Integrate uACPI

2025-12-21 22:24:23 +01:00
parent c3123192d8
commit 8794a61073
167 changed files with 42535 additions and 4 deletions
--- a/kernel/uACPI/include/uacpi/platform/compiler.h
+++ b/kernel/uACPI/include/uacpi/platform/compiler.h
@@ -0,0 +1,125 @@
+#pragma once
+
+/*
+ * Compiler-specific attributes/macros go here. This is the default placeholder
+ * that should work for MSVC/GCC/clang.
+ */
+
+#ifdef UACPI_OVERRIDE_COMPILER
+#include "uacpi_compiler.h"
+#else
+
+#define UACPI_ALIGN(x) __declspec(align(x))
+
+#if defined(__WATCOMC__)
+#define UACPI_STATIC_ASSERT(expr, msg)
+#elif defined(__cplusplus)
+#define UACPI_STATIC_ASSERT static_assert
+#else
+#define UACPI_STATIC_ASSERT _Static_assert
+#endif
+
+#ifdef _MSC_VER
+    #include <intrin.h>
+
+    #define UACPI_ALWAYS_INLINE __forceinline
+
+    #define UACPI_PACKED(decl)  \
+        __pragma(pack(push, 1)) \
+        decl;                   \
+        __pragma(pack(pop))
+#elif defined(__WATCOMC__)
+    #define UACPI_ALWAYS_INLINE inline
+    #define UACPI_PACKED(decl) _Packed decl;
+#else
+    #define UACPI_ALWAYS_INLINE inline __attribute__((always_inline))
+    #define UACPI_PACKED(decl) decl __attribute__((packed));
+#endif
+
+#if defined(__GNUC__) || defined(__clang__)
+    #define uacpi_unlikely(expr) __builtin_expect(!!(expr), 0)
+    #define uacpi_likely(expr)   __builtin_expect(!!(expr), 1)
+
+    #ifdef __has_attribute
+        #if __has_attribute(__fallthrough__)
+            #define UACPI_FALLTHROUGH __attribute__((__fallthrough__))
+        #endif
+    #endif
+
+    #define UACPI_MAYBE_UNUSED __attribute__ ((unused))
+
+    #define UACPI_NO_UNUSED_PARAMETER_WARNINGS_BEGIN             \
+        _Pragma("GCC diagnostic push")                           \
+        _Pragma("GCC diagnostic ignored \"-Wunused-parameter\"")
+
+    #define UACPI_NO_UNUSED_PARAMETER_WARNINGS_END \
+        _Pragma("GCC diagnostic pop")
+
+    #ifdef __clang__
+        #define UACPI_PRINTF_DECL(fmt_idx, args_idx) \
+            __attribute__((format(printf, fmt_idx, args_idx)))
+    #else
+        #define UACPI_PRINTF_DECL(fmt_idx, args_idx) \
+            __attribute__((format(gnu_printf, fmt_idx, args_idx)))
+    #endif
+
+    #define UACPI_COMPILER_HAS_BUILTIN_MEMCPY
+    #define UACPI_COMPILER_HAS_BUILTIN_MEMMOVE
+    #define UACPI_COMPILER_HAS_BUILTIN_MEMSET
+    #define UACPI_COMPILER_HAS_BUILTIN_MEMCMP
+#elif defined(__WATCOMC__)
+    #define uacpi_unlikely(expr) expr
+    #define uacpi_likely(expr) expr
+
+    /*
+     * The OpenWatcom documentation suggests this should be done using
+     * _Pragma("off (unreferenced)") and _Pragma("pop (unreferenced)"),
+     * but these pragmas appear to be no-ops. Use inline as the next best thing.
+     * Note that OpenWatcom accepts redundant modifiers without a warning,
+     * so UACPI_MAYBE_UNUSED inline still works.
+     */
+    #define UACPI_MAYBE_UNUSED inline
+
+    #define UACPI_NO_UNUSED_PARAMETER_WARNINGS_BEGIN
+    #define UACPI_NO_UNUSED_PARAMETER_WARNINGS_END
+
+    #define UACPI_PRINTF_DECL(fmt_idx, args_idx)
+#else
+    #define uacpi_unlikely(expr) expr
+    #define uacpi_likely(expr)   expr
+
+    #define UACPI_MAYBE_UNUSED
+
+    #define UACPI_NO_UNUSED_PARAMETER_WARNINGS_BEGIN
+    #define UACPI_NO_UNUSED_PARAMETER_WARNINGS_END
+
+    #define UACPI_PRINTF_DECL(fmt_idx, args_idx)
+#endif
+
+#ifndef UACPI_FALLTHROUGH
+    #define UACPI_FALLTHROUGH do {} while (0)
+#endif
+
+#ifndef UACPI_POINTER_SIZE
+    #ifdef _WIN32
+        #ifdef _WIN64
+            #define UACPI_POINTER_SIZE 8
+        #else
+            #define UACPI_POINTER_SIZE 4
+        #endif
+    #elif defined(__GNUC__)
+        #define UACPI_POINTER_SIZE __SIZEOF_POINTER__
+    #elif defined(__WATCOMC__)
+        #ifdef __386__
+            #define UACPI_POINTER_SIZE 4
+        #elif defined(__I86__)
+            #error uACPI does not support 16-bit mode compilation
+        #else
+            #error Unknown target architecture
+        #endif
+    #else
+        #error Failed to detect pointer size
+    #endif
+#endif
+
+#endif