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Home » U++ Library support » U++ MT-multithreading and servers » [SOLVED] Unable to compile MT applications (weird assembler error with GCC on Linux i386 arch)
[SOLVED] Unable to compile MT applications (weird assembler error with GCC on Linux i386 arch) [message #42186] Thu, 27 February 2014 01:42 Go to next message
Oblivion is currently offline  Oblivion
Messages: 1238
Registered: August 2007
Senior Contributor
Hello guys,

I was trying to compile the latest TheIDE with MT to test the latest gdb_mi interface, but hit a strange error.
So I checked it with some other apps, and the U++ GuiMT example and always got the same result.

For example, with the GuiMT example I get the following errors, which seem to be the case for all MT apps (some part is in Turkish, but it can be translated as invalid expression before @indntpoff - thread local storage modifier for 32 bit architecture)
----- CtrlLib ( GUI MT GCC DEBUG SHARED DEBUG_FULL BLITZ LINUX POSIX ) (1 / 9)
----- CtrlCore ( GUI MT GCC DEBUG SHARED DEBUG_FULL BLITZ LINUX POSIX ) (2 / 9)
----- PdfDraw ( GUI MT GCC DEBUG SHARED DEBUG_FULL BLITZ LINUX POSIX ) (3 / 9)
----- Draw ( GUI MT GCC DEBUG SHARED DEBUG_FULL BLITZ LINUX POSIX ) (4 / 9)
----- plugin/bmp ( GUI MT GCC DEBUG SHARED DEBUG_FULL BLITZ LINUX POSIX ) (5 / 9)
----- RichText ( GUI MT GCC DEBUG SHARED DEBUG_FULL BLITZ LINUX POSIX ) (6 / 9)
----- Core ( GUI MT GCC DEBUG SHARED DEBUG_FULL BLITZ LINUX POSIX ) (7 / 9)
heaputil.cpp
/tmp/ccNRmbfb.s: Çevirici iletileri:
/tmp/ccNRmbfb.s:813: Hata: ifade sonrasında hatalı `@indntpoff'
/tmp/ccNRmbfb.s:1930: Hata: ifade sonrasında hatalı `@indntpoff'
heap.cpp
/tmp/ccXr1sbP.s: Çevirici iletileri:
/tmp/ccXr1sbP.s:2487: Hata: ifade sonrasında hatalı `@indntpoff'
/tmp/ccXr1sbP.s:2513: Hata: ifade sonrasında hatalı `@indntpoff'
Core: 2 file(s) built in (0:19.01), 9509 msecs / file, duration = 19094 msecs
There were errors. (0:19.58)


So I produced the asm code of the relevant source files (heaputil.cpp and heap.cpp)
In heap.cpp, the code block that produce the error is like this:

LFE6366:
	.size	_ZN3Upp12MemoryShrinkEv, .-_ZN3Upp12MemoryShrinkEv
	.globl	_ZN3Upp16MemoryFreeThreadEv
	.type	_ZN3Upp16MemoryFreeThreadEv, @function
_ZN3Upp16MemoryFreeThreadEv:
.LFB6367:
	.cfi_startproc
	pushl	%ebp
	.cfi_def_cfa_offset 8
	.cfi_offset 5, -8
	movl	%esp, %ebp
	.cfi_def_cfa_register 5
	subl	$24, %esp
	movl	%gs:0, %edx
	movl	_ZN3Upp4heapE@indntpoff, %eax                              <<------- gives error.
	addl	%edx, %eax
	movl	%eax, (%esp)
	call	_ZN3Upp4Heap8ShutdownEv
	leave
	.cfi_restore 5
	.cfi_def_cfa 4, 4
	ret
	.cfi_endproc


.LFE6367:
	.size	_ZN3Upp16MemoryFreeThreadEv, .-_ZN3Upp16MemoryFreeThreadEv
	.globl	_ZN3Upp11MemoryCheckEv
	.type	_ZN3Upp11MemoryCheckEv, @function
_ZN3Upp11MemoryCheckEv:
.LFB6368:
	.cfi_startproc
	pushl	%ebp
	.cfi_def_cfa_offset 8
	.cfi_offset 5, -8
	movl	%esp, %ebp
	.cfi_def_cfa_register 5
	subl	$24, %esp
	movl	%gs:0, %edx
	movl	_ZN3Upp4heapE@indntpoff, %eax                               <<------- gives error.
	addl	%edx, %eax
	movl	%eax, (%esp)
	call	_ZN3Upp4Heap5CheckEv
	leave
	.cfi_restore 5
	.cfi_def_cfa 4, 4
	ret
	.cfi_endproc


Above code is the asm translation of heap.cpp, line 268+:

void MemoryFreeThread()
{
	heap.Shutdown();
}

void MemoryCheck()
{
	heap.Check();
}


In heaputil.cpp, the code block that produce the error is like this:

.LFE6353:
	.size	_ZN3Upp17PeakMemoryProfileEv, .-_ZN3Upp17PeakMemoryProfileEv
	.globl	_ZN3Upp13DoPeakProfileEv
	.type	_ZN3Upp13DoPeakProfileEv, @function
_ZN3Upp13DoPeakProfileEv:
.LFB6354:
	.cfi_startproc
	pushl	%ebp
	.cfi_def_cfa_offset 8
	.cfi_offset 5, -8
	movl	%esp, %ebp
	.cfi_def_cfa_register 5
	subl	$24, %esp
	movl	_ZN3UppL5sPeakE, %eax
	testl	%eax, %eax
	je	.L57
	movl	_ZN3UppL5sPeakE, %eax
	movl	%eax, 4(%esp)
	movl	%gs:0, %edx
	movl	_ZN3Upp4heapE@indntpoff, %eax                                                                 <<------- gives error.
	addl	%edx, %eax
	movl	%eax, (%esp)
	call	_ZN3Upp4Heap4MakeERNS_13MemoryProfileE
.L57:
	leave
	.cfi_restore 5
	.cfi_def_cfa 4, 4
	ret
	.cfi_endproc


....

.LLSDACSE6368:
	.text
	.size	_ZN3Upp4Heap4MakeERNS_13MemoryProfileE, .-_ZN3Upp4Heap4MakeERNS_13MemoryProfileE
	.align 2
	.globl	_ZN3Upp13MemoryProfileC2Ev
	.type	_ZN3Upp13MemoryProfileC2Ev, @function
_ZN3Upp13MemoryProfileC2Ev:
.LFB6370:
	.cfi_startproc
	pushl	%ebp
	.cfi_def_cfa_offset 8
	.cfi_offset 5, -8
	movl	%esp, %ebp
	.cfi_def_cfa_register 5
	subl	$24, %esp
	movl	8(%ebp), %eax
	movl	%eax, 4(%esp)
	movl	%gs:0, %edx
	movl	_ZN3Upp4heapE@indntpoff, %eax                                           <<------- gives error.
	addl	%edx, %eax
	movl	%eax, (%esp)
	call	_ZN3Upp4Heap4MakeERNS_13MemoryProfileE
	leave
	.cfi_restore 5
	.cfi_def_cfa 4, 4
	ret
	.cfi_endproc


Above code is the asm translation of heaputil.cpp, lines 46+ and 302+:

void DoPeakProfile()                                      // Line 46
{
	if(sPeak)
		heap.Make(*sPeak);
}


...

MemoryProfile::MemoryProfile()                        // Line 302
{
	heap.Make(*this);
}



So the main culprit seems to be the "heap", which is defined as extern thread Heap in heapimp.h (see line 175):

extern thread__ Heap heap;



Any ideas on how to solve this problem? Is this a 32 bit i386 arch error only?
I can't compile any MT app with U++ heap. Note that they compile if I use USEMALLOC.

This happens on an ArchLinux with kernel 3.12 and GCC 4.8+ on a 32 bit AMD AthlonXP processor (without SSE2). I don't get this with an AMD 64 or newer Intel machines and I am using U++ nightly (6944).

Regards.

Github page: https://github.com/ismail-yilmaz
Bobcat the terminal emulator: https://github.com/ismail-yilmaz/Bobcat

[Updated on: Sun, 02 March 2014 02:22]

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Re: Unable to compile MT applications (weird assembler error with GCC on Linux i386 arch) [message #42192 is a reply to message #42186] Thu, 27 February 2014 10:16 Go to previous messageGo to next message
mdelfede is currently offline  mdelfede
Messages: 1310
Registered: September 2007
Ultimate Contributor
Weird, in gcc 4.8 - 64 bit it's all ok....

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Re: Unable to compile MT applications (weird assembler error with GCC on Linux i386 arch) [message #42197 is a reply to message #42192] Thu, 27 February 2014 15:20 Go to previous messageGo to next message
Oblivion is currently offline  Oblivion
Messages: 1238
Registered: August 2007
Senior Contributor
It looks like the reason is that "extern thread__ Heap heap" is somehow stays as an undefined reference -- at least the compiler cannot find it in any of the other files.

So it gives those error. But I have no idea why it gives such error in asm files and not the usual way. And I have no idea how to fix it. Any suggestions?

Regards.

Github page: https://github.com/ismail-yilmaz
Bobcat the terminal emulator: https://github.com/ismail-yilmaz/Bobcat

[Updated on: Thu, 27 February 2014 15:52]

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Re: Unable to compile MT applications (weird assembler error with GCC on Linux i386 arch) [message #42208 is a reply to message #42186] Thu, 27 February 2014 19:25 Go to previous messageGo to next message
Oblivion is currently offline  Oblivion
Messages: 1238
Registered: August 2007
Senior Contributor
Hello,

If I add the below declaration to both heap.cpp and heaputil.cpp (since heap is declared externally in heapimp.h), MT apps succesfully compile. 

thread__ Heap heap;


But this time the linker fails because of mulitple definitions.


Regards.

Github page: https://github.com/ismail-yilmaz
Bobcat the terminal emulator: https://github.com/ismail-yilmaz/Bobcat

[Updated on: Thu, 27 February 2014 22:06]

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Re: Unable to compile MT applications (weird assembler error with GCC on Linux i386 arch) [message #42214 is a reply to message #42186] Thu, 27 February 2014 22:06 Go to previous messageGo to next message
Oblivion is currently offline  Oblivion
Messages: 1238
Registered: August 2007
Senior Contributor

Update:

If I move MemoryFreeThread() & MemoryCheck() to sheap.cpp (where a heap variable is explicitly declared), then heap.cpp compiles successfully. 


void MemoryFreeThread()
{
	heap.Shutdown();
}

void MemoryCheck()
{
	heap.Check();
}


But the other file, heaputil.cpp still gives the error, since a heap variable is used in both MemoryProfile() and DoPeakProfile(), and I can't move them to sheap.cpp, since the first is a class constructor and the other contain a local variable.

It seems that the variable "heap" is not "visible" from the both files. Any suggestions?

Regards.

Github page: https://github.com/ismail-yilmaz
Bobcat the terminal emulator: https://github.com/ismail-yilmaz/Bobcat

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[SOLVED] Re: Unable to compile MT applications (weird assembler error with GCC on Linux i386 arch) [message #42252 is a reply to message #42186] Sun, 02 March 2014 01:44 Go to previous message
Oblivion is currently offline  Oblivion
Messages: 1238
Registered: August 2007
Senior Contributor
Hello,

I finally found the solution. The problem was not in the U++, but in the gcc.
As it turned out, it was an architecture + machine specific oddity. Adding the "-fpic" option to the general build options solved the problem. Now MT applications compile and run succesfully.

Regards.

Github page: https://github.com/ismail-yilmaz
Bobcat the terminal emulator: https://github.com/ismail-yilmaz/Bobcat

[Updated on: Sun, 02 March 2014 02:24]

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