Annotation of dietlibc/CHANGES, revision 1.176
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)
1.176 ! fefe 16: fixed a lot of bugs in getopt* (thanks, Johannes)
1.164 fefe 17:
1.115 fefe 18: 0.11:
19: fix major oops in DNS routines (only with WANT_FULL_RESOLV_CONF enabled).
1.116 fefe 20: fix vsscanf bug (Thanks, David Chappell).
1.117 fefe 21: add floor, ceil and memchr prototypes.
22: add __builtin_expect and expect #defines for gcc versions below 3.0
1.118 fefe 23: cleaner errno vs __errno_location handling
24: add placeholder iconv (iconv_open will always return EINVAL)
25: try to remove kernel 2.4 header dependency in IPv6 sockaddr_in6
26: initialization of getaddrinfo.
1.119 fefe 27: fix vsnprintf %X (printed lower case)
1.120 fefe 28: I wrote a new getopt. It appears to actually work (it is POSIX
29: compliant, it does not sort argv like the GNU version) and is only
30: a little over 300 bytes on x86.
1.121 fefe 31: Guillaume Cottenceau just wrote me that strncat should be even more
32: broken than it already is: it should append n bytes AND THEN \0!
33: I wonder how many programmers have produces off-by-one errors here...
1.122 fefe 34: Fix regexec offset return. autoconf now believes that diet libc has
35: POSIX regular expressions.
1.123 fefe 36: Fix fnmatch (a/b/* matched a/b/c/d even if FNM_PATHNAME was set)
1.124 fefe 37: Fix regular expression match for x* when there is no x at all.
1.125 fefe 38: Fix memory leak in error case in gethostbyname(2|). Thanks, Dietz Pröpper.
1.126 fefe 39: Add %h to vsnprintf.
1.127 fefe 40: Add FAQ.
1.128 fefe 41: Make %h work for signed numbers and add %hh to vsnprintf.
42: initgroups ignored the group argument :-(
43: remove printf references and nested functions from glob.
1.129 fefe 44: added an errno in libpthread that will display a prominent linker
45: warning.
1.131 fefe 46: started getting rid of kernel headers. Big task! :-(
1.130 fefe 47: add res_mkquery. The diet libc can now compile and link mtr.
1.132 olaf 48: Olaf: added a lot of code in libdl (not yet complete), changed the
49: startup code to make it work with his libdl and ld.so (needs still work
50: too)
1.134 fefe 51: __dns_readstartfiles only took the first domain or search path.
52: Thanks, Anthony de Boer
1.133 olaf 53: Olaf: added clone and a new unified_syscall for PowerPC
54: also dynlinker is now available (i386 only at this time)
1.135 fefe 55: crufted together a stdarg.h implementation from the various gcc headers.
1.136 fefe 56: implement getopt_long (ugh, the GNU people need professional help)
1.137 fefe 57: fixed word delimiters in regex (they looked for space, i.e. "," did
58: not work as delimiter)
1.138 fefe 59: errno.h now declares sys_errlist and sys_nerr.
1.143 fefe 60: added mkdtemp.
1.142 fefe 61: Uwe Ohse reported all of the following bugs:
62: ttyname should return 0 if !isatty.
63: realpath returns NULL if "." cannot be opened
64: putenv erroneously accepted (and mishandled) entries without "=".
65: popen returned 255 instead of 127 if /bin/sh could not be run.
66: fgetc did not set the internal EOF indicator on EOF.
67: bsearch contained an assumption about integer arithmetic overflow
68: behavior.
69: system did not set SIGCHLD and thus contained a race.
70: popen did not set close-on-exec and could leak an fd on malloc error.
1.147 fefe 71: daemon did not check whether open returns an fd below 3
72: perror did not save errno.
1.144 olaf 73: Olaf: Peter Jones reported some problems with perror; strerror had the
74: same problem.
75: Peter also posted a patch to atexit/exit. With some modifications it is
76: now implemented.
1.145 fefe 77: Unbuffered stdio and ungetc can no longer be disabled. I will try to
78: implement part of it using ELF weak symbols.
1.146 fefe 79: Added minimal sysconf (tehe) from David Chappell.
1.148 fefe 80: Added overflow handling for strtoul and strtol.
1.149 fefe 81: Added WANT_ETC_HOSTS in dietfeatures.h and made gethostbyname/2 use
82: it before falling back to DNS if enabled.
1.150 fefe 83: Added a littie backwards compatibility cruft for gpm (man, do these
84: sources stink!)
1.151 fefe 85: Added openpty.
1.152 fefe 86: Squeeze a few bytes off the is* routines, courtesy of Peter Jones.
1.154 fefe 87: Fix fseek return value.
1.155 fefe 88: Add dirname and basename.
1.156 fefe 89: Add a few i386 math routines contributed by Frank Klemm.
1.157 fefe 90: Fixed getservent (did not allow _ and - in the aliases).
91: Thanks, Oden Eriksson
1.158 fefe 92: Added a float.h so configure believes we have ANSI header files.
93: Fix a lot more stdio bugs that Uwe Ohse pointed out.
1.162 fefe 94: Olaf: has added a new scanf and printf core that is suitable for all
1.159 olaf 95: scanf and printf function implementations
1.160 fefe 96: Imported a few more functions and optimizations from Frank Klemm (he
97: also rewrote dtostr to have more precision)
1.161 olaf 98: Olaf: checked in a new sig* function family (based on rt_sig*).
99: legacy <2.2 signal-handling doesn't work at the moment.
1.163 fefe 100: Made rudimentary iconv that can convert back and forth between
101: iso-8859-1, utf-8 and ucs-4 (for debugging).
102: Thanks to Markus Kuhn for the excellent utf-8(7)!
1.115 fefe 103:
1.74 fefe 104: 0.10:
105: update getpagesize.
106: add personality.
1.75 fefe 107: add "%*s" and "%*.*s" support to vsnprintf.
1.76 fefe 108: add putchar (apparently arm-linux-gcc will substitute printf("\n")
109: with putchar('\n') behind your back...?!
1.77 fefe 110: import include/scsi/ from glibc.
1.78 fefe 111: add iopl.
1.80 fefe 112: add execl and sigdelset prototypes.
113: add getopt_long stuff to getopt.h (may compile but won't link).
1.81 fefe 114: add RPC headers (no code yet).
1.82 fefe 115: add mlockall, munlockall
1.83 fefe 116: make "diet gcc foo.c" work.
117: added Sun RPC code and removed as many warnings as possible in a
118: heroic act of self-mutilation.
119: added getproto* and getdtablesize for the RPC cruft :-(
1.84 fefe 120: added getpass. mount from util-linux actually compiles now!
121: fix the sig*set routines. mount actually works now *bg*
122: fix fwrite dividing by zero when trying to fwrite n records of size 0.
1.85 fefe 123: added an initial regex implementation (3500 bytes!!!).
1.87 fefe 124: add llseek and lseek64 with optional lseek fall-back.
1.88 fefe 125: add res_init.
126: add asprintf (ugh, what an ugly function).
1.89 fefe 127: expanded arpa/nameser.h to include backwards compatibility defines
1.90 fefe 128: add ut_name alias to ut_host in struct utmp.
129: add inet_ntop, inet_pton, gethostbyname2.
1.92 fefe 130: add sysinfo, recvmsg, sendmsg.
1.93 fefe 131: add endmntent, getmntent, setmntent.
1.94 fefe 132: fix fnmatch (thanks, Guillaume Cottenceau!)
1.96 fefe 133: add setenv.
134: remove __restrict from mntent.h, add __restrict__ removal alias for
135: older gcc versions in sys/cdefs.h.
136: add rlim_t, sig_atomic_t declarations.
137: add sigsetjmp #define for __sigsetjmp (oops).
138: (Thanks to Chris Siebenmann for these three bug reports)
1.97 fefe 139: add a gruesome hack to printf floating point to accept %f and kludge
140: together support for %.2f. Don't look at the code, please!
1.98 fefe 141: fixed tcsetpgrp (oops, this is embarassing! Thanks, Chris Siebenmann)
1.99 fefe 142: imported fix for entlib by Jeff Garzik.
1.100 fefe 143: add glob implementation from Guillaume Cottenceau (Thanks!!)
144: add libdl fragments from Olaf (Yeah! One step closer to dynamic linking!)
1.101 fefe 145: add REG_ICASE and word start/end handling to my regular expressions.
146: my regular expressions now actually match substrings (i.e. "foobar" to "bar").
1.102 fefe 147: wrap getcwd to comply to man page (the syscall returns the number of
148: bytes, not the buffer)
149: add realpath.
1.103 fefe 150: fix vfprintf.
1.104 fefe 151: fix *scanf %s zero termination.
152: add abs, labs, llabs.
1.105 fefe 153: add <sys/io.h>, ioperm syscall.
154: add flock to <sys/file.h>
1.106 fefe 155: fixes to bsearch and the regular expressions.
1.107 fefe 156: add fake herror.
1.108 fefe 157: add scandir and alphasort.
1.109 fefe 158: add killpg
1.110 fefe 159: implemented a gross hack to make libpthread compile when
160: dietfeatures.h does not define WANT_THREAD_SAFE (it's empty then).
1.111 fefe 161: add getaddrinfo and freeaddrinfo (man, what a fucked up interface!)
1.112 fefe 162: fix sigsuspend (syscall had completely fscked up arguments!)
1.113 fefe 163: RLIM_INFINITY from the kernel is broken. Thanks to Chris Siebenmann
164: for sending a patch.
1.114 fefe 165: add getserv*.
166: add WANT_FULL_RESOLV_CONF so that the DNS routines use "domain" and
167: "search" from resolv.conf.
1.74 fefe 168:
1.73 fefe 169: 0.9:
1.65 fefe 170: fixed initgroups (oops)
1.66 fefe 171: Cleanup appending file open for stdio (thanks, James Antill)
172: imported vfprintf fix from James Antill.
1.67 fefe 173: add fnmatch
174: change index, rindex and bcmp as weak ELF symbols (were #defined before)
1.68 fefe 175: Olaf added character classes to *scanf.
1.69 fefe 176: Put object and library files into a separate directory (bin-$ARCH).
177: Add "cross" make target to make all architectures.
178: Add "diet" program and man page.
1.70 fefe 179: Add getgrnam, getgrgid
1.71 fefe 180: Add cfmakeraw (Thanks, Antonio Musumeci)
1.72 fefe 181: localtime won't call gettimeofday when the tzfile parser is used.
1.65 fefe 182:
1.64 fefe 183: 0.8:
1.34 fefe 184: vsnprintf(0,...) estimated the length of strings with a padding width
185: incorrectly.
1.35 fefe 186: new reboot() from Olaf.
1.36 fefe 187: added prototypes for getsockopt and setsockopt.
1.39 fefe 188: added experimental sem* and shm*
1.38 fefe 189: define EXIT_SUCCESS and EXIT_FAILURE
1.40 fefe 190: added setvbuf (only changes mode, not buffer)
1.41 fefe 191: added dietwarning.h (woohoo, linker warnings!) and used it to warn of
192: insecurity (system, sprintf) or bloat (printf and stdio).
1.42 fefe 193: added qsort() and bsearch(). Benchmark on 1000 random ints:
194: glibc: 679414 cycles qsort and 3352 cycles bsearch
195: diet libc: 300010 cycles qsort, 553 cycles bsearch
196: I have no idea why glibc is so slow.
1.43 fefe 197: added __isnan (references by libm.a from glibc).
198: added popen() and pclose(). Now the diet libc can link slsh (from
199: S-Lang!)
1.44 fefe 200: corrected usleep. It was more of an msleep until now.
1.45 fefe 201: corrected __dtostr (it looped when trying to format "0.0").
202: several fixes to stdio (thanks to S-Lang's excellent test suite!)
1.46 fefe 203: added ungetc (does it work?)
1.47 fefe 204: added inet_aton (yuck!)
1.50 fefe 205: added gethostbyname, gethostbyaddr, gethostbyname_r and gethostbyaddr_r
1.48 fefe 206: added h_errno and __h_errno_location
207: added inet_ntoa
1.49 fefe 208: added setpgrp and getpgrp, strsignal and execv (thanks, Olaf)
1.51 fefe 209: add bcopy, index, rindex macros
210: add isgraph and isxdigit
1.52 fefe 211: add strftime (ugh!!!)
1.53 olaf 212: Olaf fixed strftime, gmtime_r leap year bug.
1.54 fefe 213: Jeff Garzik contributed a spec file. I put it in contrib and hope
214: everbody knows what to do with it...
215: Olaf checked in a ton of libpthread stuff.
1.55 fefe 216: added mkstemp using /dev/urandom (harder to guess than getpid()).
1.56 fefe 217: add large file backwards compatibility support (so gzip will run on
218: kernel 2.2 and 2.0)
1.57 fefe 219: added shutdown
1.58 fefe 220: added nice
221: added pseudo-locale support for is* (they are now weak aliases,
222: isupper -> __isupper_ascii etc). So, for example, liblatin1 can
223: overwrite the default is* functions.
1.59 fefe 224: added liblatin1.a
1.60 fefe 225: added tzfile implementation (does it work for anyone else?)
1.61 fefe 226: added syslog(3) (thanks to Rene Müller!)
1.62 fefe 227: Jeff Garzik contributed getgr*, getpw* and getsp* in one tiny package.
228: Thanks!
1.63 fefe 229: merged duplicate code in execv and execvp into exec_lib.o
1.34 fefe 230:
1.21 fefe 231: 0.7.2:
232: added several prototypes to already implemented functions and
233: <sys/reboot.h>. Thanks for Abraham for pointing this out.
1.22 fefe 234: added prototypes for process group and dup syscalls. Thanks to
235: Abraham again. He also contributed an implementation for daemon(),
236: an ugly BSD hack. I decided to diversify the lib/ directory a
237: little and now created a libugly/ directory for stuff like system()
238: and daemon() ;-)
239: added libstdio and moved all that stdio crap from lib/ there. The
240: idea is to start separating now what we will separate for shared
241: libraries anyway.
1.26 fefe 242: optimized x86 unified-syscall by Olaf.
1.27 fefe 243: added limits.h, removed __ARCHBITS from endian.h (use __WORDSIZE from
244: limits.h instead)
245: added remove.c and enough cruft to limits.h to make it compile lzo,
246: lzop and bzip2.
1.28 fefe 247: added mktime, asctime_r, asctime and ctime (needed for gzip).
248: Someone will need to implement a reader for the glibc localtime file
1.31 fefe 249: format some day (man tzfile, ugh!) :-(
1.29 fefe 250: added unlink prototype to unistd.h.
251: added gmtime and gmtime_r.
1.31 fefe 252: fixed sparc unified syscall error handling (please upgrade!).
1.30 fefe 253: removed readdir glibc compatibility cruft.
1.31 fefe 254: removed stat glibc compatibility cruft.
1.32 fefe 255: oops, my fread was broken for pipes.
1.33 fefe 256: Olaf found a bug in pipe() for sparc, too.
1.21 fefe 257:
1.9 fefe 258: 0.7.1:
1.11 fefe 259: optimized away the static arrays from __ltostr and __lltostr.
260: optimized away the static arrays (and more!) from strtoul and strtoull.
261: added system (by Olaf).
1.12 fefe 262: added tolower and toupper
1.13 fefe 263: added getopt from Olaf (~600 bytes on x86!)
1.14 fefe 264: added clone for mips (by Olaf).
265: fixed longjmp and setjmp on sparc not to require glibc include files.
1.15 olaf 266: added pause for all (by Olaf).
1.17 fefe 267: added __attribute__ ((__const__)) to ctype.h
1.16 fefe 268: added isupper and islower.
269: added putc and putchar as macros.
1.17 fefe 270: added strcasecmp and strncasecmp (thanks to Abraham vd Merwe for
271: insightful discussions and patches I partially used for the last three)
1.18 fefe 272: added getpriority and setpriority (also by Abraham)
1.19 fefe 273: oops, I broke strtoul in a recent optimization attempt.
1.20 fefe 274: oi, setjmp and longjmp were broken on other platforms, too!
275: Thanks to Sébastien Côté for reporting this.
1.9 fefe 276:
277: 0.7:
1.6 olaf 278: clone support for i386,alpha,arm and sparc by Olaf.
1.1 cvs 279: Initial dynamic loading glue for i386, also by Olaf.
280: We don't have a dynamic loader yet, so this is not yet usable.
281: added readv, sigdelset, sigaltstack, sigfillset, sigismember, usleep,
282: vsprintf, writev, all by Olaf.
1.2 fefe 283: imported readdir fix from Guillaume. Mhh, can the kernel interface
284: really be this broken?
1.3 fefe 285: Found a kludgy way to detect whether the kernel includes define struct
286: stat64 (they also define STAT64_HAS_BROKEN_ST_INO). If this does
287: not work for you, please tell me!
1.4 fefe 288: Removed bogus __seek_types enum, it's a bunch of #defines now.
1.7 fefe 289: Fixed stdio line buffering. The code was already there but I forgot
290: to mark stdio and stdout as line buffered. This should really be
291: done dynamically using isatty, though.
1.8 fefe 292: Removed superfluous "if (1)" in execvp.c
1.1 cvs 293:
294: 0.6.14:
295: *scanf did not append the 0 byte for %s.
296: added creat and changed creat to call open directly instead of open64.
297: did for fread what 0.6.10 did for fwrite.
298: repaired buffered stdio a little (line buffering is still not
299: supported).
300: [All of these bugs have been reported by Guillaume. Thanks!]
301: added __pure__ to strchr and strrchr in <string.h>
302:
303: 0.6.13:
304: included COPYING to make clear that the diet libc is covered by the
305: GNU General Public License (and _not_ the LGPL). That means that
306: you need to obtain a license from me if you want to use the diet
307: libc in a proprietary program that you want to distribute.
308: The x86 unified syscall swapped arguments #4 and #5 and noone
309: noticed until now! Thanks to Guillaume Cottenceau for reporting
310: this!
311: The malloc had a subtle bug with small allocations that could cause
312: segfault. Guillaume reported it, Olaf fixed it.
313:
314: 0.6.12:
315: added assert, statfs and fstatfs
316: added include/net/if.h so fget compiles again.
317:
318: 0.6.11:
319: added putenv.
320:
321: 0.6.10:
322: fixed fwrite. It returned the number of bytes written, not the number
323: of records. Thanks to Albert D. Cahalan for pointing this out.
324: fixed fgets. It returned EOF on empty lines. Thanks, Erik Frey.
325: added brk and sbrk. harold@nb.com.sg made me do it.
326:
327: 0.6.9:
328: fixed execvp not to return on ENOENT
329: did for {open|read|close|seek|tell}dir what I did for stat before.
330: The glibc compatibility part is currently non-functional.
331: fixed white space handling in sscanf " (" would not match " (".
332: fixed printf to accept 'l' flag.
333: fixed getpwuid (ignored last line)
334:
335: 0.6.8:
336: Olaf contributed initial thread-safe syscalls for i386, alpha, sparc,
337: mips and arm. I did the one for ppc. They can be enabled in dietfeatures.h.
338: added strlcpy and strlcat from OpenBSD.
339: added stat64, fstat64 and lstat64.
340: added endian.h and made ending of strlen.c endianness-aware
341: added string routines size tweak to dietfeatures.h. Most of the
342: string routines have been unrolled. This is up to three times as
343: fast but creates up to three times larger code. Now you can disable
344: the unrolling.
345: added sendfile.
346: I also added pread. It works on x86 and sparc but not on ppc and mips.
347: I have no idea what's going on. strace disagrees with the kernel.
348: Can anyone help? I asked the Linux kernel mailing list for help, too.
349: added a few aliases of the type __libc_open for open. nm on
350: libpthreads.so indicates that we will need them.
351:
352: 0.6.7:
353: the sources now compile without warnings with -Wall.
354: printf now prints "(null)" when %s is passed NULL. This can be
355: removed with WANT_NULL_PRINTF in dietfeatures.h
356: added vfprintf, execl, ttyname.
357: stat, lstat and fstat are now #defined to __dietstat, __dietlstat and
358: __dietfstat so they can use the normal kernel struct stat.
359: stat, lstat and fstat are now C wrappers that convert to the glibc
360: struct stat. So we can avoid that overhead for programs that use
361: dietlibc headers.
362:
363: 0.6.6:
364: changed the Makefiles so you can now set CFLAGS on the command line
365: added memccmp (analogous to memccpy) and strncmp.
366: Olaf fixed another bug in the sparc unified syscall.
367: Paul Clifford contributed a C version of his strlen.S that is much
368: more efficient than the previous strlen on all platforms! It also
369: looks like technology from Roswell. ;-}
370: added a "real" stdio. Well, almost. Please contribute!
371: added dietfeatures.h so you can remove features you don't need.
372: removed debug code from vsnprintf that changed \0 to ' ' (argh!).
373: stdio now works with simple programs and minigzip from libz.
374: stdio uses some major trickery to avoid linking the stdio, stderr and
375: stdout (and reserving space for them) when they are not used.
376:
377: 0.6.5:
378: Red Plait <redplait@ixcelerator.com> found several bugs in diet libc,
379: most of them bugs in the new header files, but also missing sigset
380: functions.
381: Paul Clifford contributed an assembly strlen.S for ARM and fixed
382: several bugs.
383: Fixed ppc/setjmp and mips/pipe.
384: Olaf contributed a new sparc unified syscall.
385:
386: 0.6.4:
387: declared is* static inline in getservent.
388: added assert_fail, strtoul, isalpha, isdigit, isalnum, isascii.
389: changed strlen to return 0 when passed NULL.
390: new, much smaller unified syscall for MIPS. Thanks to Olaf the Mad
391: Scientist who actually implemented this without access to a MIPS
392: box, just from reading the architecture manual. And it worked out
393: of the box.
394: started a set of system includes, mainly so that I can use lcc and
395: my alpha-linux cross compiler (which is unable to cross-compile
396: glibc). diet libc can now be compiled without any include files
397: from a normal libc. The includes do declare more than diet libc
398: currently delivers and they are still far from complete for real
399: applications.
400: I will only add assembly versions that are smaller _and_ faster than
401: the C version. Larger routines are only accepted if they are called
402: very often and are substantially faster.
403: added i386 assembly strchr, which is smaller and faster than the old
404: version. It is, however, larger than the version contributed by
405: proton (thanks, anyway).
406: added i386 strlen (31% faster, 14% smaller)
407: "make t" will now create a map file called "mapfile".
408:
409: 0.6.3:
410: added sys_errlist, strerror and perror
411: added isblank
412: added atol
413:
414: 0.6.2:
415: mmap for ARM didn't compile. Thanks, Paul!
416:
417: 0.6.1:
418: split mmap into the architecture specific subdirectories.
419: getenv now copes with environ==NULL, thanks Paul Clifford.
420: Paul also contributed a smaller ARM startup code.
421:
422: 0.6:
423: strcat returned the wrong result. Thanks, Dietz Pröpper.
424: strtod now understands a negative exponent (oops, thanks Bertram Barth)
425: Port to arm-linux-gnu, but on the Netwinder I use for testing the
426: __dtostr does not work (I have no idea why!)
427: The MIPS port now uses (much smaller) non-PIC code. That means that
428: the applications you link against diet libc also have to be compiled
429: non-PIC. I suggest copying the CFLAGS from the diet libc Makefile.
430: Thanks to Ralf Bächle for helping me with this!
431: I made subdirectories for the architectures and use VPATH to override
432: VPATH so that make finds the source file automatically. That should
433: simplify the sources greatly.
434: Olaf Dreesen contributed Alpha support including setjmp and longjmp!
435: ARM and MIPS now also have setjmp and longjmp
436: "compile" and "load" are now make targets. Use them for djb programs.
437: added contrib/elftrunc.c which will remove unnecessary ELF headers.
438: Again, contributed from Olaf. Great work!
439:
440: 0.5.12:
441: printf also does signed numbers.
442: If you don't use atexit, dietlibc now does not link exit, only _exit.
443: *printf now correctly returns the number of bytes written.
444: Olaf contributed experimental sscanf and vsscanf implementations.
445: If passed NULL as buffer, snprintf will not write anything but still
446: return the number of bytes it would have written.
447: Initial MIPS port! (Oh, the agony!)
448: No setjmp and longjmp support yet! Please contribute!
449: I even implemented unified syscalls for MIPS. Still, MIPS code is
450: almost twice the size of SPARC code. If anyone knows why: please
451: tell me!
452:
453: 0.5.11:
454: I implemented new unified syscalls for x86, sparc and ppc, this time based
455: on .s files and not .c files, and I moved the syscalls into
456: subdirectores to clean the dietlibc sources up a little.
457: A binary consisting of printf("%s is %d\n","olaf",23) is now
458: 2864 bytes on sparc
459: 2488 bytes on intel
460: I kludgily implemented fprintf(stdout,... and fprintf(stderr,...
461: to make a few more applications work.
462: Olaf Dreesen also implemented some unified syscall stuff for x86.
463: He discovered that with our unified syscall interface it actually
464: costs <10 bytes total to make all system calls thread safe!
465: I implemented atexit() (can register up to 4 callbacks).
466: I implemented strtod and __dtostr (the opposite). Now we can add
467: floating point support to vsnprintf and sscanf!
468:
469: 0.5.10:
470: I actually saw that I can not only merge the errno handling code of
471: the system calls on x86, I can also merge the rest (including the
472: arguments) except for setting the system call number. All those
473: system calls are now just a jump to a unified system call handler.
474: I got rid of x86openclose again. The savings are substantial:
475: chown from embutils went from 7664 to 7184 bytes!
476: If I'd move the system call wrappers to assembly language, I could
477: even reduce the alignment (does not matter since it's just a jump
478: anyway) and get rid of the "ret" behind each jump (one byte per
479: system call!)
480:
481: 0.5.9:
482: added memchr, strpbrk, strstr, strtol, isspace (hehe)
483: fixed strdup
484: fixed return values for strcpy and strcat (thanks to Norbert Berzen)
485: Olaf Dreesen contributed a strtol and initial {sn|vsn|}printf implementation
486: (no signed integers, only strings and unsigned integers (but
487: supporting octal, hex and decimal). Thanks, Olaf! (by the way:
488: that code must be wonderful, I don't understand it at all *bg*)
489: Olaf's printf does understand padding like in "%08d" and "%8d" and
490: automatically pads pointers with '0'.
491: Rewrote the x86 start code, old: 22 instructions, new: 12 instructions.
492: Thanks to proton for inspiration on this.
493: The new x86 start code also does not reference exit any more, thus saving
494: 64 bytes for executables that don't call exit explicitly.
495: [insert maniacal laughter] EVERY BYTE COUNTS!1!! ;-)
496: Moved errno and environ to start.S, saving no byte binary size but
497: speeding up compilation and slightly shortening dietlibc.a ;-)
498: For x86: joined open and close into one assembler file, sharing the
499: errno handling. This is a feasibility test and it actually saves a
500: few bytes. I think I will reimplement the _syscall[1-6] macros on
501: all platforms now to share the errno handling code for them.
502:
503: 0.5.8:
504: fixed strchr to be able to look for 0.
505:
506: added _llseek, ftruncate, getpgid, getresgid, getresuid, getsid,
507: memccpy, memmove, mprotect, setregid, setresgid, setresuid, setreuid,
508: strncpy, swapon, truncate, strtok, strtok_r, strspn, strcspn (all
509: contributed by Olaf Dreesen)
510:
511: added execvp, getcwd
512:
513: fixed __xmknod
514:
515: Note: can it be that the ftw interface really is so broken that I
516: cannot implement it without having to implement some searching data
517: structure? I included an experimental ftw implementation that will
518: not follow symlinks.
519:
520: 0.5.7:
521: oops, if_nametoindex was broken!
522:
523: 0.5.6:
524: ported to ppc-linux.
525: fixed i386 sigsetjmp (I mistyped the function name)
526: included sigjmp.c
527:
528: 0.5.5:
529: added wait, sys_siglist, longjmp/setjmp/sigsetjmp for i386 and sparc
530: actually, it wasn't fork that wasn't working for sparc, it was pipe.
531: I fixed it now.
532: dietlibc/SPARC assumes -msupersparc (does not provide div, mul, etc)
533: fixed readdir to use getdents and not the intel inline asm
534:
535: 0.5.4:
536: ported to sparclinux (sparc32 only). Beware: does not work yet.
537: added raise, abort, readlink, strcat, geteuid, geteuid, wait3, access
538:
539: 0.5.3:
540: added tcsetattr and getenv to compile e3
541:
542: 0.5.2:
543: added vhangup, tcgetattr, isatty and memcmp for fgetty
544: (http://www.fefe.de/fgetty/)
545: added localtime from uC-libc.
546:
547: 0.5.1:
548: stat and friends actually work now. Yuck! Another case of
549: translation between kernel and userland. Why can't the kernel
550: people and the libc people simply agree on a standard?
551: removed many unnecessary includes to speed up compilation.
552: added -fomit-frame-pointer and i386 compilation target to reduce code size.
553: inlined socketcall to reduce code size.
554: "load" and "compile" are examples for djb code.
555:
556: 0.5:
557: Olaf Dreesen contributed a much smaller implementation of malloc and friends.
558: each object file is now treated with "strip -x -R .note -R .comment"
559: split each system call into a separate object file
560: added ntohs, htons, alarm, if_indextoname and if_nametoindex
561:
562: 0.4.1:
563: oops, the strchr implementation was wrong. Thanks Jens Laas!
564:
565: 0.4:
566: copied opendir and friends from uC-libc.
567: added getservent and getservby* in gerservent.c
568:
569: 0.3:
570: remove readdir system call
571: added getdents system call
572: added getpwnam/getpwuid implementation in getpwnam.c
573: added a few string functions (in str*.c)
574:
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