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gdb: wishbone-tool default port is 1234

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wishbone-tool server defaults to 1234:
https://github.com/litex-hub/wishbone-utils/blob/master/wishbone-tool/src/main.rs#L232
```
pdp7@x1:~/dev/fpga/fomu-workshop/riscv-blink$ wishbone-tool -s gdb
INFO [wishbone_tool::bridge::usb] opened USB device device 044 on bus 001
INFO [wishbone_tool::server] accepting connections on 127.0.0.1:1234
```
```
pdp7@x1:~/dev/fpga/fomu-workshop/riscv-blink$ which wishbone-tool
/home/pdp7/dev/fpga/ecp5-toolchain/ecp5-toolchain-linux_x86_64-v1.6.9/bin//wishbone-tool
pdp7@x1:~/dev/fpga/fomu-workshop/riscv-blink$ wishbone-tool --help
Wishbone Tool 0.4.7
Sean Cross <sean@xobs.io>
```
This commit is contained in:
Drew Fustini 2020-03-02 16:57:59 +01:00 committed by GitHub
parent fda6bed5ca
commit de0cebb9ed
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docs/riscv.rst
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@ -201,14 +201,14 @@ To start with, run ``wishbone-tool -s gdb``:
$ wishbone-tool -s gdb
INFO [wishbone_tool::usb_bridge] opened USB device device 008 on bus 001
INFO [wishbone_tool::server] accepting connections on 127.0.0.1:3333
INFO [wishbone_tool::server] accepting connections on 127.0.0.1:1234
$
In a second window, run gdb on ``riscv-blink.elf``:
.. session:: shell-session
$ riscv64-unknown-elf-gdb riscv-blink.elf -ex 'target remote localhost:3333'
$ riscv64-unknown-elf-gdb riscv-blink.elf -ex 'target remote localhost:1234'
GNU gdb (GDB) 8.2.90.20190228-git
Copyright (C) 2019 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>