[PATCH v2 03/11] acpi: add aml_create_field()

[Xiao Guangrong <guangrong.xiao@linux.intel.com>]

It will be used by nvdimm acpi

Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
---
 hw/acpi/aml-build.c         | 13 +++++++++++++
 include/hw/acpi/aml-build.h |  1 +
 2 files changed, 14 insertions(+)

diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index 78e1290..97c9efb 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -1001,6 +1001,19 @@ Aml *create_field_common(int opcode, Aml *srcbuf, Aml *index, const char *name)
     return var;
 }
 
+/* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefCreateField */
+Aml *aml_create_field(Aml *srcbuf, Aml *index, Aml *len, const char *name)
+{
+    Aml *var = aml_alloc();
+    build_append_byte(var->buf, 0x5B); /* ExtOpPrefix */
+    build_append_byte(var->buf, 0x13); /* CreateFieldOp */
+    aml_append(var, srcbuf);
+    aml_append(var, index);
+    aml_append(var, len);
+    build_append_namestring(var->buf, "%s", name);
+    return var;
+}
+
 /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefCreateDWordField */
 Aml *aml_create_dword_field(Aml *srcbuf, Aml *index, const char *name)
 {
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index 6d6f705..e1ba534 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -346,6 +346,7 @@ Aml *aml_mutex(const char *name, uint8_t sync_level);
 Aml *aml_acquire(Aml *mutex, uint16_t timeout);
 Aml *aml_release(Aml *mutex);
 Aml *aml_alias(const char *source_object, const char *alias_object);
+Aml *aml_create_field(Aml *srcbuf, Aml *index, Aml *len, const char *name);
 Aml *aml_create_dword_field(Aml *srcbuf, Aml *index, const char *name);
 Aml *aml_create_qword_field(Aml *srcbuf, Aml *index, const char *name);
 Aml *aml_varpackage(uint32_t num_elements);
-- 
1.8.3.1