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qemu_x86: use icount for 32-bit

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Options summary:

 -icount shift=5: Execute one instruction every 32ns of virtual time
 -icount align=off: Do not synchronise the host and guest clocks
 -icount sleep=off: Advance virtual time without sleeping/waiting
 -rtc clock=vm: Isolate the guest RTC time from the host

64-bit still has some issues that are being looked at.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This commit is contained in:
Andrew Boie 2020-05-01 11:59:01 -07:00 • committed by Anas Nashif
commit 9b055ecf82
1 changed files with 2 additions and 0 deletions
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2
boards/x86/qemu_x86/board.cmake
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@ -11,6 +11,7 @@ if(CONFIG_X86_64)
set(QEMU_CPU_TYPE_${ARCH} qemu64,+x2apic)
else()
set(QEMU_CPU_TYPE_${ARCH} qemu32,+nx,+pae)
set(ICOUNT_ARG -icount shift=5,align=off,sleep=off -rtc clock=vm)
endif()
set(QEMU_FLAGS_${ARCH}
@ -19,6 +20,7 @@ set(QEMU_FLAGS_${ARCH}
-device isa-debug-exit,iobase=0xf4,iosize=0x04
${REBOOT_FLAG}
-nographic
${ICOUNT_ARG}
)
# TODO: Support debug