http://sourceware.org/bugzilla/show_bug.cgi?id=13682
Bug #: 13682
Summary: delay-load doesn't work for target x86_64-w64-mingw32
Product: binutils
Version: 2.23 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: binutils
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Classification: Unclassified
Generating a delay-load import library using dlltool fails to work for the
x86_64-w64-mingw32 target:
$ cat mylib.def
LIBRARY mylib.dll
EXPORTS
my_func
$ x86_64-w64-mingw32-dlltool --def mylib.def --kill-at --output-delaylib
mylib.dll.a -n
dxeuh.s: Assembler messages:
dxeuh.s:5: Error: invalid instruction suffix for `push'
dxeuh.s:6: Error: invalid instruction suffix for `push'
dxeuh.s:7: Error: invalid instruction suffix for `push'
dxeuh.s:8: Error: invalid instruction suffix for `push'
dxeuh.s:10: Error: invalid instruction suffix for `pop'
dxeuh.s:11: Error: invalid instruction suffix for `pop'
dxeuh.s:12: Error: operand type mismatch for `jmp'
x86_64-w64-mingw32-dlltool: x86_64-w64-mingw32-as exited with status 1
x86_64-w64-mingw32-dlltool: failed to open temporary head file: dxeuh.o: No
such file or directory
$ cat dxeuh.s
# Import trampoline
.section .text
.global __tailMerge_mylib_dll_a
__tailMerge_mylib_dll_a:
pushl %ecx
pushl %edx
pushl %eax
pushl $__DELAY_IMPORT_DESCRIPTOR_mylib_dll_a
call ___delayLoadHelper2@8
popl %edx
popl %ecx
jmp *%eax
# DELAY_IMPORT_DESCRIPTOR
.section .text$2
.global __DELAY_IMPORT_DESCRIPTOR_mylib_dll_a
__DELAY_IMPORT_DESCRIPTOR_mylib_dll_a:
.long 1 # grAttrs
.rva __mylib_dll_a_iname # rvaDLLName
.rva __DLL_HANDLE_mylib_dll_a # rvaHmod
.rva __IAT_mylib_dll_a # rvaIAT
.rva __INT_mylib_dll_a # rvaINT
.long 0 # rvaBoundIAT
.long 0 # rvaUnloadIAT
.long 0 # dwTimeStamp
.section .data
__DLL_HANDLE_mylib_dll_a:
.long 0 # Handle
#Stuff for compatibility
.section .idata$5
.long 0
.long 0
__IAT_mylib_dll_a:
.section .idata$4
.long 0
.section .idata$4
__INT_mylib_dll_a:
.section .idata$2
If the same command is tried using i686-w64-mingw32-dlltool then the import
library is generated without problems.
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