Merge 377a741007 into b82db9af8d

arm.py

@@ -0,0 +1,138 @@
+#!/usr/bin/env python3
+
+import re
+import os
+
+generic = {
+    '7' : 'arm7',
+    '8' : 'arm8',
+    '9' : 'arm9tdmi',
+    'a' : 'arm10e',
+    'b' : 'mpcore'
+    }
+
+specific = {
+    '810' : 'arm810',
+    '8xx' : 'arm8',
+    '920' : 'arm920t',
+    '922' : 'arm922t',
+    '946' : 'arm946e-s',
+    '926' : 'arm926ej-s',
+    '966' : 'arm966e-s',
+    '968' : 'arm968e-s',
+    '940' : 'arm940e',
+    '9xx' : 'arm9tdmi',
+    'a20' : 'arm1020e',
+    'a22' : 'arm1022e',
+    'a26' : 'arm1026ej-s',
+    'axx' : 'arm10e',
+    'b36' : 'arm1136j-s',
+    'b56' : 'arm1156t2-s',
+    'b76' : 'arm1176jz-s',
+    'bxx' : 'mpcore',
+    'c05' : 'cortex-a5',
+    'c07' : 'cortex-a7',
+    'c08' : 'cortex-a8',
+    'c09' : 'cortex-a9',
+    'c0d' : 'cortex-a12',
+    'c0f' : 'cortex-a15',
+    'c0e' : 'cortex-a17',
+    'd01' : 'cortex-a32',
+    'd04' : 'cortex-a35',
+    'd03' : 'cortex-a53',
+    'd05' : 'cortex-a55',
+    'd07' : 'cortex-a57',
+    'd08' : 'cortex-a72',
+    'd09' : 'cortex-a73',
+    'd0a' : 'cortex-a75',
+    'c14' : 'cortex-r4',
+    'c15' : 'cortex-r5',
+    'c17' : 'cortex-r7',
+    'c18' : 'cortex-r8',
+    'd21' : 'cortex-m33',
+    'd20' : 'cortex-m23',
+    'c20' : 'cortex-m7',
+    'c24' : 'cortex-m4',
+    'c23' : 'cortex-m3',
+    'c21' : 'cortex-m1',
+    'c20' : 'cortex-m0',
+    'c60' : 'cortex-m0plus'
+}
+
+
+class CPUInfo(object):
+
+    ARM='arm'
+    Intel='x86'
+    Generic='generic'
+
+
+    def __init__(self):
+        self.architecture=os.uname().machine
+        if re.match('arm',self.architecture): self.chip=CPUInfo.ARM
+        elif re.match('x86',self.architecture): self.chip=CPUInfo.Intel
+        else : self.chip=CPUInfo.Generic
+        
+        with open('/proc/cpuinfo','r') as proc:
+            lines=[l for l in proc]
+
+        self.lines=[re.sub('\s+',' ',l) for l in lines]
+        f=[re.match('(?:Features|flags) . ([\w ]+)$',l) for l in self.lines]
+        f=[m.groups(0)[0] for m in f if m is not None]
+        self.features=set()
+        for line in f : self.features.update(line.strip().split(' '))
+
+        if self.chip==CPUInfo.ARM:
+            c=[re.match('CPU part\s:\s+0x([0-9a-f]+)',l) for l in self.lines]
+            self.cpu={m.groups(0)[0] for m in c if m is not None}.pop()
+            self.model=specific.get(self.cpu,generic.get(self.cpu,'generic'))
+        else:
+            self.cpu=None
+            self.model='generic'
+
+
+    def __getitem__(self,key):
+        return key in self.features
+
+    @property
+    def fpuFlags(self):
+        if self.chip==CPUInfo.Intel:
+            if self['sse'] or self['sse2']:
+                return ['-msse','-mfpmath=sse']
+            return []
+        elif self.chip==CPUInfo.ARM:
+            f=[]
+            if self['neon']: f=['-mfpu=neon-fp-armv8','-mneon-for-64bits']
+            elif self['vfpv4']: f=['-mfpu=neon-vfpv4']
+            elif self['vfpv3']: f=['-mfpu=neon-vpfv3']
+            elif self['vfpv3d16']: f=['-mfpu=vfpv3-d16']
+            elif self['vfp'] or self['vfpv2'] or self['vfpd32']: f=['-mfpu=vfp']
+            f.append('-mfloat-abi=hard')
+            return f
+        else:
+            return []        
+
+    @property
+    def modelFlags(self):
+        if self.chip==CPUInfo.ARM:
+            if self.model=='generic': return ['-mtune=generic']
+            else: return ['-mcpu={}'.format(self.model),'-mtune={}'.format(self.model)]
+        else:
+            return ['-mtune=generic']
+        
+    @property
+    def flags(self):
+        f=self.modelFlags
+        f.extend(self.fpuFlags)
+        return f
+
+try:
+    c=CPUInfo()
+    print(' '.join(c.flags))
+except Exception as e:
+    print('Error : {}'.format(e))
+
+                
+        
+
+    

c++/Makefile.mk

@@ -17,15 +17,20 @@ UIC ?= $(HOSTBINS)/uic
 
 # --------------------------------------------------------------
 
+
 DEBUG ?= false
 
+mkfile_path := $(dir $(abspath $(lastword $(MAKEFILE_LIST))))
+CPU_FLAGS = $(shell $(mkfile_path)../arm.py)
+
 ifeq ($(DEBUG),true)
 BASE_FLAGS  = -O0 -g -Wall -Wextra
 BASE_FLAGS += -DDEBUG
 STRIP       = true # FIXME
 else
-BASE_FLAGS  = -O3 -ffast-math -mtune=generic -msse -mfpmath=sse -Wall -Wextra
+BASE_FLAGS  = -O3 -ffast-math -Wall -Wextra
 BASE_FLAGS += -DNDEBUG
+BASE_FLAGS += $(CPU_FLAGS)
 endif
 
 BASE_FLAGS += -fPIC