Relocation fixup during AARCH64 SEC PE-COFF generation?

[Achin Gupta <achin.gupta@arm.com>]

Hi All,

Upon entry into UEFI, the ArmPlatformPkg/PrePi/PeiUniCore.inf SEC module
executes directly from within the firmware volume. The FV would typically be
loaded in DRAM by ARM Trusted Firmware. The rule in ArmJuno.fdf for SEC file
types converts a PE-COFF module into a stripped Terse executable as follows:

[Rule.AARCH64.SEC]
  FILE SEC = $(NAMED_GUID) RELOCS_STRIPPED FIXED {
    TE  TE    Align = Auto              $(INF_OUTPUT)/$(MODULE_NAME).efi
  }

The GCC_ARM_AARCH64_DLINK_COMMON variable includes the "--emit-relocs" option
when the ELF image is generated. Since the SEC module is able to "XIP" from the
within FV, this means that the relocations have to be fixed up at link time
before the TE image is created.

It seems to me that in GenFw.c, at least the static relocations are fixed up
when an ELF image is converted to PE-COFF. Can someone confirm if I am correct
in understanding that dynamic relocations will be left as is in the PE-COFF
image while static relocations will be fixed up?

Please let me know if you need any clarifications.

Thanks a lot,
Achin
IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.