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Makefile: apply dynamic relocations for LLD

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It seems that for aarch64, unless we apply dynamic relocations to the
location being relocated, we fail to boot.

As Fangrui notes:
  For dynamic relocations using the RELA format (readelf -Wr), GNU ld
  sets the initial content to r_addend; ld.lld doesn't do that by
  default (needs --apply-dynamic-relocs).

Otherwise .rodata appears to be full of NUL-bytes before relocation,
causing crashes when trying to invoke the function pointers in
init_sequence_f from initcall_run_list().

Link: https://reviews.llvm.org/D42797
Suggested-by: Fangrui Song <maskray@google.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Alistair Delva <adelva@google.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
This commit is contained in:
Nick Desaulniers 2022-09-26 20:47:40 +00:00 committed by Tom Rini
parent 43b7dcdf34
commit 0b943587d2
1 changed files with 1 additions and 1 deletions
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@ -1023,7 +1023,7 @@ LDFLAGS_u-boot += $(LDFLAGS_FINAL)
LDFLAGS_u-boot += $(call ld-option, --no-dynamic-linker)
# ld.lld support
LDFLAGS_u-boot += -z notext
LDFLAGS_u-boot += -z notext $(call ld-option,--apply-dynamic-relocs)
LDFLAGS_u-boot += --build-id=none