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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-05-18 Jesven first version
*/
#ifndef LWP_ARCH_H__
#define LWP_ARCH_H__
#include <rtconfig.h>
#ifdef ARCH_MM_MMU
#define USER_VADDR_TOP 0x0001000000000000UL
#define USER_HEAP_VADDR (0x0000ffff40000000UL)
#define USER_HEAP_VEND USER_STACK_VSTART
#define USER_STACK_VSTART 0x0000ffff70000000UL
#define USER_STACK_VEND (USER_STACK_VSTART + 0x10000000)
#define USER_ARG_VADDR USER_STACK_VEND
#define LDSO_LOAD_VADDR 0x60000000UL
#define USER_VADDR_START 0x00200000UL
#define USER_LOAD_VADDR USER_VADDR_START
#define UCTX_ABI_OFFSET_TO_SI 16
#ifndef __ASSEMBLY__
#include <lwp.h>
#include <lwp_arch_comm.h>
#ifdef __cplusplus
extern "C" {
#endif
unsigned long rt_hw_ffz(unsigned long x);
rt_inline void icache_invalid_all(void)
{
__asm__ volatile ("ic ialluis\n\tisb sy":::"memory");
}
/**
* @brief Save signal-related context to user stack
*
* @param user_sp the current sp of user
* @param exp_frame exception frame to resume former execution
* @param psiginfo pointer to the siginfo
* @param elr pc of former execution
* @param spsr program status of former execution
* @return void* the new user sp
*/
void *arch_signal_ucontext_save(rt_base_t user_sp, siginfo_t *psiginfo,
struct rt_hw_exp_stack *exp_frame,
lwp_sigset_t *save_sig_mask);
/**
* @brief Restore the signal mask after return
*
* @param user_sp sp of user
* @return void*
*/
void *arch_signal_ucontext_restore(rt_base_t user_sp, rt_base_t kernel_sp);
void arch_syscall_restart(void *sp, void *ksp);
#ifdef __cplusplus
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* ARCH_MM_MMU */
#endif /*LWP_ARCH_H__*/
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