[Qemu-devel] [RFC 30/47] acpi: add acpi_equal() term

[Igor Mammedov <imammedo@redhat.com>]

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
 hw/acpi/acpi_gen_utils.c         | 11 +++++++++++
 include/hw/acpi/acpi_gen_utils.h |  1 +
 2 files changed, 12 insertions(+)

diff --git a/hw/acpi/acpi_gen_utils.c b/hw/acpi/acpi_gen_utils.c
index 985ee33..2de1ea6 100644
--- a/hw/acpi/acpi_gen_utils.c
+++ b/hw/acpi/acpi_gen_utils.c
@@ -467,6 +467,17 @@ AcpiAml acpi_io(acpiIODecode dec, uint16_t min_base, uint16_t max_base,
     return var;
 }
 
+/* ACPI 5.0: 20.2.5.4 Type 2 Opcodes Encoding: DefLEqual */
+AcpiAml acpi_equal(AcpiAml arg1, AcpiAml arg2)
+{
+    AcpiAml var = aml_allocate_internal(0, NON_BLOCK);
+    build_append_byte(var.buf, 0x93); /* LequalOp */
+    aml_append(&var, arg1);
+    aml_append(&var, arg2);
+    build_append_int(var.buf, 0x00); /* NullNameOp */
+    return var;
+}
+
 /* ACPI 5.0: 20.2.5.3 Type 1 Opcodes Encoding: DefIfElse */
 AcpiAml acpi_if(AcpiAml predicate)
 {
diff --git a/include/hw/acpi/acpi_gen_utils.h b/include/hw/acpi/acpi_gen_utils.h
index 8a21b4b..76b8d9f 100644
--- a/include/hw/acpi/acpi_gen_utils.h
+++ b/include/hw/acpi/acpi_gen_utils.h
@@ -60,6 +60,7 @@ AcpiAml acpi_operation_region(const char *name, acpiRegionSpace rs,
 AcpiAml acpi_named_field(const char *name, unsigned length);
 AcpiAml GCC_FMT_ATTR(1, 2) acpi_string(const char *name_format, ...);
 AcpiAml acpi_local0(void);
+AcpiAml acpi_equal(AcpiAml arg1, AcpiAml arg2);
 
 /* Block ASL object primitives */
 AcpiAml acpi_if(AcpiAml predicate);
-- 
1.8.3.1