49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
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/*
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* io-read.c --
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*
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* Copyright (c) 2006 CodeSourcery Inc
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* Copyright (c) 2018 Mentor Graphics
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*
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* The authors hereby grant permission to use, copy, modify, distribute,
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* and license this software and its documentation for any purpose, provided
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* that existing copyright notices are retained in all copies and that this
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* notice is included verbatim in any distributions. No written agreement,
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* license, or royalty fee is required for any of the authorized uses.
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* Modifications to this software may be copyrighted by their authors
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* and need not follow the licensing terms described here, provided that
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* the new terms are clearly indicated on the first page of each file where
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* they apply.
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*/
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#include <unistd.h>
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#include <errno.h>
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#define IO read
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#include "io.h"
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/*
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* read -- read from a file descriptor
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* input parameters:
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* 0 : file descriptor
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* 1 : buf ptr
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* 2 : count
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* output parameters:
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* 0 : result
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* 1 : errno
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*/
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ssize_t read (int fd, void *buf, size_t count)
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{
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#if HOSTED
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gdb_parambuf_t parameters;
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parameters[0] = (uint32_t) fd;
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parameters[1] = (uint32_t) buf;
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parameters[2] = (uint32_t) count;
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__io_hosted (HOSTED_READ, parameters);
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errno = __hosted_from_gdb_errno (parameters[1]);
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return parameters[0];
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#else
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errno = ENOSYS;
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return -1;
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#endif
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}
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