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* Add missing END() macros, as per rev 184547 for amd64. The lack of thesepeter2008-11-0243-4/+59
| | | | is mostly harmless, but it does upset some of valgrind's functionality.
* We should also save and restore the MXCSR as on amd64, but detectingdas2008-06-282-2/+0
| | | | whether the CPU supports SSE or not here is rather odious.
* Add an alternative view of the bits in an 80-bit long double (64+16bde2008-01-171-1/+6
| | | | | | | | | | | | | | | | | | | | instead of 32+32+15+1) on all arches that have such long doubles (amd64, ia64 and i386). Large objects should be be accessed in large units, and the 32+32+15+1[+padding] decomposition asks for almost the opposite of that, sometimes resulting in very slow accesses depending on how well the compiler ignores what we ask for and converts to the best units for the given machine. E.g., on Athlons, there is a 10-20 cycle penalty for accessing the middle 32-bit word immediately after an 80-bit store. Whether actually using the alternative view is better is very machine- dependent. A 32+32+16 view is probably best with old 32-bit systems and gcc through 4.2.1. The compiler should mostly avoid the view and generate best accesses, but gcc-4.2.1 is far from doing that. I think 64+16 is best for now. Similarly for doubles -- they should be using 64+0 especially on 64-bit machines, but fdlibm uses 32+32 extensively for them. Fortunately, in 64-bit mode for doubles, gcc already ignores the 32+32-bit view and generates best accesses in many cases.
* Since nan() is supposed to work the same as strtod("nan(...)", NULL),das2007-12-181-3/+0
| | | | | | | | | | | | my original implementation made both use the same code. Unfortunately, this meant libm depended on a vendor header at compile time and previously- unexposed vendor bits in libc at runtime. Hence, I just wrote my own version of the relevant vendor routine. As it turns out, mine has a factor of 8 fewer of lines of code, and is a bit more readable anyway. The strtod() and *scanf() routines still use vendor code. Reviewed by: bde
* Export gdtoa's __ULto{x,Q}_D2A routine in a private namespace sodas2007-12-161-0/+3
| | | | libm can use it.
* Arrange so that the NaN returned by strtod("nan", NULL) is the same asdas2007-12-161-4/+4
| | | | the NaN returned by strtod("nan()", NULL).
* In scanf, round according to the current rounding mode.das2007-12-031-1/+1
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* Classify mmap, lseek, pread, pwrite, truncate, ftruncate as pseudopeter2007-07-041-3/+5
| | | | | | | | | | syscalls, unless WITHOUT_SYSCALL_COMPAT is defined. The default case will have the .c wrappers still. If you define WITHOUT_SYSCALL_COMPAT, the .c wrappers will go away and libc will make direct syscalls. After 7-stable starts, the direct syscall method will be default. Approved by: re (kensmith)
* Adjust the syscall stub macros to be consistent in their meaning. Inpeter2007-07-041-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | particular: SYSCALL() makes a syscall, with errno handling, and continues execution directly after the macro in the non-error case. RSYSCALL() is just like SYSCALL(), but returns after success. Both SYSCALL(name) and RSYSCALL(name) export "__sys_name" as a strong symbol, with "_name" and "name" as weak aliases. PSEUDO() is just like RSYSCALL(), but skipping the "name" weak alias. It still does "__sys_name" and "_name". Change i386 to add errno handling to PSEUDO. The same for amd64 and sparc64, with appear to have copied the behavior. ia64 was correct (as was alpha). Just remove some apparently unused variants of the macros. (untested!) I believe powerpc is correct. Fix arm to not export "name" from the PSEUDO case. Remove apparently extra unused variants. (untested!) The errno problem manifested on i386/amd64/sparc64 by having "PSEUDO" classified syscalls return without setting errno. eg: "addr = mmap()" could return with "addr" = 22 instead of setting errno to 22 and returning -1. Approved by: re (kensmith)
* Some libc symbol map cleanups.deischen2007-05-311-4/+0
| | | | | | | | | | | | | | | | | | | | | net: endhostdnsent is named _endhostdnsent and is private to netdb family of functions. posix1e: acl_size.c has been never compiled in, so there's no "acl_size". rpc: "getnetid" is a static function. stdtime: "gtime" is #ifdef'ed out in the source. some symbols are specific only to some architectures, e.g., ___tls_get_addr is only defined on i386. __htonl, __htons, __ntohl and __ntohs are no longer functions, they are now (internal) defines in <machine/endian.h>. Submitted by: ru
* Remove .mcount from gmon's Symbol map and add it to the appropriatedeischen2007-05-131-0/+1
| | | | | | | arch. It can be named differently depending on the arch (.mcount, _mcount). Submitted by: marius
* Use C comments since we now preprocess these files with CPP.deischen2007-04-291-9/+11
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* Clean-ip TLS symbol versions. [_]__tls_get_addr function is part ofkan2007-04-091-0/+1
| | | | | | | the platform ABI and as such does not belong in FBSDprivate. __libc_tls_* functions do not have to be visible to outside world at all.
* Per Regents of the University of Calfornia letter, remove advertisingimp2007-01-0923-91/+0
| | | | | | clause. # If I've done so improperly on a file, please let me know.
* Handle inf/nan correctly.das2007-01-061-2/+14
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* The distinction between quiet and signaling NaN formats isdas2007-01-031-0/+21
| | | | | machine-dependent; these files tell the latest version of gdtoa what to do.
* Instead of re-implementing hton[ls] and friends for each arch, add a new MIcognet2006-11-065-206/+0
| | | | | | | file, net/ntoh.c, which just implement them using the inline functions from <sys/endian.h>. Suggested by: bde
* Forgot to bump the document date.ru2006-10-131-1/+1
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* Some word smithing adopted from the PR.ru2006-10-131-14/+14
| | | | | | | PR: docs/54451 Originally by: Andreas Fuchs Adopted by: jhb MFC after: 3 days
* Markup fixes.ru2006-09-171-6/+6
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* GC dead code. If we want to stay polite to the foreign compilers,ru2006-09-052-63/+1
| | | | | | we can find another way to issue an #error, but using a preprocessed assembler for that purpose and clobbering libc.a with an empty .o just for the sake of #error reporting is way too much of a burden.
* Replace absolute addressing in the call instructions with position-independendkib2006-06-051-2/+3
| | | | | | | | calls. This eliminates TEXTREL from libc, making its text segment relocatable. PR: i386/85242 Approved by: kan (mentor) MFC after: 1 month
* A few minor wording changes and a clarification about error conditions.bsd2006-05-031-10/+10
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* Add each directory's symbol map file to SYM_MAPS.deischen2006-03-131-0/+1
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* Add symbol maps and initial symbol version definitions to libc.deischen2006-03-131-0/+71
| | | | Reviewed by: davidxu
* Include a couple of headers to ensure consistency between the prototype andstefanf2005-09-122-0/+4
| | | | the function definition.
* Clean out the leftovers from the i386_set_gsbase() TLS conversion.peter2005-06-291-18/+1
| | | | | | | | Like on libthr, there is an i386_set_gsbase() stub implementation here to avoid libc.so.5 issues. This should likely be a weak symbol and I expect this will be fixed soon. Approved by: re
* Provide stub functions for i386_set_ldt() and i386_get_ldt() even whenpeter2005-04-262-7/+4
| | | | | compiling as an amd64 support binary. They will return EINVAL on an amd64 kernel, but this simplifies other #ifdefs that were getting a bit nasty.
* No longer use _amd64_set_gsbase(). Use i386_set_gsbase() even whenpeter2005-04-266-166/+2
| | | | building for amd64.
* Eliminate an unpredictable branch from bcmp().alc2005-04-211-5/+4
| | | | Reviewed by: bde
* Attempt i386_set_gsbase() before using the user_ldt code. Unimplementedpeter2005-04-141-1/+4
| | | | sysarch() calls return EINVAL, not SIGSYS.. so we can trivially adapt.
* Add stubs for the %fs/%gs base management calls.peter2005-04-145-0/+149
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* Fix strict-alias warnings by removing excessive (and wrong) casts.peter2005-04-072-2/+2
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* Define LDBL_NBIT to be a mask indicating the position of the integerdas2005-03-071-1/+2
| | | | | | | | bit in a long double. For architectures that don't have such a bit, LDBL_NBIT is 0. This makes it possible to say `mantissa & ~LDBL_NBIT' in places that previously used an #ifdef to select the right expression. The optimizer should dispense with the extra arithmetic when LDBL_NBIT is 0.
* Update my email address.das2005-02-061-1/+1
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* Eliminate gdtoa.mk and move its contents to ${MACHINE_ARCH}/Makefile.inc.das2005-01-151-0/+0
| | | | | The purpose of having a separate file involved an abandoned scheme that would have kept contrib/gdtoa out of the include path for the rest of libc.
* Make sure the first argument to the user function is 16-byte aligned.deischen2004-12-051-5/+7
| | | | Submitted by: tegge
* Remove 80386 support from libc.jhb2004-11-162-12/+0
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* When building the custom i386 libraries for use on amd64 kernels, wepeter2004-11-066-0/+170
| | | | | | | | | can't use the i386_set_ldt() family of routines, because they are not implemented. Instead, use the recently exposed direct access sysarch routines for setting what %fs and %gs point to. Use this for the i386 TLS _set_tp() routine, but only when compiling to run as a 32 bit support binary for amd64 kernels.
* Sync with sys/i386/include/endian.h: use the single instruction 'bswap'.obrien2004-10-182-0/+8
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* Add support for TLS in statically linked programs.dfr2004-08-152-1/+53
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* Make FLT_ROUNDS correctly reflect the dynamic rounding mode.das2004-07-192-1/+26
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* Replace seven nominally MD implementations of frexp() that are brokendas2004-07-182-68/+1
| | | | for subnormals with one implementation that works.
* Implement the classification macros isfinite(), isinf(), isnan(), anddas2004-07-092-76/+1
| | | | | | | | | | | | | | | | | | | | | isnormal() the hard way, rather than relying on fpclassify(). This is a lose in the sense that we need a total of 12 functions, but it is necessary for binary compatibility because we have never bumped libm's major version number. In particular, isinf(), isnan(), and isnanf() were BSD libc functions before they were C99 macros, so we can't reimplement them in terms of fpclassify() without adding a dependency on libc.so.5. I have tried to arrange things so that programs that could be compiled in FreeBSD 4.X will generate the same external references when compiled in 5.X. At the same time, the new macros should remain C99-compliant. The isinf() and isnan() functions remain in libc for historical reasons; however, I have moved the functions that implement the macros isfinite() and isnormal() to libm where they belong. Moreover, half a dozen MD versions of isinf() and isnan() have been replaced with MI versions that work equally well. Prodded by: kris
* Mechanically kill hard sentence breaks.ru2004-07-022-6/+12
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* Follow previous change in makecontext. Use %esi to store next ucpdavidxu2004-07-021-1/+1
| | | | | pointer, here we keep orignal %ebp, so we can see where signal handler comes in and interrupt normal code.
* Removed trailing whitespace.ru2004-07-021-10/+10
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* Use %esi to store next ucp pointer. Mark end of stack bydavidxu2004-07-022-3/+4
| | | | | setting %ebp to zero, this avoids new gdb to dump a weird backtrace.
* Remove the code and an associated comment for gcc 1.x compatibilitydas2004-02-161-9/+1
| | | | and fix a typo in the !__GNUC__ case.
* Fix some aliasing problems.das2004-02-161-14/+19
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