[dynarmic] allow better dtrace diagnostics for code - do not clobber %rbp and save frame pointer (#2653)

Saving the %rbp pointer allows us to backref previous stackframes easily

Signed-off-by: lizzie <lizzie@eden-emu.dev>

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2653
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-by: Caio Oliveira <caiooliveirafarias0@gmail.com>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>

.gitignore

@@ -37,6 +37,8 @@ CMakeLists.txt.user*
 # *nix related
 # Common convention for backup or temporary files
 *~
+*.core
+dtrace-out/
 
 # Visual Studio CMake settings
 CMakeSettings.json