kernel: Add .note section

Signed-off-by: EnderIce2 <enderice2@protonmail.com>

Kernel/kernel.cpp

@@ -419,3 +419,73 @@ EXTERNC void TaskingPanic()
 	if (TaskManager)
 		TaskManager->Panic();
 }
+
+#define HEX_DIGIT(c) (((c) >= '0' && (c) <= '9') ? ((c) - '0') : ((c) - 'a' + 10))
+#define CONVERT_TO_BYTE(h, l) ((HEX_DIGIT(h) << 4) | HEX_DIGIT(l))
+#define HASH_BYTES(hex)                 \
+	{CONVERT_TO_BYTE(hex[0], hex[1]),   \
+	 CONVERT_TO_BYTE(hex[2], hex[3]),   \
+	 CONVERT_TO_BYTE(hex[4], hex[5]),   \
+	 CONVERT_TO_BYTE(hex[6], hex[7]),   \
+	 CONVERT_TO_BYTE(hex[8], hex[9]),   \
+	 CONVERT_TO_BYTE(hex[10], hex[11]), \
+	 CONVERT_TO_BYTE(hex[12], hex[13]), \
+	 CONVERT_TO_BYTE(hex[14], hex[15]), \
+	 CONVERT_TO_BYTE(hex[16], hex[17]), \
+	 CONVERT_TO_BYTE(hex[18], hex[19]), \
+	 CONVERT_TO_BYTE(hex[20], hex[21]), \
+	 CONVERT_TO_BYTE(hex[22], hex[23]), \
+	 CONVERT_TO_BYTE(hex[24], hex[25]), \
+	 CONVERT_TO_BYTE(hex[26], hex[27]), \
+	 CONVERT_TO_BYTE(hex[28], hex[29]), \
+	 CONVERT_TO_BYTE(hex[30], hex[31]), \
+	 CONVERT_TO_BYTE(hex[32], hex[33]), \
+	 CONVERT_TO_BYTE(hex[34], hex[35]), \
+	 CONVERT_TO_BYTE(hex[36], hex[37]), \
+	 CONVERT_TO_BYTE(hex[38], hex[39])}
+
+/* These are declared in GNU ld */
+enum
+{
+	NT_FNX_ABI_TAG = 1,
+	NT_FNX_VERSION = 2,
+	NT_FNX_BUILD_ID = 3,
+	NT_FNX_ARCH = 4
+};
+
+struct Elf_Nhdr
+{
+	__UINT32_TYPE__ n_namesz;
+	__UINT32_TYPE__ n_descsz;
+	__UINT32_TYPE__ n_type;
+} __attribute__((packed));
+
+const struct
+{
+	Elf_Nhdr header;
+	char name[4];
+	__UINT32_TYPE__ desc[4];
+} __abi_tag __attribute__((aligned(4), section(".note.ABI-tag"))) = {
+	.header = {
+		.n_namesz = 4,							 /* "FNX" + '\0' */
+		.n_descsz = sizeof(__UINT32_TYPE__) * 4, /* Description Size */
+		.n_type = NT_FNX_ABI_TAG,				 /* Type */
+	},
+	.name = "FNX",
+	.desc = {0, 0, 0, 0},
+};
+
+const struct
+{
+	Elf_Nhdr header;
+	char name[4];
+	__UINT8_TYPE__ desc[20];
+} __build_id __attribute__((aligned(4), section(".note.build-id"))) = {
+	.header = {
+		.n_namesz = 4,							 /* "FNX" + '\0' */
+		.n_descsz = sizeof(__UINT8_TYPE__) * 20, /* Description Size */
+		.n_type = NT_FNX_BUILD_ID,				 /* Type */
+	},
+	.name = "FNX",
+	.desc = HASH_BYTES(GIT_COMMIT),
+};