taigrr/gopher-os
1
0
Fork 0
mirror of https://github.com/taigrr/gopher-os synced 2025-01-18 04:43:13 -08:00
Code Issues Projects Releases Wiki Activity

Generate offset definitions as part of the build process

Browse Source 
The Makefile contains rules for invoking the offsets tool to generate
the offset definitions for members of the g, m and stack structs. The
definitions are stored in BUILD_DIR and BUILD_DIR is passed as an
include target to nasm.
This commit is contained in:
Achilleas Anagnostopoulos 2017-06-27 18:51:39 +01:00
parent 62aca2f2de
commit 6820ffef2b
1 changed files with 14 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
Makefile
View File

@ -22,7 +22,7 @@ GOROOT := $(shell $(GO) env GOROOT)
GC_FLAGS ?=
LD_FLAGS := -n -T $(BUILD_DIR)/linker.ld -static --no-ld-generated-unwind-info
AS_FLAGS := -g -f elf64 -F dwarf -I arch/$(ARCH)/asm/ -dNUM_REDIRECTS=$(shell $(GO) run tools/redirects/redirects.go count)
AS_FLAGS := -g -f elf64 -F dwarf -I $(BUILD_DIR)/ -I arch/$(ARCH)/asm/ -dNUM_REDIRECTS=$(shell $(GO) run tools/redirects/redirects.go count)
MIN_OBJCOPY_VERSION := 2.26.0
HAVE_VALID_OBJCOPY := $(shell objcopy -V | head -1 | awk -F ' ' '{print "$(MIN_OBJCOPY_VERSION)\n" $$NF}' | sort -ct. -k1,1n -k2,2n && echo "y")
@ -37,8 +37,8 @@ kernel: binutils_version_check kernel_image
kernel_image: $(kernel_target)
@echo "[tools:redirects] populating kernel image redirect table"
@$(GO) run tools/redirects/redirects.go populate-table $(kernel_target)
$(kernel_target): $(asm_obj_files) linker_script go.o
$(kernel_target): asm_files linker_script go.o
@echo "[$(LD)] linking kernel-$(ARCH).bin"
@$(LD) $(LD_FLAGS) -o $(kernel_target) $(asm_obj_files) $(BUILD_DIR)/go.o
@ -65,6 +65,9 @@ go.o:
@objcopy \
--add-symbol kernel.Kmain=.text:0x`nm $(BUILD_DIR)/go.o | grep "kmain.Kmain$$" | cut -d' ' -f1` \
--globalize-symbol _rt0_interrupt_handlers \
--globalize-symbol runtime.g0 \
--globalize-symbol runtime.m0 \
--globalize-symbol runtime.physPageSize \
$(BUILD_DIR)/go.o $(BUILD_DIR)/go.o
binutils_version_check:
@ -86,11 +89,19 @@ linker_script:
-E -x \
c arch/$(ARCH)/script/linker.ld.in | grep -v "^#" > $(BUILD_DIR)/linker.ld
$(BUILD_DIR)/go_asm_offsets.inc:
@mkdir -p $(BUILD_DIR)
@echo "[tools:offsets] calculating OS/arch-specific offsets for g, m and stack structs"
@$(GO) run tools/offsets/offsets.go -target-os $(GOOS) -target-arch $(GOARCH) -go-binary $(GO) -out $@
$(BUILD_DIR)/arch/$(ARCH)/asm/%.o: arch/$(ARCH)/asm/%.s
@mkdir -p $(shell dirname $@)
@echo "[$(AS)] $<"
@$(AS) $(AS_FLAGS) $< -o $@
asm_files: $(BUILD_DIR)/go_asm_offsets.inc $(asm_obj_files)
iso: $(iso_target)
$(iso_target): iso_prereq kernel_image