qemu-system-arm -cpu cortex-m3 -machine lm3s6965evb -nographic -vga none -kernel ~/qemu/tos.elf
qemu-system-arm -cpu cortex-a9 -machine vexpress-a9 -smp 1 -nographic -vga none -m 512M -kernel ~/qemu/u-boot
qemu-system-arm -cpu cortex-a9 -machine vexpress-a9 -smp 1 -nographic -vga none -m 512M -kernel ./rtthread.elf
qemu-system-arm -cpu cortex-a9 -machine vexpress-a9 -smp 1 -nographic -vga none -m 512M -kernel ./tos.elf
qemu :
gdbserver tcp::1234
gdb vmlinux
target remote localhost:1234
b start_kernel
continue/c
backtrace
info frame
print p 变量
n next
s single
disassemble main
Supported machines are: akita Sharp SL-C1000 (Akita) PDA (PXA270) ast2500-evb Aspeed AST2500 EVB (ARM1176) borzoi Sharp SL-C3100 (Borzoi) PDA (PXA270) canon-a1100 Canon PowerShot A1100 IS cheetah Palm Tungsten|E aka. Cheetah PDA (OMAP310) collie Sharp SL-5500 (Collie) PDA (SA-1110) connex Gumstix Connex (PXA255) cubieboard cubietech cubieboard emcraft-sf2 SmartFusion2 SOM kit from Emcraft (M2S010) highbank Calxeda Highbank (ECX-1000) imx25-pdk ARM i.MX25 PDK board (ARM926) integratorcp ARM Integrator/CP (ARM926EJ-S) kzm ARM KZM Emulation Baseboard (ARM1136) lm3s6965evb Stellaris LM3S6965EVB lm3s811evb Stellaris LM3S811EVB mainstone Mainstone II (PXA27x) mcimx7d-sabre Freescale i.MX7 DUAL SABRE (Cortex A7) midway Calxeda Midway (ECX-2000) mps2-an385 ARM MPS2 with AN385 FPGA image for Cortex-M3 mps2-an505 ARM MPS2 with AN505 FPGA image for Cortex-M33 mps2-an511 ARM MPS2 with AN511 DesignStart FPGA image for Cortex-M3 musicpal Marvell 88w8618 / MusicPal (ARM926EJ-S) n800 Nokia N800 tablet aka. RX-34 (OMAP2420) n810 Nokia N810 tablet aka. RX-44 (OMAP2420) netduino2 Netduino 2 Machine none empty machine nuri Samsung NURI board (Exynos4210) palmetto-bmc OpenPOWER Palmetto BMC (ARM926EJ-S) raspi2 Raspberry Pi 2 realview-eb ARM RealView Emulation Baseboard (ARM926EJ-S) realview-eb-mpcore ARM RealView Emulation Baseboard (ARM11MPCore) realview-pb-a8 ARM RealView Platform Baseboard for Cortex-A8 realview-pbx-a9 ARM RealView Platform Baseboard Explore for Cortex-A9 romulus-bmc OpenPOWER Romulus BMC (ARM1176) sabrelite Freescale i.MX6 Quad SABRE Lite Board (Cortex A9) smdkc210 Samsung SMDKC210 board (Exynos4210) spitz Sharp SL-C3000 (Spitz) PDA (PXA270) sx1 Siemens SX1 (OMAP310) V2 sx1-v1 Siemens SX1 (OMAP310) V1 terrier Sharp SL-C3200 (Terrier) PDA (PXA270) tosa Sharp SL-6000 (Tosa) PDA (PXA255) verdex Gumstix Verdex (PXA270) versatileab ARM Versatile/AB (ARM926EJ-S) versatilepb ARM Versatile/PB (ARM926EJ-S) vexpress-a15 ARM Versatile Express for Cortex-A15 vexpress-a9 ARM Versatile Express for Cortex-A9 virt-2.10 QEMU 2.10 ARM Virtual Machine virt-2.11 QEMU 2.11 ARM Virtual Machine virt QEMU 2.12 ARM Virtual Machine (alias of virt-2.12) virt-2.12 QEMU 2.12 ARM Virtual Machine virt-2.6 QEMU 2.6 ARM Virtual Machine virt-2.7 QEMU 2.7 ARM Virtual Machine virt-2.8 QEMU 2.8 ARM Virtual Machine virt-2.9 QEMU 2.9 ARM Virtual Machine xilinx-zynq-a9 Xilinx Zynq Platform Baseboard for Cortex-A9 z2 Zipit Z2 (PXA27x) Available CPUs: arm1026 arm1136 arm1136-r2 arm1176 arm11mpcore arm926 arm946 cortex-a15 cortex-a7 cortex-a8 cortex-a9 cortex-m3 cortex-m33 cortex-m4 cortex-r5 max pxa250 pxa255 pxa260 pxa261 pxa262 pxa270-a0 pxa270-a1 pxa270 pxa270-b0 pxa270-b1 pxa270-c0 pxa270-c5 sa1100 sa1110 ti925t