Annotation of dietlibc/CHANGES, revision 1.210
1.209 fefe 1: 0.14:
1.210 ! fefe 2: a new i386/atol.S that is 4 bytes smaller (and faster, too!). Thanks,
! 3: Thomas Ogrisegg!
! 4: Thomas also contributed a PA-RISC port including testandset and clone,
! 5: so libpthread should also work! Great work, Thomas.
1.209 fefe 6:
1.193 fefe 7: 0.13:
1.194 fefe 8: add readdir64 and automatic mapping if _FILE_OFFSET_BITS == 64
1.199 fefe 9: make diet not include the linker safeguard stuff when preprocessing
1.207 fefe 10: Olaf: port to S/390!
1.196 leitner 11: me: fix vfork (it was put into dietlibc.a twice)
1.197 leitner 12: res_query did not initialize last
1.199 fefe 13: diet (not diet-dyn, of course) now adds -static to the gcc command line
1.198 leitner 14: fixed fflush on input streams (tic from ncurses exposed this)
1.199 fefe 15: duh, there is an alarm system call, too, so we use it and not setitimer
1.200 fefe 16: fix comparison in gmtime_r that caused Jan 1 to be converted to Dec 32.
1.201 fefe 17: rewrote __dtostr (it also has one more argument now)
1.205 fefe 18: Thanks to Erik Troan for bringing these to my attention:
1.204 fefe 19: make putenv behave like glibc (putenv("HOME") == unsetenv("HOME"))
20: fix strncat for the case where n == 0 (security implications?)
21: fix bsearch (it didn't find the very last element in the array, same
22: bug in both the C and the i386 assembly version).
1.205 fefe 23: fixed FNM_PATHNAME in fnmatch
1.204 fefe 24: fix brk (the syscall was documented incorrectly in the Linux man page)
25: Thanks, Thomas Ogrisegg!
1.205 fefe 26: added negated character classes to fnmatch (not required by POSIX)
1.206 fefe 27: make the utmp routines open utmp read-only if read-write doesn't work.
1.208 fefe 28: remove syscalls.c directory, it is obsolete now with unified syscalls
1.193 fefe 29:
1.164 fefe 30: 0.12:
31: more contributions from Frank Klemm.
1.165 fefe 32: iconv can now do UCS-2, too.
1.167 fefe 33: Imported several x86 assembly routines from Wouter van Kleunen.
1.166 fefe 34: Lots of bug fixes, and several more i386 specific versions of common
35: routines to make them smaller.
1.168 fefe 36: add memmem (a GNU extension that looks useful)
1.170 fefe 37: several changes from Michal Ludvig: inttypes.h gets C99 macros,
1.168 fefe 38: add pivot_root syscall, %n for *scanf.
1.169 fefe 39: add adjtimex (thanks, Laurent BERCOT)
1.171 fefe 40: add Frank Klemm's optimized md5
1.172 fefe 41: add -Os option to diet (see diet.1).
1.173 fefe 42: several IPv6 constants and HZ were missing, thanks Johannes Kloos.
1.174 fefe 43: add 32-bit uid/gid syscalls.
1.175 fefe 44: add rand48 (thanks, Johannes Kloos)
1.176 fefe 45: fixed a lot of bugs in getopt* (thanks, Johannes)
1.177 fefe 46: add strxfrm and tweak limits.h. glib-1.3.8 now compiles without changes.
47: add a few more module syscalls. modutils-2.4.9 now compiles without changes.
48: fix gethostent alias list termination. Major oops.
1.178 fefe 49: add execle and two DNS constants (from Johannes Kloos).
1.179 fefe 50: opendir did not close-on-exec (thanks, Laurent Bercot).
1.180 fefe 51: DNS will now properly signal errors and set h_errno.
52: A few more cleanups (thanks, Andreas Jabs and Matthias Andree).
1.181 fefe 53: Added an uber-cool linker safeguard feature! Idea by Matthias Andree.
54: If you enable WANT_SAFEGUARD in dietfeatures.h, diet will include an
55: external reference to a symbol that is only in the diet libc. So,
56: when you accidentally link a diet libc compiled object file against
57: glibc, the linker will barf. This will bloat your object files, but
58: you can remove all the references with "strip -R .note" from
59: the binaries in the end (which you should do anyway).
1.182 fefe 60: fix ARM unified syscall (select did not work).
1.183 fefe 61: add getpwent_r ala glibc and replace getpwent
62: do the same for getgrent and getspent
63: remove entlib (new code is smaller)
1.184 fefe 64: rewrite getserv* to use parselib (and provide ..._r, too)
1.185 fefe 65: add getpwnam_r and getpwuid_r
1.186 fefe 66: rewrite getproto* to use parselib (and protive ..._r, too)
1.187 fefe 67: Olaf muddled with the dynamic linker. It's a clean-room
68: implementation in the sense that it once worked for Olaf in a clean
69: room ;)
1.188 fefe 70: add if_nameindex and if_freenameindex.
71: fixed arm unified syscalls to work with current binutils (; is no
72: longer a line separator but starts a comment, switched to .macro)
1.189 fefe 73: changed all st_[cma]time types to signed long so comparisons against
74: LONG_MIN will work correctly. (GNU tar does this)
1.190 fefe 75: fixed two bugs regarding ungetc.
76: add getusershell, setusershell, endusershell (for vs_ftpd)
77: add prctl, dirfd (also for vs_ftpd)
1.191 fefe 78: fixed strftime (was completely hosed)
1.192 fefe 79: added real make install target
1.164 fefe 80:
1.115 fefe 81: 0.11:
82: fix major oops in DNS routines (only with WANT_FULL_RESOLV_CONF enabled).
1.116 fefe 83: fix vsscanf bug (Thanks, David Chappell).
1.117 fefe 84: add floor, ceil and memchr prototypes.
85: add __builtin_expect and expect #defines for gcc versions below 3.0
1.118 fefe 86: cleaner errno vs __errno_location handling
87: add placeholder iconv (iconv_open will always return EINVAL)
88: try to remove kernel 2.4 header dependency in IPv6 sockaddr_in6
89: initialization of getaddrinfo.
1.119 fefe 90: fix vsnprintf %X (printed lower case)
1.120 fefe 91: I wrote a new getopt. It appears to actually work (it is POSIX
92: compliant, it does not sort argv like the GNU version) and is only
93: a little over 300 bytes on x86.
1.121 fefe 94: Guillaume Cottenceau just wrote me that strncat should be even more
95: broken than it already is: it should append n bytes AND THEN \0!
96: I wonder how many programmers have produces off-by-one errors here...
1.122 fefe 97: Fix regexec offset return. autoconf now believes that diet libc has
98: POSIX regular expressions.
1.123 fefe 99: Fix fnmatch (a/b/* matched a/b/c/d even if FNM_PATHNAME was set)
1.124 fefe 100: Fix regular expression match for x* when there is no x at all.
1.125 fefe 101: Fix memory leak in error case in gethostbyname(2|). Thanks, Dietz Pröpper.
1.126 fefe 102: Add %h to vsnprintf.
1.127 fefe 103: Add FAQ.
1.128 fefe 104: Make %h work for signed numbers and add %hh to vsnprintf.
105: initgroups ignored the group argument :-(
106: remove printf references and nested functions from glob.
1.129 fefe 107: added an errno in libpthread that will display a prominent linker
108: warning.
1.131 fefe 109: started getting rid of kernel headers. Big task! :-(
1.130 fefe 110: add res_mkquery. The diet libc can now compile and link mtr.
1.132 olaf 111: Olaf: added a lot of code in libdl (not yet complete), changed the
112: startup code to make it work with his libdl and ld.so (needs still work
113: too)
1.134 fefe 114: __dns_readstartfiles only took the first domain or search path.
115: Thanks, Anthony de Boer
1.133 olaf 116: Olaf: added clone and a new unified_syscall for PowerPC
117: also dynlinker is now available (i386 only at this time)
1.135 fefe 118: crufted together a stdarg.h implementation from the various gcc headers.
1.136 fefe 119: implement getopt_long (ugh, the GNU people need professional help)
1.137 fefe 120: fixed word delimiters in regex (they looked for space, i.e. "," did
121: not work as delimiter)
1.138 fefe 122: errno.h now declares sys_errlist and sys_nerr.
1.143 fefe 123: added mkdtemp.
1.142 fefe 124: Uwe Ohse reported all of the following bugs:
125: ttyname should return 0 if !isatty.
126: realpath returns NULL if "." cannot be opened
127: putenv erroneously accepted (and mishandled) entries without "=".
128: popen returned 255 instead of 127 if /bin/sh could not be run.
129: fgetc did not set the internal EOF indicator on EOF.
130: bsearch contained an assumption about integer arithmetic overflow
131: behavior.
132: system did not set SIGCHLD and thus contained a race.
133: popen did not set close-on-exec and could leak an fd on malloc error.
1.147 fefe 134: daemon did not check whether open returns an fd below 3
135: perror did not save errno.
1.144 olaf 136: Olaf: Peter Jones reported some problems with perror; strerror had the
137: same problem.
138: Peter also posted a patch to atexit/exit. With some modifications it is
139: now implemented.
1.145 fefe 140: Unbuffered stdio and ungetc can no longer be disabled. I will try to
141: implement part of it using ELF weak symbols.
1.146 fefe 142: Added minimal sysconf (tehe) from David Chappell.
1.148 fefe 143: Added overflow handling for strtoul and strtol.
1.149 fefe 144: Added WANT_ETC_HOSTS in dietfeatures.h and made gethostbyname/2 use
145: it before falling back to DNS if enabled.
1.150 fefe 146: Added a littie backwards compatibility cruft for gpm (man, do these
147: sources stink!)
1.151 fefe 148: Added openpty.
1.152 fefe 149: Squeeze a few bytes off the is* routines, courtesy of Peter Jones.
1.154 fefe 150: Fix fseek return value.
1.155 fefe 151: Add dirname and basename.
1.156 fefe 152: Add a few i386 math routines contributed by Frank Klemm.
1.157 fefe 153: Fixed getservent (did not allow _ and - in the aliases).
154: Thanks, Oden Eriksson
1.158 fefe 155: Added a float.h so configure believes we have ANSI header files.
156: Fix a lot more stdio bugs that Uwe Ohse pointed out.
1.162 fefe 157: Olaf: has added a new scanf and printf core that is suitable for all
1.159 olaf 158: scanf and printf function implementations
1.160 fefe 159: Imported a few more functions and optimizations from Frank Klemm (he
160: also rewrote dtostr to have more precision)
1.161 olaf 161: Olaf: checked in a new sig* function family (based on rt_sig*).
162: legacy <2.2 signal-handling doesn't work at the moment.
1.163 fefe 163: Made rudimentary iconv that can convert back and forth between
164: iso-8859-1, utf-8 and ucs-4 (for debugging).
165: Thanks to Markus Kuhn for the excellent utf-8(7)!
1.115 fefe 166:
1.74 fefe 167: 0.10:
168: update getpagesize.
169: add personality.
1.75 fefe 170: add "%*s" and "%*.*s" support to vsnprintf.
1.76 fefe 171: add putchar (apparently arm-linux-gcc will substitute printf("\n")
172: with putchar('\n') behind your back...?!
1.77 fefe 173: import include/scsi/ from glibc.
1.78 fefe 174: add iopl.
1.80 fefe 175: add execl and sigdelset prototypes.
176: add getopt_long stuff to getopt.h (may compile but won't link).
1.81 fefe 177: add RPC headers (no code yet).
1.82 fefe 178: add mlockall, munlockall
1.83 fefe 179: make "diet gcc foo.c" work.
180: added Sun RPC code and removed as many warnings as possible in a
181: heroic act of self-mutilation.
182: added getproto* and getdtablesize for the RPC cruft :-(
1.84 fefe 183: added getpass. mount from util-linux actually compiles now!
184: fix the sig*set routines. mount actually works now *bg*
185: fix fwrite dividing by zero when trying to fwrite n records of size 0.
1.85 fefe 186: added an initial regex implementation (3500 bytes!!!).
1.87 fefe 187: add llseek and lseek64 with optional lseek fall-back.
1.88 fefe 188: add res_init.
189: add asprintf (ugh, what an ugly function).
1.89 fefe 190: expanded arpa/nameser.h to include backwards compatibility defines
1.90 fefe 191: add ut_name alias to ut_host in struct utmp.
192: add inet_ntop, inet_pton, gethostbyname2.
1.92 fefe 193: add sysinfo, recvmsg, sendmsg.
1.93 fefe 194: add endmntent, getmntent, setmntent.
1.94 fefe 195: fix fnmatch (thanks, Guillaume Cottenceau!)
1.96 fefe 196: add setenv.
197: remove __restrict from mntent.h, add __restrict__ removal alias for
198: older gcc versions in sys/cdefs.h.
199: add rlim_t, sig_atomic_t declarations.
200: add sigsetjmp #define for __sigsetjmp (oops).
201: (Thanks to Chris Siebenmann for these three bug reports)
1.97 fefe 202: add a gruesome hack to printf floating point to accept %f and kludge
203: together support for %.2f. Don't look at the code, please!
1.98 fefe 204: fixed tcsetpgrp (oops, this is embarassing! Thanks, Chris Siebenmann)
1.99 fefe 205: imported fix for entlib by Jeff Garzik.
1.100 fefe 206: add glob implementation from Guillaume Cottenceau (Thanks!!)
207: add libdl fragments from Olaf (Yeah! One step closer to dynamic linking!)
1.101 fefe 208: add REG_ICASE and word start/end handling to my regular expressions.
209: my regular expressions now actually match substrings (i.e. "foobar" to "bar").
1.102 fefe 210: wrap getcwd to comply to man page (the syscall returns the number of
211: bytes, not the buffer)
212: add realpath.
1.103 fefe 213: fix vfprintf.
1.104 fefe 214: fix *scanf %s zero termination.
215: add abs, labs, llabs.
1.105 fefe 216: add <sys/io.h>, ioperm syscall.
217: add flock to <sys/file.h>
1.106 fefe 218: fixes to bsearch and the regular expressions.
1.107 fefe 219: add fake herror.
1.108 fefe 220: add scandir and alphasort.
1.109 fefe 221: add killpg
1.110 fefe 222: implemented a gross hack to make libpthread compile when
223: dietfeatures.h does not define WANT_THREAD_SAFE (it's empty then).
1.111 fefe 224: add getaddrinfo and freeaddrinfo (man, what a fucked up interface!)
1.112 fefe 225: fix sigsuspend (syscall had completely fscked up arguments!)
1.113 fefe 226: RLIM_INFINITY from the kernel is broken. Thanks to Chris Siebenmann
227: for sending a patch.
1.114 fefe 228: add getserv*.
229: add WANT_FULL_RESOLV_CONF so that the DNS routines use "domain" and
230: "search" from resolv.conf.
1.74 fefe 231:
1.73 fefe 232: 0.9:
1.65 fefe 233: fixed initgroups (oops)
1.66 fefe 234: Cleanup appending file open for stdio (thanks, James Antill)
235: imported vfprintf fix from James Antill.
1.67 fefe 236: add fnmatch
237: change index, rindex and bcmp as weak ELF symbols (were #defined before)
1.68 fefe 238: Olaf added character classes to *scanf.
1.69 fefe 239: Put object and library files into a separate directory (bin-$ARCH).
240: Add "cross" make target to make all architectures.
241: Add "diet" program and man page.
1.70 fefe 242: Add getgrnam, getgrgid
1.71 fefe 243: Add cfmakeraw (Thanks, Antonio Musumeci)
1.72 fefe 244: localtime won't call gettimeofday when the tzfile parser is used.
1.65 fefe 245:
1.64 fefe 246: 0.8:
1.34 fefe 247: vsnprintf(0,...) estimated the length of strings with a padding width
248: incorrectly.
1.35 fefe 249: new reboot() from Olaf.
1.36 fefe 250: added prototypes for getsockopt and setsockopt.
1.39 fefe 251: added experimental sem* and shm*
1.38 fefe 252: define EXIT_SUCCESS and EXIT_FAILURE
1.40 fefe 253: added setvbuf (only changes mode, not buffer)
1.41 fefe 254: added dietwarning.h (woohoo, linker warnings!) and used it to warn of
255: insecurity (system, sprintf) or bloat (printf and stdio).
1.42 fefe 256: added qsort() and bsearch(). Benchmark on 1000 random ints:
257: glibc: 679414 cycles qsort and 3352 cycles bsearch
258: diet libc: 300010 cycles qsort, 553 cycles bsearch
259: I have no idea why glibc is so slow.
1.43 fefe 260: added __isnan (references by libm.a from glibc).
261: added popen() and pclose(). Now the diet libc can link slsh (from
262: S-Lang!)
1.44 fefe 263: corrected usleep. It was more of an msleep until now.
1.45 fefe 264: corrected __dtostr (it looped when trying to format "0.0").
265: several fixes to stdio (thanks to S-Lang's excellent test suite!)
1.46 fefe 266: added ungetc (does it work?)
1.47 fefe 267: added inet_aton (yuck!)
1.50 fefe 268: added gethostbyname, gethostbyaddr, gethostbyname_r and gethostbyaddr_r
1.48 fefe 269: added h_errno and __h_errno_location
270: added inet_ntoa
1.49 fefe 271: added setpgrp and getpgrp, strsignal and execv (thanks, Olaf)
1.51 fefe 272: add bcopy, index, rindex macros
273: add isgraph and isxdigit
1.52 fefe 274: add strftime (ugh!!!)
1.53 olaf 275: Olaf fixed strftime, gmtime_r leap year bug.
1.54 fefe 276: Jeff Garzik contributed a spec file. I put it in contrib and hope
277: everbody knows what to do with it...
278: Olaf checked in a ton of libpthread stuff.
1.55 fefe 279: added mkstemp using /dev/urandom (harder to guess than getpid()).
1.56 fefe 280: add large file backwards compatibility support (so gzip will run on
281: kernel 2.2 and 2.0)
1.57 fefe 282: added shutdown
1.58 fefe 283: added nice
284: added pseudo-locale support for is* (they are now weak aliases,
285: isupper -> __isupper_ascii etc). So, for example, liblatin1 can
286: overwrite the default is* functions.
1.59 fefe 287: added liblatin1.a
1.60 fefe 288: added tzfile implementation (does it work for anyone else?)
1.61 fefe 289: added syslog(3) (thanks to Rene Müller!)
1.62 fefe 290: Jeff Garzik contributed getgr*, getpw* and getsp* in one tiny package.
291: Thanks!
1.63 fefe 292: merged duplicate code in execv and execvp into exec_lib.o
1.34 fefe 293:
1.21 fefe 294: 0.7.2:
295: added several prototypes to already implemented functions and
296: <sys/reboot.h>. Thanks for Abraham for pointing this out.
1.22 fefe 297: added prototypes for process group and dup syscalls. Thanks to
298: Abraham again. He also contributed an implementation for daemon(),
299: an ugly BSD hack. I decided to diversify the lib/ directory a
300: little and now created a libugly/ directory for stuff like system()
301: and daemon() ;-)
302: added libstdio and moved all that stdio crap from lib/ there. The
303: idea is to start separating now what we will separate for shared
304: libraries anyway.
1.26 fefe 305: optimized x86 unified-syscall by Olaf.
1.27 fefe 306: added limits.h, removed __ARCHBITS from endian.h (use __WORDSIZE from
307: limits.h instead)
308: added remove.c and enough cruft to limits.h to make it compile lzo,
309: lzop and bzip2.
1.28 fefe 310: added mktime, asctime_r, asctime and ctime (needed for gzip).
311: Someone will need to implement a reader for the glibc localtime file
1.31 fefe 312: format some day (man tzfile, ugh!) :-(
1.29 fefe 313: added unlink prototype to unistd.h.
314: added gmtime and gmtime_r.
1.31 fefe 315: fixed sparc unified syscall error handling (please upgrade!).
1.30 fefe 316: removed readdir glibc compatibility cruft.
1.31 fefe 317: removed stat glibc compatibility cruft.
1.32 fefe 318: oops, my fread was broken for pipes.
1.33 fefe 319: Olaf found a bug in pipe() for sparc, too.
1.21 fefe 320:
1.9 fefe 321: 0.7.1:
1.11 fefe 322: optimized away the static arrays from __ltostr and __lltostr.
323: optimized away the static arrays (and more!) from strtoul and strtoull.
324: added system (by Olaf).
1.12 fefe 325: added tolower and toupper
1.13 fefe 326: added getopt from Olaf (~600 bytes on x86!)
1.14 fefe 327: added clone for mips (by Olaf).
328: fixed longjmp and setjmp on sparc not to require glibc include files.
1.15 olaf 329: added pause for all (by Olaf).
1.17 fefe 330: added __attribute__ ((__const__)) to ctype.h
1.16 fefe 331: added isupper and islower.
332: added putc and putchar as macros.
1.17 fefe 333: added strcasecmp and strncasecmp (thanks to Abraham vd Merwe for
334: insightful discussions and patches I partially used for the last three)
1.18 fefe 335: added getpriority and setpriority (also by Abraham)
1.19 fefe 336: oops, I broke strtoul in a recent optimization attempt.
1.20 fefe 337: oi, setjmp and longjmp were broken on other platforms, too!
338: Thanks to Sébastien Côté for reporting this.
1.9 fefe 339:
340: 0.7:
1.6 olaf 341: clone support for i386,alpha,arm and sparc by Olaf.
1.1 cvs 342: Initial dynamic loading glue for i386, also by Olaf.
343: We don't have a dynamic loader yet, so this is not yet usable.
344: added readv, sigdelset, sigaltstack, sigfillset, sigismember, usleep,
345: vsprintf, writev, all by Olaf.
1.2 fefe 346: imported readdir fix from Guillaume. Mhh, can the kernel interface
347: really be this broken?
1.3 fefe 348: Found a kludgy way to detect whether the kernel includes define struct
349: stat64 (they also define STAT64_HAS_BROKEN_ST_INO). If this does
350: not work for you, please tell me!
1.4 fefe 351: Removed bogus __seek_types enum, it's a bunch of #defines now.
1.7 fefe 352: Fixed stdio line buffering. The code was already there but I forgot
353: to mark stdio and stdout as line buffered. This should really be
354: done dynamically using isatty, though.
1.8 fefe 355: Removed superfluous "if (1)" in execvp.c
1.1 cvs 356:
357: 0.6.14:
358: *scanf did not append the 0 byte for %s.
359: added creat and changed creat to call open directly instead of open64.
360: did for fread what 0.6.10 did for fwrite.
361: repaired buffered stdio a little (line buffering is still not
362: supported).
363: [All of these bugs have been reported by Guillaume. Thanks!]
364: added __pure__ to strchr and strrchr in <string.h>
365:
366: 0.6.13:
367: included COPYING to make clear that the diet libc is covered by the
368: GNU General Public License (and _not_ the LGPL). That means that
369: you need to obtain a license from me if you want to use the diet
370: libc in a proprietary program that you want to distribute.
371: The x86 unified syscall swapped arguments #4 and #5 and noone
372: noticed until now! Thanks to Guillaume Cottenceau for reporting
373: this!
374: The malloc had a subtle bug with small allocations that could cause
375: segfault. Guillaume reported it, Olaf fixed it.
376:
377: 0.6.12:
378: added assert, statfs and fstatfs
379: added include/net/if.h so fget compiles again.
380:
381: 0.6.11:
382: added putenv.
383:
384: 0.6.10:
385: fixed fwrite. It returned the number of bytes written, not the number
386: of records. Thanks to Albert D. Cahalan for pointing this out.
387: fixed fgets. It returned EOF on empty lines. Thanks, Erik Frey.
388: added brk and sbrk. harold@nb.com.sg made me do it.
389:
390: 0.6.9:
391: fixed execvp not to return on ENOENT
392: did for {open|read|close|seek|tell}dir what I did for stat before.
393: The glibc compatibility part is currently non-functional.
394: fixed white space handling in sscanf " (" would not match " (".
395: fixed printf to accept 'l' flag.
396: fixed getpwuid (ignored last line)
397:
398: 0.6.8:
399: Olaf contributed initial thread-safe syscalls for i386, alpha, sparc,
400: mips and arm. I did the one for ppc. They can be enabled in dietfeatures.h.
401: added strlcpy and strlcat from OpenBSD.
402: added stat64, fstat64 and lstat64.
403: added endian.h and made ending of strlen.c endianness-aware
404: added string routines size tweak to dietfeatures.h. Most of the
405: string routines have been unrolled. This is up to three times as
406: fast but creates up to three times larger code. Now you can disable
407: the unrolling.
408: added sendfile.
409: I also added pread. It works on x86 and sparc but not on ppc and mips.
410: I have no idea what's going on. strace disagrees with the kernel.
411: Can anyone help? I asked the Linux kernel mailing list for help, too.
412: added a few aliases of the type __libc_open for open. nm on
413: libpthreads.so indicates that we will need them.
414:
415: 0.6.7:
416: the sources now compile without warnings with -Wall.
417: printf now prints "(null)" when %s is passed NULL. This can be
418: removed with WANT_NULL_PRINTF in dietfeatures.h
419: added vfprintf, execl, ttyname.
420: stat, lstat and fstat are now #defined to __dietstat, __dietlstat and
421: __dietfstat so they can use the normal kernel struct stat.
422: stat, lstat and fstat are now C wrappers that convert to the glibc
423: struct stat. So we can avoid that overhead for programs that use
424: dietlibc headers.
425:
426: 0.6.6:
427: changed the Makefiles so you can now set CFLAGS on the command line
428: added memccmp (analogous to memccpy) and strncmp.
429: Olaf fixed another bug in the sparc unified syscall.
430: Paul Clifford contributed a C version of his strlen.S that is much
431: more efficient than the previous strlen on all platforms! It also
432: looks like technology from Roswell. ;-}
433: added a "real" stdio. Well, almost. Please contribute!
434: added dietfeatures.h so you can remove features you don't need.
435: removed debug code from vsnprintf that changed \0 to ' ' (argh!).
436: stdio now works with simple programs and minigzip from libz.
437: stdio uses some major trickery to avoid linking the stdio, stderr and
438: stdout (and reserving space for them) when they are not used.
439:
440: 0.6.5:
441: Red Plait <redplait@ixcelerator.com> found several bugs in diet libc,
442: most of them bugs in the new header files, but also missing sigset
443: functions.
444: Paul Clifford contributed an assembly strlen.S for ARM and fixed
445: several bugs.
446: Fixed ppc/setjmp and mips/pipe.
447: Olaf contributed a new sparc unified syscall.
448:
449: 0.6.4:
450: declared is* static inline in getservent.
451: added assert_fail, strtoul, isalpha, isdigit, isalnum, isascii.
452: changed strlen to return 0 when passed NULL.
453: new, much smaller unified syscall for MIPS. Thanks to Olaf the Mad
454: Scientist who actually implemented this without access to a MIPS
455: box, just from reading the architecture manual. And it worked out
456: of the box.
457: started a set of system includes, mainly so that I can use lcc and
458: my alpha-linux cross compiler (which is unable to cross-compile
459: glibc). diet libc can now be compiled without any include files
460: from a normal libc. The includes do declare more than diet libc
461: currently delivers and they are still far from complete for real
462: applications.
463: I will only add assembly versions that are smaller _and_ faster than
464: the C version. Larger routines are only accepted if they are called
465: very often and are substantially faster.
466: added i386 assembly strchr, which is smaller and faster than the old
467: version. It is, however, larger than the version contributed by
468: proton (thanks, anyway).
469: added i386 strlen (31% faster, 14% smaller)
470: "make t" will now create a map file called "mapfile".
471:
472: 0.6.3:
473: added sys_errlist, strerror and perror
474: added isblank
475: added atol
476:
477: 0.6.2:
478: mmap for ARM didn't compile. Thanks, Paul!
479:
480: 0.6.1:
481: split mmap into the architecture specific subdirectories.
482: getenv now copes with environ==NULL, thanks Paul Clifford.
483: Paul also contributed a smaller ARM startup code.
484:
485: 0.6:
486: strcat returned the wrong result. Thanks, Dietz Pröpper.
487: strtod now understands a negative exponent (oops, thanks Bertram Barth)
488: Port to arm-linux-gnu, but on the Netwinder I use for testing the
489: __dtostr does not work (I have no idea why!)
490: The MIPS port now uses (much smaller) non-PIC code. That means that
491: the applications you link against diet libc also have to be compiled
492: non-PIC. I suggest copying the CFLAGS from the diet libc Makefile.
493: Thanks to Ralf Bächle for helping me with this!
494: I made subdirectories for the architectures and use VPATH to override
495: VPATH so that make finds the source file automatically. That should
496: simplify the sources greatly.
497: Olaf Dreesen contributed Alpha support including setjmp and longjmp!
498: ARM and MIPS now also have setjmp and longjmp
499: "compile" and "load" are now make targets. Use them for djb programs.
500: added contrib/elftrunc.c which will remove unnecessary ELF headers.
501: Again, contributed from Olaf. Great work!
502:
503: 0.5.12:
504: printf also does signed numbers.
505: If you don't use atexit, dietlibc now does not link exit, only _exit.
506: *printf now correctly returns the number of bytes written.
507: Olaf contributed experimental sscanf and vsscanf implementations.
508: If passed NULL as buffer, snprintf will not write anything but still
509: return the number of bytes it would have written.
510: Initial MIPS port! (Oh, the agony!)
511: No setjmp and longjmp support yet! Please contribute!
512: I even implemented unified syscalls for MIPS. Still, MIPS code is
513: almost twice the size of SPARC code. If anyone knows why: please
514: tell me!
515:
516: 0.5.11:
517: I implemented new unified syscalls for x86, sparc and ppc, this time based
518: on .s files and not .c files, and I moved the syscalls into
519: subdirectores to clean the dietlibc sources up a little.
520: A binary consisting of printf("%s is %d\n","olaf",23) is now
521: 2864 bytes on sparc
522: 2488 bytes on intel
523: I kludgily implemented fprintf(stdout,... and fprintf(stderr,...
524: to make a few more applications work.
525: Olaf Dreesen also implemented some unified syscall stuff for x86.
526: He discovered that with our unified syscall interface it actually
527: costs <10 bytes total to make all system calls thread safe!
528: I implemented atexit() (can register up to 4 callbacks).
529: I implemented strtod and __dtostr (the opposite). Now we can add
530: floating point support to vsnprintf and sscanf!
531:
532: 0.5.10:
533: I actually saw that I can not only merge the errno handling code of
534: the system calls on x86, I can also merge the rest (including the
535: arguments) except for setting the system call number. All those
536: system calls are now just a jump to a unified system call handler.
537: I got rid of x86openclose again. The savings are substantial:
538: chown from embutils went from 7664 to 7184 bytes!
539: If I'd move the system call wrappers to assembly language, I could
540: even reduce the alignment (does not matter since it's just a jump
541: anyway) and get rid of the "ret" behind each jump (one byte per
542: system call!)
543:
544: 0.5.9:
545: added memchr, strpbrk, strstr, strtol, isspace (hehe)
546: fixed strdup
547: fixed return values for strcpy and strcat (thanks to Norbert Berzen)
548: Olaf Dreesen contributed a strtol and initial {sn|vsn|}printf implementation
549: (no signed integers, only strings and unsigned integers (but
550: supporting octal, hex and decimal). Thanks, Olaf! (by the way:
551: that code must be wonderful, I don't understand it at all *bg*)
552: Olaf's printf does understand padding like in "%08d" and "%8d" and
553: automatically pads pointers with '0'.
554: Rewrote the x86 start code, old: 22 instructions, new: 12 instructions.
555: Thanks to proton for inspiration on this.
556: The new x86 start code also does not reference exit any more, thus saving
557: 64 bytes for executables that don't call exit explicitly.
558: [insert maniacal laughter] EVERY BYTE COUNTS!1!! ;-)
559: Moved errno and environ to start.S, saving no byte binary size but
560: speeding up compilation and slightly shortening dietlibc.a ;-)
561: For x86: joined open and close into one assembler file, sharing the
562: errno handling. This is a feasibility test and it actually saves a
563: few bytes. I think I will reimplement the _syscall[1-6] macros on
564: all platforms now to share the errno handling code for them.
565:
566: 0.5.8:
567: fixed strchr to be able to look for 0.
568:
569: added _llseek, ftruncate, getpgid, getresgid, getresuid, getsid,
570: memccpy, memmove, mprotect, setregid, setresgid, setresuid, setreuid,
571: strncpy, swapon, truncate, strtok, strtok_r, strspn, strcspn (all
572: contributed by Olaf Dreesen)
573:
574: added execvp, getcwd
575:
576: fixed __xmknod
577:
578: Note: can it be that the ftw interface really is so broken that I
579: cannot implement it without having to implement some searching data
580: structure? I included an experimental ftw implementation that will
581: not follow symlinks.
582:
583: 0.5.7:
584: oops, if_nametoindex was broken!
585:
586: 0.5.6:
587: ported to ppc-linux.
588: fixed i386 sigsetjmp (I mistyped the function name)
589: included sigjmp.c
590:
591: 0.5.5:
592: added wait, sys_siglist, longjmp/setjmp/sigsetjmp for i386 and sparc
593: actually, it wasn't fork that wasn't working for sparc, it was pipe.
594: I fixed it now.
595: dietlibc/SPARC assumes -msupersparc (does not provide div, mul, etc)
596: fixed readdir to use getdents and not the intel inline asm
597:
598: 0.5.4:
599: ported to sparclinux (sparc32 only). Beware: does not work yet.
600: added raise, abort, readlink, strcat, geteuid, geteuid, wait3, access
601:
602: 0.5.3:
603: added tcsetattr and getenv to compile e3
604:
605: 0.5.2:
606: added vhangup, tcgetattr, isatty and memcmp for fgetty
607: (http://www.fefe.de/fgetty/)
608: added localtime from uC-libc.
609:
610: 0.5.1:
611: stat and friends actually work now. Yuck! Another case of
612: translation between kernel and userland. Why can't the kernel
613: people and the libc people simply agree on a standard?
614: removed many unnecessary includes to speed up compilation.
615: added -fomit-frame-pointer and i386 compilation target to reduce code size.
616: inlined socketcall to reduce code size.
617: "load" and "compile" are examples for djb code.
618:
619: 0.5:
620: Olaf Dreesen contributed a much smaller implementation of malloc and friends.
621: each object file is now treated with "strip -x -R .note -R .comment"
622: split each system call into a separate object file
623: added ntohs, htons, alarm, if_indextoname and if_nametoindex
624:
625: 0.4.1:
626: oops, the strchr implementation was wrong. Thanks Jens Laas!
627:
628: 0.4:
629: copied opendir and friends from uC-libc.
630: added getservent and getservby* in gerservent.c
631:
632: 0.3:
633: remove readdir system call
634: added getdents system call
635: added getpwnam/getpwuid implementation in getpwnam.c
636: added a few string functions (in str*.c)
637:
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