[efi] Treat 16-bit sections as hidden in hybrid binaries

Hybrid bzImage and UEFI binaries (such as wimboot) may include 16-bit
sections such as .bss16 that do not need to consume an entry in the PE
section list.  Treat any such sections as hidden.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

diff --git a/src/util/elf2efi.c b/src/util/elf2efi.c
index c98c4d4a909fb2d74a7d3d53e5e06d52b595e3fb..171e2b58ccb37efc70767cc38ef2308e11026630 100644 (file)
--- a/src/util/elf2efi.c
+++ b/src/util/elf2efi.c
@@ -653,6 +653,12 @@ static struct pe_section * process_section ( struct elf_file *elf,
                }
        }
 
+       /* Treat 16-bit sections as hidden in hybrid binaries */
+       if ( opts->hybrid && ( strlen ( name ) > 2 ) &&
+            ( strcmp ( &name[ strlen ( name ) - 2 ], "16" ) == 0 ) ) {
+               new->hidden = 1;
+       }
+
        /* Fill in section characteristics and update RVA limits */
        if ( ( shdr->sh_type == SHT_PROGBITS ) &&
             ( shdr->sh_flags & SHF_WRITE ) ) {