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