GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
commit b1928b41c0
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+/*
+ * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <asm_macros.S>
+#include <lib/el3_runtime/cpu_data.h>
+
+	.globl	_cpu_data
+	.globl	_cpu_data_by_index
+
+/* -----------------------------------------------------------------
+ * cpu_data_t *_cpu_data(void)
+ *
+ * Return the cpu_data structure for the current CPU.
+ * -----------------------------------------------------------------
+ */
+func _cpu_data
+	/* r12 is pushed to meet the 8 byte stack alignment requirement */
+	push	{r12, lr}
+	bl	plat_my_core_pos
+	pop	{r12, lr}
+	b	_cpu_data_by_index
+endfunc _cpu_data
+
+/* -----------------------------------------------------------------
+ * cpu_data_t *_cpu_data_by_index(uint32_t cpu_index)
+ *
+ * Return the cpu_data structure for the CPU with given linear index
+ *
+ * This can be called without a valid stack.
+ * clobbers: r0, r1
+ * -----------------------------------------------------------------
+ */
+func _cpu_data_by_index
+	mov_imm	r1, CPU_DATA_SIZE
+	mul	r0, r0, r1
+	ldr	r1, =percpu_data
+	add	r0, r0, r1
+	bx	lr
+endfunc _cpu_data_by_index