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