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Re: The same mmap problem in gprolog-1.2.8 and gprolog-1.2.11


From: Daniel Diaz
Subject: Re: The same mmap problem in gprolog-1.2.8 and gprolog-1.2.11
Date: Fri, 29 Mar 2002 19:12:57 +0100

Thank you,

P 1 is an error in configure.in - should be -mcpu=i486 (and not
-mcpu=486)

P 2 is fixed as you said

P 3 has been fixed 2 days ago in the future (pre 1.2.12). This fixes a
severe limitation
    to 64MB for all stacks. Under ix86/linux I can now allocate much
more (on my P4 with
    512Mb of RAM + 512Mb of swap I can allocate up to 900Mb). When I put
1.2.11 could you
    try on your ix86/solaris machine please ?

Thank you again for both your detailed report and for your effort to
understand where the problems came from.


Tam찼s Laufer wrote:
> 
> Dear Mr. Diaz,
> 
> I can find three problems with gprolog on my ix86/solaris 8 with gcc-2.95.3.
> The first is a new problem in version 1.2.11, the second is solved by version
> 1.2.11.
> 
> *************************
> *************************
> About the target machine:
> *************************
> *************************
> bash-2.03# gcc --version
> 2.95.3
> bash-2.03# uname -X
> System = SunOS
> Node = solaris
> Release = 5.8
> KernelID = Generic_108529-11
> Machine = i86pc
> BusType = <unknown>
> Serial = <unknown>
> Users = <unknown>
> OEM# = 0
> Origin# = 1
> NumCPU = 1
> 
> *************************************
> *************************************
> PROBLEM I. concerning gprolog-1.2.11)
> The gcc can't accept the '-march=' switch value given it by the gplc when
> compiling gprolog-1.2.11:
> *************************************
> *************************************
> bash-2.03# ./configure --prefix=/opt/sfw
> checking for gcc... gcc
> checking for C compiler default output... a.out
> checking whether the C compiler works... yes
> checking whether we are cross compiling... no
> checking for executable suffix...
> checking for object suffix... o
> checking whether we are using the GNU C compiler... yes
> checking whether gcc accepts -g... yes
> checking for ranlib... ranlib
> checking whether make sets ${MAKE}... yes
> checking for a BSD compatible install... ./install-sh -c
> checking whether ln -s works... yes
> checking build system type... i386-pc-solaris2.8
> checking host system type... i386-pc-solaris2.8
> checking how to run the C preprocessor... gcc -E
> checking for ANSI C header files... yes
> checking for sys/types.h... yes
> checking for sys/stat.h... yes
> checking for stdlib.h... yes
> checking for string.h... yes
> checking for memory.h... yes
> checking for strings.h... yes
> checking for inttypes.h... yes
> checking for stdint.h... no
> checking for unistd.h... yes
> checking for long... yes
> checking size of long... 4
> checking for sys/ioctl_compat.h... no
> checking for termios.h... yes
> checking for malloc.h... yes
> checking for stdlib.h... (cached) yes
> checking for unistd.h... (cached) yes
> checking for getpagesize... yes
> checking for working mmap... yes
> checking for mallopt... no
> checking for mkstemp... yes
> checking for fgetc... yes
> checking for gcc option to accept ANSI C... none needed
> checking for inline... inline
> use ebp and move -fomit-frame-pointer to CFLAGS_MACHINE
> checking for socket... no
> checking for socket in -lsocket... yes
> checking for gethostbyname... no
> checking for gethostbyname in -lnsl... yes
> DIRECTORIES
> --> Installation:       /opt/sfw/gprolog-1.2.11
> --> Link to binaries:   /opt/sfw/bin
> --> Documentation:      /opt/sfw/gprolog-1.2.11/doc
> --> HTML documentation: /opt/sfw/gprolog-1.2.11/doc/Html
> --> Examples:           /opt/sfw/gprolog-1.2.11
> configure: creating ./config.status
> config.status: creating Makefile
> config.status: creating TopComp/Makefile
> config.status: creating Pl2Wam/Makefile
> config.status: creating Wam2Ma/Makefile
> config.status: creating Ma2Asm/Makefile
> config.status: creating Fd2C/Makefile
> config.status: creating Linedit/Makefile
> config.status: creating W32GUICons/Makefile
> config.status: creating EnginePl/Makefile
> config.status: creating BipsPl/Makefile
> config.status: creating EngineFD/Makefile
> config.status: creating BipsFD/Makefile
> config.status: creating EnginePl/gp_config.h
> config.status: EnginePl/gp_config.h is unchanged
> bash-2.03#
> 
> bash-2.03# gmake
> (cd EnginePl; gmake config)
> gmake[1]: Entering directory
> `/export/home/opt/sfw/internet_download/work/gprolog-1.2.11/src/EnginePl'
> gcc -O3   -o pl_config pl_config.c
> ./pl_config
> 
>         -------------------------------
>         --- GNU PROLOG INSTALLATION ---
>         -------------------------------
> 
> GNU Prolog version: 1.2.11 (Mar 19 2002)
> Operating system  : solaris2.8
> Processor         : i386
> Size of a word    : 32 bits
> C compiler        : gcc
> C flags           : -O3
> C flags machine   : -march=486 -fomit-frame-pointer
> Loader flags      :
> Loader libraries  : -lm -lsocket -lnsl
> Use line editor   : Yes
> Use piped consult : Yes
> Use sockets       : Yes
> Use FD solver     : Yes
> Use fast call     : Yes
> Use machine regs. : Yes
> Used register(s)  : ebx ebp
> 
>         ------------------------------
> 
> (cd ../TopComp; gmake gplc)
> gmake[2]: Entering directory
> `/export/home/opt/sfw/internet_download/work/gprolog-1.2.11/src/TopComp'
> gcc -O3  -o gplc top_comp.c -lm -lsocket -lnsl
> gmake[2]: Leaving directory
> `/export/home/opt/sfw/internet_download/work/gprolog-1.2.11/src/TopComp'
> gmake[1]: Leaving directory
> `/export/home/opt/sfw/internet_download/work/gprolog-1.2.11/src/EnginePl'
> . ./SETVARS;for i in TopComp EnginePl Wam2Ma Ma2Asm Linedit BipsPl Pl2Wam Fd2C
> EngineFD BipsFD;do (cd $i; gmake) || exit 1; done;\
> (cd TopComp; gmake gprolog)
> gmake[1]: Entering directory
> `/export/home/opt/sfw/internet_download/work/gprolog-1.2.11/src/TopComp'
> gcc -O3  -o hexgplc hexfilter.c
> gmake[1]: Leaving directory
> `/export/home/opt/sfw/internet_download/work/gprolog-1.2.11/src/TopComp'
> gmake[1]: Entering directory
> `/export/home/opt/sfw/internet_download/work/gprolog-1.2.11/src/EnginePl'
> gcc -O3   -o cpp_headers cpp_headers.c
> D=`(cd ..;for i in *;do test -d $i && X="$X
> /export/home/opt/sfw/internet_download/work/gprolog-1.2.11/src/$i";done;echo
> $X)`; ./cpp_headers headers.h gprolog.h $D
> gplc -c -C '-O3 ' obj_begin.c
> cc1: bad value (486) for -march= switch
> compilation failed
> gmake[1]: *** [obj_begin.o] Error 1
> gmake[1]: Leaving directory
> `/export/home/opt/sfw/internet_download/work/gprolog-1.2.11/src/EnginePl'
> gmake: *** [all] Error 1
> bash-2.03#
> ******************************************************************************************
> I note: There is no '-march=' problem with the stable version gprolog 1.2.8.
> ******************************************************************************************
> 
> ************************************************************
> ************************************************************
> PROBLEM II.concerning gprolog-1.2.8) mmap/MAP_FIXED problem.
> ************************************************************
> ************************************************************
> Let me omit to supply the large volumened machine output, I beleive I can
> explain the problem.
> I refer to gprolog source files machine.h and machine.c, specifically to the
> function def.
> void M_Allocate_Stacks(void).
> The soalris 8 mmap gives a '0xdzzzzz00' formed  addr  without MAP_FIXED. 
> Because
> this value contains the sign bit=1 this allocation is not acceptable by 
> gprolog.
> Using M_MMAP_HIGH_ADR_ALT with MAP_FIXED is a solution to this PROBLEM.
> This is already solved in gprolog-1.2.11.
> 
> **************************************************************************************
> **************************************************************************************
> PROBLEM III.concerning gprolog-1.2.8 and 1.2.11) mmap addr acceptability test
> problem.
> **************************************************************************************
> **************************************************************************************
> The function void M_Allocate_Stacks(void) in machine.c contains the following
> code fragment:
> .......................
> .......................
> #ifdef M_ix86_win32
>   if (addr == NULL)
> #else
>   if ((long) addr == -1
>       || ((long) addr & (((1L << TAG_SIZE) - 1) << VALUE_SIZE)) != 0)
> #endif
>     {
> #if !defined(M_ix86_win32) && defined(M_MMAP_HIGH_ADR_ALT)
> .......................
> .......................
> The bitmask (((1L << TAG_SIZE) - 1) << VALUE_SIZE) is not appropriate to test
> the clearness of TAG bits in addr. This test fails with a good addr ==
> 0x3dff0000.
> I think it would be correct to test under the mask TAG_MASK.
> 
> Yours sincerely,
> Tamas Laufer
> 
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