Annotation of dietlibc/CHANGES, revision 1.204
1.193 fefe 1: 0.13:
1.194 fefe 2: add readdir64 and automatic mapping if _FILE_OFFSET_BITS == 64
1.199 fefe 3: make diet not include the linker safeguard stuff when preprocessing
1.196 leitner 4: Olaf: port to s/390!
5: me: fix vfork (it was put into dietlibc.a twice)
1.197 leitner 6: res_query did not initialize last
1.199 fefe 7: diet (not diet-dyn, of course) now adds -static to the gcc command line
1.198 leitner 8: fixed fflush on input streams (tic from ncurses exposed this)
1.199 fefe 9: duh, there is an alarm system call, too, so we use it and not setitimer
1.200 fefe 10: fix comparison in gmtime_r that caused Jan 1 to be converted to Dec 32.
1.201 fefe 11: rewrote __dtostr (it also has one more argument now)
1.204 ! fefe 12: Thanks to Erik Troan for these:
! 13: make putenv behave like glibc (putenv("HOME") == unsetenv("HOME"))
! 14: fix strncat for the case where n == 0 (security implications?)
! 15: fix bsearch (it didn't find the very last element in the array, same
! 16: bug in both the C and the i386 assembly version).
! 17: fix brk (the syscall was documented incorrectly in the Linux man page)
! 18: Thanks, Thomas Ogrisegg!
1.193 fefe 19:
1.164 fefe 20: 0.12:
21: more contributions from Frank Klemm.
1.165 fefe 22: iconv can now do UCS-2, too.
1.167 fefe 23: Imported several x86 assembly routines from Wouter van Kleunen.
1.166 fefe 24: Lots of bug fixes, and several more i386 specific versions of common
25: routines to make them smaller.
1.168 fefe 26: add memmem (a GNU extension that looks useful)
1.170 fefe 27: several changes from Michal Ludvig: inttypes.h gets C99 macros,
1.168 fefe 28: add pivot_root syscall, %n for *scanf.
1.169 fefe 29: add adjtimex (thanks, Laurent BERCOT)
1.171 fefe 30: add Frank Klemm's optimized md5
1.172 fefe 31: add -Os option to diet (see diet.1).
1.173 fefe 32: several IPv6 constants and HZ were missing, thanks Johannes Kloos.
1.174 fefe 33: add 32-bit uid/gid syscalls.
1.175 fefe 34: add rand48 (thanks, Johannes Kloos)
1.176 fefe 35: fixed a lot of bugs in getopt* (thanks, Johannes)
1.177 fefe 36: add strxfrm and tweak limits.h. glib-1.3.8 now compiles without changes.
37: add a few more module syscalls. modutils-2.4.9 now compiles without changes.
38: fix gethostent alias list termination. Major oops.
1.178 fefe 39: add execle and two DNS constants (from Johannes Kloos).
1.179 fefe 40: opendir did not close-on-exec (thanks, Laurent Bercot).
1.180 fefe 41: DNS will now properly signal errors and set h_errno.
42: A few more cleanups (thanks, Andreas Jabs and Matthias Andree).
1.181 fefe 43: Added an uber-cool linker safeguard feature! Idea by Matthias Andree.
44: If you enable WANT_SAFEGUARD in dietfeatures.h, diet will include an
45: external reference to a symbol that is only in the diet libc. So,
46: when you accidentally link a diet libc compiled object file against
47: glibc, the linker will barf. This will bloat your object files, but
48: you can remove all the references with "strip -R .note" from
49: the binaries in the end (which you should do anyway).
1.182 fefe 50: fix ARM unified syscall (select did not work).
1.183 fefe 51: add getpwent_r ala glibc and replace getpwent
52: do the same for getgrent and getspent
53: remove entlib (new code is smaller)
1.184 fefe 54: rewrite getserv* to use parselib (and provide ..._r, too)
1.185 fefe 55: add getpwnam_r and getpwuid_r
1.186 fefe 56: rewrite getproto* to use parselib (and protive ..._r, too)
1.187 fefe 57: Olaf muddled with the dynamic linker. It's a clean-room
58: implementation in the sense that it once worked for Olaf in a clean
59: room ;)
1.188 fefe 60: add if_nameindex and if_freenameindex.
61: fixed arm unified syscalls to work with current binutils (; is no
62: longer a line separator but starts a comment, switched to .macro)
1.189 fefe 63: changed all st_[cma]time types to signed long so comparisons against
64: LONG_MIN will work correctly. (GNU tar does this)
1.190 fefe 65: fixed two bugs regarding ungetc.
66: add getusershell, setusershell, endusershell (for vs_ftpd)
67: add prctl, dirfd (also for vs_ftpd)
1.191 fefe 68: fixed strftime (was completely hosed)
1.192 fefe 69: added real make install target
1.164 fefe 70:
1.115 fefe 71: 0.11:
72: fix major oops in DNS routines (only with WANT_FULL_RESOLV_CONF enabled).
1.116 fefe 73: fix vsscanf bug (Thanks, David Chappell).
1.117 fefe 74: add floor, ceil and memchr prototypes.
75: add __builtin_expect and expect #defines for gcc versions below 3.0
1.118 fefe 76: cleaner errno vs __errno_location handling
77: add placeholder iconv (iconv_open will always return EINVAL)
78: try to remove kernel 2.4 header dependency in IPv6 sockaddr_in6
79: initialization of getaddrinfo.
1.119 fefe 80: fix vsnprintf %X (printed lower case)
1.120 fefe 81: I wrote a new getopt. It appears to actually work (it is POSIX
82: compliant, it does not sort argv like the GNU version) and is only
83: a little over 300 bytes on x86.
1.121 fefe 84: Guillaume Cottenceau just wrote me that strncat should be even more
85: broken than it already is: it should append n bytes AND THEN \0!
86: I wonder how many programmers have produces off-by-one errors here...
1.122 fefe 87: Fix regexec offset return. autoconf now believes that diet libc has
88: POSIX regular expressions.
1.123 fefe 89: Fix fnmatch (a/b/* matched a/b/c/d even if FNM_PATHNAME was set)
1.124 fefe 90: Fix regular expression match for x* when there is no x at all.
1.125 fefe 91: Fix memory leak in error case in gethostbyname(2|). Thanks, Dietz Pröpper.
1.126 fefe 92: Add %h to vsnprintf.
1.127 fefe 93: Add FAQ.
1.128 fefe 94: Make %h work for signed numbers and add %hh to vsnprintf.
95: initgroups ignored the group argument :-(
96: remove printf references and nested functions from glob.
1.129 fefe 97: added an errno in libpthread that will display a prominent linker
98: warning.
1.131 fefe 99: started getting rid of kernel headers. Big task! :-(
1.130 fefe 100: add res_mkquery. The diet libc can now compile and link mtr.
1.132 olaf 101: Olaf: added a lot of code in libdl (not yet complete), changed the
102: startup code to make it work with his libdl and ld.so (needs still work
103: too)
1.134 fefe 104: __dns_readstartfiles only took the first domain or search path.
105: Thanks, Anthony de Boer
1.133 olaf 106: Olaf: added clone and a new unified_syscall for PowerPC
107: also dynlinker is now available (i386 only at this time)
1.135 fefe 108: crufted together a stdarg.h implementation from the various gcc headers.
1.136 fefe 109: implement getopt_long (ugh, the GNU people need professional help)
1.137 fefe 110: fixed word delimiters in regex (they looked for space, i.e. "," did
111: not work as delimiter)
1.138 fefe 112: errno.h now declares sys_errlist and sys_nerr.
1.143 fefe 113: added mkdtemp.
1.142 fefe 114: Uwe Ohse reported all of the following bugs:
115: ttyname should return 0 if !isatty.
116: realpath returns NULL if "." cannot be opened
117: putenv erroneously accepted (and mishandled) entries without "=".
118: popen returned 255 instead of 127 if /bin/sh could not be run.
119: fgetc did not set the internal EOF indicator on EOF.
120: bsearch contained an assumption about integer arithmetic overflow
121: behavior.
122: system did not set SIGCHLD and thus contained a race.
123: popen did not set close-on-exec and could leak an fd on malloc error.
1.147 fefe 124: daemon did not check whether open returns an fd below 3
125: perror did not save errno.
1.144 olaf 126: Olaf: Peter Jones reported some problems with perror; strerror had the
127: same problem.
128: Peter also posted a patch to atexit/exit. With some modifications it is
129: now implemented.
1.145 fefe 130: Unbuffered stdio and ungetc can no longer be disabled. I will try to
131: implement part of it using ELF weak symbols.
1.146 fefe 132: Added minimal sysconf (tehe) from David Chappell.
1.148 fefe 133: Added overflow handling for strtoul and strtol.
1.149 fefe 134: Added WANT_ETC_HOSTS in dietfeatures.h and made gethostbyname/2 use
135: it before falling back to DNS if enabled.
1.150 fefe 136: Added a littie backwards compatibility cruft for gpm (man, do these
137: sources stink!)
1.151 fefe 138: Added openpty.
1.152 fefe 139: Squeeze a few bytes off the is* routines, courtesy of Peter Jones.
1.154 fefe 140: Fix fseek return value.
1.155 fefe 141: Add dirname and basename.
1.156 fefe 142: Add a few i386 math routines contributed by Frank Klemm.
1.157 fefe 143: Fixed getservent (did not allow _ and - in the aliases).
144: Thanks, Oden Eriksson
1.158 fefe 145: Added a float.h so configure believes we have ANSI header files.
146: Fix a lot more stdio bugs that Uwe Ohse pointed out.
1.162 fefe 147: Olaf: has added a new scanf and printf core that is suitable for all
1.159 olaf 148: scanf and printf function implementations
1.160 fefe 149: Imported a few more functions and optimizations from Frank Klemm (he
150: also rewrote dtostr to have more precision)
1.161 olaf 151: Olaf: checked in a new sig* function family (based on rt_sig*).
152: legacy <2.2 signal-handling doesn't work at the moment.
1.163 fefe 153: Made rudimentary iconv that can convert back and forth between
154: iso-8859-1, utf-8 and ucs-4 (for debugging).
155: Thanks to Markus Kuhn for the excellent utf-8(7)!
1.115 fefe 156:
1.74 fefe 157: 0.10:
158: update getpagesize.
159: add personality.
1.75 fefe 160: add "%*s" and "%*.*s" support to vsnprintf.
1.76 fefe 161: add putchar (apparently arm-linux-gcc will substitute printf("\n")
162: with putchar('\n') behind your back...?!
1.77 fefe 163: import include/scsi/ from glibc.
1.78 fefe 164: add iopl.
1.80 fefe 165: add execl and sigdelset prototypes.
166: add getopt_long stuff to getopt.h (may compile but won't link).
1.81 fefe 167: add RPC headers (no code yet).
1.82 fefe 168: add mlockall, munlockall
1.83 fefe 169: make "diet gcc foo.c" work.
170: added Sun RPC code and removed as many warnings as possible in a
171: heroic act of self-mutilation.
172: added getproto* and getdtablesize for the RPC cruft :-(
1.84 fefe 173: added getpass. mount from util-linux actually compiles now!
174: fix the sig*set routines. mount actually works now *bg*
175: fix fwrite dividing by zero when trying to fwrite n records of size 0.
1.85 fefe 176: added an initial regex implementation (3500 bytes!!!).
1.87 fefe 177: add llseek and lseek64 with optional lseek fall-back.
1.88 fefe 178: add res_init.
179: add asprintf (ugh, what an ugly function).
1.89 fefe 180: expanded arpa/nameser.h to include backwards compatibility defines
1.90 fefe 181: add ut_name alias to ut_host in struct utmp.
182: add inet_ntop, inet_pton, gethostbyname2.
1.92 fefe 183: add sysinfo, recvmsg, sendmsg.
1.93 fefe 184: add endmntent, getmntent, setmntent.
1.94 fefe 185: fix fnmatch (thanks, Guillaume Cottenceau!)
1.96 fefe 186: add setenv.
187: remove __restrict from mntent.h, add __restrict__ removal alias for
188: older gcc versions in sys/cdefs.h.
189: add rlim_t, sig_atomic_t declarations.
190: add sigsetjmp #define for __sigsetjmp (oops).
191: (Thanks to Chris Siebenmann for these three bug reports)
1.97 fefe 192: add a gruesome hack to printf floating point to accept %f and kludge
193: together support for %.2f. Don't look at the code, please!
1.98 fefe 194: fixed tcsetpgrp (oops, this is embarassing! Thanks, Chris Siebenmann)
1.99 fefe 195: imported fix for entlib by Jeff Garzik.
1.100 fefe 196: add glob implementation from Guillaume Cottenceau (Thanks!!)
197: add libdl fragments from Olaf (Yeah! One step closer to dynamic linking!)
1.101 fefe 198: add REG_ICASE and word start/end handling to my regular expressions.
199: my regular expressions now actually match substrings (i.e. "foobar" to "bar").
1.102 fefe 200: wrap getcwd to comply to man page (the syscall returns the number of
201: bytes, not the buffer)
202: add realpath.
1.103 fefe 203: fix vfprintf.
1.104 fefe 204: fix *scanf %s zero termination.
205: add abs, labs, llabs.
1.105 fefe 206: add <sys/io.h>, ioperm syscall.
207: add flock to <sys/file.h>
1.106 fefe 208: fixes to bsearch and the regular expressions.
1.107 fefe 209: add fake herror.
1.108 fefe 210: add scandir and alphasort.
1.109 fefe 211: add killpg
1.110 fefe 212: implemented a gross hack to make libpthread compile when
213: dietfeatures.h does not define WANT_THREAD_SAFE (it's empty then).
1.111 fefe 214: add getaddrinfo and freeaddrinfo (man, what a fucked up interface!)
1.112 fefe 215: fix sigsuspend (syscall had completely fscked up arguments!)
1.113 fefe 216: RLIM_INFINITY from the kernel is broken. Thanks to Chris Siebenmann
217: for sending a patch.
1.114 fefe 218: add getserv*.
219: add WANT_FULL_RESOLV_CONF so that the DNS routines use "domain" and
220: "search" from resolv.conf.
1.74 fefe 221:
1.73 fefe 222: 0.9:
1.65 fefe 223: fixed initgroups (oops)
1.66 fefe 224: Cleanup appending file open for stdio (thanks, James Antill)
225: imported vfprintf fix from James Antill.
1.67 fefe 226: add fnmatch
227: change index, rindex and bcmp as weak ELF symbols (were #defined before)
1.68 fefe 228: Olaf added character classes to *scanf.
1.69 fefe 229: Put object and library files into a separate directory (bin-$ARCH).
230: Add "cross" make target to make all architectures.
231: Add "diet" program and man page.
1.70 fefe 232: Add getgrnam, getgrgid
1.71 fefe 233: Add cfmakeraw (Thanks, Antonio Musumeci)
1.72 fefe 234: localtime won't call gettimeofday when the tzfile parser is used.
1.65 fefe 235:
1.64 fefe 236: 0.8:
1.34 fefe 237: vsnprintf(0,...) estimated the length of strings with a padding width
238: incorrectly.
1.35 fefe 239: new reboot() from Olaf.
1.36 fefe 240: added prototypes for getsockopt and setsockopt.
1.39 fefe 241: added experimental sem* and shm*
1.38 fefe 242: define EXIT_SUCCESS and EXIT_FAILURE
1.40 fefe 243: added setvbuf (only changes mode, not buffer)
1.41 fefe 244: added dietwarning.h (woohoo, linker warnings!) and used it to warn of
245: insecurity (system, sprintf) or bloat (printf and stdio).
1.42 fefe 246: added qsort() and bsearch(). Benchmark on 1000 random ints:
247: glibc: 679414 cycles qsort and 3352 cycles bsearch
248: diet libc: 300010 cycles qsort, 553 cycles bsearch
249: I have no idea why glibc is so slow.
1.43 fefe 250: added __isnan (references by libm.a from glibc).
251: added popen() and pclose(). Now the diet libc can link slsh (from
252: S-Lang!)
1.44 fefe 253: corrected usleep. It was more of an msleep until now.
1.45 fefe 254: corrected __dtostr (it looped when trying to format "0.0").
255: several fixes to stdio (thanks to S-Lang's excellent test suite!)
1.46 fefe 256: added ungetc (does it work?)
1.47 fefe 257: added inet_aton (yuck!)
1.50 fefe 258: added gethostbyname, gethostbyaddr, gethostbyname_r and gethostbyaddr_r
1.48 fefe 259: added h_errno and __h_errno_location
260: added inet_ntoa
1.49 fefe 261: added setpgrp and getpgrp, strsignal and execv (thanks, Olaf)
1.51 fefe 262: add bcopy, index, rindex macros
263: add isgraph and isxdigit
1.52 fefe 264: add strftime (ugh!!!)
1.53 olaf 265: Olaf fixed strftime, gmtime_r leap year bug.
1.54 fefe 266: Jeff Garzik contributed a spec file. I put it in contrib and hope
267: everbody knows what to do with it...
268: Olaf checked in a ton of libpthread stuff.
1.55 fefe 269: added mkstemp using /dev/urandom (harder to guess than getpid()).
1.56 fefe 270: add large file backwards compatibility support (so gzip will run on
271: kernel 2.2 and 2.0)
1.57 fefe 272: added shutdown
1.58 fefe 273: added nice
274: added pseudo-locale support for is* (they are now weak aliases,
275: isupper -> __isupper_ascii etc). So, for example, liblatin1 can
276: overwrite the default is* functions.
1.59 fefe 277: added liblatin1.a
1.60 fefe 278: added tzfile implementation (does it work for anyone else?)
1.61 fefe 279: added syslog(3) (thanks to Rene Müller!)
1.62 fefe 280: Jeff Garzik contributed getgr*, getpw* and getsp* in one tiny package.
281: Thanks!
1.63 fefe 282: merged duplicate code in execv and execvp into exec_lib.o
1.34 fefe 283:
1.21 fefe 284: 0.7.2:
285: added several prototypes to already implemented functions and
286: <sys/reboot.h>. Thanks for Abraham for pointing this out.
1.22 fefe 287: added prototypes for process group and dup syscalls. Thanks to
288: Abraham again. He also contributed an implementation for daemon(),
289: an ugly BSD hack. I decided to diversify the lib/ directory a
290: little and now created a libugly/ directory for stuff like system()
291: and daemon() ;-)
292: added libstdio and moved all that stdio crap from lib/ there. The
293: idea is to start separating now what we will separate for shared
294: libraries anyway.
1.26 fefe 295: optimized x86 unified-syscall by Olaf.
1.27 fefe 296: added limits.h, removed __ARCHBITS from endian.h (use __WORDSIZE from
297: limits.h instead)
298: added remove.c and enough cruft to limits.h to make it compile lzo,
299: lzop and bzip2.
1.28 fefe 300: added mktime, asctime_r, asctime and ctime (needed for gzip).
301: Someone will need to implement a reader for the glibc localtime file
1.31 fefe 302: format some day (man tzfile, ugh!) :-(
1.29 fefe 303: added unlink prototype to unistd.h.
304: added gmtime and gmtime_r.
1.31 fefe 305: fixed sparc unified syscall error handling (please upgrade!).
1.30 fefe 306: removed readdir glibc compatibility cruft.
1.31 fefe 307: removed stat glibc compatibility cruft.
1.32 fefe 308: oops, my fread was broken for pipes.
1.33 fefe 309: Olaf found a bug in pipe() for sparc, too.
1.21 fefe 310:
1.9 fefe 311: 0.7.1:
1.11 fefe 312: optimized away the static arrays from __ltostr and __lltostr.
313: optimized away the static arrays (and more!) from strtoul and strtoull.
314: added system (by Olaf).
1.12 fefe 315: added tolower and toupper
1.13 fefe 316: added getopt from Olaf (~600 bytes on x86!)
1.14 fefe 317: added clone for mips (by Olaf).
318: fixed longjmp and setjmp on sparc not to require glibc include files.
1.15 olaf 319: added pause for all (by Olaf).
1.17 fefe 320: added __attribute__ ((__const__)) to ctype.h
1.16 fefe 321: added isupper and islower.
322: added putc and putchar as macros.
1.17 fefe 323: added strcasecmp and strncasecmp (thanks to Abraham vd Merwe for
324: insightful discussions and patches I partially used for the last three)
1.18 fefe 325: added getpriority and setpriority (also by Abraham)
1.19 fefe 326: oops, I broke strtoul in a recent optimization attempt.
1.20 fefe 327: oi, setjmp and longjmp were broken on other platforms, too!
328: Thanks to Sébastien Côté for reporting this.
1.9 fefe 329:
330: 0.7:
1.6 olaf 331: clone support for i386,alpha,arm and sparc by Olaf.
1.1 cvs 332: Initial dynamic loading glue for i386, also by Olaf.
333: We don't have a dynamic loader yet, so this is not yet usable.
334: added readv, sigdelset, sigaltstack, sigfillset, sigismember, usleep,
335: vsprintf, writev, all by Olaf.
1.2 fefe 336: imported readdir fix from Guillaume. Mhh, can the kernel interface
337: really be this broken?
1.3 fefe 338: Found a kludgy way to detect whether the kernel includes define struct
339: stat64 (they also define STAT64_HAS_BROKEN_ST_INO). If this does
340: not work for you, please tell me!
1.4 fefe 341: Removed bogus __seek_types enum, it's a bunch of #defines now.
1.7 fefe 342: Fixed stdio line buffering. The code was already there but I forgot
343: to mark stdio and stdout as line buffered. This should really be
344: done dynamically using isatty, though.
1.8 fefe 345: Removed superfluous "if (1)" in execvp.c
1.1 cvs 346:
347: 0.6.14:
348: *scanf did not append the 0 byte for %s.
349: added creat and changed creat to call open directly instead of open64.
350: did for fread what 0.6.10 did for fwrite.
351: repaired buffered stdio a little (line buffering is still not
352: supported).
353: [All of these bugs have been reported by Guillaume. Thanks!]
354: added __pure__ to strchr and strrchr in <string.h>
355:
356: 0.6.13:
357: included COPYING to make clear that the diet libc is covered by the
358: GNU General Public License (and _not_ the LGPL). That means that
359: you need to obtain a license from me if you want to use the diet
360: libc in a proprietary program that you want to distribute.
361: The x86 unified syscall swapped arguments #4 and #5 and noone
362: noticed until now! Thanks to Guillaume Cottenceau for reporting
363: this!
364: The malloc had a subtle bug with small allocations that could cause
365: segfault. Guillaume reported it, Olaf fixed it.
366:
367: 0.6.12:
368: added assert, statfs and fstatfs
369: added include/net/if.h so fget compiles again.
370:
371: 0.6.11:
372: added putenv.
373:
374: 0.6.10:
375: fixed fwrite. It returned the number of bytes written, not the number
376: of records. Thanks to Albert D. Cahalan for pointing this out.
377: fixed fgets. It returned EOF on empty lines. Thanks, Erik Frey.
378: added brk and sbrk. harold@nb.com.sg made me do it.
379:
380: 0.6.9:
381: fixed execvp not to return on ENOENT
382: did for {open|read|close|seek|tell}dir what I did for stat before.
383: The glibc compatibility part is currently non-functional.
384: fixed white space handling in sscanf " (" would not match " (".
385: fixed printf to accept 'l' flag.
386: fixed getpwuid (ignored last line)
387:
388: 0.6.8:
389: Olaf contributed initial thread-safe syscalls for i386, alpha, sparc,
390: mips and arm. I did the one for ppc. They can be enabled in dietfeatures.h.
391: added strlcpy and strlcat from OpenBSD.
392: added stat64, fstat64 and lstat64.
393: added endian.h and made ending of strlen.c endianness-aware
394: added string routines size tweak to dietfeatures.h. Most of the
395: string routines have been unrolled. This is up to three times as
396: fast but creates up to three times larger code. Now you can disable
397: the unrolling.
398: added sendfile.
399: I also added pread. It works on x86 and sparc but not on ppc and mips.
400: I have no idea what's going on. strace disagrees with the kernel.
401: Can anyone help? I asked the Linux kernel mailing list for help, too.
402: added a few aliases of the type __libc_open for open. nm on
403: libpthreads.so indicates that we will need them.
404:
405: 0.6.7:
406: the sources now compile without warnings with -Wall.
407: printf now prints "(null)" when %s is passed NULL. This can be
408: removed with WANT_NULL_PRINTF in dietfeatures.h
409: added vfprintf, execl, ttyname.
410: stat, lstat and fstat are now #defined to __dietstat, __dietlstat and
411: __dietfstat so they can use the normal kernel struct stat.
412: stat, lstat and fstat are now C wrappers that convert to the glibc
413: struct stat. So we can avoid that overhead for programs that use
414: dietlibc headers.
415:
416: 0.6.6:
417: changed the Makefiles so you can now set CFLAGS on the command line
418: added memccmp (analogous to memccpy) and strncmp.
419: Olaf fixed another bug in the sparc unified syscall.
420: Paul Clifford contributed a C version of his strlen.S that is much
421: more efficient than the previous strlen on all platforms! It also
422: looks like technology from Roswell. ;-}
423: added a "real" stdio. Well, almost. Please contribute!
424: added dietfeatures.h so you can remove features you don't need.
425: removed debug code from vsnprintf that changed \0 to ' ' (argh!).
426: stdio now works with simple programs and minigzip from libz.
427: stdio uses some major trickery to avoid linking the stdio, stderr and
428: stdout (and reserving space for them) when they are not used.
429:
430: 0.6.5:
431: Red Plait <redplait@ixcelerator.com> found several bugs in diet libc,
432: most of them bugs in the new header files, but also missing sigset
433: functions.
434: Paul Clifford contributed an assembly strlen.S for ARM and fixed
435: several bugs.
436: Fixed ppc/setjmp and mips/pipe.
437: Olaf contributed a new sparc unified syscall.
438:
439: 0.6.4:
440: declared is* static inline in getservent.
441: added assert_fail, strtoul, isalpha, isdigit, isalnum, isascii.
442: changed strlen to return 0 when passed NULL.
443: new, much smaller unified syscall for MIPS. Thanks to Olaf the Mad
444: Scientist who actually implemented this without access to a MIPS
445: box, just from reading the architecture manual. And it worked out
446: of the box.
447: started a set of system includes, mainly so that I can use lcc and
448: my alpha-linux cross compiler (which is unable to cross-compile
449: glibc). diet libc can now be compiled without any include files
450: from a normal libc. The includes do declare more than diet libc
451: currently delivers and they are still far from complete for real
452: applications.
453: I will only add assembly versions that are smaller _and_ faster than
454: the C version. Larger routines are only accepted if they are called
455: very often and are substantially faster.
456: added i386 assembly strchr, which is smaller and faster than the old
457: version. It is, however, larger than the version contributed by
458: proton (thanks, anyway).
459: added i386 strlen (31% faster, 14% smaller)
460: "make t" will now create a map file called "mapfile".
461:
462: 0.6.3:
463: added sys_errlist, strerror and perror
464: added isblank
465: added atol
466:
467: 0.6.2:
468: mmap for ARM didn't compile. Thanks, Paul!
469:
470: 0.6.1:
471: split mmap into the architecture specific subdirectories.
472: getenv now copes with environ==NULL, thanks Paul Clifford.
473: Paul also contributed a smaller ARM startup code.
474:
475: 0.6:
476: strcat returned the wrong result. Thanks, Dietz Pröpper.
477: strtod now understands a negative exponent (oops, thanks Bertram Barth)
478: Port to arm-linux-gnu, but on the Netwinder I use for testing the
479: __dtostr does not work (I have no idea why!)
480: The MIPS port now uses (much smaller) non-PIC code. That means that
481: the applications you link against diet libc also have to be compiled
482: non-PIC. I suggest copying the CFLAGS from the diet libc Makefile.
483: Thanks to Ralf Bächle for helping me with this!
484: I made subdirectories for the architectures and use VPATH to override
485: VPATH so that make finds the source file automatically. That should
486: simplify the sources greatly.
487: Olaf Dreesen contributed Alpha support including setjmp and longjmp!
488: ARM and MIPS now also have setjmp and longjmp
489: "compile" and "load" are now make targets. Use them for djb programs.
490: added contrib/elftrunc.c which will remove unnecessary ELF headers.
491: Again, contributed from Olaf. Great work!
492:
493: 0.5.12:
494: printf also does signed numbers.
495: If you don't use atexit, dietlibc now does not link exit, only _exit.
496: *printf now correctly returns the number of bytes written.
497: Olaf contributed experimental sscanf and vsscanf implementations.
498: If passed NULL as buffer, snprintf will not write anything but still
499: return the number of bytes it would have written.
500: Initial MIPS port! (Oh, the agony!)
501: No setjmp and longjmp support yet! Please contribute!
502: I even implemented unified syscalls for MIPS. Still, MIPS code is
503: almost twice the size of SPARC code. If anyone knows why: please
504: tell me!
505:
506: 0.5.11:
507: I implemented new unified syscalls for x86, sparc and ppc, this time based
508: on .s files and not .c files, and I moved the syscalls into
509: subdirectores to clean the dietlibc sources up a little.
510: A binary consisting of printf("%s is %d\n","olaf",23) is now
511: 2864 bytes on sparc
512: 2488 bytes on intel
513: I kludgily implemented fprintf(stdout,... and fprintf(stderr,...
514: to make a few more applications work.
515: Olaf Dreesen also implemented some unified syscall stuff for x86.
516: He discovered that with our unified syscall interface it actually
517: costs <10 bytes total to make all system calls thread safe!
518: I implemented atexit() (can register up to 4 callbacks).
519: I implemented strtod and __dtostr (the opposite). Now we can add
520: floating point support to vsnprintf and sscanf!
521:
522: 0.5.10:
523: I actually saw that I can not only merge the errno handling code of
524: the system calls on x86, I can also merge the rest (including the
525: arguments) except for setting the system call number. All those
526: system calls are now just a jump to a unified system call handler.
527: I got rid of x86openclose again. The savings are substantial:
528: chown from embutils went from 7664 to 7184 bytes!
529: If I'd move the system call wrappers to assembly language, I could
530: even reduce the alignment (does not matter since it's just a jump
531: anyway) and get rid of the "ret" behind each jump (one byte per
532: system call!)
533:
534: 0.5.9:
535: added memchr, strpbrk, strstr, strtol, isspace (hehe)
536: fixed strdup
537: fixed return values for strcpy and strcat (thanks to Norbert Berzen)
538: Olaf Dreesen contributed a strtol and initial {sn|vsn|}printf implementation
539: (no signed integers, only strings and unsigned integers (but
540: supporting octal, hex and decimal). Thanks, Olaf! (by the way:
541: that code must be wonderful, I don't understand it at all *bg*)
542: Olaf's printf does understand padding like in "%08d" and "%8d" and
543: automatically pads pointers with '0'.
544: Rewrote the x86 start code, old: 22 instructions, new: 12 instructions.
545: Thanks to proton for inspiration on this.
546: The new x86 start code also does not reference exit any more, thus saving
547: 64 bytes for executables that don't call exit explicitly.
548: [insert maniacal laughter] EVERY BYTE COUNTS!1!! ;-)
549: Moved errno and environ to start.S, saving no byte binary size but
550: speeding up compilation and slightly shortening dietlibc.a ;-)
551: For x86: joined open and close into one assembler file, sharing the
552: errno handling. This is a feasibility test and it actually saves a
553: few bytes. I think I will reimplement the _syscall[1-6] macros on
554: all platforms now to share the errno handling code for them.
555:
556: 0.5.8:
557: fixed strchr to be able to look for 0.
558:
559: added _llseek, ftruncate, getpgid, getresgid, getresuid, getsid,
560: memccpy, memmove, mprotect, setregid, setresgid, setresuid, setreuid,
561: strncpy, swapon, truncate, strtok, strtok_r, strspn, strcspn (all
562: contributed by Olaf Dreesen)
563:
564: added execvp, getcwd
565:
566: fixed __xmknod
567:
568: Note: can it be that the ftw interface really is so broken that I
569: cannot implement it without having to implement some searching data
570: structure? I included an experimental ftw implementation that will
571: not follow symlinks.
572:
573: 0.5.7:
574: oops, if_nametoindex was broken!
575:
576: 0.5.6:
577: ported to ppc-linux.
578: fixed i386 sigsetjmp (I mistyped the function name)
579: included sigjmp.c
580:
581: 0.5.5:
582: added wait, sys_siglist, longjmp/setjmp/sigsetjmp for i386 and sparc
583: actually, it wasn't fork that wasn't working for sparc, it was pipe.
584: I fixed it now.
585: dietlibc/SPARC assumes -msupersparc (does not provide div, mul, etc)
586: fixed readdir to use getdents and not the intel inline asm
587:
588: 0.5.4:
589: ported to sparclinux (sparc32 only). Beware: does not work yet.
590: added raise, abort, readlink, strcat, geteuid, geteuid, wait3, access
591:
592: 0.5.3:
593: added tcsetattr and getenv to compile e3
594:
595: 0.5.2:
596: added vhangup, tcgetattr, isatty and memcmp for fgetty
597: (http://www.fefe.de/fgetty/)
598: added localtime from uC-libc.
599:
600: 0.5.1:
601: stat and friends actually work now. Yuck! Another case of
602: translation between kernel and userland. Why can't the kernel
603: people and the libc people simply agree on a standard?
604: removed many unnecessary includes to speed up compilation.
605: added -fomit-frame-pointer and i386 compilation target to reduce code size.
606: inlined socketcall to reduce code size.
607: "load" and "compile" are examples for djb code.
608:
609: 0.5:
610: Olaf Dreesen contributed a much smaller implementation of malloc and friends.
611: each object file is now treated with "strip -x -R .note -R .comment"
612: split each system call into a separate object file
613: added ntohs, htons, alarm, if_indextoname and if_nametoindex
614:
615: 0.4.1:
616: oops, the strchr implementation was wrong. Thanks Jens Laas!
617:
618: 0.4:
619: copied opendir and friends from uC-libc.
620: added getservent and getservby* in gerservent.c
621:
622: 0.3:
623: remove readdir system call
624: added getdents system call
625: added getpwnam/getpwuid implementation in getpwnam.c
626: added a few string functions (in str*.c)
627:
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