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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-09-30 RT-Thread the general porting API for lwp
* 2023-07-18 Shell New signal arch API arch_thread_signal_enter
*/
#ifndef __LWP_ARCH_COMM__
#define __LWP_ARCH_COMM__
#include <mm_aspace.h>
#include <rtthread.h>
#include <mmu.h>
/**
* APIs that must port to all architectures
*/
/* syscall handlers */
void arch_clone_exit(void);
void arch_fork_exit(void);
void arch_syscall_exit(void);
void arch_ret_to_user(void);
/* ELF relocation */
#ifdef ARCH_MM_MMU
struct rt_lwp;
void arch_elf_reloc(rt_aspace_t aspace, void *text_start, void *rel_dyn_start, size_t rel_dyn_size, void *got_start, size_t got_size, void *dynsym);
#else
void arch_elf_reloc(void *text_start, void *rel_dyn_start, size_t rel_dyn_size, void *got_start, size_t got_size, void *dynsym);
#endif
/* User entry. enter user program code for the first time */
void arch_crt_start_umode(void *args, const void *text, void *ustack, void *user_stack);
void arch_start_umode(void *args, const void *text, void *ustack, void *k_stack);
/* lwp create and setup */
int arch_set_thread_context(void (*exit)(void), void *new_thread_stack,
void *user_stack, void **thread_sp);
void *arch_get_user_sp(void);
/* user space setup and control */
int arch_user_space_init(struct rt_lwp *lwp);
void arch_user_space_free(struct rt_lwp *lwp);
void *arch_kernel_mmu_table_get(void);
void arch_kuser_init(rt_aspace_t aspace, void *vectors);
int arch_expand_user_stack(void *addr);
/* thread id register */
void arch_set_thread_area(void *p);
void* arch_get_tidr(void);
void arch_set_tidr(void *p);
/** entry point of architecture signal handling */
rt_noreturn void arch_thread_signal_enter(int signo, siginfo_t *psiginfo,
void *exp_frame, void *entry_uaddr,
lwp_sigset_t *save_sig_mask);
void arch_signal_check_erestart(void *eframe, void *ksp);
void arch_syscall_set_errno(void *eframe, int expected, int code);
int arch_backtrace_uthread(rt_thread_t thread);
#endif /* __LWP_ARCH_COMM__ */
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