coreboot-kgpe-d16/util
Jacob Garber 84c7d2dfea xcompile: Disable null pointer optimizations
According to the C standard, accessing the NULL pointer (memory at
address zero) is undefined behaviour, and so GCC is allowed to optimize
it out. Of course, accessing this memory location is sometimes
necessary, so this optimization can be disabled using
-fno-delete-null-pointer-checks. This is already done in coreboot, but
adding it to xcompile will also disable it for all the payloads. For
example, coreinfo compiled with LTO libpayload crashes when this flag
isn't set, presumably because the compiler is optimizing something out
that it shouldn't.

Change-Id: I4492277f02418ade3fe7a75304e8e0611f49ef36
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38289
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-02-03 16:46:00 +00:00
..
abuild
acpi
amdfwtool util/amdfwtool: guard typedef aliases 2020-01-20 14:43:31 +00:00
amdtools
archive
autoport autoport: Don't add useless whitespace in comments 2020-01-28 18:38:06 +00:00
bincfg
board_status
bucts
cavium
cbfstool util/cbfstool/lzma: Make clang-11+'s indentation checker happy 2020-02-01 19:51:31 +00:00
cbmem util/*: more typo fixes 2020-01-30 13:47:49 +00:00
chromeos
crossgcc
docker util/docker/Makefile: Correct help output 2020-02-01 19:49:03 +00:00
dtd_parser
ectool
exynos
find_usbdebug
futility
fuzz-tests
genbuild_h
genprof
gitconfig
ifdtool commonlib: Add commonlib/bsd 2020-01-28 06:36:13 +00:00
intelmetool
inteltool util/inteltool: Add GPIO dumping capabilites for Ice Lake U systems 2020-02-01 19:51:51 +00:00
intelvbttool commonlib: Add commonlib/bsd 2020-01-28 06:36:13 +00:00
ipqheader
k8resdump
kbc1126
kconfig
lint util/lint: enforce SPDX license headers in src/superio 2020-01-30 13:55:41 +00:00
mainboard/google
marvell util/*: more typo fixes 2020-01-30 13:47:49 +00:00
me_cleaner
mma
msrtool util/msrtool: Fix formatting issues reported by checkpatch 2020-01-30 13:01:50 +00:00
mtkheader
nvidia
nvramtool util/*: more typo fixes 2020-01-30 13:47:49 +00:00
pgtblgen util/*: more typo fixes 2020-01-30 13:47:49 +00:00
pmh7tool
post
qualcomm
release
riscv
rockchip
sconfig commonlib: Add commonlib/bsd 2020-01-28 06:36:13 +00:00
scripts
showdevicetree
spdtool
spkmodem_recv
superiotool util/*: more typo fixes 2020-01-30 13:47:49 +00:00
supermicro
testing
uio_usbdebug
util_readme
vgabios
viatool
x86
xcompile xcompile: Disable null pointer optimizations 2020-02-03 16:46:00 +00:00
README.md

README.md

  • abuild - coreboot autobuild script builds coreboot images for all available targets. bash
  • acpi - Walk through all ACPI tables with their addresses. bash
  • amdfwtool - Create AMD Firmware combination C
  • amdtools - A set of tools to compare extended) K8 memory settings. Perl
  • archive - Concatenate files and create an archive C
  • mksunxiboot - A simple tool to generate bootable image for sunxi platform. C
  • autoport - Automated porting coreboot to Sandy Bridge/Ivy Bridge platforms Go
  • bincfg - Compiler/Decompiler for data blobs with specs Lex Yacc
  • board_status - Tools to collect logs and upload them to the board status repository Bash Go
  • bucts - A tool to manipulate the BUC.TS bit on Intel targets. C
  • cavium - Devicetree_convert Tool to convert a DTB to a static C file Python
  • cbfstool
    • cbfstool - For manipulating CBFS file C
    • fmaptool - Converts plaintext fmd files into fmap blobs C
    • rmodtool - Creates rmodules C
    • ifwitool - For manipulating IFWI C
  • cbmem - Cbmem console log reader C
  • checklist - Board implementation checklist generator Make
  • chromeos - These scripts can be used to extract System Agent reference code and other blobs (e.g. mrc.bin, refcode, VGA option roms) from a Chrome OS recovery image. C
  • crossgcc - A cross toolchain builder for -elf toolchains (ie. no libc support)
  • docker - Dockerfiles for coreboot-sdk, coreboot-jenkins-node, coreboot.org-status and docs.coreboot.org
  • dtd_parser - DTD structure parser Python2
  • ectool - Dumps the RAM of a laptop's Embedded/Environmental Controller (EC). C
  • exynos - Computes and fills Exynos ROM checksum (for BL1 or BL2). Python2
  • find_usbdebug - Help find USB debug ports
  • futility - Firmware utility for signing ChromeOS images Make
  • fuzz-tests - Create test cases that crash the jpeg code. C
  • genbuild_h - Generate build system definitions Shell
  • genprof - Format function tracing logs Bash C
  • gitconfig - Initialize git repository submodules install git hooks Bash
  • ifdtool - Extract and dump Intel Firmware Descriptor information C
  • intelmetool - Dump interesting things about Management Engine even if hidden C
  • inteltool - Provides information about the Intel CPU/chipset hardware configuration (register contents, MSRs, etc). C
  • intelvbttool - Parse VBT from VGA BIOS C
  • ipqheader
    • createxbl.py - Concatentates XBL segments into one ELF image Python
    • ipqheader.py - Returns a packed MBN header image with the specified base and size Python
    • mbncat.py - Generate ipq8064 uber SBL Python
    • mbn_tools.py - Contains all MBN Utilities for image generation Python
  • k8resdump - This program will dump the IO/memory/PCI resources from the K8 memory controller C
  • kbc1126 - Tools used to dump the two blobs from the factory firmware of many HP laptops with 8051-based SMSC KBC1098/KBC1126 embedded controller and insert them to the firmware image. C
  • kconfig - Build system Make
  • lint - Source linter and linting rules Shell
  • marvell - Add U-Boot boot loader for Marvell ARMADA38X C
  • me_cleaner - Tool for partial deblobbing of Intel ME/TXE firmware images Python
  • mma - Memory Margin Analysis automation tests Bash
  • msrtool - Dumps chipset-specific MSR registers. C
  • mtkheader - Generate MediaTek bootload header. Python2
  • nvidia - nvidia blob parsers
  • nvramtool - Reads and writes coreboot parameters and displaying information from the coreboot table in CMOS/NVRAM. C
  • pmh7tool - Dumps, reads and writes PMH7 registers on Lenovo ThinkPads. PMH7 is used for switching on and off the power of some devices on the board such as dGPU. C
  • post - Userspace utility that can be used to test POST cards. C
  • qualcomm - CMM script to debug Qualcomm coreboot environments. CMM
  • release - Generate coreboot release Bash
  • riscv
    • make-spike-elf.sh - Converts a flat file into an ELF, that can be passed to SPIKE, the RISC-V reference emulator.Bash
    • sifive-gpt.py - Wraps the bootblock in a GPT partition for SiFive's bootrom. Python3
  • rockchip - Generate Rockchip idblock bootloader. Python2
  • romcc - Compile a C source file generating a binary that does not implicitly use RAM. C
  • sconfig - coreboot device tree compiler Lex Yacc
  • scripts
    • config - Manipulate options in a .config file from the command line Bash
    • cross-repo-cherrypick - Pull in patches from another tree from a gerrit repository. Shell
    • dts-to-fmd.sh -Converts a depthcharge fmap.dts into an fmaptool compatible .fmd format Bash
    • find-unused-kconfig-symbols.sh - Points out Kconfig variables that may be unused. There are some false positives, but it serves as a starting point Shell
    • gerrit-rebase - Applies all commits that from-branch has over to-branch, based on a common ancestor and gerrit meta-data Bash
    • get_maintainer.pl - Print selected MAINTAINERS information for the files modified in a patch or for a file Perl
    • maintainers.go - Build subsystem Maintainers Go
    • no-fsf-addresses.sh - Removes various FSF addresses from license headers Shell
    • parse-maintainers.pl - Script to alphabetize MAINTAINERS file Perl
    • ucode_h_to_bin.sh - Microcode conversion tool Bash
    • update_submodules - Check all submodules for updates Bash
  • showdevicetree - Compile and dump the device tree C
  • spkmodem_recv - Decode spkmodem signals C
  • superiotool - A user-space utility to detect Super I/O of a mainboard and provide detailed information about the register contents of the Super I/O. C
  • testing - coreboot test targets Make
  • uio_usbdebug - Debug coreboot's usbdebug driver inside a running operating system (only Linux at this time). C
  • util_readme - Creates README.md of description files in ./util subdirectories Bash
  • vgabios - emulated vga driver for qemu C
  • viatool - Extract certain configuration bits on VIA chipsets and CPUs. C
  • x86 - Generates 32-bit PAE page tables based on a CSV input file. Go
  • xcompile - Cross compile setup Bash