deraadt@ mentioned a problem with imlib2 on machines with IBT. I've bodged things so that I can run regression tests (which are only present in git, not the distributed tarballs, and don't built without extra patches) - SIGILL shows up when running them here.
Here's a diff adding landing pads to the amd64 asm. There are also some src/lib/asm_XXX.S which are only used on i386 MMX and not compiled on amd64 so I have left those alone. (Well actually I wrote a diff for those too using #ifdef which did build on i386, but it doesn't seem useful so I dropped it) This fixes tests for me. OK? Index: Makefile =================================================================== RCS file: /cvs/ports/graphics/imlib2/Makefile,v retrieving revision 1.54 diff -u -p -r1.54 Makefile --- Makefile 3 Feb 2024 18:14:34 -0000 1.54 +++ Makefile 23 Feb 2024 10:12:06 -0000 @@ -1,6 +1,7 @@ COMMENT= image manipulation library DISTNAME= imlib2-1.12.2 +REVISION= 0 SHARED_LIBS= Imlib2 9.0 # 13.2 CATEGORIES= graphics Index: patches/patch-src_lib_amd64_blend_S =================================================================== RCS file: patches/patch-src_lib_amd64_blend_S diff -N patches/patch-src_lib_amd64_blend_S --- /dev/null 1 Jan 1970 00:00:00 -0000 +++ patches/patch-src_lib_amd64_blend_S 23 Feb 2024 10:12:06 -0000 @@ -0,0 +1,11 @@ +Index: src/lib/amd64_blend.S +--- src/lib/amd64_blend.S.orig ++++ src/lib/amd64_blend.S +@@ -102,6 +102,7 @@ FN_(imlib_amd64_reshade_copy_rgb_to_rgba) + + + #define ENTER \ ++ endbr64 ; \ + pushq %rbp ; \ + movq %rsp, %rbp ; \ + pushq %rbx ; \ Index: patches/patch-src_lib_amd64_blend_cmod_S =================================================================== RCS file: patches/patch-src_lib_amd64_blend_cmod_S diff -N patches/patch-src_lib_amd64_blend_cmod_S --- /dev/null 1 Jan 1970 00:00:00 -0000 +++ patches/patch-src_lib_amd64_blend_cmod_S 23 Feb 2024 10:12:06 -0000 @@ -0,0 +1,11 @@ +Index: src/lib/amd64_blend_cmod.S +--- src/lib/amd64_blend_cmod.S.orig ++++ src/lib/amd64_blend_cmod.S +@@ -114,6 +114,7 @@ FN_(imlib_amd64_reshade_copy_rgb_to_rgba_cmod) + + + #define ENTER \ ++ endbr64 ; \ + pushq %rbp ; \ + movq %rsp, %rbp ; \ + pushq %rbx ; \