Add support for NetBSD/aarch64

(a cherry-pick of commit 3acaf7b0 from 'master')

Originally added by Jared McNeill (@jaredmcneill).

* include/private/gcconfig.h [NETBSD && __aarch64__] (AARCH64,
mach_type_known): Define macro.
* include/private/gcconfig.h [NETBSD && AARCH64] (OS_TYPE, HEURISTIC2,
DATASTART, ELF_CLASS, DYNAMIC_LOADING): Likewise.
* include/private/gcconfig.h [NETBSD && AARCH64] (GC_data_start):
Declare variable.

diff --git a/include/private/gcconfig.h b/include/private/gcconfig.h
index ea3e6f16815955316fd2291ef42d5c7804db9c71..693a3295d61c57830e65873027a163773a49eb01 100644 (file)
--- a/include/private/gcconfig.h
+++ b/include/private/gcconfig.h
@@ -114,7 +114,8 @@
 # endif
 # if defined(__aarch64__)
 #    define AARCH64
-#    if !defined(LINUX) && !defined(DARWIN) && !defined(FREEBSD)
+#    if !defined(LINUX) && !defined(DARWIN) && !defined(FREEBSD) \
+        && !defined(NETBSD)
 #      define NOSYS
 #      define mach_type_known
 #    endif
@@ -165,6 +166,10 @@
 #    define ARM32
 #    define mach_type_known
 # endif
+# if defined(NETBSD) && defined(__aarch64__)
+#    define AARCH64
+#    define mach_type_known
+# endif
 # if defined(NETBSD) && defined(__sh__)
 #    define SH
 #    define mach_type_known
@@ -2203,6 +2208,14 @@
 #     define DATASTART GC_FreeBSDGetDataStart(0x1000, (ptr_t)etext)
 #     define DATASTART_USES_BSDGETDATASTART
 #   endif
+#   ifdef NETBSD
+#     define OS_TYPE "NETBSD"
+#     define HEURISTIC2
+      extern ptr_t GC_data_start;
+#     define DATASTART GC_data_start
+#     define ELF_CLASS ELFCLASS64
+#     define DYNAMIC_LOADING
+#   endif
 #   ifdef NOSYS
       /* __data_start is usually defined in the target linker script.   */
       extern int __data_start[];