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commit 6e2228fb052b ("Merge patch series "Clean up arm linker scripts"")
was cleaning up linker scripts for armv7 and v8 in a similar fashion.
Several commits in the past -- e.g
commit d0b5d9da5de2 ("arm: make _end compiler-generated")
was moving symbols to be compiler generated. They were defined as c
variables in its own section to force the compiler emit relative a
reference. However, defining those in the linker script will do the
same thing since [0].
So let's remove the special sections from the linker scripts, the
variable definitions from sections.c, and define them as a symbols.
It's worth noting that the linker was discarding the symbols in the
older binary completely since the symbol definition had an extra _.
- new binary
$~ aarch64-linux-gnu-readelf -sW u-boot | grep efi_runtim
246: 000000000004acbe 13 FUNC LOCAL DEFAULT 14 vbe_req_efi_runtime_rand
3198: 0000000000318690 16 OBJECT LOCAL DEFAULT 29 efi_runtime_mmio
6359: 00000000000dedff 217 FUNC LOCAL DEFAULT 14 efi_runtime_relocate
7942: 00000000003074c0 136 OBJECT GLOBAL HIDDEN 29 efi_runtime_services
8869: 0000000000305e20 0 NOTYPE GLOBAL DEFAULT 27 __efi_runtime_rel_stop
9159: 0000000000305e20 0 NOTYPE GLOBAL DEFAULT 27 __efi_runtime_stop
9410: 0000000000305e20 0 NOTYPE GLOBAL DEFAULT 27 __efi_runtime_start
10137: 00000000005981bd 0 NOTYPE WEAK HIDDEN 33 efi_runtime.c.de5bed54
10470: 0000000000305e20 0 NOTYPE GLOBAL DEFAULT 27 __efi_runtime_rel_start
- old binary
$~ aarch64-linux-gnu-readelf -sW u-boot.old | grep efi_runtim
246: 000000000004acbe 13 FUNC LOCAL DEFAULT 14 vbe_req_efi_runtime_rand
3198: 0000000000318690 16 OBJECT LOCAL DEFAULT 29 efi_runtime_mmio
6359: 00000000000dedff 221 FUNC LOCAL DEFAULT 14 efi_runtime_relocate
7942: 00000000003074c0 136 OBJECT GLOBAL HIDDEN 29 efi_runtime_services
10135: 0000000000598320 0 NOTYPE WEAK HIDDEN 33 efi_runtime.c.de5bed54
$~ bloat-o-meter u-bool.old u-boot
add/remove: 0/0 grow/shrink: 1/1 up/down: 7/-4 (3)
Function old new delta
efi_memory_init 343 350 +7
efi_runtime_relocate 221 217 -4
Total: Before=2009902, After=2009905, chg +0.00%
[0] binutils commit 6b3b0ab89663 ("Make linker assigned symbol dynamic only for shared object")
Tested-by: Heinrich Schuchardt <xypron.glpk@gmx.de> # sandbox_defconfig on amd64, arm64, riscv64
Reviewed-by: Simon Glass <sjg@chromium.org>
Fixes: commit aac53d3d96a2 ("sandbox: Rename EFI runtime sections")
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
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Rename the sections used for placing the EFI runtime so that they don't
start with a '.'. ELF says that sections starting with a '.' are
reserved for system use, but the sandbox runs as a normal user process
so should be using user sections instead.
Clang's ASAN adds redzones to non-user sections and the extra padding
meant that the list of options was being corrupted. Naming the sections
as user sections avoids this issue as clang handles them as we intended.
Signed-off-by: Andrew Scull <ascull@google.com>
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This commit does the same thing as Linux commit 33def8498fdd.
Use a more generic form for __section that requires quotes to avoid
complications with clang and gcc differences.
Remove the quote operator # from compiler_attributes.h __section macro.
Convert all unquoted __section(foo) uses to quoted __section("foo").
Also convert __attribute__((section("foo"))) uses to __section("foo")
even if the __attribute__ has multiple list entry forms.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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The EFI loader code requires certain linker sections to exist. Add these
for sandbox so that the EFI loader code will link.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
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