danielandClaude Fable 5
778f897f1a
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]>
50 lines
1.7 KiB
Diff
50 lines
1.7 KiB
Diff
--- a/config.sub
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+++ b/config.sub
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@@ -1749,7 +1749,7 @@
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| onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \
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| midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi* \
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| nsk* | powerunix* | genode* | zvmoe* | qnx* | emx* | zephyr* \
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- | fiwix* )
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+ | fiwix* | montauk* )
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;;
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# This one is extra strict with allowed versions
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sco3.2v2 | sco3.2v[4-9]* | sco5v6*)
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--- a/gcc/config.gcc
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+++ b/gcc/config.gcc
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@@ -1935,6 +1935,12 @@
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x86_64-*-elf*)
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tm_file="${tm_file} i386/unix.h i386/att.h elfos.h newlib-stdint.h i386/i386elf.h i386/x86-64.h"
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;;
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+x86_64-*-montauk*)
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+ tm_file="${tm_file} i386/unix.h i386/att.h elfos.h newlib-stdint.h i386/i386elf.h i386/x86-64.h montauk.h"
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+ # The Montauk libc has no stdint.h of its own (programs normally use
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+ # the freestanding kernel headers), so GCC must provide one.
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+ use_gcc_stdint=provide
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+ ;;
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x86_64-*-rtems*)
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tm_file="${tm_file} i386/unix.h i386/att.h elfos.h newlib-stdint.h i386/i386elf.h i386/x86-64.h i386/rtemself.h rtems.h"
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;;
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--- a/libgcc/config.host
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+++ b/libgcc/config.host
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@@ -741,6 +741,10 @@
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i[34567]86-*-elf*)
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tmake_file="$tmake_file i386/t-crtstuff t-crtstuff-pic t-libgcc-pic"
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;;
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+x86_64-*-montauk*)
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+ tmake_file="$tmake_file i386/t-crtstuff t-crtstuff-pic t-libgcc-pic"
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+ extra_parts="crtbegin.o crtend.o"
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+ ;;
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x86_64-*-elf* | x86_64-*-rtems*)
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tmake_file="$tmake_file i386/t-crtstuff t-crtstuff-pic t-libgcc-pic"
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case ${host} in
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--- a/fixincludes/mkfixinc.sh
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+++ b/fixincludes/mkfixinc.sh
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@@ -20,6 +20,7 @@
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powerpcle-*-eabisim* | \
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powerpcle-*-eabi* | \
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*-*-vxworks7* | \
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+ *-montauk* | \
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*-musl* )
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# IF there is no include fixing,
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# THEN create a no-op fixer and exit
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