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Diffstat (limited to 'libexec/rtld-aout/dynamic.h')
| -rw-r--r-- | libexec/rtld-aout/dynamic.h | 380 |
1 files changed, 0 insertions, 380 deletions
diff --git a/libexec/rtld-aout/dynamic.h b/libexec/rtld-aout/dynamic.h deleted file mode 100644 index 3c8bacd..0000000 --- a/libexec/rtld-aout/dynamic.h +++ /dev/null @@ -1,380 +0,0 @@ -/* - * 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. - * - * $FreeBSD$ - */ - -#ifndef __DYNAMIC_H__ -#define __DYNAMIC_H__ - -#define SUN_COMPAT - -#include "md.h" -#include "link.h" - -#ifndef RELOC_JMPTAB_P - -#define RELOC_JMPTAB_P(r) ((r)->r_jmptable) -#define RELOC_BASEREL_P(r) ((r)->r_baserel) -#define RELOC_RELATIVE_P(r) ((r)->r_relative) -#define RELOC_COPY_P(r) ((r)->r_copy) -#define RELOC_LAZY_P(r) ((r)->r_jmptable) - -#define CHECK_GOT_RELOC(r) ((r)->r_pcrel) -#define RELOC_PIC_TYPE(r) ((r)->r_baserel? \ - PIC_TYPE_LARGE:PIC_TYPE_NONE) -#endif - -#ifndef RELOC_INIT_SEGMENT_RELOC -#define RELOC_INIT_SEGMENT_RELOC(r) -#endif - -#ifndef MAX_GOTOFF -#define MAX_GOTOFF(x) (LONG_MAX) -#endif - -#ifndef MIN_GOTOFF -#define MIN_GOTOFF(x) (LONG_MIN) -#endif - -/* - * Internal representation of relocation types - */ -#define RELTYPE_EXTERN 1 -#define RELTYPE_JMPSLOT 2 -#define RELTYPE_BASEREL 4 -#define RELTYPE_RELATIVE 8 -#define RELTYPE_COPY 16 - -#define N_ISWEAK(p) (N_BIND(p) & BIND_WEAK) - -typedef struct localsymbol { - struct nzlist nzlist; /* n[z]list from file */ - struct glosym *symbol; /* Corresponding global symbol, - if any */ - struct localsymbol *next; /* List of definitions */ - struct file_entry *entry; /* Backpointer to file */ - long gotslot_offset; /* Position in GOT, if any */ - int symbolnum; /* Position in output nlist */ - int flags; -#define LS_L_SYMBOL 1 /* Local symbol starts with an `L' */ -#define LS_WRITE 2 /* Symbol goes in output symtable */ -#define LS_RENAME 4 /* xlat name to `<file>.<name>' */ -#define LS_HASGOTSLOT 8 /* This symbol has a GOT entry */ -#define LS_WARNING 16 /* Second part of a N_WARNING duo */ -} localsymbol_t; - -/* - * Global symbol data is recorded in these structures, one for each global - * symbol. They are found via hashing in 'symtab', which points to a vector - * of buckets. Each bucket is a chain of these structures through the link - * field. - * - * Rewritten version to support extra info for dynamic linking. - */ - -struct glosym { - struct glosym *link; /* Next symbol hash bucket. */ - char *name; /* Name of this symbol. */ - long value; /* Value of this symbol */ - localsymbol_t *refs; /* Chain of local symbols from object - files pertaining to this global - symbol */ - localsymbol_t *sorefs;/* Same for local symbols from shared - object files. */ - - char *warning; /* message, from N_WARNING nlists */ - int common_size; /* Common size */ - int symbolnum; /* Symbol index in output symbol table */ - int rrs_symbolnum; /* Symbol index in RRS symbol table */ - - localsymbol_t *def_lsp; /* The local symbol that gave this - global symbol its definition */ - - char defined; /* Definition of this symbol */ - char so_defined; /* Definition of this symbol in a shared - object. These go into the RRS symbol table */ - u_char undef_refs; /* Count of number of "undefined" - messages printed for this symbol */ - u_char mult_defs; /* Same for "multiply defined" symbols */ - struct glosym *alias; /* For symbols of type N_INDR, this - points at the real symbol. */ - int setv_count; /* Number of elements in N_SETV symbols */ - int size; /* Size of this symbol (either from N_SIZE - symbols or a from shared object's RRS */ - int aux; /* Auxiliary type information conveyed in - the `n_other' field of nlists */ - - /* The offset into one of the RRS tables, -1 if not used */ - long jmpslot_offset; - long gotslot_offset; - - long flags; - -#define GS_DEFINED 0x1 /* Symbol has definition (notyetused)*/ -#define GS_REFERENCED 0x2 /* Symbol is referred to by something - interesting */ -#define GS_TRACE 0x4 /* Symbol will be traced */ -#define GS_HASJMPSLOT 0x8 /* */ -#define GS_HASGOTSLOT 0x10 /* Some state bits concerning */ -#define GS_CPYRELOCRESERVED 0x20 /* entries in GOT and PLT tables */ -#define GS_CPYRELOCCLAIMED 0x40 /* */ -#define GS_WEAK 0x80 /* Symbol is weakly defined */ - -}; -#ifndef __symbol_defined__ -#define __symbol_defined__ -typedef struct glosym symbol; -#endif - -/* The symbol hash table: a vector of SYMTABSIZE pointers to struct glosym. */ -extern symbol *symtab[]; -#define FOR_EACH_SYMBOL(i,sp) { \ - int i; \ - for (i = 0; i < SYMTABSIZE; i++) { \ - register symbol *sp; \ - for (sp = symtab[i]; sp; sp = sp->link) - -#define END_EACH_SYMBOL }} - -extern symbol *got_symbol; /* the symbol __GLOBAL_OFFSET_TABLE_ */ -extern symbol *dynamic_symbol; /* the symbol __DYNAMIC */ - -/* - * Each input file, and each library member ("subfile") being loaded, has a - * `file_entry' structure for it. - * - * For files specified by command args, these are contained in the vector which - * `file_table' points to. - * - * For library members, they are dynamically allocated, and chained through the - * `chain' field. The chain is found in the `subfiles' field of the - * `file_entry'. The `file_entry' objects for the members have `superfile' - * fields pointing to the one for the library. - * - * Rewritten version to support extra info for dynamic linking. - */ - -struct file_entry { - char *filename; /* Name of this file. */ - /* - * Name to use for the symbol giving address of text start Usually - * the same as filename, but for a file spec'd with -l this is the -l - * switch itself rather than the filename. - */ - char *local_sym_name; - struct exec header; /* The file's a.out header. */ - localsymbol_t *symbols; /* Symbol table of the file. */ - int nsymbols; /* Number of symbols in above array. */ - int string_size; /* Size in bytes of string table. */ - char *strings; /* Pointer to the string table when - in core, NULL otherwise */ - int strings_offset; /* Offset of string table, - (normally N_STROFF() + 4) */ - /* - * Next two used only if `relocatable_output' or if needed for - * output of undefined reference line numbers. - */ - struct relocation_info *textrel; /* Text relocations */ - int ntextrel; /* # of text relocations */ - struct relocation_info *datarel; /* Data relocations */ - int ndatarel; /* # of data relocations */ - - /* - * Relation of this file's segments to the output file. - */ - int text_start_address; /* Start of this file's text segment - in the output file core image. */ - int data_start_address; /* Start of this file's data segment - in the output file core image. */ - int bss_start_address; /* Start of this file's bss segment - in the output file core image. */ - struct file_entry *subfiles; /* For a library, points to chain of - entries for the library members. */ - struct file_entry *superfile; /* For library member, points to the - library's own entry. */ - struct file_entry *chain; /* For library member, points to next - entry for next member. */ - int starting_offset; /* For a library member, offset of the - member within the archive. Zero for - files that are not library members.*/ - int total_size; /* Size of contents of this file, - if library member. */ -#ifdef SUN_COMPAT - struct file_entry *silly_archive;/* For shared libraries which have - a .sa companion */ -#endif - int lib_major, lib_minor; /* Version numbers of a shared object */ - - int flags; -#define E_IS_LIBRARY 1 /* File is an archive */ -#define E_HEADER_VALID 2 /* File's header has been read */ -#define E_SEARCH_DIRS 4 /* Search directories for file */ -#define E_SEARCH_DYNAMIC 8 /* Search for shared libs allowed */ -#define E_JUST_SYMS 0x10 /* File is used for incremental load */ -#define E_DYNAMIC 0x20 /* File is a shared object */ -#define E_SCRAPPED 0x40 /* Ignore this file */ -#define E_SYMBOLS_USED 0x80 /* Symbols from this entry were used */ -#define E_SECONDCLASS 0x100 /* Shared object is a subsidiary */ -}; - -/* - * Runtime Relocation Section (RRS). - * This describes the data structures that go into the output text and data - * segments to support the run-time linker. The RRS can be empty (plain old - * static linking), or can just exist of GOT and PLT entries (in case of - * statically linked PIC code). - */ -extern int rrs_section_type; /* What's in the RRS section */ -#define RRS_NONE 0 -#define RRS_PARTIAL 1 -#define RRS_FULL 2 -extern int rrs_text_size; /* Size of RRS text additions */ -extern int rrs_text_start; /* Location of above */ -extern int rrs_data_size; /* Size of RRS data additions */ -extern int rrs_data_start; /* Location of above */ -extern char *rrs_search_paths; /* `-L' RT paths */ - -/* Version number to put in __DYNAMIC (set by -V) */ -extern int soversion; -#ifndef DEFAULT_SOVERSION -#define DEFAULT_SOVERSION LD_VERSION_BSD -#endif - -extern int pc_relocation; /* Current PC reloc value */ - -extern int number_of_shobjs; /* # of shared objects linked in */ - -/* Current link mode */ -extern int link_mode; -#define DYNAMIC 1 /* Consider shared libraries */ -#define SYMBOLIC 2 /* Force symbolic resolution */ -#define FORCEARCHIVE 4 /* Force inclusion of all members - of archives */ -#define SHAREABLE 8 /* Build a shared object */ -#define SILLYARCHIVE 16 /* Process .sa companions, if any */ -#define FORCEDYNAMIC 32 /* Force dynamic output even if no - shared libraries included */ -#define WARNRRSTEXT 64 /* Warn about rrs in text */ - -extern FILE *outstream; /* Output file. */ -extern struct exec outheader; /* Output file header. */ -extern int magic; /* Output file magic. */ -extern int oldmagic; -extern int relocatable_output; -extern int pic_type; -#define PIC_TYPE_NONE 0 -#define PIC_TYPE_SMALL 1 -#define PIC_TYPE_LARGE 2 - -void read_header __P((int, struct file_entry *)); -void read_entry_symbols __P((int, struct file_entry *)); -void read_entry_strings __P((int, struct file_entry *)); -void read_entry_relocation __P((int, struct file_entry *)); -void enter_file_symbols __P((struct file_entry *)); -void read_file_symbols __P((struct file_entry *)); -int set_element_prefixed_p __P((char *)); -int text_offset __P((struct file_entry *)); -int file_open __P((struct file_entry *)); -void each_file __P((void (*)(), void *)); -void each_full_file __P((void (*)(), void *)); -unsigned long check_each_file __P((unsigned long (*)(), void *)); -void mywrite __P((void *, int, int, FILE *)); -void padfile __P((int, FILE *)); - -/* In warnings.c: */ -void perror_name __P((char *)); -void perror_file __P((struct file_entry *)); -void print_symbols __P((FILE *)); -char *get_file_name __P((struct file_entry *)); -void print_file_name __P((struct file_entry *, FILE *)); -void prline_file_name __P((struct file_entry *, FILE *)); -int do_warnings __P((FILE *)); - -/* In etc.c: */ -#include "support.h" - -/* In symbol.c: */ -void symtab_init __P((int)); -symbol *getsym __P((char *)), *getsym_soft __P((char *)); - -/* In lib.c: */ -void search_library __P((int, struct file_entry *)); -void read_shared_object __P((int, struct file_entry *)); -int findlib __P((struct file_entry *)); - -/* In shlib.c: */ -#include "shlib.h" - -/* In rrs.c: */ -void init_rrs __P((void)); -int rrs_add_shobj __P((struct file_entry *)); -void alloc_rrs_reloc __P((struct file_entry *, symbol *)); -void alloc_rrs_segment_reloc __P((struct file_entry *, struct relocation_info *)); -void alloc_rrs_jmpslot __P((struct file_entry *, symbol *)); -void alloc_rrs_gotslot __P((struct file_entry *, struct relocation_info *, localsymbol_t *)); -void alloc_rrs_cpy_reloc __P((struct file_entry *, symbol *)); - -int claim_rrs_reloc __P((struct file_entry *, struct relocation_info *, symbol *, long *)); -long claim_rrs_jmpslot __P((struct file_entry *, struct relocation_info *, symbol *, long)); -long claim_rrs_gotslot __P((struct file_entry *, struct relocation_info *, struct localsymbol *, long)); -long claim_rrs_internal_gotslot __P((struct file_entry *, struct relocation_info *, struct localsymbol *, long)); -void claim_rrs_cpy_reloc __P((struct file_entry *, struct relocation_info *, symbol *)); -void claim_rrs_segment_reloc __P((struct file_entry *, struct relocation_info *)); -void consider_rrs_section_lengths __P((void)); -void relocate_rrs_addresses __P((void)); -void write_rrs __P((void)); - -/* In <md>.c */ -void md_init_header __P((struct exec *, int, int)); -long md_get_addend __P((struct relocation_info *, unsigned char *)); -void md_relocate __P((struct relocation_info *, long, unsigned char *, int)); -void md_make_jmpslot __P((jmpslot_t *, long, long)); -void md_fix_jmpslot __P((jmpslot_t *, long, u_long)); -int md_make_reloc __P((struct relocation_info *, struct relocation_info *, int)); -void md_make_jmpreloc __P((struct relocation_info *, struct relocation_info *, int)); -void md_make_gotreloc __P((struct relocation_info *, struct relocation_info *, int)); -void md_make_copyreloc __P((struct relocation_info *, struct relocation_info *)); -void md_set_breakpoint __P((long, long *)); - -#ifdef NEED_SWAP -/* In xbits.c: */ -void swap_longs __P((long *, int)); -void swap_symbols __P((struct nlist *, int)); -void swap_zsymbols __P((struct nzlist *, int)); -void swap_ranlib_hdr __P((struct ranlib *, int)); -void swap__dynamic __P((struct link_dynamic *)); -void swap_section_dispatch_table __P((struct section_dispatch_table *)); -void swap_so_debug __P((struct so_debug *)); -void swapin_sod __P((struct sod *, int)); -void swapout_sod __P((struct sod *, int)); -void swapout_fshash __P((struct fshash *, int)); -#endif - -#endif /* __DYNAMIC_H__ */ |
