f23a756349
Rename all up_* files to conform to the name conventions of https://cwiki.apache.org/confluence/display/NUTTX/Naming+FAQ Rename all internal functions from up_* z16_
65 lines
2.4 KiB
C
65 lines
2.4 KiB
C
/****************************************************************************
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* arch/z16/src/common/z16_initialstate.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <string.h>
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#include <nuttx/arch.h>
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#include "chip.h"
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#include "z16_internal.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: up_initial_state
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*
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* Description:
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* A new thread is being started and a new TCB
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* has been created. This function is called to initialize
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* the processor specific portions of the new TCB.
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*
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* This function must setup the initial architecture registers
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* and/or stack so that execution will begin at tcb->start
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* on the next context switch.
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*
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****************************************************************************/
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void up_initial_state(struct tcb_s *tcb)
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{
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uint32_t *reg32 = (uint32_t*)tcb->xcp.regs;
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/* Initialize the initial exception register context structure */
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memset(&tcb->xcp, 0, sizeof(struct xcptcontext));
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#ifndef CONFIG_SUPPRESS_INTERRUPTS
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tcb->xcp.regs[REG_FLAGS] = (uint16_t)Z16F_CNTRL_FLAGS_IRQE; /* IRQE flag will enable interrupts */
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#endif
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reg32[REG_SP/2] = (uint32_t)tcb->adj_stack_ptr;
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reg32[REG_PC/2] = (uint32_t)tcb->start;
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}
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