7 @@ static int write_elf64_notes(DumpState *s)
     for (env = first_cpu; env != NULL; env = env->next_cpu) {
         cpu = ENV_GET_CPU(env);
         id = cpu_index(cpu);
-        ret = cpu_write_elf64_note(fd_write_vmcore, env, id, s);
+        ret = cpu_write_elf64_note(fd_write_vmcore, cpu, id, s);
         if (ret < 0) {
             dump_error(s, "dump: failed to write elf notes.\n");
             return -1;
@@ -290,7 +290,7 @@ static int write_elf64_notes(DumpState *s)
     }
 
     for (env = first_cpu; env != NULL; env = env->next_cpu) {
-        ret = cpu_write_elf64_qemunote(fd_write_vmcore, env, s);
+        ret = cpu_write_elf64_qemunote(fd_write_vmcore, cpu, s);
         if (ret < 0) {
             dump_error(s, "dump: failed to write CPU status.\n");
             return -1;
@@ -334,7 +334,7 @@ static int write_elf32_notes(DumpState *s)
     for (env = first_cpu; env != NULL; env = env->next_cpu) {
         cpu = ENV_GET_CPU(env);
         id = cpu_index(cpu);
-        ret = cpu_write_elf32_note(fd_write_vmcore, env, id, s);
+        ret = cpu_write_elf32_note(fd_write_vmcore, cpu, id, s);
         if (ret < 0) {
             dump_error(s, "dump: failed to write elf notes.\n");
             return -1;
@@ -342,7 +342,7 @@ static int write_elf32_notes(DumpState *s)
     }
 
     for (env = first_cpu; env != NULL; env = env->next_cpu) {
-        ret = cpu_write_elf32_qemunote(fd_write_vmcore, env, s);
+        ret = cpu_write_elf32_qemunote(fd_write_vmcore, cpu, s);
         if (ret < 0) {
             dump_error(s, "dump: failed to write CPU status.\n");
             return -1;
diff --git a/include/qom/cpu.h b/include/qom/cpu.h
index e54579b..7cd9442 100644
--- a/include/qom/cpu.h
+++ b/include/qom/cpu.h
@@ -24,6 +24,8 @@
 #include "hw/qdev-core.h"
 #include "qemu/thread.h"
 
+typedef int (*WriteCoreDumpFunction)(void *buf, size_t size, void *opaque);
+
 /**
  * SECTION:cpu
  * @section_id: QEMU-cpu
@@ -62,6 +64,14 @@ typedef struct CPUClass {
     int64_t (*get_arch_id)(CPUState *cpu);
 
     const struct VMStateDescription *vmsd;
+    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);
 } CPUClass;
 
 struct KVMState;
@@ -127,6 +137,45 @@ struct CPUState {
     uint32_t halted; /* used by alpha, cris, ppc TCG */
 };
 
+/**
+ * cpu_write_elf64_note:
+ * @f: pointer to a function that writes memory to a file
+ * @cpu: The CPU whose memory is to be dumped
+ * @cpuid: ID number of the CPU
+ * @opaque: pointer to the CPUState struct
+ */
+int cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu,
+                         int cpuid, void *opaque);
+
+/**
+ * cpu_write_elf64_qemunote:
+ * @f: pointer to a function that writes memory to a file
+ * @cpu: The CPU whose memory is to be dumped
+ * @cpuid: ID number of the CPU
+ * @opaque: pointer to the CPUState struct
+ */
+int cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
+                             void *opaque);
+
+/**
+ * cpu_write_elf32_note:
+ * @f: pointer to a function that writes memory to a file
+ * @cpu: The CPU whose memory is to be dumped
+ * @cpuid: ID number of the CPU
+ * @opaque: pointer to the CPUState struct
+ */
+int cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu,
+                         int cpuid, void *opaque);
+
+/**
+ * cpu_write_elf32_qemunote:
+ * @f: pointer to a function that writes memory to a file
+ * @cpu: The CPU whose memory is to be dumped
+ * @cpuid: ID number of the CPU
+ * @opaque: pointer to the CPUState struct
+ */
+int cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
+                             void *opaque);
 
 /**
  * cpu_reset:
diff --git a/include/sysemu/dump.h b/include/sysemu/dump.h
index e25b7cf..b8c770f 100644
--- a/include/sysemu/dump.h
+++ b/include/sysemu/dump.h
@@ -20,15 +20,6 @@ typedef struct ArchDumpInfo {
     int d_class;    /* ELFCLASS32 or ELFCLASS64 */
 } ArchDumpInfo;
 
-typedef int (*write_core_dump_function)(void *buf, size_t size, void *opaque);
-int cpu_write_elf64_note(write_core_dump_function f, CPUArchState *env,
-                                                  int cpuid, void *opaque);
-int cpu_write_elf32_note(write_core_dump_function f, CPUArchState *env,
-                                                  int cpuid, void *opaque);
-int cpu_write_elf64_qemunote(write_core_dump_function f, CPUArchState *env,
-                                                          void *opaque);
-int cpu_write_elf32_qemunote(write_core_dump_function f, CPUArchState *env,
-                                                          void *opaque);
 int cpu_get_dump_info(ArchDumpInfo *info);
 ssize_t cpu_get_note_size(int class, int machine, int nr_cpus);
 
diff --git a/qom/cpu.c b/qom/cpu.c
index 3dc8208..04aefbb 100644
--- a/qom/cpu.c
+++ b/qom/cpu.c
@@ -64,6 +64,65 @@ void cpu_reset_interrupt(CPUState *cpu, int mask)
     cpu->interrupt_request &= ~mask;
 }
 
+int cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
+                             void *opaque)
+{
+    CPUClass *cc = CPU_GET_CLASS(cpu);
+
+    return (*cc->write_elf32_qemunote)(f, cpu, opaque);
+}
+
+static int cpu_common_write_elf32_qemunote(WriteCoreDumpFunction f,
+                                           CPUState *cpu, void *opaque)
+{
+    return -1;
+}
+
+int cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu,
+                         int cpuid, void *opaque)
+{
+    CPUClass *cc = CPU_GET_CLASS(cpu);
+
+    return (*cc->write_elf32_note)(f, cpu, cpuid, opaque);
+}
+
+static int cpu_common_write_elf32_note(WriteCoreDumpFunction f,
+                                       CPUState *cpu, int cpuid,
+                                       void *opaque)
+{
+    return -1;
+}
+
+int cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
+                             void *opaque)
+{
+    CPUClass *cc = CPU_GET_CLASS(cpu);
+
+    return (*cc->write_elf64_qemunote)(f, cpu, opaque);
+}
+
+static int cpu_common_write_elf64_qemunote(WriteCoreDumpFunction f,
+                                           CPUState *cpu, void *opaque)
+{
+    return -1;
+}
+
+int cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu,
+                         int cpuid, void *opaque)
+{
+    CPUClass *cc = CPU_GET_CLASS(cpu);
+
+    return (*cc->write_elf64_note)(f, cpu, cpuid, opaque);
+}
+
+static int cpu_common_write_elf64_note(WriteCoreDumpFunction f,
+                                       CPUState *cpu, int cpuid,
+                                       void *opaque)
+{
+    return -1;
+}
+
+
 void cpu_reset(CPUState *cpu)
 {
     CPUClass *klass = CPU_GET_CLASS(cpu);
@@ -117,6 +176,10 @@ static void cpu_class_init(ObjectClass *klass, void *data)
     k->class_by_name = cpu_common_class_by_name;
     k->reset = cpu_common_reset;
     k->get_arch_id = cpu_common_get_arch_id;
+    k->write_elf32_qemunote = cpu_common_write_elf32_qemunote;
+    k->write_elf32_note = cpu_common_write_elf32_note;
+    k->write_elf64_qemunote = cpu_common_write_elf64_qemunote;
+    k->write_elf64_note = cpu_common_write_elf64_note;
     dc->realize = cpu_common_realizefn;
     dc->no_user = 1;
 }
diff --git a/target-i386/arch_dump.c b/target-i386/arch_dump.c
index 2cd2f7f..83898cd 100644
--- a/target-i386/arch_dump.c
+++ b/target-i386/arch_dump.c
@@ -34,7 +34,7 @@ typedef struct {
     char pad3[8];
 } x86_64_elf_prstatus;
 
-static int x86_64_write_elf64_note(write_core_dump_function f,
+static int x86_64_write_elf64_note(WriteCoreDumpFunction f,
                                    CPUArchState *env, int id,
                                    void *opaque)
 {
@@ -144,7 +144,7 @@ static void x86_fill_elf_prstatus(x86_elf_prstatus *prstatus, CPUArchState *env,
     prstatus->pid = id;
 }
 
-static int x86_write_elf64_note(write_core_dump_function f, CPUArchState *env,
+static int x86_write_elf64_note(WriteCoreDumpFunction f, CPUArchState *env,
                                 int id, void *opaque)
 {
     x86_elf_prstatus prstatus;
@@ -179,18 +179,19 @@ static int x86_write_elf64_note(write_core_dump_function f, CPUArchState *env,
     return 0;
 }
 
-int cpu_write_elf64_note(write_core_dump_function f, CPUArchState *env,
-                         int cpuid, void *opaque)
+int x86_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
+                             int cpuid, void *opaque)
 {
+    X86CPU *cpu = X86_CPU(cs);
     int ret;
 #ifdef TARGET_X86_64
     bool lma = !!(first_cpu->hflags & HF_LMA_MASK);
 
     if (lma) {
-        ret = x86_64_write_elf64_note(f, env, cpuid, opaque);
+        ret = x86_64_write_elf64_note(f, &cpu->env, cpuid, opaque);
     } else {
 #endif
-        ret = x86_write_elf64_note(f, env, cpuid, opaque);
+        ret = x86_write_elf64_note(f, &cpu->env, cpuid, opaque);
 #ifdef TARGET_X86_64
     }
 #endif
@@ -198,9 +199,10 @@ int cpu_write_elf64_note(write_core_dump_function f, CPUArchState *env,
     return ret;
 }
 
-int cpu_write_elf32_note(write_core_dump_function f, CPUArchState *env,
-                         int cpuid, void *opaque)
+int x86_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs,
+                             int cpuid, void *opaque)
 {
+    X86CPU *cpu = X86_CPU(cs);
     x86_elf_prstatus prstatus;
     Elf32_Nhdr *note;
     char *buf;
@@ -208,7 +210,7 @@ int cpu_write_elf32_note(write_core_dump_function f, CPUArchState *env,
     const char *name = "CORE";
     int ret;
 
-    x86_fill_elf_prstatus(&prstatus, env, cpuid);
+    x86_fill_elf_prstatus(&prstatus, &cpu->env, cpuid);
     descsz = sizeof(x86_elf_prstatus);
     note_size = ((sizeof(Elf32_Nhdr) + 3) / 4 + (name_size + 3) / 4 +
                 (descsz + 3) / 4) * 4;
@@ -317,7 +319,7 @@ static void qemu_get_cpustate(QEMUCPUState *s, CPUArchState *env)
     s->cr[4] = env->cr[4];
 }
 
-static inline int cpu_write_qemu_note(write_core_dump_function f,
+static inline int cpu_write_qemu_note(WriteCoreDumpFunction f,
                                       CPUArchState *env,
                                       void *opaque,
                                       int type)
@@ -370,16 +372,20 @@ static inline int cpu_write_qemu_note(write_core_dump_function f,
     return 0;
 }
 
-int cpu_write_elf64_qemunote(write_core_dump_function f, CPUArchState *env,
-                             void *opaque)
+int x86_cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cs,
+                                 void *opaque)
 {
-    return cpu_write_qemu_note(f, env, opaque, 1);
+    X86CPU *cpu = X86_CPU(cs);
+
+    return cpu_write_qemu_note(f, &cpu->env, opaque, 1);
 }
 
-int cpu_write_elf32_qemunote(write_core_dump_function f, CPUArchState *env,
-                             void *opaque)
+int x86_cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cs,
+                                 void *opaque)
 {
-    return cpu_write_qemu_note(f, env, opaque, 0);
+    X86CPU *cpu = X86_CPU(cs);
+
+    return cpu_write_qemu_note(f, &cpu->env, opaque, 0);
 }
 
 int cpu_get_dump_info(ArchDumpInfo *info)
diff --git a/target-i386/cpu-qom.h b/target-i386/cpu-qom.h
index 08f9eb6..f890f1c 100644
--- a/target-i386/cpu-qom.h
+++ b/target-i386/cpu-qom.h
@@ -86,4 +86,13 @@ extern const struct VMStateDescription vmstate_x86_cpu;
  */
 void x86_cpu_do_interrupt(CPUState *cpu);
 
+int x86_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu,
+                             int cpuid, void *opaque);
+int x86_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu,
+                             int cpuid, void *opaque);
+int x86_cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
+                                 void *opaque);
+int x86_cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
+                                 void *opaque);
+
 #endif
diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 0d9493d..40d51be 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -2351,6 +2351,12 @@ static void x86_cpu_common_class_init(ObjectClass *oc, void *data)
     cc->reset = x86_cpu_reset;
 
     cc->do_interrupt = x86_cpu_do_interrupt;
+#ifndef CONFIG_USER_ONLY
+    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;
+#endif
     cpu_class_set_vmsd(cc, &vmstate_x86_cpu);
 
     cc->get_arch_id = x86_cpu_get_arch_id;
-- 
1.8.1.4