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/* dlltool.c -- tool to generate stuff for PE style DLLs Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 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 3 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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 <name> [ , <base> ] The result is going to be <name>.EXE LIBRARY <name> [ , <base> ] The result is going to be <name>.DLL EXPORTS ( ( ( <name1> [ = <name2> ] ) | ( <name1> = <module-name> . <external-name>)) [ @ <integer> ] [ NONAME ] [CONSTANT] [DATA] [PRIVATE] ) * Declares name1 as an exported symbol from the DLL, with optional ordinal number <integer>. Or declares name1 as an alias (forward) of the function <external-name> in the DLL <module-name>. IMPORTS ( ( <internal-name> = <module-name> . <integer> ) | ( [ <internal-name> = ] <module-name> . <external-name> )) * Declares that <external-name> or the exported function whose ordinal number is <integer> is to be imported from the file <module-name>. If <internal-name> is specified then this is the name that the imported function will be refereed to in the body of the DLL. DESCRIPTION <string> Puts <string> into output .exp file in the .rdata section [STACKSIZE|HEAPSIZE] <number-reserve> [ , <number-commit> ] Generates --stack|--heap <number-reserve>,<number-commit> in the output .drectve section. The linker will see this and act upon it. [CODE|DATA] <attr>+ SECTIONS ( <sectionname> <attr>+ )* <attr> = READ | WRITE | EXECUTE | SHARED Generates --attr <sectionname> <attr> in the output .drectve section. The linker will see this and act upon it. A -export:<name> in a .drectve section in an input .o or .a file to this program is equivalent to a EXPORTS <name> 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). */ #include "sysdep.h" #include "bfd.h" #include "libiberty.h" #include "getopt.h" #include "demangle.h" #include "dyn-string.h" #include "bucomm.h" #include "dlltool.h" #include "safe-ctype.h" #include <time.h> #include <assert.h> #ifdef DLLTOOL_ARM #include "coff/arm.h" #include "coff/internal.h" #endif #ifdef DLLTOOL_DEFAULT_MX86_64 #include "coff/x86_64.h" #endif #ifdef DLLTOOL_DEFAULT_I386 #include "coff/i386.h" #endif #ifndef COFF_PAGE_SIZE #define COFF_PAGE_SIZE ((bfd_vma) 4096) #endif #ifndef PAGE_MASK #define PAGE_MASK ((bfd_vma) (- COFF_PAGE_SIZE)) #endif /* Get current BFD error message. */ #define bfd_get_errmsg() (bfd_errmsg (bfd_get_error ())) /* Forward references. */ static char *look_for_prog (const char *, const char *, int); static char *deduce_name (const char *); #ifdef DLLTOOL_MCORE_ELF static void mcore_elf_cache_filename (const char *); static void mcore_elf_gen_out_file (void); #endif #ifdef HAVE_SYS_WAIT_H #include <sys/wait.h> #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 */ #define show_allnames 0 /* 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. */ char * its_name; /* Optional import table symbol name. */ 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 char *tmp_prefix; static int no_idata4; static int no_idata5; static char *exp_name; static char *imp_name; static char *delayimp_name; static char *identify_imp_name; static bfd_boolean identify_strict; /* Types used to implement a linked list of dllnames associated with the specified import lib. Used by the identify_* code. The head entry is acts as a sentinal node and is always empty (head->dllname is NULL). */ typedef struct dll_name_list_node_t { char * dllname; struct dll_name_list_node_t * next; } dll_name_list_node_type; typedef struct dll_name_list_t { dll_name_list_node_type * head; dll_name_list_node_type * tail; } dll_name_list_type; /* Types used to pass data to iterator functions. */ typedef struct symname_search_data_t { const char * symname; bfd_boolean found; } symname_search_data_type; typedef struct identify_data_t { dll_name_list_type * list; bfd_boolean ms_style_implib; } identify_data_type; static char *head_label; static char *imp_name_lab; static char *dll_name; static int dll_name_set_by_exp_name; static int add_indirect = 0; static int add_underscore = 0; static int add_stdcall_underscore = 0; /* This variable can hold three different values. The value -1 (default) means that default underscoring should be used, zero means that no underscoring should be done, and one indicates that underscoring should be done. */ static int leading_underscore = -1; 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 bfd_boolean export_all_symbols; /* TRUE if we should exclude the symbols in DEFAULT_EXCLUDES when exporting all symbols. */ static bfd_boolean do_default_excludes = TRUE; static bfd_boolean use_nul_prefixed_import_tables = FALSE; /* Default symbols to exclude when exporting all the symbols. */ static const char *default_excludes = "DllMain@12,DllEntryPoint@0,impure_ptr"; /* TRUE if we should add __imp_<SYMBOL> to import libraries for backward compatibility to old Cygwin releases. */ static bfd_boolean create_compat_implib; /* TRUE if we have to write PE+ import libraries. */ static bfd_boolean create_for_pep; static char *def_file; extern char * program_name; static int machine; static int killat; static int add_stdcall_alias; static const char *ext_prefix_alias; static int verbose; static FILE *output_def; static FILE *base_file; #ifdef DLLTOOL_DEFAULT_ARM static const char *mname = "arm"; #endif #ifdef DLLTOOL_DEFAULT_ARM_EPOC static const char *mname = "arm-epoc"; #endif #ifdef DLLTOOL_DEFAULT_ARM_WINCE static const char *mname = "arm-wince"; #endif #ifdef DLLTOOL_DEFAULT_I386 static const char *mname = "i386"; #endif #ifdef DLLTOOL_DEFAULT_MX86_64 static const char *mname = "i386:x86-64"; #endif #ifdef DLLTOOL_DEFAULT_PPC static const char *mname = "ppc"; #endif #ifdef DLLTOOL_DEFAULT_SH static const char *mname = "sh"; #endif #ifdef DLLTOOL_DEFAULT_MIPS static const char *mname = "mips"; #endif #ifdef DLLTOOL_DEFAULT_MCORE static const char * mname = "mcore-le"; #endif #ifdef DLLTOOL_DEFAULT_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 /* What's the right name for this ? */ #define PATHMAX 250 /* External name alias numbering starts here. */ #define PREFIX_ALIAS_BASE 20000 char *tmp_asm_buf; char *tmp_head_s_buf; char *tmp_head_o_buf; char *tmp_tail_s_buf; char *tmp_tail_o_buf; char *tmp_stub_buf; #define TMP_ASM dlltmp (&tmp_asm_buf, "%sc.s") #define TMP_HEAD_S dlltmp (&tmp_head_s_buf, "%sh.s") #define TMP_HEAD_O dlltmp (&tmp_head_o_buf, "%sh.o") #define TMP_TAIL_S dlltmp (&tmp_tail_s_buf, "%st.s") #define TMP_TAIL_O dlltmp (&tmp_tail_o_buf, "%st.o") #define TMP_STUB dlltmp (&tmp_stub_buf, "%ss") /* This bit of assembly does jmp * .... */ static const unsigned char i386_jtab[] = { 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 }; static const unsigned char i386_dljtab[] = { 0xFF, 0x25, 0x00, 0x00, 0x00, 0x00, /* jmp __imp__function */ 0xB8, 0x00, 0x00, 0x00, 0x00, /* mov eax, offset __imp__function */ 0xE9, 0x00, 0x00, 0x00, 0x00 /* jmp __tailMerge__dllname */ }; static const unsigned char i386_x64_dljtab[] = { 0xFF, 0x25, 0x00, 0x00, 0x00, 0x00, /* jmp __imp__function */ 0x48, 0x8d, 0x05, /* leaq rax, (__imp__function) */ 0x00, 0x00, 0x00, 0x00, 0xE9, 0x00, 0x00, 0x00, 0x00 /* jmp __tailMerge__dllname */ }; 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[] = { 0x71, 0x02, /* lrw r1,2 */ 0x81, 0x01, /* ld.w r1,(r1,0) */ 0x00, 0xC1, /* jmp r1 */ 0x12, 0x00, /* nop */ 0x00, 0x00, 0x00, 0x00 /* <address> */ }; static const unsigned char mcore_le_jtab[] = { 0x02, 0x71, /* lrw r1,2 */ 0x01, 0x81, /* ld.w r1,(r1,0) */ 0xC1, 0x00, /* jmp r1 */ 0x00, 0x12, /* nop */ 0x00, 0x00, 0x00, 0x00 /* <address> */ }; /* 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 static const char i386_trampoline[] = "\tpushl %%ecx\n" "\tpushl %%edx\n" "\tpushl %%eax\n" "\tpushl $__DELAY_IMPORT_DESCRIPTOR_%s\n" "\tcall ___delayLoadHelper2@8\n" "\tpopl %%edx\n" "\tpopl %%ecx\n" "\tjmp *%%eax\n"; static const char i386_x64_trampoline[] = "\tpushq %%rcx\n" "\tpushq %%rdx\n" "\tpushq %%r8\n" "\tpushq %%r9\n" "\tsubq $40, %%rsp\n" "\tmovq %%rax, %%rdx\n" "\tleaq __DELAY_IMPORT_DESCRIPTOR_%s(%%rip), %%rcx\n" "\tcall __delayLoadHelper2\n" "\taddq $40, %%rsp\n" "\tpopq %%r9\n" "\tpopq %%r8\n" "\tpopq %%rdx\n" "\tpopq %%rcx\n" "\tjmp *%%rax\n"; 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. */ const unsigned char *how_dljtab; int how_dljtab_size; /* Size of the dljtab entry. */ int how_dljtab_roff1; /* Offset for the ind 32 reloc into idata 5. */ int how_dljtab_roff2; /* Offset for the ind 32 reloc into idata 5. */ int how_dljtab_roff3; /* Offset for the ind 32 reloc into idata 5. */ const char *trampoline; }; 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", "-mapcs-32", "pe-arm-little", bfd_arch_arm, arm_jtab, sizeof (arm_jtab), 8, 0, 0, 0, 0, 0, 0 } , { #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, i386_dljtab, sizeof (i386_dljtab), 2, 7, 12, i386_trampoline } , { #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, 0, 0, 0, 0, 0, 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, 0, 0, 0, 0, 0, 0 } , #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, 0, 0, 0, 0, 0, 0 } , { #define MMCORE_BE 5 "mcore-be", ".byte", ".short", ".long", ".asciz", "//", "lrw r1,[1f]\n\tld.w r1,(r1,0)\n\tjmp r1\n\tnop\n1:.long", ".global", ".space", ".align\t2",".align\t4", "", "pe-mcore-big", bfd_arch_mcore, mcore_be_jtab, sizeof (mcore_be_jtab), 8, 0, 0, 0, 0, 0, 0 } , { #define MMCORE_LE 6 "mcore-le", ".byte", ".short", ".long", ".asciz", "//", "lrw r1,[1f]\n\tld.w r1,(r1,0)\n\tjmp r1\n\tnop\n1:.long", ".global", ".space", ".align\t2",".align\t4", "-EL", "pe-mcore-little", bfd_arch_mcore, mcore_le_jtab, sizeof (mcore_le_jtab), 8, 0, 0, 0, 0, 0, 0 } , { #define MMCORE_ELF 7 "mcore-elf-be", ".byte", ".short", ".long", ".asciz", "//", "lrw r1,[1f]\n\tld.w r1,(r1,0)\n\tjmp r1\n\tnop\n1:.long", ".global", ".space", ".align\t2",".align\t4", "", "elf32-mcore-big", bfd_arch_mcore, mcore_be_jtab, sizeof (mcore_be_jtab), 8, 0, 0, 0, 0, 0, 0 } , { #define MMCORE_ELF_LE 8 "mcore-elf-le", ".byte", ".short", ".long", ".asciz", "//", "lrw r1,[1f]\n\tld.w r1,(r1,0)\n\tjmp r1\n\tnop\n1:.long", ".global", ".space", ".align\t2",".align\t4", "-EL", "elf32-mcore-little", bfd_arch_mcore, mcore_le_jtab, sizeof (mcore_le_jtab), 8, 0, 0, 0, 0, 0, 0 } , { #define MARM_EPOC 9 "arm-epoc", ".byte", ".short", ".long", ".asciz", "@", "ldr\tip,[pc]\n\tldr\tpc,[ip]\n\t.long", ".global", ".space", ".align\t2",".align\t4", "", "epoc-pe-arm-little", bfd_arch_arm, arm_jtab, sizeof (arm_jtab), 8, 0, 0, 0, 0, 0, 0 } , { #define MARM_WINCE 10 "arm-wince", ".byte", ".short", ".long", ".asciz", "@", "ldr\tip,[pc]\n\tldr\tpc,[ip]\n\t.long", ".global", ".space", ".align\t2",".align\t4", "-mapcs-32", "pe-arm-wince-little", bfd_arch_arm, arm_jtab, sizeof (arm_jtab), 8, 0, 0, 0, 0, 0, 0 } , { #define MX86 11 "i386:x86-64", ".byte", ".short", ".long", ".asciz", "#", "jmp *", ".global", ".space", ".align\t2",".align\t4", "", "pe-x86-64",bfd_arch_i386, i386_jtab, sizeof (i386_jtab), 2, i386_x64_dljtab, sizeof (i386_x64_dljtab), 2, 9, 14, i386_x64_trampoline } , { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }; typedef struct dlist { char *text; struct dlist *next; } dlist_type; typedef struct export { const char *name; const char *internal_name; const char *import_name; const char *its_name; int ordinal; int constant; int noname; /* Don't put name in image file. */ int private; /* Don't put reference in import lib. */ int data; int hint; int forward; /* Number of forward label, 0 means no forward. */ 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 (int); static const char *rvabefore (int); static const char *asm_prefix (int, const char *); static void process_def_file (const char *); static void new_directive (char *); static void append_import (const char *, const char *, int, const char *); static void run (const char *, char *); static void scan_drectve_symbols (bfd *); static void scan_filtered_symbols (bfd *, void *, long, unsigned int); static void add_excludes (const char *); static bfd_boolean match_exclude (const char *); static void set_default_excludes (void); static long filter_symbols (bfd *, void *, long, unsigned int); static void scan_all_symbols (bfd *); static void scan_open_obj_file (bfd *); static void scan_obj_file (const char *); static void dump_def_info (FILE *); static int sfunc (const void *, const void *); static void flush_page (FILE *, bfd_vma *, bfd_vma, int); static void gen_def_file (void); static void generate_idata_ofile (FILE *); static void assemble_file (const char *, const char *); static void gen_exp_file (void); static const char *xlate (const char *); static char *make_label (const char *, const char *); static char *make_imp_label (const char *, const char *); static bfd *make_one_lib_file (export_type *, int, int); static bfd *make_head (void); static bfd *make_tail (void); static bfd *make_delay_head (void); static void gen_lib_file (int); static void dll_name_list_append (dll_name_list_type *, bfd_byte *); static int dll_name_list_count (dll_name_list_type *); static void dll_name_list_print (dll_name_list_type *); static void dll_name_list_free_contents (dll_name_list_node_type *); static void dll_name_list_free (dll_name_list_type *); static dll_name_list_type * dll_name_list_create (void); static void identify_dll_for_implib (void); static void identify_search_archive (bfd *, void (*) (bfd *, bfd *, void *), void *); static void identify_search_member (bfd *, bfd *, void *); static bfd_boolean identify_process_section_p (asection *, bfd_boolean); static void identify_search_section (bfd *, asection *, void *); static void identify_member_contains_symname (bfd *, bfd *, void *); static int pfunc (const void *, const void *); static int nfunc (const void *, const void *); static void remove_null_names (export_type **); static void process_duplicates (export_type **); static void fill_ordinals (export_type **); static void mangle_defs (void); static void usage (FILE *, int); static void inform (const char *, ...) ATTRIBUTE_PRINTF_1; static void set_dll_name_from_def (const char *name, char is_dll); static char * prefix_encode (char *start, unsigned code) { static char alpha[26] = "abcdefghijklmnopqrstuvwxyz"; static char buf[32]; char *p; strcpy (buf, start); p = strchr (buf, '\0'); do *p++ = alpha[code % sizeof (alpha)]; while ((code /= sizeof (alpha)) != 0); *p = '\0'; return buf; } static char * dlltmp (char **buf, const char *fmt) { if (!*buf) { *buf = malloc (strlen (tmp_prefix) + 64); sprintf (*buf, fmt, tmp_prefix); } return *buf; } static void inform VPARAMS ((const char * message, ...)) { VA_OPEN (args, message); VA_FIXEDARG (args, const char *, message); if (!verbose) return; report (message, args); VA_CLOSE (args); } static const char * rvaafter (int mach) { switch (mach) { case MARM: case M386: case MX86: case MPPC: case MTHUMB: case MARM_INTERWORK: case MMCORE_BE: case MMCORE_LE: case MMCORE_ELF: case MMCORE_ELF_LE: case MARM_EPOC: case MARM_WINCE: break; default: /* xgettext:c-format */ fatal (_("Internal error: Unknown machine type: %d"), mach); break; } return ""; } static const char * rvabefore (int mach) { switch (mach) { case MARM: case M386: case MX86: case MPPC: case MTHUMB: case MARM_INTERWORK: case MMCORE_BE: case MMCORE_LE: case MMCORE_ELF: case MMCORE_ELF_LE: case MARM_EPOC: case MARM_WINCE: return ".rva\t"; default: /* xgettext:c-format */ fatal (_("Internal error: Unknown machine type: %d"), mach); break; } return ""; } static const char * asm_prefix (int mach, const char *name) { switch (mach) { case MARM: case MPPC: case MTHUMB: case MARM_INTERWORK: case MMCORE_BE: case MMCORE_LE: case MMCORE_ELF: case MMCORE_ELF_LE: case MARM_EPOC: case MARM_WINCE: break; case M386: case MX86: /* Symbol names starting with ? do not have a leading underscore. */ if ((name && *name == '?') || leading_underscore == 0) break; else return "_"; default: /* xgettext:c-format */ fatal (_("Internal error: Unknown machine type: %d"), mach); 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(NAME) asm_prefix (machine, (NAME)) #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 (delay ? mtable[machine].how_dljtab \ : mtable[machine].how_jtab) #define HOW_JTAB_SIZE (delay ? mtable[machine].how_dljtab_size \ : mtable[machine].how_jtab_size) #define HOW_JTAB_ROFF (delay ? mtable[machine].how_dljtab_roff1 \ : mtable[machine].how_jtab_roff) #define HOW_JTAB_ROFF2 (delay ? mtable[machine].how_dljtab_roff2 : 0) #define HOW_JTAB_ROFF3 (delay ? mtable[machine].how_dljtab_roff3 : 0) #define ASM_SWITCHES mtable[machine].how_default_as_switches static char **oav; static void process_def_file (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 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_nforwards = 0; /* Number of forwarded exports. */ static int d_is_dll; static int d_is_exe; int yyerror (const char * err ATTRIBUTE_UNUSED) { /* xgettext:c-format */ non_fatal (_("Syntax error in def file %s:%d"), def_file, linenumber); return 0; } void def_exports (const char *name, const char *internal_name, int ordinal, int noname, int constant, int data, int private, const char *its_name) { struct export *p = (struct export *) xmalloc (sizeof (*p)); p->name = name; p->internal_name = internal_name ? internal_name : name; p->its_name = its_name; p->import_name = name; p->ordinal = ordinal; p->constant = constant; p->noname = noname; p->private = private; p->data = data; p->next = d_exports; d_exports = p; d_nfuncs++; if ((internal_name != NULL) && (strchr (internal_name, '.') != NULL)) p->forward = ++d_nforwards; else p->forward = 0; /* no forward */ } static void set_dll_name_from_def (const char *name, char is_dll) { const char *image_basename = lbasename (name); if (image_basename != name) non_fatal (_("%s: Path components stripped from image name, '%s'."), def_file, name); /* Append the default suffix, if none specified. */ if (strchr (image_basename, '.') == 0) { const char * suffix = is_dll ? ".dll" : ".exe"; dll_name = xmalloc (strlen (image_basename) + strlen (suffix) + 1); sprintf (dll_name, "%s%s", image_basename, suffix); } else dll_name = xstrdup (image_basename); } void def_name (const char *name, int base) { /* xgettext:c-format */ inform (_("NAME: %s base: %x"), name, base); if (d_is_dll) non_fatal (_("Can't have LIBRARY and NAME")); if (dll_name_set_by_exp_name && name && *name != 0) { dll_name = NULL; dll_name_set_by_exp_name = 0; } /* If --dllname not provided, use the one in the DEF file. FIXME: Is this appropriate for executables? */ if (!dll_name) set_dll_name_from_def (name, 0); d_is_exe = 1; } void def_library (const char *name, int base) { /* xgettext:c-format */ inform (_("LIBRARY: %s base: %x"), name, base); if (d_is_exe) non_fatal (_("Can't have LIBRARY and NAME")); if (dll_name_set_by_exp_name && name && *name != 0) { dll_name = NULL; dll_name_set_by_exp_name = 0; } /* If --dllname not provided, use the one in the DEF file. */ if (!dll_name) set_dll_name_from_def (name, 1); d_is_dll = 1; } void def_description (const char *desc) { dlist_type *d = (dlist_type *) xmalloc (sizeof (dlist_type)); d->text = xstrdup (desc); d->next = d_list; d_list = d; } static void new_directive (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 (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 (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 (const char *symbol_name, const char *dllname, int func_ordinal, const char *its_name) { iheadtype **pq; iheadtype *q; for (pq = &import_list; *pq != NULL; pq = &(*pq)->next) { if (strcmp ((*pq)->dllname, dllname) == 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->its_name = (its_name ? xstrdup (its_name) : NULL); q->functail->next = NULL; q->nfuncs++; return; } } q = xmalloc (sizeof (iheadtype)); q->dllname = xstrdup (dllname); q->nfuncs = 1; q->funchead = xmalloc (sizeof (ifunctype)); q->functail = q->funchead; q->next = NULL; q->functail->name = xstrdup (symbol_name); q->functail->its_name = (its_name ? xstrdup (its_name) : NULL); 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: <func_name_in_app> = <dll_name>.<func_name_in_dll> <func_name_in_app> = <dll_name>.<number> <dll_name>.<func_name_in_dll> <dll_name>.<number> 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 <entry> or <ord_val> must be present (i.e., not NULL). */ void def_import (const char *app_name, const char *module, const char *dllext, const char *entry, int ord_val, const char *its_name) { 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, its_name); } void def_version (int major, int minor) { printf (_("VERSION %d.%d\n"), major, minor); } void def_section (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 (int attr) { def_section ("CODE", attr); } void def_data (int attr) { def_section ("DATA", attr); } /**********************************************************************/ static void run (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"), 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 ("%s", 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 */ non_fatal (_("%s exited with status %d"), 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 (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 (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"), 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] == '-' && CONST_STRNEQ (p, "-export:")) { char * name; char * c; flagword flags = BSF_FUNCTION; p += 8; /* Do we have a quoted export? */ if (*p == '"') { p++; name = p; while (p < e && *p != '"') ++p; } else { name = p; while (p < e && *p != ',' && *p != ' ' && *p != '-') p++; } c = xmalloc (p - name + 1); memcpy (c, name, p - name); c[p - name] = 0; /* Advance over trailing quote. */ if (p < e && *p == '"') ++p; if (p < e && *p == ',') /* found type tag. */ { char *tag_start = ++p; while (p < e && *p != ' ' && *p != '-') p++; if (CONST_STRNEQ (tag_start, "data")) 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), 0, NULL); if (add_stdcall_alias && strchr (c, '@')) { int lead_at = (*c == '@') ; char *exported_name = xstrdup (c + lead_at); 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, 0, NULL); } } 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 (bfd *abfd, void *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), 0, NULL); if (add_stdcall_alias && strchr (symbol_name, '@')) { int lead_at = (*symbol_name == '@'); char *exported_name = xstrdup (symbol_name + lead_at); 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, 0, NULL); } } } /* Add a list of symbols to exclude. */ static void add_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); /* Don't add a leading underscore for fastcall symbols. */ if (*exclude_string == '@') sprintf (new_exclude->string, "%s", exclude_string); else sprintf (new_exclude->string, "%s%s", (!leading_underscore ? "" : "_"), exclude_string); new_exclude->next = excludes; excludes = new_exclude; /* xgettext:c-format */ inform (_("Excluding symbol: %s"), exclude_string); } free (local_copy); } /* See if STRING is on the list of symbols to exclude. */ static bfd_boolean match_exclude (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 (bfd *abfd, void *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 void *) 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 (bfd *abfd) { long symcount; void *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 */ non_fatal (_("%s: no symbols"), 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 */ non_fatal (_("%s: no symbols"), 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 (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"), bfd_get_filename (abfd)); } static void scan_obj_file (const char *filename) { bfd * f = bfd_openr (filename, 0); if (!f) /* xgettext:c-format */ fatal (_("Unable to open object file: %s: %s"), filename, bfd_get_errmsg ()); /* 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 (filename); #endif } bfd_close (f); } static void dump_def_info (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%s%s%s\n", ASM_C, i, exp->name, exp->internal_name, exp->ordinal, exp->noname ? "NONAME " : "", exp->private ? "PRIVATE " : "", exp->constant ? "CONSTANT" : "", exp->data ? "DATA" : "", exp->its_name ? " ==" : "", exp->its_name ? exp->its_name : ""); } } /* Generate the .exp file. */ static int sfunc (const void *a, const void *b) { if (*(const bfd_vma *) a == *(const bfd_vma *) b) return 0; return ((*(const bfd_vma *) a > *(const bfd_vma *) b) ? 1 : -1); } static void flush_page (FILE *f, bfd_vma *need, bfd_vma 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, (int) 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++) { bfd_vma needed = need[i]; if (needed) { if (!create_for_pep) { /* Relocation via HIGHLOW. */ needed = ((needed - page_addr) | 0x3000) & 0xffff; } else { /* Relocation via DIR64. */ needed = ((needed - page_addr) | 0xa000) & 0xffff; } } fprintf (f, "\t%s\t0x%lx\n", ASM_SHORT, (long) needed); } /* And padding */ if (on_page & 1) fprintf (f, "\t%s\t0x%x\n", ASM_SHORT, 0 | 0x0000); } static void gen_def_file (void) { 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 (res) { fprintf (output_def,";\t%s\n", res); free (res); } if (strcmp (exp->name, exp->internal_name) == 0) { fprintf (output_def, "\t%s%s%s @ %d%s%s%s%s%s\n", quote, exp->name, quote, exp->ordinal, exp->noname ? " NONAME" : "", exp->private ? "PRIVATE " : "", exp->data ? " DATA" : "", exp->its_name ? " ==" : "", exp->its_name ? exp->its_name : ""); } else { char * quote1 = strchr (exp->internal_name, '.') ? "\"" : ""; /* char *alias = */ fprintf (output_def, "\t%s%s%s = %s%s%s @ %d%s%s%s%s%s\n", quote, exp->name, quote, quote1, exp->internal_name, quote1, exp->ordinal, exp->noname ? " NONAME" : "", exp->private ? "PRIVATE " : "", exp->data ? " DATA" : "", exp->its_name ? " ==" : "", exp->its_name ? exp->its_name : ""); } } 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 (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++) { if (create_for_pep) fprintf (filvar, "\t%sfuncptr%d_%d%s\n%s\t0\n", ASM_RVA_BEFORE, headindex, funcindex, ASM_RVA_AFTER, ASM_LONG); else fprintf (filvar, "\t%sfuncptr%d_%d%s\n", ASM_RVA_BEFORE, headindex, funcindex, ASM_RVA_AFTER); } if (create_for_pep) fprintf (filvar, "\t%s\t0\n\t%s\t0\n", ASM_LONG, ASM_LONG); else 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++) { if (create_for_pep) fprintf (filvar, "\t%sfuncptr%d_%d%s\n%s\t0\n", ASM_RVA_BEFORE, headindex, funcindex, ASM_RVA_AFTER, ASM_LONG); else fprintf (filvar, "\t%sfuncptr%d_%d%s\n", ASM_RVA_BEFORE, headindex, funcindex, ASM_RVA_AFTER); } if (create_for_pep) fprintf (filvar, "\t%s\t0\n\t%s\t0\n", ASM_LONG, ASM_LONG); else 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->its_name ? funcptr->its_name : 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 (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 (void) { FILE *f; int i; export_type *exp; dlist_type *dl; /* xgettext:c-format */ inform (_("Generating export file: %s"), 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, (unsigned 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) { while (i < exp->ordinal) { fprintf(f,"\t%s\t0\n", ASM_LONG); i++; } } if (exp->forward == 0) { if (exp->internal_name[0] == '@') fprintf (f, "\t%s%s%s\t%s %d\n", ASM_RVA_BEFORE, exp->internal_name, ASM_RVA_AFTER, ASM_C, exp->ordinal); else fprintf (f, "\t%s%s%s%s\t%s %d\n", ASM_RVA_BEFORE, ASM_PREFIX (exp->internal_name), exp->internal_name, ASM_RVA_AFTER, ASM_C, exp->ordinal); } else fprintf (f, "\t%sf%d%s\t%s %d\n", ASM_RVA_BEFORE, exp->forward, 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 Ordinal 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->its_name ? exp->its_name : xlate (exp->name))); if (exp->forward != 0) fprintf (f, "f%d: %s \"%s\"\n", exp->forward, ASM_TEXT, exp->internal_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 don't output as ascii because 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. */ if (create_compat_implib) fprintf (f, "\t%s\t__imp_%s\n", ASM_GLOBAL, exp->name); fprintf (f, "\t%s\t_imp_%s%s\n", ASM_GLOBAL, (!leading_underscore ? "" : "_"), exp->name); if (create_compat_implib) fprintf (f, "__imp_%s:\n", exp->name); fprintf (f, "_imp_%s%s:\n", (!leading_underscore ? "" : "_"), 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) { bfd_vma addr; bfd_vma need[COFF_PAGE_SIZE]; bfd_vma page_addr; bfd_size_type numbytes; int num_entries; bfd_vma *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); if (fread (copy, 1, numbytes, base_file) < numbytes) fatal (_("failed to read the number of entries from base file")); num_entries = numbytes / sizeof (bfd_vma); fprintf (f, "\t.section\t.reloc\n"); if (num_entries) { int src; int dst = 0; bfd_vma last = (bfd_vma) -1; qsort (copy, num_entries, sizeof (bfd_vma), sfunc); /* Delete duplicates */ 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 (const char *name) { int lead_at = (*name == '@'); int is_stdcall = (!lead_at && strchr (name, '@') != NULL); if (!lead_at && (add_underscore || (add_stdcall_underscore && is_stdcall))) { char *copy = xmalloc (strlen (name) + 2); copy[0] = '_'; strcpy (copy + 1, name); name = copy; } if (killat) { char *p; name += lead_at; /* PR 9766: Look for the last @ sign in the name. */ p = strrchr (name, '@'); if (p && ISDIGIT (p[1])) *p = 0; } return name; } 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 #define TEXT_SEC_FLAGS \ (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS) #define DATA_SEC_FLAGS (SEC_ALLOC | SEC_LOAD | SEC_DATA) #define BSS_SEC_FLAGS SEC_ALLOC #define INIT_SEC_DATA(id, name, flags, align) \ { id, name, flags, align, NULL, NULL, NULL, 0, NULL } static sinfo secdata[NSECS] = { INIT_SEC_DATA (TEXT, ".text", TEXT_SEC_FLAGS, 2), INIT_SEC_DATA (DATA, ".data", DATA_SEC_FLAGS, 2), INIT_SEC_DATA (BSS, ".bss", BSS_SEC_FLAGS, 2), INIT_SEC_DATA (IDATA7, ".idata$7", SEC_HAS_CONTENTS, 2), INIT_SEC_DATA (IDATA5, ".idata$5", SEC_HAS_CONTENTS, 2), INIT_SEC_DATA (IDATA4, ".idata$4", SEC_HAS_CONTENTS, 2), INIT_SEC_DATA (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 (const char *prefix, const char *name) { int len = strlen (ASM_PREFIX (name)) + strlen (prefix) + strlen (name); char *copy = xmalloc (len + 1); strcpy (copy, ASM_PREFIX (name)); strcat (copy, prefix); strcat (copy, name); return copy; } static char * make_imp_label (const char *prefix, const char *name) { int len; char *copy; if (name[0] == '@') { len = strlen (prefix) + strlen (name); copy = xmalloc (len + 1); strcpy (copy, prefix); strcat (copy, name); } else { len = strlen (ASM_PREFIX (name)) + strlen (prefix) + strlen (name); copy = xmalloc (len + 1); strcpy (copy, prefix); strcat (copy, ASM_PREFIX (name)); strcat (copy, name); } return copy; } static bfd * make_one_lib_file (export_type *exp, int i, int delay) { bfd * abfd; asymbol * exp_label; asymbol * iname = 0; 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]; flagword applicable; char * outname = xmalloc (strlen (TMP_STUB) + 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: %s"), outname, bfd_get_errmsg ()); /* 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 applicable = bfd_applicable_section_flags (abfd); /* 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 & applicable); 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_imp_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. */ if (create_compat_implib) { iname = bfd_make_empty_symbol (abfd); iname->name = make_imp_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_imp_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; if (create_compat_implib) ptrs[oidx++] = iname; ptrs[oidx++] = iname2; iname_lab_pp = ptrs + oidx; ptrs[oidx++] = iname_lab; #ifdef DLLTOOL_PPC /* The symbol referring 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; 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, *rel2 = 0, *rel3 = 0; 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 *) * (delay ? 4 : 2)); rpp[0] = rel; rpp[1] = 0; rel->address = HOW_JTAB_ROFF; rel->addend = 0; if (delay) { rel2 = xmalloc (sizeof (arelent)); rpp[1] = rel2; rel2->address = HOW_JTAB_ROFF2; rel2->addend = 0; rel3 = xmalloc (sizeof (arelent)); rpp[2] = rel3; rel3->address = HOW_JTAB_ROFF3; rel3->addend = 0; rpp[3] = 0; } if (machine == MPPC) { rel->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_16_GOTOFF); rel->sym_ptr_ptr = iname_pp; } else if (machine == MX86) { rel->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_32_PCREL); rel->sym_ptr_ptr = iname_pp; } else { rel->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_32); rel->sym_ptr_ptr = secdata[IDATA5].sympp; } if (delay) { if (machine == MX86) rel2->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_32_PCREL); else rel2->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_32); rel2->sym_ptr_ptr = rel->sym_ptr_ptr; rel3->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_32_PCREL); rel3->sym_ptr_ptr = iname_lab_pp; } sec->orelocation = rpp; sec->reloc_count = delay ? 3 : 1; } break; case IDATA5: if (delay) { si->size = create_for_pep ? 8 : 4; si->data = xmalloc (si->size); sec->reloc_count = 1; memset (si->data, 0, si->size); /* Point after jmp [__imp_...] instruction. */ si->data[0] = 6; rel = xmalloc (sizeof (arelent)); rpp = xmalloc (sizeof (arelent *) * 2); rpp[0] = rel; rpp[1] = 0; rel->address = 0; rel->addend = 0; if (create_for_pep) rel->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_64); else rel->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_32); rel->sym_ptr_ptr = secdata[TEXT].sympp; sec->orelocation = rpp; break; } /* else fall through */ case IDATA4: /* An idata$4 or idata$5 is one word long, and has an rva to idata$6. */ if (create_for_pep) { si->data = xmalloc (8); si->size = 8; if (exp->noname) { si->data[0] = exp->ordinal ; si->data[1] = exp->ordinal >> 8; si->data[2] = exp->ordinal >> 16; si->data[3] = exp->ordinal >> 24; si->data[4] = 0; si->data[5] = 0; si->data[6] = 0; si->data[7] = 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; } } else { 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; if (exp->its_name) si->size = strlen (exp->its_name) + 3; else si->size = strlen (xlate (exp->import_name)) + 3; si->data = xmalloc (si->size); si->data[0] = idx & 0xff; si->data[1] = idx >> 8; if (exp->its_name) strcpy ((char *) si->data + 2, exp->its_name); else strcpy ((char *) si->data + 2, xlate (exp->import_name)); } break; case IDATA7: if (delay) break; 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 (si->size); 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); } } /* 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); if (!abfd) /* xgettext:c-format */ fatal (_("bfd_open failed reopen stub file: %s: %s"), outname, bfd_get_errmsg ()); return abfd; } static bfd * make_head (void) { FILE *f = fopen (TMP_HEAD_S, FOPEN_WT); bfd *abfd; 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\t.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"); if (use_nul_prefixed_import_tables) { if (create_for_pep) fprintf (f,"\t%s\t0\n\t%s\t0\n", ASM_LONG, ASM_LONG); else fprintf (f,"\t%s\t0\n", ASM_LONG); } fprintf (f, "fthunk:\n"); } if (!no_idata4) { fprintf (f, "\t.section\t.idata$4\n"); if (use_nul_prefixed_import_tables) { if (create_for_pep) fprintf (f,"\t%s\t0\n\t%s\t0\n", ASM_LONG, ASM_LONG); else fprintf (f,"\t%s\t0\n", ASM_LONG); } fprintf (f, "hname:\n"); } fclose (f); assemble_file (TMP_HEAD_S, TMP_HEAD_O); abfd = bfd_openr (TMP_HEAD_O, HOW_BFD_READ_TARGET); if (abfd == NULL) /* xgettext:c-format */ fatal (_("failed to open temporary head file: %s: %s"), TMP_HEAD_O, bfd_get_errmsg ()); return abfd; } bfd * make_delay_head (void) { FILE *f = fopen (TMP_HEAD_S, FOPEN_WT); bfd *abfd; if (f == NULL) { fatal (_("failed to open temporary head file: %s"), TMP_HEAD_S); return NULL; } /* Output the __tailMerge__xxx function */ fprintf (f, "%s Import trampoline\n", ASM_C); fprintf (f, "\t.section\t.text\n"); fprintf(f,"\t%s\t%s\n", ASM_GLOBAL, head_label); fprintf (f, "%s:\n", head_label); fprintf (f, mtable[machine].trampoline, imp_name_lab); /* Output the delay import descriptor */ fprintf (f, "\n%s DELAY_IMPORT_DESCRIPTOR\n", ASM_C); fprintf (f, ".section\t.text$2\n"); fprintf (f,"%s __DELAY_IMPORT_DESCRIPTOR_%s\n", ASM_GLOBAL,imp_name_lab); fprintf (f, "__DELAY_IMPORT_DESCRIPTOR_%s:\n", imp_name_lab); fprintf (f, "\t%s 1\t%s grAttrs\n", ASM_LONG, ASM_C); fprintf (f, "\t%s__%s_iname%s\t%s rvaDLLName\n", ASM_RVA_BEFORE, imp_name_lab, ASM_RVA_AFTER, ASM_C); fprintf (f, "\t%s__DLL_HANDLE_%s%s\t%s rvaHmod\n", ASM_RVA_BEFORE, imp_name_lab, ASM_RVA_AFTER, ASM_C); fprintf (f, "\t%s__IAT_%s%s\t%s rvaIAT\n", ASM_RVA_BEFORE, imp_name_lab, ASM_RVA_AFTER, ASM_C); fprintf (f, "\t%s__INT_%s%s\t%s rvaINT\n", ASM_RVA_BEFORE, imp_name_lab, ASM_RVA_AFTER, ASM_C); fprintf (f, "\t%s\t0\t%s rvaBoundIAT\n", ASM_LONG, ASM_C); fprintf (f, "\t%s\t0\t%s rvaUnloadIAT\n", ASM_LONG, ASM_C); fprintf (f, "\t%s\t0\t%s dwTimeStamp\n", ASM_LONG, ASM_C); /* Output the dll_handle */ fprintf (f, "\n.section .data\n"); fprintf (f, "__DLL_HANDLE_%s:\n", imp_name_lab); fprintf (f, "\t%s\t0\t%s Handle\n", ASM_LONG, ASM_C); if (create_for_pep) fprintf (f, "\t%s\t0\n", ASM_LONG); fprintf (f, "\n"); fprintf (f, "%sStuff for compatibility\n", ASM_C); if (!no_idata5) { fprintf (f, "\t.section\t.idata$5\n"); /* NULL terminating list. */ if (create_for_pep) fprintf (f,"\t%s\t0\n\t%s\t0\n", ASM_LONG, ASM_LONG); else fprintf (f,"\t%s\t0\n", ASM_LONG); fprintf (f, "__IAT_%s:\n", imp_name_lab); } if (!no_idata4) { fprintf (f, "\t.section\t.idata$4\n"); fprintf (f, "\t%s\t0\n", ASM_LONG); if (create_for_pep) fprintf (f, "\t%s\t0\n", ASM_LONG); fprintf (f, "\t.section\t.idata$4\n"); fprintf (f, "__INT_%s:\n", imp_name_lab); } fprintf (f, "\t.section\t.idata$2\n"); fclose (f); assemble_file (TMP_HEAD_S, TMP_HEAD_O); abfd = bfd_openr (TMP_HEAD_O, HOW_BFD_READ_TARGET); if (abfd == NULL) /* xgettext:c-format */ fatal (_("failed to open temporary head file: %s: %s"), TMP_HEAD_O, bfd_get_errmsg ()); return abfd; } static bfd * make_tail (void) { FILE *f = fopen (TMP_TAIL_S, FOPEN_WT); bfd *abfd; if (f == NULL) { fatal (_("failed to open temporary tail file: %s"), TMP_TAIL_S); return NULL; } if (!no_idata4) { fprintf (f, "\t.section\t.idata$4\n"); if (create_for_pep) fprintf (f,"\t%s\t0\n\t%s\t0\n", ASM_LONG, ASM_LONG); else fprintf (f,"\t%s\t0\n", ASM_LONG); /* NULL terminating list. */ } if (!no_idata5) { fprintf (f, "\t.section\t.idata$5\n"); if (create_for_pep) fprintf (f,"\t%s\t0\n\t%s\t0\n", ASM_LONG, ASM_LONG); else fprintf (f,"\t%s\t0\n", ASM_LONG); /* NULL terminating list. */ } #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\t.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\t.idata$6\n"); #else fprintf (f, "\t.section\t.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); abfd = bfd_openr (TMP_TAIL_O, HOW_BFD_READ_TARGET); if (abfd == NULL) /* xgettext:c-format */ fatal (_("failed to open temporary tail file: %s: %s"), TMP_TAIL_O, bfd_get_errmsg ()); return abfd; } static void gen_lib_file (int delay) { 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 create .lib file: %s: %s"), imp_name, bfd_get_errmsg ()); /* xgettext:c-format */ inform (_("Creating library file: %s"), imp_name); bfd_set_format (outarch, bfd_archive); outarch->has_armap = 1; outarch->is_thin_archive = 0; /* Work out a reasonable size of things to put onto one line. */ if (delay) { ar_head = make_delay_head (); } else { 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; /* Don't add PRIVATE entries to import lib. */ if (exp->private) continue; n = make_one_lib_file (exp, i, delay); n->archive_next = head; head = n; if (ext_prefix_alias) { export_type alias_exp; assert (i < PREFIX_ALIAS_BASE); alias_exp.name = make_imp_label (ext_prefix_alias, exp->name); alias_exp.internal_name = exp->internal_name; alias_exp.its_name = exp->its_name; alias_exp.import_name = exp->name; alias_exp.ordinal = exp->ordinal; alias_exp.constant = exp->constant; alias_exp.noname = exp->noname; alias_exp.private = exp->private; alias_exp.data = exp->data; alias_exp.hint = exp->hint; alias_exp.forward = exp->forward; alias_exp.next = exp->next; n = make_one_lib_file (&alias_exp, i + PREFIX_ALIAS_BASE, delay); n->archive_next = head; head = n; } } /* Now stick them all into the archive. */ ar_head->archive_next = head; ar_tail->archive_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->archive_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 (strlen (TMP_STUB) + 10); for (i = 0; (exp = d_exports_lexically[i]); i++) { /* Don't delete non-existent stubs for PRIVATE entries. */ if (exp->private) continue; sprintf (name, "%s%05d.o", TMP_STUB, i); if (unlink (name) < 0) /* xgettext:c-format */ non_fatal (_("cannot delete %s: %s"), name, strerror (errno)); if (ext_prefix_alias) { sprintf (name, "%s%05d.o", TMP_STUB, i + PREFIX_ALIAS_BASE); if (unlink (name) < 0) /* xgettext:c-format */ non_fatal (_("cannot delete %s: %s"), name, strerror (errno)); } } } inform (_("Created lib file")); } /* Append a copy of data (cast to char *) to list. */ static void dll_name_list_append (dll_name_list_type * list, bfd_byte * data) { dll_name_list_node_type * entry; /* Error checking. */ if (! list || ! list->tail) return; /* Allocate new node. */ entry = ((dll_name_list_node_type *) xmalloc (sizeof (dll_name_list_node_type))); /* Initialize its values. */ entry->dllname = xstrdup ((char *) data); entry->next = NULL; /* Add to tail, and move tail. */ list->tail->next = entry; list->tail = entry; } /* Count the number of entries in list. */ static int dll_name_list_count (dll_name_list_type * list) { dll_name_list_node_type * p; int count = 0; /* Error checking. */ if (! list || ! list->head) return 0; p = list->head; while (p && p->next) { count++; p = p->next; } return count; } /* Print each entry in list to stdout. */ static void dll_name_list_print (dll_name_list_type * list) { dll_name_list_node_type * p; /* Error checking. */ if (! list || ! list->head) return; p = list->head; while (p && p->next && p->next->dllname && *(p->next->dllname)) { printf ("%s\n", p->next->dllname); p = p->next; } } /* Free all entries in list, and list itself. */ static void dll_name_list_free (dll_name_list_type * list) { if (list) { dll_name_list_free_contents (list->head); list->head = NULL; list->tail = NULL; free (list); } } /* Recursive function to free all nodes entry->next->next... as well as entry itself. */ static void dll_name_list_free_contents (dll_name_list_node_type * entry) { if (entry) { if (entry->next) { dll_name_list_free_contents (entry->next); entry->next = NULL; } if (entry->dllname) { free (entry->dllname); entry->dllname = NULL; } free (entry); } } /* Allocate and initialize a dll_name_list_type object, including its sentinel node. Caller is responsible for calling dll_name_list_free when finished with the list. */ static dll_name_list_type * dll_name_list_create (void) { /* Allocate list. */ dll_name_list_type * list = xmalloc (sizeof (dll_name_list_type)); /* Allocate and initialize sentinel node. */ list->head = xmalloc (sizeof (dll_name_list_node_type)); list->head->dllname = NULL; list->head->next = NULL; /* Bookkeeping for empty list. */ list->tail = list->head; return list; } /* Search the symbol table of the suppled BFD for a symbol whose name matches OBJ (where obj is cast to const char *). If found, set global variable identify_member_contains_symname_result TRUE. It is the caller's responsibility to set the result variable FALSE before iterating with this function. */ static void identify_member_contains_symname (bfd * abfd, bfd * archive_bfd ATTRIBUTE_UNUSED, void * obj) { long storage_needed; asymbol ** symbol_table; long number_of_symbols; long i; symname_search_data_type * search_data = (symname_search_data_type *) obj; /* If we already found the symbol in a different member, short circuit. */ if (search_data->found) return; storage_needed = bfd_get_symtab_upper_bound (abfd); if (storage_needed <= 0) return; symbol_table = xmalloc (storage_needed); number_of_symbols = bfd_canonicalize_symtab (abfd, symbol_table); if (number_of_symbols < 0) { free (symbol_table); return; } for (i = 0; i < number_of_symbols; i++) { if (strncmp (symbol_table[i]->name, search_data->symname, strlen (search_data->symname)) == 0) { search_data->found = TRUE; break; } } free (symbol_table); } /* This is the main implementation for the --identify option. Given the name of an import library in identify_imp_name, first determine if the import library is a GNU binutils-style one (where the DLL name is stored in an .idata$7 (.idata$6 on PPC) section, or if it is a MS-style one (where the DLL name, along with much other data, is stored in the .idata$6 section). We determine the style of import library by searching for the DLL-structure symbol inserted by MS tools: __NULL_IMPORT_DESCRIPTOR. Once we know which section to search, evaluate each section for the appropriate properties that indicate it may contain the name of the associated DLL (this differs depending on the style). Add the contents of all sections which meet the criteria to a linked list of dll names. Finally, print them all to stdout. (If --identify-strict, an error is reported if more than one match was found). */ static void identify_dll_for_implib (void) { bfd * abfd = NULL; int count = 0; identify_data_type identify_data; symname_search_data_type search_data; /* Initialize identify_data. */ identify_data.list = dll_name_list_create (); identify_data.ms_style_implib = FALSE; /* Initialize search_data. */ search_data.symname = "__NULL_IMPORT_DESCRIPTOR"; search_data.found = FALSE; bfd_init (); abfd = bfd_openr (identify_imp_name, 0); if (abfd == NULL) /* xgettext:c-format */ fatal (_("Can't open .lib file: %s: %s"), identify_imp_name, bfd_get_errmsg ()); if (! bfd_check_format (abfd, bfd_archive)) { if (! bfd_close (abfd)) bfd_fatal (identify_imp_name); fatal (_("%s is not a library"), identify_imp_name); } /* Detect if this a Microsoft import library. */ identify_search_archive (abfd, identify_member_contains_symname, (void *)(& search_data)); if (search_data.found) identify_data.ms_style_implib = TRUE; /* Rewind the bfd. */ if (! bfd_close (abfd)) bfd_fatal (identify_imp_name); abfd = bfd_openr (identify_imp_name, 0); if (abfd == NULL) bfd_fatal (identify_imp_name); if (!bfd_check_format (abfd, bfd_archive)) { if (!bfd_close (abfd)) bfd_fatal (identify_imp_name); fatal (_("%s is not a library"), identify_imp_name); } /* Now search for the dll name. */ identify_search_archive (abfd, identify_search_member, (void *)(& identify_data)); if (! bfd_close (abfd)) bfd_fatal (identify_imp_name); count = dll_name_list_count (identify_data.list); if (count > 0) { if (identify_strict && count > 1) { dll_name_list_free (identify_data.list); identify_data.list = NULL; fatal (_("Import library `%s' specifies two or more dlls"), identify_imp_name); } dll_name_list_print (identify_data.list); dll_name_list_free (identify_data.list); identify_data.list = NULL; } else { dll_name_list_free (identify_data.list); identify_data.list = NULL; fatal (_("Unable to determine dll name for `%s' (not an import library?)"), identify_imp_name); } } /* Loop over all members of the archive, applying the supplied function to each member that is a bfd_object. The function will be called as if: func (member_bfd, abfd, user_storage) */ static void identify_search_archive (bfd * abfd, void (* operation) (bfd *, bfd *, void *), void * user_storage) { bfd * arfile = NULL; bfd * last_arfile = NULL; char ** matching; while (1) { arfile = bfd_openr_next_archived_file (abfd, arfile); if (arfile == NULL) { if (bfd_get_error () != bfd_error_no_more_archived_files) bfd_fatal (bfd_get_filename (abfd)); break; } if (bfd_check_format_matches (arfile, bfd_object, &matching)) (*operation) (arfile, abfd, user_storage); else { bfd_nonfatal (bfd_get_filename (arfile)); free (matching); } if (last_arfile != NULL) bfd_close (last_arfile); last_arfile = arfile; } if (last_arfile != NULL) { bfd_close (last_arfile); } } /* Call the identify_search_section() function for each section of this archive member. */ static void identify_search_member (bfd *abfd, bfd *archive_bfd ATTRIBUTE_UNUSED, void *obj) { bfd_map_over_sections (abfd, identify_search_section, obj); } /* This predicate returns true if section->name matches the desired value. By default, this is .idata$7 (.idata$6 on PPC, or if the import library is ms-style). */ static bfd_boolean identify_process_section_p (asection * section, bfd_boolean ms_style_implib) { static const char * SECTION_NAME = #ifdef DLLTOOL_PPC /* dllname is stored in idata$6 on PPC */ ".idata$6"; #else ".idata$7"; #endif static const char * MS_SECTION_NAME = ".idata$6"; const char * section_name = (ms_style_implib ? MS_SECTION_NAME : SECTION_NAME); if (strcmp (section_name, section->name) == 0) return TRUE; return FALSE; } /* If *section has contents and its name is .idata$7 (.data$6 on PPC or if import lib ms-generated) -- and it satisfies several other constraints -- then add the contents of the section to obj->list. */ static void identify_search_section (bfd * abfd, asection * section, void * obj) { bfd_byte *data = 0; bfd_size_type datasize; identify_data_type * identify_data = (identify_data_type *)obj; bfd_boolean ms_style = identify_data->ms_style_implib; if ((section->flags & SEC_HAS_CONTENTS) == 0) return; if (! identify_process_section_p (section, ms_style)) return; /* Binutils import libs seem distinguish the .idata$7 section that contains the DLL name from other .idata$7 sections by the absence of the SEC_RELOC flag. */ if (!ms_style && ((section->flags & SEC_RELOC) == SEC_RELOC)) return; /* MS import libs seem to distinguish the .idata$6 section that contains the DLL name from other .idata$6 sections by the presence of the SEC_DATA flag. */ if (ms_style && ((section->flags & SEC_DATA) == 0)) return; if ((datasize = bfd_section_size (abfd, section)) == 0) return; data = (bfd_byte *) xmalloc (datasize + 1); data[0] = '\0'; bfd_get_section_contents (abfd, section, data, 0, datasize); data[datasize] = '\0'; /* Use a heuristic to determine if data is a dll name. Possible to defeat this if (a) the library has MANY (more than 0x302f) imports, (b) it is an ms-style import library, but (c) it is buggy, in that the SEC_DATA flag is set on the "wrong" sections. This heuristic might also fail to record a valid dll name if the dllname uses a multibyte or unicode character set (is that valid?). This heuristic is based on the fact that symbols names in the chosen section -- as opposed to the dll name -- begin at offset 2 in the data. The first two bytes are a 16bit little-endian count, and start at 0x0000. However, the dll name begins at offset 0 in the data. We assume that the dll name does not contain unprintable characters. */ if (data[0] != '\0' && ISPRINT (data[0]) && ((datasize < 2) || ISPRINT (data[1]))) dll_name_list_append (identify_data->list, data); free (data); } /* Run through the information gathered from the .o files and the .def file and work out the best stuff. */ static int pfunc (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 (const void *a, const void *b) { export_type *ap = *(export_type **) a; export_type *bp = *(export_type **) b; const char *an = ap->name; const char *bn = bp->name; if (ap->its_name) an = ap->its_name; if (bp->its_name) an = bp->its_name; if (killat) { an = (an[0] == '@') ? an + 1 : an; bn = (bn[0] == '@') ? bn + 1 : bn; } return (strcmp (an, bn)); } static void remove_null_names (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 process_duplicates (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); 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"), a->name, a->ordinal, b->ordinal); if (a->ordinal != -1 && b->ordinal != -1) /* xgettext:c-format */ fatal (_("Error, duplicate EXPORT with ordinals: %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; } remove_null_names (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 (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) { 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 void mangle_defs (void) { /* First work out the minimum ordinal chosen. */ export_type *exp; int i; int hint = 0; export_type **d_export_vec = 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 *), nfunc); /* 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 *file, int status) { /* xgetext:c-format */ fprintf (file, _("Usage %s <option(s)> <object-file(s)>\n"), program_name); /* xgetext:c-format */ fprintf (file, _(" -m --machine <machine> Create as DLL for <machine>. [default: %s]\n"), mname); fprintf (file, _(" possible <machine>: arm[_interwork], i386, mcore[-elf]{-le|-be}, ppc, thumb\n")); fprintf (file, _(" -e --output-exp <outname> Generate an export file.\n")); fprintf (file, _(" -l --output-lib <outname> Generate an interface library.\n")); fprintf (file, _(" -y --output-delaylib <outname> Create a delay-import library.\n")); fprintf (file, _(" -a --add-indirect Add dll indirects to export file.\n")); fprintf (file, _(" -D --dllname <name> Name of input dll to put into interface lib.\n")); fprintf (file, _(" -d --input-def <deffile> Name of .def file to be read in.\n")); fprintf (file, _(" -z --output-def <deffile> 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 <list> Don't export <list>\n")); fprintf (file, _(" --no-default-excludes Clear default exclude symbols\n")); fprintf (file, _(" -b --base-file <basefile> 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, _(" --use-nul-prefixed-import-tables Use zero prefixed idata$4 and idata$5.\n")); fprintf (file, _(" -U --add-underscore Add underscores to all symbols in interface library.\n")); fprintf (file, _(" --add-stdcall-underscore Add underscores to stdcall symbols in interface library.\n")); fprintf (file, _(" --no-leading-underscore All symbols shouldn't be prefixed by an underscore.\n")); fprintf (file, _(" --leading-underscore All symbols should be prefixed by an underscore.\n")); fprintf (file, _(" -k --kill-at Kill @<n> from exported names.\n")); fprintf (file, _(" -A --add-stdcall-alias Add aliases without @<n>.\n")); fprintf (file, _(" -p --ext-prefix-alias <prefix> Add aliases with <prefix>.\n")); fprintf (file, _(" -S --as <name> Use <name> for assembler.\n")); fprintf (file, _(" -f --as-flags <flags> Pass <flags> to the assembler.\n")); fprintf (file, _(" -C --compat-implib Create backward compatible import library.\n")); fprintf (file, _(" -n --no-delete Keep temp files (repeat for extra preservation).\n")); fprintf (file, _(" -t --temp-prefix <prefix> Use <prefix> to construct temp file names.\n")); fprintf (file, _(" -I --identify <implib> Report the name of the DLL associated with <implib>.\n")); fprintf (file, _(" --identify-strict Causes --identify to report error when multiple DLLs.\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")); fprintf (file, _(" @<file> Read options from <file>.\n")); #ifdef DLLTOOL_MCORE_ELF fprintf (file, _(" -M --mcore-elf <outname> Process mcore-elf object files into <outname>.\n")); fprintf (file, _(" -L --linker <name> Use <name> as the linker.\n")); fprintf (file, _(" -F --linker-flags <flags> Pass <flags> to the linker.\n")); #endif if (REPORT_BUGS_TO[0] && status == 0) fprintf (file, _("Report bugs to %s\n"), REPORT_BUGS_TO); 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) #define OPTION_ADD_STDCALL_UNDERSCORE (OPTION_NO_DEFAULT_EXCLUDES + 1) #define OPTION_USE_NUL_PREFIXED_IMPORT_TABLES \ (OPTION_ADD_STDCALL_UNDERSCORE + 1) #define OPTION_IDENTIFY_STRICT (OPTION_USE_NUL_PREFIXED_IMPORT_TABLES + 1) #define OPTION_NO_LEADING_UNDERSCORE (OPTION_IDENTIFY_STRICT + 1) #define OPTION_LEADING_UNDERSCORE (OPTION_NO_LEADING_UNDERSCORE + 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'}, {"use-nul-prefixed-import-tables", no_argument, NULL, OPTION_USE_NUL_PREFIXED_IMPORT_TABLES}, {"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 compatibility with older versions */ {"input-def", required_argument, NULL, 'd'}, {"add-underscore", no_argument, NULL, 'U'}, {"add-stdcall-underscore", no_argument, NULL, OPTION_ADD_STDCALL_UNDERSCORE}, {"no-leading-underscore", no_argument, NULL, OPTION_NO_LEADING_UNDERSCORE}, {"leading-underscore", no_argument, NULL, OPTION_LEADING_UNDERSCORE}, {"kill-at", no_argument, NULL, 'k'}, {"add-stdcall-alias", no_argument, NULL, 'A'}, {"ext-prefix-alias", required_argument, NULL, 'p'}, {"identify", required_argument, NULL, 'I'}, {"identify-strict", no_argument, NULL, OPTION_IDENTIFY_STRICT}, {"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'}, {"compat-implib", no_argument, NULL, 'C'}, {"temp-prefix", required_argument, NULL, 't'}, {"output-delaylib", required_argument, NULL, 'y'}, {NULL,0,NULL,0} }; int main (int, char **); int main (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 #if defined (HAVE_SETLOCALE) setlocale (LC_CTYPE, ""); #endif bindtextdomain (PACKAGE, LOCALEDIR); textdomain (PACKAGE); expandargv (&ac, &av); while ((c = getopt_long (ac, av, #ifdef DLLTOOL_MCORE_ELF "m:e:l:aD:d:z:b:xp:cCuUkAS:f:nI:vVHhM:L:F:", #else "m:e:l:y:aD:d:z:b:xp:cCuUkAS:f:nI:vVHh", #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 OPTION_USE_NUL_PREFIXED_IMPORT_TABLES: use_nul_prefixed_import_tables = TRUE; break; case OPTION_ADD_STDCALL_UNDERSCORE: add_stdcall_underscore = 1; break; case OPTION_NO_LEADING_UNDERSCORE: leading_underscore = 0; break; case OPTION_LEADING_UNDERSCORE: leading_underscore = 1; break; case OPTION_IDENTIFY_STRICT: identify_strict = 1; break; case 'x': no_idata4 = 1; break; case 'c': no_idata5 = 1; break; case 'S': as_name = optarg; break; case 't': tmp_prefix = 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 = (char*) lbasename (optarg); if (dll_name != optarg) non_fatal (_("Path components stripped from dllname, '%s'."), optarg); break; case 'l': imp_name = optarg; break; case 'e': exp_name = optarg; break; case 'H': case 'h': usage (stdout, 0); break; case 'm': mname = optarg; break; case 'I': identify_imp_name = 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 'p': ext_prefix_alias = optarg; 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 case 'C': create_compat_implib = 1; break; case 'y': delayimp_name = optarg; break; default: usage (stderr, 1); break; } } if (!tmp_prefix) tmp_prefix = prefix_encode ("d", getpid ()); 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; /* Check if we generated PE+. */ create_for_pep = strcmp (mname, "i386:x86-64") == 0; { /* Check the default underscore */ int u = leading_underscore; /* Underscoring mode. -1 for use default. */ if (u == -1) bfd_get_target_info (mtable[machine].how_bfd_target, NULL, NULL, &u, NULL); if (u != -1) leading_underscore = (u != 0 ? TRUE : FALSE); } if (!dll_name && exp_name) { /* If we are inferring dll_name from exp_name, strip off any path components, without emitting a warning. */ const char* exp_basename = lbasename (exp_name); const int len = strlen (exp_basename) + 5; dll_name = xmalloc (len); strcpy (dll_name, exp_basename); strcat (dll_name, ".dll"); dll_name_set_by_exp_name = 1; } 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 (!ISALNUM (*p)) *p = '_'; } head_label = make_label("_head_", imp_name_lab); gen_lib_file (0); } if (delayimp_name) { /* Make delayimp_name safe for use as a label. */ char *p; if (mtable[machine].how_dljtab == 0) { inform (_("Warning, machine type (%d) not supported for " "delayimport."), machine); } else { killat = 1; imp_name = delayimp_name; imp_name_lab = xstrdup (imp_name); for (p = imp_name_lab; *p; p++) { if (!ISALNUM (*p)) *p = '_'; } head_label = make_label("__tailMerge_", imp_name_lab); gen_lib_file (1); } } if (output_def) gen_def_file (); if (identify_imp_name) { identify_dll_for_implib (); } #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 (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 (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 { const char * filename; struct fname_cache * next; } fname_cache; static fname_cache fnames; static void mcore_elf_cache_filename (const 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_cstr (ds, "-r "); if (mcore_elf_linker_flags != NULL) dyn_string_append_cstr (ds, mcore_elf_linker_flags); while (ptr->next != NULL) { dyn_string_append_cstr (ds, ptr->filename); dyn_string_append_cstr (ds, " "); ptr = ptr->next; } dyn_string_append_cstr (ds, "-o "); dyn_string_append_cstr (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_cstr (ds, "-S "); dyn_string_append_cstr (ds, as_name); dyn_string_append_cstr (ds, " -e "); dyn_string_append_cstr (ds, MCORE_ELF_TMP_EXP); dyn_string_append_cstr (ds, " -l "); dyn_string_append_cstr (ds, MCORE_ELF_TMP_LIB); dyn_string_append_cstr (ds, " " ); dyn_string_append_cstr (ds, MCORE_ELF_TMP_OBJ); if (verbose) dyn_string_append_cstr (ds, " -v"); if (dontdeltemps) { dyn_string_append_cstr (ds, " -n"); if (dontdeltemps > 1) dyn_string_append_cstr (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_cstr (ds, "-shared "); if (mcore_elf_linker_flags) dyn_string_append_cstr (ds, mcore_elf_linker_flags); dyn_string_append_cstr (ds, " "); dyn_string_append_cstr (ds, MCORE_ELF_TMP_EXP); dyn_string_append_cstr (ds, " "); dyn_string_append_cstr (ds, MCORE_ELF_TMP_OBJ); dyn_string_append_cstr (ds, " -o "); dyn_string_append_cstr (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 */
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