qinwei2004 commented on code in PR #6478: URL: https://github.com/apache/incubator-nuttx/pull/6478#discussion_r917212831
########## arch/arm64/src/common/arm64_initialstate.c: ########## @@ -0,0 +1,154 @@ +/**************************************************************************** + * arch/arm64/src/common/arm64_initialstate.c + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. The + * ASF licenses this file to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance with the + * License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the + * License for the specific language governing permissions and limitations + * under the License. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <debug.h> +#include <arch/limits.h> + +#include <nuttx/arch.h> +#include <nuttx/board.h> +#include <nuttx/drivers/drivers.h> +#include <nuttx/fs/loop.h> +#include <nuttx/net/loopback.h> +#include <nuttx/net/tun.h> +#include <nuttx/net/telnet.h> +#include <nuttx/note/note_driver.h> +#include <nuttx/syslog/syslog_console.h> +#include <nuttx/serial/pty.h> +#include <nuttx/crypto/crypto.h> +#include <nuttx/power/pm.h> +#include <arch/chip/chip.h> + +#include "arm64_arch.h" +#include "arm64_internal.h" +#include "chip.h" +#include "arm64_fatal.h" + +#ifdef CONFIG_ARCH_FPU +#include "arm64_fpu.h" +#endif + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +void arm64_new_task(struct tcb_s * tcb) +{ + char * stack_ptr = tcb->stack_base_ptr + tcb->adj_stack_size; + struct regs_context * pinitctx; + +#ifdef CONFIG_ARCH_FPU + struct fpu_reg * pfpuctx; + pfpuctx = STACK_PTR_TO_FRAME(struct fpu_reg, stack_ptr); + tcb->xcp.fpu_regs = pfpuctx; + + /* set fpu context */ + + arm64_init_fpu(tcb); + stack_ptr = (char *)pfpuctx; +#endif + + pinitctx = STACK_PTR_TO_FRAME(struct regs_context, stack_ptr); + memset(pinitctx, 0, sizeof(struct regs_context)); + pinitctx->elr = (uint64_t)tcb->start; + + /* Keep using SP_EL1 */ + + pinitctx->spsr = SPSR_MODE_EL1H; + +#ifdef CONFIG_SUPPRESS_INTERRUPTS + pinitctx->spsr |= (DAIF_IRQ_BIT | DAIF_FIQ_BIT); +#endif /* CONFIG_SUPPRESS_INTERRUPTS */ + + pinitctx->sp_elx = (uint64_t)pinitctx; + pinitctx->sp_el0 = (uint64_t)pinitctx; + pinitctx->exe_depth = 0; + pinitctx->tpidr_el0 = (uint64_t)tcb; + pinitctx->tpidr_el1 = (uint64_t)tcb; + + tcb->xcp.regs = (uint64_t *)pinitctx; +} + +/**************************************************************************** + * Name: up_initial_state + * + * Description: + * A new thread is being started and a new TCB has been created. This + * function is called to initialize the processor specific portions of + * the new TCB. + * + * This function must setup the initial architecture registers and/or + * stack so that execution will begin at tcb->start on the next context + * switch. + * + ****************************************************************************/ + +void up_initial_state(struct tcb_s *tcb) +{ + struct xcptcontext *xcp = &tcb->xcp; + + memset(xcp, 0, sizeof(struct xcptcontext)); + + if (tcb->pid < CONFIG_SMP_NCPUS) + { + /* Initialize the idle thread stack */ +#ifdef CONFIG_SMP + tcb->stack_alloc_ptr = (void *)(g_cpu_idlestackalloc[0]); Review Comment: fix it the second idle thread can be init with normal routine thanks -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@nuttx.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
