80 lines
1.5 KiB
C
80 lines
1.5 KiB
C
#include <stdlib.h>
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#include <errno.h>
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#include <unistd.h>
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#include "libsys.h"
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static void* stdout_handle;
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static void* of_finddevice(const char* name)
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{
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struct
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{
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const char* method;
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int ins, outs;
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const char* name;
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void* phandle;
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} args;
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args.method = "finddevice";
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args.ins = 1;
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args.outs = 1;
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args.name = name;
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openfirmware_call(&args);
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return args.phandle;
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}
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static int of_getprop(void* phandle, const char* name, void* dest, int destlen)
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{
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struct
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{
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const char* method;
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int ins, outs;
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void* phandle;
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const char* name;
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void* dest;
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int destlen;
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int flag;
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} args;
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args.method = "getprop";
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args.ins = 4;
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args.outs = 1;
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args.phandle = phandle;
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args.name = name;
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args.dest = dest;
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args.destlen = destlen;
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openfirmware_call(&args);
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return args.flag;
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}
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void openfirmware_init(void)
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{
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void* chosen = of_finddevice("/chosen");
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of_getprop(chosen, "stdout", &stdout_handle, sizeof(stdout_handle));
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}
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unsigned char _sys_rawread(void)
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{
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return 0;
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}
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void _sys_rawwrite(unsigned char c)
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{
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struct
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{
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const char* method;
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int ins, outs;
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void* ihandle;
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void* address;
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int len;
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int actual;
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} args;
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args.method = "write";
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args.ins = 3;
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args.outs = 1;
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args.ihandle = stdout_handle;
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args.address = &c;
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args.len = 1;
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openfirmware_call(&args);
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}
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