Return-Path: MIME-Version: 1.0 From: John Carter Date: Wed, 13 May 2015 15:50:29 +1200 Message-ID: Subject: Arm compilation error in tools/test-runner.c error: impossible constraint in 'asm' To: linux-bluetooth@vger.kernel.org Cc: marcel@holtmann.org Content-Type: text/plain; charset=UTF-8 List-ID: Building bluez out of git within OpenEmbedded for ARM results in the following compilation "error impossible constraint in 'asm'" arm-poky-linux-gnueabi-gcc -march=armv7-a -marm -mthumb-interwork -mfloat-abi=hard -mfpu=neon -mtune=cortex-a8 --sysroot=/home/johnc/tt/ViciaHeinox/build/tmp/sysroots/trex -DHAVE_CONFIG_H -I. -I./lib -I/home/johnc/tt/ViciaHeinox/build/tmp/sysroots/trex/usr/include/dbus-1.0 -I/home/johnc/tt/ViciaHeinox/build/tmp/sysroots/trex/usr/lib/dbus-1.0/include -I/home/johnc/tt/ViciaHeinox/build/tmp/sysroots/trex/usr/include/glib-2.0 -I/home/johnc/tt/ViciaHeinox/build/tmp/sysroots/trex/usr/lib/glib-2.0/include -O2 -pipe -g -feliminate-unused-debug-types -c -o tools/test-runner.o tools/test-runner.c | tools/test-runner.c: In function 'start_qemu': | tools/test-runner.c:224:2: error: impossible constraint in 'asm' | __asm__ __volatile__("cpuid" : "=c" (ecx) : "a" (1) : "memory"); | ^ I believe this was introduced with this commit.... commit a0a03828fbc49db9f0926cee87d53d627d69bac2 Author: Marcel Holtmann Date: Mon Apr 6 20:45:39 2015 -0700 tools: Add fallback if KVM support is not available diff --git a/tools/test-runner.c b/tools/test-runner.c index 407a985..163b610 100644 --- a/tools/test-runner.c +++ b/tools/test-runner.c @@ -195,7 +195,7 @@ static char *const qemu_argv[] = { "-no-user-config", "-monitor", "none", "-display", "none", - "-machine", "type=q35,accel=kvm", + "-machine", "type=q35,accel=kvm:tcg", "-m", "192M", "-nographic", "-vga", "none", @@ -215,6 +215,16 @@ static char *const qemu_envp[] = { NULL }; +static void check_virtualization(void) +{ + uint32_t ecx; + + __asm__ __volatile__("cpuid" : "=c" (ecx) : "a" (1) : "memory"); + + if (!!(ecx & (1 << 5))) + printf("Found support for Virtual Machine eXtensions\n"); +} + -- John Carter Phone : (64)(3) 358 6639 Tait Electronics PO Box 1645 Christchurch New Zealand -- ------------------------------ This email, including any attachments, is only for the intended recipient. It is subject to copyright, is confidential and may be the subject of legal or other privilege, none of which is waived or lost by reason of this transmission. If you are not an intended recipient, you may not use, disseminate, distribute or reproduce such email, any attachments, or any part thereof. If you have received a message in error, please notify the sender immediately and erase all copies of the message and any attachments. Unfortunately, we cannot warrant that the email has not been altered or corrupted during transmission nor can we guarantee that any email or any attachments are free from computer viruses or other conditions which may damage or interfere with recipient data, hardware or software. The recipient relies upon its own procedures and assumes all risk of use and of opening any attachments. ------------------------------