[PATCH v2 04/18] acpi: add aml_sizeof

[Xiao Guangrong <guangrong.xiao@xxxxxxxxxxxxxxx>]

Implement SizeOf term which is used by NVDIMM _DSM method in later patch

Signed-off-by: Xiao Guangrong <guangrong.xiao@xxxxxxxxxxxxxxx>
---
 hw/acpi/aml-build.c         | 8 ++++++++
 include/hw/acpi/aml-build.h | 1 +
 2 files changed, 9 insertions(+)

diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index 9e89efc..a526eed 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -1143,6 +1143,14 @@ Aml *aml_derefof(Aml *arg)
     return var;
 }
 
+/* ACPI 6.0: 20.2.5.4 Type 2 Opcodes Encoding: DefSizeOf */
+Aml *aml_sizeof(Aml *arg)
+{
+    Aml *var = aml_opcode(0x87 /* SizeOfOp */);
+    aml_append(var, arg);
+    return var;
+}
+
 void
 build_header(GArray *linker, GArray *table_data,
              AcpiTableHeader *h, const char *sig, int len, uint8_t rev)
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index 21dc5e9..6b591ab 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -276,6 +276,7 @@ Aml *aml_varpackage(uint32_t num_elements);
 Aml *aml_touuid(const char *uuid);
 Aml *aml_unicode(const char *str);
 Aml *aml_derefof(Aml *arg);
+Aml *aml_sizeof(Aml *arg);
 
 void
 build_header(GArray *linker, GArray *table_data,
-- 
2.4.3

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