The code is uploading right now.
I hope I did everything right. Here are some details about the
uploaded code.
The code implements MIPS assembly generation, simulator and
disassembler.
Not all instructions supported in the simulator have been tested
thoroughly yet.
The files containing the code concerned are:
- constants-mips.h / .cc holds the assembly constants and some
helpers. They are shared by the assembler, the simulator, and the
disassembler.
- assembler-mips.h / .cc holds the assembler code.
- macro-assembler-mips.h / .cc is partly implemented: pseudo
instructions, etc.
- simulator-mips.h / .cc for the simulator
- disasm-mips.cc for the disassembler
The architecture dependent files are modified to support the mips
architecture.
In bootstrapper.cc I added some pre-processor condition around the
configuration of the environment. MIPS needs this to skip compiling
natives and others (for this code).
In the SConstruct file there are two architectures defined for mips:
"mips" and "mips-simu".
This is because when compiling for the hardware we need some flags we
don't want when compiling for the simulator. So when compiling for the
simulator we take the arguments in the "mips-simu" architecture
instead.
Also an interface for testing all this is implemented with
- test-mips.h / .cc in which, a test stub is declared, and where
we can write some assembly code.
- test-interface-mips.h / .cc makes the interface between the user
and test-mips files.
To run the interface compile v8 ( scons simulator=mips mode=debug -
j4 )
then compile the test interface. I use the following
"compile_mips_test.sh" script to do all this:
#!/bin/sh
INTERFACE=test-interface-mips.cc
TESTCORE=test-mips.cc
TESTCORE_O=$PWD/obj/debug/mips/test-mips.o
PATH_TO_TEST=$PWD/src/mips
ARGS="-Wall -Werror"
V8ARGS="-Iinclude libv8_g.a -lpthread"
echo "g++ ${PATH_TO_TEST}/${INTERFACE} -o mips-test-interface $
{TESTCORE_O} ${V8ARGS} ${ARGS}"
g++ ${PATH_TO_TEST}/${INTERFACE} -o mips-test-interface ${TESTCORE_O} $
{V8ARGS} ${ARGS}
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