9df1183b94
. added safecopies.c: these are library functions to maintain grant tables in own address space . sys_safecopy.c: interfaces to kernel calls to perform safe copy functions in from or to foreign process . changes in i/o fields (type merged with request) reflected in library functions (sys_out.c, sys_vinb.c, sys_vinl.c, sys_vinw.c, sys_voutb.c, sys_voutl.c, sys_voutw.c) . type merged with request in sys_sdevio, also now accepts offset which is used when a grant is specified (the _DIO_SAFE subtype) . system printf() function changed to send DIAGNOSTICS_S messages, which specify a grant id instead of a direct address for the buffer to be printed; tty and log can then safecopy the buffer
21 lines
618 B
C
21 lines
618 B
C
#include "syslib.h"
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/*===========================================================================*
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* sys_in *
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*===========================================================================*/
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PUBLIC int sys_in(port, value, type)
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int port; /* port address to read from */
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unsigned long *value; /* pointer where to store value */
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int type; /* byte, word, long */
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{
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message m_io;
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int result;
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m_io.DIO_REQUEST = _DIO_INPUT | type;
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m_io.DIO_PORT = port;
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result = _taskcall(SYSTASK, SYS_DEVIO, &m_io);
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*value = m_io.DIO_VALUE;
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return(result);
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}
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