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tools: update offsets tool to work with go versions 1.7 - 1.10

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Older go versions (1.7.x) specify a fixed page size (_PageSize const) as
part of their runtime whereas newer go versions populate the page size at
runtime.

The kernel asm bootstrap code was written with go 1.8 in mind. As a
result it attempts to populate the page size manually which obviously
breaks compilation in go 1.7.

The offsets tool has been updated to emit the special def
"SKIP_PAGESIZE_SETUP" when running under go 1.7 which allows us to
perform conditional compilation of the page setup code inside the
bootstrap asm code.

fixup
This commit is contained in:
Achilleas Anagnostopoulos
2018-03-19 09:01:34 +00:00
parent c0b9f62f78
commit 4e3567f8a1
4 changed files with 116 additions and 73 deletions
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3
Makefile
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@@ -22,7 +22,6 @@ FUZZ_PKG_LIST := src/gopheros/device/acpi/aml
ifeq ($(OS), Linux)
export SHELL := /bin/bash -o pipefail
LD := ld
AS := nasm
@@ -105,7 +104,7 @@ $(BUILD_DIR)/go_asm_offsets.inc:
@mkdir -p $(BUILD_DIR)
@echo "[tools:offsets] calculating OS/arch-specific offsets for g, m and stack structs"
@GOPATH=$(GOPATH) $(GO) run tools/offsets/offsets.go -target-os $(GOOS) -target-arch $(GOARCH) -go-binary $(GO) -out $@
@GOROOT=$(GOROOT) GOPATH=$(GOPATH) $(GO) run tools/offsets/offsets.go -target-os $(GOOS) -target-arch $(GOARCH) -go-binary $(GO) -out $@
$(BUILD_DIR)/arch/$(ARCH)/asm/%.o: src/arch/$(ARCH)/asm/%.s
@mkdir -p $(shell dirname $@)