[oe-commits] [openembedded-core] 02/05: runqemu: try and guess qemu-system binary when MACHINE isn't set

[git at git.openembedded.org]

rpurdie pushed a commit to branch master
in repository openembedded-core.

commit a5adabe1414061d6864c5913dd5e66a4527838f1
Author: Joshua Lock <joshua.g.lock at intel.com>
AuthorDate: Wed Sep 21 20:35:37 2016 +0100

    runqemu: try and guess qemu-system binary when MACHINE isn't set
    
    Emulate some logic from the prior, shell based, version of runqemu
    to try and infer the correct setting for MACHINE from the kernel
    and rootfs filenames.
    
    Signed-off-by: Joshua Lock <joshua.g.lock at intel.com>
    Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
 scripts/runqemu | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/scripts/runqemu b/scripts/runqemu
index 5170d87..591746f 100755
--- a/scripts/runqemu
+++ b/scripts/runqemu
@@ -846,9 +846,45 @@ class BaseConfig(object):
 
         self.set('ROOTFS_OPTIONS', self.rootfs_options)
 
+    def guess_qb_system(self):
+        """attempt to determine the appropriate qemu-system binary"""
+        mach = self.get('MACHINE')
+        if not mach:
+            search = '.*(qemux86-64|qemux86|qemuarm64|qemuarm|qemumips64|qemumips|qemuppc).*'
+            if self.rootfs:
+                match = re.match(search, self.rootfs)
+                if match:
+                    mach = match.group(1)
+            elif self.kernel:
+                match = re.match(search, self.kernel)
+                if match:
+                    mach = match.group(1)
+
+        if not mach:
+            return None
+
+        if mach == 'qemuarm':
+            qbsys = 'arm'
+        elif mach == 'qemuarm64':
+            qbsys = 'aarch64'
+        elif mach == 'qemux86':
+            qbsys = 'i386'
+        elif mach == 'qemux86-64':
+            qbsys = 'x86_64'
+        elif mach == 'qemuppc':
+            qbsys = 'ppc'
+        elif mach == 'qemumips':
+            qbsys = 'mips'
+        elif mach == 'qemumips64':
+            qbsys = 'mips64'
+
+        return 'qemu-system-%s' % qbsys
+
     def setup_final(self):
         qemu_system = self.get('QB_SYSTEM_NAME')
         if not qemu_system:
+            qemu_system = self.guess_qb_system()
+        if not qemu_system:
             raise Exception("Failed to boot, QB_SYSTEM_NAME is NULL!")
 
         qemu_bin = '%s/%s' % (self.get('STAGING_BINDIR_NATIVE'), qemu_system)

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