summaryrefslogtreecommitdiffstats
path: root/lib/libc/arm
Commit message (Collapse)AuthorAgeFilesLines
* MFC r313873:mmel2017-04-161-0/+5
| | | | Publish fp[get][set]sticky() for ARMv6.
* MFC r313823,r313866:mmel2017-04-163-1/+60
| | | | | | | r313823: Pull in r285478 from upstream compiler-rt trunk (by Saleem Abdulrasool): r313866: Publish __aeabi_uidiv and __aeabi_idiv as compatible symbols from libc.
* MFC r314556-r314558brooks2017-03-112-5/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | r314556: Correct MDSRCS use in <arch>/string/Makefile.inc. - Remove .c files which duplicate entries in MISRCS. - Use the same, less merge conflict prone style in all cases. - Use MDSRCS for mips (.c and .S files both ended up in SRCS). - Remove pointless sparc64 Makefile.inc. - Remove uninformative foreign VCS ID entries. Reviewed by: emaste, imp, jhb MFC after: 1 week Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D9841 r314557: Correct an misunderstanding of MDSRCS. MDSRCS it intended to allow assembly versions of funtions with C implementations listed in MISRCS. The selection of the correct machdep_ldis?.c for a given architecture does not follow this pattern and the file should be added to SRCS directly. Reviewed by: emaste, imp, jhb MFC after: 1 week Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D9841 r314558: Garbage collect unused gdtoa related files on mips. Reviewed by: emase, imp, jhb MFC after: 1 week Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D9841
* MFC r312332,r312446,r312451:ngie2017-02-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | r312332: Use SRCTOP where possible and use :H to manipulate .CURDIR to get rid of unnecessarily long relative path .PATH values with make r312446 (by emaste): libc: remove reference to nonexistent lib/locale directory As far as I can tell this was introduced in r72406 and updated in several subsequent revisions, but the lib/locale directory it referenced never existed. r312451: Replace dot-dot relative pathing with SRCTOP-relative paths where possible This reduces build output, need for recalculating paths, and makes it clearer which paths are relative to what areas in the source tree. The change in performance over a locally mounted UFS filesystem was negligible in my testing, but this may more positively impact other filesystems like NFS. LIBC_SRCTOP was left alone so Juniper (and other users) can continue to manipulate lib/libc/Makefile (and other Makefile.inc's under lib/libc) as include Makefiles with custom options. Discussed with: marcel, sjg
* MFC r304285:kib2016-09-161-6/+9
| | | | Implement userspace gettimeofday(2) with HPET timecounter.
* MFC r304928:kib2016-09-032-52/+1
| | | | | | | | | | | | | Do not obliterate errno value in the main thread during ptrace(2) call on x86. MFC r304931: Follow ABI when calling __error from the ptrace(2) wrapper. MFC r305012: Rewrite ptrace(2) wrappers in C. MFC r305022: Restore the requirement of setting errno to zero before calling ptrace(2).
* Replace use of the pipe(2) system call with pipe2(2) with a zero flagsbrooks2016-06-222-54/+1
| | | | | | | | | | | | | | | | value. This eliminates the need for machine dependant assembly wrappers for pipe(2). It also make passing an invalid address to pipe(2) return EFAULT rather than triggering a segfault. Document this behavior (which was already true for pipe2(2), but undocumented). Reviewed by: andrew Approved by: re (gjb) Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D6815
* Make armv6 hard float abi by default. Kill armv6hf.imp2016-05-183-4/+5
| | | | | | | Allow CPUTYPE=soft to build the current soft-float abi libraries. Add UPDATING entry to announce this. Approved by: re@ (gjb)
* Revert a change that sneeked with 297619andrew2016-04-061-3/+1
|
* Disable support for compat syscalls on arm64. These symbols were neverandrew2016-04-061-1/+3
| | | | | | | shipped since arm64 exists only on 11+. Submitted by: brooks Reviewed by: emaste, imp
* libc: stop exporting cerroremaste2016-03-301-1/+0
| | | | | | | | | | i386 stopped exporting .cerror in r240152, and likewise for amd64 in r240178. It is not used by other libraries on any platform, so apply the same change to the remaining architectures. Reviewed by: jhibbits, jilles Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D5774
* libc: stop exporting curbrk and minbrk in the private namespaceemaste2016-03-241-2/+0
| | | | | | | | | They are not used anywhere else in the base system and are an internal implementation detail that does not need to be exposed. Reviewed by: kib Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D5728
* Do not compile ARMv6 instructions on ARMv4/v5. Although clang is finekib2015-12-241-0/+7
| | | | | | | | with mrrc, gcc is not. The disabled code is not executed on ARMv4 anyway. Reported and reviewed by: ian Sponsored by: The FreeBSD Foundation
* Add support for usermode (vdso-like) gettimeofday(2) andkib2015-12-072-1/+80
| | | | | | | | | | | | | | | | | | clock_gettime(2) on ARMv7 and ARMv8 systems which have architectural generic timer hardware. It is similar how the RDTSC timer is used in userspace on x86. Fix a permission problem where generic timer access from EL0 (or userspace on v7) was not properly initialized on APs. For ARMv7, mark the stack non-executable. The shared page is added for all arms (including ARMv8 64bit), and the signal trampoline code is moved to the page. Reviewed by: andrew Discussed with: emaste, mmel Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D4209
* Annotate arm userspace assembler sources stating their tolerance tokib2015-09-2929-0/+55
| | | | | | | the non-executable stack. Reviewed by: andrew Sponsored by: The FreeBSD Foundation
* Add include for declaration of _set_tp(). Eliminates -Wmissing-prototypes ↵rodrigc2015-09-201-0/+1
| | | | warnings.
* Export the ARM __aeabi_mem* functions from libc, they are needed by the gccandrew2015-06-162-8/+17
| | | | | | | from ports as it doesn't include these in the copy of libgcc it installs uses. Obtained from: ABT Systems Ltd
* Add the needed if-then instructions to build as Thumb-2.andrew2015-05-316-0/+53
|
* Remove __ARM_EABI__ from more places in libc as this is the only ARM ABIandrew2015-05-313-19/+7
| | | | we support.
* Use a register to set the cpsr bits. The ip register is safe to be changedandrew2015-05-312-8/+12
| | | | | | | | within all of these functions, and is only stored in some to correctly pad the stack. This will be needed to build as Thumb-2 as, unlike with ARM instructions, the msr instruction only takes a register as the input.
* Removed unused special fork() implementations.brooks2015-05-291-49/+0
| | | | | | | | | | | The arm version hasn't been used in ages. The mips version uses a valid, but pointless check of v1 and has been unhooked from the build since r276630. Differential Revision: https://reviews.freebsd.org/D2592 Reviewed by: emaste Sponsored by: DARPA, AFRL
* Teach bits of libc about Thumb. This adds the if-then instructions neededandrew2015-05-125-4/+48
| | | | | | | | | to handle the ARM conditional execution. While here fix a bug found by this in the hard-float code, cc is the opposite of cs. The former is used for 'less than' in floating-point code and is executed when the C (carry) bit is clear, the latter is used when greater than, equal, or unordered, and is executed when the C bit is set.
* Use the GOT_* macros to help simplify the code, these work with both picandrew2015-05-112-26/+9
| | | | and non-pic code, and to build for Thumb.
* The lseek(2), mmap(2), truncate(2), ftruncate(2), pread(2), andkib2015-04-181-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | pwrite(2) syscalls are wrapped to provide compatibility with pre-7.x kernels which required padding before the off_t parameter. The fcntl(2) contains compatibility code to handle kernels before the struct flock was changed during the 8.x CURRENT development. The shims were reasonable to allow easier revert to the older kernel at that time. Now, two or three major releases later, shims do not serve any purpose. Such old kernels cannot handle current libc, so revert the compatibility code. Make padded syscalls support conditional under the COMPAT6 config option. For COMPAT32, the syscalls were under COMPAT6 already. Remove WITHOUT_SYSCALL_COMPAT build option, which only purpose was to (partially) disable the removed shims. Reviewed by: jhb, imp (previous versions) Discussed with: peter Sponsored by: The FreeBSD Foundation MFC after: 1 week
* libc: Eliminate duplicate copies of __vdso_gettc.cemaste2015-04-022-49/+1
| | | | | Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D2152
* Remove duplicate copies of trivial getcontextx.cemaste2015-01-122-78/+3
| | | | | | | | | | Only i386 and amd64 provide a non-trivial __getcontextx(). Use a common trivial implementation in gen/ for other architectures, rather than copying the file to each MD subdirectory. Reviewed by: kib Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D1472
* Apparently more Makefiles use stuff from compiler-rt, so fix them updim2015-01-081-1/+1
| | | | too. (This did not show during a make universe, strangely.)
* Switch to the ARM unified assembly language as the clang integrated as onlyandrew2014-11-297-123/+138
| | | | | | | supports it. Binutils supports it when the ".syntax unified" directive is set. Sponsored by: ABT Systems Ltd
* Add support for the __aeabi_c*cmp* functions. These are similar to theandrew2014-10-148-1/+337
| | | | | | | | | existing functions with the exception they use the condition flags to store the result. Differential Revision: https://reviews.freebsd.org/D872 Silence from: current@ and numerics@ MFC after: 1 week
* Clean up detection of hard-float ABIs. As with big-endian in r272368 weandrew2014-10-012-2/+2
| | | | can check against arm*hf*.
* Remove MK_ARM_EABI, the armeb issues have been fixed. The code to supportandrew2014-10-013-25/+0
| | | | | | | | | | | | the oabi is still in the tree, but it is expected this will be removed as developers work on surrounding code. With this commit the ARM EABI is the only supported supported ABI by FreeBSD on ARMa 32-bit processors. X-MFC after: never Relnotes: yes Differential Revision: https://reviews.freebsd.org/D876
* Add the fp{get,set}{mask,round} functions to the public symbols in the map.andrew2014-09-052-0/+14
| | | | | These are only exported for armv6hf as the soft-float ABIs have these in the softfloat Symbol.map file.
* In ARM asm code, ensure that every ENTRY(foo) has a matching END(foo).ian2014-08-3122-1/+36
| | | | | | | | | The EABI unwind info requires a .fnend for every .fnstart, and newer binutils will complain about seeing two .fnstart in a row. This change allows newer tools to compile our code. Reported by: bapt Reviewed by: imp
* From https://sourceware.org/ml/newlib/2014/msg00113.htmlimp2014-08-141-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | By Richard Earnshaw at ARM > >GCC has for a number of years provides a set of pre-defined macros for >use with determining the ISA and features of the target during >pre-processing. However, the design was always somewhat cumbersome in >that each new architecture revision created a new define and then >removed the previous one. This meant that it was necessary to keep >updating the support code simply to recognise a new architecture being >added. > >The ACLE specification (ARM C Language Extentions) >(http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.set.swdev/index.html) >provides a much more suitable interface and GCC has supported this >since gcc-4.8. > >This patch makes use of the ACLE pre-defines to map to the internal >feature definitions. To support older versions of GCC a compatibility >header is provided that maps the traditional pre-defines onto the new >ACLE ones. Stop using __FreeBSD_ARCH_armv6__ and switch to __ARM_ARCH >= 6 in the couple of places in tree. clang already implements ACLE. Add a define that says we implement version 1.1, even though the implementation isn't quite complete.
* Add dl_unwind_find_exidx() for ARM EABI, required for C++ exceptionian2014-07-193-1/+111
| | | | | | | | | | | | | | | | handling. For statically linked apps this uses the __exidx_start/end symbols set up by the linker. For dynamically linked apps it finds the shared object that contains the given address and returns the location and size of the exidx section in that shared object. The dl_unwind_find_exidx() name is used by other BSD projects and Android, and is mentioned in clang 3.5 comments as "the BSD interface" for finding exidx data. GCC (in libgcc_s) expects the exact same API and functionality to be provided by a function named __gnu_Unwind_Find_exidx(), so we provide that with an alias ("strong reference"). Reviewed by: kib@ MFC after: 1 week
* Set the new floating point exception mask correctlyandrew2014-04-281-1/+1
| | | | Submitted by: Keith White <kwhite@site.uottawa.ca>
* Rename the fp{get,set}* files so they no longer conflict with the softfloatandrew2014-04-217-2/+2
| | | | | version of these files. Keep them within this directory so they can be used to implement the armv6 version of these functions.
* Add the deprecated fp{get,set}* functions, a few ports use them.andrew2014-04-207-0/+304
|
* Convert from WITHOUT_SYSCALL_COMPAT to MK_SYSCALL_COMPAT.imp2014-04-051-1/+1
|
* Add a new ARM TARGET_ARCH, armv6hf. This is considered experimental.andrew2014-03-231-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | This targets the existing ARMv6 and ARMv7 SoCs that contain a VFP unit. This is an optional coprocessors may not be present in all devices, however it appears to be in all current SoCs we support. armv6hf targets the VFP variant of the ARM EABI and our copy of gcc is too old to support this. Because of this there are a number of WITH/WITHOUT options that are unsupported and must be left as the default value. The options and their required value are: * WITH_ARM_EABI * WITHOUT_GCC * WITHOUT_GNUCXX In addition, without an external toolchain, the following need to be left as their default: * WITH_CLANG * WITH_CLANG_IS_CC As there is a different method of passing float and double values to functions the ABI is incompatible with existing armv6 binaries. To use this a full rebuild of world is required. Because no floating point values are passed into the kernel an armv6 kernel with VFP enabled will work with an armv6hf userland and vice versa.
* Implement __flt_rounds for ARMv6 hard-float. The fpscr register stores theandrew2014-03-221-10/+14
| | | | current rounding mode used by the VFP unit.
* Remove an extra 1 in an #if lineandrew2014-03-161-1/+1
| | | | Reported by: ian@
* Fix the spelling of function.andrew2014-03-162-2/+2
| | | | Reported by: ian@
* Add an optimised version of the float and double helper functions. Theseandrew2014-03-166-124/+537
| | | | | | | are only used on armv6 when the vfp unit is detected. They will also be available for the upcoming armv6hf platform, however while not used by default there will need to be defined for any software that calls them directly.
* Export _libc_arm_fpu_present as a private symbol to be used by otherandrew2014-03-111-0/+2
| | | | system libraries, for example libm.
* Replace use of ${.CURDIR} by ${LIBC_SRCTOP} and define ${LIBC_SRCTOP}marcel2014-03-042-6/+6
| | | | | | | | | | | if not already defined. This allows building libc from outside of lib/libc using a reach-over makefile. A typical use-case is to build a standard ILP32 version and a COMPAT32 version in a single iteration by building the COMPAT32 version using a reach-over makefile. Obtained from: Juniper Networks, Inc.
* On ARM EABI double precision floating point values are stored in theandrew2013-09-073-3/+3
| | | | | | endian the CPU is in, i.e. little-endian on most ARM cores. This allows ARMv4 and ARMv5 boards to boot with the ARM EABI.
* Teach siglongjmp about the VFP version of the setjmp buffer.andrew2013-07-211-3/+5
| | | | | This fixes a bug where a call to sigsetjmp followed by siglongjmp may fail when run on a machine with VFP enabled.
* Finish pulling in the NetBSD setjmp/longjmp updates on ARM.andrew2013-06-074-4/+162
| | | | | | | | Store/restore the VFP registers in setjmp/longjmp on ARM EABI if VFP is enabled in the kernel. It checks the hw.floatingpoint sysctl to see if floating-point is available and uses this to determine if it should store them. If it does it uses a different magic value so longjmp is able to know if it should load them.
* Include machine/setjmp.h to get the definition of _JB_MAGIC__SETJMP. Thisandrew2013-06-071-1/+3
| | | | allows us to remove it from the ARM copy of machine/asm.h.
OpenPOWER on IntegriCloud