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e525c38cb8
* Initial plan * [libcpu][cortex-a] Improve FPU stack initialization implementation Co-authored-by: BernardXiong <1241087+BernardXiong@users.noreply.github.com> * [libcpu][cortex-a] Replace FPU init loop with rt_memset Co-authored-by: BernardXiong <1241087+BernardXiong@users.noreply.github.com> --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: BernardXiong <1241087+BernardXiong@users.noreply.github.com>
108 lines
2.0 KiB
C
108 lines
2.0 KiB
C
/*
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* Copyright (c) 2006-2020, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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*/
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#ifndef CPUPORT_H__
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#define CPUPORT_H__
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#include <rtcompiler.h>
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/* the exception stack without VFP registers */
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struct rt_hw_exp_stack
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{
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unsigned long r0;
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unsigned long r1;
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unsigned long r2;
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unsigned long r3;
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unsigned long r4;
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unsigned long r5;
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unsigned long r6;
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unsigned long r7;
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unsigned long r8;
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unsigned long r9;
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unsigned long r10;
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unsigned long fp;
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unsigned long ip;
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unsigned long sp;
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unsigned long lr;
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unsigned long pc;
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unsigned long cpsr;
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};
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struct rt_hw_stack
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{
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unsigned long cpsr;
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unsigned long r0;
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unsigned long r1;
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unsigned long r2;
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unsigned long r3;
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unsigned long r4;
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unsigned long r5;
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unsigned long r6;
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unsigned long r7;
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unsigned long r8;
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unsigned long r9;
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unsigned long r10;
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unsigned long fp;
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unsigned long ip;
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unsigned long lr;
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unsigned long pc;
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};
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#define USERMODE 0x10
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#define FIQMODE 0x11
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#define IRQMODE 0x12
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#define SVCMODE 0x13
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#define MONITORMODE 0x16
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#define ABORTMODE 0x17
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#define HYPMODE 0x1b
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#define UNDEFMODE 0x1b
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#define MODEMASK 0x1f
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#define NOINT 0xc0
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#define T_Bit (1<<5)
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#define F_Bit (1<<6)
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#define I_Bit (1<<7)
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#define A_Bit (1<<8)
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#define E_Bit (1<<9)
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#define J_Bit (1<<24)
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/* VFP/NEON register count for FPU context */
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#ifndef VFP_DATA_NR
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#define VFP_DATA_NR 64 /* 32 double-precision registers = 64 words */
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#endif
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#ifdef RT_USING_SMP
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typedef union {
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unsigned long slock;
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struct __arch_tickets {
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unsigned short owner;
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unsigned short next;
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} tickets;
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} rt_hw_spinlock_t;
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#endif
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rt_inline void rt_hw_isb(void)
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{
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__asm volatile ("isb":::"memory");
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}
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rt_inline void rt_hw_dmb(void)
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{
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__asm volatile ("dmb":::"memory");
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}
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rt_inline void rt_hw_dsb(void)
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{
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__asm volatile ("dsb":::"memory");
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}
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void _thread_start(void);
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#endif /*CPUPORT_H__*/
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