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Unexec removal: Main part

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* configure.ac: Remove unexec-specific parts.
(EMACS_CONFIG_FEATURES): Always report that we do not have the UNEXEC
feature.
(AC_ECHO): No longer display a line about the unexec feature.
* lisp/loadup.el:
* lisp/startup.el: Remove unexec-specific code.
* src/Makefile.in (base_obj): Drop 'UNEXEC_OBJ'.
* src/alloc.c (staticvec): Never initialize this variable.
(BLOCK_ALIGN): Always allow large blocks.
(mmap_lisp_allowed_p): Remove unexec-specific code.
* src/buffer.c (init_buffer):
* src/conf_post.h (ADDRESS_SANITIZER):
* src/emacs.c (load_pdump, main): Remove unexec-specific code.
(Fdump_emacs): Remove function.
(syms_of_emacs): Remove 'Fdump_emacs'.
* src/lastfile.c: Remove unexec-specific code.
* src/lisp.h (gflags): Remove unexec-specific flags.
(will_dump_p, will_bootstrap_p, will_dump_with_unexec_p)
(dumped_with_unexec_p, definitely_will_not_unexec_p): Remove or adjust
predicates.
(SUBR_SECTION_ATTRIBUTE): Remove unexec-specific definition.
* src/pdumper.c (Fdump_emacs_portable): Remove unexec-specific warning.
* src/process.c (init_process_emacs): Remove !unexec condition
* src/sysdep.c (maybe_disable_address_randomization): Adjust comment.
(init_signals):
* src/timefns.c (init_timefns): Remove unexec-specific code.
* src/w32heap.c (report_temacs_memory_usage): Remove function.
* src/w32heap.h: Adjust comment.
* src/w32image.c (globals_of_w32image): Remove unexec-specific code.
This commit is contained in:
Pip Cet 2024-08-20 18:31:05 +00:00 • committed by Stefan Kangas
parent 7ce34a3bcf
commit 15e2b14f03
17 changed files with 55 additions and 682 deletions
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10
src/sysdep.c
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@ -165,9 +165,7 @@ maybe_disable_address_randomization (int argc, char **argv)
if (argc < 2 || strcmp (argv[1], aslr_disabled_option) != 0)
{
/* If dumping via unexec, ASLR must be disabled, as otherwise
data may be scattered and undumpable as a simple executable.
If pdumping, disabling ASLR lessens differences in the .pdmp file. */
/* If pdumping, disabling ASLR lessens differences in the .pdmp file. */
bool disable_aslr = will_dump_p ();
# ifdef __PPC64__
disable_aslr = true;
@ -2036,12 +2034,6 @@ init_signals (void)
main_thread_id = pthread_self ();
#endif
/* Don't alter signal handlers if dumping with unexec. On some
machines, changing signal handlers sets static data that would make
signals fail to work right when the dumped Emacs is run. */
if (will_dump_with_unexec_p ())
return;
sigfillset (&process_fatal_action.sa_mask);
process_fatal_action.sa_handler = deliver_fatal_signal;
process_fatal_action.sa_flags = emacs_sigaction_flags ();