uacpi: introduce a uacpi_get_aml_bitness helper

Signed-off-by: Daniil Tatianin <99danilt@gmail.com>
UltraOS · Oct 29, 2024 · f2c799f · f2c799f
1 parent df1a8af
commit f2c799f
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diff --git a/include/uacpi/uacpi.h b/include/uacpi/uacpi.h
@@ -137,6 +137,13 @@ uacpi_status uacpi_eval_integer(
     const uacpi_args *args, uacpi_u64 *out_value
 );
 
+/*
+ * Get the bitness of the currently loaded AML code according to the DSDT.
+ *
+ * Returns either 32 or 64.
+ */
+uacpi_status uacpi_get_aml_bitness(uacpi_u8 *out_bitness);
+
 /*
  * Helpers for entering & leaving ACPI mode. Note that ACPI mode is entered
  * automatically during the call to uacpi_initialize().

diff --git a/source/uacpi.c b/source/uacpi.c
@@ -705,3 +705,11 @@ uacpi_status uacpi_eval_integer(
 
     return UACPI_STATUS_OK;
 }
+
+uacpi_status uacpi_get_aml_bitness(uacpi_u8 *out_bitness)
+{
+    UACPI_ENSURE_INIT_LEVEL_AT_LEAST(UACPI_INIT_LEVEL_SUBSYSTEM_INITIALIZED);
+
+    *out_bitness = g_uacpi_rt_ctx.is_rev1 ? 32 : 64;
+    return UACPI_STATUS_OK;
+}