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Comment:Updated to search loaded libraries for symbols on Win32 as we do on UNIX
Timelines: family | ancestors | descendants | both | trunk
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SHA1: adeb3bb79bccce379eee6d885a05e17d22cf8136
User & Date: rkeene on 2014-05-04 07:03:23
Other Links: manifest | tags
Context
2014-05-04
07:04
tcc4tcl version 0.3 check-in: df44ccaed5 user: rkeene tags: trunk, 0.3
07:03
Updated to search loaded libraries for symbols on Win32 as we do on UNIX check-in: adeb3bb79b user: rkeene tags: trunk
07:02
Removed spurious information from patch check-in: b3f189ad77 user: rkeene tags: trunk
Changes
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Added build/tcc-patches/0.9.26/tcc-0.9.26-win32useopenlibs.diff version [269482c81f]. 















































































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diff -uNr tcc-0.9.26.orig/tccpe.c tcc-0.9.26-1win32useopenlibs/tccpe.c
--- tcc-0.9.26.orig/tccpe.c	2013-02-15 08:24:00.000000000 -0600
+++ tcc-0.9.26-1win32useopenlibs/tccpe.c	2014-05-04 02:00:45.195490003 -0500
@@ -38,6 +38,9 @@
 # define ADDR3264 DWORD
 #endif
 
+#ifdef TCC_IS_NATIVE
+#include <psapi.h>
+#endif
 #ifdef _WIN32
 void dbg_printf (const char *fmt, ...)
 {
@@ -831,7 +834,26 @@
                     if (dllref) {
                         if ( !dllref->handle )
                             dllref->handle = LoadLibrary(dllref->name);
-                        v = (ADDR3264)GetProcAddress(dllref->handle, name);
+                        if (dllref->handle) {
+                            v = (ADDR3264)GetProcAddress(dllref->handle, name);
+                        }
+                    }
+                    if (!v) {
+                        HANDLE cur_proc = GetCurrentProcess();
+                        HMODULE *modules;
+                        DWORD needed, i;
+
+                        needed = 0;
+                        EnumProcessModules(cur_proc, NULL, 0, &needed);
+                        modules = tcc_malloc(needed);
+                        if (EnumProcessModules(cur_proc, modules, needed, &needed)) {
+                            for (i = 0; i < needed / sizeof(HMODULE); i++) {
+                                v = (ADDR3264)GetProcAddress(modules[i], name);
+                                if (v) {
+                                    break;
+                                }
+                            }
+                        }
                     }
                     if (!v)
                         tcc_error_noabort("undefined symbol '%s'", name);
@@ -1209,9 +1231,34 @@
 
             const char *name = symtab_section->link->data + sym->st_name;
             unsigned type = ELFW(ST_TYPE)(sym->st_info);
-            int imp_sym = pe_find_import(pe->s1, sym);
+            int imp_sym;
             struct import_symbol *is;
 
+            imp_sym = pe_find_import(pe->s1, sym);
+            if (0 == imp_sym) {
+                HANDLE cur_proc = GetCurrentProcess();
+                HMODULE *modules;
+                DWORD needed, i;
+                const char *symname;
+                void *addr;
+
+                symname = pe_export_name(pe->s1, sym);
+
+                needed = 0;
+                EnumProcessModules(cur_proc, NULL, 0, &needed);
+                modules = tcc_malloc(needed);
+                if (EnumProcessModules(cur_proc, modules, needed, &needed)) {
+                    for (i = 0; i < needed / sizeof(HMODULE); i++) {
+                        addr = GetProcAddress(modules[i], symname);
+                        if (addr) {
+                            put_elf_sym( pe->s1->dynsymtab_section, (ADDR3264) addr, sizeof(addr), ELFW(ST_INFO)(STB_GLOBAL, STT_OBJECT), 0, SHN_UNDEF, symname);
+                            imp_sym = pe_find_import(pe->s1, sym);
+                            break;
+                        }
+                    }
+                }
+            }
+
             if (0 == imp_sym)
                 goto not_found;
 








Modified configure.ac
from [77b6918fa2]
to [ed00a008d9].



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+








dnl Define ourselves
AC_INIT(tcc4tcl, @@VERS@@)

dnl Checks for programs.
AC_PROG_CC
AC_PROG_MAKE_SET
AC_PROG_INSTALL
AC_GNU_SOURCE
AC_LANG(C)

dnl Determine system information
DC_CHK_OS_INFO

dnl Determine if a shared or static build is requested
AC_ARG_ENABLE([static], AS_HELP_STRING([--enable-static], [build static library instead of shared library]), [
	if test "$enableval" = "no"; then




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fi

if test "${TCC4TCL_TARGET}" = "shared"; then
	dnl Determine how to make shared objects
	DC_GET_SHOBJFLAGS

	dnl Only export symbols we wish to expose
	DC_SETVERSIONSCRIPT([tcc4tcl.syms], [tcc4tcl.vers])
	DC_FIND_STRIP_AND_REMOVESYMS([tcc4tcl.syms])
	TARGET="tcc4tcl.${SHOBJEXT}"

	AC_CHECK_HEADERS(windows.h)
	AC_CHECK_HEADERS(psapi.h,,, [
#ifdef HAVE_WINDOWS_H
#  include <windows.h>
#endif
])
	TARGET="tcc4tcl.${SHOBJEXT}"

	AC_MSG_CHECKING([for EnumProcessModules in -lpsapi])
	SAVE_LIBS="$LIBS"
	LIBS="-lpsapi $LIBS"
	AC_LINK_IFELSE([AC_LANG_PROGRAM([
#ifdef HAVE_WINDOWS_H
#  include <windows.h>
#endif
#ifdef HAVE_PSAPI_H
#  include <psapi.h>
#endif
], [
	EnumProcessModules(NULL, NULL, 0, NULL);
])], [
	AC_MSG_RESULT([found])
], [
	AC_MSG_RESULT([not found])
	LIBS="$SAVE_LIBS"
])
else
	TARGET="tcc4tcl-static.a"
fi
AC_SUBST(TARGET)
AC_SUBST(TCC4TCL_TARGET)

dnl Find out if we have the functions needed to open shared objects
AC_SEARCH_LIBS(dlopen, dl,, [
        AC_SEARCH_LIBS(shl_load, dld dl)
])
AC_CHECK_FUNCS(dlopen shl_load)

dnl Look for appropriate headers
AC_CHECK_HEADERS(unistd.h stdlib.h string.h strings.h dlfcn.h dl.h)

dnl Perform Tcl Extension required stuff
TCLEXT_INIT

dnl This must be done last since it breaks the compilation
if test "${TCC4TCL_TARGET}" = "shared"; then
	DC_SETVERSIONSCRIPT([tcc4tcl.syms], [tcc4tcl.vers])
	DC_FIND_STRIP_AND_REMOVESYMS([tcc4tcl.syms])
fi

dnl Produce output
AC_OUTPUT(Makefile pkgIndex.tcl tcc4tcl.syms)








Modified tcc4tcl.tcl
from [3b40b22f76]
to [271b665fc7].




︙


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-
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           $handle command $tclcommand $cname
        }
       return
   }
}
proc tcc4tcl::to_dll {code dll {libs {}}} {
    tcc4tcl $::tcc4tcl::dir dll tcc_1
    tcc_1 add_library tcl8.5 
    tcc_1 add_library_path .
    foreach lib $libs {tcc_1 add_library $lib}
    if {$::tcl_platform(platform) eq "windows"} {
        tcc_1 define DLL_EXPORT {__declspec(dllexport)} 
        set f [open $::tcc4tcl::dir/c/dllcrt1.c]
        tcc_1 compile [read $f]
        close $f
        set f [open $::tcc4tcl::dir/c/dllmain.c]




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  append tcc(code) $code \n
}
proc ::tcc4tcl::cc {code} {
  variable tcc
  if {![info exists tcc(cc)]} {
      set tcc(cc) tcc1
      tcc4tcl $::tcc4tcl::dir $tcc(cc)
      $tcc(cc) add_library tcl8.5
      $tcc(cc) add_include_path [file join $::tcc4tcl::dir include]
  }
  Log code:$code
  $tcc(cc) compile $code
}
#----------------------------------------------------------- New DLL API
proc ::tcc4tcl::dll {{name ""}} {
    variable count




︙
















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