[Qemu-devel] [PATCH 04/19] acpi: aml: add aml_decrement() and aml_subtract()

[Igor Mammedov <imammedo@redhat.com>]

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
 hw/acpi/aml-build.c         | 18 ++++++++++++++++++
 include/hw/acpi/aml-build.h |  2 ++
 2 files changed, 20 insertions(+)

diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index 6e147eb..dc6e18d 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -495,6 +495,16 @@ Aml *aml_add(Aml *arg1, Aml *arg2)
     return var;
 }
 
+/* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefSubtract */
+Aml *aml_subtract(Aml *arg1, Aml *arg2)
+{
+    Aml *var = aml_opcode(0x74 /* SubtractOp */);
+    aml_append(var, arg1);
+    aml_append(var, arg2);
+    build_append_byte(var->buf, 0x00 /* NullNameOp */);
+    return var;
+}
+
 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefIncrement */
 Aml *aml_increment(Aml *arg)
 {
@@ -503,6 +513,14 @@ Aml *aml_increment(Aml *arg)
     return var;
 }
 
+/* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefDecrement */
+Aml *aml_decrement(Aml *arg)
+{
+    Aml *var = aml_opcode(0x76 /* DecrementOp */);
+    aml_append(var, arg);
+    return var;
+}
+
 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefIndex */
 Aml *aml_index(Aml *arg1, Aml *idx)
 {
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index f788a1e..4577e00 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -205,7 +205,9 @@ Aml *aml_shiftleft(Aml *arg1, Aml *count);
 Aml *aml_shiftright(Aml *arg1, Aml *count);
 Aml *aml_lless(Aml *arg1, Aml *arg2);
 Aml *aml_add(Aml *arg1, Aml *arg2);
+Aml *aml_subtract(Aml *arg1, Aml *arg2);
 Aml *aml_increment(Aml *arg);
+Aml *aml_decrement(Aml *arg);
 Aml *aml_index(Aml *arg1, Aml *idx);
 Aml *aml_notify(Aml *arg1, Aml *arg2);
 Aml *aml_call1(const char *method, Aml *arg1);
-- 
1.8.3.1