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