diff options
| author | Richard Braun <rbraun@sceen.net> | 2018-07-10 19:40:20 +0200 |
|---|---|---|
| committer | Richard Braun <rbraun@sceen.net> | 2018-07-10 21:46:41 +0200 |
| commit | c2bd2fdd98d68d37982f95e813c83c1688311f9e (patch) | |
| tree | d1d8a727ca16a65911e53a18a568479ec19fb882 /arch | |
| parent | 9ea1595a9156f2818b216d883e25f63bd74459c0 (diff) | |
x86: add portable architecture-specific qemu make target
This target makes running QEMU simpler on non-x86 hosts.
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/Makefile | 9 | ||||
| -rwxr-xr-x | arch/x86/tools/qemu.sh | 41 |
2 files changed, 50 insertions, 0 deletions
diff --git a/arch/x86/Makefile b/arch/x86/Makefile index 4ae88532..e0220f84 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -1,3 +1,12 @@ +define run_qemu_x86 + $(call xbuild_action,QEMU,$@) \ + $(SRCDIR)/arch/x86/tools/qemu.sh "$(OBJCOPY)" +endef + +.PHONY: qemu +qemu: x15 + $(call run_qemu_x86) + ifeq ($(shell uname -m),x86_64) KCONFIG_DEFCONFIG := amd64_defconfig else diff --git a/arch/x86/tools/qemu.sh b/arch/x86/tools/qemu.sh new file mode 100755 index 00000000..c7488792 --- /dev/null +++ b/arch/x86/tools/qemu.sh @@ -0,0 +1,41 @@ +#!/bin/sh + +# Amount of physical memory +RAM=1024 + +# Number of processors. Keep this below the number of physical processors +# because the kernel doesn't replace spinning with sleeping from within +# a virtual machine, which causes performance to collapse. +NR_CPUS=4 + + +# Don't change from here unless you know what you're doing + +# QEMU system emulator +QEMU_EXE=qemu-system-x86_64 + +OBJCOPY="$1" +NATIVE_ARCH=$(uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/) + +if [ "$NATIVE_ARCH" != x86 ]; then + KVM= +elif lsmod | grep -q '^kvm'; then + KVM="-enable-kvm -cpu host" +fi + +X15=$PWD/x15 +TMPDIR=$(mktemp -d) + +$OBJCOPY -O elf32-i386 $X15 $TMPDIR/x15 + +cd $TMPDIR +$QEMU_EXE $KVM \ + -ctrl-grab \ + -gdb tcp::1234 \ + -m $RAM \ + -smp $NR_CPUS \ + -monitor stdio \ + -kernel x15 \ + -append "console=atcons" + +rm -rf $TMPDIR |