git: efi/loader: Improve the linker script and LDFLAGS

[Aaron LI]

commit cc88f3fb4cbff3973007367de9269680448a095c
Author: Aaron LI <aly at aaronly.me>
Date:   Fri Oct 2 13:14:35 2026 +0800

    efi/loader: Improve the linker script and LDFLAGS
    
    * Remove the stale comment of `.hash`, which is empty under the default
      `--hash-style=gnu`.  The image base is also pinned by
      `. = 0; ImageBase = .`.
    
    * Fold the remaining linker-generated PLT sections (`.plt.*` and `.iplt`)
      into `.text` so the `objcopy -j .text` can never drop them.
    
    * Add `-Wl,-z,defs` to fail the link if there are unresolved symbols,
      instead of generating PLT entries for them.
    
    * Add `-Wl,--no-eh-frame-hdr` to skip generating the `.eh_frame_hdr`
      section because it's never copied into the final `loader.efi`
      executable.  What's worse, the generation sidesteps a bug in
      bintuils/bfd that produced the misleading overlapping FDEs error, as
      observed in the previous commit.
    
    Assisted-by: DeepSeek-v4.1-flash (with Pi Coding Agent)

Summary of changes:
 stand/boot/efi/loader/Makefile                    | 6 ++++++
 stand/boot/efi/loader/arch/x86_64/ldscript.x86_64 | 4 ++--
 2 files changed, 8 insertions(+), 2 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/cc88f3fb4cbff3973007367de9269680448a095c


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