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| // This file is part of ngaro - https://github.com/db47h/ngaro | ||
| // | ||
| // Copyright 2016 Denis Bernard <db047h@gmail.com> | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| // The retro command line tool is a a showcase for the package github.com/db47h/ngaro/vm | ||
| // and can be used as a high performance replacement for the Retro reference implementations. | ||
| // | ||
| // See aslo http://forthworks.com/retro/ for more information on Retro. | ||
| // | ||
| // Usage: | ||
| // | ||
| // -debug | ||
| // enable debug diagnostics | ||
| // -dump | ||
| // dump stacks and memory image upon exit, for ngarotest.py | ||
| // -ibits value | ||
| // cell size in bits of loaded memory image (default GOARCH bits) | ||
| // -image filename | ||
| // Load memory image from file filename (default "retroImage") | ||
| // -noraw | ||
| // disable raw terminal IO | ||
| // -noshrink | ||
| // When saving, don't shrink memory image file | ||
| // -o filename | ||
| // filename to use when saving memory image | ||
| // -obits value | ||
| // cell size in bits of saved memory image (default GOARCH bits) | ||
| // -size int | ||
| // runtime memory image size in cells (default 100000) | ||
| // -with filename | ||
| // Add filename to the input list (can be specified multiple times) | ||
| // | ||
| // -debug: will print a full stacktrace should the VM crash. | ||
| // | ||
| // -dump: this boolean flag is meant to be used in conjonction with the Retro | ||
| // test suite. It will dunp the stacks and memory image to stdout. | ||
| // | ||
| // -noraw: upon startup, retro switches the terminal to raw mode unless stdin | ||
| // has been redirected. This flag disables this behavior. | ||
| // | ||
| // -image: memory image file to load on startup. The default is a file named | ||
| // "retroImage" in the current directory. | ||
| // | ||
| // -size: total memory image size (in cells) to use at runtime. It may be | ||
| // automatically extended to fit the loaded memory image file. Make sure that | ||
| // this value is sufficiently big to have some free cells as temporary storage. | ||
| // | ||
| // -with: After loading the memory image, retro will feed the specified file to | ||
| // the VM as input. If specified multiple times, files will be fed to the VM in | ||
| // order of appearance on the command line. | ||
| // | ||
| // -o: filename to use when saving the memory image. In Retro, the "save" wword | ||
| // saves the memory image to disk. This can also be done in Ngaro assembler with | ||
| // the following code: | ||
| // | ||
| // .org 32 ( or whatever address above 32 ) | ||
| // :save | ||
| // 1 4 out | ||
| // 0 0 out | ||
| // wait ; | ||
| // save | ||
| // | ||
| // -noshrink: in the Retro language, the number of cells allocated inside the | ||
| // memory image is stored in cell #3. By default, this value is used to save | ||
| // only that many cells. Use this flag if you are running a memory image | ||
| // incompatible with this scheme, or if you want to make a full snapshot of the | ||
| // VM memory, including temp data. | ||
| // | ||
| // -ibits, -obits: control respectively the cell size in bits of the input and | ||
| // output memory images. These flags are primarily meant to convert memory | ||
| // images between different cell sizes. For more details on 32/64 bits handling | ||
| // and examples, please see https://github.com/db47h/ngaro/blob/master/README.md | ||
| package main |
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