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112 lines
3.9 KiB
Makefile
112 lines
3.9 KiB
Makefile
# Targets for running and debugging in Qemu/KVM
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QEMUCPUS ?= 4
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INITRD ?= /dev/null
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# Switch to curses if no graphical output is available
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ifeq ($(DISPLAY),)
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export QEMUDISPLAY ?= curses
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else
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# Macos display
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ifeq ($(shell uname),Darwin)
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export QEMUDISPLAY ?= cocoa
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else
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export QEMUDISPLAY ?= gtk
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endif
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endif
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export QEMUEXTRAFLAGS ?=
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# Architecture Specific flags
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QEMUFLAGS += -k en-us -machine pcspk-audiodev=pa -d guest_errors -m 2048
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# Macos sound
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ifeq ($(shell uname),Darwin)
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QEMUFLAGS += -audiodev coreaudio,id=pa
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else
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QEMUFLAGS += -audiodev pa,id=pa
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endif
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DBGKERNEL ?= $(KERNEL64)
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DBGARCH ?= i386:x86-64
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QEMU ?= qemu-system-x86_64
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QEMUKERNEL ?= -kernel $(KERNEL) -initrd $(INITRD)
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KVMFLAGS = -enable-kvm -cpu host
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QEMUDBGFLAGS = -no-shutdown -no-reboot
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GDB = $(PREFIX)gdb
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ifneq ($(XDG_RUNTIME_DIR),)
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# We should prefer using domain sockets in a private directory
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GDBPORT ?= $(XDG_RUNTIME_DIR)/stubs-gdb.sock
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else
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# but fall back to PID + 1024, which should be an unprivileged unique port on single- and multiuser systems
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GDBPORT ?= :$(shell echo $$(($$(id -u) + 1024)))
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endif
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ifneq ($(findstring /,$(GDBPORT)),)
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QEMUGDB = -chardev socket,path=${GDBPORT},server=on,wait=off,id=gdb0 -gdb chardev:gdb0
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else
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QEMUGDB = -gdb tcp:${GDBPORT}
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endif
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# (gdb itself supports either :port or a path as target)
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qemu: all
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@echo "QEMU ${KERNEL}"
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${VERBOSE} $(QEMU) $(QEMUKERNEL) $(QEMUGDB) -display ${QEMUDISPLAY} -smp $(QEMUCPUS) $(QEMUFLAGS) ${QEMUEXTRAFLAGS}
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# Runs StuBS in Qemu with with hardware accelerations (KVM support) enabled
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# The started emulator provides several virtual CPUs that execute in parallel.
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kvm: all
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@echo "KVM ${KERNEL}"
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${VERBOSE} ${QEMU} $(QEMUKERNEL) $(QEMUGDB) -display ${QEMUDISPLAY} -smp $(QEMUCPUS) $(QEMUFLAGS) ${QEMUEXTRAFLAGS} $(KVMFLAGS)
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# Execute Qemu with activated GDB stub and directly connect GDB to the spawned Qemu.
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gdb: all
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${VERBOSE} $(GDB) "$(DBGKERNEL)" \
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-ex "set arch $(DBGARCH)" \
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-ex "target remote | exec $(QEMU) -gdb stdio $(QEMUKERNEL) -smp $(QEMUCPUS) -S $(QEMUFLAGS) $(DBGFLAGS)"
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################################################################
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# Rekursive Targets: Setzen einzelner QEMU Paramter
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################################################################
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################################################################
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# Debugging mit GDB
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# Sinnvoll anwendbar mit den Targets: qemu, kvm, *-curses, *-serial
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%-gdb:
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${VERBOSE} ${MAKE} QEMUEXTRAFLAGS="${QEMUEXTRAFLAGS} -S" $*
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# um sich mit GDB auf dem Standardport zu verbinden
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connect-gdb:
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${VERBOSE} gdb -ex "target remote ${GDBPORT}" $(DBGKERNEL)
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################################################################
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# Eine -display Variante erzwingen
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%-curses:
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${VERBOSE} ${MAKE} QEMUDISPLAY="curses" QEMUSERIAL="vc:80Cx24C" $*
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%-x11:
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${VERBOSE} ${MAKE} QEMUDISPLAY=gtk $*
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################################################################
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# Serial-Ausgabe
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QEMUSERIAL ?= vc:80Cx24C
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QEMUFLAGS += -serial $(QEMUSERIAL)
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%-serial:
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@echo "HINT: C-a x: Terminate QEMU; C-a c: Open QEMU console"
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${VERBOSE} ${MAKE} QEMUSERIAL=mon:stdio $*
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# Help for Qemu targets
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help::
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@$(echo) "System Emulation\n" \
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" \e[3mqemu\e[0m Starts $(PROJECT) in QEMU\n" \
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" Due to the internal design of QEMU, some things (especially\n" \
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" race conditions) might behave different compared to hardware!\n\n" \
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" \e[3mkvm\e[0m Starts $(PROJECT) in KVM, a hardware-accelerated virtual machine\n\n" \
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" \e[3m*-serial\e[0m Redirect the serial console to stdout (e.g., qemu-serial, kvm-serial)\n\n" \
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" \e[3m*-curses\e[0m Use QEMU's curses interface (e.g., qemu-curses).\n"\
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" \e[3m*-x11\e[0m Use QEMU's GTK interface (e.g., qemu-x11).\n\n"\
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" \e[3m*-gdb\e[0m Start Simulator with internal GDB stub and wait for a GDB\n" \
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" to attach. (e.g., qemu-gdb)\n" \
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" \e[3mconnect-gdb\e[0m Connect to waiting GDB. Execute in a second terminal!\n\n"\
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# Phony targets
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.PHONY: qemu kvm help
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