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* Remove fpsetsticky(). This was added for SysV compatibility, but duedas2005-03-152-63/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | to mistakes from day 1, it has always had semantics inconsistent with SVR4 and its successors. In particular, given argument M: - On Solaris and FreeBSD/{alpha,sparc64}, it clobbers the old flags and *sets* the new flag word to M. (NetBSD, too?) - On FreeBSD/{amd64,i386}, it *clears* the flags that are specified in M and leaves the remaining flags unchanged (modulo a small bug on amd64.) - On FreeBSD/ia64, it is not implemented. There is no way to fix fpsetsticky() to DTRT for both old FreeBSD apps and apps ported from other operating systems, so the best approach seems to be to kill the function and fix any apps that break. I couldn't find any ports that use it, and any such ports would already be broken on FreeBSD/ia64 and Linux anyway. By the way, the routine has always been undocumented in FreeBSD, except for an MLINK to a manpage that doesn't describe it. This manpage has stated since 5.3-RELEASE that the functions it describes are deprecated, so that must mean that functions that it is *supposed* to describe but doesn't are even *more* deprecated. ;-) Note that fpresetsticky() has been retained on FreeBSD/i386. As far as I can tell, no other operating systems or ports of FreeBSD implement it, so there's nothing for it to be inconsistent with. PR: 75862 Suggested by: bde
* Define LDBL_NBIT to be a mask indicating the position of the integerdas2005-03-071-0/+1
| | | | | | | | 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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* Replace the ldexp() implementation in libc with a renamed copy of thedas2005-01-221-137/+0
| | | | | | | | | | | | | | | | scalbn() implementation from libm. (The two functions are defined to be identical, but ldexp() lives in libc for backwards compatibility.) The old ldexp() implementation... - was more complicated than this one - set errno instead of raising FP exceptions - got some corner cases wrong (e.g. ldexp(1.0, 2000) in round-to-zero mode) The new implementation lives in libc/gen instead of libc/$MACHINE_ARCH/gen, since we don't need N copies of a machine-independent file. The amd64 and i386 platforms retain their fast and correct MD implementations and override this one.
* Eliminate gdtoa.mk and move its contents to ${MACHINE_ARCH}/Makefile.inc.das2005-01-152-4/+3
| | | | | 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.
* When required to negate the absoulte result of a division/remainderpeadar2004-11-271-1/+1
| | | | | | | | | | | | | | operation (by subtracting the absolute result from 0), don't test for overflow. This avoids an arithmetic exception when dividing LONG_MIN by 1: This is the only case that causes overflow, and the resulting value is correct under 2's compliment arithmetic. PR: 72024 Approved by: dwmalone@ Obtained from: NetBSD MFC after: 4 days
* For variables that are only checked with defined(), don't provideru2004-10-241-1/+1
| | | | any fake value.
* Fix alpha build and add __FBSDID.dfr2004-08-161-1/+4
| | | | PR: 70518
* Add support for TLS in statically linked programs.dfr2004-08-152-1/+38
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* Replace seven nominally MD implementations of frexp() that are brokendas2004-07-182-57/+1
| | | | for subnormals with one implementation that works.
* Implement the classification macros isfinite(), isinf(), isnan(), anddas2004-07-092-69/+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
* Use unions to avoid violating C99 strict aliasing rules.des2004-03-165-26/+36
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* Fix some aliasing problems.das2004-02-161-6/+14
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* Define LDBL_MANH_SIZE and LDBL_MANL_SIZE to be the sizes of thedas2004-01-181-0/+3
| | | | high and low words of the mantissa in bits, respectively.
* Provide sysarch(2) prototypes in the MD sysarch.h headers. While I'mnectar2004-01-092-4/+2
| | | | | | | | | | at it, use the ANSI C generic pointer type for the second argument, thus matching the documentation. Remove the now extraneous (and now conflicting) function declarations in various libc sources. Remove now unnecessary casts. Reviewed by: bde
* Add required headers and function declarations.nectar2004-01-062-0/+3
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* - Use the magic for ___sigreturn in __sigset.jeff2003-11-141-3/+11
| | | | | | | | - In __sigreturn call sigprocmask() to restore our signal state rather than returning through sigreturn(). jmp to ___sigreturn to restore our register state following this. Requested by: pete
* Remove incomplete support for running FreeBSD userland on old NetBSD kernelstjr2003-10-291-4/+0
| | | | lacking the issetugid() and utrace() syscalls.
* Fix wrong identifier on .end directive. The SYSCALL macro does namemarcel2003-08-164-4/+4
| | | | mangling and creates an .ent directive with the mangled name.
* Add the mlockall() and munlockall() system calls.bms2003-08-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | - All those diffs to syscalls.master for each architecture *are* necessary. This needed clarification; the stub code generation for mlockall() was disabled, which would prevent applications from linking to this API (suggested by mux) - Giant has been quoshed. It is no longer held by the code, as the required locking has been pushed down within vm_map.c. - Callers must specify VM_MAP_WIRE_HOLESOK or VM_MAP_WIRE_NOHOLES to express their intention explicitly. - Inspected at the vmstat, top and vm pager sysctl stats level. Paging-in activity is occurring correctly, using a test harness. - The RES size for a process may appear to be greater than its SIZE. This is believed to be due to mappings of the same shared library page being wired twice. Further exploration is needed. - Believed to back out of allocations and locks correctly (tested with WITNESS, MUTEX_PROFILING, INVARIANTS and DIAGNOSTIC). PR: kern/43426, standards/54223 Reviewed by: jake, alc Approved by: jake (mentor) MFC after: 2 weeks
* Add signalcontext() which will be needed by libpthread.deischen2003-08-092-1/+104
| | | | Reviewed by: marcel
* Only allow trapframe formats instead of sigframe formats like themarcel2003-07-301-4/+4
| | | | | comment says and don't write the first 3 arguments to FRAME_TRAPARG_* as they are specific to sigframes.
* Add a comment describing why it's important for the values in thisdas2003-05-081-0/+7
| | | | | | file to be correct, and how to generate them automatically. Caused much pain and suffering for: peter
* Add __ldtoa(), a wrapper around gdtoa() to make it look like dtoa().das2003-04-051-0/+6
| | | | | | | In support of this, add some MD macros to assist in converting long doubles to the format expected by gdtoa(). Reviewed by: silence on standards@
* Replace our ancient dtoa/strtod implementation with the gdtoadas2003-03-122-0/+17
| | | | | | | | | | | | | | | | | | package, a more recent, generalized set of routines. Among the changes: - Declare strtof() and strtold() in stdlib.h. - Add glue to libc to support these routines for all kinds of ``long double''. - Update printf() to reflect the fact that dtoa works slightly differently now. As soon as I see that nothing has blown up, I will kill src/lib/libc/stdlib/strtod.c. Soon printf() will be able to use the new routines to output long doubles without loss of precision, but numerous bugs in the existing code must be addressed first. Reviewed by: bde (briefly), mike (mentor), obrien
* Remove these from libc; they are now system calls.deischen2003-02-181-374/+0
| | | | Prompted by: mini
* o Implement C99 classification macros isfinite(), isinf(), isnan(),mike2003-02-121-0/+5
| | | | | | | | | isnormal(). The current isinf() and isnan() are perserved for binary compatibility with 5.0, but new programs will use the macros. o Implement C99 comparison macros isgreater(), isgreaterequal(), isless(), islessequal(), islessgreater(), isunordered(). Submitted by: David Schultz <dschultz@uclink.Berkeley.EDU>
* Implement fpclassify():mike2003-02-082-0/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | o Add a MD header private to libc called _fpmath.h; this header contains bitfield layouts of MD floating-point types. o Add a MI header private to libc called fpmath.h; this header contains bitfield layouts of MI floating-point types. o Add private libc variables to lib/libc/$arch/gen/infinity.c for storing NaN values. o Add __double_t and __float_t to <machine/_types.h>, and provide double_t and float_t typedefs in <math.h>. o Add some C99 manifest constants (FP_ILOGB0, FP_ILOGBNAN, HUGE_VALF, HUGE_VALL, INFINITY, NAN, and return values for fpclassify()) to <math.h> and others (FLT_EVAL_METHOD, DECIMAL_DIG) to <float.h> via <machine/float.h>. o Add C99 macro fpclassify() which calls __fpclassify{d,f,l}() based on the size of its argument. __fpclassifyl() is never called on alpha because (sizeof(long double) == sizeof(double)), which is good since __fpclassifyl() can't deal with such a small `long double'. This was developed by David Schultz and myself with input from bde and fenner. PR: 23103 Submitted by: David Schultz <dschultz@uclink.Berkeley.EDU> (significant portions) Reviewed by: bde, fenner (earlier versions)
* Use __FBSDID.obrien2003-01-1928-42/+66
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* libc_r wasn't so tied to libc for 22 months.ru2002-11-181-8/+8
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* Disconnect the userland get/set/swapcontext() functions fromdeischen2002-11-162-2/+2
| | | | | | | | | libc. I want to keep these in some version for the thread library/ies, but don't know whether to have them repo-copied to libc_r or renamed and kept in libc. Change the name of an alpha macro that was changed with the system call commit.
* Re-apply the previously backed-out commit that fixes the problem wherearchie2002-10-311-1/+1
| | | | | | | | HUGE_VAL is not properly aligned on some architectures. The previous fix now works because the two versions of 'math.h' (include/math.h and lib/msun/src/math.h) have since been merged into one. PR: bin/43544
* Revert previous commit to unbreak world until we figure out thearchie2002-09-201-1/+1
| | | | right way to do it.
* Fix a problem with the definition of HUGE_VAL causing the gcc warningarchie2002-09-191-1/+1
| | | | | | "cast increases required alignment of target type" on some platforms. Reviewed by: bde
* Generate the normal asm stubs for all sysv system calls. Use these insteadjake2002-05-231-5/+3
| | | | | | | of C wrappers for the *sys indirect system calls. The indirect system calls are horribly broken on sparc64. Submitted by: tmm
* Our default syscall.S is identical to what was explicitly being done forobrien2002-05-152-33/+1
| | | | Alpha and IA-64. So there is no need for special handling.
* Fix the style of the SCM ID's.obrien2002-03-221-1/+2
| | | | I believe have made all of libc .h's as consistent as possible.
* Remove 'register' keyword.obrien2002-03-212-3/+3
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* Move swapcontext.c to the ${MACHINE_ARCH}/gen/Makefile.inc area, otherwisepeter2002-03-211-1/+1
| | | | | it causes undefined references to getcontext() and setcontext() on platforms other than i386 and alpha.
* o Move NTOHL() and associated macros into <sys/param.h>. These aremike2002-02-186-8/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | deprecated in favor of the POSIX-defined lowercase variants. o Change all occurrences of NTOHL() and associated marcros in the source tree to use the lowercase function variants. o Add missing license bits to sparc64's <machine/endian.h>. Approved by: jake o Clean up <machine/endian.h> files. o Remove unused __uint16_swap_uint32() from i386's <machine/endian.h>. o Remove prototypes for non-existent bswapXX() functions. o Include <machine/endian.h> in <arpa/inet.h> to define the POSIX-required ntohl() family of functions. o Do similar things to expose the ntohl() family in libstand, <netinet/in.h>, and <sys/param.h>. o Prepend underscores to the ntohl() family to help deal with complexities associated with having MD (asm and inline) versions, and having to prevent exposure of these functions in other headers that happen to make use of endian-specific defines. o Create weak aliases to the canonical function name to help deal with third-party software forgetting to include an appropriate header. o Remove some now unneeded pollution from <sys/types.h>. o Add missing <arpa/inet.h> includes in userland. Tested on: alpha, i386 Reviewed by: bde, jake, tmm
* Add getcontext, setcontext, makecontext, and swapcontext. Thesedeischen2002-01-104-0/+598
| | | | | | | | | functions are defined in SUSv2 and the latest POSIX spec. Thanks to Bernd Walter <ticso@cicely8.cicely.de> for helping debug my alpha assembly. Approved by: -arch
* Save and restore t12 in the jmp_buf. t12 is used during functiondeischen2001-12-222-0/+3
| | | | | | | | | calls. This change allows libc_r to create thread contexts with a different stack and return address. With much detective work by: Bernd Walter <ticso@cicely.de>
* Fix vendor ID's.obrien2001-11-0712-36/+60
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* Clean up syscall generation in libc by removing HIDDEN_SYSCALLSdeischen2001-01-296-69/+28
| | | | | | | | | | | | | | and treating (almost) all system calls the same way: __sys_foo - actual syscall foo, _foo - weak definitions to __sys_foo Change PSEUDO syscalls (currently only _exit and _getlogin) to be __sys_foo (T) and _foo (W). Add $FreeBSD$ to a few files to satisfy commitprep. Suggested by: bde
* Comment only change; s/_thread_sys_/__sys_/deischen2001-01-261-2/+2
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* Remove _THREAD_SAFE and make libc thread-safe by default bydeischen2001-01-245-55/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | adding (weak definitions to) stubs for some of the pthread functions. If the threads library is linked in, the real pthread functions will pulled in. Use the following convention for system calls wrapped by the threads library: __sys_foo - actual system call _foo - weak definition to __sys_foo foo - weak definition to __sys_foo Change all libc uses of system calls wrapped by the threads library from foo to _foo. In order to define the prototypes for _foo(), we introduce namespace.h and un-namespace.h (suggested by bde). All files that need to reference these system calls, should include namespace.h before any standard includes, then include un-namespace.h after the standard includes and before any local includes. <db.h> is an exception and shouldn't be included in between namespace.h and un-namespace.h namespace.h will define foo to _foo, and un-namespace.h will undefine foo. Try to eliminate some of the recursive calls to MT-safe functions in libc/stdio in preparation for adding a mutex to FILE. We have recursive mutexes, but would like to avoid using them if possible. Remove uneeded includes of <errno.h> from a few files. Add $FreeBSD$ to a few files in order to pass commitprep. Approved by: -arch
* Remove last vestiges of thr_sleep and thr_wakeup from libc.jake2000-12-021-1/+1
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* Remove duplicate FreeBSD id tags.jhb2000-08-213-3/+0
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* Take a shot at implementing a functional rfork_thread() for alpha. Thispeter2000-07-292-0/+66
| | | | | | was not fun and I am not entirely certain of the correctness, but it seems to work. (in fact, side by side testing of this code vs the x86 version turned up hidden bugs in the x86 code).
* Finish moving all IEEE fp types to be the same on all arch's.jhb2000-05-102-3/+3
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