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