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Imrpove debug process

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Summary of changes:
- when building the gdb target, the source is built with optimizations
  and inlining disabled (-N -l)
- source Go gdb helpers when running the gdb target
- set split layout (asm + code)
This commit is contained in:
Achilleas Anagnostopoulos 2017-06-28 07:45:53 +01:00
parent cbf36d46ee
commit d65c29ce63
1 changed files with 10 additions and 6 deletions
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16
Makefile
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@ -20,6 +20,7 @@ GOOS := linux
GOARCH := amd64 GOARCH := amd64
GOROOT := $(shell $(GO) env GOROOT) GOROOT := $(shell $(GO) env GOROOT)
GC_FLAGS ?=
LD_FLAGS := -n -T $(BUILD_DIR)/linker.ld -static --no-ld-generated-unwind-info 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 $(GO) run tools/redirects/redirects.go count) AS_FLAGS := -g -f elf64 -F dwarf -I arch/$(ARCH)/asm/ -dNUM_REDIRECTS=$(shell $(GO) run tools/redirects/redirects.go count)
@ -36,7 +37,7 @@ kernel: binutils_version_check kernel_image
kernel_image: $(kernel_target) kernel_image: $(kernel_target)
@echo "[tools:redirects] populating kernel image redirect table" @echo "[tools:redirects] populating kernel image redirect table"
@$(GO) run tools/redirects/redirects.go populate-table $(kernel_target) @$(GO) run tools/redirects/redirects.go populate-table $(kernel_target)
$(kernel_target): $(asm_obj_files) linker_script go.o $(kernel_target): $(asm_obj_files) linker_script go.o
@echo "[$(LD)] linking kernel-$(ARCH).bin" @echo "[$(LD)] linking kernel-$(ARCH).bin"
@$(LD) $(LD_FLAGS) -o $(kernel_target) $(asm_obj_files) $(BUILD_DIR)/go.o @$(LD) $(LD_FLAGS) -o $(kernel_target) $(asm_obj_files) $(BUILD_DIR)/go.o
@ -45,7 +46,7 @@ go.o:
@mkdir -p $(BUILD_DIR) @mkdir -p $(BUILD_DIR)
@echo "[go] compiling go sources into a standalone .o file" @echo "[go] compiling go sources into a standalone .o file"
@GOARCH=$(GOARCH) GOOS=$(GOOS) $(GO) build -n 2>&1 | sed \ @GOARCH=$(GOARCH) GOOS=$(GOOS) $(GO) build -gcflags '$(GC_FLAGS)' -n 2>&1 | sed \
-e "1s|^|set -e\n|" \ -e "1s|^|set -e\n|" \
-e "1s|^|export GOOS=$(GOOS)\n|" \ -e "1s|^|export GOOS=$(GOOS)\n|" \
-e "1s|^|export GOARCH=$(GOARCH)\n|" \ -e "1s|^|export GOARCH=$(GOARCH)\n|" \
@ -107,27 +108,30 @@ VAGRANT_SRC_FOLDER = /home/vagrant/workspace/src/github.com/achilleasa/gopher-os
.PHONY: kernel iso vagrant-up vagrant-down vagrant-ssh run gdb clean .PHONY: kernel iso vagrant-up vagrant-down vagrant-ssh run gdb clean
kernel: kernel:
vagrant ssh -c 'cd $(VAGRANT_SRC_FOLDER); make kernel' vagrant ssh -c 'cd $(VAGRANT_SRC_FOLDER); make GC_FLAGS="$(GC_FLAGS)" kernel'
iso: iso:
vagrant ssh -c 'cd $(VAGRANT_SRC_FOLDER); make iso' vagrant ssh -c 'cd $(VAGRANT_SRC_FOLDER); make GC_FLAGS="$(GC_FLAGS)" iso'
endif endif
run: iso run: iso
qemu-system-$(ARCH) -cdrom $(iso_target) -d int,cpu_reset -no-reboot qemu-system-$(ARCH) -cdrom $(iso_target) -d int,cpu_reset -no-reboot
# When building gdb target disable optimizations (-N) and inlining (l) of Go code
gdb: GC_FLAGS += -N -l
gdb: iso gdb: iso
qemu-system-$(ARCH) -M accel=tcg -s -S -cdrom $(iso_target) & qemu-system-$(ARCH) -M accel=tcg -s -S -cdrom $(iso_target) &
sleep 1 sleep 1
gdb \ gdb \
-ex 'add-auto-load-safe-path $(pwd)' \ -ex 'add-auto-load-safe-path $(pwd)' \
-ex 'set disassembly-flavor intel' \ -ex 'set disassembly-flavor intel' \
-ex 'layout asm' \ -ex 'layout split' \
-ex 'set arch i386:intel' \ -ex 'set arch i386:intel' \
-ex 'file $(kernel_target)' \ -ex 'file $(kernel_target)' \
-ex 'target remote localhost:1234' \ -ex 'target remote localhost:1234' \
-ex 'set arch i386:x86-64:intel' -ex 'set arch i386:x86-64:intel' \
-ex 'source $(GOROOT)/src/runtime/runtime-gdb.py'
@killall qemu-system-$(ARCH) || true @killall qemu-system-$(ARCH) || true
clean: clean: