diff options
Diffstat (limited to 'libcpu/arm/realview-a8-vmm/stack.c')
| -rw-r--r-- | libcpu/arm/realview-a8-vmm/stack.c | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/libcpu/arm/realview-a8-vmm/stack.c b/libcpu/arm/realview-a8-vmm/stack.c deleted file mode 100644 index 8cf73ac05c..0000000000 --- a/libcpu/arm/realview-a8-vmm/stack.c +++ /dev/null @@ -1,63 +0,0 @@ -/* - * Copyright (c) 2006-2021, RT-Thread Development Team - * - * SPDX-License-Identifier: Apache-2.0 - * - * Change Logs: - * Date Author Notes - * 2011-09-23 Bernard the first version - * 2011-10-05 Bernard add thumb mode - */ -#include <rtthread.h> -#include <board.h> - -/** - * @addtogroup AM33xx - */ -/*@{*/ - -/** - * This function will initialize thread stack - * - * @param tentry the entry of thread - * @param parameter the parameter of entry - * @param stack_addr the beginning stack address - * @param texit the function will be called when thread exit - * - * @return stack address - */ -rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter, - rt_uint8_t *stack_addr, void *texit) -{ - rt_uint32_t *stk; - - stack_addr += sizeof(rt_uint32_t); - stack_addr = (rt_uint8_t *)RT_ALIGN_DOWN((rt_uint32_t)stack_addr, 8); - stk = (rt_uint32_t *)stack_addr; - *(--stk) = (rt_uint32_t)tentry; /* entry point */ - *(--stk) = (rt_uint32_t)texit; /* lr */ - *(--stk) = 0xdeadbeef; /* r12 */ - *(--stk) = 0xdeadbeef; /* r11 */ - *(--stk) = 0xdeadbeef; /* r10 */ - *(--stk) = 0xdeadbeef; /* r9 */ - *(--stk) = 0xdeadbeef; /* r8 */ - *(--stk) = 0xdeadbeef; /* r7 */ - *(--stk) = 0xdeadbeef; /* r6 */ - *(--stk) = 0xdeadbeef; /* r5 */ - *(--stk) = 0xdeadbeef; /* r4 */ - *(--stk) = 0xdeadbeef; /* r3 */ - *(--stk) = 0xdeadbeef; /* r2 */ - *(--stk) = 0xdeadbeef; /* r1 */ - *(--stk) = (rt_uint32_t)parameter; /* r0 : argument */ - - /* cpsr */ - if ((rt_uint32_t)tentry & 0x01) - *(--stk) = SVCMODE | 0x20; /* thumb mode */ - else - *(--stk) = SVCMODE; /* arm mode */ - - /* return task's current stack address */ - return (rt_uint8_t *)stk; -} - -/*@}*/ |