linux-user/flatload.c: Remove unused bFLT shared-library and ZFLAT code

Ever since the bFLT format support was added in 2006, there has been
a chunk of code in the file guarded by CONFIG_BINFMT_SHARED_FLAT
which is supposedly for shared library support.  This is not enabled
and it's not possible to enable it, because if you do you'll run into
the "#error needs checking" in the calc_reloc() function.

Similarly, CONFIG_BINFMT_ZFLAT exists but can't be enabled because of
an "#error code needs checking" in load_flat_file().

This code is obviously unfinished and has never been used; nobody in
the intervening 18 years has complained about this or fixed it, so
just delete the dead code.  If anybody ever wants the feature they
can always pull it out of git, or (perhaps better) write it from
scratch based on the current Linux bFLT loader rather than the one of
18 years ago.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20240411115313.680433-1-peter.maydell@linaro.org

1 files changed, 1 insertions, 4 deletions

diff --git a/linux-user/flat.h b/linux-user/flat.h
index ed518e2013..e374b73e26 100644
--- a/linux-user/flat.h
+++ b/linux-user/flat.h
@@ -12,11 +12,8 @@
 
 #define	FLAT_VERSION			0x00000004L
 
-#ifdef CONFIG_BINFMT_SHARED_FLAT
-#define	MAX_SHARED_LIBS			(4)
-#else
+/* QEMU doesn't support bflt shared libraries */
 #define	MAX_SHARED_LIBS			(1)
-#endif
 
 /*
  * To make everything easier to port and manage cross platform