[MIPS] Toolchain scripts for MIPS architecture.

tools/trusted_cross_toolchains/qemu_tool_mips32.sh

 #!/bin/bash
 #
-# Copyright (c) 2012 The Native Client Authors.  All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
+# Copyright 2012 The Native Client Authors.  All rights reserved.
+# Use of this source code is governed by a BSD-style license that can
+# be found in the LICENSE file.
 
 set -o nounset
 set -o errexit
 
-#@ Various commands to emulate arm code using qemu
+#@ Various commands to emulate mips32 code using qemu
 #@
 #@ Note: this script is not meant to be run as
-#@     tools/trusted_cross_toolchains/qemu_tool_arm.sh
+#@     tools/llvm/qemu_tool.sh
 #@ but rather as:
-#@     toolchain/linux_arm-trusted/qemu_tool_arm.sh
+#@     toolchain/linux_mips-trusted/qemu-mips32
 
-# From a qemu build based on qemu-0.10.1.tar.gz
+# From a qemu build based on qemu-0.12.5.tar.gz
 readonly SDK_ROOT=$(dirname $0)
-readonly QEMU=${SDK_ROOT}/qemu-arm
-readonly QEMU_STOCK=/usr/bin/qemu-arm
-readonly QEMU_JAIL=${SDK_ROOT}
+readonly QEMU=${SDK_ROOT}/qemu-mips32
+readonly QEMU_JAIL=${SDK_ROOT}/mips-release/mips-linux-gnu/libc/el
 # NOTE: some useful debugging options for qemu:
 #       env vars:
 #                  QEMU_STRACE=1
 #       args:
 #                  -strace
 #                  -d out_asm,in_asm,op,int,exec,cpu
 #       c.f.  cpu_log_items in qemu-XXX/exec.c
-readonly QEMU_ARGS="-cpu cortex-a8"
+readonly QEMU_ARGS=""
 readonly QEMU_ARGS_DEBUG="-d in_asm,int,exec,cpu"
 readonly QEMU_ARGS_DEBUG_SR="-d in_asm,int,exec,cpu,service_runtime"
 
 ######################################################################
 # Helpers
 ######################################################################
 
 Banner() {
   echo "######################################################################"
   echo $*
@@ skipping 26 matching lines @@
 #@ help
 #@
 #@   print help for all modes
 help () {
   Usage
 }
 
 #@
 #@ run
 #@
-#@   run emulation using a locally patched qemu
+#@   run stuff
 run() {
   CheckPrerequisites
   exec ${QEMU} -L ${QEMU_JAIL} ${QEMU_ARGS} "$@"
 }
 
 #@
-#@ run_stock
-#@
-#@   run emulation using the stock qemu
-run_stock() {
-  exec ${QEMU_STOCK} -L ${QEMU_JAIL} ${QEMU_ARGS} "$@"
-}
-
-#@
 #@ run_debug
 #@
-#@   run emulation but also generate trace in /tmp
+#@   run stuff but also generate trace in /tmp
 run_debug() {
   Hints
   CheckPrerequisites
   exec ${QEMU} -L ${QEMU_JAIL} ${QEMU_ARGS} ${QEMU_ARGS_DEBUG} "$@"
 }
 
 #@
 #@ run_debug_service_runtime
 #@
-#@   run emulation but also generate trace in /tmp even for service_runtime
+#@   run stuff but also generate trace in /tmp even for service_runtime
 run_debug_service_runtime() {
   Hints
   CheckPrerequisites
   exec ${QEMU} -L ${QEMU_JAIL} ${QEMU_ARGS} ${QEMU_ARGS_DEBUG_SR} "$@"
 }
 
-#@
-#@ install_stock
-#@
-#@   install stock qemu emulator (for user mode)
-install_stock_qemu() {
-    sudo apt-get install qemu-user
-}
-
 ######################################################################
-if [[ "$0" == *run_under_qemu_arm ]] ; then
+if [[ "$0" == *run_under_qemu_mips32 ]] ; then
   run "$@"
 elif [[ $# -eq 0 ]] ; then
   echo "you must specify a mode on the commandline:"
   echo
   Usage
   exit -1
 elif [[ "$(type -t $1)" != "function" ]]; then
   echo "ERROR: unknown function '$1'." >&2
   echo "For help, try:"
   echo "    $0 help"
   exit 1
 else
   "$@"
 fi