diff options
Diffstat (limited to 'ports/AVR/chcore.h')
| -rw-r--r-- | ports/AVR/chcore.h | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/ports/AVR/chcore.h b/ports/AVR/chcore.h new file mode 100644 index 000000000..3fd027951 --- /dev/null +++ b/ports/AVR/chcore.h @@ -0,0 +1,127 @@ +/*
+ 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/>.
+*/
+
+#ifndef _CHCORE_H_
+#define _CHCORE_H_
+
+/*
+ * Interrupt saved context.
+ */
+struct extctx {
+ BYTE8 _next;
+ 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 sr;
+ BYTE8 r1;
+ BYTE8 r0;
+ UWORD16 pc;
+};
+
+/*
+ * System saved context.
+ */
+struct intctx {
+ BYTE8 _next;
+ BYTE8 r29;
+ BYTE8 r28;
+ BYTE8 r17;
+ BYTE8 r16;
+ BYTE8 r15;
+ BYTE8 r14;
+ BYTE8 r13;
+ BYTE8 r12;
+ BYTE8 r11;
+ BYTE8 r10;
+#ifndef CH_CURRP_REGISTER_CACHE
+ BYTE8 r9;
+ BYTE8 r8;
+#endif
+ BYTE8 r7;
+ BYTE8 r6;
+ BYTE8 r5;
+ BYTE8 r4;
+ BYTE8 r3;
+ BYTE8 r2;
+ BYTE8 pcl;
+ BYTE8 pch;
+};
+
+/*
+ * Port dependent part of the Thread structure, you may add fields in
+ * this structure.
+ */
+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 = (struct intctx*)((BYTE8 *)workspace + wsize - 1 - \
+ (sizeof(struct intctx) - 1)); \
+ 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->pcl = (int)threadstart >> 8; \
+ tp->p_ctx.sp->pch = (int)threadstart; \
+}
+
+#define INT_REQUIRED_STACK 0x10
+#define StackAlign(n) (n)
+#define UserStackSize(n) StackAlign(sizeof(Thread) + \
+ (sizeof(struct intctx) - 1) + \
+ (sizeof(struct extctx) - 1) + \
+ (n) + (INT_REQUIRED_STACK))
+#define WorkingArea(s, n) BYTE8 s[UserStackSize(n)];
+
+#define chSysLock() asm volatile ("cli")
+
+#define chSysUnlock() asm volatile ("sei")
+
+#define chSysIRQEnterI() \
+ asm ("" : : : "r18", "r19", "r20", "r21", "r22", "r23", "r24", \
+ "r25", "r26", "r27", "r30", "r31");
+
+
+#define chSysIRQExitI() { \
+ if (chSchRescRequiredI()) \
+ chSchDoRescheduleI(); \
+}
+
+#define IDLE_THREAD_STACK_SIZE 8
+void _IdleThread(void *p) __attribute__((noreturn));
+
+void chSysHalt(void) __attribute__((noreturn)) ;
+void chSysSwitchI(Thread *otp, Thread *ntp);
+void chSysPuts(char *msg);
+void threadstart(void) __attribute__((naked));
+
+#endif /* _CHCORE_H_ */
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