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| 2 |
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| 3 | R e l e a s e N o t e s G C C f o r O S / 2
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| 4 | +----------------------------------------------------+
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| 5 |
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| 6 |
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| 7 | (C)'2003-2004 InnoTek Systemberatung GmbH
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| 8 | http://www.innotek.de
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| 9 |
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| 10 |
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| 11 | v3.2.2 Beta 4:
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| 12 | --------------
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| 13 |
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| 14 | New features and fixes:
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| 15 |
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| 16 | o Workaround for DosSetFileLocksL() on non JFS volumes.
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| 17 |
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| 18 | o Fixed a bad record length problem in emxomf.
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| 19 |
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| 20 | o Made waitpid() respect the WNOHANG flag.
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| 21 |
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| 22 | o Added some deadlock checking/termination checks to semphores.
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| 23 |
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| 24 | o Changed the glob() and globfree() implemenation with a port of
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| 25 | the FreeBSD 5.1 implemenation.
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| 26 |
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| 27 | o Added macros to os2emx.h for preserving FPU control word and
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| 28 | applied these to certing read and write operations in LIBC.
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| 29 |
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| 30 | o Workaround for bad FIL_STANDARDL buffer handling in os2krnl.
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| 31 |
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| 32 | o Changed so_ioctl() to os2_ioctl() to match toolkit better.
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| 33 |
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| 34 | o Filehandle rewrite. Files, pipes and sockets now share the same
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| 35 | handle space.
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| 36 |
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| 37 | o Increased default stream buffer size to 2 pages.
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| 38 |
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| 39 | o Added some missing #defines to ulsitem.h
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| 40 |
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| 41 | o Created nerrno.h for toolkit compatability.
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| 42 |
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| 43 | o Changed time_t to be signed as in BSD & linux.
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| 44 | (Negative values means date/time before epoc.)
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| 45 |
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| 46 | o Changed to FreeBSD implementation of difftime()
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| 47 |
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| 48 | o Added time related _r functions:
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| 49 |
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| 50 |
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| 51 | v3.2.2 Beta 3 Fix 1 (private build):
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| 52 | ------------------------------------
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| 53 |
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| 54 | Fixes to LIBC:
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| 55 |
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| 56 | o Crash if calloc was called before main().
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| 57 |
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| 58 | o TZ parsing of timezones such as PST8EDT.
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| 59 |
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| 60 | o sigsetjmp() and siglongjmp() visibility.
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| 61 |
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| 62 |
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| 63 | v3.2.2 Beta 3:
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| 64 | --------------
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| 65 |
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| 66 | A few new features and fixes.
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| 67 |
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| 68 | o Fixed a bunch of debug info problems.
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| 69 |
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| 70 | o Added large file support.
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| 71 |
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| 72 | o Enabled high memory support for LIBC. Two new options to GCC: -Zhigh-mem
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| 73 | and -Zhigh-low. If the program is to be enabled for high memory use, specify
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| 74 | -Zhigh-mem when linking.
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| 75 |
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| 76 | Note that socket is not high memory enabled yet.
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| 77 |
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| 78 | o Made LIBC preserve the FS selector.
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| 79 |
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| 80 | o Added random() and *rand48() from BSD.
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| 81 |
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| 82 | o Fixed crash with link386 and unresolved symbols.
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| 83 |
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| 84 |
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| 85 | v3.2.2 Beta 2:
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| 86 | --------------
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| 87 |
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| 88 | A few bugfixes and a some new features (as usual).
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| 89 |
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| 90 | o Added file locking support to LIBC.
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| 91 |
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| 92 | o Fixed _System and _Optlink bugs and made _Optlink support floating
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| 93 | point argument passing in registers.
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| 94 |
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| 95 | o Header updates related to limits and file locking primarily.
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| 96 |
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| 97 | o Timezone fixes.
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| 98 |
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| 99 | o Fixed some CRT init trouble in regards to getenv and putenv.
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| 100 |
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| 101 | o And some other minor stuff..
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| 102 |
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| 103 |
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| 104 | v3.2.2 Beta 1:
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| 105 | --------------
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| 106 |
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| 107 | A few bugfixes and a some new features.
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| 108 |
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| 109 | o Locale support in libc.
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| 110 |
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| 111 | o Implemented a different approach to OMF and weak symbols. This new hack
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| 112 | performs pre-linking before invoking the OMF linker generating new .def
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| 113 | files if needed and an extra object file with aliases to resolve the weak
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| 114 | symbols correctly.
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| 115 | The old approach will be used used when GCC_WEAKSYMS is present in the
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| 116 | environment.
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| 117 |
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| 118 | Please note that due to a bug in BFD, weak symbols don't work 100%
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| 119 | correctly. This will be addressed as soon as we have performed the switch
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| 120 | to a more recent version of binutils.
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| 121 |
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| 122 | o A couple of new functions in libc, and a few corrections to existing
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| 123 | in respect to namespaces.
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| 124 |
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| 125 | o Addressed issues with calling conventions. We now detect incompatible
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| 126 | calling conventions, emitting warnings and errors where appropriate.
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| 127 |
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| 128 | o _Optlink is much better, but there are still some issues left. Passing
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| 129 | prototyped floating point parameters to _Optlink doesn't work. Mixing
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| 130 | of parameters which go into registers (eax, edx, ecx) and parameters
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| 131 | which don't - void foo(int eax, struct sss s, int edx) - doesn't work.
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| 132 | All these issues are being addressed and are expected to be fixed in
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| 133 | the next build.
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| 134 |
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| 135 | o Changed GCC to link with shared libc by default. This means that in
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| 136 | order to link with the static libc one has to specify -static.
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| 137 | It also means that -Zmtd or -Zcrtdll are no longer required for linking
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| 138 | with shared libc and can be removed from all makescripts.
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| 139 |
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| 140 | o Changed EMXOMFLD defaults to ilink from Visual Age for C++ v3.6.5 or
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| 141 | later (preferably later). The emxomfld usage output will instruct you
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| 142 | on how to use older linkers. For VAC308 and VAC365 linkers /dbgpack
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| 143 | is specified if debuginfo is to be generated.
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| 144 | Emxomf checks for EMXOMFLD_TYPE=link386 when choosing debug info level.
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| 145 |
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| 146 | o Shipping three extra libc dlls:
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| 147 | libc02.dbg: Unstripped version of libc02.dll. This is identical
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| 148 | except from the presense of debug info.
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| 149 | libc02.prf: Linked together from profiled enabled libraries
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| 150 | using kProfiler.
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| 151 | libc02.elh: Standard libc but linked with an external eletrical
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| 152 | fence heap from kLibDbg.
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| 153 | These libc02.* dlls can be used instead of libc02.dll. kLibDbg and
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| 154 | kProfiler is available in separate zip files at same location as the
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| 155 | rest of the Innotek GCC suite. However these external tools are
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| 156 | provided as is. (I might actually not find time to put them out yet.)
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| 157 |
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| 158 | o Distribution is splitted into several zips:
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| 159 | -core.zip: All you really need.
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| 160 | -dbg.zip: Map files, unstripped tools and libs, and libc02.elh.
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| 161 | -prf.zip: Profiling libraries and libc02.prf.
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| 162 | libc.zip: The runtime libraries. (included in core.)
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| 163 | The big zip is everything.
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| 164 |
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| 165 | v3.2.2 Alpha 3:
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| 166 | ---------------
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| 167 |
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| 168 | Primarily bugfixes.
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| 169 |
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| 170 | o Changed code generator for floating point truncations (double to int
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| 171 | casts and such) so PM can freely mess up the fpu status.
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| 172 |
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| 173 | o We were using the wrong float.h in two sense. We're now using the
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| 174 | correct one which includes all the PC defines and prototypes.
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| 175 |
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| 176 | o Fixed a few issues with error defines and tcpip.
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| 177 | Note that some of the error defines have changed value in the process
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| 178 | so we could become compatible with the tcpip stack and FreeBSD.
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| 179 |
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| 180 | o Corrected bugs in a number of headers.
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| 181 |
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| 182 | o Added more OS/2 prototypes and imports. There is still work left on
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| 183 | the header part,
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| 184 |
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| 185 | o Optimized emxomf debug info conversion.
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| 186 |
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| 187 | o Wrapped bsdselect for BSD 4.4 header mode to implement bsdselect().
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| 188 |
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| 189 | o .... what did we forget...
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| 190 |
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| 191 |
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| 192 | v3.2.2 Alpha 2:
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| 193 | ---------------
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| 194 |
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| 195 | A few bugfixes and a couple of new features.
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| 196 |
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| 197 | o The TCP/IP headers and libraries scheme have been changed.
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| 198 | The default is the current OS/2 tcpip toolkit (BSD 4.4 based).
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| 199 | To target the older OS/2 tcpip stack (BSD 4.3 based) you must
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| 200 | define TCPV40HDRS before including any TCP/IP headers and make
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| 201 | sure usr/lib/tcpipv4 is searched before usr/lib (this is to get
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| 202 | the right libsocket). It is recommended to use the -D compiler
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| 203 | option for the define and either the LIBRARY_PATH or the -L
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| 204 | compiler/linker option for the library.
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| 205 |
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| 206 | o There are a couple of new and updated based on FreeBSD 5.1.
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| 207 | sys\stdint.h and inttypes.h (and a few internal once) are new.
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| 208 | sys\types.h and unistd.h are the ones most heavily updated.
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| 209 | We're working on getting the headers and libc in a better shape
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| 210 | standardwise to easy compatability and portability.
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| 211 |
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| 212 | o A infinite loop in emxomf has been fixed.
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| 213 |
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| 214 | o Linker error on sopen() has been corrected.
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| 215 |
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| 216 | o .... what did we forget...
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| 217 |
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| 218 |
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| 219 | v3.2.2 Alpha 1:
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| 220 | ---------------
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| 221 |
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| 222 | This is the first release from Innotek, and it contains the Innotek LIBC.
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| 223 | In addition to the new LIBC there is a number of other major changes:
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| 224 |
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| 225 | o Name mangling in OMF mode have changed.
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| 226 | Until this release emxomf used to pretty much strip one leading '_'
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| 227 | from symbols when converting them to omf. This is now longer done
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| 228 | chiefly in order to correctly support mangling calling conventions
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| 229 | like __stdcall and __cdecl. This change have the following side
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| 230 | effects:
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| 231 | - _System and __cdecl no longer produces the same names and hence
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| 232 | all OS/2 API which are _System must be declared as _System in
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| 233 | order to link.
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| 234 | - Assembly code might need an extra underscore to work, or
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| 235 | perhaps change the prototypes to _System.
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| 236 | - Global variables are prepended and underscore, so mixing VAC and
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| 237 | GCC, or accessing globals from asm, take care.
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| 238 | (MSC v6.0 does this too, so it's not any uncommon practise.)
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| 239 |
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| 240 | The OS/2 headers which are included are all updated to use _System.
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| 241 |
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| 242 | o TCPIP headers are updated a quite a bit to match the toolkit ones
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| 243 | and to reflect the fact that the new libc does not a having common
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| 244 | handle space for files and sockets. These changes aren't 100%
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| 245 | completed yet, and usage probably will uncover some issues left in
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| 246 | there. Also for the programmer there is the following changes in
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| 247 | the apis provided:
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| 248 | - TCPV40HDRS are supported and should work like with the toolkit
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| 249 | headers. It will alias all functions to tcpip40_ editions
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| 250 | (using #defines) so we get the right imports thru -llibsocket.
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| 251 | - There is no support for sockets in select(). To do select on
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| 252 | sockets you will have to use bsdselect() or os2_select().
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| 253 | bsdselect() is only available for TCPV40HDRS. For
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| 254 | !defined(TCPV40HDRS) fd_set is in the emx/bsd format and not the
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| 255 | OS/2 tcpip v5.0 format.
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| 256 | - Socket IOCTLs are not supported by the ioctl() libc function
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| 257 | because of the separate handle space for sockets. For sockets
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| 258 | so_ioctl() and os2_ioctl() are used. os2_ioctl() is not available
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| 259 | when TCPV40HDRS is defined. According to the tcpref in v5.0
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| 260 | so_ioctl() only supports BSD ioctls.
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| 261 | - writev() and readv() also clashes with libc. For socket handles
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| 262 | use so_writev() and so_readv().
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| 263 |
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| 264 | o The prefered OMF linker is now ilink. link386 will fail with an odd
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| 265 | error message if you tell gcc/g++ to make debug info. Set the
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| 266 | EMXOMFLD_LINKER environment variable to value ilink in order to use
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| 267 | ilink as OMF linker.
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| 268 | It likely that we will change the default OMF linker to ilink in an
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| 269 | later version of the GCC suite.
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| 270 |
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| 271 | o .... what did we forget...
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