Statetrace: Accomodate cross compiling statetrace with scons.

--HG--
rename : util/statetrace/arch/tracechild_amd64.cc => util/statetrace/arch/amd64/tracechild.cc
rename : util/statetrace/arch/tracechild_amd64.hh => util/statetrace/arch/amd64/tracechild.hh
rename : util/statetrace/arch/tracechild_arm.cc => util/statetrace/arch/arm/tracechild.cc
rename : util/statetrace/arch/tracechild_arm.hh => util/statetrace/arch/arm/tracechild.hh
rename : util/statetrace/arch/tracechild_i386.cc => util/statetrace/arch/i386/tracechild.cc
rename : util/statetrace/arch/tracechild_i386.hh => util/statetrace/arch/i386/tracechild.hh
rename : util/statetrace/arch/tracechild_sparc.cc => util/statetrace/arch/sparc/tracechild.cc
rename : util/statetrace/arch/tracechild_sparc.hh => util/statetrace/arch/sparc/tracechild.hh
rename : util/statetrace/tracechild_arch.cc => util/statetrace/base/arch_check.h
rename : util/statetrace/regstate.hh => util/statetrace/base/regstate.hh
rename : util/statetrace/statetrace.cc => util/statetrace/base/statetrace.cc
rename : util/statetrace/tracechild.cc => util/statetrace/base/tracechild.cc
rename : util/statetrace/tracechild.hh => util/statetrace/base/tracechild.hh

util/statetrace/SConscript

@@ -0,0 +1,39 @@
+# Copyright (c) 2011 Gabe Black
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Authors: Gabe Black
+
+import os
+
+Import('env', 'arch')
+
+env.Append(CPPPATH=Dir('.'))
+
+sources = [os.path.join('base', 'statetrace.cc'),
+           os.path.join('base', 'tracechild.cc'),
+           os.path.join('arch', arch, 'tracechild.cc')]
+objects = [env.Object(source) for source in sources]
+env.Program('statetrace', objects)

util/statetrace/SConstruct

@@ -26,7 +26,42 @@
 #
 # Authors: Gabe Black
 
-sources = ['statetrace.cc', 'tracechild.cc', 'tracechild_arch.cc']
-cxx_flags = "-O3 -ggdb -I ./ -I ./arch"
-objects = [Object(source, CXXFLAGS=cxx_flags) for source in sources]
-Program('statetrace', objects)
+Help('''
+To build a version of statetrace suitable to run on a particular ISA, use a
+target of the form build/<arch>/statetrace. For example, to build statetrace
+for ARM binaries, run:
+
+scons build/arm/statetrace
+
+You may need a cross compiler in order to build statetrace successfully. To
+specify an alternative compiler, set the CXX scons argument on the command
+line. The CXX environment variable is NOT considered when selecting the 
+compiler. To override the compiler for a particular target ISA, set the
+<arch>CXX scons argument. For example, to build both the AMD64 version and
+the ARM version at the same time using the system compiler for the AMD64
+version and a cross compiler for arm, your command line would look like the
+following:
+
+scons ARMCXX=arm-cross-g++ build/amd64/statetrace build/arm/statetrace
+
+After a successful build, the statetrace binary(binaries) will be located in
+the build/<arch>/ directories you specified on the command line.
+''')
+
+
+arches = 'amd64', 'arm', 'i386', 'sparc'
+
+import os
+
+main = Environment()
+main.SetOption('duplicate', 'soft-copy')
+main['CXXFLAGS'] = "-O3 -ggdb $_CPPINCFLAGS"
+
+main['CXX'] = ARGUMENTS.get('CXX', main['CXX'])
+
+for arch in arches:
+    env = main.Clone()
+    env['CXX'] = ARGUMENTS.get(arch.upper() + 'CXX', env['CXX'])
+    env.Append(CPPFLAGS = '-D__STATETRACE_%s__' % arch.upper())
+    Export('env', 'arch')
+    env.SConscript('SConscript', variant_dir = os.path.join('build', arch))

util/statetrace/arch/amd64/tracechild.cc

@@ -35,7 +35,7 @@
 #include <stdint.h>
 #include <string.h>
 
-#include "tracechild_amd64.hh"
+#include "arch/amd64/tracechild.hh"
 
 using namespace std;
 

util/statetrace/arch/amd64/tracechild.hh

@@ -37,7 +37,7 @@
 #include <cassert>
 #include <string>
 
-#include "tracechild.hh"
+#include "base/tracechild.hh"
 
 class AMD64TraceChild : public TraceChild
 {

util/statetrace/arch/arm/tracechild.cc

@@ -47,7 +47,7 @@
 #include <cstring>
 #include <cstdio>
 
-#include "tracechild_arm.hh"
+#include "arch/arm/tracechild.hh"
 
 using namespace std;
 

util/statetrace/arch/arm/tracechild.hh

@@ -48,7 +48,7 @@
 #include <string>
 #include <sys/user.h>
 #include <sys/ptrace.h>
-#include "tracechild.hh"
+#include "base/tracechild.hh"
 
 
 class ARMTraceChild : public TraceChild

util/statetrace/arch/i386/tracechild.cc

@@ -33,7 +33,7 @@
 #include <sys/ptrace.h>
 #include <stdint.h>
 
-#include "tracechild_i386.hh"
+#include "arch/i386/tracechild.hh"
 
 using namespace std;
 

util/statetrace/arch/i386/tracechild.hh

@@ -37,7 +37,7 @@
 #include <cassert>
 #include <string>
 
-#include "tracechild.hh"
+#include "base/tracechild.hh"
 
 class I386TraceChild : public TraceChild
 {

util/statetrace/arch/sparc/tracechild.cc

@@ -33,7 +33,7 @@
 #include <sys/ptrace.h>
 #include <stdint.h>
 
-#include "tracechild_sparc.hh"
+#include "arch/sparc/tracechild.hh"
 
 using namespace std;
 

util/statetrace/arch/sparc/tracechild.hh

@@ -39,7 +39,7 @@
 #include <sys/ptrace.h>
 #include <sys/types.h>
 
-#include "tracechild.hh"
+#include "base/tracechild.hh"
 
 struct regs;
 

util/statetrace/base/arch_check.h

@@ -28,29 +28,51 @@
  * Authors: Gabe Black
  */
 
-#if defined __alpha__
-    #error "Alpha architecture not implemented"
-#elif defined __amd64__
-    #include "arch/tracechild_amd64.cc"
-#elif defined __arm__
-    #include "arch/tracechild_arm.cc"
-#elif defined __hppa__
-    #error "Hppa architecture not implemented"
-#elif defined __i386__ || defined __i486__ || \
-                defined __i586__ || defined __i686
-    #include "arch/tracechild_i386.cc"
-#elif defined __ia64__
-    #error "IA64 architecture not implemented"
-#elif defined __mips__
-    #error "Mips architecture not implemented"
-#elif defined __powerpc__
-    #error "PowerPC architecture not implemented"
-#elif defined __sparc__
-    #include "arch/tracechild_sparc.cc"
-#elif defined __sh__
-    #include "SuperH architecture not implemented"
-#elif defined __s390__
-    #include "System/390 architecture not implemented"
+#if defined __STATETRACE_ALPHA__
+    #if !defined __alpha__
+        #error "Alpha toolchain required."
+    #endif
+#elif defined __STATETRACE_AMD64__
+    #if !defined __amd64__
+        #error "Amd64 toolchain required."
+    #endif
+#elif defined __STATETRACE_ARM__
+    #if !defined __arm__
+        #error "Arm toolchain required."
+    #endif
+#elif defined __STATETRACE_HPPA__
+    #if !defined __hppa__
+        #error "Hppa toolchain required."
+    #endif
+#elif defined __STATETRACE_I386__
+    #if !(defined __i386__ || defined __i486__ || \
+            defined __i586__ || defined __i686)
+        #error "I386 toolchain required."
+    #endif
+#elif defined __STATETRACE_IA64__
+    #if !defined __ia64__
+        #error "IA64 toolchain required."
+    #endif
+#elif defined __STATETRACE_MIPS__
+    #if !defined __mips__
+        #error "Mips toolchain required."
+    #endif
+#elif defined __STATETRACE_POWERPC__
+    #if !defined __powerpc__
+        #error "PowerPC toolchain required."
+    #endif
+#elif defined __STATETRACE_SPARC__
+    #if !defined __sparc__
+        #error "Sparc toolchain required."
+    #endif
+#elif defined __STATETRACE_SH__
+    #if !defined __sh__
+        #error "SuperH toolchain required."
+    #endif
+#elif defined __STATETRACE__S390__
+    #if !defined __s390__
+        #error "System/390 toolchain required."
+    #endif
 #else
-    #error "Couldn't determine architecture"
+    #error "Couldn't determine architecture."
 #endif

util/statetrace/base/statetrace.cc

@@ -28,6 +28,8 @@
  * Authors: Gabe Black
  */
 
+#include "base/arch_check.h"
+
 #include <cstring>
 #include <errno.h>
 #include <fstream>

util/statetrace/base/tracechild.hh

@@ -31,7 +31,7 @@
 #ifndef TRACECHILD_HH
 #define TRACECHILD_HH
 
-#include "regstate.hh"
+#include "base/regstate.hh"
 
 class TraceChild : public RegState
 {