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split link.h into three parts. The MI parts are left in link.h
a.out stuff in link_aout.h and ELF stuff in link_elf.h. Switch sparc64 back to MI link.h. drahn@ ok (powerpc will switch soon).OPENBSD_3_2
art
22 years ago
4 changed files with 237 additions and 179 deletions
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+4 -4src/include/Makefile
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+5 -175src/include/link.h
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+204 -0src/include/link_aout.h
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+24 -0src/include/link_elf.h
+ 4
- 4
src/include/Makefile
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+ 5
- 175
src/include/link.h
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+ 204
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src/include/link_aout.h
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| @ -0,0 +1,204 @@ | |||
| /* $OpenBSD: link_aout.h,v 1.1 2002/06/07 03:00:01 art Exp $ */ | |||
| /* | |||
| * Copyright (c) 1993 Paul Kranenburg | |||
| * All rights reserved. | |||
| * | |||
| * Redistribution and use in source and binary forms, with or without | |||
| * modification, are permitted provided that the following conditions | |||
| * are met: | |||
| * 1. Redistributions of source code must retain the above copyright | |||
| * notice, this list of conditions and the following disclaimer. | |||
| * 2. Redistributions in binary form must reproduce the above copyright | |||
| * notice, this list of conditions and the following disclaimer in the | |||
| * documentation and/or other materials provided with the distribution. | |||
| * 3. All advertising materials mentioning features or use of this software | |||
| * must display the following acknowledgement: | |||
| * This product includes software developed by Paul Kranenburg. | |||
| * 4. The name of the author may not be used to endorse or promote products | |||
| * derived from this software without specific prior written permission | |||
| * | |||
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |||
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |||
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |||
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |||
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |||
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |||
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |||
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |||
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |||
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |||
| */ | |||
| /* | |||
| * RRS section definitions. | |||
| * | |||
| * The layout of some data structures defined in this header file is | |||
| * such that we can provide compatibility with the SunOS 4.x shared | |||
| * library scheme. | |||
| */ | |||
| /* | |||
| * Symbol description with size. This is simply an `nlist' with | |||
| * one field (nz_size) added. | |||
| * Used to convey size information on items in the data segment | |||
| * of shared objects. An array of these live in the shared object's | |||
| * text segment and is addressed by the `sdt_nzlist' field. | |||
| */ | |||
| struct nzlist { | |||
| struct nlist nlist; | |||
| u_long nz_size; | |||
| #define nz_un nlist.n_un | |||
| #define nz_strx nlist.n_un.n_strx | |||
| #define nz_name nlist.n_un.n_name | |||
| #define nz_type nlist.n_type | |||
| #define nz_value nlist.n_value | |||
| #define nz_desc nlist.n_desc | |||
| #define nz_other nlist.n_other | |||
| }; | |||
| #define N_AUX(p) ((p)->n_other & 0xf) | |||
| #define N_BIND(p) (((unsigned int)(p)->n_other >> 4) & 0xf) | |||
| #define N_OTHER(r, v) (((unsigned int)(r) << 4) | ((v) & 0xf)) | |||
| #define AUX_OBJECT 1 | |||
| #define AUX_FUNC 2 | |||
| /*#define BIND_LOCAL 0 not used */ | |||
| /*#define BIND_GLOBAL 1 not used */ | |||
| #define BIND_WEAK 2 | |||
| /* | |||
| * The `section_dispatch_table' structure contains offsets to various data | |||
| * structures needed to do run-time relocation. | |||
| */ | |||
| struct section_dispatch_table { | |||
| struct so_map *sdt_loaded; /* List of loaded objects */ | |||
| long sdt_sods; /* List of shared objects descriptors */ | |||
| long sdt_paths; /* Library search paths */ | |||
| long sdt_got; /* Global offset table */ | |||
| long sdt_plt; /* Procedure linkage table */ | |||
| long sdt_rel; /* Relocation table */ | |||
| long sdt_hash; /* Symbol hash table */ | |||
| long sdt_nzlist; /* Symbol table itself */ | |||
| long sdt_filler2; /* Unused (was: stab_hash) */ | |||
| long sdt_buckets; /* Number of hash buckets */ | |||
| long sdt_strings; /* Symbol strings */ | |||
| long sdt_str_sz; /* Size of symbol strings */ | |||
| long sdt_text_sz; /* Size of text area */ | |||
| long sdt_plt_sz; /* Size of procedure linkage table */ | |||
| }; | |||
| /* | |||
| * RRS symbol hash table, addressed by `sdt_hash' in section_dispatch_table. | |||
| * Used to quickly lookup symbols of the shared object by hashing | |||
| * on the symbol's name. `rh_symbolnum' is the index of the symbol | |||
| * in the shared object's symbol list (`sdt_nzlist'), `rh_next' is | |||
| * the next symbol in the hash bucket (in case of collisions). | |||
| */ | |||
| struct rrs_hash { | |||
| int rh_symbolnum; /* Symbol number */ | |||
| int rh_next; /* Next hash entry */ | |||
| }; | |||
| /* | |||
| * `rt_symbols' is used to keep track of run-time allocated commons | |||
| * and data items copied from shared objects. | |||
| */ | |||
| struct rt_symbol { | |||
| struct nzlist *rt_sp; /* The symbol */ | |||
| struct rt_symbol *rt_next; /* Next in linear list */ | |||
| struct rt_symbol *rt_link; /* Next in bucket */ | |||
| caddr_t rt_srcaddr; /* Address of "master" copy */ | |||
| struct so_map *rt_smp; /* Originating map */ | |||
| }; | |||
| /* | |||
| * Debugger interface structure. | |||
| */ | |||
| struct so_debug { | |||
| int dd_version; /* Version # of interface */ | |||
| int dd_in_debugger; /* Set when run by debugger */ | |||
| int dd_sym_loaded; /* Run-time linking brought more | |||
| symbols into scope */ | |||
| char *dd_bpt_addr; /* Address of rtld-generated bpt */ | |||
| int dd_bpt_shadow; /* Original contents of bpt */ | |||
| struct rt_symbol *dd_cc; /* Allocated commons/copied data */ | |||
| }; | |||
| /* | |||
| * Entry points into ld.so - user interface to the run-time linker. | |||
| */ | |||
| struct ld_entry { | |||
| void *(*dlopen)(const char *, int); | |||
| int (*dlclose)(void *); | |||
| void *(*dlsym)(void *, const char *); | |||
| int (*dlctl)(void *, int, void *); | |||
| void (*dlexit)(void); | |||
| void (*dlrsrvd[3])(void); | |||
| }; | |||
| /* | |||
| * This is the structure pointed at by the __DYNAMIC symbol if an | |||
| * executable requires the attention of the run-time link editor. | |||
| * __DYNAMIC is given the value zero if no run-time linking needs to | |||
| * be done (it is always present in shared objects). | |||
| * The union `d_un' provides for different versions of the dynamic | |||
| * linking mechanism (switched on by `d_version'). The last version | |||
| * used by Sun is 3. We leave some room here and go to version number | |||
| * 8 for NetBSD, the main difference lying in the support for the | |||
| * `nz_list' type of symbols. | |||
| */ | |||
| struct _dynamic { | |||
| int d_version; /* version # of this interface */ | |||
| struct so_debug *d_debug; | |||
| union { | |||
| struct section_dispatch_table *d_sdt; | |||
| } d_un; | |||
| struct ld_entry *d_entry; /* compat - now in crt_ldso */ | |||
| }; | |||
| #define LD_VERSION_SUN (3) | |||
| #define LD_VERSION_BSD (8) | |||
| #define LD_VERSION_NZLIST_P(v) ((v) >= 8) | |||
| #define LD_GOT(x) ((x)->d_un.d_sdt->sdt_got) | |||
| #define LD_PLT(x) ((x)->d_un.d_sdt->sdt_plt) | |||
| #define LD_REL(x) ((x)->d_un.d_sdt->sdt_rel) | |||
| #define LD_SYMBOL(x) ((x)->d_un.d_sdt->sdt_nzlist) | |||
| #define LD_HASH(x) ((x)->d_un.d_sdt->sdt_hash) | |||
| #define LD_STRINGS(x) ((x)->d_un.d_sdt->sdt_strings) | |||
| #define LD_NEED(x) ((x)->d_un.d_sdt->sdt_sods) | |||
| #define LD_BUCKETS(x) ((x)->d_un.d_sdt->sdt_buckets) | |||
| #define LD_PATHS(x) ((x)->d_un.d_sdt->sdt_paths) | |||
| #define LD_GOTSZ(x) ((x)->d_un.d_sdt->sdt_plt - (x)->d_un.d_sdt->sdt_got) | |||
| #define LD_RELSZ(x) ((x)->d_un.d_sdt->sdt_hash - (x)->d_un.d_sdt->sdt_rel) | |||
| #define LD_HASHSZ(x) ((x)->d_un.d_sdt->sdt_nzlist - (x)->d_un.d_sdt->sdt_hash) | |||
| #define LD_STABSZ(x) ((x)->d_un.d_sdt->sdt_strings - (x)->d_un.d_sdt->sdt_nzlist) | |||
| #define LD_PLTSZ(x) ((x)->d_un.d_sdt->sdt_plt_sz) | |||
| #define LD_STRSZ(x) ((x)->d_un.d_sdt->sdt_str_sz) | |||
| #define LD_TEXTSZ(x) ((x)->d_un.d_sdt->sdt_text_sz) | |||
| /* | |||
| * Interface to ld.so | |||
| */ | |||
| struct crt_ldso { | |||
| int crt_ba; /* Base address of ld.so */ | |||
| int crt_dzfd; /* "/dev/zero" file descriptor (SunOS) */ | |||
| int crt_ldfd; /* ld.so file descriptor */ | |||
| struct _dynamic *crt_dp; /* Main's __DYNAMIC */ | |||
| char **crt_ep; /* environment strings */ | |||
| caddr_t crt_bp; /* Breakpoint if run from debugger */ | |||
| char *crt_prog; /* Program name (v3) */ | |||
| char *crt_ldso; /* Link editor name (v4) */ | |||
| struct ld_entry *crt_ldentry; /* dl*() access (v4) */ | |||
| }; | |||
| /* | |||
| * Version passed from crt0 to ld.so (1st argument to _rtld()). | |||
| */ | |||
| #define CRT_VERSION_SUN 1 | |||
| #define CRT_VERSION_BSD_2 2 | |||
| #define CRT_VERSION_BSD_3 3 | |||
| #define CRT_VERSION_BSD_4 4 | |||
+ 24
- 0
src/include/link_elf.h
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| @ -0,0 +1,24 @@ | |||
| /* $OpenBSD: link_elf.h,v 1.1 2002/06/07 03:00:01 art Exp $ */ | |||
| /* | |||
| * Public domain. | |||
| */ | |||
| #include <elf_abi.h> | |||
| #ifndef DT_PROCNUM | |||
| #define DT_PROCNUM 0 | |||
| #endif | |||
| /* | |||
| * struct link_map is a part of the protocol between the debugger and | |||
| * ld.so. | |||
| */ | |||
| struct link_map { | |||
| caddr_t l_addr; /* Base address of library */ | |||
| const char *l_name; /* Absolute path to library */ | |||
| void *l_ld; /* pointer to _DYNAMIC */ | |||
| struct link_map *l_next; | |||
| struct link_map *l_prev; | |||
| }; | |||