Every libbfd-based native tool (objdump, as, ld, ar, nm, ...) page
faulted at startup: binutils 2.43 keeps BFD's error state in
_Thread_local variables, and MontaukOS has no TLS runtime (no FS-base
setup, no PT_TLS handling), so the %fs:0 access in bfd_init trapped at
address 0. elfedit survived only because it does not link libbfd.
Patch bfd/sysdep.h to define the TLS storage macro to empty under
__montauk__ (binutils has no fallback of its own; ac_cv_tls=none does
not even compile). Single-threaded tools lose nothing.
Confirmed on the OS: objdump -S disassembles hello.elf in the
terminal. Real TLS support (FS base + PT_TLS in the ELF loader) stays
on the roadmap for the GCC/libstdc++ milestone.
Co-Authored-By: Claude Fable 5 <[email protected]>
Add build-montauk-toolchain.sh: builds an OS-aware cross GCC/binutils
(same versions and prefix as the bare-metal x86_64-elf toolchain) whose
x86_64-montauk target links static ET_EXEC binaries against the Montauk
libc sysroot with no special flags: 4 KiB max page size for the kernel
ELF loader, -mno-red-zone by default, crt1/crti/crtn + -lc from the
sysroot, __montauk__ defined. Target patches are checked into
toolchain/patches/, the GCC target header into toolchain/files/.
sys/types.h now includes <stdint.h> so hosted code (libgcov and
friends) sees intptr_t via the stdio include chain.
Co-Authored-By: Claude Fable 5 <[email protected]>
danielandClaude Fable 5