9os

Experimental kernel using plan9 ideas for embedded device
git clone git://git.simple-cc.org/9os
Log | Files | Refs | README | LICENSE

arch.c (839B)

      1 #include <os9/os9.h>
      2 
      3 #include <setjmp.h>
      4 #include <stdlib.h>
      5 #include <string.h>
      6 
      7 #include "hosted.h"
      8 
      9 jmp_buf recover;
     10 
     11 noreturn void abort(void);
     12 noreturn void longjmp(jmp_buf env, int val);
     13 
     14 char bufto[PAGESIZE], buffrom[PAGESIZE];
     15 
     16 void
     17 barrier(int what)
     18 {
     19 }
     20 
     21 void
     22 halt(void)
     23 {
     24 	abort();
     25 }
     26 
     27 /*
     28  * we don't implement context switch in hosted mode
     29  * so, this function is going to be called only once
     30  * with the entry point of the initial task
     31  */
     32 void
     33 swtch(Context *ctx)
     34 {
     35 	void (*fn)(void) = (void (*)(void)) ctx->entry;
     36 
     37 	(*fn)();
     38 }
     39 
     40 uint8_t
     41 inm8(void *addr)
     42 {
     43 	return 0;
     44 }
     45 
     46 uint16_t
     47 inm16(void *addr)
     48 {
     49 	return 0;
     50 }
     51 
     52 uint32_t
     53 inm32(void *addr)
     54 {
     55 	return 0;
     56 }
     57 
     58 uint8_t
     59 outm8(uint8_t val, void *addr)
     60 {
     61 	return 0;
     62 }
     63 
     64 uint16_t
     65 outm16(uint16_t val, void *addr)
     66 {
     67 	return 0;
     68 }
     69 
     70 uint32_t
     71 outm32(uint32_t val, void *addr)
     72 {
     73 	return 0;
     74 }