128 lines
3.8 KiB
C
128 lines
3.8 KiB
C
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/*
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ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _CHCORE_H_
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#define _CHCORE_H_
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/*
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* Interrupt saved context.
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*/
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struct extctx {
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BYTE8 _next;
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BYTE8 r31;
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BYTE8 r30;
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BYTE8 r27;
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BYTE8 r26;
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BYTE8 r25;
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BYTE8 r24;
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BYTE8 r23;
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BYTE8 r22;
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BYTE8 r21;
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BYTE8 r20;
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BYTE8 r19;
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BYTE8 r18;
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BYTE8 sr;
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BYTE8 r1;
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BYTE8 r0;
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UWORD16 pc;
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};
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/*
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* System saved context.
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*/
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struct intctx {
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BYTE8 _next;
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BYTE8 r29;
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BYTE8 r28;
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BYTE8 r17;
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BYTE8 r16;
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BYTE8 r15;
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BYTE8 r14;
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BYTE8 r13;
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BYTE8 r12;
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BYTE8 r11;
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BYTE8 r10;
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#ifndef CH_CURRP_REGISTER_CACHE
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BYTE8 r9;
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BYTE8 r8;
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#endif
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BYTE8 r7;
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BYTE8 r6;
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BYTE8 r5;
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BYTE8 r4;
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BYTE8 r3;
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BYTE8 r2;
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BYTE8 pcl;
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BYTE8 pch;
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};
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/*
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* Port dependent part of the Thread structure, you may add fields in
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* this structure.
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*/
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typedef struct {
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struct intctx *sp;
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} Context;
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/**
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* Platform dependent part of the \p chThdCreate() API.
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*/
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#define SETUP_CONTEXT(workspace, wsize, pf, arg) { \
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tp->p_ctx.sp = (struct intctx*)((BYTE8 *)workspace + wsize - 1 - \
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(sizeof(struct intctx) - 1)); \
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tp->p_ctx.sp->r2 = (int)pf; \
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tp->p_ctx.sp->r3 = (int)pf >> 8; \
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tp->p_ctx.sp->r4 = (int)arg; \
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tp->p_ctx.sp->r5 = (int)arg >> 8; \
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tp->p_ctx.sp->pcl = (int)threadstart >> 8; \
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tp->p_ctx.sp->pch = (int)threadstart; \
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}
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#define INT_REQUIRED_STACK 0x10
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#define StackAlign(n) (n)
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#define UserStackSize(n) StackAlign(sizeof(Thread) + \
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(sizeof(struct intctx) - 1) + \
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(sizeof(struct extctx) - 1) + \
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(n) + (INT_REQUIRED_STACK))
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#define WorkingArea(s, n) BYTE8 s[UserStackSize(n)];
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#define chSysLock() asm volatile ("cli")
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#define chSysUnlock() asm volatile ("sei")
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#define chSysIRQEnterI() \
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asm ("" : : : "r18", "r19", "r20", "r21", "r22", "r23", "r24", \
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"r25", "r26", "r27", "r30", "r31");
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#define chSysIRQExitI() { \
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if (chSchRescRequiredI()) \
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chSchDoRescheduleI(); \
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}
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#define IDLE_THREAD_STACK_SIZE 8
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void _IdleThread(void *p) __attribute__((noreturn));
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void chSysHalt(void) __attribute__((noreturn)) ;
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void chSysSwitchI(Thread *otp, Thread *ntp);
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void chSysPuts(char *msg);
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void threadstart(void) __attribute__((naked));
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#endif /* _CHCORE_H_ */
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