supp.c

开放源码的编译器open watcom 1.6.0版的源代码

/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
*    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
*
*    The Original Code and all software distributed under the License are
*    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
*    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
*    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
*    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
*    NON-INFRINGEMENT. Please see the License for the specific language
*    governing rights and limitations under the License.
*
*  ========================================================================
*
* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
*               DESCRIBE IT HERE!
*
****************************************************************************/


#include <stddef.h>
#include <string.h>
#include "trpimp.h"

#if defined(WANT_FILE_INFO)
static unsigned (* const FileInfoRequests[])(void) = {
         ReqFileInfo_getdate,
         ReqFileInfo_setdate,
};
#endif

#if defined(WANT_ENV)
static unsigned (* const EnvRequests[])(void) = {
         ReqEnv_getvar,
         ReqEnv_setvar,
};
#endif

#if defined(WANT_FILE)
static unsigned (* const FileRequests[])(void) = {
         ReqFile_get_config,
         ReqFile_open,
         ReqFile_seek,
         ReqFile_read,
         ReqFile_write,
         ReqFile_write_console,
         ReqFile_close,
         ReqFile_erase,
         ReqFile_string_to_fullpath,
         ReqFile_run_cmd,
};
#endif

#if defined(WANT_OVL)
static unsigned (* const OvlRequests[])(void) = {
        ReqOvl_state_size,
        ReqOvl_get_data,
        ReqOvl_read_state,
        ReqOvl_write_state,
        ReqOvl_trans_vect_addr,
        ReqOvl_trans_ret_addr,
        ReqOvl_get_remap_entry,
};
#endif

#if defined(WANT_THREAD)
static unsigned (* const ThreadRequests[])(void) = {
        ReqThread_get_next,
        ReqThread_set,
        ReqThread_freeze,
        ReqThread_thaw,
        ReqThread_get_extra,
};
#endif

#if defined(WANT_RFX)
static unsigned (* const RFXRequests[])(void) = {
        ReqRfx_rename,
        ReqRfx_mkdir,
        ReqRfx_rmdir,
        ReqRfx_setdrive,
        ReqRfx_getdrive,
        ReqRfx_setcwd,
        ReqRfx_getcwd,
        ReqRfx_setdatetime,
        ReqRfx_getdatetime,
        ReqRfx_getfreespace,
        ReqRfx_setfileattr,
        ReqRfx_getfileattr,
        ReqRfx_nametocannonical,
        ReqRfx_findfirst,
        ReqRfx_findnext,
        ReqRfx_findclose,
};
#endif

typedef struct {
    const char *name;
    const void *vectors;
} service_entry;

static const service_entry Services[] = {
#if defined(WANT_FILE_INFO)
    { FILE_INFO_SUPP_NAME,      FileInfoRequests },
#endif
#if defined(WANT_ENV)
    { ENV_SUPP_NAME,    EnvRequests },
#endif
#if defined(WANT_FILE)
    { FILE_SUPP_NAME,   FileRequests },
#endif
#if defined(WANT_OVL)
    { OVERLAY_SUPP_NAME,OvlRequests  },
#endif
#if defined(WANT_THREAD)
    { THREAD_SUPP_NAME, ThreadRequests },
#endif
#if defined(WANT_RFX)
    { RFX_SUPP_NAME,    RFXRequests },
#endif
    { NULL,             NULL }
};

unsigned ReqGet_supplementary_service(void)
{
    char                                *name;
    get_supplementary_service_ret       *out;
    unsigned                            i;

    name = GetInPtr( sizeof( get_supplementary_service_req ) );
    out = GetOutPtr( 0 );
    out->err = 0;
    out->id = 0;
    for( i = 0; Services[i].name != NULL; ++i ) {
        if( stricmp( Services[i].name, name ) == 0 ) {
            out->id = (unsigned_32)Services[i].vectors;
            break;
        }
    }
    return( sizeof( *out ) );
}

unsigned ReqPerform_supplementary_service( void )
{
    unsigned    (* const * _WCUNALIGNED *vectors)(void);
    access_req  *sup_req;

    vectors = GetInPtr( sizeof( access_req ) );
    sup_req = GetInPtr( sizeof( supp_prefix ) );
    return( (*vectors)[*sup_req]() );
}