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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @addtogroup Core
* @{
*/
#ifndef _CHCORE_H_
#define _CHCORE_H_
/*
* Interrupt saved context.
*/
struct extctx {
BYTE8 sr;
BYTE8 r31;
BYTE8 r30;
BYTE8 r27;
BYTE8 r26;
BYTE8 r25;
BYTE8 r24;
BYTE8 r23;
BYTE8 r22;
BYTE8 r21;
BYTE8 r20;
BYTE8 r19;
BYTE8 r18;
BYTE8 r1;
BYTE8 r0;
UWORD16 pc;
};
/*
* Stack saved context.
*/
struct intctx {
BYTE8 r29;
BYTE8 r28;
BYTE8 r17;
BYTE8 r16;
BYTE8 r15;
BYTE8 r14;
BYTE8 r13;
BYTE8 r12;
BYTE8 r11;
BYTE8 r10;
BYTE8 r9;
BYTE8 r8;
BYTE8 r7;
BYTE8 r6;
BYTE8 r5;
BYTE8 r4;
BYTE8 r3;
BYTE8 r2;
UWORD16 pc;
};
typedef struct {
struct intctx *sp;
} Context;
/**
* Platform dependent part of the \p chThdCreate() API.
*/
#define SETUP_CONTEXT(workspace, wsize, pf, arg) { \
tp->p_ctx.sp--; \
tp->p_ctx.sp->r2 = (int)pf; \
tp->p_ctx.sp->r3 = (int)pf >> 8; \
tp->p_ctx.sp->r4 = (int)arg; \
tp->p_ctx.sp->r5 = (int)arg >> 8; \
tp->p_ctx.sp->pc = (UWORD16)threadstart; \
}
/*
* Interrupt stack usage except for saved registers.
*/
#define EXTRA_INT_STACK 0x10
#define UserStackSize(n) (sizeof(Thread) + \
sizeof(struct intctx) + \
sizeof(struct extctx) + \
EXTRA_INT_STACK + \
(n))
#define chSysLock() asm("cli")
#define chSysUnlock() asm("sei")
void chSysHalt(void) __attribute__((noreturn)) ;
void chSysPause(void) __attribute__((noreturn)) ;
void chSysSwitchI(Context *oldp, Context *newp);
void threadstart(void);
#endif /* _CHCORE_H_ */
/** @} */
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