Skip to content
Snippets Groups Projects
  • Alexander Graf's avatar
    770cfef7
    efi_loader: Rename sections to allow for implicit data · 770cfef7
    Alexander Graf authored
    
    Some times gcc may generate data that is then used within code that may
    be part of an efi runtime section. That data could be jump tables,
    constants or strings.
    
    In order to make sure we catch these, we need to ensure that gcc emits
    them into a section that we can relocate together with all the other
    efi runtime bits. This only works if the -ffunction-sections and
    -fdata-sections flags are passed and the efi runtime functions are
    in a section that starts with ".text".
    
    Up to now we had all efi runtime bits in sections that did not
    interfere with the normal section naming scheme, but this forces
    us to do so. Hence we need to move the efi_loader text/data/rodata
    sections before the global *(.text*) catch-all section.
    
    With this patch in place, we should hopefully have an easier time
    to extend the efi runtime functionality in the future.
    
    Signed-off-by: default avatarAlexander Graf <agraf@suse.de>
    [agraf: Fix x86_64 breakage]
    770cfef7
    History
    efi_loader: Rename sections to allow for implicit data
    Alexander Graf authored
    
    Some times gcc may generate data that is then used within code that may
    be part of an efi runtime section. That data could be jump tables,
    constants or strings.
    
    In order to make sure we catch these, we need to ensure that gcc emits
    them into a section that we can relocate together with all the other
    efi runtime bits. This only works if the -ffunction-sections and
    -fdata-sections flags are passed and the efi runtime functions are
    in a section that starts with ".text".
    
    Up to now we had all efi runtime bits in sections that did not
    interfere with the normal section naming scheme, but this forces
    us to do so. Hence we need to move the efi_loader text/data/rodata
    sections before the global *(.text*) catch-all section.
    
    With this patch in place, we should hopefully have an easier time
    to extend the efi runtime functionality in the future.
    
    Signed-off-by: default avatarAlexander Graf <agraf@suse.de>
    [agraf: Fix x86_64 breakage]