/* dlltool.c -- tool to generate stuff for PE style DLLs Copyright (C) 1995, 96, 97, 98, 1999 Free Software Foundation, Inc. This file is part of GNU Binutils. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* This program allows you to build the files necessary to create DLLs to run on a system which understands PE format image files. (eg, Windows NT) See "Peering Inside the PE: A Tour of the Win32 Portable Executable File Format", MSJ 1994, Volume 9 for more information. Also see "Microsoft Portable Executable and Common Object File Format, Specification 4.1" for more information. A DLL contains an export table which contains the information which the runtime loader needs to tie up references from a referencing program. The export table is generated by this program by reading in a .DEF file or scanning the .a and .o files which will be in the DLL. A .o file can contain information in special ".drectve" sections with export information. A DEF file contains any number of the following commands: NAME [ , ] The result is going to be .EXE LIBRARY [ , ] The result is going to be .DLL EXPORTS ( [ = ] [ @ ] [ NONAME ] [CONSTANT] [DATA] ) * Declares name1 as an exported symbol from the DLL, with optional ordinal number IMPORTS ( ( = . ) | ( [ = ] . )) * Declares that or the exported function whoes ordinal number is is to be imported from the file . If is specified then this is the name that the imported function will be refered to in the body of the DLL. DESCRIPTION Puts into output .exp file in the .rdata section [STACKSIZE|HEAPSIZE] [ , ] Generates --stack|--heap , in the output .drectve section. The linker will see this and act upon it. [CODE|DATA] + SECTIONS ( + )* = READ | WRITE | EXECUTE | SHARED Generates --attr in the output .drectve section. The linker will see this and act upon it. A -export: in a .drectve section in an input .o or .a file to this program is equivalent to a EXPORTS in a .DEF file. The program generates output files with the prefix supplied on the command line, or in the def file, or taken from the first supplied argument. The .exp.s file contains the information necessary to export the routines in the DLL. The .lib.s file contains the information necessary to use the DLL's routines from a referencing program. Example: file1.c: asm (".section .drectve"); asm (".ascii \"-export:adef\""); void adef (char * s) { printf ("hello from the dll %s\n", s); } void bdef (char * s) { printf ("hello from the dll and the other entry point %s\n", s); } file2.c: asm (".section .drectve"); asm (".ascii \"-export:cdef\""); asm (".ascii \"-export:ddef\""); void cdef (char * s) { printf ("hello from the dll %s\n", s); } void ddef (char * s) { printf ("hello from the dll and the other entry point %s\n", s); } int printf (void) { return 9; } themain.c: int main (void) { cdef (); return 0; } thedll.def LIBRARY thedll HEAPSIZE 0x40000, 0x2000 EXPORTS bdef @ 20 cdef @ 30 NONAME SECTIONS donkey READ WRITE aardvark EXECUTE # Compile up the parts of the dll and the program gcc -c file1.c file2.c themain.c # Optional: put the dll objects into a library # (you don't have to, you could name all the object # files on the dlltool line) ar qcv thedll.in file1.o file2.o ranlib thedll.in # Run this tool over the DLL's .def file and generate an exports # file (thedll.o) and an imports file (thedll.a). # (You may have to use -S to tell dlltool where to find the assembler). dlltool --def thedll.def --output-exp thedll.o --output-lib thedll.a # Build the dll with the library and the export table ld -o thedll.dll thedll.o thedll.in # Link the executable with the import library gcc -o themain.exe themain.o thedll.a This example can be extended if relocations are needed in the DLL: # Compile up the parts of the dll and the program gcc -c file1.c file2.c themain.c # Run this tool over the DLL's .def file and generate an imports file. dlltool --def thedll.def --output-lib thedll.lib # Link the executable with the import library and generate a base file # at the same time gcc -o themain.exe themain.o thedll.lib -Wl,--base-file -Wl,themain.base # Run this tool over the DLL's .def file and generate an exports file # which includes the relocations from the base file. dlltool --def thedll.def --base-file themain.base --output-exp thedll.exp # Build the dll with file1.o, file2.o and the export table ld -o thedll.dll thedll.exp file1.o file2.o */ /* .idata section description The .idata section is the import table. It is a collection of several subsections used to keep the pieces for each dll together: .idata$[234567]. IE: Each dll's .idata$2's are catenated together, each .idata$3's, etc. .idata$2 = Import Directory Table = array of IMAGE_IMPORT_DESCRIPTOR's. DWORD Import Lookup Table; - pointer to .idata$4 DWORD TimeDateStamp; - currently always 0 DWORD ForwarderChain; - currently always 0 DWORD Name; - pointer to dll's name PIMAGE_THUNK_DATA FirstThunk; - pointer to .idata$5 .idata$3 = null terminating entry for .idata$2. .idata$4 = Import Lookup Table = array of array of pointers to hint name table. There is one for each dll being imported from, and each dll's set is terminated by a trailing NULL. .idata$5 = Import Address Table = array of array of pointers to hint name table. There is one for each dll being imported from, and each dll's set is terminated by a trailing NULL. Initially, this table is identical to the Import Lookup Table. However, at load time, the loader overwrites the entries with the address of the function. .idata$6 = Hint Name Table = Array of { short, asciz } entries, one for each imported function. The `short' is the function's ordinal number. .idata$7 = dll name (eg: "kernel32.dll"). (.idata$6 for ppc) */ /* AIX requires this to be the first thing in the file. */ #ifndef __GNUC__ # ifdef _AIX #pragma alloca #endif #endif #define show_allnames 0 #define PAGE_SIZE 4096 #define PAGE_MASK (-PAGE_SIZE) #include "bfd.h" #include "libiberty.h" #include "bucomm.h" #include "getopt.h" #include "demangle.h" #include "dyn-string.h" #include "dlltool.h" #include #include #include #ifdef ANSI_PROTOTYPES #include #else #include #endif #ifdef DLLTOOL_ARM #include "coff/arm.h" #include "coff/internal.h" #endif /* Forward references. */ static char *look_for_prog PARAMS ((const char *, const char *, int)); static char *deduce_name PARAMS ((const char *)); #ifdef DLLTOOL_MCORE_ELF static void mcore_elf_cache_filename (char *); static void mcore_elf_gen_out_file (void); #endif #ifdef HAVE_SYS_WAIT_H #include #else /* ! HAVE_SYS_WAIT_H */ #if ! defined (_WIN32) || defined (__CYGWIN32__) #ifndef WIFEXITED #define WIFEXITED(w) (((w)&0377) == 0) #endif #ifndef WIFSIGNALED #define WIFSIGNALED(w) (((w)&0377) != 0177 && ((w)&~0377) == 0) #endif #ifndef WTERMSIG #define WTERMSIG(w) ((w) & 0177) #endif #ifndef WEXITSTATUS #define WEXITSTATUS(w) (((w) >> 8) & 0377) #endif #else /* defined (_WIN32) && ! defined (__CYGWIN32__) */ #ifndef WIFEXITED #define WIFEXITED(w) (((w) & 0xff) == 0) #endif #ifndef WIFSIGNALED #define WIFSIGNALED(w) (((w) & 0xff) != 0 && ((w) & 0xff) != 0x7f) #endif #ifndef WTERMSIG #define WTERMSIG(w) ((w) & 0x7f) #endif #ifndef WEXITSTATUS #define WEXITSTATUS(w) (((w) & 0xff00) >> 8) #endif #endif /* defined (_WIN32) && ! defined (__CYGWIN32__) */ #endif /* ! HAVE_SYS_WAIT_H */ /* ifunc and ihead data structures: ttk@cygnus.com 1997 When IMPORT declarations are encountered in a .def file the function import information is stored in a structure referenced by the global variable IMPORT_LIST. The structure is a linked list containing the names of the dll files each function is imported from and a linked list of functions being imported from that dll file. This roughly parallels the structure of the .idata section in the PE object file. The contents of .def file are interpreted from within the process_def_file function. Every time an IMPORT declaration is encountered, it is broken up into its component parts and passed to def_import. IMPORT_LIST is initialized to NULL in function main. */ typedef struct ifunct { char *name; /* name of function being imported */ int ord; /* two-byte ordinal value associated with function */ struct ifunct *next; } ifunctype; typedef struct iheadt { char *dllname; /* name of dll file imported from */ long nfuncs; /* number of functions in list */ struct ifunct *funchead; /* first function in list */ struct ifunct *functail; /* last function in list */ struct iheadt *next; /* next dll file in list */ } iheadtype; /* Structure containing all import information as defined in .def file (qv "ihead structure"). */ static iheadtype *import_list = NULL; static char *as_name = NULL; static char * as_flags = ""; static int no_idata4; static int no_idata5; static char *exp_name; static char *imp_name; static char *head_label; static char *imp_name_lab; static char *dll_name; static int add_indirect = 0; static int add_underscore = 0; static int dontdeltemps = 0; /* True if we should export all symbols. Otherwise, we only export symbols listed in .drectve sections or in the def file. */ static boolean export_all_symbols; /* True if we should exclude the symbols in DEFAULT_EXCLUDES when exporting all symbols. */ static boolean do_default_excludes; /* Default symbols to exclude when exporting all the symbols. */ static const char *default_excludes = "DllMain@12,DllEntryPoint@0,impure_ptr"; static char *def_file; extern char * program_name; static int machine; static int killat; static int add_stdcall_alias; static int verbose; static FILE *output_def; static FILE *base_file; #ifdef DLLTOOL_ARM static const char *mname = "arm"; #endif #ifdef DLLTOOL_I386 static const char *mname = "i386"; #endif #ifdef DLLTOOL_PPC static const char *mname = "ppc"; #endif #ifdef DLLTOOL_MCORE static const char * mname = "mcore"; #endif #ifdef DLLTOOL_MCORE_ELF static const char * mname = "mcore-elf"; static char * mcore_elf_out_file = NULL; static char * mcore_elf_linker = NULL; static char * mcore_elf_linker_flags = NULL; #define DRECTVE_SECTION_NAME ((machine == MMCORE_ELF || machine == MMCORE_ELF_LE) ? ".exports" : ".drectve") #endif #ifndef DRECTVE_SECTION_NAME #define DRECTVE_SECTION_NAME ".drectve" #endif #define PATHMAX 250 /* What's the right name for this ? */ #define TMP_ASM "dc.s" #define TMP_HEAD_S "dh.s" #define TMP_HEAD_O "dh.o" #define TMP_TAIL_S "dt.s" #define TMP_TAIL_O "dt.o" #define TMP_STUB "ds" /* This bit of assemly does jmp * .... */ static const unsigned char i386_jtab[] = { 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 }; static const unsigned char arm_jtab[] = { 0x00, 0xc0, 0x9f, 0xe5, /* ldr ip, [pc] */ 0x00, 0xf0, 0x9c, 0xe5, /* ldr pc, [ip] */ 0, 0, 0, 0 }; static const unsigned char arm_interwork_jtab[] = { 0x04, 0xc0, 0x9f, 0xe5, /* ldr ip, [pc] */ 0x00, 0xc0, 0x9c, 0xe5, /* ldr ip, [ip] */ 0x1c, 0xff, 0x2f, 0xe1, /* bx ip */ 0, 0, 0, 0 }; static const unsigned char thumb_jtab[] = { 0x40, 0xb4, /* push {r6} */ 0x02, 0x4e, /* ldr r6, [pc, #8] */ 0x36, 0x68, /* ldr r6, [r6] */ 0xb4, 0x46, /* mov ip, r6 */ 0x40, 0xbc, /* pop {r6} */ 0x60, 0x47, /* bx ip */ 0, 0, 0, 0 }; static const unsigned char mcore_be_jtab[] = { 0x70, 0x01, /* jmpi 1 */ 0x12, 0x11, /* nop */ 0x00, 0x00, 0x00, 0x00 /*
*/ }; static const unsigned char mcore_le_jtab[] = { 0x01, 0x70, /* jmpi 1 */ 0x11, 0x12, /* nop */ 0x00, 0x00, 0x00, 0x00 /*
*/ }; /* This is the glue sequence for PowerPC PE. There is a */ /* tocrel16-tocdefn reloc against the first instruction. */ /* We also need a IMGLUE reloc against the glue function */ /* to restore the toc saved by the third instruction in */ /* the glue. */ static const unsigned char ppc_jtab[] = { 0x00, 0x00, 0x62, 0x81, /* lwz r11,0(r2) */ /* Reloc TOCREL16 __imp_xxx */ 0x00, 0x00, 0x8B, 0x81, /* lwz r12,0(r11) */ 0x04, 0x00, 0x41, 0x90, /* stw r2,4(r1) */ 0xA6, 0x03, 0x89, 0x7D, /* mtctr r12 */ 0x04, 0x00, 0x4B, 0x80, /* lwz r2,4(r11) */ 0x20, 0x04, 0x80, 0x4E /* bctr */ }; #ifdef DLLTOOL_PPC /* the glue instruction, picks up the toc from the stw in */ /* the above code: "lwz r2,4(r1)" */ static bfd_vma ppc_glue_insn = 0x80410004; #endif struct mac { const char *type; const char *how_byte; const char *how_short; const char *how_long; const char *how_asciz; const char *how_comment; const char *how_jump; const char *how_global; const char *how_space; const char *how_align_short; const char *how_align_long; const char *how_default_as_switches; const char *how_bfd_target; enum bfd_architecture how_bfd_arch; const unsigned char *how_jtab; int how_jtab_size; /* size of the jtab entry */ int how_jtab_roff; /* offset into it for the ind 32 reloc into idata 5 */ }; static const struct mac mtable[] = { { #define MARM 0 "arm", ".byte", ".short", ".long", ".asciz", "@", "ldr\tip,[pc]\n\tldr\tpc,[ip]\n\t.long", ".global", ".space", ".align\t2",".align\t4", "", "pe-arm-little", bfd_arch_arm, arm_jtab, sizeof (arm_jtab), 8 } , { #define M386 1 "i386", ".byte", ".short", ".long", ".asciz", "#", "jmp *", ".global", ".space", ".align\t2",".align\t4", "", "pe-i386",bfd_arch_i386, i386_jtab, sizeof (i386_jtab), 2 } , { #define MPPC 2 "ppc", ".byte", ".short", ".long", ".asciz", "#", "jmp *", ".global", ".space", ".align\t2",".align\t4", "", "pe-powerpcle",bfd_arch_powerpc, ppc_jtab, sizeof (ppc_jtab), 0 } , { #define MTHUMB 3 "thumb", ".byte", ".short", ".long", ".asciz", "@", "push\t{r6}\n\tldr\tr6, [pc, #8]\n\tldr\tr6, [r6]\n\tmov\tip, r6\n\tpop\t{r6}\n\tbx\tip", ".global", ".space", ".align\t2",".align\t4", "=mthumb-interwork", "pe-arm-little", bfd_arch_arm, thumb_jtab, sizeof (thumb_jtab), 12 } , #define MARM_INTERWORK 4 { "arm_interwork", ".byte", ".short", ".long", ".asciz", "@", "ldr\tip,[pc]\n\tldr\tip,[ip]\n\tbx\tip\n\t.long", ".global", ".space", ".align\t2",".align\t4", "-mthumb-interwork", "pe-arm-little", bfd_arch_arm, arm_interwork_jtab, sizeof (arm_interwork_jtab), 12 } , { #define MMCORE_BE 5 "mcore", ".byte", ".short", ".long", ".asciz", "//", "jmpi\t1\n\tnop\n\t.long", ".global", ".space", ".align\t2",".align\t4", "", "pe-mcore-big", bfd_arch_mcore, mcore_be_jtab, sizeof (mcore_be_jtab), 8 } , { #define MMCORE_LE 6 "mcore-le", ".byte", ".short", ".long", ".asciz", "//", "jmpi\t1\n\tnop\n\t.long", ".global", ".space", ".align\t2",".align\t4", "-EL", "pe-mcore-little", bfd_arch_mcore, mcore_le_jtab, sizeof (mcore_le_jtab), 8 } , { #define MMCORE_ELF 7 "mcore-elf", ".byte", ".short", ".long", ".asciz", "//", "jmpi\t1\n\tnop\n\t.long", ".global", ".space", ".align\t2",".align\t4", "", "elf32-mcore-big", bfd_arch_mcore, mcore_be_jtab, sizeof (mcore_be_jtab), 8 } , { #define MMCORE_ELF_LE 8 "mcore-elf-le", ".byte", ".short", ".long", ".asciz", "//", "jmpi\t1\n\tnop\n\t.long", ".global", ".space", ".align\t2",".align\t4", "-EL", "elf32-mcore-little", bfd_arch_mcore, mcore_le_jtab, sizeof (mcore_le_jtab), 8 } , { 0 } }; typedef struct dlist { char *text; struct dlist *next; } dlist_type; typedef struct export { const char *name; const char *internal_name; int ordinal; int constant; int noname; int data; int hint; struct export *next; } export_type; /* A list of symbols which we should not export. */ struct string_list { struct string_list *next; char *string; }; static struct string_list *excludes; static const char *rvaafter PARAMS ((int)); static const char *rvabefore PARAMS ((int)); static const char *asm_prefix PARAMS ((int)); static void append_import PARAMS ((const char *, const char *, int)); static void run PARAMS ((const char *, char *)); static void scan_drectve_symbols PARAMS ((bfd *)); static void scan_filtered_symbols PARAMS ((bfd *, PTR, long, unsigned int)); static void add_excludes PARAMS ((const char *)); static boolean match_exclude PARAMS ((const char *)); static void set_default_excludes PARAMS ((void)); static long filter_symbols PARAMS ((bfd *, PTR, long, unsigned int)); static void scan_all_symbols PARAMS ((bfd *)); static void scan_open_obj_file PARAMS ((bfd *)); static void scan_obj_file PARAMS ((const char *)); static void dump_def_info PARAMS ((FILE *)); static int sfunc PARAMS ((const void *, const void *)); static void flush_page PARAMS ((FILE *, long *, int, int)); static void gen_def_file PARAMS ((void)); static void generate_idata_ofile PARAMS ((FILE *)); static void gen_exp_file PARAMS ((void)); static const char *xlate PARAMS ((const char *)); #if 0 static void dump_iat PARAMS ((FILE *, export_type *)); #endif static char *make_label PARAMS ((const char *, const char *)); static bfd *make_one_lib_file PARAMS ((export_type *, int)); static bfd *make_head PARAMS ((void)); static bfd *make_tail PARAMS ((void)); static void gen_lib_file PARAMS ((void)); static int pfunc PARAMS ((const void *, const void *)); static int nfunc PARAMS ((const void *, const void *)); static void remove_null_names PARAMS ((export_type **)); static void dtab PARAMS ((export_type **)); static void process_duplicates PARAMS ((export_type **)); static void fill_ordinals PARAMS ((export_type **)); static int alphafunc PARAMS ((const void *, const void *)); static void mangle_defs PARAMS ((void)); static void usage PARAMS ((FILE *, int)); static void display PARAMS ((const char *, va_list)); static void inform PARAMS ((const char *, ...)); static void warn PARAMS ((const char *, ...)); static void display (message, args) const char * message; va_list args; { if (program_name != NULL) fprintf (stderr, "%s: ", program_name); vfprintf (stderr, message, args); if (message [strlen (message) - 1] != '\n') fputc ('\n', stderr); } static void #ifdef __STDC__ inform (const char * message, ...) #else inform (message, va_alist) const char * message; va_dcl #endif { va_list args; if (!verbose) return; #ifdef __STDC__ va_start (args, message); #else va_start (args); #endif display (message, args); va_end (args); } static void #ifdef __STDC__ warn (const char * message, ...) #else warn (message, va_alist) const char * message; va_dcl #endif { va_list args; #ifdef __STDC__ va_start (args, message); #else va_start (args); #endif display (message, args); va_end (args); } static const char * rvaafter (machine) int machine; { switch (machine) { case MARM: case M386: case MPPC: case MTHUMB: case MARM_INTERWORK: case MMCORE_BE: case MMCORE_LE: case MMCORE_ELF: case MMCORE_ELF_LE: break; default: /* xgettext:c-format */ fatal (_("Internal error: Unknown machine type: %d\n"), machine); break; } return ""; } static const char * rvabefore (machine) int machine; { switch (machine) { case MARM: case M386: case MPPC: case MTHUMB: case MARM_INTERWORK: case MMCORE_BE: case MMCORE_LE: case MMCORE_ELF: case MMCORE_ELF_LE: return ".rva\t"; default: /* xgettext:c-format */ fatal (_("Internal error: Unknown machine type: %d\n"), machine); break; } return ""; } static const char * asm_prefix (machine) int machine; { switch (machine) { case MARM: case MPPC: case MTHUMB: case MARM_INTERWORK: case MMCORE_BE: case MMCORE_LE: case MMCORE_ELF: case MMCORE_ELF_LE: break; case M386: return "_"; default: /* xgettext:c-format */ fatal (_("Internal error: Unknown machine type: %d\n"), machine); break; } return ""; } #define ASM_BYTE mtable[machine].how_byte #define ASM_SHORT mtable[machine].how_short #define ASM_LONG mtable[machine].how_long #define ASM_TEXT mtable[machine].how_asciz #define ASM_C mtable[machine].how_comment #define ASM_JUMP mtable[machine].how_jump #define ASM_GLOBAL mtable[machine].how_global #define ASM_SPACE mtable[machine].how_space #define ASM_ALIGN_SHORT mtable[machine].how_align_short #define ASM_RVA_BEFORE rvabefore(machine) #define ASM_RVA_AFTER rvaafter(machine) #define ASM_PREFIX asm_prefix(machine) #define ASM_ALIGN_LONG mtable[machine].how_align_long #define HOW_BFD_READ_TARGET 0 /* always default*/ #define HOW_BFD_WRITE_TARGET mtable[machine].how_bfd_target #define HOW_BFD_ARCH mtable[machine].how_bfd_arch #define HOW_JTAB mtable[machine].how_jtab #define HOW_JTAB_SIZE mtable[machine].how_jtab_size #define HOW_JTAB_ROFF mtable[machine].how_jtab_roff #define ASM_SWITCHES mtable[machine].how_default_as_switches static char **oav; void process_def_file (name) const char *name; { FILE *f = fopen (name, FOPEN_RT); if (!f) /* xgettext:c-format */ fatal (_("Can't open def file: %s"), name); yyin = f; /* xgettext:c-format */ inform (_("Processing def file: %s"), name); yyparse (); inform (_("Processed def file")); } /**********************************************************************/ /* Communications with the parser */ static const char *d_name; /* Arg to NAME or LIBRARY */ static int d_nfuncs; /* Number of functions exported */ static int d_named_nfuncs; /* Number of named functions exported */ static int d_low_ord; /* Lowest ordinal index */ static int d_high_ord; /* Highest ordinal index */ static export_type *d_exports; /*list of exported functions */ static export_type **d_exports_lexically; /* vector of exported functions in alpha order */ static dlist_type *d_list; /* Descriptions */ static dlist_type *a_list; /* Stuff to go in directives */ static int d_is_dll; static int d_is_exe; int yyerror (err) const char *err; { /* xgettext:c-format */ warn (_("Syntax error in def file %s:%d\n"), def_file, linenumber); return 0; } void def_exports (name, internal_name, ordinal, noname, constant, data) const char *name; const char *internal_name; int ordinal; int noname; int constant; int data; { struct export *p = (struct export *) xmalloc (sizeof (*p)); p->name = name; p->internal_name = internal_name ? internal_name : name; p->ordinal = ordinal; p->constant = constant; p->noname = noname; p->data = data; p->next = d_exports; d_exports = p; d_nfuncs++; } void def_name (name, base) const char *name; int base; { /* xgettext:c-format */ inform (_("NAME: %s base: %x"), name, base); if (d_is_dll) warn (_("Can't have LIBRARY and NAME\n")); d_name = name; /* if --dllname not provided, use the one in the DEF file. FIXME: Is this appropriate for executables? */ if (! dll_name) dll_name = xstrdup (name); d_is_exe = 1; } void def_library (name, base) const char *name; int base; { /* xgettext:c-format */ inform (_("LIBRARY: %s base: %x"), name, base); if (d_is_exe) warn (_("%s: Can't have LIBRARY and NAME\n"), program_name); d_name = name; /* if --dllname not provided, use the one in the DEF file. */ if (! dll_name) dll_name = xstrdup (name); d_is_dll = 1; } void def_description (desc) const char *desc; { dlist_type *d = (dlist_type *) xmalloc (sizeof (dlist_type)); d->text = xstrdup (desc); d->next = d_list; d_list = d; } void new_directive (dir) char *dir; { dlist_type *d = (dlist_type *) xmalloc (sizeof (dlist_type)); d->text = xstrdup (dir); d->next = a_list; a_list = d; } void def_heapsize (reserve, commit) int reserve; int commit; { char b[200]; if (commit > 0) sprintf (b, "-heap 0x%x,0x%x ", reserve, commit); else sprintf (b, "-heap 0x%x ", reserve); new_directive (xstrdup (b)); } void def_stacksize (reserve, commit) int reserve; int commit; { char b[200]; if (commit > 0) sprintf (b, "-stack 0x%x,0x%x ", reserve, commit); else sprintf (b, "-stack 0x%x ", reserve); new_directive (xstrdup (b)); } /* append_import simply adds the given import definition to the global import_list. It is used by def_import. */ static void append_import (symbol_name, dll_name, func_ordinal) const char *symbol_name; const char *dll_name; int func_ordinal; { iheadtype **pq; iheadtype *q; for (pq = &import_list; *pq != NULL; pq = &(*pq)->next) { if (strcmp ((*pq)->dllname, dll_name) == 0) { q = *pq; q->functail->next = xmalloc (sizeof (ifunctype)); q->functail = q->functail->next; q->functail->ord = func_ordinal; q->functail->name = xstrdup (symbol_name); q->functail->next = NULL; q->nfuncs++; return; } } q = xmalloc (sizeof (iheadtype)); q->dllname = xstrdup (dll_name); q->nfuncs = 1; q->funchead = xmalloc (sizeof (ifunctype)); q->functail = q->funchead; q->next = NULL; q->functail->name = xstrdup (symbol_name); q->functail->ord = func_ordinal; q->functail->next = NULL; *pq = q; } /* def_import is called from within defparse.y when an IMPORT declaration is encountered. Depending on the form of the declaration, the module name may or may not need ".dll" to be appended to it, the name of the function may be stored in internal or entry, and there may or may not be an ordinal value associated with it. */ /* A note regarding the parse modes: In defparse.y we have to accept import declarations which follow any one of the following forms: = . = . . . Furthermore, the dll's name may or may not end with ".dll", which complicates the parsing a little. Normally the dll's name is passed to def_import() in the "module" parameter, but when it ends with ".dll" it gets passed in "module" sans ".dll" and that needs to be reappended. def_import gets five parameters: APP_NAME - the name of the function in the application, if present, or NULL if not present. MODULE - the name of the dll, possibly sans extension (ie, '.dll'). DLLEXT - the extension of the dll, if present, NULL if not present. ENTRY - the name of the function in the dll, if present, or NULL. ORD_VAL - the numerical tag of the function in the dll, if present, or NULL. Exactly one of or must be present (i.e., not NULL). */ void def_import (app_name, module, dllext, entry, ord_val) const char *app_name; const char *module; const char *dllext; const char *entry; int ord_val; { const char *application_name; char *buf; if (entry != NULL) application_name = entry; else { if (app_name != NULL) application_name = app_name; else application_name = ""; } if (dllext != NULL) { buf = (char *) alloca (strlen (module) + strlen (dllext) + 2); sprintf (buf, "%s.%s", module, dllext); module = buf; } append_import (application_name, module, ord_val); } void def_version (major, minor) int major; int minor; { printf ("VERSION %d.%d\n", major, minor); } void def_section (name, attr) const char *name; int attr; { char buf[200]; char atts[5]; char *d = atts; if (attr & 1) *d++ = 'R'; if (attr & 2) *d++ = 'W'; if (attr & 4) *d++ = 'X'; if (attr & 8) *d++ = 'S'; *d++ = 0; sprintf (buf, "-attr %s %s", name, atts); new_directive (xstrdup (buf)); } void def_code (attr) int attr; { def_section ("CODE", attr); } void def_data (attr) int attr; { def_section ("DATA", attr); } /**********************************************************************/ static void run (what, args) const char *what; char *args; { char *s; int pid, wait_status; int i; const char **argv; char *errmsg_fmt, *errmsg_arg; char *temp_base = choose_temp_base (); inform ("run: %s %s\n", what, args); /* Count the args */ i = 0; for (s = args; *s; s++) if (*s == ' ') i++; i++; argv = alloca (sizeof (char *) * (i + 3)); i = 0; argv[i++] = what; s = args; while (1) { while (*s == ' ') ++s; argv[i++] = s; while (*s != ' ' && *s != 0) s++; if (*s == 0) break; *s++ = 0; } argv[i++] = NULL; pid = pexecute (argv[0], (char * const *) argv, program_name, temp_base, &errmsg_fmt, &errmsg_arg, PEXECUTE_ONE | PEXECUTE_SEARCH); if (pid == -1) { inform (strerror (errno)); fatal (errmsg_fmt, errmsg_arg); } pid = pwait (pid, & wait_status, 0); if (pid == -1) { /* xgettext:c-format */ fatal (_("wait: %s"), strerror (errno)); } else if (WIFSIGNALED (wait_status)) { /* xgettext:c-format */ fatal (_("subprocess got fatal signal %d"), WTERMSIG (wait_status)); } else if (WIFEXITED (wait_status)) { if (WEXITSTATUS (wait_status) != 0) /* xgettext:c-format */ warn (_("%s exited with status %d\n"), what, WEXITSTATUS (wait_status)); } else abort (); } /* Look for a list of symbols to export in the .drectve section of ABFD. Pass each one to def_exports. */ static void scan_drectve_symbols (abfd) bfd *abfd; { asection * s; int size; char * buf; char * p; char * e; /* Look for .drectve's */ s = bfd_get_section_by_name (abfd, DRECTVE_SECTION_NAME); if (s == NULL) return; size = bfd_get_section_size_before_reloc (s); buf = xmalloc (size); bfd_get_section_contents (abfd, s, buf, 0, size); /* xgettext:c-format */ inform (_("Sucking in info from %s section in %s\n"), DRECTVE_SECTION_NAME, bfd_get_filename (abfd)); /* Search for -export: strings. The exported symbols can optionally have type tags (eg., -export:foo,data), so handle those as well. Currently only data tag is supported. */ p = buf; e = buf + size; while (p < e) { if (p[0] == '-' && strncmp (p, "-export:", 8) == 0) { char * name; char * c; flagword flags = BSF_FUNCTION; p += 8; name = p; while (p < e && *p != ',' && *p != ' ' && *p != '-') p++; c = xmalloc (p - name + 1); memcpy (c, name, p - name); c[p - name] = 0; if (p < e && *p == ',') /* found type tag. */ { char *tag_start = ++p; while (p < e && *p != ' ' && *p != '-') p++; if (strncmp (tag_start, "data", 4) == 0) flags &= ~BSF_FUNCTION; } /* FIXME: The 5th arg is for the `constant' field. What should it be? Not that it matters since it's not currently useful. */ def_exports (c, 0, -1, 0, 0, ! (flags & BSF_FUNCTION)); if (add_stdcall_alias && strchr (c, '@')) { char *exported_name = xstrdup (c); char *atsym = strchr (exported_name, '@'); *atsym = '\0'; /* Note: stdcall alias symbols can never be data. */ def_exports (exported_name, xstrdup (c), -1, 0, 0, 0); } } else p++; } free (buf); } /* Look through the symbols in MINISYMS, and add each one to list of symbols to export. */ static void scan_filtered_symbols (abfd, minisyms, symcount, size) bfd *abfd; PTR minisyms; long symcount; unsigned int size; { asymbol *store; bfd_byte *from, *fromend; store = bfd_make_empty_symbol (abfd); if (store == NULL) bfd_fatal (bfd_get_filename (abfd)); from = (bfd_byte *) minisyms; fromend = from + symcount * size; for (; from < fromend; from += size) { asymbol *sym; const char *symbol_name; sym = bfd_minisymbol_to_symbol (abfd, false, from, store); if (sym == NULL) bfd_fatal (bfd_get_filename (abfd)); symbol_name = bfd_asymbol_name (sym); if (bfd_get_symbol_leading_char (abfd) == symbol_name[0]) ++symbol_name; def_exports (xstrdup (symbol_name) , 0, -1, 0, 0, ! (sym->flags & BSF_FUNCTION)); if (add_stdcall_alias && strchr (symbol_name, '@')) { char *exported_name = xstrdup (symbol_name); char *atsym = strchr (exported_name, '@'); *atsym = '\0'; /* Note: stdcall alias symbols can never be data. */ def_exports (exported_name, xstrdup (symbol_name), -1, 0, 0, 0); } } } /* Add a list of symbols to exclude. */ static void add_excludes (new_excludes) const char *new_excludes; { char *local_copy; char *exclude_string; local_copy = xstrdup (new_excludes); exclude_string = strtok (local_copy, ",:"); for (; exclude_string; exclude_string = strtok (NULL, ",:")) { struct string_list *new_exclude; new_exclude = ((struct string_list *) xmalloc (sizeof (struct string_list))); new_exclude->string = (char *) xmalloc (strlen (exclude_string) + 2); /* FIXME: Is it always right to add a leading underscore? */ sprintf (new_exclude->string, "_%s", exclude_string); new_exclude->next = excludes; excludes = new_exclude; /* xgettext:c-format */ inform (_("Excluding symbol: %s\n"), exclude_string); } free (local_copy); } /* See if STRING is on the list of symbols to exclude. */ static boolean match_exclude (string) const char *string; { struct string_list *excl_item; for (excl_item = excludes; excl_item; excl_item = excl_item->next) if (strcmp (string, excl_item->string) == 0) return true; return false; } /* Add the default list of symbols to exclude. */ static void set_default_excludes (void) { add_excludes (default_excludes); } /* Choose which symbols to export. */ static long filter_symbols (abfd, minisyms, symcount, size) bfd *abfd; PTR minisyms; long symcount; unsigned int size; { bfd_byte *from, *fromend, *to; asymbol *store; store = bfd_make_empty_symbol (abfd); if (store == NULL) bfd_fatal (bfd_get_filename (abfd)); from = (bfd_byte *) minisyms; fromend = from + symcount * size; to = (bfd_byte *) minisyms; for (; from < fromend; from += size) { int keep = 0; asymbol *sym; sym = bfd_minisymbol_to_symbol (abfd, false, (const PTR) from, store); if (sym == NULL) bfd_fatal (bfd_get_filename (abfd)); /* Check for external and defined only symbols. */ keep = (((sym->flags & BSF_GLOBAL) != 0 || (sym->flags & BSF_WEAK) != 0 || bfd_is_com_section (sym->section)) && ! bfd_is_und_section (sym->section)); keep = keep && ! match_exclude (sym->name); if (keep) { memcpy (to, from, size); to += size; } } return (to - (bfd_byte *) minisyms) / size; } /* Export all symbols in ABFD, except for ones we were told not to export. */ static void scan_all_symbols (abfd) bfd *abfd; { long symcount; PTR minisyms; unsigned int size; /* Ignore bfds with an import descriptor table. We assume that any such BFD contains symbols which are exported from another DLL, and we don't want to reexport them from here. */ if (bfd_get_section_by_name (abfd, ".idata$4")) return; if (! (bfd_get_file_flags (abfd) & HAS_SYMS)) { /* xgettext:c-format */ warn (_("%s: no symbols\n"), bfd_get_filename (abfd)); return; } symcount = bfd_read_minisymbols (abfd, false, &minisyms, &size); if (symcount < 0) bfd_fatal (bfd_get_filename (abfd)); if (symcount == 0) { /* xgettext:c-format */ warn (_("%s: no symbols\n"), bfd_get_filename (abfd)); return; } /* Discard the symbols we don't want to export. It's OK to do this in place; we'll free the storage anyway. */ symcount = filter_symbols (abfd, minisyms, symcount, size); scan_filtered_symbols (abfd, minisyms, symcount, size); free (minisyms); } /* Look at the object file to decide which symbols to export. */ static void scan_open_obj_file (abfd) bfd *abfd; { if (export_all_symbols) scan_all_symbols (abfd); else scan_drectve_symbols (abfd); /* FIXME: we ought to read in and block out the base relocations */ /* xgettext:c-format */ inform (_("Done reading %s\n"), bfd_get_filename (abfd)); } static void scan_obj_file (filename) const char *filename; { bfd * f = bfd_openr (filename, 0); if (!f) /* xgettext:c-format */ fatal (_("Unable to open object file: %s"), filename); /* xgettext:c-format */ inform (_("Scanning object file %s"), filename); if (bfd_check_format (f, bfd_archive)) { bfd *arfile = bfd_openr_next_archived_file (f, 0); while (arfile) { if (bfd_check_format (arfile, bfd_object)) scan_open_obj_file (arfile); bfd_close (arfile); arfile = bfd_openr_next_archived_file (f, arfile); } #ifdef DLLTOOL_MCORE_ELF if (mcore_elf_out_file) inform (_("Cannot produce mcore-elf dll from archive file: %s"), filename); #endif } else if (bfd_check_format (f, bfd_object)) { scan_open_obj_file (f); #ifdef DLLTOOL_MCORE_ELF if (mcore_elf_out_file) mcore_elf_cache_filename ((char *) filename); #endif } bfd_close (f); } /**********************************************************************/ static void dump_def_info (f) FILE *f; { int i; export_type *exp; fprintf (f, "%s ", ASM_C); for (i = 0; oav[i]; i++) fprintf (f, "%s ", oav[i]); fprintf (f, "\n"); for (i = 0, exp = d_exports; exp; i++, exp = exp->next) { fprintf (f, "%s %d = %s %s @ %d %s%s%s\n", ASM_C, i, exp->name, exp->internal_name, exp->ordinal, exp->noname ? "NONAME " : "", exp->constant ? "CONSTANT" : "", exp->data ? "DATA" : ""); } } /* Generate the .exp file */ static int sfunc (a, b) const void *a; const void *b; { return *(const long *) a - *(const long *) b; } static void flush_page (f, need, page_addr, on_page) FILE *f; long *need; int page_addr; int on_page; { int i; /* Flush this page */ fprintf (f, "\t%s\t0x%08x\t%s Starting RVA for chunk\n", ASM_LONG, page_addr, ASM_C); fprintf (f, "\t%s\t0x%x\t%s Size of block\n", ASM_LONG, (on_page * 2) + (on_page & 1) * 2 + 8, ASM_C); for (i = 0; i < on_page; i++) fprintf (f, "\t%s\t0x%lx\n", ASM_SHORT, ((need[i] - page_addr) | 0x3000) & 0xffff); /* And padding */ if (on_page & 1) fprintf (f, "\t%s\t0x%x\n", ASM_SHORT, 0 | 0x0000); } static void gen_def_file () { int i; export_type *exp; inform (_("Adding exports to output file")); fprintf (output_def, ";"); for (i = 0; oav[i]; i++) fprintf (output_def, " %s", oav[i]); fprintf (output_def, "\nEXPORTS\n"); for (i = 0, exp = d_exports; exp; i++, exp = exp->next) { char *quote = strchr (exp->name, '.') ? "\"" : ""; char *res = cplus_demangle (exp->internal_name, DMGL_ANSI | DMGL_PARAMS); if (strcmp (exp->name, exp->internal_name) == 0) { fprintf (output_def, "\t%s%s%s @ %d%s%s ; %s\n", quote, exp->name, quote, exp->ordinal, exp->noname ? " NONAME" : "", exp->data ? " DATA" : "", res ? res : ""); } else { char *quote1 = strchr (exp->internal_name, '.') ? "\"" : ""; /* char *alias = */ fprintf (output_def, "\t%s%s%s = %s%s%s @ %d%s%s ; %s\n", quote, exp->name, quote, quote1, exp->internal_name, quote1, exp->ordinal, exp->noname ? " NONAME" : "", exp->data ? " DATA" : "", res ? res : ""); } if (res) free (res); } inform (_("Added exports to output file")); } /* generate_idata_ofile generates the portable assembly source code for the idata sections. It appends the source code to the end of the file. */ static void generate_idata_ofile (filvar) FILE *filvar; { iheadtype *headptr; ifunctype *funcptr; int headindex; int funcindex; int nheads; if (import_list == NULL) return; fprintf (filvar, "%s Import data sections\n", ASM_C); fprintf (filvar, "\n\t.section\t.idata$2\n"); fprintf (filvar, "\t%s\tdoi_idata\n", ASM_GLOBAL); fprintf (filvar, "doi_idata:\n"); nheads = 0; for (headptr = import_list; headptr != NULL; headptr = headptr->next) { fprintf (filvar, "\t%slistone%d%s\t%s %s\n", ASM_RVA_BEFORE, nheads, ASM_RVA_AFTER, ASM_C, headptr->dllname); fprintf (filvar, "\t%s\t0\n", ASM_LONG); fprintf (filvar, "\t%s\t0\n", ASM_LONG); fprintf (filvar, "\t%sdllname%d%s\n", ASM_RVA_BEFORE, nheads, ASM_RVA_AFTER); fprintf (filvar, "\t%slisttwo%d%s\n\n", ASM_RVA_BEFORE, nheads, ASM_RVA_AFTER); nheads++; } fprintf (filvar, "\t%s\t0\n", ASM_LONG); /* NULL record at */ fprintf (filvar, "\t%s\t0\n", ASM_LONG); /* end of idata$2 */ fprintf (filvar, "\t%s\t0\n", ASM_LONG); /* section */ fprintf (filvar, "\t%s\t0\n", ASM_LONG); fprintf (filvar, "\t%s\t0\n", ASM_LONG); fprintf (filvar, "\n\t.section\t.idata$4\n"); headindex = 0; for (headptr = import_list; headptr != NULL; headptr = headptr->next) { fprintf (filvar, "listone%d:\n", headindex); for ( funcindex = 0; funcindex < headptr->nfuncs; funcindex++ ) fprintf (filvar, "\t%sfuncptr%d_%d%s\n", ASM_RVA_BEFORE, headindex, funcindex, ASM_RVA_AFTER); fprintf (filvar,"\t%s\t0\n", ASM_LONG); /* NULL terminating list */ headindex++; } fprintf (filvar, "\n\t.section\t.idata$5\n"); headindex = 0; for (headptr = import_list; headptr != NULL; headptr = headptr->next) { fprintf (filvar, "listtwo%d:\n", headindex); for ( funcindex = 0; funcindex < headptr->nfuncs; funcindex++ ) fprintf (filvar, "\t%sfuncptr%d_%d%s\n", ASM_RVA_BEFORE, headindex, funcindex, ASM_RVA_AFTER); fprintf (filvar, "\t%s\t0\n", ASM_LONG); /* NULL terminating list */ headindex++; } fprintf (filvar, "\n\t.section\t.idata$6\n"); headindex = 0; for (headptr = import_list; headptr != NULL; headptr = headptr->next) { funcindex = 0; for (funcptr = headptr->funchead; funcptr != NULL; funcptr = funcptr->next) { fprintf (filvar,"funcptr%d_%d:\n", headindex, funcindex); fprintf (filvar,"\t%s\t%d\n", ASM_SHORT, ((funcptr->ord) & 0xFFFF)); fprintf (filvar,"\t%s\t\"%s\"\n", ASM_TEXT, funcptr->name); fprintf (filvar,"\t%s\t0\n", ASM_BYTE); funcindex++; } headindex++; } fprintf (filvar, "\n\t.section\t.idata$7\n"); headindex = 0; for (headptr = import_list; headptr != NULL; headptr = headptr->next) { fprintf (filvar,"dllname%d:\n", headindex); fprintf (filvar,"\t%s\t\"%s\"\n", ASM_TEXT, headptr->dllname); fprintf (filvar,"\t%s\t0\n", ASM_BYTE); headindex++; } } /* Assemble the specified file. */ static void assemble_file (source, dest) const char * source; const char * dest; { char * cmd; cmd = (char *) alloca (strlen (ASM_SWITCHES) + strlen (as_flags) + strlen (source) + strlen (dest) + 50); sprintf (cmd, "%s %s -o %s %s", ASM_SWITCHES, as_flags, dest, source); run (as_name, cmd); } static void gen_exp_file () { FILE *f; int i; export_type *exp; dlist_type *dl; /* xgettext:c-format */ inform (_("Generating export file: %s\n"), exp_name); f = fopen (TMP_ASM, FOPEN_WT); if (!f) /* xgettext:c-format */ fatal (_("Unable to open temporary assembler file: %s"), TMP_ASM); /* xgettext:c-format */ inform (_("Opened temporary file: %s"), TMP_ASM); dump_def_info (f); if (d_exports) { fprintf (f, "\t.section .edata\n\n"); fprintf (f, "\t%s 0 %s Allways 0\n", ASM_LONG, ASM_C); fprintf (f, "\t%s 0x%lx %s Time and date\n", ASM_LONG, (long) time(0), ASM_C); fprintf (f, "\t%s 0 %s Major and Minor version\n", ASM_LONG, ASM_C); fprintf (f, "\t%sname%s %s Ptr to name of dll\n", ASM_RVA_BEFORE, ASM_RVA_AFTER, ASM_C); fprintf (f, "\t%s %d %s Starting ordinal of exports\n", ASM_LONG, d_low_ord, ASM_C); fprintf (f, "\t%s %d %s Number of functions\n", ASM_LONG, d_high_ord - d_low_ord + 1, ASM_C); fprintf(f,"\t%s named funcs %d, low ord %d, high ord %d\n", ASM_C, d_named_nfuncs, d_low_ord, d_high_ord); fprintf (f, "\t%s %d %s Number of names\n", ASM_LONG, show_allnames ? d_high_ord - d_low_ord + 1 : d_named_nfuncs, ASM_C); fprintf (f, "\t%safuncs%s %s Address of functions\n", ASM_RVA_BEFORE, ASM_RVA_AFTER, ASM_C); fprintf (f, "\t%sanames%s %s Address of Name Pointer Table\n", ASM_RVA_BEFORE, ASM_RVA_AFTER, ASM_C); fprintf (f, "\t%sanords%s %s Address of ordinals\n", ASM_RVA_BEFORE, ASM_RVA_AFTER, ASM_C); fprintf (f, "name: %s \"%s\"\n", ASM_TEXT, dll_name); fprintf(f,"%s Export address Table\n", ASM_C); fprintf(f,"\t%s\n", ASM_ALIGN_LONG); fprintf (f, "afuncs:\n"); i = d_low_ord; for (exp = d_exports; exp; exp = exp->next) { if (exp->ordinal != i) { #if 0 fprintf (f, "\t%s\t%d\t%s %d..%d missing\n", ASM_SPACE, (exp->ordinal - i) * 4, ASM_C, i, exp->ordinal - 1); i = exp->ordinal; #endif while (i < exp->ordinal) { fprintf(f,"\t%s\t0\n", ASM_LONG); i++; } } fprintf (f, "\t%s%s%s%s\t%s %d\n", ASM_RVA_BEFORE, ASM_PREFIX, exp->internal_name, ASM_RVA_AFTER, ASM_C, exp->ordinal); i++; } fprintf (f,"%s Export Name Pointer Table\n", ASM_C); fprintf (f, "anames:\n"); for (i = 0; (exp = d_exports_lexically[i]); i++) { if (!exp->noname || show_allnames) fprintf (f, "\t%sn%d%s\n", ASM_RVA_BEFORE, exp->ordinal, ASM_RVA_AFTER); } fprintf (f,"%s Export Oridinal Table\n", ASM_C); fprintf (f, "anords:\n"); for (i = 0; (exp = d_exports_lexically[i]); i++) { if (!exp->noname || show_allnames) fprintf (f, "\t%s %d\n", ASM_SHORT, exp->ordinal - d_low_ord); } fprintf(f,"%s Export Name Table\n", ASM_C); for (i = 0; (exp = d_exports_lexically[i]); i++) if (!exp->noname || show_allnames) fprintf (f, "n%d: %s \"%s\"\n", exp->ordinal, ASM_TEXT, exp->name); if (a_list) { fprintf (f, "\t.section %s\n", DRECTVE_SECTION_NAME); for (dl = a_list; dl; dl = dl->next) { fprintf (f, "\t%s\t\"%s\"\n", ASM_TEXT, dl->text); } } if (d_list) { fprintf (f, "\t.section .rdata\n"); for (dl = d_list; dl; dl = dl->next) { char *p; int l; /* We dont output as ascii 'cause there can be quote characters in the string */ l = 0; for (p = dl->text; *p; p++) { if (l == 0) fprintf (f, "\t%s\t", ASM_BYTE); else fprintf (f, ","); fprintf (f, "%d", *p); if (p[1] == 0) { fprintf (f, ",0\n"); break; } if (++l == 10) { fprintf (f, "\n"); l = 0; } } } } } /* Add to the output file a way of getting to the exported names without using the import library. */ if (add_indirect) { fprintf (f, "\t.section\t.rdata\n"); for (i = 0, exp = d_exports; exp; i++, exp = exp->next) if (!exp->noname || show_allnames) { /* We use a single underscore for MS compatibility, and a double underscore for backward compatibility with old cygwin releases. */ fprintf (f, "\t%s\t__imp_%s\n", ASM_GLOBAL, exp->name); fprintf (f, "\t%s\t_imp__%s\n", ASM_GLOBAL, exp->name); fprintf (f, "__imp_%s:\n", exp->name); fprintf (f, "_imp__%s:\n", exp->name); fprintf (f, "\t%s\t%s\n", ASM_LONG, exp->name); } } /* Dump the reloc section if a base file is provided */ if (base_file) { int addr; long need[PAGE_SIZE]; long page_addr; int numbytes; int num_entries; long *copy; int j; int on_page; fprintf (f, "\t.section\t.init\n"); fprintf (f, "lab:\n"); fseek (base_file, 0, SEEK_END); numbytes = ftell (base_file); fseek (base_file, 0, SEEK_SET); copy = xmalloc (numbytes); fread (copy, 1, numbytes, base_file); num_entries = numbytes / sizeof (long); fprintf (f, "\t.section\t.reloc\n"); if (num_entries) { int src; int dst = 0; int last = -1; qsort (copy, num_entries, sizeof (long), sfunc); /* Delete duplcates */ for (src = 0; src < num_entries; src++) { if (last != copy[src]) last = copy[dst++] = copy[src]; } num_entries = dst; addr = copy[0]; page_addr = addr & PAGE_MASK; /* work out the page addr */ on_page = 0; for (j = 0; j < num_entries; j++) { addr = copy[j]; if ((addr & PAGE_MASK) != page_addr) { flush_page (f, need, page_addr, on_page); on_page = 0; page_addr = addr & PAGE_MASK; } need[on_page++] = addr; } flush_page (f, need, page_addr, on_page); /* fprintf (f, "\t%s\t0,0\t%s End\n", ASM_LONG, ASM_C);*/ } } generate_idata_ofile (f); fclose (f); /* assemble the file */ assemble_file (TMP_ASM, exp_name); if (dontdeltemps == 0) unlink (TMP_ASM); inform (_("Generated exports file")); } static const char * xlate (name) const char *name; { if (add_underscore) { char *copy = xmalloc (strlen (name) + 2); copy[0] = '_'; strcpy (copy + 1, name); name = copy; } if (killat) { char *p; p = strchr (name, '@'); if (p) *p = 0; } return name; } /**********************************************************************/ #if 0 static void dump_iat (f, exp) FILE *f; export_type *exp; { if (exp->noname && !show_allnames ) { fprintf (f, "\t%s\t0x%08x\n", ASM_LONG, exp->ordinal | 0x80000000); /* hint or orindal ?? */ } else { fprintf (f, "\t%sID%d%s\n", ASM_RVA_BEFORE, exp->ordinal, ASM_RVA_AFTER); } } #endif typedef struct { int id; const char *name; int flags; int align; asection *sec; asymbol *sym; asymbol **sympp; int size; unsigned char *data; } sinfo; #ifndef DLLTOOL_PPC #define TEXT 0 #define DATA 1 #define BSS 2 #define IDATA7 3 #define IDATA5 4 #define IDATA4 5 #define IDATA6 6 #define NSECS 7 static sinfo secdata[NSECS] = { { TEXT, ".text", SEC_CODE | SEC_HAS_CONTENTS, 2}, { DATA, ".data", SEC_DATA, 2}, { BSS, ".bss", 0, 2}, { IDATA7, ".idata$7", SEC_HAS_CONTENTS, 2}, { IDATA5, ".idata$5", SEC_HAS_CONTENTS, 2}, { IDATA4, ".idata$4", SEC_HAS_CONTENTS, 2}, { IDATA6, ".idata$6", SEC_HAS_CONTENTS, 1} }; #else /* Sections numbered to make the order the same as other PowerPC NT */ /* compilers. This also keeps funny alignment thingies from happening. */ #define TEXT 0 #define PDATA 1 #define RDATA 2 #define IDATA5 3 #define IDATA4 4 #define IDATA6 5 #define IDATA7 6 #define DATA 7 #define BSS 8 #define NSECS 9 static sinfo secdata[NSECS] = { { TEXT, ".text", SEC_CODE | SEC_HAS_CONTENTS, 3}, { PDATA, ".pdata", SEC_HAS_CONTENTS, 2}, { RDATA, ".reldata", SEC_HAS_CONTENTS, 2}, { IDATA5, ".idata$5", SEC_HAS_CONTENTS, 2}, { IDATA4, ".idata$4", SEC_HAS_CONTENTS, 2}, { IDATA6, ".idata$6", SEC_HAS_CONTENTS, 1}, { IDATA7, ".idata$7", SEC_HAS_CONTENTS, 2}, { DATA, ".data", SEC_DATA, 2}, { BSS, ".bss", 0, 2} }; #endif /* This is what we're trying to make. We generate the imp symbols with both single and double underscores, for compatibility. .text .global _GetFileVersionInfoSizeW@8 .global __imp_GetFileVersionInfoSizeW@8 _GetFileVersionInfoSizeW@8: jmp * __imp_GetFileVersionInfoSizeW@8 .section .idata$7 # To force loading of head .long __version_a_head # Import Address Table .section .idata$5 __imp_GetFileVersionInfoSizeW@8: .rva ID2 # Import Lookup Table .section .idata$4 .rva ID2 # Hint/Name table .section .idata$6 ID2: .short 2 .asciz "GetFileVersionInfoSizeW" For the PowerPC, here's the variation on the above scheme: # Rather than a simple "jmp *", the code to get to the dll function # looks like: .text lwz r11,[tocv]__imp_function_name(r2) # RELOC: 00000000 TOCREL16,TOCDEFN __imp_function_name lwz r12,0(r11) stw r2,4(r1) mtctr r12 lwz r2,4(r11) bctr */ static char * make_label (prefix, name) const char *prefix; const char *name; { int len = strlen (ASM_PREFIX) + strlen (prefix) + strlen (name); char *copy = xmalloc (len +1 ); strcpy (copy, ASM_PREFIX); strcat (copy, prefix); strcat (copy, name); return copy; } static bfd * make_one_lib_file (exp, i) export_type *exp; int i; { #if 0 { char *name; FILE *f; const char *prefix = "d"; char *dest; name = (char *) alloca (strlen (prefix) + 10); sprintf (name, "%ss%05d.s", prefix, i); f = fopen (name, FOPEN_WT); fprintf (f, "\t.text\n"); fprintf (f, "\t%s\t%s%s\n", ASM_GLOBAL, ASM_PREFIX, exp->name); fprintf (f, "\t%s\t__imp_%s\n", ASM_GLOBAL, exp->name); fprintf (f, "\t%s\t_imp__%s\n", ASM_GLOBAL, exp->name); fprintf (f, "%s%s:\n\t%s\t__imp_%s\n", ASM_PREFIX, exp->name, ASM_JUMP, exp->name); fprintf (f, "\t.section\t.idata$7\t%s To force loading of head\n", ASM_C); fprintf (f, "\t%s\t%s\n", ASM_LONG, head_label); fprintf (f,"%s Import Address Table\n", ASM_C); fprintf (f, "\t.section .idata$5\n"); fprintf (f, "__imp_%s:\n", exp->name); fprintf (f, "_imp__%s:\n", exp->name); dump_iat (f, exp); fprintf (f, "\n%s Import Lookup Table\n", ASM_C); fprintf (f, "\t.section .idata$4\n"); dump_iat (f, exp); if(!exp->noname || show_allnames) { fprintf (f, "%s Hint/Name table\n", ASM_C); fprintf (f, "\t.section .idata$6\n"); fprintf (f, "ID%d:\t%s\t%d\n", exp->ordinal, ASM_SHORT, exp->hint); fprintf (f, "\t%s\t\"%s\"\n", ASM_TEXT, xlate (exp->name)); } fclose (f); dest = (char *) alloca (strlen (prefix) + 10); sprintf (dest, "%ss%05d.o", prefix, i); assemble_file (name, dest); } #else /* if 0 */ { bfd * abfd; asymbol * exp_label; asymbol * iname; asymbol * iname2; asymbol * iname_lab; asymbol ** iname_lab_pp; asymbol ** iname_pp; #ifdef DLLTOOL_PPC asymbol ** fn_pp; asymbol ** toc_pp; #define EXTRA 2 #endif #ifndef EXTRA #define EXTRA 0 #endif asymbol * ptrs[NSECS + 4 + EXTRA + 1]; char * outname = xmalloc (10); int oidx = 0; sprintf (outname, "%s%05d.o", TMP_STUB, i); abfd = bfd_openw (outname, HOW_BFD_WRITE_TARGET); if (!abfd) /* xgettext:c-format */ fatal (_("bfd_open failed open stub file: %s"), outname); /* xgettext:c-format */ inform (_("Creating stub file: %s"), outname); bfd_set_format (abfd, bfd_object); bfd_set_arch_mach (abfd, HOW_BFD_ARCH, 0); #ifdef DLLTOOL_ARM if (machine == MARM_INTERWORK || machine == MTHUMB) bfd_set_private_flags (abfd, F_INTERWORK); #endif /* First make symbols for the sections */ for (i = 0; i < NSECS; i++) { sinfo *si = secdata + i; if (si->id != i) abort(); si->sec = bfd_make_section_old_way (abfd, si->name); bfd_set_section_flags (abfd, si->sec, si->flags); bfd_set_section_alignment(abfd, si->sec, si->align); si->sec->output_section = si->sec; si->sym = bfd_make_empty_symbol(abfd); si->sym->name = si->sec->name; si->sym->section = si->sec; si->sym->flags = BSF_LOCAL; si->sym->value = 0; ptrs[oidx] = si->sym; si->sympp = ptrs + oidx; si->size = 0; si->data = NULL; oidx++; } if (! exp->data) { exp_label = bfd_make_empty_symbol (abfd); exp_label->name = make_label ("", exp->name); /* On PowerPC, the function name points to a descriptor in the rdata section, the first element of which is a pointer to the code (..function_name), and the second points to the .toc */ #ifdef DLLTOOL_PPC if (machine == MPPC) exp_label->section = secdata[RDATA].sec; else #endif exp_label->section = secdata[TEXT].sec; exp_label->flags = BSF_GLOBAL; exp_label->value = 0; #ifdef DLLTOOL_ARM if (machine == MTHUMB) bfd_coff_set_symbol_class (abfd, exp_label, C_THUMBEXTFUNC); #endif ptrs[oidx++] = exp_label; } /* Generate imp symbols with one underscore for Microsoft compatibility, and with two underscores for backward compatibility with old versions of cygwin. */ iname = bfd_make_empty_symbol(abfd); iname->name = make_label ("__imp_", exp->name); iname->section = secdata[IDATA5].sec; iname->flags = BSF_GLOBAL; iname->value = 0; iname2 = bfd_make_empty_symbol(abfd); iname2->name = make_label ("_imp__", exp->name); iname2->section = secdata[IDATA5].sec; iname2->flags = BSF_GLOBAL; iname2->value = 0; iname_lab = bfd_make_empty_symbol(abfd); iname_lab->name = head_label; iname_lab->section = (asection *)&bfd_und_section; iname_lab->flags = 0; iname_lab->value = 0; iname_pp = ptrs + oidx; ptrs[oidx++] = iname; ptrs[oidx++] = iname2; iname_lab_pp = ptrs + oidx; ptrs[oidx++] = iname_lab; #ifdef DLLTOOL_PPC /* The symbol refering to the code (.text) */ { asymbol *function_name; function_name = bfd_make_empty_symbol(abfd); function_name->name = make_label ("..", exp->name); function_name->section = secdata[TEXT].sec; function_name->flags = BSF_GLOBAL; function_name->value = 0; fn_pp = ptrs + oidx; ptrs[oidx++] = function_name; } /* The .toc symbol */ { asymbol *toc_symbol; /* The .toc symbol */ toc_symbol = bfd_make_empty_symbol (abfd); toc_symbol->name = make_label (".", "toc"); toc_symbol->section = (asection *)&bfd_und_section; toc_symbol->flags = BSF_GLOBAL; toc_symbol->value = 0; toc_pp = ptrs + oidx; ptrs[oidx++] = toc_symbol; } #endif ptrs[oidx] = 0; for (i = 0; i < NSECS; i++) { sinfo *si = secdata + i; asection *sec = si->sec; arelent *rel; arelent **rpp; switch (i) { case TEXT: if (! exp->data) { si->size = HOW_JTAB_SIZE; si->data = xmalloc (HOW_JTAB_SIZE); memcpy (si->data, HOW_JTAB, HOW_JTAB_SIZE); /* add the reloc into idata$5 */ rel = xmalloc (sizeof (arelent)); rpp = xmalloc (sizeof (arelent *) * 2); rpp[0] = rel; rpp[1] = 0; rel->address = HOW_JTAB_ROFF; rel->addend = 0; if (machine == MPPC) { rel->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_16_GOTOFF); rel->sym_ptr_ptr = iname_pp; } else { rel->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_32); rel->sym_ptr_ptr = secdata[IDATA5].sympp; } sec->orelocation = rpp; sec->reloc_count = 1; } break; case IDATA4: case IDATA5: /* An idata$4 or idata$5 is one word long, and has an rva to idata$6 */ si->data = xmalloc (4); si->size = 4; if (exp->noname) { si->data[0] = exp->ordinal ; si->data[1] = exp->ordinal >> 8; si->data[2] = exp->ordinal >> 16; si->data[3] = 0x80; } else { sec->reloc_count = 1; memset (si->data, 0, si->size); rel = xmalloc (sizeof (arelent)); rpp = xmalloc (sizeof (arelent *) * 2); rpp[0] = rel; rpp[1] = 0; rel->address = 0; rel->addend = 0; rel->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_RVA); rel->sym_ptr_ptr = secdata[IDATA6].sympp; sec->orelocation = rpp; } break; case IDATA6: if (!exp->noname) { /* This used to add 1 to exp->hint. I don't know why it did that, and it does not match what I see in programs compiled with the MS tools. */ int idx = exp->hint; si->size = strlen (xlate (exp->name)) + 3; si->data = xmalloc (si->size); si->data[0] = idx & 0xff; si->data[1] = idx >> 8; strcpy (si->data + 2, xlate (exp->name)); } break; case IDATA7: si->size = 4; si->data =xmalloc(4); memset (si->data, 0, si->size); rel = xmalloc (sizeof (arelent)); rpp = xmalloc (sizeof (arelent *) * 2); rpp[0] = rel; rel->address = 0; rel->addend = 0; rel->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_RVA); rel->sym_ptr_ptr = iname_lab_pp; sec->orelocation = rpp; sec->reloc_count = 1; break; #ifdef DLLTOOL_PPC case PDATA: { /* The .pdata section is 5 words long. */ /* Think of it as: */ /* struct */ /* { */ /* bfd_vma BeginAddress, [0x00] */ /* EndAddress, [0x04] */ /* ExceptionHandler, [0x08] */ /* HandlerData, [0x0c] */ /* PrologEndAddress; [0x10] */ /* }; */ /* So this pdata section setups up this as a glue linkage to a dll routine. There are a number of house keeping things we need to do: 1. In the name of glue trickery, the ADDR32 relocs for 0, 4, and 0x10 are set to point to the same place: "..function_name". 2. There is one more reloc needed in the pdata section. The actual glue instruction to restore the toc on return is saved as the offset in an IMGLUE reloc. So we need a total of four relocs for this section. 3. Lastly, the HandlerData field is set to 0x03, to indicate that this is a glue routine. */ arelent *imglue, *ba_rel, *ea_rel, *pea_rel; /* alignment must be set to 2**2 or you get extra stuff */ bfd_set_section_alignment(abfd, sec, 2); si->size = 4 * 5; si->data =xmalloc(4 * 5); memset (si->data, 0, si->size); rpp = xmalloc (sizeof (arelent *) * 5); rpp[0] = imglue = xmalloc (sizeof (arelent)); rpp[1] = ba_rel = xmalloc (sizeof (arelent)); rpp[2] = ea_rel = xmalloc (sizeof (arelent)); rpp[3] = pea_rel = xmalloc (sizeof (arelent)); rpp[4] = 0; /* stick the toc reload instruction in the glue reloc */ bfd_put_32(abfd, ppc_glue_insn, (char *) &imglue->address); imglue->addend = 0; imglue->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_32_GOTOFF); imglue->sym_ptr_ptr = fn_pp; ba_rel->address = 0; ba_rel->addend = 0; ba_rel->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_32); ba_rel->sym_ptr_ptr = fn_pp; bfd_put_32(abfd, 0x18, si->data + 0x04); ea_rel->address = 4; ea_rel->addend = 0; ea_rel->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_32); ea_rel->sym_ptr_ptr = fn_pp; /* mark it as glue */ bfd_put_32(abfd, 0x03, si->data + 0x0c); /* mark the prolog end address */ bfd_put_32(abfd, 0x0D, si->data + 0x10); pea_rel->address = 0x10; pea_rel->addend = 0; pea_rel->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_32); pea_rel->sym_ptr_ptr = fn_pp; sec->orelocation = rpp; sec->reloc_count = 4; break; } case RDATA: /* Each external function in a PowerPC PE file has a two word descriptor consisting of: 1. The address of the code. 2. The address of the appropriate .toc We use relocs to build this. */ si->size = 8; si->data = xmalloc (8); memset (si->data, 0, si->size); rpp = xmalloc (sizeof (arelent *) * 3); rpp[0] = rel = xmalloc (sizeof (arelent)); rpp[1] = xmalloc (sizeof (arelent)); rpp[2] = 0; rel->address = 0; rel->addend = 0; rel->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_32); rel->sym_ptr_ptr = fn_pp; rel = rpp[1]; rel->address = 4; rel->addend = 0; rel->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_32); rel->sym_ptr_ptr = toc_pp; sec->orelocation = rpp; sec->reloc_count = 2; break; #endif /* DLLTOOL_PPC */ } } { bfd_vma vma = 0; /* Size up all the sections */ for (i = 0; i < NSECS; i++) { sinfo *si = secdata + i; bfd_set_section_size (abfd, si->sec, si->size); bfd_set_section_vma (abfd, si->sec, vma); /* vma += si->size;*/ } } /* Write them out */ for (i = 0; i < NSECS; i++) { sinfo *si = secdata + i; if (i == IDATA5 && no_idata5) continue; if (i == IDATA4 && no_idata4) continue; bfd_set_section_contents (abfd, si->sec, si->data, 0, si->size); } bfd_set_symtab (abfd, ptrs, oidx); bfd_close (abfd); abfd = bfd_openr (outname, HOW_BFD_READ_TARGET); return abfd; } #endif } static bfd * make_head () { FILE *f = fopen (TMP_HEAD_S, FOPEN_WT); if (f == NULL) { fatal (_("failed to open temporary head file: %s"), TMP_HEAD_S); return NULL; } fprintf (f, "%s IMAGE_IMPORT_DESCRIPTOR\n", ASM_C); fprintf (f, "\t.section .idata$2\n"); fprintf(f,"\t%s\t%s\n", ASM_GLOBAL,head_label); fprintf (f, "%s:\n", head_label); fprintf (f, "\t%shname%s\t%sPtr to image import by name list\n", ASM_RVA_BEFORE, ASM_RVA_AFTER, ASM_C); fprintf (f, "\t%sthis should be the timestamp, but NT sometimes\n", ASM_C); fprintf (f, "\t%sdoesn't load DLLs when this is set.\n", ASM_C); fprintf (f, "\t%s\t0\t%s loaded time\n", ASM_LONG, ASM_C); fprintf (f, "\t%s\t0\t%s Forwarder chain\n", ASM_LONG, ASM_C); fprintf (f, "\t%s__%s_iname%s\t%s imported dll's name\n", ASM_RVA_BEFORE, imp_name_lab, ASM_RVA_AFTER, ASM_C); fprintf (f, "\t%sfthunk%s\t%s pointer to firstthunk\n", ASM_RVA_BEFORE, ASM_RVA_AFTER, ASM_C); fprintf (f, "%sStuff for compatibility\n", ASM_C); if (!no_idata5) { fprintf (f, "\t.section\t.idata$5\n"); fprintf (f, "\t%s\t0\n", ASM_LONG); fprintf (f, "fthunk:\n"); } if (!no_idata4) { fprintf (f, "\t.section\t.idata$4\n"); fprintf (f, "\t%s\t0\n", ASM_LONG); fprintf (f, "\t.section .idata$4\n"); fprintf (f, "hname:\n"); } fclose (f); assemble_file (TMP_HEAD_S, TMP_HEAD_O); return bfd_openr (TMP_HEAD_O, HOW_BFD_READ_TARGET); } static bfd * make_tail () { FILE *f = fopen (TMP_TAIL_S, FOPEN_WT); if (f == NULL) { fatal (_("failed to open temporary tail file: %s"), TMP_TAIL_S); return NULL; } if (!no_idata4) { fprintf (f, "\t.section .idata$4\n"); fprintf (f, "\t%s\t0\n", ASM_LONG); } if (!no_idata5) { fprintf (f, "\t.section .idata$5\n"); fprintf (f, "\t%s\t0\n", ASM_LONG); } #ifdef DLLTOOL_PPC /* Normally, we need to see a null descriptor built in idata$3 to act as the terminator for the list. The ideal way, I suppose, would be to mark this section as a comdat type 2 section, so only one would appear in the final .exe (if our linker supported comdat, that is) or cause it to be inserted by something else (say crt0) */ fprintf (f, "\t.section .idata$3\n"); fprintf (f, "\t%s\t0\n", ASM_LONG); fprintf (f, "\t%s\t0\n", ASM_LONG); fprintf (f, "\t%s\t0\n", ASM_LONG); fprintf (f, "\t%s\t0\n", ASM_LONG); fprintf (f, "\t%s\t0\n", ASM_LONG); #endif #ifdef DLLTOOL_PPC /* Other PowerPC NT compilers use idata$6 for the dllname, so I do too. Original, huh? */ fprintf (f, "\t.section .idata$6\n"); #else fprintf (f, "\t.section .idata$7\n"); #endif fprintf (f, "\t%s\t__%s_iname\n", ASM_GLOBAL, imp_name_lab); fprintf (f, "__%s_iname:\t%s\t\"%s\"\n", imp_name_lab, ASM_TEXT, dll_name); fclose (f); assemble_file (TMP_TAIL_S, TMP_TAIL_O); return bfd_openr (TMP_TAIL_O, HOW_BFD_READ_TARGET); } static void gen_lib_file () { int i; export_type *exp; bfd *ar_head; bfd *ar_tail; bfd *outarch; bfd * head = 0; unlink (imp_name); outarch = bfd_openw (imp_name, HOW_BFD_WRITE_TARGET); if (!outarch) /* xgettext:c-format */ fatal (_("Can't open .lib file: %s"), imp_name); /* xgettext:c-format */ inform (_("Creating library file: %s\n"), imp_name); bfd_set_format (outarch, bfd_archive); outarch->has_armap = 1; /* Work out a reasonable size of things to put onto one line. */ ar_head = make_head (); ar_tail = make_tail(); if (ar_head == NULL || ar_tail == NULL) return; for (i = 0; (exp = d_exports_lexically[i]); i++) { bfd *n = make_one_lib_file (exp, i); n->next = head; head = n; } /* Now stick them all into the archive */ ar_head->next = head; ar_tail->next = ar_head; head = ar_tail; if (! bfd_set_archive_head (outarch, head)) bfd_fatal ("bfd_set_archive_head"); if (! bfd_close (outarch)) bfd_fatal (imp_name); while (head != NULL) { bfd *n = head->next; bfd_close (head); head = n; } /* Delete all the temp files */ if (dontdeltemps == 0) { unlink (TMP_HEAD_O); unlink (TMP_HEAD_S); unlink (TMP_TAIL_O); unlink (TMP_TAIL_S); } if (dontdeltemps < 2) { char *name; name = (char *) alloca (sizeof TMP_STUB + 10); for (i = 0, exp = d_exports; exp; i++, exp = exp->next) { sprintf (name, "%s%05d.o", TMP_STUB, i); if (unlink (name) < 0) /* xgettext:c-format */ warn (_("cannot delete %s: %s\n"), name, strerror (errno)); } } inform (_("Created lib file")); } /**********************************************************************/ /* Run through the information gathered from the .o files and the .def file and work out the best stuff */ static int pfunc (a, b) const void *a; const void *b; { export_type *ap = *(export_type **) a; export_type *bp = *(export_type **) b; if (ap->ordinal == bp->ordinal) return 0; /* unset ordinals go to the bottom */ if (ap->ordinal == -1) return 1; if (bp->ordinal == -1) return -1; return (ap->ordinal - bp->ordinal); } static int nfunc (a, b) const void *a; const void *b; { export_type *ap = *(export_type **) a; export_type *bp = *(export_type **) b; return (strcmp (ap->name, bp->name)); } static void remove_null_names (ptr) export_type **ptr; { int src; int dst; for (dst = src = 0; src < d_nfuncs; src++) { if (ptr[src]) { ptr[dst] = ptr[src]; dst++; } } d_nfuncs = dst; } static void dtab (ptr) export_type **ptr; { #ifdef SACDEBUG int i; for (i = 0; i < d_nfuncs; i++) { if (ptr[i]) { printf ("%d %s @ %d %s%s%s\n", i, ptr[i]->name, ptr[i]->ordinal, ptr[i]->noname ? "NONAME " : "", ptr[i]->constant ? "CONSTANT" : "", ptr[i]->data ? "DATA" : ""); } else printf ("empty\n"); } #endif } static void process_duplicates (d_export_vec) export_type **d_export_vec; { int more = 1; int i; while (more) { more = 0; /* Remove duplicates */ qsort (d_export_vec, d_nfuncs, sizeof (export_type *), nfunc); dtab (d_export_vec); for (i = 0; i < d_nfuncs - 1; i++) { if (strcmp (d_export_vec[i]->name, d_export_vec[i + 1]->name) == 0) { export_type *a = d_export_vec[i]; export_type *b = d_export_vec[i + 1]; more = 1; /* xgettext:c-format */ inform (_("Warning, ignoring duplicate EXPORT %s %d,%d\n"), a->name, a->ordinal, b->ordinal); if (a->ordinal != -1 && b->ordinal != -1) /* xgettext:c-format */ fatal (_("Error, duplicate EXPORT with oridinals: %s"), a->name); /* Merge attributes */ b->ordinal = a->ordinal > 0 ? a->ordinal : b->ordinal; b->constant |= a->constant; b->noname |= a->noname; b->data |= a->data; d_export_vec[i] = 0; } dtab (d_export_vec); remove_null_names (d_export_vec); dtab (d_export_vec); } } /* Count the names */ for (i = 0; i < d_nfuncs; i++) { if (!d_export_vec[i]->noname) d_named_nfuncs++; } } static void fill_ordinals (d_export_vec) export_type **d_export_vec; { int lowest = -1; int i; char *ptr; int size = 65536; qsort (d_export_vec, d_nfuncs, sizeof (export_type *), pfunc); /* fill in the unset ordinals with ones from our range */ ptr = (char *) xmalloc (size); memset (ptr, 0, size); /* Mark in our large vector all the numbers that are taken */ for (i = 0; i < d_nfuncs; i++) { if (d_export_vec[i]->ordinal != -1) { ptr[d_export_vec[i]->ordinal] = 1; if (lowest == -1 || d_export_vec[i]->ordinal < lowest) { lowest = d_export_vec[i]->ordinal; } } } /* Start at 1 for compatibility with MS toolchain. */ if (lowest == -1) lowest = 1; /* Now fill in ordinals where the user wants us to choose. */ for (i = 0; i < d_nfuncs; i++) { if (d_export_vec[i]->ordinal == -1) { register int j; /* First try within or after any user supplied range. */ for (j = lowest; j < size; j++) if (ptr[j] == 0) { ptr[j] = 1; d_export_vec[i]->ordinal = j; goto done; } /* Then try before the range. */ for (j = lowest; j >0; j--) if (ptr[j] == 0) { ptr[j] = 1; d_export_vec[i]->ordinal = j; goto done; } done:; } } free (ptr); /* And resort */ qsort (d_export_vec, d_nfuncs, sizeof (export_type *), pfunc); /* Work out the lowest and highest ordinal numbers. */ if (d_nfuncs) { if (d_export_vec[0]) d_low_ord = d_export_vec[0]->ordinal; if (d_export_vec[d_nfuncs-1]) d_high_ord = d_export_vec[d_nfuncs-1]->ordinal; } } static int alphafunc (av,bv) const void *av; const void *bv; { const export_type **a = (const export_type **) av; const export_type **b = (const export_type **) bv; return strcmp ((*a)->name, (*b)->name); } static void mangle_defs () { /* First work out the minimum ordinal chosen */ export_type *exp; int i; int hint = 0; export_type **d_export_vec = (export_type **) xmalloc (sizeof (export_type *) * d_nfuncs); inform (_("Processing definitions")); for (i = 0, exp = d_exports; exp; i++, exp = exp->next) { d_export_vec[i] = exp; } process_duplicates (d_export_vec); fill_ordinals (d_export_vec); /* Put back the list in the new order */ d_exports = 0; for (i = d_nfuncs - 1; i >= 0; i--) { d_export_vec[i]->next = d_exports; d_exports = d_export_vec[i]; } /* Build list in alpha order */ d_exports_lexically = (export_type **) xmalloc (sizeof (export_type *) * (d_nfuncs + 1)); for (i = 0, exp = d_exports; exp; i++, exp = exp->next) { d_exports_lexically[i] = exp; } d_exports_lexically[i] = 0; qsort (d_exports_lexically, i, sizeof (export_type *), alphafunc); /* Fill exp entries with their hint values */ for (i = 0; i < d_nfuncs; i++) { if (!d_exports_lexically[i]->noname || show_allnames) d_exports_lexically[i]->hint = hint++; } inform (_("Processed definitions")); } /**********************************************************************/ static void usage (file, status) FILE *file; int status; { /* xgetext:c-format */ fprintf (file, _("Usage %s \n"), program_name); /* xgetext:c-format */ fprintf (file, _(" -m --machine Create as DLL for . [default: %s]\n"), mname); fprintf (file, _(" possible : arm[_interwork], i386, mcore[-elf][-le], ppc, thumb\n")); fprintf (file, _(" -e --output-exp Generate an export file.\n")); fprintf (file, _(" -l --output-lib Generate an interface library.\n")); fprintf (file, _(" -a --add-indirect Add dll indirects to export file.\n")); fprintf (file, _(" -D --dllname Name of input dll to put into interface lib.\n")); fprintf (file, _(" -d --input-def Name of .def file to be read in.\n")); fprintf (file, _(" -z --output-def Name of .def file to be created.\n")); fprintf (file, _(" --export-all-symbols Export all symbols to .def\n")); fprintf (file, _(" --no-export-all-symbols Only export listed symbols\n")); fprintf (file, _(" --exclude-symbols Don't export \n")); fprintf (file, _(" --no-default-excludes Clear default exclude symbols\n")); fprintf (file, _(" -b --base-file Read linker generated base file.\n")); fprintf (file, _(" -x --no-idata4 Don't generate idata$4 section.\n")); fprintf (file, _(" -c --no-idata5 Don't generate idata$5 section.\n")); fprintf (file, _(" -U --add-underscore Add underscores to symbols in interface library.\n")); fprintf (file, _(" -k --kill-at Kill @ from exported names.\n")); fprintf (file, _(" -A --add-stdcall-alias Add aliases without @.\n")); fprintf (file, _(" -S --as Use for assembler.\n")); fprintf (file, _(" -f --as-flags Pass to the assembler.\n")); fprintf (file, _(" -n --no-delete Keep temp files (repeat for extra preservation).\n")); fprintf (file, _(" -v --verbose Be verbose.\n")); fprintf (file, _(" -V --version Display the program version.\n")); fprintf (file, _(" -h --help Display this information.\n")); #ifdef DLLTOOL_MCORE_ELF fprintf (file, _(" -M --mcore-elf Process mcore-elf object files into .\n")); fprintf (file, _(" -L --linker Use as the linker.\n")); fprintf (file, _(" -F --linker-flags Pass to the linker.\n")); #endif exit (status); } #define OPTION_EXPORT_ALL_SYMS 150 #define OPTION_NO_EXPORT_ALL_SYMS (OPTION_EXPORT_ALL_SYMS + 1) #define OPTION_EXCLUDE_SYMS (OPTION_NO_EXPORT_ALL_SYMS + 1) #define OPTION_NO_DEFAULT_EXCLUDES (OPTION_EXCLUDE_SYMS + 1) static const struct option long_options[] = { {"no-delete", no_argument, NULL, 'n'}, {"dllname", required_argument, NULL, 'D'}, {"no-idata4", no_argument, NULL, 'x'}, {"no-idata5", no_argument, NULL, 'c'}, {"output-exp", required_argument, NULL, 'e'}, {"output-def", required_argument, NULL, 'z'}, {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL_SYMS}, {"no-export-all-symbols", no_argument, NULL, OPTION_NO_EXPORT_ALL_SYMS}, {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMS}, {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES}, {"output-lib", required_argument, NULL, 'l'}, {"def", required_argument, NULL, 'd'}, /* for compatiblity with older versions */ {"input-def", required_argument, NULL, 'd'}, {"add-underscore", no_argument, NULL, 'U'}, {"kill-at", no_argument, NULL, 'k'}, {"add-stdcall-alias", no_argument, NULL, 'A'}, {"verbose", no_argument, NULL, 'v'}, {"version", no_argument, NULL, 'V'}, {"help", no_argument, NULL, 'h'}, {"machine", required_argument, NULL, 'm'}, {"add-indirect", no_argument, NULL, 'a'}, {"base-file", required_argument, NULL, 'b'}, {"as", required_argument, NULL, 'S'}, {"as-flags", required_argument, NULL, 'f'}, {"mcore-elf", required_argument, NULL, 'M'}, {0} }; int main (ac, av) int ac; char **av; { int c; int i; char *firstarg = 0; program_name = av[0]; oav = av; #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) setlocale (LC_MESSAGES, ""); #endif bindtextdomain (PACKAGE, LOCALEDIR); textdomain (PACKAGE); while ((c = getopt_long (ac, av, #ifdef DLLTOOL_MCORE_ELF "m:e:l:aD:d:z:b:xcuUkAS:f:nvVhM:L:F:", #else "m:e:l:aD:d:z:b:xcuUkAS:f:nvVh", #endif long_options, 0)) != EOF) { switch (c) { case OPTION_EXPORT_ALL_SYMS: export_all_symbols = true; break; case OPTION_NO_EXPORT_ALL_SYMS: export_all_symbols = false; break; case OPTION_EXCLUDE_SYMS: add_excludes (optarg); break; case OPTION_NO_DEFAULT_EXCLUDES: do_default_excludes = false; break; case 'x': no_idata4 = 1; break; case 'c': no_idata5 = 1; break; case 'S': as_name = optarg; break; case 'f': as_flags = optarg; break; /* ignored for compatibility */ case 'u': break; case 'a': add_indirect = 1; break; case 'z': output_def = fopen (optarg, FOPEN_WT); break; case 'D': dll_name = optarg; break; case 'l': imp_name = optarg; break; case 'e': exp_name = optarg; break; case 'h': usage (stdout, 0); break; case 'm': mname = optarg; break; case 'v': verbose = 1; break; case 'V': print_version (program_name); break; case 'U': add_underscore = 1; break; case 'k': killat = 1; break; case 'A': add_stdcall_alias = 1; break; case 'd': def_file = optarg; break; case 'n': dontdeltemps++; break; case 'b': base_file = fopen (optarg, FOPEN_RB); if (!base_file) /* xgettext:c-format */ fatal (_("Unable to open base-file: %s"), optarg); break; #ifdef DLLTOOL_MCORE_ELF case 'M': mcore_elf_out_file = optarg; break; case 'L': mcore_elf_linker = optarg; break; case 'F': mcore_elf_linker_flags = optarg; break; #endif default: usage (stderr, 1); break; } } for (i = 0; mtable[i].type; i++) if (strcmp (mtable[i].type, mname) == 0) break; if (!mtable[i].type) /* xgettext:c-format */ fatal (_("Machine '%s' not supported"), mname); machine = i; if (!dll_name && exp_name) { int len = strlen (exp_name) + 5; dll_name = xmalloc (len); strcpy (dll_name, exp_name); strcat (dll_name, ".dll"); } if (as_name == NULL) as_name = deduce_name ("as"); /* Don't use the default exclude list if we're reading only the symbols in the .drectve section. The default excludes are meant to avoid exporting DLL entry point and Cygwin32 impure_ptr. */ if (! export_all_symbols) do_default_excludes = false; if (do_default_excludes) set_default_excludes (); if (def_file) process_def_file (def_file); while (optind < ac) { if (!firstarg) firstarg = av[optind]; scan_obj_file (av[optind]); optind++; } mangle_defs (); if (exp_name) gen_exp_file (); if (imp_name) { /* Make imp_name safe for use as a label. */ char *p; imp_name_lab = xstrdup (imp_name); for (p = imp_name_lab; *p; p++) { if (!isalpha ((unsigned char) *p) && !isdigit ((unsigned char) *p)) *p = '_'; } head_label = make_label("_head_", imp_name_lab); gen_lib_file (); } if (output_def) gen_def_file (); #ifdef DLLTOOL_MCORE_ELF if (mcore_elf_out_file) mcore_elf_gen_out_file (); #endif return 0; } /* Look for the program formed by concatenating PROG_NAME and the string running from PREFIX to END_PREFIX. If the concatenated string contains a '/', try appending EXECUTABLE_SUFFIX if it is appropriate. */ static char * look_for_prog (prog_name, prefix, end_prefix) const char *prog_name; const char *prefix; int end_prefix; { struct stat s; char *cmd; cmd = xmalloc (strlen (prefix) + strlen (prog_name) #ifdef HAVE_EXECUTABLE_SUFFIX + strlen (EXECUTABLE_SUFFIX) #endif + 10); strcpy (cmd, prefix); sprintf (cmd + end_prefix, "%s", prog_name); if (strchr (cmd, '/') != NULL) { int found; found = (stat (cmd, &s) == 0 #ifdef HAVE_EXECUTABLE_SUFFIX || stat (strcat (cmd, EXECUTABLE_SUFFIX), &s) == 0 #endif ); if (! found) { /* xgettext:c-format */ inform (_("Tried file: %s"), cmd); free (cmd); return NULL; } } /* xgettext:c-format */ inform (_("Using file: %s"), cmd); return cmd; } /* Deduce the name of the program we are want to invoke. PROG_NAME is the basic name of the program we want to run, eg "as" or "ld". The catch is that we might want actually run "i386-pe-as" or "ppc-pe-ld". If argv[0] contains the full path, then try to find the program in the same place, with and then without a target-like prefix. Given, argv[0] = /usr/local/bin/i586-cygwin32-dlltool, deduce_name("as") uses the following search order: /usr/local/bin/i586-cygwin32-as /usr/local/bin/as as If there's an EXECUTABLE_SUFFIX, it'll use that as well; for each name, it'll try without and then with EXECUTABLE_SUFFIX. Given, argv[0] = i586-cygwin32-dlltool, it will not even try "as" as the fallback, but rather return i586-cygwin32-as. Oh, and given, argv[0] = dlltool, it'll return "as". Returns a dynamically allocated string. */ static char * deduce_name (prog_name) const char *prog_name; { char *cmd; char *dash, *slash, *cp; dash = NULL; slash = NULL; for (cp = program_name; *cp != '\0'; ++cp) { if (*cp == '-') dash = cp; if ( #if defined(__DJGPP__) || defined (__CYGWIN__) || defined(__WIN32__) *cp == ':' || *cp == '\\' || #endif *cp == '/') { slash = cp; dash = NULL; } } cmd = NULL; if (dash != NULL) { /* First, try looking for a prefixed PROG_NAME in the PROGRAM_NAME directory, with the same prefix as PROGRAM_NAME. */ cmd = look_for_prog (prog_name, program_name, dash - program_name + 1); } if (slash != NULL && cmd == NULL) { /* Next, try looking for a PROG_NAME in the same directory as that of this program. */ cmd = look_for_prog (prog_name, program_name, slash - program_name + 1); } if (cmd == NULL) { /* Just return PROG_NAME as is. */ cmd = xstrdup (prog_name); } return cmd; } #ifdef DLLTOOL_MCORE_ELF typedef struct fname_cache { char * filename; struct fname_cache * next; } fname_cache; static fname_cache fnames; static void mcore_elf_cache_filename (char * filename) { fname_cache * ptr; ptr = & fnames; while (ptr->next != NULL) ptr = ptr->next; ptr->filename = filename; ptr->next = (fname_cache *) malloc (sizeof (fname_cache)); if (ptr->next != NULL) ptr->next->next = NULL; } #define MCORE_ELF_TMP_OBJ "mcoreelf.o" #define MCORE_ELF_TMP_EXP "mcoreelf.exp" #define MCORE_ELF_TMP_LIB "mcoreelf.lib" static void mcore_elf_gen_out_file (void) { fname_cache * ptr; dyn_string_t ds; /* Step one. Run 'ld -r' on the input object files in order to resolve any internal references and to generate a single .exports section. */ ptr = & fnames; ds = dyn_string_new (100); dyn_string_append (ds, "-r "); if (mcore_elf_linker_flags != NULL) dyn_string_append (ds, mcore_elf_linker_flags); while (ptr->next != NULL) { dyn_string_append (ds, ptr->filename); dyn_string_append (ds, " "); ptr = ptr->next; } dyn_string_append (ds, "-o "); dyn_string_append (ds, MCORE_ELF_TMP_OBJ); if (mcore_elf_linker == NULL) mcore_elf_linker = deduce_name ("ld"); run (mcore_elf_linker, ds->s); dyn_string_delete (ds); /* Step two. Create a .exp file and a .lib file from the temporary file. Do this by recursively invoking dlltool....*/ ds = dyn_string_new (100); dyn_string_append (ds, "-S "); dyn_string_append (ds, as_name); dyn_string_append (ds, " -e "); dyn_string_append (ds, MCORE_ELF_TMP_EXP); dyn_string_append (ds, " -l "); dyn_string_append (ds, MCORE_ELF_TMP_LIB); dyn_string_append (ds, " " ); dyn_string_append (ds, MCORE_ELF_TMP_OBJ); if (verbose) dyn_string_append (ds, " -v"); if (dontdeltemps) { dyn_string_append (ds, " -n"); if (dontdeltemps > 1) dyn_string_append (ds, " -n"); } /* XXX - FIME: ought to check/copy other command line options as well. */ run (program_name, ds->s); dyn_string_delete (ds); /* Step four. Feed the .exp and object files to ld -shared to create the dll. */ ds = dyn_string_new (100); dyn_string_append (ds, "-shared "); if (mcore_elf_linker_flags) dyn_string_append (ds, mcore_elf_linker_flags); dyn_string_append (ds, " "); dyn_string_append (ds, MCORE_ELF_TMP_EXP); dyn_string_append (ds, " "); dyn_string_append (ds, MCORE_ELF_TMP_OBJ); dyn_string_append (ds, " -o "); dyn_string_append (ds, mcore_elf_out_file); run (mcore_elf_linker, ds->s); dyn_string_delete (ds); if (dontdeltemps == 0) unlink (MCORE_ELF_TMP_EXP); if (dontdeltemps < 2) unlink (MCORE_ELF_TMP_OBJ); } #endif /* DLLTOOL_MCORE_ELF */