2 files changed, 54 insertions, 0 deletions
diff --git a/lang/gcc15-devel/files/patch-libgcc_unwind-dw2-fde-dip.c b/lang/gcc15-devel/files/patch-libgcc_unwind-dw2-fde-dip.c
new file mode 100644
index 000000000000..66452b37de0f
--- /dev/null
+++ b/lang/gcc15-devel/files/patch-libgcc_unwind-dw2-fde-dip.c
@@ -0,0 +1,23 @@
+FreeBSD defines ElfW(x) to translate Linux's convention to FreeBSD's convention.
+GCC defines ElfW to convert its convention to FreeBSD's convention. This patch
+removes the conversion defined by GCC so that the FreeBSD conversion only is
+applied.
+
+--- libgcc/unwind-dw2-fde-dip.c.orig	2025-05-16 15:47:38 UTC
++++ libgcc/unwind-dw2-fde-dip.c
+@@ -59,13 +59,13 @@
+ 
+ #if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+     && defined(TARGET_DL_ITERATE_PHDR) \
+-    && defined(__linux__)
++    && (defined(__linux__) || defined(__FreeBSD__))
+ # define USE_PT_GNU_EH_FRAME
+ #endif
+ 
+ #if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+     && defined(TARGET_DL_ITERATE_PHDR) \
+-    && (defined(__DragonFly__) || defined(__FreeBSD__))
++    && defined(__DragonFly__)
+ # define ElfW __ElfN
+ # define USE_PT_GNU_EH_FRAME
+ #endif
diff --git a/lang/gcc15-devel/files/patch-libgcc_unwind.inc b/lang/gcc15-devel/files/patch-libgcc_unwind.inc
new file mode 100644
index 000000000000..94fb7f65d5fb
--- /dev/null
+++ b/lang/gcc15-devel/files/patch-libgcc_unwind.inc
@@ -0,0 +1,31 @@
+GCC generates instructions that require variables to be aligned in memory on
+certain CPUs. Our libthr does not have the required alignment so these CPUs fail
+to execute these instructions. The instructions generation is driven by CPUTYPE.
+Some CPUs are fine to execute these instructions on unaligned data.
+
+This patch explicitly forbids GCC to generate instructions that require
+alignment of the data.
+
+If the entire program is compiled by LLVM or GCC, there is no problem (with GCC
+everything is aligned, with LLVM vmovdqa is not used to assign both variables
+at once).
+
+Linux does not have libthr, so Linux is not affected. Moreover Linux is likely
+to build everything with GCC.
+
+This patch will become obsolete once all supported FreeBSD releases
+include commit 22e564c74eb20e14bd93fd9fdde20e38a29cfcf1.
+
+--- libgcc/unwind.inc.orig	2025-04-12 08:18:17 UTC
++++ libgcc/unwind.inc
+@@ -212,8 +212,8 @@ _Unwind_ForcedUnwind (struct _Unwind_Exception *exc,
+   uw_init_context (&this_context);
+   cur_context = this_context;
+ 
+-  exc->private_1 = (_Unwind_Ptr) stop;
+-  exc->private_2 = (_Unwind_Ptr) stop_argument;
++  __builtin_memcpy(&exc->private_1, &stop, sizeof(_Unwind_Ptr));
++  __builtin_memcpy(&exc->private_2, &stop_argument, sizeof(_Unwind_Ptr));
+ 
+   code = _Unwind_ForcedUnwind_Phase2 (exc, &cur_context, &frames);
+   if (code != _URC_INSTALL_CONTEXT)