mipigeth + remove junk

.github/workflows/test_embedded.yml

@@ -21,5 +21,5 @@ jobs:
         minigeth/go-ethereum 13284491
     - name: Test in the embedded world
       run: |
-        cd risc
+        cd mipigeth
         ./build.sh && ./run.py 

README.md

@@ -11,6 +11,14 @@ It's half geth, half of what I think truebit was supposed to be. When it's done,
 * ...emulating a MIPS machine
 * ...running an EVM
 
+## Directory Layout
+
+```
+minigeth -- A standalone "geth" capable of computing a block transition
+mipigeth -- This geth compiled for MIPS. Outputs a binary that's run and mapped at 0x0
+mipsevm -- A MIPS runtime in the EVM (see also contracts/)
+```
+
 ## Steps
 
 1. Get minigeth to verify a block locally paying attention to oracle (done)

mipigeth/README

+Compiler and emulator for minigeth in MIPS
+
+Similar to mipsevm, but faster. Will likely be removed if mipsevm is fast enough.
+
+Parts will remain to build and patch the binary

mipigeth/build.sh

+#!/bin/bash -e
+cd ../minigeth
+export GOOS=linux
+export GOARCH=mips
+export GOMIPS=softfloat
+go build
+cd ../mipigeth
+
+cp ../minigeth/go-ethereum go-ethereum
+file go-ethereum

mipigeth/startup.sh

+#!/bin/bash -e
+../mipsevm/maketests.py startup.s startup.bin

risc/README

-Compiler and emulator for minigeth in MIPS
-
-Similar to mipsevm, but faster. Will likely be removed if mipsevm is fast enough.
-
-Parts will remain to build and patch the binary
-
-== Building newlib? ==
-~/fun/mips/mips-gcc-4.8.1/bin/mips-elf-gcc 
-
-wget ftp://sourceware.org/pub/newlib/newlib-4.1.0.tar.gz
-
-CC_FOR_TARGET="/usr/local/opt/llvm/bin/clang -ffreestanding" ../newlib-4.1.0/configure CFLAGS_FOR_TARGET="-target mips-elf" --prefix=$PWD/../sysroot/ --enable-static --target mips-elf
-PATH=/Users/kafka/fun/mips/mips-gcc-4.8.1/bin:$PATH make -j8
-
-== Building glibc? ==
-CXX=/usr/local/opt/llvm/bin/clang++ CC=/usr/local/opt/llvm/bin/clang ../glibc-2.34/configure --build mips-linux-gnu
-
-== Building musl? ==
-RANLIB="/usr/local/opt/llvm/bin/llvm-ranlib" AR="/usr/local/opt/llvm/bin/llvm-ar" CC="/usr/local/opt/llvm/bin/clang" CFLAGS="-target mips-elf -msoft-float" ../musl-1.2.2/configure --host mips-elf --prefix=$PWD/../sysroot/ --disable-shared
-make -j8
-make install
-
-#works with mods
-/usr/local/opt/llvm/bin/llvm-objdump -T ./go-ethereum 

risc/build.sh

-#!/bin/bash -e
-cd ../minigeth
-export GOOS=linux
-export GOARCH=mips
-export GOMIPS=softfloat
-
-# brew install llvm
-# ...and struggle to build musl
-# for 0 gain
-#export CGO_ENABLED=1
-#export CC="$PWD/../risc/clangwrap.sh"
-#go build -v -ldflags "-linkmode external -extldflags -static"
-
-go build
-cp go-ethereum ../risc/go-ethereum
-cd ../risc
-file go-ethereum
-
-# optional (doesn't work because of replacements)
-#/usr/local/opt/llvm/bin/llvm-strip go-ethereum 
-#file go-ethereum
-
-#GOOS=linux GOARCH=mips go build test.go

risc/clangwrap.sh

-#!/bin/bash
-export PATH="/usr/local/opt/llvm/bin"
-for arg do
-  shift
-  [ "$arg" == "-g" ] && continue
-  #[ "$arg" == "-lpthread" ] && set -- "$@" "/Users/kafka/fun/mips/build/sysroot/lib/crt1.o"
-  #[ "$arg" == "-lpthread" ] && continue
-  [ "$arg" == "-Werror" ] && continue
-  [ "$arg" == "-fno-caret-diagnostics" ] && continue
-  #[ "$arg" == "-msoft-float" ] && continue
-  set -- "$@" "$arg"
-done
-echo "ARGS" $@ 1>&2
-exec clang -g0 -lc -target mips-linux-gnu --sysroot /Users/kafka/fun/mips/build/sysroot -fuse-ld=lld -Wno-error -nostdlib /Users/kafka/fun/mips/build/sysroot/lib/crt1.o "$@"

risc/startup.sh

-#!/bin/bash -e
-../mipsevm/maketests.py ../risc/startup.s ../risc/startup.bin

risc/test.go

-package main
-
-import "fmt"
-
-func main() {
-	fmt.Println("hello world")
-}