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Marco Casaroli 8d08885d0f tools/nxflat: Import the NXFLAT thunk generator. 
An NXFLAT module reaches the base firmware through a "thunk" file: one
assembly stub per imported function, generated by mknxflat.  That tool
has always lived outside this repository, in the NuttX buildroot NXFLAT
toolchain, so building an NXFLAT module needs a separate checkout and a
separate build of a tool that links against libbfd.

libbfd is why it stayed out.  It is GPL, which an Apache project cannot
depend on, and it is awkward to obtain besides -- a stock binutils
install often ships libbfd without the libiberty it needs to link.  But
the dependency was never deep.  mknxflat used libbfd for eight calls,
all of them opening the file and walking the symbol table; it never
relocates or rewrites anything.  That is replaced here by reading the
ELF symbol table directly, which removes the dependency outright and
costs about a hundred lines.

The emitted text is unchanged.  The format strings live in the .def
files, which are carried here byte-for-byte from upstream, and the
selection rule for what becomes a thunk is the upstream one: everything
undefined that is not explicitly an object.  Symbol typing cannot be
trusted for this -- imported functions are routinely emitted as
STT_NOTYPE rather than STT_FUNC, while a weakly defined object does
appear as an undefined object -- so the test is on what a symbol is not.

Upstream chose the instruction set at compile time through an "arch"
symlink pointing at either arm/ or thumb2/.  A symlink cannot be carried
in the repository, and one host binary has to serve boards of both
flavours, since lpc31xx is ARM while lpc17xx, tiva, stm32f1 and rp23xx
are Thumb-2.  That choice becomes a runtime "-a" option.  The "-f"
option, which read further command line arguments from a file, is
dropped; nothing in the tree used it.

This commit changes no output.  Against the upstream tool, for both
architectures, with and without -w, over modules exercising the plain,
weak and non-returning thunk paths, the generated thunk files are
byte-identical.

Assisted-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Signed-off-by: Marco Casaroli <marco.casaroli@gmail.com>
2026-08-06 01:38:23 +08:00
..
ameba arch/arm/ameba: resolve the asdk toolchain per-IC 2026-07-17 08:30:47 -03:00
bcm2711 arch/bcm2711, boards/raspberry-pi-4b: Add preliminary support for the BCM2711 and Raspberry Pi 4B. 2024-12-17 16:43:17 +08:00
bl602
ci boards/rp23xx: Split the xipfs configuration into xipfs and xipfs-nxflat. 2026-07-29 07:49:03 -03:00
codeowners docs/codeowners: Add preliminary code owner file 2025-09-05 19:53:06 -04:00
cxd56 fix misspelled names in locally scoped code 2025-05-15 10:12:12 +08:00
esp32 tools/espressif: Add UF2 output support 2026-05-27 14:29:35 -04:00
esp32c3 tools/espressif: add esptool version check to Espressif build system 2024-10-15 20:42:57 +02:00
esp32s2 tools/espressif: Add UF2 output support 2026-05-27 14:29:35 -04:00
esp32s3 tools/espressif: Add UF2 output support 2026-05-27 14:29:35 -04:00
espressif tools/espressif: Add UF2 output support 2026-05-27 14:29:35 -04:00
imx9 arch/arm64/imx9: Support for imx9 edgelock enclave 2025-03-17 21:35:25 +02:00
licensing tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
lwl docs/guides/lwl: move lwl's README.txt to lwl.rst 2025-12-23 15:20:06 +01:00
mpfs tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
nix tools/nix: move nix flakes to tools/ 2025-08-28 10:04:01 +08:00
nxflat tools/nxflat: Import the NXFLAT thunk generator. 2026-08-06 01:38:23 +08:00
pic32 tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
pynuttx build(deps): bump pillow from 12.2.0 to 12.3.0 in /tools/pynuttx 2026-07-22 11:35:43 +08:00
rp23xx tools/rp{2040,23xx}: Ensure that picotool is found or built 2025-08-22 00:30:28 +08:00
rp2040 tools: rp2040: Drop uninitialized name length check 2026-07-10 12:39:44 +08:00
simwifi fix(udhcpc): missing interface name in log message 2025-05-05 09:32:31 +08:00
zds style: Fix "the the" typo across the codebase. 2026-03-23 11:07:49 +01:00
.gitignore tools/nxflat: Import the NXFLAT thunk generator. 2026-08-06 01:38:23 +08:00
aarch64-unknown-nuttx-macho.json tools: Enable Rust sim builds on Intel Macs 2026-06-08 21:22:45 +08:00
aarch64-unknown-nuttx.json tools/rust: Move NuttX Rust target specs into nuttx 2026-06-01 00:02:41 +08:00
abi_check.py abi_check.py:Check ABI compatibility between different ELF versions. 2026-01-28 18:32:39 +01:00
b16.c tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
bdf-converter.c tools/bdf-converter: Fix loop termination condition. 2025-03-18 10:12:23 -03:00
board_romfs_mkpasswd.sh !tools/mkpasswd: PBKDF2 host tool and ROMFS passwd build integration 2026-07-21 20:19:14 +08:00
btdecode.sh arch/risc-v/espressif/esp32p4: Support ESP32-P4 on NuttX 2026-03-09 21:40:25 +01:00
build-globals.sh libc/elf: rename modlib to libelf 2025-04-11 09:43:22 +08:00
callstack.py tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
cfgdefine.c libc/elf: rename modlib to libelf 2025-04-11 09:43:22 +08:00
cfgdefine.h tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
cfgparser.c tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
cfgparser.h tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
check_passwd_keys.sh !boards: enforce secure ROMFS passwd and TEA key setup 2026-07-09 22:41:11 +08:00
checkkconfig.py tools[feat]: add config check tool 2026-01-14 17:50:18 +01:00
checkpatch.sh tools/checkpatch.sh: Enhance stdin support for patch checking 2026-03-09 11:08:52 +08:00
checkrelease.sh tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
CMakeLists.txt tools/CMakeLists.txt: Add mkpasswd binaries 2026-04-16 01:45:48 +08:00
cmpconfig.c tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
cnvwindeps.c tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
Config.mk tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-07-28 21:26:03 -03:00
configure.bat tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
configure.c style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
configure.sh !tools/mkpasswd: PBKDF2 host tool and ROMFS passwd build integration 2026-07-21 20:19:14 +08:00
configure_completion.bash tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
convert-comments.c tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
copydir.bat style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
copydir.sh style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
coredump.py coredump.py:bug fix python file not have rename 2024-10-30 12:29:22 +08:00
csvparser.c tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
csvparser.h tools/mksyscall: fix 106: Unexpected end of line: "FAR char * co" 2025-03-08 12:39:24 +08:00
D.defs debug symbol level: Use config instead 2024-12-04 22:36:45 +08:00
define.bat style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
define.sh style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
detab.c tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
Directories.mk libbuitin/compiler_rt: Supports separate builtin rt.builtins or rt.profile 2024-11-12 16:12:53 +08:00
discover.py tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
doreleasenotes.py tools/doreleasenotes: remove deprecater API 2025-05-27 20:34:54 +08:00
Export.mk tools: Export LLVM flags for kernel build 2025-01-26 20:22:35 +08:00
find_symbol_callers.sh toos/scipts: add script to find symbol caller 2025-12-31 08:47:23 -03:00
flash_writer.py fix misspelled names in locally scoped code 2025-05-15 10:12:12 +08:00
FlatLibs.mk libbuitin/compiler_rt: Supports separate builtin rt.builtins or rt.profile 2024-11-12 16:12:53 +08:00
gcov.py gcov: Refactoring the implementation framework of gcov 2025-07-03 00:17:58 +08:00
gdbserver.py gdbserver.py:add x86_64 arch 2026-01-24 23:31:43 +08:00
gen_passwd_keys.sh boards: add CI ROMFS passwd credentials and refresh docs 2026-07-09 22:41:11 +08:00
gencromfs.c tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
host_info_dump.py tools: add build path support on host_info tool 2026-05-20 13:12:38 -04:00
host_info_parse.py tools: fix make host_info flag parsing and config string escaping 2026-02-05 14:23:19 +01:00
i486-unknown-nuttx.json tools/rust: Move NuttX Rust target specs into nuttx 2026-06-01 00:02:41 +08:00
ide_exporter.py tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
incdir.bat tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
incdir.c tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
incdir.sh tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
indent.sh tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
initialconfig.c tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
jlink-nuttx.c tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
kasan_global.py kasan/globals: fix compile error 2024-12-05 20:37:47 +08:00
kconfig.bat tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
kconfig2html.c style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
KernelLibs.mk libbuitin/compiler_rt: Supports separate builtin rt.builtins or rt.profile 2024-11-12 16:12:53 +08:00
LibTargets.mk clang:libclang_rt.builtins-xxx.a supports builtin 2024-10-28 16:38:45 +08:00
link.bat tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
link.sh tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
lowhex.c tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
macar-qcs.sh tools/macar-qcs.sh: migrate license to ASF 2024-12-16 14:14:55 +08:00
Make.defs tools: Rename apps-or-nuttx-Make.defs to Make.defs 2024-10-17 07:55:02 +08:00
Makefile.host tools/nxflat: Import the NXFLAT thunk generator. 2026-08-06 01:38:23 +08:00
merge_config.py install kconfiglib using apt repo 2024-12-02 13:43:29 +08:00
mkallsyms.py libs/libc/symtab: fix bogus symbol names for out-of-range addresses 2026-08-05 21:51:25 +08:00
mkallsyms.sh sim: fix mkallsyms for Objective-C symbols on macOS 2026-05-08 19:51:39 +08:00
mkconfig.c tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
mkconfigvars.sh tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
mkctags.sh tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
mkdeps.c tools/mkdeps: increase MAX_BUFFER from 16384 to 65536 2024-10-31 08:55:07 +08:00
mkexport.sh build/export: Fix missing gnu-elf.ld copy and toolchain script. 2025-09-14 10:44:51 +08:00
mkfsdata.pl tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
mkfsdata.py style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
mknulldeps.sh tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
mkpasswd.c !tools/mkpasswd: PBKDF2 host tool and ROMFS passwd build integration 2026-07-21 20:19:14 +08:00
mkromfsimg.sh tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
mksymtab.c tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
mksyscall.c tools:mksyscall fix compilation warning 2026-05-09 09:42:58 +08:00
mkversion.c tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
mkwindeps.sh tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
netusb.sh tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
noteinfo.c tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
nxstyle.c arch/arm/rtl8721f: bring up minimal NSH (P1) 2026-07-30 17:04:14 +08:00
nxstyle_sweep.sh tools/nxstyle: add a script to check a whole tree at once 2026-07-28 02:43:24 +08:00
nxtagspkgsfetch.sh tools/nxtagspkgsfetch.sh: Fetch tags packages for NuttX and Apps. 2025-12-17 08:12:44 -03:00
parsecallstack.py tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
parsememdump.py mm: dump node overheadp during memdump 2024-11-25 00:42:34 +08:00
parsetrace.py tools/parsetrace.py: Fix get_typesize bug in parsetrace.py 2026-01-26 23:22:41 +01:00
passwd_keys.mk !tools/mkpasswd: PBKDF2 host tool and ROMFS passwd build integration 2026-07-21 20:19:14 +08:00
pre-commit tools: add git pre-commit hook based on checkpatch.sh 2023-05-03 14:42:34 +02:00
process_config.py cmake(enhance):include-style defconfig can modified via menuconfig 2026-01-15 15:42:17 -03:00
process_config.sh tools/process_config.sh: Fix sed errors 2025-07-03 09:41:56 -03:00
promptpasswd.sh !tools/mkpasswd: PBKDF2 host tool and ROMFS passwd build integration 2026-07-21 20:19:14 +08:00
ProtectedLibs.mk libbuitin/compiler_rt: Supports separate builtin rt.builtins or rt.profile 2024-11-12 16:12:53 +08:00
refresh.sh tools: Modify refresh.sh to support update all configs from a board 2025-06-21 04:21:10 +08:00
rmcr.c tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
Rust.defs tools: Enable Rust sim builds on Intel Macs 2026-06-08 21:22:45 +08:00
sethost.sh tools: Enable Rust sim builds on Intel Macs 2026-06-08 21:22:45 +08:00
showsize.sh tools/showsize.sh: support pass custom nuttx executable 2024-10-13 02:11:12 +08:00
simbridge.sh tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
simhostroute.sh tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
simlaunch.sh sim:support sim elf and dynamic libs package in post build 2024-11-06 01:56:44 +08:00
size_report.py fix: TreeNode has same attribute with NodeMixin 2023-10-09 17:51:01 -04:00
splashscreen_converter.py drivers/video/fb.c: Add startup splashscreen option 2025-04-30 06:38:05 -03:00
stackusage.py tools/stackusage.py: use toolchain binaries instead of Python libraries 2026-03-17 11:26:44 -03:00
stm32_pinmap_tool.py fix misspelled names in locally scoped code 2025-05-15 10:12:12 +08:00
Swift.defs debug symbol level: Use config instead 2024-12-04 22:36:45 +08:00
testbuild.ps1 tools/ci: Added esptool for Windows Native 2026-04-13 23:55:10 +08:00
testbuild.sh testbuild.sh: CMake Added -DNXTMPDIR 2026-04-22 06:22:36 +08:00
toolchain.cmake.export arch/crt0.c: revert entry _start 2025-12-10 19:06:04 +08:00
uncrustify.cfg tools/uncrustify: Update uncrustify for better support 2026-07-17 15:00:06 -03:00
Unix.mk !tools/mkpasswd: PBKDF2 host tool and ROMFS passwd build integration 2026-07-21 20:19:14 +08:00
unlink.bat tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
unlink.sh tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
update_romfs_password.sh !tools/mkpasswd: PBKDF2 host tool and ROMFS passwd build integration 2026-07-21 20:19:14 +08:00
version.sh tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
Win.mk libc: add support for C23 stdbit.h with bit manipulation macros 2026-03-02 09:09:40 -03:00
x86_64-unknown-nuttx-macho.json tools: Enable Rust sim builds on Intel Macs 2026-06-08 21:22:45 +08:00
x86_64-unknown-nuttx.json tools/rust: Move NuttX Rust target specs into nuttx 2026-06-01 00:02:41 +08:00
xmlrpc_test.py tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
Zig.defs tools/Zig.defs: Fix Zig builds on sim:x86_64 2026-07-20 09:36:56 +08:00
zipme.sh tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00