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113 lines
4.4 KiB
C
113 lines
4.4 KiB
C
/* Copyright (C) 2001 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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*/
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/*
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int __loadx(flag, module, arg1, arg2, arg3)
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The __loadx() is a call to ld_loadutil() kernel function, which
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does the real work. Note ld_loadutil() is not exported an cannot be
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called directly from user space.
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void *ld_loadutil() call is a utility function used for loader extensions
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supporting run-time linking and dl*() functions.
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void * - will return the modules entry point if it succeds of NULL
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on failure.
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int flag - the flag field performas a dual role: the top 8 bits specify
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the work for __loadx() to perform, the bottom 8 bits are
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used to pass flags to the work routines, all other bits are
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reserved.
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*/
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#define DL_LOAD 0x1000000 /* __loadx(flag,buf, buf_len, filename, libr_path) */
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#define DL_POSTLOADQ 0x2000000 /* __loadx(flag,buf, buf_len, module_handle) */
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#define DL_EXECQ 0x3000000 /* __loadx(flag,buf, buf_len) */
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#define DL_EXITQ 0x4000000 /* __loadx(flag,buf, buf_len) */
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#define DL_PREUNLOADQ 0x5000000 /* __loadx(flag,buf, buf_len, module_handle) */
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#define DL_INIT 0x6000000 /* __loadx(flag,NULL) */
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#define DL_GETSYM 0x7000000 /* __loadx(flag,symbol, index, modules_data_origin) */
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#define DL_SETDEPEND 0x8000000 /* __loadx(flag,import_data_org, import_index, */
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/* export_data_org, export_index) */
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#define DL_DELDEPEND 0x9000000 /* __loadx(flag,import_data_org, import_index, */
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/* export_data_org, export_index) */
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#define DL_GLOBALSYM 0xA000000 /* __loadx(flag,symbol_name, ptr_to_rec_index, */
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/* ptr_to_rec_data_org) */
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#define DL_UNIX_SYSCALL 0xB000000 /* __loadx(flag,syscall_symbol_name) */
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#define DL_FUNCTION_MASK 0xFF000000
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#define DL_SRCHDEPENDS 0x00100000
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#define DL_SRCHMODULE 0x00080000
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#define DL_SRCHLOADLIST 0x00040000
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#define DL_LOAD_LDX1 0x00040000
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#define DL_LOAD_RTL 0x00020000
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#define DL_HASHSTRING 0x00020000
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#define DL_INFO_OK 0x00010000
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#define DL_LOAD_DLINFO 0x00010000
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#define DL_UNLOADED 0x00020000
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typedef union _dl_info
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{
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struct {
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uint _xflags; /* flag bits in the array */
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uint _size; /* size of this structure */
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uint _arraylen; /* number of following elements */
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} _dl_stat;
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struct {
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caddr_t _textorg; /* start of loaded program image */
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caddr_t _dataorg; /* start of data instance */
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uint _datasize; /* size of data instance */
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ushort _index; /* index of this le in la_dynlist */
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ushort _mflags; /* info about module from load() */
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} _dl_array;
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} DL_INFO;
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#define dlinfo_xflags _dl_stat._xflags
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#define dlinfo_arraylen _dl_stat._arraylen
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#define dlinfo_size _dl_stat._size
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#define dlinfo_textorg _dl_array._textorg
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#define dlinfo_datasize _dl_array._datasize
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#define dlinfo_dataorg _dl_array._dataorg
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#define dlinfo_index _dl_array._index
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#define dlinfo_flags _dl_array._mflags
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#define DL_HAS_RTINIT 0x1 /* indicates the module __rtinit symbols */
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#define DL_IS_NEW 0x2 /* indicates that the module is newly loaded */
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struct _xArgs
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{
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char *libpath;
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DL_INFO *info;
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uint infosize;
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};
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/* Shared Object DATA used for dl-open,dl-sym & dl-close support */
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typedef struct
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{
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void *handle; /* handle for __loadx */
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uint type; /* type of __loadx flag */
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ushort index; /* dlinfo_index */
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caddr_t dataorg; /* dlinfo_dataorg */
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} DL_SODATA;
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