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