I'm inclined to put this work (based on the current gcc from their svn)
in our repository.
Upgrading to 4.4.0 once it's out shouldn't be hard.
Does anyone have ideas (objections or hurrays) about that ?
Danny
On Mon, 2009-02-02 at 22:32 +0100, Vincent R. wrote:
> On Mon, 02 Feb 2009 16:56:17 +0100, Danny Backx <danny.ba...@scarlet.be>
> wrote:
> > I'm not making any promises, as I said I am a bit short on time right
> > now.
> >
> > But what are the things we want ?
> > - gcc 4.4.x -> is it stable enough yet ?
> > - binutils 2.19 ?
> >
> > Danny
> >
> Actually my trainee and I need to work on gcc trunk if we want to have a
> chance to submit patch
> one day about seh implementation. Things are moving fast and I think it's
> good to have someone
> regularly working with gcc trunk. gcc-4.4 is pretty stable and will be
> release soon.
> Actually I have solved all my issues with mingw and now I am using a static
> crt(no more mingwxx.dll)
> (like mingw-w64) but unfortunately I still have an issue when working with
> Dlls.
>
>
> Let's say I have a simple dll (testDll.c) that exports a single function
> and
> an executable(testDllexe.c) that calls this exported function :
>
> testDll.c:
> -----------
>
> #include <windows.h>
>
> #include <commctrl.h>
>
> #include "testDll_API.h"
>
>
>
>
> static char big_buf[0x10000] = { '1' };
>
>
>
> TESTDLL_API
>
> int getDLLValue( void )
>
> {
>
> Sleep (1);
>
>
>
> // function below are only here so that
>
> // linker add them in import section
>
> // to compare with mingw32ce
>
> TerminateProcess(0,0);
>
> _fcloseall();
>
> fflush(NULL);
>
> free(0);
>
> malloc(0);
>
> realloc(0,0);
>
> LocalFree(0);
>
>
>
> return 1;
>
> }
>
>
>
> //BOOL APIENTRY _DllMainCRTStartup( HANDLE hModule,
>
> BOOL DllMain( HANDLE hModule,
>
> DWORD ul_reason_for_call,
>
> LPVOID lpReserved )
>
> {
>
> return TRUE;
>
> }
> ----------------------------
>
> arm-mingw32ce-gcc -DTESTDLL_EXPORTS testDll.c -o testDll.o -c
> arm-mingw32ce-gcc -shared testDll.o -o testDll.dll -Wl,--strip-debug
> -Wl,--major-os-version,4 -Wl,--minor-os-version,20
> -Wl,--major-subsystem-version,4 -Wl,--minor-subsystem-version,20
> -Wl,--major-image-version,0 -Wl,--stack,0x10000
>
> When I compile with cegcc eveyrhing's fine but when I try with cegcc-4.4,
> dll is invalid.
>
> So first I had a look at generated asm and here is the differences :
>
> --- testDll-4.1.s 2009-02-02 20:11:08.000000000 +0100
> +++ testDll-4.4.s 2009-02-02 20:10:23.000000000 +0100
> @@ -1,18 +1,18 @@
> .file "testDll.c"
> .data
> + .align 4
> big_buf:
> .byte 49
> .space 65535
> .text
> - .align 0
> + .align 4
> .global getDLLValue
> .def getDLLValue; .scl 2; .type 32; .endef
> getDLLValue:
> @ args = 0, pretend = 0, frame = 0
> @ frame_needed = 1, uses_anonymous_args = 0
> - mov ip, sp
> - stmfd sp!, {fp, ip, lr, pc}
> - sub fp, ip, #4
> + stmfd sp!, {fp, lr}
> + add fp, sp, #4
> mov r0, #1
> bl Sleep
> mov r0, #0
> @@ -32,31 +32,32 @@
> bl LocalFree
> mov r3, #1
> mov r0, r3
> - ldmfd sp, {fp, sp, pc}
> - .align 0
> + ldmfd sp!, {fp, pc}
> + .align 4
> .global DllMain
> .def DllMain; .scl 2; .type 32; .endef
> DllMain:
> @ args = 0, pretend = 0, frame = 12
> @ frame_needed = 1, uses_anonymous_args = 0
> - mov ip, sp
> - stmfd sp!, {fp, ip, lr, pc}
> - sub fp, ip, #4
> + @ link register save eliminated.
> + str fp, [sp, #-4]!
> + add fp, sp, #0
> sub sp, sp, #12
> - str r0, [fp, #-16]
> - str r1, [fp, #-20]
> - str r2, [fp, #-24]
> + str r0, [fp, #-4]
> + str r1, [fp, #-8]
> + str r2, [fp, #-12]
> mov r3, #1
> mov r0, r3
> - sub sp, fp, #12
> - ldmfd sp, {fp, sp, pc}
> - .def LocalFree; .scl 2; .type 32; .endef
> - .def realloc; .scl 2; .type 32; .endef
> - .def malloc; .scl 2; .type 32; .endef
> - .def free; .scl 2; .type 32; .endef
> - .def fflush; .scl 2; .type 32; .endef
> - .def _fcloseall; .scl 2; .type 32; .endef
> - .def TerminateProcess; .scl 2; .type 32; .endef
> + add sp, fp, #0
> + ldmfd sp!, {fp}
> + mov pc, lr
> .def Sleep; .scl 2; .type 32; .endef
> + .def TerminateProcess; .scl 2; .type 32; .endef
> + .def _fcloseall; .scl 2; .type 32; .endef
> + .def fflush; .scl 2; .type 32; .endef
> + .def free; .scl 2; .type 32; .endef
> + .def malloc; .scl 2; .type 32; .endef
> + .def realloc; .scl 2; .type 32; .endef
> + .def LocalFree; .scl 2; .type 32; .endef
> .section .drectve
> .ascii " -export:getDLLValue"
>
> First we can see that with 4.1 .align directive is 0 while with 4.4 it's 4,
> and for now
> I don't know if it's normal or not but anyway I dont' think this is the
> reason of the problem.
> I tried to compile testDll.c with cegcc-4.4 and do the final link with cecc
> and Dll seems ok.
> Something is wrong with -shared ...
>
> PS : I have also updated patch.
>
>
>
>
>
>
>
--
Danny Backx ; danny.backx - at - scarlet.be ; http://danny.backx.info
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