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Update kernel and makefiles to enable use of GS segment

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This commit is contained in:
Jeremy Soller 2021-02-23 09:23:37 -07:00
parent 3a9f308db6
commit b2b49fbd77
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GPG key ID: E988B49EE78A7FB1
3 changed files with 24 additions and 7 deletions
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2
kernel

@ -1 +1 @@
Subproject commit ba330ffc9abdb07d59ca3c5b386f07e4fb26d870
Subproject commit f873fc7e1a20ac9a5630ec031a086903d2917792

12
mk/kernel.mk
View file

@ -16,21 +16,21 @@ build/libkernel_live.a: kernel/Cargo.toml kernel/src/* kernel/src/*/* kernel/src
cd kernel && \
cargo rustc --lib --target=$(ROOT)/kernel/targets/$(KTARGET).json --release --features live -Z build-std=core,alloc -- -C soft-float -C debuginfo=2 -C lto --emit link=../$@
build/kernel: kernel/linkers/$(ARCH).ld build/libkernel.a
build/kernel: kernel/linkers/$(ARCH).ld mk/kernel_ld.sh build/libkernel.a
export PATH="$(PREFIX_PATH):$$PATH" && \
$(LD) --gc-sections -z max-page-size=0x1000 -T $< -o $@ build/libkernel.a && \
$(ROOT)/mk/kernel_ld.sh $(LD) --gc-sections -z max-page-size=0x1000 -T $< -o $@ build/libkernel.a && \
$(OBJCOPY) --only-keep-debug $@ $@.sym && \
$(OBJCOPY) --strip-debug $@
build/kernel_coreboot: kernel/linkers/$(ARCH).ld build/libkernel_coreboot.a build/live.o
build/kernel_coreboot: kernel/linkers/$(ARCH).ld mk/kernel_ld.sh build/libkernel_coreboot.a build/live.o
export PATH="$(PREFIX_PATH):$$PATH" && \
$(LD) --gc-sections -z max-page-size=0x1000 -T $< -o $@ build/libkernel_coreboot.a build/live.o && \
$(ROOT)/mk/kernel_ld.sh $(LD) --gc-sections -z max-page-size=0x1000 -T $< -o $@ build/libkernel_coreboot.a build/live.o && \
$(OBJCOPY) --only-keep-debug $@ $@.sym && \
$(OBJCOPY) --strip-debug $@
build/kernel_live: kernel/linkers/$(ARCH).ld build/libkernel_live.a build/live.o
build/kernel_live: kernel/linkers/$(ARCH).ld mk/kernel_ld.sh build/libkernel_live.a build/live.o
export PATH="$(PREFIX_PATH):$$PATH" && \
$(LD) --gc-sections -z max-page-size=0x1000 -T $< -o $@ build/libkernel_live.a build/live.o && \
$(ROOT)/mk/kernel_ld.sh $(LD) --gc-sections -z max-page-size=0x1000 -T $< -o $@ build/libkernel_live.a build/live.o && \
$(OBJCOPY) --only-keep-debug $@ $@.sym && \
$(OBJCOPY) --strip-debug $@

17
mk/kernel_ld.sh Executable file
View file

@ -0,0 +1,17 @@
#!/usr/bin/env bash
set -ex
LD="$1"
shift
if "${LD}" -z use-gs-for-tls 2>&1 |
grep "warning: -z use-gs-for-tls ignored" &> /dev/null
then
echo "Please update your prefix:" >&2
echo " rm -rf prefix" >&2
echo " make prefix" >&2
exit 1
fi
exec "${LD}" -z use-gs-for-tls "$@"