efi: Export __bcopyxx_len

We need to provide a __bcopyxx_len symbol for EFI because it's
referenced in generic code in libcom32.c32. Without this change,
libcom32.c32 will fail to load under EFI.

Signed-off-by: Matt Fleming <matt.fleming@intel.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/efi/main.c b/efi/main.c
index 438e88c7..51ff9f39 100644
--- a/efi/main.c
+++ b/efi/main.c
@@ -153,6 +153,7 @@ void pxenv(void)
 uint16_t BIOS_fbm = 1;
 far_ptr_t InitStack;
 far_ptr_t PXEEntry;
+__export unsigned int __bcopyxx_len = 0;
 
 void gpxe_unload(void)
 {