blob: f1ccee7e1530c4a2e18f5015b722d911ebc21e65 [file] [log] [blame]
/* Copyright 2020 The Fuchsia Authors
* Use of this source code is governed by a MIT-style
* license that can be found in the LICENSE file or at
* This is essentially a "subroutine" of phys.ld, but has to go into a
* separate file for BFD ld to handle it properly (lld works with this
* just pasted onto the end of phys.ld). For BFD ld, this file must be
* listed in a -T switch *before* the -T switch for phys.ld so that the
* `INSERT` clause can be "pending" when the main SECTIONS clause is read.
* Using a separate `SECTIONS ... INSERT` clause makes it possible to control
* where orphan sections wind up relative to the magic symbols like _end and
* PHYS_LOAD_END so that identifier-named sections can be used at will without
* listing them all in explicitly in the linker script to get correct layout.
.zbi.align : ALIGN(8) {
* For ZBI format, the file size must be aligned to 8 bytes. Just aligning
* doesn't do anything to the ultimate binary-format load image size when
* there isn't any subsequent data. So align and write a useless word.
* This represents the end of the load image, as distinct from the end
* of data in memory. That is, it's not aligned to the .bss alignment.
* That alignment padding isn't included in the file. It only matters
* that the memory reserved for .bss at runtime includes the padding.
* But the load headers for boot headers need to identify the size of
* the load image on disk precisely, so they use this instead of _edata.