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| author | Corinna Vinschen <corinna@vinschen.de> | 2022-10-26 21:16:35 +0200 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2022-10-28 16:26:53 +0200 |
| commit | 2f9b8ff00cce0d0ceeb1091b6b9aecae914ddb89 (patch) | |
| tree | 2adcede5e71e73240c69cd1be7cd96c4280459fc /winsup/cygwin/dcrt0.cc | |
| parent | c0776fa7bade123d5b33e44a9282f12dc3d2e10e (diff) | |
| download | newlib-2f9b8ff00cce0d0ceeb1091b6b9aecae914ddb89.zip newlib-2f9b8ff00cce0d0ceeb1091b6b9aecae914ddb89.tar.gz newlib-2f9b8ff00cce0d0ceeb1091b6b9aecae914ddb89.tar.bz2 | |
Cygwin: decouple cygheap from Cygwin DLL
One reason that ASLR is tricky is the fact that the cygheap
is placed at the end of the DLL and especially that it's expected
to be growable. To support ASLR, this construct must go.
Define dedicated cygheap memory region and reserve entire region.
Commit 3 Megs, as was the default size of the cygheap before.
Fix linker script accordingly, drop a now useless version check
in get_cygwin_startup_info().
Diffstat (limited to 'winsup/cygwin/dcrt0.cc')
| -rw-r--r-- | winsup/cygwin/dcrt0.cc | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/winsup/cygwin/dcrt0.cc b/winsup/cygwin/dcrt0.cc index e119709..84db38c 100644 --- a/winsup/cygwin/dcrt0.cc +++ b/winsup/cygwin/dcrt0.cc @@ -527,9 +527,6 @@ get_cygwin_startup_info () { if ((res->intro & OPROC_MAGIC_MASK) == OPROC_MAGIC_GENERIC) multiple_cygwin_problem ("proc intro", res->intro, 0); - else if (res->cygheap != (void *) &_cygheap_start) - multiple_cygwin_problem ("cygheap base", (uintptr_t) res->cygheap, - (uintptr_t) &_cygheap_start); unsigned should_be_cb = 0; switch (res->type) |