As you can see, a file named F429ZI_Blinky.elf is produced under folder Debug or Release, depending on what kind of target/configuration you specified to build.
Step 2: Run Project with QEMU
Finally, we need to run the project by emulating STM32F429I-Discovery with chip STM32F429ZI via QEMU. Right click on the built file HelloWorld.elf -> Run As -> Run Configurations -> GDB QEMU Debugging -> New. We creat a new configuration named F429ZI_Blinky QEMU, and make the Run Configurations as in the following two images:
Run Configurations QEMU - Main Tab
Run Configurations QEMU - Debugger Tab
And the project Blinky successfully run with the following output:
GNU ARM Eclipse 64-bits QEMU v2.8.0 (qemu-system-gnuarmeclipse).
Board: 'STM32F429I-Discovery' (ST Discovery kit for STM32F429/439 lines).