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comment	@// @;


1.1
date	2025.04.14.15.33.04;	author nia;	state Exp;
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commitid	SdmOsZfrH2wk72RF;


desc
@@


1.1
log
@seamonkey: Update to 2.53.20. Large scale cleanup of package.

- Local change: Removed all old patches.

- Additional important security fixes up to Current Firefox 115.19 and
  Thunderbird 115.19 ESR plus many enhancements have been backported.

- Support for all NPAPI plugins like Flash, Java and Silverlight has been
  removed.

See release notes:
https://www.seamonkey-project.org/releases/seamonkey2.53.20/
@
text
@$NetBSD$

PaX MPROTECT support for NetBSD.

--- js/src/jit/ProcessExecutableMemory.cpp.orig	2024-12-13 00:29:16.000000000 +0000
+++ js/src/jit/ProcessExecutableMemory.cpp
@@@@ -292,8 +292,13 @@@@ ReserveProcessExecutableMemory(size_t by
     // Note that randomAddr is just a hint: if the address is not available
     // mmap will pick a different address.
     void* randomAddr = ComputeRandomAllocationAddress();
+#ifdef PROT_MPROTECT
+    void* p = MozTaggedAnonymousMmap(randomAddr, bytes, PROT_NONE | PROT_MPROTECT(PROT_READ | PROT_WRITE | PROT_EXEC), MAP_PRIVATE | MAP_ANON,
+                                     -1, 0, "js-executable-memory");
+#else
     void* p = MozTaggedAnonymousMmap(randomAddr, bytes, PROT_NONE, MAP_PRIVATE | MAP_ANON,
                                      -1, 0, "js-executable-memory");
+#endif
     if (p == MAP_FAILED)
         return nullptr;
     return p;
@@@@ -336,9 +341,15 @@@@ ProtectionSettingToFlags(ProtectionSetti
 static MOZ_MUST_USE bool
 CommitPages(void* addr, size_t bytes, ProtectionSetting protection)
 {
+#ifdef PROT_MPROTECT
+    void* p = MozTaggedAnonymousMmap(addr, bytes, ProtectionSettingToFlags(protection) | PROT_MPROTECT(PROT_READ | PROT_WRITE | PROT_EXEC),
+                                     MAP_FIXED | MAP_PRIVATE | MAP_ANON,
+                                     -1, 0, "js-executable-memory");
+#else
     void* p = MozTaggedAnonymousMmap(addr, bytes, ProtectionSettingToFlags(protection),
                                      MAP_FIXED | MAP_PRIVATE | MAP_ANON,
                                      -1, 0, "js-executable-memory");
+#endif
     if (p == MAP_FAILED)
         return false;
     MOZ_RELEASE_ASSERT(p == addr);
@@@@ -350,9 +361,15 @@@@ DecommitPages(void* addr, size_t bytes)
 {
     // Use mmap with MAP_FIXED and PROT_NONE. Inspired by jemalloc's
     // pages_decommit.
+#ifdef PROT_MPROTECT
+    void* p = MozTaggedAnonymousMmap(addr, bytes, PROT_NONE | PROT_MPROTECT(PROT_READ | PROT_WRITE | PROT_EXEC),
+                                     MAP_FIXED | MAP_PRIVATE | MAP_ANON,
+                                     -1, 0, "js-executable-memory");
+#else
     void* p = MozTaggedAnonymousMmap(addr, bytes, PROT_NONE,
                                      MAP_FIXED | MAP_PRIVATE | MAP_ANON,
                                      -1, 0, "js-executable-memory");
+#endif
     MOZ_RELEASE_ASSERT(addr == p);
 }
 #endif
@