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