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