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31 lines
821 B
C
31 lines
821 B
C
#include "bdm-semihost.h"
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#include "bdm-gdb.h"
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#include <sys/types.h>
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#include <unistd.h>
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#include <errno.h>
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/*
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* lseek -- reposition a file descriptor
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* input parameters:
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* 0 : file descriptor
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* 1 : high word of offset
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* 2 : low word of offset
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* 3 : seek flag
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* output parameters:
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* 0 : high word of result
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* 1 : low word of result
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* 2 : errno
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*/
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off_t lseek (int fd, off_t offset, int whence)
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{
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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) ((offset >> 32) & 0xffffffff);
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parameters[2] = (uint32_t) (offset & 0xffffffff);
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parameters[3] = convert_to_gdb_lseek_flags (whence);
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BDM_TRAP (BDM_LSEEK, (uint32_t)parameters);
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errno = convert_from_gdb_errno (parameters[2]);
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return ((uint64_t)parameters[0] << 32) & ((uint64_t)parameters[1]);
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}
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