-diff --git a/src/core/memory.d b/src/core/memory.d
-index 0a427055..28408cb7 100644
---- a/src/core/memory.d
-+++ b/runtime/druntime/src/core/memory.d
-@@ -38,7 +38,7 @@
- *
- * Notes_to_implementors:
- * $(UL
-- * $(LI On POSIX systems, the signals SIGUSR1 and SIGUSR2 are reserved
-+ * $(LI On POSIX systems, the signals `SIGRTMIN` and `SIGRTMIN + 1` are reserved
- * by this module for use in the garbage collector implementation.
- * Typically, they will be used to stop and resume other threads
- * when performing a collection, but an implementation may choose
-diff --git a/src/core/thread.d b/src/core/thread.d
-index 64e6dc18..2c08e6db 100644
---- a/src/core/thread.d
-+++ b/runtime/druntime/src/core/thread.d
-@@ -1922,7 +1922,7 @@ version( CoreDdoc )
- {
- /**
- * Instruct the thread module, when initialized, to use a different set of
-- * signals besides SIGUSR1 and SIGUSR2 for suspension and resumption of threads.
-+ * signals besides `SIGRTMIN` and `SIGRTMIN + 1` for suspension and resumption of threads.
- * This function should be called at most once, prior to thread_init().
- * This function is Posix-only.
- */
-@@ -1980,12 +1980,13 @@ extern (C) void thread_init()
- {
- if( suspendSignalNumber == 0 )
- {
-- suspendSignalNumber = SIGUSR1;
-+ suspendSignalNumber = SIGRTMIN;
- }
-
- if( resumeSignalNumber == 0 )
- {
-- resumeSignalNumber = SIGUSR2;
-+ resumeSignalNumber = SIGRTMIN + 1;
-+ assert(resumeSignalNumber <= SIGRTMAX);
- }
-
- int status;
-@@ -3975,6 +3976,10 @@ version( LDC )
- version( X86 ) version = CheckFiberMigration;
- version( X86_64 ) version = CheckFiberMigration;
- }
-+ version( Android )
-+ {
-+ version( ARM ) version = CheckFiberMigration;
-+ }
- }
-
- // Fiber support for SjLj style exceptions
-diff --git a/src/rt/sections_android.d b/src/rt/sections_android.d
-index 60ca9a9a..a662887d 100644
---- a/src/rt/sections_android.d
-+++ b/runtime/druntime/src/rt/sections_android.d
-@@ -62,12 +62,9 @@ private:
- void initSections()
- {
- pthread_key_create(&_tlsKey, null);
-+ _sections.moduleGroup = ModuleGroup(getModuleInfos());
-
-- auto mbeg = cast(immutable ModuleInfo**)&__start_minfo;
-- auto mend = cast(immutable ModuleInfo**)&__stop_minfo;
-- _sections.moduleGroup = ModuleGroup(mbeg[0 .. mend - mbeg]);
--
-- auto pbeg = cast(void*)&_tls_end;
-+ auto pbeg = cast(void*)&_tlsend;
- auto pend = cast(void*)&__bss_end__;
- _sections._gcRanges[0] = pbeg[0 .. pend - pbeg];
- }
-@@ -167,6 +164,38 @@ ref void[] getTLSBlockAlloc()
-
- __gshared SectionGroup _sections;
-
-+// This linked list is created by a compiler generated function inserted
-+// into the .ctor list by the compiler.
-+struct ModuleReference
-+{
-+ ModuleReference* next;
-+ ModuleInfo* mod;
-+}
-+
-+extern (C) __gshared immutable(ModuleReference*) _Dmodule_ref; // start of linked list
-+
-+immutable(ModuleInfo*)[] getModuleInfos()
-+out (result)
-+{
-+ foreach(m; result)
-+ assert(m !is null);
-+}
-+body
-+{
-+ size_t len;
-+ immutable(ModuleReference)* mr;
-+
-+ for (mr = _Dmodule_ref; mr; mr = mr.next)
-+ len++;
-+ auto result = (cast(immutable(ModuleInfo)**).malloc(len * size_t.sizeof))[0 .. len];
-+ len = 0;
-+ for (mr = _Dmodule_ref; mr; mr = mr.next)
-+ { result[len] = mr.mod;
-+ len++;
-+ }
-+ return cast(immutable)result;
-+}
-+
- extern(C)
- {
- /* Symbols created by the compiler/linker and inserted into the
-@@ -174,10 +203,8 @@ extern(C)
- */
- extern __gshared
- {
-- void* __start_deh;
-- void* __stop_deh;
-- void* __start_minfo;
-- void* __stop_minfo;
-+ void* _deh_beg;
-+ void* _deh_end;
-
- size_t __bss_end__;
-
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