Annotation of dietlibc/CHANGES, revision 1.175
1.164 fefe 1: 0.12:
2: more contributions from Frank Klemm.
1.165 fefe 3: iconv can now do UCS-2, too.
1.167 fefe 4: Imported several x86 assembly routines from Wouter van Kleunen.
1.166 fefe 5: Lots of bug fixes, and several more i386 specific versions of common
6: routines to make them smaller.
1.168 fefe 7: add memmem (a GNU extension that looks useful)
1.170 fefe 8: several changes from Michal Ludvig: inttypes.h gets C99 macros,
1.168 fefe 9: add pivot_root syscall, %n for *scanf.
1.169 fefe 10: add adjtimex (thanks, Laurent BERCOT)
1.171 fefe 11: add Frank Klemm's optimized md5
1.172 fefe 12: add -Os option to diet (see diet.1).
1.173 fefe 13: several IPv6 constants and HZ were missing, thanks Johannes Kloos.
1.174 fefe 14: add 32-bit uid/gid syscalls.
1.175 ! fefe 15: add rand48 (thanks, Johannes Kloos)
1.164 fefe 16:
1.115 fefe 17: 0.11:
18: fix major oops in DNS routines (only with WANT_FULL_RESOLV_CONF enabled).
1.116 fefe 19: fix vsscanf bug (Thanks, David Chappell).
1.117 fefe 20: add floor, ceil and memchr prototypes.
21: add __builtin_expect and expect #defines for gcc versions below 3.0
1.118 fefe 22: cleaner errno vs __errno_location handling
23: add placeholder iconv (iconv_open will always return EINVAL)
24: try to remove kernel 2.4 header dependency in IPv6 sockaddr_in6
25: initialization of getaddrinfo.
1.119 fefe 26: fix vsnprintf %X (printed lower case)
1.120 fefe 27: I wrote a new getopt. It appears to actually work (it is POSIX
28: compliant, it does not sort argv like the GNU version) and is only
29: a little over 300 bytes on x86.
1.121 fefe 30: Guillaume Cottenceau just wrote me that strncat should be even more
31: broken than it already is: it should append n bytes AND THEN \0!
32: I wonder how many programmers have produces off-by-one errors here...
1.122 fefe 33: Fix regexec offset return. autoconf now believes that diet libc has
34: POSIX regular expressions.
1.123 fefe 35: Fix fnmatch (a/b/* matched a/b/c/d even if FNM_PATHNAME was set)
1.124 fefe 36: Fix regular expression match for x* when there is no x at all.
1.125 fefe 37: Fix memory leak in error case in gethostbyname(2|). Thanks, Dietz Pröpper.
1.126 fefe 38: Add %h to vsnprintf.
1.127 fefe 39: Add FAQ.
1.128 fefe 40: Make %h work for signed numbers and add %hh to vsnprintf.
41: initgroups ignored the group argument :-(
42: remove printf references and nested functions from glob.
1.129 fefe 43: added an errno in libpthread that will display a prominent linker
44: warning.
1.131 fefe 45: started getting rid of kernel headers. Big task! :-(
1.130 fefe 46: add res_mkquery. The diet libc can now compile and link mtr.
1.132 olaf 47: Olaf: added a lot of code in libdl (not yet complete), changed the
48: startup code to make it work with his libdl and ld.so (needs still work
49: too)
1.134 fefe 50: __dns_readstartfiles only took the first domain or search path.
51: Thanks, Anthony de Boer
1.133 olaf 52: Olaf: added clone and a new unified_syscall for PowerPC
53: also dynlinker is now available (i386 only at this time)
1.135 fefe 54: crufted together a stdarg.h implementation from the various gcc headers.
1.136 fefe 55: implement getopt_long (ugh, the GNU people need professional help)
1.137 fefe 56: fixed word delimiters in regex (they looked for space, i.e. "," did
57: not work as delimiter)
1.138 fefe 58: errno.h now declares sys_errlist and sys_nerr.
1.143 fefe 59: added mkdtemp.
1.142 fefe 60: Uwe Ohse reported all of the following bugs:
61: ttyname should return 0 if !isatty.
62: realpath returns NULL if "." cannot be opened
63: putenv erroneously accepted (and mishandled) entries without "=".
64: popen returned 255 instead of 127 if /bin/sh could not be run.
65: fgetc did not set the internal EOF indicator on EOF.
66: bsearch contained an assumption about integer arithmetic overflow
67: behavior.
68: system did not set SIGCHLD and thus contained a race.
69: popen did not set close-on-exec and could leak an fd on malloc error.
1.147 fefe 70: daemon did not check whether open returns an fd below 3
71: perror did not save errno.
1.144 olaf 72: Olaf: Peter Jones reported some problems with perror; strerror had the
73: same problem.
74: Peter also posted a patch to atexit/exit. With some modifications it is
75: now implemented.
1.145 fefe 76: Unbuffered stdio and ungetc can no longer be disabled. I will try to
77: implement part of it using ELF weak symbols.
1.146 fefe 78: Added minimal sysconf (tehe) from David Chappell.
1.148 fefe 79: Added overflow handling for strtoul and strtol.
1.149 fefe 80: Added WANT_ETC_HOSTS in dietfeatures.h and made gethostbyname/2 use
81: it before falling back to DNS if enabled.
1.150 fefe 82: Added a littie backwards compatibility cruft for gpm (man, do these
83: sources stink!)
1.151 fefe 84: Added openpty.
1.152 fefe 85: Squeeze a few bytes off the is* routines, courtesy of Peter Jones.
1.154 fefe 86: Fix fseek return value.
1.155 fefe 87: Add dirname and basename.
1.156 fefe 88: Add a few i386 math routines contributed by Frank Klemm.
1.157 fefe 89: Fixed getservent (did not allow _ and - in the aliases).
90: Thanks, Oden Eriksson
1.158 fefe 91: Added a float.h so configure believes we have ANSI header files.
92: Fix a lot more stdio bugs that Uwe Ohse pointed out.
1.162 fefe 93: Olaf: has added a new scanf and printf core that is suitable for all
1.159 olaf 94: scanf and printf function implementations
1.160 fefe 95: Imported a few more functions and optimizations from Frank Klemm (he
96: also rewrote dtostr to have more precision)
1.161 olaf 97: Olaf: checked in a new sig* function family (based on rt_sig*).
98: legacy <2.2 signal-handling doesn't work at the moment.
1.163 fefe 99: Made rudimentary iconv that can convert back and forth between
100: iso-8859-1, utf-8 and ucs-4 (for debugging).
101: Thanks to Markus Kuhn for the excellent utf-8(7)!
1.115 fefe 102:
1.74 fefe 103: 0.10:
104: update getpagesize.
105: add personality.
1.75 fefe 106: add "%*s" and "%*.*s" support to vsnprintf.
1.76 fefe 107: add putchar (apparently arm-linux-gcc will substitute printf("\n")
108: with putchar('\n') behind your back...?!
1.77 fefe 109: import include/scsi/ from glibc.
1.78 fefe 110: add iopl.
1.80 fefe 111: add execl and sigdelset prototypes.
112: add getopt_long stuff to getopt.h (may compile but won't link).
1.81 fefe 113: add RPC headers (no code yet).
1.82 fefe 114: add mlockall, munlockall
1.83 fefe 115: make "diet gcc foo.c" work.
116: added Sun RPC code and removed as many warnings as possible in a
117: heroic act of self-mutilation.
118: added getproto* and getdtablesize for the RPC cruft :-(
1.84 fefe 119: added getpass. mount from util-linux actually compiles now!
120: fix the sig*set routines. mount actually works now *bg*
121: fix fwrite dividing by zero when trying to fwrite n records of size 0.
1.85 fefe 122: added an initial regex implementation (3500 bytes!!!).
1.87 fefe 123: add llseek and lseek64 with optional lseek fall-back.
1.88 fefe 124: add res_init.
125: add asprintf (ugh, what an ugly function).
1.89 fefe 126: expanded arpa/nameser.h to include backwards compatibility defines
1.90 fefe 127: add ut_name alias to ut_host in struct utmp.
128: add inet_ntop, inet_pton, gethostbyname2.
1.92 fefe 129: add sysinfo, recvmsg, sendmsg.
1.93 fefe 130: add endmntent, getmntent, setmntent.
1.94 fefe 131: fix fnmatch (thanks, Guillaume Cottenceau!)
1.96 fefe 132: add setenv.
133: remove __restrict from mntent.h, add __restrict__ removal alias for
134: older gcc versions in sys/cdefs.h.
135: add rlim_t, sig_atomic_t declarations.
136: add sigsetjmp #define for __sigsetjmp (oops).
137: (Thanks to Chris Siebenmann for these three bug reports)
1.97 fefe 138: add a gruesome hack to printf floating point to accept %f and kludge
139: together support for %.2f. Don't look at the code, please!
1.98 fefe 140: fixed tcsetpgrp (oops, this is embarassing! Thanks, Chris Siebenmann)
1.99 fefe 141: imported fix for entlib by Jeff Garzik.
1.100 fefe 142: add glob implementation from Guillaume Cottenceau (Thanks!!)
143: add libdl fragments from Olaf (Yeah! One step closer to dynamic linking!)
1.101 fefe 144: add REG_ICASE and word start/end handling to my regular expressions.
145: my regular expressions now actually match substrings (i.e. "foobar" to "bar").
1.102 fefe 146: wrap getcwd to comply to man page (the syscall returns the number of
147: bytes, not the buffer)
148: add realpath.
1.103 fefe 149: fix vfprintf.
1.104 fefe 150: fix *scanf %s zero termination.
151: add abs, labs, llabs.
1.105 fefe 152: add <sys/io.h>, ioperm syscall.
153: add flock to <sys/file.h>
1.106 fefe 154: fixes to bsearch and the regular expressions.
1.107 fefe 155: add fake herror.
1.108 fefe 156: add scandir and alphasort.
1.109 fefe 157: add killpg
1.110 fefe 158: implemented a gross hack to make libpthread compile when
159: dietfeatures.h does not define WANT_THREAD_SAFE (it's empty then).
1.111 fefe 160: add getaddrinfo and freeaddrinfo (man, what a fucked up interface!)
1.112 fefe 161: fix sigsuspend (syscall had completely fscked up arguments!)
1.113 fefe 162: RLIM_INFINITY from the kernel is broken. Thanks to Chris Siebenmann
163: for sending a patch.
1.114 fefe 164: add getserv*.
165: add WANT_FULL_RESOLV_CONF so that the DNS routines use "domain" and
166: "search" from resolv.conf.
1.74 fefe 167:
1.73 fefe 168: 0.9:
1.65 fefe 169: fixed initgroups (oops)
1.66 fefe 170: Cleanup appending file open for stdio (thanks, James Antill)
171: imported vfprintf fix from James Antill.
1.67 fefe 172: add fnmatch
173: change index, rindex and bcmp as weak ELF symbols (were #defined before)
1.68 fefe 174: Olaf added character classes to *scanf.
1.69 fefe 175: Put object and library files into a separate directory (bin-$ARCH).
176: Add "cross" make target to make all architectures.
177: Add "diet" program and man page.
1.70 fefe 178: Add getgrnam, getgrgid
1.71 fefe 179: Add cfmakeraw (Thanks, Antonio Musumeci)
1.72 fefe 180: localtime won't call gettimeofday when the tzfile parser is used.
1.65 fefe 181:
1.64 fefe 182: 0.8:
1.34 fefe 183: vsnprintf(0,...) estimated the length of strings with a padding width
184: incorrectly.
1.35 fefe 185: new reboot() from Olaf.
1.36 fefe 186: added prototypes for getsockopt and setsockopt.
1.39 fefe 187: added experimental sem* and shm*
1.38 fefe 188: define EXIT_SUCCESS and EXIT_FAILURE
1.40 fefe 189: added setvbuf (only changes mode, not buffer)
1.41 fefe 190: added dietwarning.h (woohoo, linker warnings!) and used it to warn of
191: insecurity (system, sprintf) or bloat (printf and stdio).
1.42 fefe 192: added qsort() and bsearch(). Benchmark on 1000 random ints:
193: glibc: 679414 cycles qsort and 3352 cycles bsearch
194: diet libc: 300010 cycles qsort, 553 cycles bsearch
195: I have no idea why glibc is so slow.
1.43 fefe 196: added __isnan (references by libm.a from glibc).
197: added popen() and pclose(). Now the diet libc can link slsh (from
198: S-Lang!)
1.44 fefe 199: corrected usleep. It was more of an msleep until now.
1.45 fefe 200: corrected __dtostr (it looped when trying to format "0.0").
201: several fixes to stdio (thanks to S-Lang's excellent test suite!)
1.46 fefe 202: added ungetc (does it work?)
1.47 fefe 203: added inet_aton (yuck!)
1.50 fefe 204: added gethostbyname, gethostbyaddr, gethostbyname_r and gethostbyaddr_r
1.48 fefe 205: added h_errno and __h_errno_location
206: added inet_ntoa
1.49 fefe 207: added setpgrp and getpgrp, strsignal and execv (thanks, Olaf)
1.51 fefe 208: add bcopy, index, rindex macros
209: add isgraph and isxdigit
1.52 fefe 210: add strftime (ugh!!!)
1.53 olaf 211: Olaf fixed strftime, gmtime_r leap year bug.
1.54 fefe 212: Jeff Garzik contributed a spec file. I put it in contrib and hope
213: everbody knows what to do with it...
214: Olaf checked in a ton of libpthread stuff.
1.55 fefe 215: added mkstemp using /dev/urandom (harder to guess than getpid()).
1.56 fefe 216: add large file backwards compatibility support (so gzip will run on
217: kernel 2.2 and 2.0)
1.57 fefe 218: added shutdown
1.58 fefe 219: added nice
220: added pseudo-locale support for is* (they are now weak aliases,
221: isupper -> __isupper_ascii etc). So, for example, liblatin1 can
222: overwrite the default is* functions.
1.59 fefe 223: added liblatin1.a
1.60 fefe 224: added tzfile implementation (does it work for anyone else?)
1.61 fefe 225: added syslog(3) (thanks to Rene Müller!)
1.62 fefe 226: Jeff Garzik contributed getgr*, getpw* and getsp* in one tiny package.
227: Thanks!
1.63 fefe 228: merged duplicate code in execv and execvp into exec_lib.o
1.34 fefe 229:
1.21 fefe 230: 0.7.2:
231: added several prototypes to already implemented functions and
232: <sys/reboot.h>. Thanks for Abraham for pointing this out.
1.22 fefe 233: added prototypes for process group and dup syscalls. Thanks to
234: Abraham again. He also contributed an implementation for daemon(),
235: an ugly BSD hack. I decided to diversify the lib/ directory a
236: little and now created a libugly/ directory for stuff like system()
237: and daemon() ;-)
238: added libstdio and moved all that stdio crap from lib/ there. The
239: idea is to start separating now what we will separate for shared
240: libraries anyway.
1.26 fefe 241: optimized x86 unified-syscall by Olaf.
1.27 fefe 242: added limits.h, removed __ARCHBITS from endian.h (use __WORDSIZE from
243: limits.h instead)
244: added remove.c and enough cruft to limits.h to make it compile lzo,
245: lzop and bzip2.
1.28 fefe 246: added mktime, asctime_r, asctime and ctime (needed for gzip).
247: Someone will need to implement a reader for the glibc localtime file
1.31 fefe 248: format some day (man tzfile, ugh!) :-(
1.29 fefe 249: added unlink prototype to unistd.h.
250: added gmtime and gmtime_r.
1.31 fefe 251: fixed sparc unified syscall error handling (please upgrade!).
1.30 fefe 252: removed readdir glibc compatibility cruft.
1.31 fefe 253: removed stat glibc compatibility cruft.
1.32 fefe 254: oops, my fread was broken for pipes.
1.33 fefe 255: Olaf found a bug in pipe() for sparc, too.
1.21 fefe 256:
1.9 fefe 257: 0.7.1:
1.11 fefe 258: optimized away the static arrays from __ltostr and __lltostr.
259: optimized away the static arrays (and more!) from strtoul and strtoull.
260: added system (by Olaf).
1.12 fefe 261: added tolower and toupper
1.13 fefe 262: added getopt from Olaf (~600 bytes on x86!)
1.14 fefe 263: added clone for mips (by Olaf).
264: fixed longjmp and setjmp on sparc not to require glibc include files.
1.15 olaf 265: added pause for all (by Olaf).
1.17 fefe 266: added __attribute__ ((__const__)) to ctype.h
1.16 fefe 267: added isupper and islower.
268: added putc and putchar as macros.
1.17 fefe 269: added strcasecmp and strncasecmp (thanks to Abraham vd Merwe for
270: insightful discussions and patches I partially used for the last three)
1.18 fefe 271: added getpriority and setpriority (also by Abraham)
1.19 fefe 272: oops, I broke strtoul in a recent optimization attempt.
1.20 fefe 273: oi, setjmp and longjmp were broken on other platforms, too!
274: Thanks to Sébastien Côté for reporting this.
1.9 fefe 275:
276: 0.7:
1.6 olaf 277: clone support for i386,alpha,arm and sparc by Olaf.
1.1 cvs 278: Initial dynamic loading glue for i386, also by Olaf.
279: We don't have a dynamic loader yet, so this is not yet usable.
280: added readv, sigdelset, sigaltstack, sigfillset, sigismember, usleep,
281: vsprintf, writev, all by Olaf.
1.2 fefe 282: imported readdir fix from Guillaume. Mhh, can the kernel interface
283: really be this broken?
1.3 fefe 284: Found a kludgy way to detect whether the kernel includes define struct
285: stat64 (they also define STAT64_HAS_BROKEN_ST_INO). If this does
286: not work for you, please tell me!
1.4 fefe 287: Removed bogus __seek_types enum, it's a bunch of #defines now.
1.7 fefe 288: Fixed stdio line buffering. The code was already there but I forgot
289: to mark stdio and stdout as line buffered. This should really be
290: done dynamically using isatty, though.
1.8 fefe 291: Removed superfluous "if (1)" in execvp.c
1.1 cvs 292:
293: 0.6.14:
294: *scanf did not append the 0 byte for %s.
295: added creat and changed creat to call open directly instead of open64.
296: did for fread what 0.6.10 did for fwrite.
297: repaired buffered stdio a little (line buffering is still not
298: supported).
299: [All of these bugs have been reported by Guillaume. Thanks!]
300: added __pure__ to strchr and strrchr in <string.h>
301:
302: 0.6.13:
303: included COPYING to make clear that the diet libc is covered by the
304: GNU General Public License (and _not_ the LGPL). That means that
305: you need to obtain a license from me if you want to use the diet
306: libc in a proprietary program that you want to distribute.
307: The x86 unified syscall swapped arguments #4 and #5 and noone
308: noticed until now! Thanks to Guillaume Cottenceau for reporting
309: this!
310: The malloc had a subtle bug with small allocations that could cause
311: segfault. Guillaume reported it, Olaf fixed it.
312:
313: 0.6.12:
314: added assert, statfs and fstatfs
315: added include/net/if.h so fget compiles again.
316:
317: 0.6.11:
318: added putenv.
319:
320: 0.6.10:
321: fixed fwrite. It returned the number of bytes written, not the number
322: of records. Thanks to Albert D. Cahalan for pointing this out.
323: fixed fgets. It returned EOF on empty lines. Thanks, Erik Frey.
324: added brk and sbrk. harold@nb.com.sg made me do it.
325:
326: 0.6.9:
327: fixed execvp not to return on ENOENT
328: did for {open|read|close|seek|tell}dir what I did for stat before.
329: The glibc compatibility part is currently non-functional.
330: fixed white space handling in sscanf " (" would not match " (".
331: fixed printf to accept 'l' flag.
332: fixed getpwuid (ignored last line)
333:
334: 0.6.8:
335: Olaf contributed initial thread-safe syscalls for i386, alpha, sparc,
336: mips and arm. I did the one for ppc. They can be enabled in dietfeatures.h.
337: added strlcpy and strlcat from OpenBSD.
338: added stat64, fstat64 and lstat64.
339: added endian.h and made ending of strlen.c endianness-aware
340: added string routines size tweak to dietfeatures.h. Most of the
341: string routines have been unrolled. This is up to three times as
342: fast but creates up to three times larger code. Now you can disable
343: the unrolling.
344: added sendfile.
345: I also added pread. It works on x86 and sparc but not on ppc and mips.
346: I have no idea what's going on. strace disagrees with the kernel.
347: Can anyone help? I asked the Linux kernel mailing list for help, too.
348: added a few aliases of the type __libc_open for open. nm on
349: libpthreads.so indicates that we will need them.
350:
351: 0.6.7:
352: the sources now compile without warnings with -Wall.
353: printf now prints "(null)" when %s is passed NULL. This can be
354: removed with WANT_NULL_PRINTF in dietfeatures.h
355: added vfprintf, execl, ttyname.
356: stat, lstat and fstat are now #defined to __dietstat, __dietlstat and
357: __dietfstat so they can use the normal kernel struct stat.
358: stat, lstat and fstat are now C wrappers that convert to the glibc
359: struct stat. So we can avoid that overhead for programs that use
360: dietlibc headers.
361:
362: 0.6.6:
363: changed the Makefiles so you can now set CFLAGS on the command line
364: added memccmp (analogous to memccpy) and strncmp.
365: Olaf fixed another bug in the sparc unified syscall.
366: Paul Clifford contributed a C version of his strlen.S that is much
367: more efficient than the previous strlen on all platforms! It also
368: looks like technology from Roswell. ;-}
369: added a "real" stdio. Well, almost. Please contribute!
370: added dietfeatures.h so you can remove features you don't need.
371: removed debug code from vsnprintf that changed \0 to ' ' (argh!).
372: stdio now works with simple programs and minigzip from libz.
373: stdio uses some major trickery to avoid linking the stdio, stderr and
374: stdout (and reserving space for them) when they are not used.
375:
376: 0.6.5:
377: Red Plait <redplait@ixcelerator.com> found several bugs in diet libc,
378: most of them bugs in the new header files, but also missing sigset
379: functions.
380: Paul Clifford contributed an assembly strlen.S for ARM and fixed
381: several bugs.
382: Fixed ppc/setjmp and mips/pipe.
383: Olaf contributed a new sparc unified syscall.
384:
385: 0.6.4:
386: declared is* static inline in getservent.
387: added assert_fail, strtoul, isalpha, isdigit, isalnum, isascii.
388: changed strlen to return 0 when passed NULL.
389: new, much smaller unified syscall for MIPS. Thanks to Olaf the Mad
390: Scientist who actually implemented this without access to a MIPS
391: box, just from reading the architecture manual. And it worked out
392: of the box.
393: started a set of system includes, mainly so that I can use lcc and
394: my alpha-linux cross compiler (which is unable to cross-compile
395: glibc). diet libc can now be compiled without any include files
396: from a normal libc. The includes do declare more than diet libc
397: currently delivers and they are still far from complete for real
398: applications.
399: I will only add assembly versions that are smaller _and_ faster than
400: the C version. Larger routines are only accepted if they are called
401: very often and are substantially faster.
402: added i386 assembly strchr, which is smaller and faster than the old
403: version. It is, however, larger than the version contributed by
404: proton (thanks, anyway).
405: added i386 strlen (31% faster, 14% smaller)
406: "make t" will now create a map file called "mapfile".
407:
408: 0.6.3:
409: added sys_errlist, strerror and perror
410: added isblank
411: added atol
412:
413: 0.6.2:
414: mmap for ARM didn't compile. Thanks, Paul!
415:
416: 0.6.1:
417: split mmap into the architecture specific subdirectories.
418: getenv now copes with environ==NULL, thanks Paul Clifford.
419: Paul also contributed a smaller ARM startup code.
420:
421: 0.6:
422: strcat returned the wrong result. Thanks, Dietz Pröpper.
423: strtod now understands a negative exponent (oops, thanks Bertram Barth)
424: Port to arm-linux-gnu, but on the Netwinder I use for testing the
425: __dtostr does not work (I have no idea why!)
426: The MIPS port now uses (much smaller) non-PIC code. That means that
427: the applications you link against diet libc also have to be compiled
428: non-PIC. I suggest copying the CFLAGS from the diet libc Makefile.
429: Thanks to Ralf Bächle for helping me with this!
430: I made subdirectories for the architectures and use VPATH to override
431: VPATH so that make finds the source file automatically. That should
432: simplify the sources greatly.
433: Olaf Dreesen contributed Alpha support including setjmp and longjmp!
434: ARM and MIPS now also have setjmp and longjmp
435: "compile" and "load" are now make targets. Use them for djb programs.
436: added contrib/elftrunc.c which will remove unnecessary ELF headers.
437: Again, contributed from Olaf. Great work!
438:
439: 0.5.12:
440: printf also does signed numbers.
441: If you don't use atexit, dietlibc now does not link exit, only _exit.
442: *printf now correctly returns the number of bytes written.
443: Olaf contributed experimental sscanf and vsscanf implementations.
444: If passed NULL as buffer, snprintf will not write anything but still
445: return the number of bytes it would have written.
446: Initial MIPS port! (Oh, the agony!)
447: No setjmp and longjmp support yet! Please contribute!
448: I even implemented unified syscalls for MIPS. Still, MIPS code is
449: almost twice the size of SPARC code. If anyone knows why: please
450: tell me!
451:
452: 0.5.11:
453: I implemented new unified syscalls for x86, sparc and ppc, this time based
454: on .s files and not .c files, and I moved the syscalls into
455: subdirectores to clean the dietlibc sources up a little.
456: A binary consisting of printf("%s is %d\n","olaf",23) is now
457: 2864 bytes on sparc
458: 2488 bytes on intel
459: I kludgily implemented fprintf(stdout,... and fprintf(stderr,...
460: to make a few more applications work.
461: Olaf Dreesen also implemented some unified syscall stuff for x86.
462: He discovered that with our unified syscall interface it actually
463: costs <10 bytes total to make all system calls thread safe!
464: I implemented atexit() (can register up to 4 callbacks).
465: I implemented strtod and __dtostr (the opposite). Now we can add
466: floating point support to vsnprintf and sscanf!
467:
468: 0.5.10:
469: I actually saw that I can not only merge the errno handling code of
470: the system calls on x86, I can also merge the rest (including the
471: arguments) except for setting the system call number. All those
472: system calls are now just a jump to a unified system call handler.
473: I got rid of x86openclose again. The savings are substantial:
474: chown from embutils went from 7664 to 7184 bytes!
475: If I'd move the system call wrappers to assembly language, I could
476: even reduce the alignment (does not matter since it's just a jump
477: anyway) and get rid of the "ret" behind each jump (one byte per
478: system call!)
479:
480: 0.5.9:
481: added memchr, strpbrk, strstr, strtol, isspace (hehe)
482: fixed strdup
483: fixed return values for strcpy and strcat (thanks to Norbert Berzen)
484: Olaf Dreesen contributed a strtol and initial {sn|vsn|}printf implementation
485: (no signed integers, only strings and unsigned integers (but
486: supporting octal, hex and decimal). Thanks, Olaf! (by the way:
487: that code must be wonderful, I don't understand it at all *bg*)
488: Olaf's printf does understand padding like in "%08d" and "%8d" and
489: automatically pads pointers with '0'.
490: Rewrote the x86 start code, old: 22 instructions, new: 12 instructions.
491: Thanks to proton for inspiration on this.
492: The new x86 start code also does not reference exit any more, thus saving
493: 64 bytes for executables that don't call exit explicitly.
494: [insert maniacal laughter] EVERY BYTE COUNTS!1!! ;-)
495: Moved errno and environ to start.S, saving no byte binary size but
496: speeding up compilation and slightly shortening dietlibc.a ;-)
497: For x86: joined open and close into one assembler file, sharing the
498: errno handling. This is a feasibility test and it actually saves a
499: few bytes. I think I will reimplement the _syscall[1-6] macros on
500: all platforms now to share the errno handling code for them.
501:
502: 0.5.8:
503: fixed strchr to be able to look for 0.
504:
505: added _llseek, ftruncate, getpgid, getresgid, getresuid, getsid,
506: memccpy, memmove, mprotect, setregid, setresgid, setresuid, setreuid,
507: strncpy, swapon, truncate, strtok, strtok_r, strspn, strcspn (all
508: contributed by Olaf Dreesen)
509:
510: added execvp, getcwd
511:
512: fixed __xmknod
513:
514: Note: can it be that the ftw interface really is so broken that I
515: cannot implement it without having to implement some searching data
516: structure? I included an experimental ftw implementation that will
517: not follow symlinks.
518:
519: 0.5.7:
520: oops, if_nametoindex was broken!
521:
522: 0.5.6:
523: ported to ppc-linux.
524: fixed i386 sigsetjmp (I mistyped the function name)
525: included sigjmp.c
526:
527: 0.5.5:
528: added wait, sys_siglist, longjmp/setjmp/sigsetjmp for i386 and sparc
529: actually, it wasn't fork that wasn't working for sparc, it was pipe.
530: I fixed it now.
531: dietlibc/SPARC assumes -msupersparc (does not provide div, mul, etc)
532: fixed readdir to use getdents and not the intel inline asm
533:
534: 0.5.4:
535: ported to sparclinux (sparc32 only). Beware: does not work yet.
536: added raise, abort, readlink, strcat, geteuid, geteuid, wait3, access
537:
538: 0.5.3:
539: added tcsetattr and getenv to compile e3
540:
541: 0.5.2:
542: added vhangup, tcgetattr, isatty and memcmp for fgetty
543: (http://www.fefe.de/fgetty/)
544: added localtime from uC-libc.
545:
546: 0.5.1:
547: stat and friends actually work now. Yuck! Another case of
548: translation between kernel and userland. Why can't the kernel
549: people and the libc people simply agree on a standard?
550: removed many unnecessary includes to speed up compilation.
551: added -fomit-frame-pointer and i386 compilation target to reduce code size.
552: inlined socketcall to reduce code size.
553: "load" and "compile" are examples for djb code.
554:
555: 0.5:
556: Olaf Dreesen contributed a much smaller implementation of malloc and friends.
557: each object file is now treated with "strip -x -R .note -R .comment"
558: split each system call into a separate object file
559: added ntohs, htons, alarm, if_indextoname and if_nametoindex
560:
561: 0.4.1:
562: oops, the strchr implementation was wrong. Thanks Jens Laas!
563:
564: 0.4:
565: copied opendir and friends from uC-libc.
566: added getservent and getservby* in gerservent.c
567:
568: 0.3:
569: remove readdir system call
570: added getdents system call
571: added getpwnam/getpwuid implementation in getpwnam.c
572: added a few string functions (in str*.c)
573:
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