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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/lib/ppc405lib/simics_stdio.c $ */
/* */
/* OpenPOWER OnChipController Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2015 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
// $Id: simics_stdio.c,v 1.1.1.1 2013/12/11 20:49:20 bcbrock Exp $
// $Source: /afs/awd/projects/eclipz/KnowledgeBase/.cvsroot/eclipz/chips/p8/working/procedures/lib/simics_stdio.c,v $
//-----------------------------------------------------------------------------
// *! (C) Copyright International Business Machines Corp. 2013
// *! All Rights Reserved -- Property of IBM
// *! *** IBM Confidential ***
//-----------------------------------------------------------------------------
/// \file simics_stdio.c
/// \brief SSX I/O drivers for Simics stdio streams
///
/// The Simics 'stdio' component is a pseudo serial port for I/O to stdio,
/// stdout and stderr, as well as to other configurable streams. Each virtual
/// file potentially has a read port, write port and flush port.
///
/// The write ports accept 1, 2 and 4-byte transactions on a 32-bit OCI
/// address and write the data to the associated stream. Writing any value to
/// the flush port flushes the output stream. The input ports are not yet
/// implemented.
#include "ssx.h"
#include "simics_stdio.h"
SimicsStdio simics_stdin;
SimicsStdio simics_stdout;
SimicsStdio simics_stderr;
int
simics_stdio_sread(FILE *stream, void *buf, size_t count, size_t *read)
{
SSX_PANIC(ENXIO);
return -ENXIO;
}
int
simics_stdio_swrite(FILE *stream, const void *buf,
size_t count, size_t *written)
{
SimicsStdio *simics = (SimicsStdio *)stream;
size_t n;
n = count;
while (n) {
if (n >= 4) {
out32(simics->write_address, *((uint32_t *)buf));
buf += 4;
n -= 4;
} else if (n >= 2) {
out16(simics->write_address, *((uint16_t *)buf));
buf += 2;
n -= 2;
} else {
out8(simics->write_address, *((uint8_t *)buf));
buf++;
n--;
}
}
*written = count;
return 0;
}
ssize_t
simics_stdio_fflush(FILE *stream)
{
SimicsStdio *simics = (SimicsStdio *)stream;
out8(simics->flush_address, 0);
return 0;
}
/// Create a SimicsStdio stream
///
/// Any of the \a read_address, \a write_address or \a flush_address which are
/// non-0 specify that the stream supports the associated method. The Simics
/// I/O drivers do not require locking.
int
simics_stdio_create(SimicsStdio* stream,
SsxAddress read_address,
SsxAddress write_address,
SsxAddress flush_address)
{
FILE *base = (FILE *)stream;
int rc;
if (SSX_ERROR_CHECK_API) {
SSX_ERROR_IF(stream == 0, EBADF);
}
rc = FILE_create((FILE*)stream, 0);
if (!rc) {
stream->read_address = read_address;
if (read_address != 0) {
base->sread = simics_stdio_sread;
}
stream->write_address = write_address;
if (write_address != 0) {
base->swrite = simics_stdio_swrite;
}
stream->flush_address = flush_address;
if (flush_address != 0) {
base->fflush = simics_stdio_fflush;
}
}
return rc;
}
int
simics_stdin_create(SimicsStdio *stream)
{
return simics_stdio_create(stream, SIMICS_STDIN, 0, 0);
}
int
simics_stdout_create(SimicsStdio *stream)
{
return simics_stdio_create(stream, 0, SIMICS_STDOUT, SIMICS_STDOUT_FLUSH);
}
int
simics_stderr_create(SimicsStdio *stream)
{
return simics_stdio_create(stream, 0, SIMICS_STDERR, SIMICS_STDERR_FLUSH);
}
int
simics_stdfile_create(SimicsStdio *stream, int fn)
{
if (SSX_ERROR_CHECK_API) {
SSX_ERROR_IF((fn < 0) > (fn >= SIMICS_STDFILE_STREAMS), EBADF);
}
return simics_stdio_create(stream,
SIMICS_STDFILE_READ(fn),
SIMICS_STDFILE_WRITE(fn),
SIMICS_STDFILE_FLUSH(fn));
}
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