* basic implementation for pure pascal programs to allocate tls space

* disable generic threadvar handling if section thread vars are available

* properly initialize phdr and phnum

* do not call InitTLS when a compiler is used which does not include the abi tag section

* properly return from the signal handler on ARM/Linux instead of calling
HandleErrorAddrFrame directly (fixes psabieh exception handling, and
generally is cleaner)

+ make use of the mremap syscall of linux to re-allocate large memory blocks faster

* Darwin now uses Mach VM calls for memory allocation instead of mmap/munmap
+ added sysrealloc support for Darwin (Darwin does not have mremap)

* cosmetics: indention

* improved software floating point exception handling in the rtl

Also use syscall_nr_fstatat for FpStat function for riscv32 cpu

+ Enable FPU exception handling for m68k processor

* get paramstr(0) only if really needed

Examine all exception bits in m68k fpsr register to decide which into which run time error it is converted

* attempt at crt1 translation to get freebsd 12 running.

Use same field type and name as in /ust/include/sys/stat.h

* Use off_t type for l_start and l_end fields instead of kernel_off_t
+ Distinguish rlim_t type depending on fs32bit macro being set or not.

* fix O_LARGEFILE for Aarch64, RISC-V 32-bit and RISC-V 64-bit

F_GetLk/SetLk have different values for sparc/sparc64

* rename local import of fpc_geteipasebx

* fpc_geteipasebx and fpc_geteipasecx are used as procedures, not functions, so declare them as such

* linux-m68k: depend on FPU defines to compile FPU code, instead of CPU68020. also, minor cosmetics

* linux: fix some formatting in ostypes.inc, no functional change

* linux: use ugetrlimit syscall on m68k for rlimits retrieval. this fixes fpgetrlimit() call, and stack checking on Linux/m68k (tstack.pp test), at least on anything newer than kernel 2.4+ (2001)

* Do_IsDevice treats pipes and sockets the same way as character devices

Do not set __USE_LARGEFILE64 macro for sparc CPU, as it does not seem to be used for regular linux kernels

Add handling of extra parameters, using eval if equal sign is found.
+ Add TMP_DIR variable and use it.
* Only remove temp files if verbose is not set.

Use RTE 207 for FPU_Invalid and FPU_Denormal exceptions on i386/x86_64 beos/haiku/*bsd as for Linux

Fix typo in script comment

Fix compilation failure of i386-netbsd target after last commit

Unix LocalToEpoch: fix typo

* remove the BaseUnix dependency added by mistake

Add some types and records to rtl/linux/t_linux.h2paschk and set macro _LARGEFILE64_SOURCE for __i386__ C code

* remove unused file

* cwstring: try to load the iconv library with .6 suffix as well

* cwstring: open iconv with the transliterate flag instead of setting it later with iconvctl because it may be unavailable

* revert 0047631: cwstring: open iconv with the transliterate flag instead of setting it later with iconvctl because it may be unavailable

* cwstring: open iconv with the transliterate flag if iconvctl is not available

+ linux implementation of System.GetCPUCount

* if the Linux target is compiled with FPC_USE_LIBC the initialization of TLS is not required (according to one comment by Florian), so disable all related code in that case (as for example the syscall numbers are not available then)

+ add declaration of FpSchedGetAffinity when the Linux target is compiled with FPC_USE_LIBC

Also set __stkptr inside cprt0.as startup assembly source

Also set __stkptr inside cprt0.as and dllprt0.as startup assembly sources

* x86_64-linux: assembler helpers syscalls do not need a stackframe

* FPC_VERSION => FPC_FULLVERSION

* another FPC_VERSION => FPC_FULLVERSIOn fix
* switch back to 32 Bit mode if no thumb code is generated

* arm-linux: sighnd.inc must check for CPUTHUMB and CPUTHUMB2

* fix compilation for CPUs without thumb

+ RiscV: set threadvarblocksize
* sanity check if threadvarblocksize is really set

* mips and xtensa compilation fixed

* fix for Mantis 0037252: apply patch by Bi0T1N to implement TThread.NameThreadForDebugging for Mac OS X 10.6 and newer (older versions don't provide the required functions)

Fix compilation with 3.2.2 release for arm and i386 CPUs

+ added baud rate constants for arm as proposed by Piotr Kardasz in 0039101

* indention fixed

* check paramstr argument for negative values, resolves gitlab 0039410

FreeBSD CSU fixes

* Assembler blocks in non-pure assembler functions must always declare all
changed registers
* argc is read as *(long*) in C -> changed plongint to pptrint
* fixed ident section

LLVM: add Read/WritePort* implementations

Fixes Unix graph compilation on x86 with LLVM

* clean up of assembler files not used anymore

* powerpc64-linux: unused assembler loader files removed

+ additional skeleton files for mips64

Disable range and overflow checks inside detect_linuxvcs procedure

* make __lib_csu* weak symbols on m68k-linux

Darwin: use recent versions of stat(fs) records when available

When the RTL is built for Mac OS X 10.6 or newer, use the new versions
and the corresponding alternate system library functions.

Also extracted the Darwin stat record definition to reduce the
ifdef hell.

Darwin: fix compilation on macOS/AArch64 after 1f328cf3

No function suffixes there since there's no backward compatibility issue.

m68k-linux: try to be as ColdFire compatible in the startup code as possible, so explicitly use jsr, otherwise this might compile to a long bsr, that is not CF compatible (except cfv4)

FPU exception mask: generlised system unit interface

* Extra linux fcntl constants

Linux: fix pthread types

Remove legacy implementation-specific fields (they don't match the current
glibc fields anymore since a long time) and fix alignment fields (they are
union fields that overlap with the rest of the record).

All platforms now use the modern opaque array-based definitions.

Linux mutex: restored the __m_kind field

This particular field is at the same offset on all architectures with the same
bit width, and is guaranteed by glibc to remain at this offset for backward
compatibility with static initialisers.

Resolves gitlab 0040021

* Char -> AnsiChar

* Char -> AnsiChar

* Char -> AnsiChar

* string -> shortstring

* string -> shortstring

* string -> shortstring

* move $H here

* Remove use of internal conversion routines

Both _STAT_VER_KERNEL and _STAT_VER_LINUX are equal to zero for aarch64-linux

* cleanup of outdated defines

* fix of Erroneous reading of the value of the StackLength variable at program start based on issue report by Sergey Larin, resolves gitlab 0040211

Try to implement linux si_uc.inc for xtensa CPU

Attempt to use local _init and _fini procedures

Support use statx syscall in fpstat and fpfstat

fix when FPC_USE_LIBC is disabled not call PASCALMAIN

fix store stacklength but not its addr in info

Use prlimit64 in FpSetRLimit and FpSetRLimit

Set STACK_MARGIN_MAX to four times of pagesize on LoongArch64

It fixed a test named tstack. Actually, Linux user get the stacktop is
incorrect in current. The value of stack pointer when enter the procedure
is thought as it is in the highest stack page. But if the parameters is
enough large, lager than 16k, most of arch will also fail this test.
Since the LoongArch default pagesize is 16k, it fail often because
stack-layout-randomization causes the stackpointer underflow to next page.
I had tried fixed it in rtl/linux/[arch]/si_*. But because the codes is
unworthy and hardly the parameters is enough large, just expand
STACK_MARGIN_MAX for simplicity.

* Fix for i386 breakage after merge request !433

* Additional fix

Sockets errors redefined as regular Berkeley error constants also for Linux + add EINTR for Win

* Small improvement in inittls. Fixes issue 40408

Use frame register $r22 (aliased as $fp) inside SignalToRunerror for loongarch64 CPU to fix backtrace dumps

Modify references to old syslinux unit in comments

* Ensure null-terminated strings. Patch by modersohn, fixes issue gitlab 0040499

* Do not use namespace prefix for lnfodwarf

* Add pthread_mutex_timedlock, sem_timedwait may be needed in future

*

* ensure that the SysCall unit is also usable when FPC_USE_LIBC is defined

Fix compilation of syscall unit for Linux with -dFPC_USE_LIBC option

Fix syscall unit compilation for i386-linux using -dFPC_USE_LIBC

Add dependency on objpas unit for syscall unit compiled with -dFPC_USE_LIBC

+ support for fputimens on non-linux OSes
* reworked fputimens support on linux
+ FileSetDate for all unix OSes

Avoid double declaration of seterrno

Examinc OPT and CROSSOPT instead of FPCOPT in [prerules] to check if syscall unit needs objpas dependency

Add missing syscall_nr_futimens for NetBSD OS

* fix bootstrapping with with 3.2.2 and -dFPC_USE_LIBC

* fix utimensat and utimensat if the rtl is compiled with -dFPC_USE_LIBC