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* Add the functions _Qp_cmp() and _Qp_cmpe() as described in the Sparcstefanf2005-06-211-8/+11
| | | | | | | | Compliance Definition. On sparc64, GCC emits _Qp_cmp() calls for its __builtin_isfoo() functions which are used for C99's isfoo() macros. Approved by: re(dwhite) PR: 73782
* Fix long (and long long) to long double, unsigned to long double and unsignedstefanf2005-05-272-10/+24
| | | | | | | | | | | | | | | long (and unsigned long long) to long double conversions. - Add a parameter that specifies the position of the sign bit to the _QP_TTOQ macro, previously it always looked at bit 31. Pass a negative number to disable sign inspection for unsigned types. This fixes _Qp_xtoq(), _Qp_uitoq() and _Qp_uxtoq(). - In the functions __fpu_itof() and __fpu_xtof(), look at the sign bit to decide whether we're doing a conversion from an unsigned type. If so, don't negate the mantissa if the integer exceeds the biggest signed number. PR: 55773 Patch by: Stephen Paskaluk (based upon) MFC after: 2 weeks
* Remove fpsetsticky(). This was added for SysV compatibility, but duedas2005-03-152-31/+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 thedas2005-01-221-155/+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.
* Correct the values of FLT_ROUNDS for the FE_UPWARD and FE_DOWNWARD cases.das2005-01-181-2/+2
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* Eliminate gdtoa.mk and move its contents to ${MACHINE_ARCH}/Makefile.inc.das2005-01-152-5/+4
| | | | | 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.
* For variables that are only checked with defined(), don't provideru2004-10-241-1/+1
| | | | any fake value.
* Add support for TLS in statically linked programs.dfr2004-08-152-1/+36
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* s/round/fpround/ to avoid naming clash with GCC builtin function.kan2004-07-281-8/+8
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* Replace seven nominally MD implementations of frexp() that are brokendas2004-07-182-79/+1
| | | | for subnormals with one implementation that works.
* Implement the classification macros isfinite(), isinf(), isnan(), anddas2004-07-092-70/+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.des2004-03-161-17/+14
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* Fix some aliasing problems.das2004-02-161-6/+14
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* style cleanup: Remove duplicate $FreeBSD$ tags.cperciva2004-02-101-2/+0
| | | | | | | | These files had tags after teh copyright notice, inside the comment block (incorrect, removed), and outside the comment block (correct). Approved by: rwatson (mentor)
* Add prototypes for the three syscall stubs that are invoked here,nectar2004-01-191-0/+4
| | | | in order to quiet warnings.
* 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.
* We need to discard `const'ness explicitly when invoking sysarch.nectar2004-01-101-1/+1
| | | | Reported by: sparc64 tinderbox via bde
* Provide sysarch(2) prototypes in the MD sysarch.h headers. While I'mnectar2004-01-093-8/+3
| | | | | | | | | | 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
* Remove unused variables. Add required headers and functionnectar2004-01-067-6/+12
| | | | declarations.
* Install the user trap handlers that libc provides from a constructor, sojake2003-11-181-0/+2
| | | | | | | | that they will be installed before application constructors are invoked. Its possible to link applications such that this fails, application code is invoked before they are installed, but, well, Don't Do That. Approved by: re (jhb)
* 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
* Implement signalcontext.jake2003-08-082-2/+78
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* 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/+8
| | | | | | | 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@
* Implement makecontext.jake2003-04-013-3/+129
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* 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
* 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/+43
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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)
* Rewrite longjmp() and _longjmp() to directly restore the saved frame,tmm2003-01-052-55/+19
| | | | | | | | | instead of unwinding the call stack. This makes them usable to switch stacks, e.g. for libc_r. Do not save the frame pointer in setjmp() and _setjmp(), it is not needed any more. Rename _longjmp() to ___longjmp(), with a weak alias to _longjmp(), like the other architectures did.
* Rename siglongjmp() to __siglongjmp(), with a weak alias to siglongjmp(),tmm2003-01-051-2/+4
| | | | like the other architectures do.
* libc_r wasn't so tied to libc for 22 months.ru2002-11-181-1/+1
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* 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
* Rename the libc signal trampoline to __sigtramp to match netbsd. Thisjake2002-10-222-4/+4
| | | | should allow gdb to detect when we're executing in a signal trampoline.
* 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
* Use the macros from machine/fsr.h; some minor cleanups.tmm2002-09-141-5/+6
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* Add implementations of fpgetmask(), fpgetround(), fpgetsticky(),tmm2002-09-146-1/+126
| | | | | fpsetround(), fpsetsticky(), obtained from NetBSD and tweaked a little to use definitions from machine/fsr.h instead of magic numbers.
* Add an implementation of fabs() (which is quite trivial).tmm2002-09-132-1/+38
| | | | | | | | | When it is called directly, gcc is smart enough to generate inline code for it, which is why it wasn't noticed before that it was missing. fabs() would probably better fit into libm, but it has traditionally been in libc on FreeBSD, so there is probably software around that makes assumptions about this by now.
* Install the userland signal trampoline when sigaction is first called,jake2002-09-032-1/+50
| | | | | | | instead of on startup. This fixes binary compatibility of dynamically linked binaries from before the signal code move. Suggested by: wollman (a long time ago)
* Use FOO(a) for macros with variadic args, instead of FOO(a,) or FOO(a, ).jake2002-09-021-3/+3
| | | | Submitted by: gcc3.2
* Add missing ret instruction to the ptrace() syscall wrapper.tmm2002-07-111-0/+2
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* Use FBSDIDobrien2002-06-3013-84/+32
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* Use __FBSDID.obrien2002-06-295-36/+9
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* Add frexp(3).obrien2002-06-292-2/+80
| | | | Obtained from: OpenBSD
* Remove unneeded include of machine/emul.h.jake2002-06-181-1/+0
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* Implement _Qp_sqrt. I've been unable to find a C program that gcc generatesjake2002-06-041-0/+14
| | | | a call to this for, but apparently somehing in libstdc++ does.
* 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
* Use the right byte order for unaligned stores. <blush>.jake2002-05-131-1/+1
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