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* Add a new file operations hook for mmapjhb2018-08-241-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | operations. File type-specific logic is now placed in the mmap hook implementation rather than requiring it to be placed in sys/vm/vm_mmap.c. This hook allows new file types to support mmap() as well as potentially allowing mmap() for existing file types that do not currently support any mapping. The vm_mmap() function is now split up into two functions. A new vm_mmap_object() function handles the "back half" of vm_mmap() and accepts a referenced VM object to map rather than a (handle, handle_type) tuple. vm_mmap() is now reduced to converting a (handle, handle_type) tuple to a a VM object and then calling vm_mmap_object() to handle the actual mapping. The vm_mmap() function remains for use by other parts of the kernel (e.g. device drivers and exec) but now only supports mapping vnodes, character devices, and anonymous memory. The mmap() system call invokes vm_mmap_object() directly with a NULL object for anonymous mappings. For mappings using a file descriptor, the descriptors fo_mmap() hook is invoked instead. The fo_mmap() hook is responsible for performing type-specific checks and adjustments to arguments as well as possibly modifying mapping parameters such as flags or the object offset. The fo_mmap() hook routines then call vm_mmap_object() to handle the actual mapping. The fo_mmap() hook is optional. If it is not set, then fo_mmap() will fail with ENODEV. A fo_mmap() hook is implemented for regular files, character devices, and shared memory objects (created via shm_open()). While here, consistently use the VM_PROT_* constants for the vm_prot_t type for the 'prot' variable passed to vm_mmap() and vm_mmap_object() as well as the vm_mmap_vnode() and vm_mmap_cdev() helper routines. Previously some places were using the mmap()-specific PROT_* constants instead. While this happens to work because PROT_xx == VM_PROT_xx, using VM_PROT_* is more correct. Differential Revision: https://reviews.freebsd.org/D2658 Reviewed by: alc (glanced over), kib MFC after: 1 month Sponsored by: Chelsio
* Retire the unimplemented MAP_RENAMEjhb2018-08-241-2/+2
| | | | | | | | | and MAP_NORESERVE flags to mmap(2). Older binaries are still permitted to use these flags. PR: 193961 (exp-run in ports) Differential Revision: https://reviews.freebsd.org/D848 Reviewed by: kib
* Add a new fo_fill_kinfo fileops methodjhb2018-08-241-1/+0
| | | | | | | | | | | | | to add type-specific information to struct kinfo_file. - Move the various fill_*_info() methods out of kern_descrip.c and into the various file type implementations. - Rework the support for kinfo_ofile to generate a suitable kinfo_file object for each file and then convert that to a kinfo_ofile structure rather than keeping a second, different set of code that directly manipulates type-specific file information. - Remove the shm_path() and ksem_info() layering violations. Differential Revision: https://reviews.freebsd.org/D775 Reviewed by: kib, glebius (earlier version)
* Add MAP_EXCL flag for mmap(2).kib2018-08-241-0/+1
| | | | | | | | | | | It should be combined with MAP_FIXED, and prevents the request from deleting existing mappings in the region, failing instead. Reviewed by: alc Discussed with: jhb Tested by: markj, pho (previous version, as part of the bigger patch) Sponsored by: The FreeBSD Foundation MFC after: 1 week
* Add a mmap flag (MAP_32BIT) on 64-bit platformsjhb2018-08-241-0/+3
| | | | | | | | | | | | | | to request that a mapping use an address in the first 2GB of the process's address space. This flag should have the same semantics as the same flag on Linux. To facilitate this, add a new parameter to vm_map_find() that specifies an optional maximum virtual address. While here, fix several callers of vm_map_find() to use a VMFS_* constant for the findspace argument instead of TRUE and FALSE. Reviewed by: alc Approved by: re (kib)
* Implement read(2)/write(2) and neccessary lseek(2)kib2018-08-241-0/+7
| | | | | | | | | | | | | for posix shmfd. Add MAC framework entries for posix shm read and write. Do not allow implicit extension of the underlying memory segment past the limit set by ftruncate(2) by either of the syscalls. Read and write returns short i/o, lseek(2) fails with EINVAL when resulting offset does not fit into the limit. Discussed with: alc Tested by: pho Sponsored by: The FreeBSD Foundation
* Add __nl_item to <sys/_types.h> and use itSebastian Huber2018-08-243-5/+5
| | | | | | | | Add __nl_item to <sys/_types.h> for FreeBSD compatibility. Use it in <langinfo.h> and the Cygwin <nl_types.h>. Make the enum __nl_item in <langinfo.h> anonymous. Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
* CYgwin: fix typo in commentCorinna Vinschen2018-08-241-1/+1
| | | | Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* RTEMS: Add __tls_get_addr() to crt0Sebastian Huber2018-08-201-1/+2
| | | | | | | | Add __tls_get_addr() for all targets to crt0. This is not only used on ARM. In particular, it is used on RISC-V. This helps to adequately support the GCC libgomp. Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de
* Cygwin: get_mem_values: Fix prototypeCorinna Vinschen2018-08-171-3/+2
| | | | | | Incomplete change unsigned long -> size_t was only visible on 32 bit, sigh. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Cygwin: document /proc/<PID>/status and /proc/<PID>/statm patchesCorinna Vinschen2018-08-171-0/+3
| | | | Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Cygwin: get_mem_values: Return number of Cygwin pages in argumentsCorinna Vinschen2018-08-171-9/+15
| | | | | | Simplify callers accordingly. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Cygwin: get_mem_values: Convert arguments to call-by-referenceCorinna Vinschen2018-08-171-17/+17
| | | | Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Cygwin: get_mem_values: Return allocation as size_t valuesCorinna Vinschen2018-08-171-18/+15
| | | | | | Use size_t in callers, too. Fix __small_sprintf format specifiers. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Revert "Use allocation granularity as the 'page_size' in /proc/<pid>/status ↵Corinna Vinschen2018-08-171-1/+1
| | | | | | | | | | | as well, for consistency with /proc/<pid>/statm" This reverts commit 8a32c24a7bdb0f3d80daa8f267cc63d15edcf771. Replacing page_size() with allocation_granularity() was incorrect. The values returned by get_mem_values() are # of pages of size page_size(). Multiplying with allocation_granularity() here results in values 16 times too big.
* Cygwin: Add missing items to release notesCorinna Vinschen2018-08-172-0/+9
| | | | Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* setfacl: Rename the option --file to --set-file, as on LinuxKen Brown2018-08-174-4/+11
| | | | Retain --file as an undocumented option for backwards compatibility.
* Fix strtof ("-nan") returns positive NaNMasamichi Hosoda2018-08-161-2/+2
| | | | | | | | | | | | strtof ("-nan") returned positive NaN instead of negative NaN. strtod ("-nan") and strtold ("-nan") return negative NaN. Linux glibc has been fixed that strto{f|d|ld} ("-nan") returns negative NaN. https://sourceware.org/bugzilla/show_bug.cgi?id=23007 This commit makes strtof preserves the negative sign bit when parsing "-nan" like glibc.
* Remove unused NaN's integer representation definitionsMasamichi Hosoda2018-08-166-93/+8
| | | | | | | | By previous commit, strto{d|ld} ("nan") does not use the definition of NaN. There is no other function that uses the definitions. This commit remove the definitions.
* Fix strtod ("nan") and strtold ("nan") returns wrong negative NaNMasamichi Hosoda2018-08-162-9/+2
| | | | | | | | | | | | | | The definition of qNaN for x86_64 and i386 was wrong. strto{d|ld} ("nan") returned wrong negative NaN instead of correct positive NaN since it used the wrong definition. On the other hand, strtof ("nan") returns correct positive NaN since it uses nanf ("") instead of the wrong definition. This commit makes strto{d|ld} ("nan") uses {nan|nanl} ("") like strtof ("nan") using. So strto{d|ld} ("nan") returns positive NaN.
* Improve sincosf commentsWilco Dijkstra2018-08-164-21/+26
| | | | | | | Improve comments in sincosf implementation to make the code easier to understand. Rename the constant pi64 to pi63 since it's actually PI * 2^-63. Add comments for fields of sincos_t structure. Add comments describing implementation details to reduce_fast.
* Cygwin: Add FE_ALL_EXCEPT change to release notes.Corinna Vinschen2018-08-152-0/+6
| | | | Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Keep the denormal-operand exception masked; modify FE_ALL_EXCEPT accordingly.J.H. van de Water2018-08-152-9/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | By excluding the denormal-operand exception from FE_ALL_EXCEPT, it will not be possible anymore to UNmask this exception by means of the API defined by /usr/include/fenv.h Note: terminology has changed since IEEE Std 854-1987; denormalized numbers are called subnormal numbers nowadays. This modification has basically been motivated by the fact that it is also not possible on Linux to manipulate the denormal-operand exception by means of the interface as defined by /usr/include/fenv.h. This has been the state of affairs on Linux since 2001 (Andreas Jaeger). The exceptions required by the standard (IEEE Std 754), in case they can be supported by the implementation, are: FE_INEXACT, FE_UNDERFLOW, FE_OVERFLOW, FE_DIVBYZERO and FE_INVALID. Although it is allowed to define additional exceptions, there is no reason to support the "denormal-operand exception" in this case (fenv.h), because the subnormal numbers can be handled almost as fast the normalized numbers by the hardware of the x86/x86_64 architecture. Said differently, a reason to trap on the input of subnormal numbers does not exist. At least that is what William Kahan and others at Intel asserted around 2000. (that is William Kahan of the K-C-S draft, the precursor to the standard) This commit modifies winsup/cygwin/include/fenv.h as follows: - redefines FE_ALL_EXCEPT from 0x3f to 0x3d - removes the definition for FE_DENORMAL - introduces __FE_DENORM (0x2) (enum in Linux also uses __FE_DENORM) - introduces FE_ALL_EXCEPT_X86 (0x3f), i.e. ALL x86/x86_64 FP exceptions
* Cygwin: Add J.H. van de Water to CONTRIBUTORSCorinna Vinschen2018-08-151-0/+1
| | | | Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Cygwin: fenv.h: Convert to ASCII-onlyCorinna Vinschen2018-08-141-1/+1
| | | | Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Added Restriction on base valueAditya Upadhyay2018-08-131-0/+4
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* Cygwin: utils: ps: use fputs to print fixed stringsCorinna Vinschen2018-08-091-3/+3
| | | | | | Avoid gcc warning "format not a string literal and no format arguments" Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* newlib: strftime: fix over-enthusiastic fix from 0283642f35ceCorinna Vinschen2018-08-081-1/+2
| | | | Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Add BSP and semihosting library for nios2-generic-nommu QEMU emulation.Sandra Loosemore2018-08-0828-0/+5848
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* newlib: don't use __visibility__ attrribute on CygwinCorinna Vinschen2018-08-081-2/+7
| | | | | | gcc doesn't support visibility attribute on PE/COFF platforms Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* newlib: don't check malloc/free pointerCorinna Vinschen2018-08-082-17/+2
| | | | | | use preprocessor check for MALLOC_PROVIDED instead Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* newlib: fix various gcc warningsCorinna Vinschen2018-08-0811-18/+24
| | | | | | | | | * unused variables * potentially used uninitialized * suggested bracketing * misleading indentation Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* newlib: wordexp: drop dangerous fprintfCorinna Vinschen2018-08-081-2/+2
| | | | | | | | wordexp uses fprintf in a dangerous way. It uses an unchecked input string as format string, rather than as parameter to a %s. Replace fprintf with fputs. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Cygwin: utils: strace: fix format stringCorinna Vinschen2018-08-081-1/+1
| | | | | | | %ll is long valid for mingw builds. Use this rather than %I64 to avoid a gcc warning Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Cygwin: utils: change 3rd readlink param to size_tCorinna Vinschen2018-08-082-5/+5
| | | | | | Avoid gcc warnings Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Cygwin: utils: cygcheck: fix filesystem output formatCorinna Vinschen2018-08-081-5/+1
| | | | Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* newlib: newlocale: fix typo rendering ctype_ptr invalidCorinna Vinschen2018-08-081-1/+1
| | | | Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* newlib: strftime: fix gcc warning on __ctlocCorinna Vinschen2018-08-081-5/+3
| | | | Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* RTEMS: Add aligned_alloc() to crt0Sebastian Huber2018-08-081-1/+3
| | | | | | | | This is necessary to build the latest GCC 7 branch. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85904 Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
* Cygwin: implement sched_getcpuCorinna Vinschen2018-08-0710-44/+77
| | | | | | | | * create new function __get_cpus_per_group to evaluate # of CPU groups * Call from format_proc_cpuinfo and sched_getcpu * Bump API minor version Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Declare GNU-specific sched_getcpu()Sebastian Huber2018-08-071-0/+4
| | | | | | This is a glibc extension. Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
* Fix return value on aio_read/write successMark Geisert2018-08-071-4/+4
| | | | | Internally track resultant byte counts as ssize_t, but return 0 as int for success indication, per POSIX.
* Cygwin: Document fegetenv patchCorinna Vinschen2018-08-031-0/+3
| | | | Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Cygwin: fegetenv() should not disable exceptionsJ.H. van de Water2018-08-031-1/+5
| | | | | | | | | | | | | | | fnstenv MUST be followed by fldenv in fegetenv(), as the former disables all exceptions in the x87 FPU, which is not appropriate here (fegetenv() ). fldenv after fnstenv should reload the x87 FPU w/ the configuration that was saved by fnstenv, i.e. a configuration that might have exceptions enabled. Note: x86_64 uses SSE for floating-point, not the x87 FPU. However, because feraiseexcept() attempts to provoke an exception using the x87 FPU, the bug in fegetenv() will make this attempt futile here (x86_64). Note: WoW uses the x87 FPU for floating-point, not SSE. Here anything that would normally result in triggering an exception, not only feraiseexcept(), will not be able to, as result of the bug in fegetenv().
* Patch from Richard Earnshaw <Richard.Earnshaw@arm.com>newlib-snapshot-20180802Jeff Johnston2018-08-011-4/+8
| | | | | * aarch64/cpu-init/rdimon-aem-el3.S (cpu_init_hook): Simplify entry/exit sequences. Add CFI unwind rules.
* RISC-V: Do not use _init/_finiSebastian Huber2018-07-304-11/+16
| | | | | | | Introduce new host configuration variable "have_init_fini" which is set to "yes" by default. Override it for RISC-V to "no". Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
* Add attributes to allocator functionsSebastian Huber2018-07-301-4/+5
| | | | Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
* FreeBSD compat. __alloc_size(), __alloc_align()Sebastian Huber2018-07-302-5/+5
| | | | | | | | Restore FreeBSD compatibility for __alloc_size() and __alloc_align(). This is a follow-up to commit e494b560350cabef94126a4478096aae89ae35a0. Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
* Define a new __alloc_size2 attribute to complement the exiting support.pfg2018-07-301-0/+2
| | | | | | | | | | | | | At least on GCC7 calling __alloc_size(x) twice is not equivalent to calling using the attribute once with two arguments. The later is the documented use in GCC documentation so add a new alloc_size(n, x) alternative to cover for the few places where it is used: basically: calloc(3), reallocarray(3) and mallocarray(9). Submitted by: Mark Millard MFC after: 3 days Reference: http://docs.freebsd.org/cgi/mid.cgi?F227842D-6BE2-4680-82E7-07906AF61CD7
* Remove lint support from system headers and MD x86 headers.kib2018-07-301-15/+3
| | | | | | | Reviewed by: dim, jhb Discussed with: imp Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D13156
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