* exec/config-mips.m4.in (DADDI2, DADDI3): Disable at-clobbering
by assembler macros expressly.
* exec/loader-mips64el.s: Adapt from loader-mipsel.s.
* exec/configure.ac (exec_cv_as_daddi): Properly escape reg
names.
* exec/exec.c (struct exec_jump_command, exec_0): Don't define
or set `fpu_mode' if __LP64__.
* exec/exec.h (struct exec_tracee): New field `callno'.
* exec/trace.c (process_system_call): Always record the current
system call number in TRACEE lest it should be required once it
has been overwritten upon the syscall's completion.
(seccomp_system_call): Likewise.
(after_fork): Clear `tracee->callno'.
* exec/loader-mipsel.s (rest_of_exec): Delete redundant nop.
(skip_environ): Correct stack space test. Don't jump into
the label for the sp preserving case's delay slot.
* exec/exec.c (exec_0): Don't disable AT_EXECFN substitution on
MIPS systems.
* exec/loader-aarch64.s (skip_environ): Correct typo in
commentary.
* exec/loader-mips64el.s: Add a disclaimer that this file is
currently inoperable.
* exec/loader-mipsel.s (__start): Move environment and argument
vectors and produce and replace AT_EXECFN. Clear stack before
proceeding to circumvent an oversight in glibc.
* exec/exec.c (insert_args, exec_0): On non-MIPS systems, copy
NAME and its length to the loader area. State that MIPS support
is not yet available (though it will be pending the availability
of a functioning emulator).
* exec/loader-aarch64.s (_start):
* exec/loader-armeabi.s (_start):
* exec/loader-x86.s (_start):
* exec/loader-x86_64.s (_start): Displace auxv, environ, and
argv to create sufficient space for the provided file name, and
copy the file name there. Replace AT_EXECFN to refer to this
space.
* exec/trace.c (process_vm_readv, process_vm_writev): New
function pointers. Attempt to load them on recent Android
systems when `exec' was not linked with a sufficiently
up-to-date libc.
(read_memory, user_copy): Always use process_vm_readv and
process_vm_writev if available.
(handle_openat): Write trailing NULL byte of filename to user
buffer.
(exec_init): Attempt to dlsym process_vm_readv and
process_vm_writev.
* exec/exec.c: Do not include ctype.h, as the kernel
does not care about the locale.
(check_interpreter): Treat only spaces and tabs as white space.
Do not inspect more bytes than were read.
Although the resulting code does not exactly match what
the Android kernel does, it’s closer than what it was before.
ee3e3a6311 ; Update version number of exec/configure.ac
c5925b6ba5 Fix heex-ts-mode indentation following previews elixir-mo...
c3383be5f0 ; * admin/make-tarball.txt: Improve last change.
8ddb54117f ; * admin/make-tarball.txt: Remove now unnecessary config...
7e194d33f9 * lisp/ldefs-boot.el: Update.
9019536ea6 Fix use of Uniscribe font driver in MinGW build
5c55c860db Avoid crashes in redisplay in batch-mode testing
ba2190e1ae ; * etc/NEWS: Fix indentation.
818c0cc9a5 eglot-test-rust-completion-exit-function: Fix failure in ...
f47297782b ; * doc/lispref/searching.texi (Rx Notation): Simplify rx...
03e5698167 Clarify the semantics of 'string-pixel-width'
9f0603207b ; * src/treesit.c: Minor cleanups of recent changes.
e0d3f74395 * src/treesit.c (treesit_debug_print_parser_list): Fix fo...
bed38ded73 ; * src/treesit.c (treesit_debug_print_parser_list): Fix ...
18c6487dbd ; * src/treesit.c: Add a prototype so there's no warning ...
bf23382f1f Read more on each call to treesit's buffer reader
3435464452 Fix the range handling in treesit.c
3fcec09f75 Add debugging function for treesit.c
0fd259d166 Fix elixir-ts-mode's range query
2329b36b1f ; project-files-relative-names: Update docstring (bug#72701)
e55e2e1c6b Make json-serialize always return a unibyte string (bug#7...
89c99891b2 ; * doc/lispref/os.texi (Suspending Emacs): Fix last change.
4f044d0d3d ; Improve documentation of 'suspend-emacs'
* etc/NEWS: Update correspondingly.
* exec/Makefile.in (config-mips.m4): Don't define rule
or predicate $(LOADOBJS) on it elsewhere than on MIPS.
* exec/README: Direct developers to GDB.
* exec/trace.c (finish_exec): Resume the tracee after reporting
an error in `exec'.
(after_fork): If seccomp is enabled on Android, and the kernel
is 4.7 or earlier, detect whether revisions to the sequencing of
seccomp events have been backported from 4.8.
(exec_waitpid): Resume the process with PTRACE_CONT after
receiving an unknown signal.
(exec_init): Cease disabling seccomp on Android kernels earlier
than 4.8.
* exec/configure.ac (REENTRANT): Remove option for reentrancy.
(PROGRAM_COUNTER, HAVE_SECCOMP): Define register providing the
program counter and enable seccomp if its headers are available.
* exec/exec.c (write_load_command): Avoid defining unused
variable.
(exec_0): Remove code specific to REENTRANT configurations.
* exec/exec.h (struct exec_tracee) <exec_data, data_size>: New
fields for loader instructions and their size.
* exec/exec1.c (main): Call exec_init before forking.
* exec/mipsel-user.h (ELF_NGREG): Delete definition.
(struct mipsel_regs): Reduce number of gregs to 32, but
introduce separate fields for special registers.
* exec/trace.c (use_seccomp_p): New variable; defile to false if
!HAVE_SECCOMP.
(remove_tracee): Cease providing for non-reentrant
configurations. Release executable data if present.
(handle_clone_prepare): Likewise. Resume process with
PTRACE_CONT if seccomp-based interception is enabled.
(handle_clone, check_signal): Resume processes as above.
(handle_exec): Divide into two functions, with only rewriting
the system call and generating instructions for the loader
remaining in the first, and copying such instructions into the
loader's stack removed into a new function, `finish_exec'.
(finish_exec): New function.
(handle_readlinkat, handle_openat): Abolish non-REENTRANT
configurations.
(process_system_call): Divide exec system calls into two phases,
disambiguated by the value of tracee->waiting_for_syscall. Typo
fixes. Accommodate syscall-exit-stops where the signal was
initially intercepted by `seccomp_system_call'.
(interesting_syscalls): New array.
(ARRAYELTS): New macro.
(seccomp_system_call, establish_seccomp_filter): New function.
(tracing_execve) [HAVE_SECCOMP]: Establish a seccomp filter if
this is to be enabled.
(after_fork): Provide PTRACE_O_TRACESECCOMP. Resume process
with PTRACE_CONT if seccomp-based interception is enabled.
(exec_waitpid): Resume process with PTRACE_CONT if seccomp-based
interception is enabled. Dispatch stops identifying as
PTRACE_EVENT_SECCOMP to `seccomp_system_call'.
(exec_init): Establish whether it is possible to enable seccomp.
* exec/Makefile.in (is_mips): New substitution.
(.s.o): Avoid calling m4 unless it be set.
* exec/configure.ac: Substitute is_mips, and don't generate
config-mips.m4 otherwise.
* exec/loader-x86.s:
* exec/loader-x86_64.s: Use assembler rather than m4-defined
comment syntax.
* exec/configure.ac (USER_SWORD): New macro.
* exec/exec.c (format_pid): Export this function.
* exec/exec.h:
* exec/trace.c (canon_path): New function.
(handle_readlinkat, handle_openat): Test complete file name
against /proc/self/exe, and further check for /proc/pid/exe.
* exec/configure.ac (OPEN_SYSCALL, OPENAT_SYSCALL): Define new
macros.
* exec/exec.h (struct exec_tracee): New field `sp'.
* exec/trace.c (handle_openat): New function.
(process_system_call): If handle_openat executes successfully,
save the unmodified stack pointer within the tracee structure to
be restored once the system call completes.
Problem reported by Gerd Möllmann (Bug#68464).
* .gitignore: Ignore files in exec that are now copied from build-aux.
* admin/merge-gnulib (avoided_flags): Instead of clearing
autom4te.cache here ...
* autogen.sh (do_git): ... clear it here.
Use config.guess, config.sub and install-sh from
the Emacs repository, as they are more likely to be up to date.
This avoids unnecessary differences among different builders,
and avoids unnecessary ‘git diff’ output after autogen.sh.
Also, copy these files from build-aux to exec since there
should be no difference between the two copies.
* exec/config.guess, exec/config.sub, exec/install-sh:
Remove from repository, as autogen.sh now copies them from build-aux.
* exec/loader-armeabi.s (timespec):
* exec/loader-mips64el.s (__start):
* exec/loader-mipsel.s (__start): Use ?c instead of integer in local
variables.
* exec/trace.c (process_system_call) <READLINKAT_SYSCALL>:
Examine tracee->waiting_for_syscall and avoid rewriting user
arguments if a system call is presently being executed by the
kernel. Reported by Romário Rios <romariorios@protonmail.com>.
It’s not worth the porting hassle, and as the glibc manual says,
“this function is generally a poor choice for processing strings”.
* admin/merge-gnulib (GNULIB_MODULES): Remove stpncpy.
* exec/configure.ac: Do not check for stpncpy.
* exec/exec.c (rpl_stpncpy, stpncpy): Remove this replacement.
(exec_0): Properly clear buffer1. Use memcpy instead of
stpncpy to add the trailing name. This code is clearly
still suboptimal but efficiency is not that important here
and I tried to minimize the change.
* lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate.
