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* htl: move pthread_self info libc.Guy-Fleury Iteriteka2023-04-052-2/+2
| | | | | Signed-off-by: Guy-Fleury Iteriteka <gfleury@disroot.org> Message-Id: <20230318095826.1125734-4-gfleury@disroot.org>
* htl: move ___pthread_self into libc.Guy-Fleury Iteriteka2023-04-053-2/+25
| | | | | | | | | | | sysdeps/mach/hurd/htl/pt-pthread_self.c: New file. htl/Makefile: .. Add it to libc routine. sysdeps/mach/hurd/htl/pt-sysdep.c(__pthread_self): Remove it. sysdeps/mach/hurd/htl/pt-sysdep.h(__pthread_self): Add hidden propertie. htl/Versions(__pthread_self) Version it as private symbol. Signed-off-by: Guy-Fleury Iteriteka <gfleury@disroot.org> Message-Id: <20230318095826.1125734-3-gfleury@disroot.org>
* hurd: Add vm_param.h for x86_64Sergey Bugaev2023-04-031-0/+24
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-30-bugaevc@gmail.com>
* hurd: Implement _hurd_longjmp_thread_state for x86_64Sergey Bugaev2023-04-031-0/+41
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-29-bugaevc@gmail.com>
* htl: Implement thread_set_pcsptp for x86_64Sergey Bugaev2023-04-031-0/+73
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-23-bugaevc@gmail.com>
* hurd: Move a couple of signal-related files to x86Sergey Bugaev2023-04-032-0/+0
| | | | | | | These do not need any changes to be used on x86_64. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-20-bugaevc@gmail.com>
* hurd: Use uintptr_t for register values in trampoline.cSergey Bugaev2023-04-031-7/+6
| | | | | | | | | | | | This is more correct, if only because these fields are defined as having the type unsigned int in the Mach headers, so casting them to a signed int and then back is suboptimal. Also, remove an extra reassignment of uesp -- this is another remnant of the ecx kludge. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-16-bugaevc@gmail.com>
* hurd: Move rtld-strncpy-c.c out of mach/hurd/Sergey Bugaev2023-04-031-1/+0
| | | | | | | | There's nothing Mach- or Hurd-specific about it; any port that ends up with rtld pulling in strncpy will need this. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-15-bugaevc@gmail.com>
* hurd: More 64-bit integer casting fixesSergey Bugaev2023-04-032-4/+4
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-13-bugaevc@gmail.com>
* mach, hurd: Drop __libc_lock_self0Sergey Bugaev2023-04-033-8/+3
| | | | | | | | | | | This was used for the value of libc-lock's owner when TLS is not yet set up, so THREAD_SELF can not be used. Since the value need not be anything specific -- it just has to be non-NULL -- we can just use a plain constant, such as (void *) 1, for this. This avoids accessing the symbol through GOT, and exporting it from libc.so in the first place. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-12-bugaevc@gmail.com>
* hurd: Remove __hurd_threadvar_stack_{offset,mask}Sergey Bugaev2023-04-034-26/+2
| | | | | | | | | | | Noone is or should be using __hurd_threadvar_stack_{offset,mask}, we have proper TLS now. These two remaining variables are never set to anything other than zero, so any code that would try to use them as described would just dereference a zero pointer and crash. So remove them entirely. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230319151017.531737-6-bugaevc@gmail.com>
* libio: Do not autogenerate stdio_lim.hAdhemerval Zanella Netto2023-03-271-0/+28
| | | | | | | | | | | | | Instead define the required fields in system dependend files. The only system dependent definition is FILENAME_MAX, which should match POSIX PATH_MAX, and it is obtained from either kernel UAPI or mach headers. Currently set pre-defined value from current kernels. It avoids a circular dependendy when including stdio.h in gen-as-const-headers files. Checked on x86_64-linux-gnu and i686-linux-gnu Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Move libc_freeres_ptrs and libc_subfreeres to hidden/weak functionsAdhemerval Zanella Netto2023-03-271-1/+0
| | | | | | | | | | | | | | | | | | | | They are both used by __libc_freeres to free all library malloc allocated resources to help tooling like mtrace or valgrind with memory leak tracking. The current scheme uses assembly markers and linker script entries to consolidate the free routine function pointers in the RELRO segment and to be freed buffers in BSS. This patch changes it to use specific free functions for libc_freeres_ptrs buffers and call the function pointer array directly with call_function_static_weak. It allows the removal of both the internal macros and the linker script sections. Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* C2x scanf binary constant handlingJoseph Myers2023-03-021-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | C2x adds binary integer constants starting with 0b or 0B, and supports those constants for the %i scanf format (in addition to the %b format, which isn't yet implemented for scanf in glibc). Implement that scanf support for glibc. As with the strtol support, this is incompatible with previous C standard versions, in that such an input string starting with 0b or 0B was previously required to be parsed as 0 (with the rest of the input potentially matching subsequent parts of the scanf format string). Thus this patch adds 12 new __isoc23_* functions per long double format (12, 24 or 36 depending on how many long double formats the glibc configuration supports), with appropriate header redirection support (generally very closely following that for the __isoc99_* scanf functions - note that __GLIBC_USE (DEPRECATED_SCANF) takes precedence over __GLIBC_USE (C2X_STRTOL), so the case of GNU extensions to C89 continues to get old-style GNU %a and does not get this new feature). The function names would remain as __isoc23_* even if C2x ends up published in 2024 rather than 2023. When scanf %b support is added, I think it will be appropriate for all versions of scanf to follow C2x rules for inputs to the %b format (given that there are no compatibility concerns for a new format). Tested for x86_64 (full glibc testsuite). The first version was also tested for powerpc (32-bit) and powerpc64le (stdio-common/ and wcsmbs/ tests), and with build-many-glibcs.py.
* hurd: Remove the ecx kludgeSergey Bugaev2023-03-022-43/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "We don't need it any more" The INTR_MSG_TRAP macro in intr-msg.h used to play little trick with the stack pointer: it would temporarily save the "real" stack pointer into ecx, while setting esp to point to just before the message buffer, and then invoke the mach_msg trap. This way, INTR_MSG_TRAP reused the on-stack arguments laid out for the containing call of _hurd_intr_rpc_mach_msg (), passing them to the mach_msg trap directly. This, however, required special support in hurdsig.c and trampoline.c, since they now had to recognize when a thread is inside the piece of code where esp doesn't point to the real tip of the stack, and handle this situation specially. Commit 1d20f33ff4fb634310f27493b7b87d0b20f4a0b0 has removed the actual temporary change of esp by actually re-pushing mach_msg arguments onto the stack, and popping them back at end. It did not, however, deal with the rest of "the ecx kludge" code in other files, resulting in potential crashes if a signal arrives in the middle of pushing arguments onto the stack. Fix that by removing "the ecx kludge". Instead, when we want a thread to skip the RPC, but cannot make just make it jump to after the trap since it's not done adjusting the stack yet, set the SYSRETURN register to MACH_SEND_INTERRUPTED (as we do anyway), and rely on the thread itself for detecting this case and skipping the RPC. This simplifies things somewhat and paves the way for a future x86_64 port of this code. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230301162355.426887-1-bugaevc@gmail.com>
* hurd: Implement TLS for x86_64Sergey Bugaev2023-02-272-1/+228
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230221211932.296459-4-bugaevc@gmail.com>
* htl: Make pthread_mutex_t pointer-alignedSergey Bugaev2023-02-271-5/+8
| | | | | | | | This is for future-proofing. On i386, it is 4-byte aligned anyway, but on x86_64, we want it 8-byte aligned, not 4-byte aligned. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230214173722.428140-4-bugaevc@gmail.com>
* hurd: Generalize init-first.c to support x86_64Sergey Bugaev2023-02-241-0/+6
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230223151436.49180-2-bugaevc@gmail.com>
* hurd: Simplify init-first.c furtherSergey Bugaev2023-02-244-140/+68
| | | | | | | | This drops all of the return address rewriting kludges. The only remaining hack is the jump out of a call stack while adjusting the stack pointer. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
* hurd: Mark some audit tests as unsupportedSamuel Thibault2023-02-241-0/+10
| | | | They hang the testsuite.
* htl: Mark select loop test as unsupportedSamuel Thibault2023-02-241-0/+6
| | | | It overflows pflocal and doesn't manage to terminate.
* hurd: Mark RLIMIT_AS tests as unsupportedSamuel Thibault2023-02-241-0/+11
| | | | Otherwise they put the system on its knees.
* Define PC, SP and SYSRETURN for hurd x86_64Flavio Cruz2023-02-201-3/+9
| | | | | | Moved thread_state.h to x86 directory since we only need to customize those 3 definitions. Message-Id: <Y+x4xrsDMkAomncO@jupiter.tail36e24.ts.net>
* hurd: Simplify init-first.c a bitSergey Bugaev2023-02-201-16/+7
| | | | | | | | And make it a bit more 64-bit ready. This is in preparation to moving this file into x86/ Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230218203717.373211-6-bugaevc@gmail.com>
* hurd: Make timer_t pointer-sizedSergey Bugaev2023-02-201-1/+1
| | | | | | | | This ensures that a timer_t value can be cast to struct timer_node * and back. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230218203717.373211-5-bugaevc@gmail.com>
* hurd: Fix xattr function return typeSergey Bugaev2023-02-205-5/+5
| | | | | | | They all return int, not size_t. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230218203717.373211-4-bugaevc@gmail.com>
* hurd: Use proper integer typesSergey Bugaev2023-02-205-7/+11
| | | | | | | | Fix a few more cases of build errors caused by mismatched types. This is a continuation of f4315054b46d5e58b44a709a51943fb73f846afb. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230218203717.373211-3-bugaevc@gmail.com>
* hurd: Move thread state manipulation into _hurd_tls_new ()Sergey Bugaev2023-02-201-5/+20
| | | | | | | This is going to be done differently on x86_64. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230218203717.373211-2-bugaevc@gmail.com>
* [hurd] Fix i686 build breakage caused by 4fedebc91108Flavio Cruz2023-02-173-4/+4
| | | | Message-Id: <Y+8bqZzYTl7WaUm7@jupiter.tail36e24.ts.net>
* C2x strtol binary constant handlingJoseph Myers2023-02-161-0/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | C2x adds binary integer constants starting with 0b or 0B, and supports those constants in strtol-family functions when the base passed is 0 or 2. Implement that strtol support for glibc. As discussed at <https://sourceware.org/pipermail/libc-alpha/2020-December/120414.html>, this is incompatible with previous C standard versions, in that such an input string starting with 0b or 0B was previously required to be parsed as 0 (with the rest of the string unprocessed). Thus, as proposed there, this patch adds 20 new __isoc23_* functions with appropriate header redirection support. This patch does *not* do anything about scanf %i (which will need 12 new functions per long double variant, so 12, 24 or 36 depending on the glibc configuration), instead leaving that for a future patch. The function names would remain as __isoc23_* even if C2x ends up published in 2024 rather than 2023. Making this change leads to the question of what should happen to internal uses of these functions in glibc and its tests. The header redirection (which applies for _GNU_SOURCE or any other feature test macros enabling C2x features) has the effect of redirecting internal uses but without those uses then ending up at a hidden alias (see the comment in include/stdio.h about interaction with libc_hidden_proto). It seems desirable for the default for internal uses to be the same versions used by normal code using _GNU_SOURCE, so rather than doing anything to disable that redirection, similar macro definitions to those in include/stdio.h are added to the include/ headers for the new functions. Given that the default for uses in glibc is for the redirections to apply, the next question is whether the C2x semantics are correct for all those uses. Uses with the base fixed to 10, 16 or any other value other than 0 or 2 can be ignored. I think this leaves the following internal uses to consider (an important consideration for review of this patch will be both whether this list is complete and whether my conclusions on all entries in it are correct): benchtests/bench-malloc-simple.c benchtests/bench-string.h elf/sotruss-lib.c math/libm-test-support.c nptl/perf.c nscd/nscd_conf.c nss/nss_files/files-parse.c posix/tst-fnmatch.c posix/wordexp.c resolv/inet_addr.c rt/tst-mqueue7.c soft-fp/testit.c stdlib/fmtmsg.c support/support_test_main.c support/test-container.c sysdeps/pthread/tst-mutex10.c I think all of these places are OK with the new semantics, except for resolv/inet_addr.c, where the POSIX semantics of inet_addr do not allow for binary constants; thus, I changed that file (to use __strtoul_internal, whose semantics are unchanged) and added a test for this case. In the case of posix/wordexp.c I think accepting binary constants is OK since POSIX explicitly allows additional forms of shell arithmetic expressions, and in stdlib/fmtmsg.c SEV_LEVEL is not in POSIX so again I think accepting binary constants is OK. Functions such as __strtol_internal, which are only exported for compatibility with old binaries from when those were used in inline functions in headers, have unchanged semantics; the __*_l_internal versions (purely internal to libc and not exported) have a new argument to specify whether to accept binary constants. As well as for the standard functions, the header redirection also applies to the *_l versions (GNU extensions), and to legacy functions such as strtoq, to avoid confusing inconsistency (the *q functions redirect to __isoc23_*ll rather than needing their own __isoc23_* entry points). For the functions that are only declared with _GNU_SOURCE, this means the old versions are no longer available for normal user programs at all. An internal __GLIBC_USE_C2X_STRTOL macro is used to control the redirections in the headers, and cases in glibc that wish to avoid the redirections - the function implementations themselves and the tests of the old versions of the GNU functions - then undefine and redefine that macro to allow the old versions to be accessed. (There would of course be greater complexity should we wish to make any of the old versions into compat symbols / avoid them being defined at all for new glibc ABIs.) strtol_l.c has some similarity to strtol.c in gnulib, but has already diverged some way (and isn't listed at all at https://sourceware.org/glibc/wiki/SharedSourceFiles unlike strtoll.c and strtoul.c); I haven't made any attempts at gnulib compatibility in the changes to that file. I note incidentally that inttypes.h and wchar.h are missing the __nonnull present on declarations of this family of functions in stdlib.h; I didn't make any changes in that regard for the new declarations added.
* mach: undef ENTRY2Sergey Bugaev2023-02-141-0/+1
| | | | | | | | This macro from Mach headers conflicts with how sysdeps/x86_64/multiarch/strcmp-sse2.S expects it to be defined. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230214173722.428140-3-bugaevc@gmail.com>
* hurd: i386 TLS tweaksSergey Bugaev2023-02-141-13/+35
| | | | | | | | | | | | | | * Micro-optimize TLS access using GCC's native support for gs-based addressing when available; * Just use THREAD_GETMEM and THREAD_SETMEM instead of more inline assembly; * Sync tcbhead_t layout with NPTL, in particular update/fix __private_ss offset; * Statically assert that the two offsets that are a part of ABI are what we expect them to be. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230214173722.428140-2-bugaevc@gmail.com>
* hurd, htl: Add some x86_64-specific codeSergey Bugaev2023-02-122-0/+49
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230212111044.610942-12-bugaevc@gmail.com>
* hurd: Set up the basic tree for x86_64-gnuSergey Bugaev2023-02-126-2/+10
| | | | | | | And move pt-setup.c to the generic x86 tree. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230212111044.610942-11-bugaevc@gmail.com>
* mach: Look for mach_i386.defs on x86_64 tooSergey Bugaev2023-02-122-6/+6
| | | | | Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230212111044.610942-10-bugaevc@gmail.com>
* hurd: Use mach_msg_type_number_t where appropriateSergey Bugaev2023-02-123-4/+6
| | | | | | | | | | It has been decided that on x86_64, mach_msg_type_number_t stays 32-bit. Therefore, it's not possible to use mach_msg_type_number_t interchangeably with size_t, in particular this breaks when a pointer to a variable is passed to a MIG routine. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230212111044.610942-3-bugaevc@gmail.com>
* hurd: Refactor readlinkat()Sergey Bugaev2023-02-121-23/+32
| | | | | | | | | Make the code flow more linear using early returns where possible. This makes it so much easier to reason about what runs on error / successful code paths. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230212111044.610942-2-bugaevc@gmail.com>
* hurd: Fix unwinding over INTR_MSG_TRAPSamuel Thibault2023-02-091-13/+0
| | | | | | | | | | We used to use .cfi_adjust_cfa_offset around %esp manipulation asm instructions to fix unwinding, but when building glibc with -fno-omit-frame-pointer this is bogus since in that case %ebp is the CFA and does not move. Instead, let's force -fno-omit-frame-pointer when building intr-msg.c so that %ebp can always be used and no .cfi_adjust_cfa_offset is needed.
* Move RETURN_TO to x86/sysdep.h and implement x86_64 version.Flavio Cruz2023-02-052-34/+17
| | | | Message-Id: <Y99nfeBrTubZL9oi@jupiter.tail36e24.ts.net>
* Remove sysdeps/mach/i386/machine-sp.hFlavio Cruz2023-02-021-30/+0
| | | | | | | This file is not used today since we end up using sysdeps/i386/htl/machine-sp.h. Getting the stack pointer does not need to be hurd specific and can go into sysdeps/<arch>. Message-Id: <Y9tpWs2WOgE/Duiq@jupiter.tail36e24.ts.net>
* hurd: Move some i386 bits to x86Samuel Thibault2023-02-0210-107/+129
| | | | As they will actually be usable on x86_64 too.
* hurd: Implement SHM_ANONSergey Bugaev2023-02-011-0/+25
| | | | | | | | | | | | | | | This adds a special SHM_ANON value that can be passed into shm_open () in place of a name. When called in this way, shm_open () will create a new anonymous shared memory file. The file will be created in the same way that other shared memory files are created (i.e., under /dev/shm/), except that it is not given a name and therefore cannot be reached from the file system, nor by other calls to shm_open (). This is accomplished by utilizing O_TMPFILE. This is intended to be compatible with FreeBSD's API of the same name. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230130125216.6254-4-bugaevc@gmail.com>
* hurd: Implement O_TMPFILESergey Bugaev2023-02-011-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a flag that causes open () to create a new, unnamed file in the same filesystem as the given directory. The file descriptor can be simply used in the creating process as a temporary file, or shared with children processes via fork (), or sent over a Unix socket. The file can be left anonymous, in which case it will be deleted from the backing file system once all copies of the file descriptor are closed, or given a permanent name with a linkat () call, such as the following: int fd = open ("/tmp", O_TMPFILE | O_RDWR, 0700); /* Do something with the file... */ linkat (fd, "", AT_FDCWD, "/tmp/filename", AT_EMPTY_PATH); In between creating the file and linking it to the file system, it is possible to set the file content, mode, ownership, author, and other attributes, so that the file visibly appears in the file system (perhaps replacing another file) atomically, with all of its attributes already set up. The Hurd support for O_TMPFILE directly exposes the dir_mkfile RPC to user programs. Previously, dir_mkfile was used by glibc internally, in particular for implementing tmpfile (), but not exposed to user programs through a Unix-level API. O_TMPFILE was initially introduced by Linux. This implementation is intended to be compatible with the Linux implementation, except that the O_EXCL flag is not given the special meaning when used together with O_TMPFILE, unlike on Linux. Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230130125216.6254-3-bugaevc@gmail.com>
* Regenerate configure.Carlos O'Donell2023-01-311-1/+1
| | | | | | | Run using vanilla upstream autoconf 2.69. Minor whitespace change to sysdeps/loongarch/configure and sysdeps/mach/configure, and nothing else.
* Update copyright dates with scripts/update-copyrightsJoseph Myers2023-01-06394-394/+394
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* hurd getcwd: Fix memory leak on errorSamuel Thibault2023-01-021-0/+2
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* hurd fcntl: Make LOCKED macro more robustSamuel Thibault2023-01-021-2/+3
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* hurd: Make dl-sysdep __sbrk check __vm_allocate callSamuel Thibault2023-01-021-1/+2
| | | | | The caller won't be able to progress, but better crash than use random addr.
* htl: Drop duplicate check in __pthread_stack_allocSamuel Thibault2023-01-021-3/+0
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* mach: Drop remnants of old_CFLAGSSamuel Thibault2022-12-192-8/+0
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