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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [RFC PATCH] cpu: system_ops: move to cpu-system-ops.h, keep a pointer in CPUClass
Similarly to commit 78271684719 ("cpu: tcg_ops: move to tcg-cpu-ops.h,
keep a pointer in CPUClass"):
We cannot in principle make the SysEmu Operations field definitions
conditional on CONFIG_SOFTMMU in code that is included by both
common_ss and specific_ss modules.
Therefore, what we can do safely to restrict the SysEmu fields to
system emulation builds, is to move all sysemu operations into a
separate header file, which is only included by system-specific code.
This leaves just a NULL pointer in the cpu.h for the user-mode builds.
Inspired-by: Claudio Fontana <cfontana@xxxxxxx>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@xxxxxxxxx>
---
RFC: Only ARM updated to get review before keep going with the other
targets.
Based-on: <20210226163227.4097950-1-f4bug@xxxxxxxxx>
---
include/hw/core/cpu-system-ops.h | 89 ++++++++++++++++++++++++++++++++
include/hw/core/cpu.h | 77 ++-------------------------
cpu.c | 13 ++---
hw/core/cpu.c | 43 +++++++--------
hw/core/qdev.c | 1 +
monitor/misc.c | 1 +
softmmu/physmem.c | 1 +
stubs/xen-hw-stub.c | 1 +
target/arm/cpu.c | 24 ++++++---
9 files changed, 141 insertions(+), 109 deletions(-)
create mode 100644 include/hw/core/cpu-system-ops.h
diff --git a/include/hw/core/cpu-system-ops.h b/include/hw/core/cpu-system-ops.h
new file mode 100644
index 00000000000..1554ccbdf07
--- /dev/null
+++ b/include/hw/core/cpu-system-ops.h
@@ -0,0 +1,89 @@
+/*
+ * CPU operations specific to system emulation
+ *
+ * Copyright (c) 2012 SUSE LINUX Products GmbH
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef CPU_SYSTEM_OPS_H
+#define CPU_SYSTEM_OPS_H
+
+#include "hw/core/cpu.h"
+
+/*
+ * struct CPUSystemOperations: System operations specific to a CPU class
+ */
+typedef struct CPUSystemOperations {
+ /**
+ * @get_memory_mapping: Callback for obtaining the memory mappings.
+ */
+ void (*get_memory_mapping)(CPUState *cpu, MemoryMappingList *list,
+ Error **errp);
+ /**
+ * @get_paging_enabled: Callback for inquiring whether paging is enabled.
+ */
+ bool (*get_paging_enabled)(const CPUState *cpu);
+ /**
+ * @get_phys_page_debug: Callback for obtaining a physical address.
+ */
+ hwaddr (*get_phys_page_debug)(CPUState *cpu, vaddr addr);
+ /**
+ * @get_phys_page_attrs_debug: Callback for obtaining a physical address
+ * and the associated memory transaction attributes to use for the
+ * access.
+ * CPUs which use memory transaction attributes should implement this
+ * instead of get_phys_page_debug.
+ */
+ hwaddr (*get_phys_page_attrs_debug)(CPUState *cpu, vaddr addr,
+ MemTxAttrs *attrs);
+ /**
+ * @asidx_from_attrs: Callback to return the CPU AddressSpace to use for
+ * a memory access with the specified memory transaction attributes.
+ */
+ int (*asidx_from_attrs)(CPUState *cpu, MemTxAttrs attrs);
+ /**
+ * @get_crash_info: Callback for reporting guest crash information in
+ * 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.
+ * Non-configurable CPUs can use the default implementation of this method.
+ * This method should not be used by any callers other than the pre-1.0
+ * virtio devices.
+ */
+ bool (*virtio_is_big_endian)(CPUState *cpu);
+ /**
+ * @vmsd: State description for migration.
+ */
+ const VMStateDescription *vmsd;
+} CPUSystemOperations;
+
+#endif /* CPU_SYSTEM_OPS_H */
diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h
index 29e1623f775..ef65011f206 100644
--- a/include/hw/core/cpu.h
+++ b/include/hw/core/cpu.h
@@ -80,79 +80,8 @@ struct TCGCPUOps;
/* see accel-cpu.h */
struct AccelCPUClass;
-/*
- * struct CPUSystemOperations: System operations specific to a CPU class
- */
-typedef struct CPUSystemOperations {
- /**
- * @get_memory_mapping: Callback for obtaining the memory mappings.
- */
- void (*get_memory_mapping)(CPUState *cpu, MemoryMappingList *list,
- Error **errp);
- /**
- * @get_paging_enabled: Callback for inquiring whether paging is enabled.
- */
- bool (*get_paging_enabled)(const CPUState *cpu);
- /**
- * @get_phys_page_debug: Callback for obtaining a physical address.
- */
- hwaddr (*get_phys_page_debug)(CPUState *cpu, vaddr addr);
- /**
- * @get_phys_page_attrs_debug: Callback for obtaining a physical address
- * and the associated memory transaction attributes to use for the
- * access.
- * CPUs which use memory transaction attributes should implement this
- * instead of get_phys_page_debug.
- */
- hwaddr (*get_phys_page_attrs_debug)(CPUState *cpu, vaddr addr,
- MemTxAttrs *attrs);
- /**
- * @asidx_from_attrs: Callback to return the CPU AddressSpace to use for
- * a memory access with the specified memory transaction attributes.
- */
- int (*asidx_from_attrs)(CPUState *cpu, MemTxAttrs attrs);
- /**
- * @get_crash_info: Callback for reporting guest crash information in
- * 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.
- * Non-configurable CPUs can use the default implementation of this method.
- * This method should not be used by any callers other than the pre-1.0
- * virtio devices.
- */
- bool (*virtio_is_big_endian)(CPUState *cpu);
- /**
- * @vmsd: State description for migration.
- */
- const VMStateDescription *vmsd;
-} CPUSystemOperations;
+/* see cpu-system-ops.h */
+struct CPUSystemOperations;
/**
* CPUClass:
@@ -224,7 +153,7 @@ struct CPUClass {
struct AccelCPUClass *accel_cpu;
/* when system emulation is not available, this pointer is NULL */
- struct CPUSystemOperations system_ops;
+ struct CPUSystemOperations *system_ops;
/* when TCG is not available, this pointer is NULL */
struct TCGCPUOps *tcg_ops;
diff --git a/cpu.c b/cpu.c
index 619b8c14f94..9a1792edaec 100644
--- a/cpu.c
+++ b/cpu.c
@@ -36,6 +36,7 @@
#include "sysemu/replay.h"
#include "exec/translate-all.h"
#include "exec/log.h"
+#include "hw/core/cpu-system-ops.h"
uintptr_t qemu_host_page_size;
intptr_t qemu_host_page_mask;
@@ -138,13 +139,13 @@ void cpu_exec_realizefn(CPUState *cpu, Error **errp)
#endif /* CONFIG_TCG */
#ifdef CONFIG_USER_ONLY
- assert(cc->system_ops.vmsd == NULL);
+ assert(cc->system_ops->vmsd == NULL);
#else
if (qdev_get_vmsd(DEVICE(cpu)) == NULL) {
vmstate_register(NULL, cpu->cpu_index, &vmstate_cpu_common, cpu);
}
- if (cc->system_ops.vmsd != NULL) {
- vmstate_register(NULL, cpu->cpu_index, cc->system_ops.vmsd, cpu);
+ if (cc->system_ops->vmsd != NULL) {
+ vmstate_register(NULL, cpu->cpu_index, cc->system_ops->vmsd, cpu);
}
#endif /* CONFIG_USER_ONLY */
}
@@ -154,10 +155,10 @@ void cpu_exec_unrealizefn(CPUState *cpu)
CPUClass *cc = CPU_GET_CLASS(cpu);
#ifdef CONFIG_USER_ONLY
- assert(cc->system_ops.vmsd == NULL);
+ assert(cc->system_ops->vmsd == NULL);
#else
- if (cc->system_ops.vmsd != NULL) {
- vmstate_unregister(NULL, cc->system_ops.vmsd, cpu);
+ if (cc->system_ops->vmsd != NULL) {
+ vmstate_unregister(NULL, cc->system_ops->vmsd, cpu);
}
if (qdev_get_vmsd(DEVICE(cpu)) == NULL) {
vmstate_unregister(NULL, &vmstate_cpu_common, cpu);
diff --git a/hw/core/cpu.c b/hw/core/cpu.c
index 8bd7bda6b0b..0c58d81b6a5 100644
--- a/hw/core/cpu.c
+++ b/hw/core/cpu.c
@@ -21,6 +21,7 @@
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "hw/core/cpu.h"
+#include "hw/core/cpu-system-ops.h"
#include "sysemu/hw_accel.h"
#include "qemu/notify.h"
#include "qemu/log.h"
@@ -71,8 +72,8 @@ bool cpu_paging_enabled(const CPUState *cpu)
{
CPUClass *cc = CPU_GET_CLASS(cpu);
- if (cc->system_ops.get_paging_enabled) {
- return cc->system_ops.get_paging_enabled(cpu);
+ if (cc->system_ops->get_paging_enabled) {
+ return cc->system_ops->get_paging_enabled(cpu);
}
return false;
@@ -83,8 +84,8 @@ void cpu_get_memory_mapping(CPUState *cpu, MemoryMappingList
*list,
{
CPUClass *cc = CPU_GET_CLASS(cpu);
- if (cc->system_ops.get_memory_mapping) {
- cc->system_ops.get_memory_mapping(cpu, list, errp);
+ if (cc->system_ops->get_memory_mapping) {
+ cc->system_ops->get_memory_mapping(cpu, list, errp);
return;
}
@@ -96,12 +97,12 @@ hwaddr cpu_get_phys_page_attrs_debug(CPUState *cpu, vaddr
addr,
{
CPUClass *cc = CPU_GET_CLASS(cpu);
- if (cc->system_ops.get_phys_page_attrs_debug) {
- return cc->system_ops.get_phys_page_attrs_debug(cpu, addr, attrs);
+ if (cc->system_ops->get_phys_page_attrs_debug) {
+ return cc->system_ops->get_phys_page_attrs_debug(cpu, addr, attrs);
}
/* Fallback for CPUs which don't implement the _attrs_ hook */
*attrs = MEMTXATTRS_UNSPECIFIED;
- return cc->system_ops.get_phys_page_debug(cpu, addr);
+ return cc->system_ops->get_phys_page_debug(cpu, addr);
}
hwaddr cpu_get_phys_page_debug(CPUState *cpu, vaddr addr)
@@ -116,8 +117,8 @@ int cpu_asidx_from_attrs(CPUState *cpu, MemTxAttrs attrs)
CPUClass *cc = CPU_GET_CLASS(cpu);
int ret = 0;
- if (cc->system_ops.asidx_from_attrs) {
- ret = cc->system_ops.asidx_from_attrs(cpu, attrs);
+ if (cc->system_ops->asidx_from_attrs) {
+ ret = cc->system_ops->asidx_from_attrs(cpu, attrs);
assert(ret < cpu->num_ases && ret >= 0);
}
return ret;
@@ -151,10 +152,10 @@ int cpu_write_elf32_qemunote(WriteCoreDumpFunction f,
CPUState *cpu,
{
CPUClass *cc = CPU_GET_CLASS(cpu);
- if (!cc->system_ops.write_elf32_qemunote) {
+ if (!cc->system_ops->write_elf32_qemunote) {
return 0;
}
- return (*cc->system_ops.write_elf32_qemunote)(f, cpu, opaque);
+ return (*cc->system_ops->write_elf32_qemunote)(f, cpu, opaque);
}
int cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu,
@@ -162,10 +163,10 @@ int cpu_write_elf32_note(WriteCoreDumpFunction f,
CPUState *cpu,
{
CPUClass *cc = CPU_GET_CLASS(cpu);
- if (!cc->system_ops.write_elf32_note) {
+ if (!cc->system_ops->write_elf32_note) {
return -1;
}
- return (*cc->system_ops.write_elf32_note)(f, cpu, cpuid, opaque);
+ return (*cc->system_ops->write_elf32_note)(f, cpu, cpuid, opaque);
}
int cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
@@ -173,10 +174,10 @@ int cpu_write_elf64_qemunote(WriteCoreDumpFunction f,
CPUState *cpu,
{
CPUClass *cc = CPU_GET_CLASS(cpu);
- if (!cc->system_ops.write_elf64_qemunote) {
+ if (!cc->system_ops->write_elf64_qemunote) {
return 0;
}
- return (*cc->system_ops.write_elf64_qemunote)(f, cpu, opaque);
+ return (*cc->system_ops->write_elf64_qemunote)(f, cpu, opaque);
}
int cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu,
@@ -184,10 +185,10 @@ int cpu_write_elf64_note(WriteCoreDumpFunction f,
CPUState *cpu,
{
CPUClass *cc = CPU_GET_CLASS(cpu);
- if (!cc->system_ops.write_elf64_note) {
+ if (!cc->system_ops->write_elf64_note) {
return -1;
}
- return (*cc->system_ops.write_elf64_note)(f, cpu, cpuid, opaque);
+ return (*cc->system_ops->write_elf64_note)(f, cpu, cpuid, opaque);
}
static int cpu_common_gdb_read_register(CPUState *cpu, GByteArray *buf, int
reg)
@@ -204,8 +205,8 @@ bool cpu_virtio_is_big_endian(CPUState *cpu)
{
CPUClass *cc = CPU_GET_CLASS(cpu);
- if (cc->system_ops.virtio_is_big_endian) {
- return cc->system_ops.virtio_is_big_endian(cpu);
+ if (cc->system_ops->virtio_is_big_endian) {
+ return cc->system_ops->virtio_is_big_endian(cpu);
}
return target_words_bigendian();
}
@@ -220,8 +221,8 @@ GuestPanicInformation *cpu_get_crash_info(CPUState *cpu)
CPUClass *cc = CPU_GET_CLASS(cpu);
GuestPanicInformation *res = NULL;
- if (cc->system_ops.get_crash_info) {
- res = cc->system_ops.get_crash_info(cpu);
+ if (cc->system_ops->get_crash_info) {
+ res = cc->system_ops->get_crash_info(cpu);
}
return res;
}
diff --git a/hw/core/qdev.c b/hw/core/qdev.c
index cefc5eaa0a9..b2de42ed6ce 100644
--- a/hw/core/qdev.c
+++ b/hw/core/qdev.c
@@ -38,6 +38,7 @@
#include "hw/boards.h"
#include "hw/sysbus.h"
#include "hw/qdev-clock.h"
+#include "hw/core/cpu-system-ops.h"
#include "migration/vmstate.h"
#include "trace.h"
diff --git a/monitor/misc.c b/monitor/misc.c
index a7650ed7470..8feb34c1633 100644
--- a/monitor/misc.c
+++ b/monitor/misc.c
@@ -77,6 +77,7 @@
#include "qapi/qmp-event.h"
#include "sysemu/cpus.h"
#include "qemu/cutils.h"
+#include "hw/core/cpu-system-ops.h"
#if defined(TARGET_S390X)
#include "hw/s390x/storage-keys.h"
diff --git a/softmmu/physmem.c b/softmmu/physmem.c
index 19e0aa9836a..06b72bee2d7 100644
--- a/softmmu/physmem.c
+++ b/softmmu/physmem.c
@@ -28,6 +28,7 @@
#ifdef CONFIG_TCG
#include "hw/core/tcg-cpu-ops.h"
#endif /* CONFIG_TCG */
+#include "hw/core/cpu-system-ops.h"
#include "exec/exec-all.h"
#include "exec/target_page.h"
diff --git a/stubs/xen-hw-stub.c b/stubs/xen-hw-stub.c
index 15f3921a76b..2af9c1de9d9 100644
--- a/stubs/xen-hw-stub.c
+++ b/stubs/xen-hw-stub.c
@@ -7,6 +7,7 @@
*/
#include "qemu/osdep.h"
+#include "hw/core/cpu-system-ops.h"
#include "hw/xen/xen.h"
#include "hw/xen/xen-x86.h"
diff --git a/target/arm/cpu.c b/target/arm/cpu.c
index 87a581fa47c..90fe3bfaaf3 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -2278,6 +2278,19 @@ static struct TCGCPUOps arm_tcg_ops = {
};
#endif /* CONFIG_TCG */
+#ifndef CONFIG_USER_ONLY
+#include "hw/core/cpu-system-ops.h"
+
+static struct CPUSystemOperations arm_sysemu_ops = {
+ .vmsd = &vmstate_arm_cpu,
+ .get_phys_page_attrs_debug = arm_cpu_get_phys_page_attrs_debug,
+ .asidx_from_attrs = arm_asidx_from_attrs,
+ .virtio_is_big_endian = arm_cpu_virtio_is_big_endian,
+ .write_elf64_note = arm_cpu_write_elf64_note,
+ .write_elf32_note = arm_cpu_write_elf32_note,
+};
+#endif
+
static void arm_cpu_class_init(ObjectClass *oc, void *data)
{
ARMCPUClass *acc = ARM_CPU_CLASS(oc);
@@ -2296,14 +2309,6 @@ static void arm_cpu_class_init(ObjectClass *oc, void
*data)
cc->set_pc = arm_cpu_set_pc;
cc->gdb_read_register = arm_cpu_gdb_read_register;
cc->gdb_write_register = arm_cpu_gdb_write_register;
-#ifndef CONFIG_USER_ONLY
- cc->system_ops.get_phys_page_attrs_debug =
arm_cpu_get_phys_page_attrs_debug;
- cc->system_ops.asidx_from_attrs = arm_asidx_from_attrs;
- cc->system_ops.vmsd = &vmstate_arm_cpu;
- cc->system_ops.virtio_is_big_endian = arm_cpu_virtio_is_big_endian;
- cc->system_ops.write_elf64_note = arm_cpu_write_elf64_note;
- cc->system_ops.write_elf32_note = arm_cpu_write_elf32_note;
-#endif
cc->gdb_num_core_regs = 26;
cc->gdb_core_xml_file = "arm-core.xml";
cc->gdb_arch_name = arm_gdb_arch_name;
@@ -2314,6 +2319,9 @@ static void arm_cpu_class_init(ObjectClass *oc, void
*data)
#ifdef CONFIG_TCG
cc->tcg_ops = &arm_tcg_ops;
#endif /* CONFIG_TCG */
+#ifndef CONFIG_USER_ONLY
+ cc->system_ops = &arm_sysemu_ops;
+#endif
}
#ifdef CONFIG_KVM
--
2.26.2
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