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# Generated from CLion C/C++ Code Style settings
BasedOnStyle: LLVM
AccessModifierOffset: -4
AlignAfterOpenBracket: Align
AlignConsecutiveAssignments: Consecutive
AlignConsecutiveMacros: AcrossEmptyLinesAndComments
AlignOperands: Align
AllowAllArgumentsOnNextLine: false
AllowAllConstructorInitializersOnNextLine: false
AllowAllParametersOfDeclarationOnNextLine: false
AllowShortBlocksOnASingleLine: Always
AllowShortCaseLabelsOnASingleLine: false
AllowShortFunctionsOnASingleLine: All
AllowShortIfStatementsOnASingleLine: Always
AllowShortLambdasOnASingleLine: All
AllowShortLoopsOnASingleLine: true
AlwaysBreakAfterReturnType: None
AlwaysBreakTemplateDeclarations: Yes
BreakBeforeBraces: Custom
BraceWrapping:
AfterCaseLabel: false
AfterClass: false
AfterControlStatement: Never
AfterEnum: false
AfterFunction: false
AfterNamespace: false
AfterUnion: false
BeforeCatch: false
BeforeElse: false
IndentBraces: false
SplitEmptyFunction: false
SplitEmptyRecord: true
BreakBeforeBinaryOperators: None
BreakBeforeTernaryOperators: true
BreakConstructorInitializers: BeforeColon
BreakInheritanceList: BeforeColon
ColumnLimit: 0
CompactNamespaces: false
ContinuationIndentWidth: 8
IndentCaseLabels: true
IndentPPDirectives: None
IndentWidth: 4
KeepEmptyLinesAtTheStartOfBlocks: true
MaxEmptyLinesToKeep: 2
NamespaceIndentation: All
ObjCSpaceAfterProperty: false
ObjCSpaceBeforeProtocolList: true
PointerAlignment: Right
ReflowComments: false
SpaceAfterCStyleCast: true
SpaceAfterLogicalNot: false
SpaceAfterTemplateKeyword: false
SpaceBeforeAssignmentOperators: true
SpaceBeforeCpp11BracedList: false
SpaceBeforeCtorInitializerColon: true
SpaceBeforeInheritanceColon: true
SpaceBeforeParens: ControlStatements
SpaceBeforeRangeBasedForLoopColon: true
SpaceInEmptyParentheses: false
SpacesBeforeTrailingComments: 1
SpacesInAngles: false
SpacesInCStyleCastParentheses: false
SpacesInContainerLiterals: false
SpacesInParentheses: false
SpacesInSquareBrackets: false
TabWidth: 4
UseTab: Never

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name: CI-Release
on:
push:
branches:
- main
jobs:
clang-format:
runs-on: ubuntu-22.04
steps:
- uses: actions/checkout@v3
- name: clang-format
run: |
docker run --rm -v ${PWD}:/src wiiuenv/clang-format:13.0.0-2 -r ./src
build-binary:
runs-on: ubuntu-22.04
needs: clang-format
steps:
- uses: actions/checkout@v3
- name: create version.h
run: |
git_hash=$(git rev-parse --short "$GITHUB_SHA")
cat <<EOF > ./src/version.h
#pragma once
#define PLUGIN_VERSION_EXTRA " (nightly-$git_hash)"
EOF
- name: build binary
run: |
docker build . -t builder
docker run --rm -v ${PWD}:/project builder make
- uses: actions/upload-artifact@master
with:
name: binary
path: "*.wps"
deploy-binary:
needs: build-binary
runs-on: ubuntu-22.04
steps:
- name: Get environment variables
id: get_repository_name
run: |
echo REPOSITORY_NAME=$(echo "$GITHUB_REPOSITORY" | awk -F / '{print $2}' | sed -e "s/:refs//") >> $GITHUB_ENV
echo DATETIME=$(echo $(date '+%Y%m%d-%H%M%S')) >> $GITHUB_ENV
- uses: actions/download-artifact@master
with:
name: binary
- name: zip artifact
run: zip -r ${{ env.REPOSITORY_NAME }}_${{ env.DATETIME }}.zip *.wps
- name: Create Release
uses: "softprops/action-gh-release@v1"
with:
tag_name: ${{ env.REPOSITORY_NAME }}-${{ env.DATETIME }}
draft: false
prerelease: true
generate_release_notes: true
name: Nightly-${{ env.REPOSITORY_NAME }}-${{ env.DATETIME }}
files: |
./${{ env.REPOSITORY_NAME }}_${{ env.DATETIME }}.zip

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name: CI-PR
on: [ pull_request ]
jobs:
clang-format:
runs-on: ubuntu-22.04
steps:
- uses: actions/checkout@v3
- name: clang-format
run: |
docker run --rm -v ${PWD}:/src wiiuenv/clang-format:13.0.0-2 -r ./src
build-binary:
runs-on: ubuntu-22.04
needs: clang-format
steps:
- uses: actions/checkout@v3
- name: create version.h
run: |
git_hash=$(git rev-parse --short "${{ github.event.pull_request.head.sha }}")
cat <<EOF > ./src/version.h
#pragma once
#define PLUGIN_VERSION_EXTRA " (nightly-$git_hash)"
EOF
- name: build binary
run: |
docker build . -t builder
docker run --rm -v ${PWD}:/project builder make
- uses: actions/upload-artifact@master
with:
name: binary
path: "*.wps"

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build/*
*.elf
*.wps
.idea/

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FROM wiiuenv/devkitppc:20230218
COPY --from=wiiuenv/wiiupluginsystem:20230215 /artifacts $DEVKITPRO
COPY --from=wiiuenv/libkernel:20220904 /artifacts $DEVKITPRO
COPY --from=wiiuenv/libwupsbackend:20230217 /artifacts $DEVKITPRO
WORKDIR project

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patent license (a) in connection with copies of the covered work
conveyed by you (or copies made from those copies), or (b) primarily
for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.
12. No Surrender of Others' Freedom.
If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all. For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work. The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

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#-------------------------------------------------------------------------------
.SUFFIXES:
#-------------------------------------------------------------------------------
ifeq ($(strip $(DEVKITPRO)),)
$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>/devkitpro")
endif
TOPDIR ?= $(CURDIR)
include $(DEVKITPRO)/wups/share/wups_rules
WUT_ROOT := $(DEVKITPRO)/wut
WUMS_ROOT := $(DEVKITPRO)/wums
#-------------------------------------------------------------------------------
# TARGET is the name of the output
# BUILD is the directory where object files & intermediate files will be placed
# SOURCES is a list of directories containing source code
# DATA is a list of directories containing data files
# INCLUDES is a list of directories containing header files
#-------------------------------------------------------------------------------
TARGET := gdbstub
BUILD := build
SOURCES := src src/utils src/stub
DATA := data
INCLUDES := src
#-------------------------------------------------------------------------------
# options for code generation
#-------------------------------------------------------------------------------
CFLAGS := -Wall -O2 -ffunction-sections \
$(MACHDEP)
CFLAGS += $(INCLUDE) -D__WIIU__ -D__WUT__ -D__WUPS__
CXXFLAGS := $(CFLAGS) -std=c++20
ASFLAGS := -g $(ARCH)
LDFLAGS = -g $(ARCH) $(RPXSPECS) -Wl,-Map,$(notdir $*.map) -T$(WUMS_ROOT)/share/libkernel.ld -T$(WUPS_ROOT)/share/libwupsbackend.ld $(WUPSSPECS)
LIBS := -lwups -lwupsbackend -lwut -lkernel
#-------------------------------------------------------------------------------
# list of directories containing libraries, this must be the top level
# containing include and lib
#-------------------------------------------------------------------------------
LIBDIRS := $(PORTLIBS) $(WUPS_ROOT) $(WUMS_ROOT) $(WUT_ROOT) $(WUT_ROOT)/usr
#-------------------------------------------------------------------------------
# no real need to edit anything past this point unless you need to add additional
# rules for different file extensions
#-------------------------------------------------------------------------------
ifneq ($(BUILD),$(notdir $(CURDIR)))
#-------------------------------------------------------------------------------
export OUTPUT := $(CURDIR)/$(TARGET)
export TOPDIR := $(CURDIR)
export VPATH := $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
$(foreach dir,$(DATA),$(CURDIR)/$(dir))
export DEPSDIR := $(CURDIR)/$(BUILD)
CFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
CPPFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
SFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
BINFILES := $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))
#-------------------------------------------------------------------------------
# use CXX for linking C++ projects, CC for standard C
#-------------------------------------------------------------------------------
ifeq ($(strip $(CPPFILES)),)
#-------------------------------------------------------------------------------
export LD := $(CC)
#-------------------------------------------------------------------------------
else
#-------------------------------------------------------------------------------
export LD := $(CXX)
#-------------------------------------------------------------------------------
endif
#-------------------------------------------------------------------------------
export OFILES_BIN := $(addsuffix .o,$(BINFILES))
export OFILES_SRC := $(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
export OFILES := $(OFILES_BIN) $(OFILES_SRC)
export HFILES_BIN := $(addsuffix .h,$(subst .,_,$(BINFILES)))
export INCLUDE := $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
-I$(CURDIR)/$(BUILD)
export LIBPATHS := $(foreach dir,$(LIBDIRS),-L$(dir)/lib)
.PHONY: $(BUILD) clean all
#-------------------------------------------------------------------------------
all: $(BUILD)
$(BUILD):
@$(shell [ ! -d $(BUILD) ] && mkdir -p $(BUILD))
@$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
#-------------------------------------------------------------------------------
clean:
@echo clean ...
@rm -fr $(BUILD) $(TARGET).wps $(TARGET).elf
#-------------------------------------------------------------------------------
else
.PHONY: all
DEPENDS := $(OFILES:.o=.d)
#-------------------------------------------------------------------------------
# main targets
#-------------------------------------------------------------------------------
all : $(OUTPUT).wps
$(OUTPUT).wps : $(OUTPUT).elf
$(OUTPUT).elf : $(OFILES)
$(OFILES_SRC) : $(HFILES_BIN)
#-------------------------------------------------------------------------------
# you need a rule like this for each extension you use as binary data
#-------------------------------------------------------------------------------
%.bin.o %_bin.h : %.bin
#-------------------------------------------------------------------------------
@echo $(notdir $<)
@$(bin2o)
#---------------------------------------------------------------------------------
%.o: %.s
@echo $(notdir $<)
@$(CC) -MMD -MP -MF $(DEPSDIR)/$*.d -x assembler-with-cpp $(ASFLAGS) -c $< -o $@ $(ERROR_FILTER)
-include $(DEPENDS)
#-------------------------------------------------------------------------------
endif
#-------------------------------------------------------------------------------

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[![CI-Release](https://github.com/wiiu-env/gdbstub_plugin/actions/workflows/ci.yml/badge.svg)](https://github.com/wiiu-env/gdbstub_plugin/actions/workflows/ci.yml)
# GDBStub for the Wii U
This is a plugin which provides a gdbstub for debugging Wii U software, including homebrew.
It's based on the gdbstub that's inside the `coreinit.rpl` and present on any Wii U. This plugin patches several functions to allow usage of the stub on retail consoles.
With these patches some bugs have been fixed (e.g. basic `vCont` support and escape packet contents) and support for multiple queries have been added.
Memory access is now done completely via the KernelModule which bypasses the MMU, which allow us to write/read anywhere.
For research purposes it's planned to reimplement (the important parts of) the `coreinit.rpl` gdbstub step by step.
## Features
- Hardware breakpoint support (maximum one hw breakpoint is supported at once).
- Support up to 512 software breakpoints at the same time.
- Hardware watchpoints for read/write access of data with 8 byte accuracy (maximum one hw watchpoint is supported at once).
- Stepping to the next instruction (only the for currently active threads)
- Memory/register reading/writing.
- Implemented the optional `qXfer:features:read` and `qXfer:threads:read` query.
- Interrupting the execution at any time via `CTRL+C`
- See the `main.h` for further configuration options via macros.
## Requirements / Limitations:
- Using [MochaPayload](https://github.com/wiiu-env/MochaPayload) v0.2 or higher or something else that supports the DK_PChar API. If not using mocha, you probably need to adjust the `makeOpenPath` replacement.
- Any homebrew you want to debug needs to be built with [wut](https://github.com/devkitPro/wut) 1.2.0-2 or higher. Official software works too, but you probably won't have any symbols.
- When the gdbstub is loaded, it'll directly start to wait for a connection via TCP. It's recommended to load the plugin when needed via the network instead of placing it permanently on the sd card. For loading plugins at runtime you can use the [wiiload plugin](https://github.com/wiiu-env/wiiload_plugin).
- The console will **not** respond to any other input while waiting for a connection. Please connect to the stub or force-shutdown the console (hold the power button of the **console** for at least 4 seconds)
- The gdbstub will stay loaded and active until the console is shut down. It's possible to change or reload the application.
## Recommended:
- Using the [USBSerialLogger](https://github.com/wiiu-env/USBSerialLogger) module to have output via serial while debugging. For this you need a USB serial cable with certain chipset. The USBSerialLogger repo for more information.
- Build the homebrew apps with -O0, make sure to add the `-g` compiler flag for creating debug builds with DWARF information.
## Usage
- Boot your console into a [WiiUPluginLoaderBackend](https://github.com/wiiu-env/WiiUPluginLoaderBackend) compatible environment (e.g. [Aroma](https://github.com/wiiu-env/Aroma))
- Start the homebrew app you want to debug.
- Load the gdbstub_plugin via wiiload.
- Now the homebrew app will restart and wait for a connection. (When using the usb serial logging it should print `[+-*WAITING FOR DEBUGGER*-+]`)
- Connect to the gdbstub via TCP at port 3000.
- When you don't load any symbol file, you might have to force the endianness via `set endian big`
Basic settings for gdb:
```
set arch powerpc:750
set remotetimeout 30
set tcp connect-timeout 60
set print thread-events on
set disassemble-next-line on
set remote hardware-watchpoint-limit 1
set remote hardware-breakpoint-limit 1
target remote tcp:192.168.178.123:3000
```
## Building
In order to be able to compile this, you need to have devkitPPC installed
[devkitPPC](https://devkitpro.org/wiki/Getting_Started) with the following
pacman packages installed.
```
(sudo) (dkp-)pacman -Syu --needed wiiu-dev
```
Make sure the following environment variables are set:
```
DEVKITPRO=/opt/devkitpro
DEVKITPPC=/opt/devkitpro/devkitPPC
```
Also make sure to
install [wut](https://github.com/wiiu-env/wut), [WiiUPluginSystem](https://github.com/wiiu-env/WiiUPluginSystem), [libkernel](https://github.com/wiiu-env/libkernel)
and [libwupsbackend](https://github.com/wiiu-env/libwupsbackend).
## Building using the Dockerfile
It's possible to use a docker image for building. This way you don't need anything installed on your host system.
```
# Build docker image (only needed once)
docker build . -t gbdstubplugin-builder
# make
docker run -it --rm -v ${PWD}:/project gbdstubplugin-builder make
# make clean
docker run -it --rm -v ${PWD}:/project gbdstubplugin-builder make clean
```
## Format the code via docker
`docker run --rm -v ${PWD}:/src wiiuenv/clang-format:13.0.0-2 -r ./src -i`

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#include "global_vars.h"
bool gHeartbeatDisabled = false;
bool gInitStubs = false;

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#pragma once
extern bool gHeartbeatDisabled;
extern bool gInitStubs;

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#include "stub/GDBDefines.h"
#include <cstdint>
auto *gGDBGHSShowDrvrThreadsPtr = (uint32_t *) 0x1004f9bc;
auto *gAppflagsPtr = (uint32_t *) 0x10013c2c;
auto *gIsDebuggerPresentPtr = (uint32_t *) 0x1003aff8;
auto *DAT_100d1378Ptr = (uint32_t *) 0x100d1378;
auto *g100msInTicksPtr = (uint32_t *) 0x100523d8;
auto *gTimerKernelCallbackLastRunPtr = (uint32_t *) 0x100523d0;
auto *DAT_100d1374Ptr = (uint32_t *) 0x100d1374;
auto *gCoreCountPtr = (uint32_t *) 0x1004f9b8;
auto *gGDBStub_main_statePtr = (GDBMainState *) 0x1004f9b4;
auto *gIsDebuggerInitializedOnCore = (uint32_t *) 0x1004f974;
auto *gCoreData = (GDBCoreInfo *) 0x1004fb38;
auto *gCurrentThreadOnCore = (OSThread **) 0x10057c00;
GDBCoreInfo **gGDBCurCoreInfoPtr = (GDBCoreInfo **) 0x1004f9e4;
GDBCoreInfo **gGDBStoppedCoreInfoPtr = (GDBCoreInfo **) 0x1004f9e8;

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#pragma once
#include "stub/GDBDefines.h"
#include <coreinit/thread.h>
#include <cstdint>
extern uint32_t *gGDBGHSShowDrvrThreadsPtr;
extern uint32_t *gAppflagsPtr;
extern uint32_t *gIsDebuggerPresentPtr;
extern uint32_t *DAT_100d1378Ptr;
extern uint32_t *DAT_100d1374Ptr;
extern uint32_t *gCoreCountPtr;
extern GDBMainState *gGDBStub_main_statePtr;
extern uint32_t *g100msInTicksPtr;
extern uint32_t *gTimerKernelCallbackLastRunPtr;
extern GDBCoreInfo **gGDBCurCoreInfoPtr;
extern GDBCoreInfo **gGDBStoppedCoreInfoPtr;
extern OSThread **gCurrentThreadOnCore;
#define gGDBGHSShowDrvrThreads (*gGDBGHSShowDrvrThreadsPtr)
#define gAppflags (*gAppflagsPtr)
#define gIsDebuggerPresent (*gIsDebuggerPresentPtr)
#define DAT_100d1378 (*DAT_100d1378Ptr)
#define DAT_100d1374 (*DAT_100d1374Ptr)
#define gGDBStub_main_state (*gGDBStub_main_statePtr)
#define gCoreCount (*gCoreCountPtr)
#define g100msInTicks (*g100msInTicksPtr)
#define gTimerKernelCallbackLastRun (*gTimerKernelCallbackLastRunPtr)
#define gGDBCurCoreInfo (*gGDBCurCoreInfoPtr)
#define gGDBStoppedCoreInfo (*gGDBStoppedCoreInfoPtr)
extern uint32_t *gIsDebuggerInitializedOnCore;
extern GDBCoreInfo *gCoreData;
extern "C" uint32_t __OSGetAppFlags();
#define OSDisableUserHeartbeat ((void (*)(void))(0x101C400 + 0x155b0))

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#include "main.h"
#include "global_vars.h"
#include "stub/GDB_IO.h"
#include "utils/kernel.h"
#include <coreinit/debug.h>
#include <coreinit/launch.h>
#include <wups.h>
#include <wups_backend/api.h>
WUPS_PLUGIN_NAME("GDBStub");
WUPS_PLUGIN_DESCRIPTION("GDBStub");
WUPS_PLUGIN_VERSION(PLUGIN_VERSION_FULL);
WUPS_PLUGIN_AUTHOR("Maschell, GaryOderNichts");
WUPS_PLUGIN_LICENSE("GPL");
INITIALIZE_PLUGIN() {
gInitStubs = true;
EnableIABRandDABRSupport();
PluginBackendApiErrorType res;
if ((res = WUPSBackend_InitLibrary()) != PLUGIN_BACKEND_API_ERROR_NONE) {
OSReport("WUPSBackend_InitLibrary failed: %s", WUPSBackend_GetStatusStr(res));
}
}
DEINITIALIZE_PLUGIN() {
// The plugin is not loaded the syscalls would point to invalid memory.
// So we have to restore the syscalls before unloading
DisableIABRandDABRSupport();
}
ON_APPLICATION_START() {
ResetIOOffsets();
if (!gHeartbeatDisabled) {
OSReport("Heartbeat not disabled!\n");
OSRestartGame(0, nullptr);
}
}
ON_APPLICATION_ENDS() {
gHeartbeatDisabled = false;
bool stubNeedsToBeDisabled = false;
PluginBackendApiErrorType res;
if ((res = WUPSBackend_WillReloadPluginsOnNextLaunch(&stubNeedsToBeDisabled)) == PLUGIN_BACKEND_API_ERROR_NONE) {
if (stubNeedsToBeDisabled) {
gInitStubs = false;
}
} else {
OSReport("gdbstub: WUPSBackend_WillReloadPluginsOnNextLaunch failed: %s", WUPSBackend_GetStatusStr(res));
}
}

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#pragma once
#include "version.h"
#define PLUGIN_VERSION "v0.1"
#define PLUGIN_VERSION_FULL PLUGIN_VERSION PLUGIN_VERSION_EXTRA
// Uncomment to log incoming and outgoing packet
// #define PACKET_LOGGING
// Uncomment to add driver threads to the thread list
// #define SHOW_DRIVER_THREADS

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#include "global_vars.h"
#include "imports.h"
#include <cstring>
#include <wups/function_patching.h>
DECL_FUNCTION(void, OSPerGameInits) {
real_OSPerGameInits();
if (gInitStubs && !gHeartbeatDisabled) {
OSDisableUserHeartbeat();
gHeartbeatDisabled = true;
}
}
// Hooks into an empty function after the appflags were already set.
DECL_FUNCTION(void, EntryHook) {
if (gInitStubs) {
gAppflags |= 0x01; // Enable the GDBStub!
gAppflags |= 0x80; // We want to use PChar instead of EXI
}
}
// We have to "hide" the "GDBStub enabled" flag for everything that's using __OSGetAppFlags
DECL_FUNCTION(uint32_t, __OSGetAppFlags) {
auto res = real___OSGetAppFlags();
if (gInitStubs) {
res = res & ~0x01;
}
return res;
}
DECL_FUNCTION(int32_t, makeOpenPath, const char *path, char *out) {
strncpy(out, "/dev/iosuhax", 0x20);
return 0;
}
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(makeOpenPath, (0x3201C400 + (0x02040390 - 0x02000000)), (0x101C400 + (0x02040390 - 0x02000000)), WUPS_FP_TARGET_PROCESS_ALL);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(OSPerGameInits, (0x3001C400 + 0x020031ec), (0x020031ec - 0xFE3C00), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(EntryHook, (0x3001C400 + 0x020080a8), (0x020080a8 - 0xFE3C00), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(__OSGetAppFlags, (0x3001C400 + 0x02003308), (0x02003308 - 0xFE3C00), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);

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#pragma once

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#include "CoreAgent.h"
#include "CoreAgent_GetSetPhys.h"
#include "EnumToStringUtil.h"
#include "GDBDefines.h"
#include "GDBThreadDefines.h"
#include "GDBUtils.h"
#include "imports.h"
#include <coreinit/core.h>
#include <coreinit/debug.h>
#include <wups/function_patching.h>
static const char exception_print_formats[18][45] = {
"Exception type %d occurred!\n", // 0
"GPR00 %08X GPR08 %08X GPR16 %08X GPR24 %08X\n", // 1
"GPR01 %08X GPR09 %08X GPR17 %08X GPR25 %08X\n", // 2
"GPR02 %08X GPR10 %08X GPR18 %08X GPR26 %08X\n", // 3
"GPR03 %08X GPR11 %08X GPR19 %08X GPR27 %08X\n", // 4
"GPR04 %08X GPR12 %08X GPR20 %08X GPR28 %08X\n", // 5
"GPR05 %08X GPR13 %08X GPR21 %08X GPR29 %08X\n", // 6
"GPR06 %08X GPR14 %08X GPR22 %08X GPR30 %08X\n", // 7
"GPR07 %08X GPR15 %08X GPR23 %08X GPR31 %08X\n", // 8
"LR %08X SRR0 %08x SRR1 %08x\n", // 9
"DAR %08X DSISR %08X\n", // 10
"\nSTACK DUMP:", // 11
" --> ", // 12
" -->\n", // 13
"\n", // 14
"%p", // 15
"\nCODE DUMP:\n", // 16
"%p: %08X %08X %08X %08X\n", // 17
};
DECL_FUNCTION(void, __CoreAgent_SaveState, OSExceptionType exceptionType, OSContext *interruptedContext, OSContext *cbContext) {
auto *currentCoreInfo = &gCoreData[OSGetCoreId()];
currentCoreInfo->exception_level++;
if (currentCoreInfo->exception_level != 1) {
gIsDebuggerPresent = 0;
CoreAgent_SetCoreState(currentCoreInfo, GDBSTUB_STATE_STOPPING);
const char *FPAsString = "OFF";
const char *PRAsString = "";
if ((interruptedContext->srr1 & MSR_BIT_FP) != 0) {
FPAsString = "ON";
}
if ((interruptedContext->srr1 & MSR_BIT_PR) != 0) {
PRAsString = " USER";
}
auto *exceptionAsStr = GDBStub_OSExceptionToString(exceptionType);
OSReport("PANIC %s context:$%08x SRR0:$%08x SRR1:$%08x FP:%s%s\n",
exceptionAsStr, interruptedContext, interruptedContext->srr0,
interruptedContext->srr1, FPAsString, PRAsString);
OSReport(
"DOUBLE FAULT: __CoreAgent_SaveState(%d %08x) core->exception_level (%d) != 1\n",
exceptionType,
interruptedContext,
currentCoreInfo->exception_level);
OSReport(exception_print_formats[1], interruptedContext->gpr[0], interruptedContext->gpr[8], interruptedContext->gpr[16], interruptedContext->gpr[24]);
OSReport(exception_print_formats[2], interruptedContext->gpr[1], interruptedContext->gpr[9], interruptedContext->gpr[17], interruptedContext->gpr[25]);
OSReport(exception_print_formats[3], interruptedContext->gpr[2], interruptedContext->gpr[10], interruptedContext->gpr[18], interruptedContext->gpr[26]);
OSReport(exception_print_formats[4], interruptedContext->gpr[3], interruptedContext->gpr[11], interruptedContext->gpr[19], interruptedContext->gpr[27]);
OSReport(exception_print_formats[5], interruptedContext->gpr[4], interruptedContext->gpr[12], interruptedContext->gpr[20], interruptedContext->gpr[28]);
OSReport(exception_print_formats[6], interruptedContext->gpr[5], interruptedContext->gpr[13], interruptedContext->gpr[21], interruptedContext->gpr[29]);
OSReport(exception_print_formats[7], interruptedContext->gpr[6], interruptedContext->gpr[14], interruptedContext->gpr[22], interruptedContext->gpr[30]);
OSReport(exception_print_formats[8], interruptedContext->gpr[7], interruptedContext->gpr[15], interruptedContext->gpr[23], interruptedContext->gpr[31]);
OSReport(exception_print_formats[9], interruptedContext->lr, interruptedContext->srr0, interruptedContext->srr1);
if (exceptionType == OS_EXCEPTION_TYPE_DSI) {
OSReport(exception_print_formats[10], interruptedContext->dsisr, interruptedContext->dar); // this freezes
}
do {
CoreAgent_SetCoreState(currentCoreInfo, GDBSTUB_STATE_HUNG);
} while (true);
}
CoreAgent_SetCoreState(currentCoreInfo, GDBSTUB_STATE_STOPPING);
currentCoreInfo->stoppedContext = interruptedContext;
GDBStub_MasterCore();
currentCoreInfo->stoppedThread = gCurrentThreadOnCore[currentCoreInfo->core];
if (currentCoreInfo->stoppedThread == (OSThread *) nullptr) {
auto curCore = currentCoreInfo->core;
if (curCore == 0) {
currentCoreInfo->stoppedThread = IDLE_THREAD_CORE_0;
} else if (curCore == 1) {
currentCoreInfo->stoppedThread = IDLE_THREAD_CORE_1;
} else if (curCore == 2) {
currentCoreInfo->stoppedThread = IDLE_THREAD_CORE_2;
}
} else {
if (currentCoreInfo->stoppedThread != (OSThread *) interruptedContext) {
// Check if the interruptedContext is on the stack of the stopped thread.
if (((uint32_t) interruptedContext >= (uint32_t) currentCoreInfo->stoppedThread->stackStart) &&
((uint32_t) interruptedContext < (uint32_t) currentCoreInfo->stoppedThread->stackEnd)) {
}
}
}
currentCoreInfo->currentContext = currentCoreInfo->stoppedContext;
currentCoreInfo->currentThread = currentCoreInfo->stoppedThread;
FlushFPUContext();
currentCoreInfo->signal = GDBSIGNAL_SIGTRAP;
currentCoreInfo->OSException = (char) exceptionType;
if (currentCoreInfo->dabr != 0) {
CoreAgent_SetPhyReg32(GDB_REGISTER_DABR, 0);
}
if (currentCoreInfo->iabr != 0) {
CoreAgent_SetPhyReg32(GDB_REGISTER_IABR, 0);
}
bool skipSetCoreData = false;
switch (exceptionType) {
case OS_EXCEPTION_TYPE_DSI: {
auto DSISR = CoreAgent_GetPhyReg32(GDB_REGISTER_DSISR);
if ((currentCoreInfo->dabr != 0) && (DSISR & DSISR_FLAG_DABRMatch) == DSISR_FLAG_DABRMatch) {
currentCoreInfo->signal = GDBSIGNAL_SIGTRAP;
currentCoreInfo->dar = CoreAgent_GetPhyReg32(GDB_REGISTER_DAR);
} else {
currentCoreInfo->signal = GDBSIGNAL_SIGSEGV;
}
break;
}
case OS_EXCEPTION_TYPE_ALIGNMENT: {
currentCoreInfo->signal = GDBSIGNAL_SIGBUS;
break;
}
case OS_EXCEPTION_TYPE_SYSTEM_RESET:
case OS_EXCEPTION_TYPE_MACHINE_CHECK:
case OS_EXCEPTION_TYPE_DECREMENTER: {
currentCoreInfo->signal = GDBSIGNAL_SIGINT;
break;
}
case OS_EXCEPTION_TYPE_TRACE:
case OS_EXCEPTION_TYPE_BREAKPOINT: {
currentCoreInfo->signal = GDBSIGNAL_SIGTRAP;
break;
}
case OS_EXCEPTION_TYPE_ICI: {
currentCoreInfo->signal = GDBSIGNAL_RESUME;
break;
}
case OS_EXCEPTION_TYPE_PROGRAM: {
auto curPC = CoreAgent_PeekWord32((void *) interruptedContext->srr0);
if (curPC == TRAP_INSTRUCTION) {
currentCoreInfo->signal = GDBSIGNAL_BREAKPT;
} else if (curPC == DBGSTR_INSTRUCTION) {
currentCoreInfo->signal = GDBSIGNAL_DBGSTR;
} else if (curPC == DBGMSG_INSTRUCTION) {
currentCoreInfo->signal = GDBSIGNAL_DBGMSG;
} else if (curPC == DBGCTL_INSTRUCTION) {
currentCoreInfo->signal = GDBSIGNAL_DBGCTL;
} else {
currentCoreInfo->signal = GDBSIGNAL_SIGILL;
}
break;
}
case OS_EXCEPTION_TYPE_ISI:
case OS_EXCEPTION_TYPE_EXTERNAL_INTERRUPT:
case OS_EXCEPTION_TYPE_FLOATING_POINT:
case OS_EXCEPTION_TYPE_SYSTEM_CALL:
case OS_EXCEPTION_TYPE_PERFORMANCE_MONITOR:
case OS_EXCEPTION_TYPE_SYSTEM_INTERRUPT:
default:
currentCoreInfo->signal = GDBSIGNAL_SIG0;
skipSetCoreData = true;
break;
}
if (!skipSetCoreData) {
currentCoreInfo->cachedMSR = interruptedContext->srr1 & 0x87c0ffff;
currentCoreInfo->cachedHID2 = 0;
currentCoreInfo->cachedPC = (currentCoreInfo->currentContext)->srr0;
(currentCoreInfo->currentContext)->srr1 = (currentCoreInfo->currentContext)->srr1 & ~MSR_BIT_SE;
CoreAgent_SetMasterReq(currentCoreInfo, GDBSTUB_REQ_STOPPED);
CoreAgent_SetCoreState(currentCoreInfo, GDBSTUB_STATE_STOPPED);
}
if (currentCoreInfo->cmd.cmd == GDBSTUB_CMD_SINGLESTEP) {
(currentCoreInfo->currentContext)->srr1 = (currentCoreInfo->currentContext)->srr1 | (uint32_t) currentCoreInfo->stoppedContextExternalIinterruptBit;
CoreAgent_SetCmdDone(currentCoreInfo);
}
CoreAgent_MasterAgentLoop(currentCoreInfo);
do {
CoreAgent_SetCoreState(currentCoreInfo, GDBSTUB_STATE_HUNG);
} while (true);
}
DECL_FUNCTION(void, CoreAgent_ResumeCore, GDBCoreInfo *curCoreData) {
auto stoppedContext = curCoreData->stoppedContext;
if (curCoreData->req.ack != curCoreData->reqAckValue) {
return;
}
CoreAgent_SetCoreState(curCoreData, GDBSTUB_STATE_PROCESSING);
uint32_t curPCInstruction = CoreAgent_PeekWord32((void *) stoppedContext->srr0);
if (curPCInstruction == TRAP_INSTRUCTION ||
curPCInstruction == DBGSTR_INSTRUCTION ||
curPCInstruction == DBGMSG_INSTRUCTION ||
curPCInstruction == DBGCTL_INSTRUCTION) {
stoppedContext->srr0 = stoppedContext->srr0 + 4;
}
if (curCoreData->cmd.cmd == GDBSTUB_CMD_CONTINUE) {
CoreAgent_SetCoreState(curCoreData, GDBSTUB_STATE_RUNNING);
curCoreData->stoppedContextExternalIinterruptBit = 0;
stoppedContext->srr1 = stoppedContext->srr1 & ~MSR_BIT_SE;
} else if (curCoreData->cmd.cmd == GDBSTUB_CMD_SINGLESTEP) {
CoreAgent_SetCoreState(curCoreData, GDBSTUB_STATE_SINGLESTEP);
curCoreData->stoppedContextExternalIinterruptBit = ((uint16_t) stoppedContext->srr1) | MSR_BIT_EE;
stoppedContext->srr1 = (stoppedContext->srr1 & ~MSR_BIT_EE) | MSR_BIT_SE;
}
if (curCoreData->cmd.cmd == GDBSTUB_CMD_CONTINUE) {
CoreAgent_SetCmdDone(curCoreData);
}
curCoreData->exception_level--;
gTimerKernelCallbackLastRun = in_TBLr();
if (curCoreData->dabr != 0) {
CoreAgent_SetPhyReg32(GDB_REGISTER_DABR, curCoreData->dabr);
}
if (curCoreData->iabr != 0) {
CoreAgent_SetPhyReg32(GDB_REGISTER_IABR, curCoreData->iabr);
}
if (curCoreData->cmd.cmd == GDBSTUB_CMD_CONTINUE) {
__OSSetAndLoadContext(stoppedContext);
return;
}
__OSSetAndLoadContextDebugger(stoppedContext);
}
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(__CoreAgent_SaveState, (0x3201C400 + (0x02068408 - 0x02000000)), (0x101C400 + (0x02068408 - 0x02000000)), WUPS_FP_TARGET_PROCESS_ALL);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(CoreAgent_ResumeCore, (0x3201C400 + (0x02067f60 - 0x02000000)), (0x101C400 + (0x02067f60 - 0x02000000)), WUPS_FP_TARGET_PROCESS_ALL);

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#pragma once
#define __CoreAgent_SaveState ((void (*)(OSExceptionType exceptionType, OSContext * interruptedContext, OSContext * cbContext))(0x101C400 + 0x02068408 - 0x02000000))
#define CoreAgent_ResumeCore ((void (*)(GDBCoreInfo *))(0x101C400 + 0x02067f60 - 0x02000000))
#define CoreAgent_SetMasterReq ((void (*)(GDBCoreInfo *, GDBStub_Req))(0x101C400 + 0x02067ac8 - 0x02000000))
#define CoreAgent_MasterAgentLoop ((void (*)(GDBCoreInfo *))(0x101C400 + 0x020683e0 - 0x02000000))
#define CoreAgent_SetCoreState ((void (*)(GDBCoreInfo *, GDBStubState))(0x101C400 + 0x020679c8 - 0x02000000))
#define CoreAgent_SetCmdDone ((void (*)(GDBCoreInfo *))(0x101C400 + 0x02067ab0 - 0x02000000))

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src/stub/CoreAgent_GetSetPhys.h Normal file
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#pragma once
#define CoreAgent_GetPhyReg32 ((uint32_t(*)(uint32_t))(0x101C400 + 0x02067b20 - 0x02000000))
#define CoreAgent_SetPhyReg32 ((uint32_t(*)(uint32_t, uint32_t))(0x101C400 + 0x02067b98 - 0x02000000))
#define CoreAgent_PeekWord32 ((uint32_t(*)(void *))(0x101C400 + 0x02067cc0 - 0x02000000))

29
src/stub/CoreAgent_MemorySetGet.cpp Normal file
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#include "CoreAgent_MemorySetGet.h"
#include "utils/kernel.h"
#include <coreinit/cache.h>
#include <coreinit/debug.h>
#include <coreinit/memorymap.h>
#include <cstring>
#include <wups/function_patching.h>
DECL_FUNCTION(uint32_t, CoreAgent_GetCoreMem, void *addr, uint32_t size, void *outRes) {
if (OSIsAddressValid((uint32_t) addr)) {
KernelWrite((uint32_t) outRes, addr, size);
} else {
memset(outRes, 0, size);
OSReport("CoreAgent_GetCoreMem invalid addr: %08X\n", addr);
}
return 0;
}
DECL_FUNCTION(uint32_t, CoreAgent_SetCoreMem, void *addr, uint32_t size, void *srcBuf) {
KernelWrite((uint32_t) addr, srcBuf, size);
ICInvalidateRange(addr, size);
DCFlushRange(addr, size);
return 0;
}
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(CoreAgent_GetCoreMem, (0x3201C400 + (0x02067bd4 - 0x02000000)), (0x101C400 + (0x02067bd4 - 0x02000000)), WUPS_FP_TARGET_PROCESS_ALL);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(CoreAgent_SetCoreMem, (0x3201C400 + (0x02067cf8 - 0x02000000)), (0x101C400 + (0x02067cf8 - 0x02000000)), WUPS_FP_TARGET_PROCESS_ALL);

5
src/stub/CoreAgent_MemorySetGet.h Normal file
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#pragma once
#include <cstdint>
#define CoreAgent_GetCoreMem ((uint32_t(*)(void *addr, uint32_t size, void *outRes))(0x101C400 + 0x02067bd4 - 0x02000000))
#define CoreAgent_SetCoreMem ((uint32_t(*)(void *addr, uint32_t size, void *srcBuf))(0x101C400 + 0x02067cf8 - 0x02000000))

149
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#include "EnumToStringUtil.h"
const char *GDBStub_OSExceptionToString(OSExceptionType type) {
switch (type) {
case OS_EXCEPTION_TYPE_SYSTEM_RESET:
return "SYSTEM_RESET";
case OS_EXCEPTION_TYPE_MACHINE_CHECK:
return "MACHINE_CHECK";
case OS_EXCEPTION_TYPE_DSI:
return "DSI ";
case OS_EXCEPTION_TYPE_ISI:
return "ISI ";
case OS_EXCEPTION_TYPE_EXTERNAL_INTERRUPT:
return "EXTERNAL ";
case OS_EXCEPTION_TYPE_ALIGNMENT:
return "ALIGNMENT";
case OS_EXCEPTION_TYPE_PROGRAM:
return "PROGRAM ";
case OS_EXCEPTION_TYPE_FLOATING_POINT:
return "FP ";
case OS_EXCEPTION_TYPE_DECREMENTER:
return "DECREMENT";
case OS_EXCEPTION_TYPE_SYSTEM_CALL:
return "SYS_CALL ";
case OS_EXCEPTION_TYPE_TRACE:
return "TRACE ";
case OS_EXCEPTION_TYPE_PERFORMANCE_MONITOR:
return "PERF_MON ";
case OS_EXCEPTION_TYPE_BREAKPOINT:
return "BREAKPTR ";
case OS_EXCEPTION_TYPE_SYSTEM_INTERRUPT:
return "SYS_INTER";
case OS_EXCEPTION_TYPE_ICI:
return "ICI ";
case 15:
return "NONE*****";
}
return "UNKNOWN EXCEPTION";
}
// Checked
const char *GDBStub_SigToString(GDB_SIGNAL signal) {
switch (signal) {
case GDBSIGNAL_SIG0:
return "GDBSIGNAL_SIG0";
case GDBSIGNAL_SIGINT:
return "GDBSIGNAL_SIGINT";
case GDBSIGNAL_SIGQUIT:
return "GDBSIGNAL_SIGQUIT";
case GDBSIGNAL_SIGILL:
return "GDBSIGNAL_SIGILL";
case GDBSIGNAL_SIGTRAP:
return "GDBSIGNAL_SIGTRAP";
case GDBSIGNAL_SIGKILL:
return "GDBSIGNAL_SIGKILL";
case GDBSIGNAL_SIGBUS:
return "GDBSIGNAL_SIGBUS";
case GDBSIGNAL_SIGSEGV:
return "GDBSIGNAL_SIGSEGV";
case GDBSIGNAL_SIGTERM:
return "GDBSIGNAL_SIGTERM";
case GDBSIGNAL_SIGSTOP:
return "GDBSIGNAL_SIGSTOP";
case GDBSIGNAL_RESUME:
return "GDBSIGNAL_RESUME";
case GDBSIGNAL_DBGCTL:
return "GDBSIGNAL_DBGCTL";
case GDBSIGNAL_DBGMSG:
return "GDBSIGNAL_DBGMSG";
case GDBSIGNAL_BREAKPT:
return "GDBSIGNAL_BREAKPT";
case GDBSIGNAL_DBGSTR:
return "GDBSIGNAL_DBGSTR";
}
return "**INVALID**";
}
// Checked
const char *GDBStub_StateToString(GDBStubState state) {
switch (state) {
case GDBSTUB_STATE_INACTIVE:
return "INACTIVE";
case GDBSTUB_STATE_STOPPED:
return "STOPPED";
case GDBSTUB_STATE_RUNNING:
return "RUNNING";
case GDBSTUB_STATE_STOPPING:
return "STOPPING";
case GDBSTUB_STATE_SINGLESTEP:
return "SINGLESTEP";
case GDBSTUB_STATE_PROCESSING:
return "PROCESSING";
case GDBSTUB_STATE_HUNG:
return "HUNG";
}
return "**INVALID**";
}
const char *GDBStub_GDBFlagsToString(GDBStub_GDBFlags flag) {
switch (flag) {
case GDBFLAGS_ZERO:
return "<zero> ";
case GDBFLAGS_GDBSTOP:
return "GDBSTOP";
case GDBFLAGS_GDBSTEP:
return "GDBSTEP";
case GDBFLAGS_GDBCONT:
return "GDBCONT";
default:
break;
}
return "<inval>";
}
const char *GDBStub_CmdToString(GDBStub_CMD cmd) {
switch (cmd) {
case GDBSTUB_CMD_IDLE:
return "IDLE";
case GDBSTUB_CMD_STOP:
return "STOP";
case GDBSTUB_CMD_CONTINUE:
return "CONTINUE";
case GDBSTUB_CMD_SINGLESTEP:
return "SINGLESTEP";
case GDBSTUB_CMD_GETSYSREG:
return "GETSYSREG";
case GDBSTUB_CMD_PUTSYSREG:
return "PUTSYSREG";
case GDBSTUB_CMD_ICINVALIDBLK:
return "ICINVALIDBLK";
case GDBSTUB_CMD_DCINVALRNG:
return "DCINVALRNG";
case GDBSTUB_CMD_GETCOREMEM:
return "GETCOREMEM";
case GDBSTUB_CMD_PUTCOREMEM:
return "PUTCOREMEM";
}
return "**INVALID**";
}
const char *GDBStub_ReqToString(GDBStub_Req req) {
switch (req) {
case GDBSTUB_REQ_STOPPED:
return "STOPPED";
case GDBSTUB_REQ_FINISHED:
return "FINISHED";
}
return "**INVALID**";
}

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#pragma once
#include "GDBDefines.h"
#include <coreinit/exception.h>
const char *GDBStub_OSExceptionToString(OSExceptionType type);
const char *GDBStub_SigToString(GDB_SIGNAL signal);
const char *GDBStub_StateToString(GDBStubState state);
const char *GDBStub_GDBFlagsToString(GDBStub_GDBFlags flag);
const char *GDBStub_CmdToString(GDBStub_CMD cmd);
const char *GDBStub_ReqToString(GDBStub_Req req);

3
src/stub/GDBDParseUtils.h Normal file
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#pragma once
#define gdb_getint ((uint32_t(*)(char **))(0x101C400 + 0x0203b628 - 0x02000000))

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#pragma once
#include <coreinit/context.h>
#include <coreinit/kernel.h>
#include <coreinit/rendezvous.h>
#include <coreinit/thread.h>
#include <cstdint>
#include <wut.h>
typedef enum GDBStub_CMD : uint8_t {
GDBSTUB_CMD_IDLE = 0,
GDBSTUB_CMD_STOP = 1,
GDBSTUB_CMD_CONTINUE = 2,
GDBSTUB_CMD_SINGLESTEP = 3,
GDBSTUB_CMD_GETSYSREG = 4,
GDBSTUB_CMD_PUTSYSREG = 5,
GDBSTUB_CMD_ICINVALIDBLK = 6,
GDBSTUB_CMD_DCINVALRNG = 7,
GDBSTUB_CMD_GETCOREMEM = 8,
GDBSTUB_CMD_PUTCOREMEM = 9
} GDBStub_CMD;
typedef enum GDBMainState {
GDBMAINSTATE_LOOP = 0,
GDBMAINSTATE_STEP = 1,
GDBMAINSTATE_RUN = 2,
GDBMAINSTATE_VCONT = 3,
GDBMAINSTATE_MAX_VALUE = 4
} GDBMainState;
typedef enum GDBStub_GDBFlags : uint8_t {
GDBFLAGS_ZERO = 0,
GDBFLAGS_GDBSTOP = 1,
GDBFLAGS_GDBSTEP = 2,
GDBFLAGS_INVAL = 3,
GDBFLAGS_GDBCONT = 4
} GDBStub_GDBFlags;
typedef enum GDB_SIGNAL : uint16_t {
GDBSIGNAL_SIG0 = 0,
GDBSIGNAL_SIGINT = 2,
GDBSIGNAL_SIGQUIT = 3,
GDBSIGNAL_SIGILL = 4,
GDBSIGNAL_SIGTRAP = 5,
GDBSIGNAL_SIGKILL = 9,
GDBSIGNAL_SIGBUS = 10,
GDBSIGNAL_SIGSEGV = 11,
GDBSIGNAL_SIGTERM = 15,
GDBSIGNAL_SIGSTOP = 17,
GDBSIGNAL_RESUME = 65437,
GDBSIGNAL_DBGCTL = 65445,
GDBSIGNAL_DBGMSG = 65446,
GDBSIGNAL_BREAKPT = 65534,
GDBSIGNAL_DBGSTR = 65535
} GDB_SIGNAL;
typedef enum GDBStub_ACCESS {
GDBSTUB_ACCESS_NONE = 0,
GDBSTUB_ACCESS_READ = 1,
GDBSTUB_ACCESS_WRITE = 2
} GDBStub_ACCESS;
typedef enum GDBStubState {
GDBSTUB_STATE_INACTIVE = 0,
GDBSTUB_STATE_STOPPED = 1,
GDBSTUB_STATE_RUNNING = 2,
GDBSTUB_STATE_STOPPING = 3,
GDBSTUB_STATE_SINGLESTEP = 4,
GDBSTUB_STATE_PROCESSING = 5,
GDBSTUB_STATE_HUNG = 6
} GDBStubState;
typedef enum GDBStub_Req : uint8_t {
GDBSTUB_REQ_STOPPED = 0,
GDBSTUB_REQ_FINISHED = 1
} GDBStub_Req;
typedef struct WUT_PACKED CMDStruct {
GDBStub_CMD cmd;
struct WUT_PACKED {
unsigned int ack : 24;
};
} CMDStruct;
WUT_CHECK_OFFSET(CMDStruct, 0, cmd);
WUT_CHECK_SIZE(CMDStruct, 0x4);
typedef struct WUT_PACKED REQStruct {
GDBStub_Req req;
struct WUT_PACKED {
unsigned int ack : 24;
};
} REQStruct;
WUT_CHECK_SIZE(REQStruct, 0x4);
typedef struct WUT_PACKED GDBCoreInfo {
uint8_t core;
GDBStub_GDBFlags flag;
uint16_t stoppedContextExternalIinterruptBit;
GDB_SIGNAL nextSignal__;
GDB_SIGNAL signal;
GDBStub_ACCESS accessType;
uint32_t accessLevel;
char OSException;
WUT_UNKNOWN_BYTES(3);
int32_t exception_level;
uint32_t numPrintedMessages;
uint32_t totalMessagesInQueue;
OSContext *exceptionContext;
void *exceptionStack;
GDBStubState state;
uint32_t lastStateUpdateTime;
REQStruct req;
uint32_t reqAckValue;
uint32_t req_arg;
uint32_t lastReqSetTime;
uint32_t reqDoneTime;
CMDStruct cmd;
uint32_t cmdAckValue;
uint32_t cmdArg1;
uint32_t cmdArg2;
uint32_t cmdResult;
uint32_t cmdDoneTime;
uint32_t cmdSetAtTime;
OSThread *stoppedThread;
OSContext *stoppedContext;
OSThread *currentThread;
OSContext *currentContext;
uint32_t virtual_ssr0;
uint32_t virtual_ssr1;
uint32_t cachedHID2;
uint32_t cachedMSR;
uint32_t cachedPC;
uint32_t dabr;
uint32_t iabr;
uint32_t dar;
} GDBCoreInfo;
WUT_CHECK_OFFSET(GDBCoreInfo, 0, core);
WUT_CHECK_OFFSET(GDBCoreInfo, 1, flag);
WUT_CHECK_OFFSET(GDBCoreInfo, 2, stoppedContextExternalIinterruptBit);
WUT_CHECK_OFFSET(GDBCoreInfo, 4, nextSignal__);
WUT_CHECK_OFFSET(GDBCoreInfo, 6, signal);
WUT_CHECK_OFFSET(GDBCoreInfo, 8, accessType);
WUT_CHECK_OFFSET(GDBCoreInfo, 12, accessLevel);
WUT_CHECK_OFFSET(GDBCoreInfo, 20, exception_level);
WUT_CHECK_OFFSET(GDBCoreInfo, 24, numPrintedMessages);
WUT_CHECK_OFFSET(GDBCoreInfo, 28, totalMessagesInQueue);
WUT_CHECK_OFFSET(GDBCoreInfo, 32, exceptionContext);
WUT_CHECK_OFFSET(GDBCoreInfo, 36, exceptionStack);
WUT_CHECK_OFFSET(GDBCoreInfo, 40, state);
WUT_CHECK_OFFSET(GDBCoreInfo, 44, lastStateUpdateTime);
WUT_CHECK_OFFSET(GDBCoreInfo, 48, req);
WUT_CHECK_OFFSET(GDBCoreInfo, 52, reqAckValue);
WUT_CHECK_OFFSET(GDBCoreInfo, 56, req_arg);
WUT_CHECK_OFFSET(GDBCoreInfo, 60, lastReqSetTime);
WUT_CHECK_OFFSET(GDBCoreInfo, 64, reqDoneTime);
WUT_CHECK_OFFSET(GDBCoreInfo, 68, cmd);
WUT_CHECK_OFFSET(GDBCoreInfo, 72, cmdAckValue);
WUT_CHECK_OFFSET(GDBCoreInfo, 76, cmdArg1);
WUT_CHECK_OFFSET(GDBCoreInfo, 80, cmdArg2);
WUT_CHECK_OFFSET(GDBCoreInfo, 84, cmdResult);
WUT_CHECK_OFFSET(GDBCoreInfo, 88, cmdDoneTime);
WUT_CHECK_OFFSET(GDBCoreInfo, 92, cmdSetAtTime);
WUT_CHECK_OFFSET(GDBCoreInfo, 96, stoppedThread);
WUT_CHECK_OFFSET(GDBCoreInfo, 100, stoppedContext);
WUT_CHECK_OFFSET(GDBCoreInfo, 104, currentThread);
WUT_CHECK_OFFSET(GDBCoreInfo, 108, currentContext);
WUT_CHECK_OFFSET(GDBCoreInfo, 112, virtual_ssr0);
WUT_CHECK_OFFSET(GDBCoreInfo, 116, virtual_ssr1);
WUT_CHECK_OFFSET(GDBCoreInfo, 120, cachedHID2);
WUT_CHECK_OFFSET(GDBCoreInfo, 124, cachedMSR);
WUT_CHECK_OFFSET(GDBCoreInfo, 128, cachedPC);
WUT_CHECK_OFFSET(GDBCoreInfo, 132, dabr);
WUT_CHECK_OFFSET(GDBCoreInfo, 136, iabr);
WUT_CHECK_OFFSET(GDBCoreInfo, 140, dar);
WUT_CHECK_SIZE(GDBCoreInfo, 144);
typedef enum DebugQueueType {
STRING = 0,
SET_CMD = 1,
ACK_CMD = 2,
SET_REQ = 3,
ACK_REQ = 4
} DebugQueueType;
typedef struct GDBDebugMessageString {
const char *format;
void *args[9];
} GDBDebugMessageString;
WUT_CHECK_OFFSET(GDBDebugMessageString, 0x0, format);
WUT_CHECK_OFFSET(GDBDebugMessageString, 0x4, args);
WUT_CHECK_SIZE(GDBDebugMessageString, 40);
typedef struct GDBDebugMessageAckCmd {
GDBStub_CMD cmd;
uint32_t cmdAck;
uint32_t cmdResult;
} GDBDebugMessageAckCmd;
WUT_CHECK_OFFSET(GDBDebugMessageAckCmd, 0x0, cmd);
WUT_CHECK_OFFSET(GDBDebugMessageAckCmd, 0x4, cmdAck);
WUT_CHECK_OFFSET(GDBDebugMessageAckCmd, 0x8, cmdResult);
WUT_CHECK_SIZE(GDBDebugMessageAckCmd, 0xC);
typedef struct GDBDebugMessageSetReq {
GDBStub_Req req;
uint32_t reqAck;
uint32_t arg;
} GDBDebugMessageSetReq;
WUT_CHECK_OFFSET(GDBDebugMessageSetReq, 0x0, req);
WUT_CHECK_OFFSET(GDBDebugMessageSetReq, 0x4, reqAck);
WUT_CHECK_OFFSET(GDBDebugMessageSetReq, 0x8, arg);
WUT_CHECK_SIZE(GDBDebugMessageSetReq, 0xC);
typedef struct GDBDebugMessageSetCmd {
uint32_t core;
GDBStub_CMD cmd;
uint32_t cmdCount;
uint32_t arg1;
uint32_t arg2;
} GDBDebugMessageSetCmd;
WUT_CHECK_OFFSET(GDBDebugMessageSetCmd, 0x0, core);
WUT_CHECK_OFFSET(GDBDebugMessageSetCmd, 0x4, cmd);
WUT_CHECK_OFFSET(GDBDebugMessageSetCmd, 0x8, cmdCount);
WUT_CHECK_OFFSET(GDBDebugMessageSetCmd, 0xC, arg1);
WUT_CHECK_OFFSET(GDBDebugMessageSetCmd, 0x10, arg2);
WUT_CHECK_SIZE(GDBDebugMessageSetCmd, 0x14);
typedef struct GDBDebugMessageAckReq {
uint32_t core;
GDBStub_Req req;
uint32_t reqCount;
} GDBDebugMessageAckReq;
WUT_CHECK_OFFSET(GDBDebugMessageAckReq, 0x0, core);
WUT_CHECK_OFFSET(GDBDebugMessageAckReq, 0x4, req);
WUT_CHECK_OFFSET(GDBDebugMessageAckReq, 0x8, reqCount);
WUT_CHECK_SIZE(GDBDebugMessageAckReq, 0x0C);
typedef struct debug_queue_msg {
uint64_t timeInTicks;
uint32_t debugMask;
DebugQueueType type;
union {
GDBDebugMessageString dbgStr;
GDBDebugMessageAckCmd dbgAckCmd;
GDBDebugMessageAckReq dbgAckReq;
GDBDebugMessageSetCmd dbgSetCmd;
GDBDebugMessageSetReq dbgSetReq;
WUT_UNKNOWN_BYTES(0x20);
};
WUT_PADDING_BYTES(8);
} debug_queue_msg;
WUT_CHECK_OFFSET(debug_queue_msg, 0x0, timeInTicks);
WUT_CHECK_OFFSET(debug_queue_msg, 0x8, debugMask);
WUT_CHECK_OFFSET(debug_queue_msg, 0xC, type);
WUT_CHECK_OFFSET(debug_queue_msg, 0x10, dbgStr);
WUT_CHECK_OFFSET(debug_queue_msg, 0x10, dbgAckCmd);
WUT_CHECK_OFFSET(debug_queue_msg, 0x10, dbgAckReq);
WUT_CHECK_OFFSET(debug_queue_msg, 0x10, dbgSetCmd);
WUT_CHECK_OFFSET(debug_queue_msg, 0x10, dbgSetReq);
WUT_CHECK_SIZE(debug_queue_msg, 64);
typedef enum GDBWatchState : uint8_t {
GDBWATCHSTATE_UNKNOWN = 0,
GDBWATCHSTATE_RWATCH = 5,
GDBWATCHSTATE_WATCH = 6,
GDBWATCHSTATE_AWATCH = 7,
} GDBWatchState;
#define MSR_BIT_POW (1 << (31 - 13)) /*0x40000*/
#define MSR_BIT_RESERVED0 (1 << (31 - 14)) /*0x20000*/
#define MSR_BIT_ILE (1 << (31 - 15)) /*0x10000*/
#define MSR_BIT_EE (1 << (31 - 16)) /*0x8000*/
#define MSR_BIT_PR (1 << (31 - 17)) /*0x4000*/
#define MSR_BIT_FP (1 << (31 - 18)) /*0x2000*/
#define MSR_BIT_ME (1 << (31 - 19)) /*0x1000*/
#define MSR_BIT_FE0 (1 << (31 - 20)) /*0x800*/
#define MSR_BIT_SE (1 << (31 - 21)) /*0x400*/
#define MSR_BIT_BE (1 << (31 - 22)) /*0x200*/
#define MSR_BIT_FE1 (1 << (31 - 23)) /*0x100*/
#define MSR_BIT_RESERVED1 (1 << (31 - 24)) /*0x80*/
#define MSR_BIT_IP (1 << (31 - 25)) /*0x40*/
#define MSR_BIT_IR (1 << (31 - 26)) /*0x20*/
#define MSR_BIT_DR (1 << (31 - 27)) /*0x10*/
#define MSR_BIT_RESERVED2 (1 << (31 - 28)) /*8*/
#define MSR_BIT_PM (1 << (31 - 29)) /*4*/
#define MSR_BIT_RI (1 << (31 - 30)) /*2 */
#define MSR_BIT_LE (1 << (31 - 31)) /*1*/
#define TRAP_INSTRUCTION 0x7FE00008
#define DBGSTR_INSTRUCTION 0x7ffff808
#define DBGMSG_INSTRUCTION 0x7ffef008
#define DBGCTL_INSTRUCTION 0x7ffe0008
#define GDB_REGISTER_R0 0x00
#define GDB_REGISTER_R1 0x01
#define GDB_REGISTER_R2 0x02
#define GDB_REGISTER_R3 0x03
#define GDB_REGISTER_R4 0x04
#define GDB_REGISTER_R5 0x05
#define GDB_REGISTER_R6 0x06
#define GDB_REGISTER_R7 0x07
#define GDB_REGISTER_R31 0x1F
#define GDB_REGISTER_F0 0x20
#define GDB_REGISTER_F31 0x3F
#define GDB_REGISTER_PC 0x40
#define GDB_REGISTER_MSR 0x41
#define GDB_REGISTER_CR 0x42
#define GDB_REGISTER_LR 0x43
#define GDB_REGISTER_CTR 0x44
#define GDB_REGISTER_XER 0x45
#define GDB_REGISTER_FPSCR 0x46
#define GDB_REGISTER_DAR 0x6a
#define GDB_REGISTER_DSISR 0x6b
#define GDB_REGISTER_SRR0 0x70
#define GDB_REGISTER_SRR1 0x71
#define GDB_REGISTER_DABR 0x75
#define GDB_REGISTER_IABR 0x79
#define GDB_REGISTER_HID2 0x9F
#define GDB_REGISTER_PIR 0xD6
#define GDB_REGISTER_WPAR 0xA5
#define GDB_REGISTER_PS0 0xA6
#define GDB_REGISTER_PS31 0xC5
#define GDB_REGISTER_GQR0 0xC6
#define GDB_REGISTER_GQR1 0xC7
#define GDB_REGISTER_GQR2 0xC8
#define GDB_REGISTER_GQR3 0xC9
#define GDB_REGISTER_GQR4 0xCA
#define GDB_REGISTER_GQR5 0xCB
#define GDB_REGISTER_GQR6 0xCC
#define GDB_REGISTER_GQR7 0xCD
#define DSISR_FLAG_ACCESS_RESTRICTED_BY_BAT_OR_PAGE 1 << (31 - 4)
#define DSISR_FLAG_DABRMatch 1 << (31 - 9)

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#pragma once
#include <coreinit/thread.h>
#include <cstdint>
#define IDLE_THREAD_ID_CORE_0 0x7001
#define IDLE_THREAD_ID_CORE_1 0x7002
#define IDLE_THREAD_ID_CORE_2 0x7003
#define IDLE_THREAD_CORE_0 ((OSThread *) 0x100)
#define IDLE_THREAD_CORE_1 ((OSThread *) 0x200)
#define IDLE_THREAD_CORE_2 ((OSThread *) 0x300)
#define IDLE_THREAD_LIST_END ((OSThread *) 0x400)
#define END_OF_LIST_THREAD ((OSThread *) 0xFFFFFFFF)
#define GET_CORE_FROM_IDLE_THREAD(thread) ((uint32_t) thread >> 8 & 3) - 1;
#define DEFAULT_THREAD_ID 0x8000
#define IS_IDLE_THREAD(thread) (((uint32_t) thread & ~0x300) == 0)
#define GET_NEXT_IDLE_THREAD(thread) (OSThread *) (((uint32_t) thread & 0x300) + 0x100)
#define GET_IDLE_THREAD_BY_CORE(coreOfThread) (OSThread *) ((coreOfThread * 0x100) + 0x100);

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#pragma once
#include <cstdint>
#define GDBStub_MasterCore ((uint32_t(*)(void))(0x101C400 + 0x02036bc8 - 0x02000000))
#define FlushFPUContext ((void (*)(void))(0x101C400 + 0x0203ee5c - 0x02000000))
#define __OSSetAndLoadContextDebugger ((void (*)(OSContext *))(0x101C400 + 0x02008188 - 0x02000000))
extern "C" uint32_t in_TBLr();

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#include "GDB_Commands.h"
#include "GDBDParseUtils.h"
#include "GDBThreadDefines.h"
#include "GDBUtils.h"
#include "GDB_IO.h"
#include "MasterAgent_RegMemReadWrite.h"
#include "MasterAgent_ThreadUtils.h"
#include "imports.h"
#include "utils/IOUtils.h"
#include <cerrno>
#include <coreinit/debug.h>
#include <coreinit/dynload.h>
#include <cstdint>
#include <cstdio>
#include <cstring>
#include <string_view>
#include <wups/function_patching.h>
static char sGDBQueryStringBuffer[100] = {};
static char sOutPaginationBuffer[IO_BUFFER_CAPACITY - 4] = {};
void qSupported(const char *packet) {
gIsDebuggerPresent = 1;
#ifdef SHOW_DRIVER_THREADS
gGDBGHSShowDrvrThreads = 1;
#endif
DAT_100d1378 = DAT_100d1378 + 1;
gTimerKernelCallbackLastRun = in_TBLr() + g100msInTicks;
MasterAgent_IOInit();
MasterAgent_IOPutString("PacketSize=");
snprintf(sGDBQueryStringBuffer, sizeof(sGDBQueryStringBuffer), "%x", IO_BUFFER_CAPACITY);
MasterAgent_IOPutString(sGDBQueryStringBuffer);
MasterAgent_IOPutString(";qXfer:features:read+;qXfer:threads:read+;swbreak+;hwbreak+");
MasterAgent_IOPutString(";COSVer=");
snprintf(sGDBQueryStringBuffer, sizeof(sGDBQueryStringBuffer), "%d", 21301);
MasterAgent_IOPutString(sGDBQueryStringBuffer);
MasterAgent_IOSendEx(false);
}
void qOffsets(const char *packet) {
OSDynLoad_InternalData *rplIterator = *(reinterpret_cast<OSDynLoad_InternalData **>(0x10081018));
OSDynLoad_NotifyData *rpl = nullptr;
for (; rplIterator != nullptr; rplIterator = rplIterator->next) {
if (!rplIterator->notifyData->name || std::string_view(rplIterator->notifyData->name).ends_with("rpx")) {
rpl = rplIterator->notifyData;
break;
}
}
if (rpl != nullptr) {
MasterAgent_IOInit();
snprintf(sGDBQueryStringBuffer, sizeof(sGDBQueryStringBuffer), "TextSeg=%08X;DataSeg=%08X", rpl->textAddr, rpl->dataAddr);
MasterAgent_IOPutString(sGDBQueryStringBuffer);
MasterAgent_IOSendEx(false);
} else {
MasterAgent_PutPacket("", false);
}
}
static char sLibrariesReadBuffer[IO_BUFFER_CAPACITY] = {};
bool qXferLibrariesRead(const char *packet) {
char *charPtr = (char *) packet;
uint32_t read_offset = 0;
uint32_t read_length = 0;
if (charPtr[0] != '\0') {
read_offset = gdb_getint(&charPtr);
charPtr++;
} else {
OSReport("WARNING: qXferLibrariesRead failed to read offset.\n");
}
if (charPtr[0] != '\0') {
read_length = gdb_getint(&charPtr);
} else {
OSReport("WARNING: qXferLibrariesRead failed to read length.\n");
}
if (((read_length * 2) + 1) > (IO_BUFFER_CAPACITY - 4)) {
read_length = ((IO_BUFFER_CAPACITY - 4) / 2) - 1;
}
MasterAgent_IOInit();
if (GDBqXfer_libraries_read(read_offset, read_length + 1, sLibrariesReadBuffer) == 0) {
MasterAgent_IOPutString("l");
DAT_100d1374 = 0;
} else {
MasterAgent_IOPutString("m");
}
MasterAgent_IOPutStringAsHex(sLibrariesReadBuffer);
MasterAgent_IOSendEx(false);
return true;
}
bool qXferFeaturesRead(const char *packet) {
auto *annexPtr = (char *) packet;
char *annexEnd = annexPtr;
while (annexEnd[0] != '\0' && annexEnd[0] != ':') {
annexEnd++;
}
annexEnd[0] = '\0';
auto *charPtr = annexEnd + 1;
if (strncmp(annexPtr, "target.xml", 10) == 0) {
uint32_t read_offset = 0;
uint32_t read_length = 0;
if (charPtr[0] != '\0') {
read_offset = gdb_getint(&charPtr);
charPtr++;
} else {
OSReport("WARNING: qXferFeaturesRead failed to read offset.\n");
}
if (charPtr[0] != '\0') {
read_length = gdb_getint(&charPtr);
} else {
OSReport("WARNING: qXferFeaturesRead failed to read length.\n");
}
if (read_length == 0 || read_offset >= GDBTargetXML.size()) {
MasterAgent_PutPacket("l", false);
} else {
auto paginated_str = GDBTargetXML.substr(read_offset, read_length);
memset(sOutPaginationBuffer, 0, sizeof(sOutPaginationBuffer));
if (paginated_str.size() < sizeof(sOutPaginationBuffer)) {
memcpy(sOutPaginationBuffer, paginated_str.data(), paginated_str.size());
} else {
OSReport("WARN: qXferFeaturesRead tried to overflow sOutPaginationBuffer!\n");
}
MasterAgent_IOInit();
MasterAgent_IOPutString((paginated_str.size() == read_length) ? "m" : "l");
MasterAgent_IOPutString(sOutPaginationBuffer);
MasterAgent_IOSendEx(false);
}
return true;
}
return false;
}
void qXferThreadRead(const char *packet) {
auto *charPtr = (char *) packet;
uint32_t read_offset = 0;
uint32_t read_length = 0;
if (charPtr[0] != '\0') {
read_offset = gdb_getint(&charPtr);
charPtr++;
} else {
OSReport("WARNING: qXferThreadRead failed to read offset.\n");
}
if (charPtr[0] != '\0') {
read_length = gdb_getint(&charPtr);
} else {
OSReport("WARNING: qXferThreadRead failed to read length.\n");
}
if (read_length == 0) {
MasterAgent_PutPacket("l", false);
return;
}
int32_t index = 0;
InitThreadInfoBuffer();
PutStringIntoThreadInfoBuffer(R"(<?xml version="1.0"?> <threads>)");
while (true) {
auto *thread = MasterAgent_GetIndexedThreadID(index);
if (thread == (OSThread *) 0xFFFFFFFF) {
break;
}
auto threadID = MasterAgent_GetThreadID(thread);
uint32_t core;
const char *threadName;
char threadNameOnStack[0x18];
if (thread == IDLE_THREAD_CORE_0) {
core = 0;
threadName = "Idle Core 0";
} else if (thread == IDLE_THREAD_CORE_1) {
core = 1;
threadName = "Idle Core 1";
} else if (thread == IDLE_THREAD_CORE_2) {
core = 2;
threadName = "Idle Core 2";
} else {
core = thread->context.upir;
threadName = thread->name;
if (!threadName) {
snprintf(threadNameOnStack, 0x18, "Thread 0x%8.8x", (uint32_t) thread);
threadName = threadNameOnStack;
}
}
snprintf(sGDBQueryStringBuffer, sizeof(sGDBQueryStringBuffer), R"(<thread id="%X" core="%d" name=")", threadID, core);
PutStringIntoThreadInfoBuffer(sGDBQueryStringBuffer);
PutXMLEscapedStringIntoThreadInfoBuffer(threadName);
PutStringIntoThreadInfoBuffer("\">");
PutXMLEscapedStringIntoThreadInfoBuffer(MasterAgent_ThreadExtraInfo(thread));
PutStringIntoThreadInfoBuffer("</thread>");
index++;
}
PutStringIntoThreadInfoBuffer("</threads>");
std::string_view resulBufAsView(GetThreadInfoBuffer());
if (read_offset >= resulBufAsView.size()) {
MasterAgent_PutPacket("l", false);
} else {
auto paginated_str = resulBufAsView.substr(read_offset, read_length);
memset(sOutPaginationBuffer, 0, sizeof(sOutPaginationBuffer));
if (paginated_str.size() < sizeof(sOutPaginationBuffer)) {
memcpy(sOutPaginationBuffer, paginated_str.data(), paginated_str.size());
} else {
OSReport("WARN: qXferThreadRead tried to overflow sOutPaginationBuffer!\n");
}
MasterAgent_IOInit();
MasterAgent_IOPutString((paginated_str.size() == read_length) ? "m" : "l");
MasterAgent_IOPutString(sOutPaginationBuffer);
MasterAgent_IOSendEx(false);
}
}
void gdb_vpacket(const char *packet) {
auto packetAsString = (char *) packet;
if (strcmp(packetAsString, "vCont?") == 0) {
MasterAgent_PutPacket("vCont;c;C;s;S;", false);
return;
}
if (strcmp(packetAsString, "vCont;c") == 0) {
gdb_continue("c");
return;
}
if (strncmp(packetAsString, "vGetRegs;", 9) == 0) {
gdb_vgetregisters(&packetAsString[9]);
return;
}
if (strncmp(packetAsString, "vCont;", 6) != 0) {
MasterAgent_PutPacket("", false);
return;
}
packetAsString = &packetAsString[6];
for (uint32_t i = 0; i < 3; i++) {
gCoreData[i].flag = GDBFLAGS_GDBSTOP;
gCoreData[i].nextSignal__ = GDBSIGNAL_SIG0;
}
bool stepDone = false;
uint32_t result = 0;
while (true) {
if (packetAsString[0] == '\0') {
if (result == 0) {
gGDBStub_main_state = GDBMAINSTATE_VCONT;
}
MasterAgent_SendResult(result);
return;
}
auto packetType = packetAsString[0];
if (packetType == 'C' || packetType == 'c' || packetType == 'S' || packetType == 's') {
packetAsString++;
GDB_SIGNAL signal = GDBSIGNAL_SIG0;
GDBStub_GDBFlags flag;
if (packetType == 'C' || packetType == 'S') {
signal = (GDB_SIGNAL) gdb_getint(&packetAsString);
}
if (packetType == 'C' || packetType == 'c') {
if (!stepDone) {
flag = GDBFLAGS_GDBCONT;
} else {
flag = GDBFLAGS_GDBSTOP;
}
} else {
flag = GDBFLAGS_GDBSTEP;
}
if (packetAsString[0] == '\0' || packetAsString[0] == ';') {
for (uint32_t i = 0; i < gCoreCount; i++) {
if (gCoreData[i].flag == GDBFLAGS_GDBSTOP) {
gCoreData[i].signal = GDBSIGNAL_RESUME;
if (flag == GDBFLAGS_GDBSTEP) {
stepDone = true;
}
gCoreData[i].flag = flag;
gCoreData[i].nextSignal__ = signal;
}
}
} else if (packetAsString[0] == ':') {
packetAsString++;
auto *thread = gdb_get_pid_tid(&packetAsString);
bool found = false;
for (uint32_t i = 0; i < gCoreCount; i++) {
auto *coreDataForI = &gCoreData[i];
if (coreDataForI->stoppedThread == thread) {
coreDataForI->signal = GDBSIGNAL_RESUME;
if (flag == GDBFLAGS_GDBSTEP) {
stepDone = true;
}
coreDataForI->flag = flag;
coreDataForI->nextSignal__ = signal;
auto MSR = MasterAgent_GetRegister32(coreDataForI, coreDataForI->stoppedContext, GDB_REGISTER_MSR);
if ((MSR & MSR_BIT_SE) != 0) {
result = MasterAgent_SetRegister32(coreDataForI, coreDataForI->stoppedContext, GDB_REGISTER_MSR, MSR & ~MSR_BIT_SE);
}
found = true;
}
}
if (!found) {
OSReport("WARN: gdb_vpacket Core which runs thread %08x not found\n", thread);
MasterAgent_SendResult(EPERM);
return;
}
}
} else {
OSReport("WARN: gdb_vpacket invalid packet type. %s\n", packetAsString);
MasterAgent_SendResult(EINVAL);
return;
}
if (packetAsString[0] == ';') {
packetAsString++;
}
}
}
static bool gdb_sendmemory(const char *packet) {
auto *intPtr = (char *) packet;
auto addr = gdb_getint(&intPtr);
if (intPtr[0] != ',') {
MasterAgent_SendResult(EINVAL);
return true;
}
intPtr++;
auto size = gdb_getint(&intPtr);
MasterAgent_IOInit();
auto readResult = gdb_mem2hex(addr, size);
if (readResult == 0) {
MasterAgent_IOSendEx(false);
} else {
MasterAgent_SendResult(EIO);
}
return true;
}
static void gdb_sendregister(const char *packet) {
auto *intPtr = (char *) (packet);
auto regId = gdb_getint(&intPtr);
if (regId > 0xdb) {
MasterAgent_SendResult(EINVAL);
return;
}
MasterAgent_IOInit();
if ((regId >= GDB_REGISTER_F0 && regId <= GDB_REGISTER_F31) ||
(regId >= GDB_REGISTER_PS0 && regId <= GDB_REGISTER_PS31)) {
auto res = MasterAgent_GetRegister64(gGDBCurCoreInfo, gGDBCurCoreInfo->currentContext, regId);
MasterAgent_IOPutHex64(res);
} else {
auto res = MasterAgent_GetRegister32(gGDBCurCoreInfo, gGDBCurCoreInfo->currentContext, regId);
MasterAgent_IOPutHex32(res);
}
MasterAgent_IOSendEx(false);
}
DECL_FUNCTION(void, MasterAgent_ProcessPacket, const char *packet) {
#ifdef PACKET_LOGGING
OSReport("Process packet \"%s\"\n", packet);
#endif
auto prefix = packet[0];
if (prefix == 'v') {
gdb_vpacket(packet);
return;
}
if (prefix == 'm') {
gdb_sendmemory(&packet[1]);
return;
} else if (prefix == 'p') {
gdb_sendregister(&packet[1]);
return;
} else if (prefix == 'q') {
auto *charPtr = (char *) (&packet[1]);
if (strncmp(charPtr, "Supported:", 10) == 0) {
qSupported(&charPtr[10]);
return;
} else if (strncmp(charPtr, "Xfer:", 5) == 0) {
charPtr = (char *) (&charPtr[5]);
if (strncmp(charPtr, "threads:read::", 14) == 0) {
qXferThreadRead(&charPtr[14]);
return;
} else if (strncmp(charPtr, "features:read:", 14) == 0) {
if (qXferFeaturesRead(&charPtr[14])) {
return;
}
} else if (strncmp(charPtr, "libraries:read::", 16) == 0) {
if (qXferLibrariesRead(&charPtr[16])) {
return;
}
}
} else if (strncmp(charPtr, "Offsets", 7) == 0) {
qOffsets(&charPtr[7]);
return;
}
}
real_MasterAgent_ProcessPacket(packet);
}
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_ProcessPacket, (0x3201C400 + (0x0203e4c4 - 0x02000000)), (0x101C400 + (0x0203e4c4 - 0x02000000)), WUPS_FP_TARGET_PROCESS_ALL);

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#pragma once
#include <string_view>
static constexpr std::string_view GDBTargetXML = R"(<?xml version="1.0"?>
<!DOCTYPE target SYSTEM "gdb-target.dtd">
<target version="1.0">
<architecture>powerpc:common</architecture>
<feature name="org.gnu.gdb.power.core">
<reg name="r0" bitsize="32" type="uint32"/>
<reg name="r1" bitsize="32" type="uint32"/>
<reg name="r2" bitsize="32" type="uint32"/>
<reg name="r3" bitsize="32" type="uint32"/>
<reg name="r4" bitsize="32" type="uint32"/>
<reg name="r5" bitsize="32" type="uint32"/>
<reg name="r6" bitsize="32" type="uint32"/>
<reg name="r7" bitsize="32" type="uint32"/>
<reg name="r8" bitsize="32" type="uint32"/>
<reg name="r9" bitsize="32" type="uint32"/>
<reg name="r10" bitsize="32" type="uint32"/>
<reg name="r11" bitsize="32" type="uint32"/>
<reg name="r12" bitsize="32" type="uint32"/>
<reg name="r13" bitsize="32" type="uint32"/>
<reg name="r14" bitsize="32" type="uint32"/>
<reg name="r15" bitsize="32" type="uint32"/>
<reg name="r16" bitsize="32" type="uint32"/>
<reg name="r17" bitsize="32" type="uint32"/>
<reg name="r18" bitsize="32" type="uint32"/>
<reg name="r19" bitsize="32" type="uint32"/>
<reg name="r20" bitsize="32" type="uint32"/>
<reg name="r21" bitsize="32" type="uint32"/>
<reg name="r22" bitsize="32" type="uint32"/>
<reg name="r23" bitsize="32" type="uint32"/>
<reg name="r24" bitsize="32" type="uint32"/>
<reg name="r25" bitsize="32" type="uint32"/>
<reg name="r26" bitsize="32" type="uint32"/>
<reg name="r27" bitsize="32" type="uint32"/>
<reg name="r28" bitsize="32" type="uint32"/>
<reg name="r29" bitsize="32" type="uint32"/>
<reg name="r30" bitsize="32" type="uint32"/>
<reg name="r31" bitsize="32" type="uint32"/>
<reg name="pc" bitsize="32" type="code_ptr" regnum="64"/>
<reg name="msr" bitsize="32" type="uint32"/>
<reg name="cr" bitsize="32" type="uint32"/>
<reg name="lr" bitsize="32" type="code_ptr"/>
<reg name="ctr" bitsize="32" type="uint32"/>
<reg name="xer" bitsize="32" type="uint32"/>
</feature>
<feature name="org.gnu.gdb.power.fpu">
<reg name="f0" bitsize="64" type="ieee_double" regnum="32"/>
<reg name="f1" bitsize="64" type="ieee_double"/>
<reg name="f2" bitsize="64" type="ieee_double"/>
<reg name="f3" bitsize="64" type="ieee_double"/>
<reg name="f4" bitsize="64" type="ieee_double"/>
<reg name="f5" bitsize="64" type="ieee_double"/>
<reg name="f6" bitsize="64" type="ieee_double"/>
<reg name="f7" bitsize="64" type="ieee_double"/>
<reg name="f8" bitsize="64" type="ieee_double"/>
<reg name="f9" bitsize="64" type="ieee_double"/>
<reg name="f10" bitsize="64" type="ieee_double"/>
<reg name="f11" bitsize="64" type="ieee_double"/>
<reg name="f12" bitsize="64" type="ieee_double"/>
<reg name="f13" bitsize="64" type="ieee_double"/>
<reg name="f14" bitsize="64" type="ieee_double"/>
<reg name="f15" bitsize="64" type="ieee_double"/>
<reg name="f16" bitsize="64" type="ieee_double"/>
<reg name="f17" bitsize="64" type="ieee_double"/>
<reg name="f18" bitsize="64" type="ieee_double"/>
<reg name="f19" bitsize="64" type="ieee_double"/>
<reg name="f20" bitsize="64" type="ieee_double"/>
<reg name="f21" bitsize="64" type="ieee_double"/>
<reg name="f22" bitsize="64" type="ieee_double"/>
<reg name="f23" bitsize="64" type="ieee_double"/>
<reg name="f24" bitsize="64" type="ieee_double"/>
<reg name="f25" bitsize="64" type="ieee_double"/>
<reg name="f26" bitsize="64" type="ieee_double"/>
<reg name="f27" bitsize="64" type="ieee_double"/>
<reg name="f28" bitsize="64" type="ieee_double"/>
<reg name="f29" bitsize="64" type="ieee_double"/>
<reg name="f30" bitsize="64" type="ieee_double"/>
<reg name="f31" bitsize="64" type="ieee_double"/>
<reg name="fpscr" bitsize="32" group="float" regnum="70"/>
</feature>
</target>)";
void qSupported(const char *packet);
void qXferThreadRead(const char *packet);
bool qXferLibrariesRead(const char *packet);
bool qXferFeaturesRead(const char *packet);
void qOffsets(const char *packet);
#define gdb_continue ((void (*)(const char *packet))(0x101C400 + 0x0203d11c - 0x02000000))
#define gdb_vgetregisters ((void (*)(const char *packet))(0x101C400 + 0x0203dfb4 - 0x02000000))
#define gdb_get_pid_tid ((OSThread * (*) (char **input))(0x101C400 + 0x0203d26c - 0x02000000))
#define GDBqXfer_libraries_read ((uint32_t(*)(uint32_t, int32_t, char *))(0x101C400 + 0x0203d3fc - 0x02000000))

328
src/stub/GDB_IO.cpp Normal file
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#include "GDB_IO.h"
#include "GDBUtils.h"
#include "imports.h"
#include <coreinit/core.h>
#include <coreinit/debug.h>
#include <cstring>
#include <wups/function_patching.h>
static const char *sHexChars = "0123456789abcdef";
static int32_t gIOOutputOffset = 0;
int32_t gGDBCharsInIOBuffer = 0;
int32_t gGDBCharsOfIOBufferConsumed = 0;
char gIOBuffer[IO_BUFFER_CAPACITY] = {};
char gIOOutBuffer[IO_BUFFER_CAPACITY] = {};
static char sGDBCharUndoGetBuffer = '\0';
void ResetIOOffsets() {
gIOOutputOffset = 0;
gGDBCharsInIOBuffer = 0;
gGDBCharsOfIOBufferConsumed = 0;
memset(gIOBuffer, 0, sizeof(gIOBuffer));
memset(gIOOutBuffer, 0, sizeof(gIOOutBuffer));
sGDBCharUndoGetBuffer = '\0';
}
// 0x02039158
DECL_FUNCTION(void, MasterAgent_IOInit) {
gIOOutputOffset = 0;
}
// 0x0203a76c
DECL_FUNCTION(int32_t, MasterAgent_IOCurrentIndex) {
return gIOOutputOffset;
}
// 0x0203a778
DECL_FUNCTION(int32_t, MasterAgent_IORemaining) {
return (IO_BUFFER_CAPACITY - 4) - gIOOutputOffset;
}
// 0x0203a788
DECL_FUNCTION(void, MasterAgent_IORestoreIndex, int32_t index) {
gIOOutputOffset = index;
}
// 0x0203a758
DECL_FUNCTION(char *, MasterAgent_IOCurrentBufferPointer) {
return &gIOOutBuffer[gIOOutputOffset];
}
// 0x02039168
DECL_FUNCTION(void, MasterAgent_IOPutChar, char curChar) {
if ((IO_BUFFER_CAPACITY - 5) < gIOOutputOffset) {
return;
}
gIOOutBuffer[gIOOutputOffset] = curChar;
gIOOutputOffset++;
}
// 0x0203a7ec
DECL_FUNCTION(void, MasterAgent_IOPutHex4, uint8_t val) {
if ((IO_BUFFER_CAPACITY - 5) < gIOOutputOffset) {
return;
}
gIOOutBuffer[gIOOutputOffset] = sHexChars[val & 0xf];
gIOOutputOffset++;
}
// 0x0203a794
DECL_FUNCTION(void, MasterAgent_IOPutHex8, uint8_t val) {
if (gIOOutputOffset < (IO_BUFFER_CAPACITY - 4 - 1)) {
gIOOutBuffer[gIOOutputOffset] = sHexChars[(val >> 4) & 0xf];
gIOOutBuffer[gIOOutputOffset + 1] = sHexChars[val & 0xf];
gIOOutputOffset += 2;
} else {
if (gIOOutputOffset < (IO_BUFFER_CAPACITY - 4)) {
gIOOutBuffer[gIOOutputOffset] = 'f';
}
}
}
// 0x0203a884
DECL_FUNCTION(void, MasterAgent_IOPutHex16, uint16_t value) {
if (gIOOutputOffset < (IO_BUFFER_CAPACITY - 4 - 3)) {
gIOOutBuffer[gIOOutputOffset] = sHexChars[(value >> 0xc) & 0xf];
gIOOutBuffer[gIOOutputOffset + 1] = sHexChars[(value >> 0x8) & 0xf];
gIOOutBuffer[gIOOutputOffset + 2] = sHexChars[(value >> 0x4) & 0xf];
gIOOutBuffer[gIOOutputOffset + 3] = sHexChars[(value >> 0x0) & 0xf];
gIOOutputOffset += 4;
} else {
auto offsetCpy = gIOOutputOffset;
while (offsetCpy < (IO_BUFFER_CAPACITY - 4)) {
gIOOutBuffer[offsetCpy] = 'f';
offsetCpy++;
}
}
}
// 0x02039190
DECL_FUNCTION(void, MasterAgent_IOPutHex32, uint32_t value) {
if (gIOOutputOffset < (IO_BUFFER_CAPACITY - 4 - 7)) {
gIOOutBuffer[gIOOutputOffset] = sHexChars[value >> 0x1c & 0xf];
gIOOutBuffer[gIOOutputOffset + 1] = sHexChars[value >> 0x18 & 0xf];
gIOOutBuffer[gIOOutputOffset + 2] = sHexChars[value >> 0x14 & 0xf];
gIOOutBuffer[gIOOutputOffset + 3] = sHexChars[value >> 0x10 & 0xf];
gIOOutBuffer[gIOOutputOffset + 4] = sHexChars[value >> 0xc & 0xf];
gIOOutBuffer[gIOOutputOffset + 5] = sHexChars[value >> 0x8 & 0xf];
gIOOutBuffer[gIOOutputOffset + 6] = sHexChars[value >> 0x4 & 0xf];
gIOOutBuffer[gIOOutputOffset + 7] = sHexChars[value >> 0x0 & 0xf];
gIOOutputOffset += 8;
} else {
auto offsetCpy = gIOOutputOffset;
while (offsetCpy < (IO_BUFFER_CAPACITY - 4)) {
gIOOutBuffer[offsetCpy] = 'f';
offsetCpy++;
}
}
}
// 0x0203a81c
DECL_FUNCTION(void, MasterAgent_IOPutStringAsHex, const char *str) {
uint32_t offset = 0;
char curChar = *str;
while (curChar != 0) {
if (gIOOutputOffset < (IO_BUFFER_CAPACITY - 4 - 1)) {
gIOOutBuffer[gIOOutputOffset] = sHexChars[curChar >> 4];
gIOOutBuffer[gIOOutputOffset + 1] = sHexChars[curChar & 0xf];
gIOOutputOffset += 2;
}
offset++;
curChar = str[offset];
}
}
void my_MasterAgent_PutPacket(const char *packetStr, bool checkPendingInputFirst);
DECL_FUNCTION(void, MasterAgent_IOSendEx, bool unknwn1) {
if ((IO_BUFFER_CAPACITY - 4) < gIOOutputOffset) {
return;
}
gIOOutBuffer[gIOOutputOffset] = '\0';
gIOOutputOffset++;
my_MasterAgent_PutPacket(gIOOutBuffer, unknwn1);
}
// Checked
DECL_FUNCTION(void, MasterAgent_IOPutString, const char *str) {
uint32_t offset = 0;
auto curChar = str[0];
while (curChar != '\0') {
auto uVar1 = gIOOutputOffset;
if (gIOOutputOffset < (IO_BUFFER_CAPACITY - 4)) {
uVar1 = gIOOutputOffset + 1;
gIOOutBuffer[gIOOutputOffset] = curChar;
}
offset = offset + 1;
gIOOutputOffset = uVar1;
curChar = str[offset];
}
}
extern "C" int32_t DK_PCharReadAsync(uint32_t channel_guess, uint32_t bufferSize, char *buffer);
// 0x02039250
DECL_FUNCTION(bool, MasterAgent_IOPendingInput) {
auto masterCore = GDBStub_MasterCore();
if (OSGetCoreId() == masterCore) {
if (gIsDebuggerInitializedOnCore[masterCore] != 0) {
if ((__OSGetAppFlags() & 0x80) == 0) {
gGDBCharsInIOBuffer = Waikiki_Read(gIOBuffer, IO_BUFFER_CAPACITY);
} else if (gGDBCharsInIOBuffer == gGDBCharsOfIOBufferConsumed) {
gGDBCharsInIOBuffer = DK_PCharReadAsync(1, IO_BUFFER_CAPACITY, gIOBuffer);
}
gGDBCharsOfIOBufferConsumed = 0;
if (gGDBCharsInIOBuffer < 1) {
gGDBCharsInIOBuffer = 0;
return false;
}
return true;
}
}
return false;
}
// Checked
DECL_FUNCTION(void, MasterAgent_IOUnGetChar, char charToUndo) {
sGDBCharUndoGetBuffer = charToUndo;
}
// 0x0203936c
DECL_FUNCTION(char, MasterAgent_IOGetChar) {
char result;
result = sGDBCharUndoGetBuffer;
if (sGDBCharUndoGetBuffer != '\0') {
sGDBCharUndoGetBuffer = '\0';
return result;
}
if (gGDBCharsInIOBuffer <= gGDBCharsOfIOBufferConsumed) {
while (!my_MasterAgent_IOPendingInput()) {
// wait for input...
}
if (gGDBCharsInIOBuffer <= gGDBCharsOfIOBufferConsumed) {
return -1;
}
}
auto offsetCpy = gGDBCharsOfIOBufferConsumed;
gGDBCharsOfIOBufferConsumed++;
return gIOBuffer[offsetCpy];
}
// Doubled capacity to be able to escape every single char, add 4 for the '$' prefix and '#00' checksum suffix
static char sWritePacketBuffer[(IO_BUFFER_CAPACITY * 2) + 4];
DECL_FUNCTION(void, MasterAgent_PutPacket, const char *packetStr, bool checkPendingInputFirst) {
#ifdef PACKET_LOGGING
OSReport("Send packet \"%s\"\n", packetStr);
#endif
uint32_t tryCount = 0;
bool ctrl_c_seen = false;
bool checkPendingInput = checkPendingInputFirst;
while (true) {
if (checkPendingInput) {
while (my_MasterAgent_IOPendingInput()) {
auto curChar = my_MasterAgent_IOGetChar();
if (curChar == '$') {
my_MasterAgent_IOUnGetChar((char) curChar);
return;
}
if (curChar == '\x03') {
ctrl_c_seen = true;
}
}
}
if (packetStr == nullptr) {
MasterAgent_IOWriteString("$#00");
} else {
memset(sWritePacketBuffer, 0, sizeof(sWritePacketBuffer));
auto *outBufferPtr = sWritePacketBuffer;
sWritePacketBuffer[0] = '$';
outBufferPtr++;
uint32_t checksum = 0;
uint32_t offset = 0;
auto curChar = packetStr[offset];
while (curChar != '\0') {
if ((curChar == '#' || curChar == '$' || curChar == '}' || curChar == '*')) {
outBufferPtr[0] = '}';
checksum += '}';
outBufferPtr[1] = (char) (curChar ^ 0x20);
checksum += (char) (curChar ^ 0x20);
outBufferPtr++;
} else {
outBufferPtr[0] = curChar;
checksum += curChar;
}
offset++;
outBufferPtr++;
curChar = packetStr[offset];
}
outBufferPtr[0] = '#';
outBufferPtr[1] = sHexChars[(checksum & 0xff) >> 4];
outBufferPtr[2] = sHexChars[checksum & 0xf];
MasterAgent_IOWriteString(sWritePacketBuffer);
}
do {
auto curChar = my_MasterAgent_IOGetChar();
if (((curChar == '+') || (curChar == '-')) || (curChar == '$')) {
if (ctrl_c_seen) {
gCoreData[GDBStub_MasterCore()].signal = GDBSIGNAL_SIGINT;
}
if (curChar == '+') {
return;
}
if (curChar == '-') {
tryCount++;
if (tryCount > 9) {
OSReport("MasterAgent_PutPacket: NACK received 10 times in a row\n");
return;
}
checkPendingInput = true;
break;
} else {
my_MasterAgent_IOUnGetChar((char) curChar);
return;
}
}
if (curChar == '\x03') {
ctrl_c_seen = true;
}
} while (!my_MasterAgent_IOPendingInput());
}
}
DECL_FUNCTION(void, MasterAgent_SendResult, uint32_t result) {
if (result == 0) {
MasterAgent_PutPacket("OK", false);
return;
}
MasterAgent_IOInit();
my_MasterAgent_IOPutChar(0x45);
my_MasterAgent_IOPutHex8((uint8_t) (result & 0xFF));
MasterAgent_IOSendEx(false);
}
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_IOInit, (0x3201C400 + (0x02039158 - 0x02000000)), (0x101C400 + (0x02039158 - 0x02000000)), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_IOCurrentIndex, (0x3201C400 + (0x0203a76c - 0x02000000)), (0x101C400 + (0x0203a76c - 0x02000000)), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_IORemaining, (0x3201C400 + (0x0203a778 - 0x02000000)), (0x101C400 + (0x0203a778 - 0x02000000)), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_IORestoreIndex, (0x3201C400 + (0x0203a788 - 0x02000000)), (0x101C400 + (0x0203a788 - 0x02000000)), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_IOCurrentBufferPointer, (0x3201C400 + (0x0203a758 - 0x02000000)), (0x101C400 + (0x0203a758 - 0x02000000)), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_IOPutChar, (0x3201C400 + (0x02039168 - 0x02000000)), (0x101C400 + (0x02039168 - 0x02000000)), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_IOPutHex4, (0x3201C400 + (0x0203a7ec - 0x02000000)), (0x101C400 + (0x0203a7ec - 0x02000000)), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_IOPutHex8, (0x3201C400 + (0x0203a794 - 0x02000000)), (0x101C400 + (0x0203a794 - 0x02000000)), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_IOPutHex16, (0x3201C400 + (0x0203a884 - 0x02000000)), (0x101C400 + (0x0203a884 - 0x02000000)), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_IOPutHex32, (0x3201C400 + (0x02039190 - 0x02000000)), (0x101C400 + (0x02039190 - 0x02000000)), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_IOPutStringAsHex, (0x3201C400 + (0x0203a81c - 0x02000000)), (0x101C400 + (0x0203a81c - 0x02000000)), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_IOSendEx, (0x3201C400 + (0x02039a28 - 0x02000000)), (0x101C400 + (0x02039a28 - 0x02000000)), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_IOPutString, (0x3201C400 + (0x0203b6b4 - 0x02000000)), (0x101C400 + (0x0203b6b4 - 0x02000000)), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_IOPendingInput, (0x3201C400 + (0x02039250 - 0x02000000)), (0x101C400 + (0x02039250 - 0x02000000)), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_IOUnGetChar, (0x3201C400 + (0x0203942c - 0x02000000)), (0x101C400 + (0x0203942c - 0x02000000)), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_IOGetChar, (0x3201C400 + (0x0203936c - 0x02000000)), (0x101C400 + (0x0203936c - 0x02000000)), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_PutPacket, (0x3201C400 + (0x020394d8 - 0x02000000)), (0x101C400 + (0x020394d8 - 0x02000000)), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_SendResult, (0x3201C400 + (0x0203bafc - 0x02000000)), (0x101C400 + (0x0203bafc - 0x02000000)), WUPS_FP_TARGET_PROCESS_GAME_AND_MENU);

25
src/stub/GDB_IO.h Normal file
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#pragma once
#include "GDBDefines.h"
#include <coreinit/exception.h>
#include <cstdint>
void ResetIOOffsets();
// The MasterAgent_MainLoop still has a fixed buffer we need to replace before we
// can increase this value
#define IO_BUFFER_CAPACITY 0x800
#define MasterAgent_IOInit ((void (*)(void))(0x101C400 + 0x02039158 - 0x02000000))
#define MasterAgent_IOPutString ((void (*)(const char *str))(0x101C400 + 0x0203b6b4 - 0x02000000))
#define MasterAgent_IOSendEx ((void (*)(bool))(0x101C400 + 0x02039a28 - 0x02000000))
#define MasterAgent_PutPacket ((void (*)(const char *packetStr, bool checkPendingInputFirst))(0x101C400 + 0x020394d8 - 0x02000000))
#define MasterAgent_IOPutStringAsHex ((void (*)(const char *str))(0x101C400 + 0x0203a81c - 0x02000000))
#define MasterAgent_SendResult ((void (*)(uint32_t))(0x101C400 + 0x0203bafc - 0x02000000))
#define MasterAgent_PutPacket ((void (*)(const char *packetStr, bool checkPendingInputFirst))(0x101C400 + 0x020394d8 - 0x02000000))
#define MasterAgent_IOInit ((void (*)(void))(0x101C400 + 0x02039158 - 0x02000000))
#define MasterAgent_IOPutString ((void (*)(const char *str))(0x101C400 + 0x0203b6b4 - 0x02000000))
#define MasterAgent_IOPutHex32 ((void (*)(uint32_t value))(0x101C400 + 0x02039190 - 0x02000000))
#define MasterAgent_IOWriteString ((void (*)(const char *))(0x101C400 + 0x020394a8 - 0x02000000))
#define MasterAgent_IOPutHex64 ((void (*)(uint64_t))(0x101C400 + 0x0203b6f8 - 0x02000000))
#define gdb_mem2hex ((uint32_t(*)(uint32_t addr, uint32_t size))(0x101C400 + 0x0203bcec - 0x02000000))
#define Waikiki_Read ((int32_t(*)(char *buffer, uint32_t bufferSize))(0x101C400 + 0x0203f2f0 - 0x02000000))

5
src/stub/MasterAgent_RegMemReadWrite.h Normal file
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#pragma once
#define MasterAgent_GetRegister64 ((uint64_t(*)(GDBCoreInfo * curInfo, OSContext * context, uint32_t regId))(0x101C400 + 0x02039e60 - 0x02000000))
#define MasterAgent_GetRegister32 ((uint32_t(*)(GDBCoreInfo * curInfo, OSContext * context, uint32_t regId))(0x101C400 + 0x02038cf0 - 0x02000000))
#define MasterAgent_SetRegister32 ((uint32_t(*)(GDBCoreInfo * coreInfo, OSContext * context, uint32_t regId, uint32_t value))(0x101C400 + 0x02039ed0 - 0x02000000))

87
src/stub/MasterAgent_ThreadUtils.cpp Normal file
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#include "GDBThreadDefines.h"
#include "GDBUtils.h"
#include "imports.h"
#include <coreinit/thread.h>
#include <cstdio>
#include <wups/function_patching.h>
static char sSomeStringBuffer[100] = {};
DECL_FUNCTION(const char *, MasterAgent_ThreadExtraInfo, OSThread *thread) {
const char *result;
if (thread == IDLE_THREAD_CORE_0 || thread == IDLE_THREAD_CORE_1 || thread == IDLE_THREAD_CORE_2) {
if (thread == IDLE_THREAD_CORE_0) {
result = "core 0 *running priority = (32:32) name = Idle Core 0";
} else if (thread == IDLE_THREAD_CORE_1) {
result = "core 1 *running priority = (32:32) name = Idle Core 1";
} else {
result = "core 2 *running priority = (32:32) name = Idle Core 2";
}
} else {
GDBStub_MasterCore();
uint32_t coreOfThread;
if ((thread->attr & OS_THREAD_ATTRIB_AFFINITY_ANY) == OS_THREAD_ATTRIB_AFFINITY_CPU0) {
coreOfThread = 0;
} else if ((thread->attr & OS_THREAD_ATTRIB_AFFINITY_ANY) == OS_THREAD_ATTRIB_AFFINITY_CPU1) {
coreOfThread = 1;
} else if ((thread->attr & OS_THREAD_ATTRIB_AFFINITY_ANY) == OS_THREAD_ATTRIB_AFFINITY_CPU2) {
coreOfThread = 2;
} else {
coreOfThread = thread->context.upir;
}
uint32_t threadState;
threadState = thread->state;
auto *threadStateAsStr = "";
if (gCoreData[coreOfThread].state == GDBSTUB_STATE_HUNG) {
threadStateAsStr = "HUNG ";
}
if ((gGDBCurCoreInfo != nullptr) &&
(thread == gGDBStoppedCoreInfo->stoppedThread)) {
threadStateAsStr = "*";
}
auto threadReadyStr = "";
if ((threadState & OS_THREAD_STATE_READY) != 0) {
threadReadyStr = "ready ";
}
auto threadRunningStr = "";
if ((threadState & OS_THREAD_STATE_RUNNING) != 0) {
threadRunningStr = "running ";
}
auto threadWaitingStr = "";
if ((threadState & OS_THREAD_STATE_WAITING) != 0) {
threadWaitingStr = "waiting ";
}
auto threadMoribundStr = "";
if ((threadState & OS_THREAD_STATE_MORIBUND) != 0) {
threadMoribundStr = "moribund ";
}
auto threadDetachStr = "";
if ((thread->attr & OS_THREAD_ATTRIB_DETACHED) != 0) {
threadDetachStr = "detach ";
}
char threadNameOnStack[0x18];
auto *threadName = thread->name;
if (threadName == nullptr) {
snprintf(threadNameOnStack, 0x18, "Thread 0x%8.8x", (uint32_t) thread);
threadName = threadNameOnStack;
}
snprintf(sSomeStringBuffer, 100, "core %d %s%s%s%s%s%spriority = (%d:%d) name = %s",
coreOfThread,
threadStateAsStr,
threadRunningStr,
threadReadyStr,
threadWaitingStr,
threadMoribundStr,
threadDetachStr,
thread->priority,
thread->basePriority,
threadName);
result = sSomeStringBuffer;
}
return result;
}
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_ThreadExtraInfo, (0x3201C400 + (0x0203a548 - 0x02000000)), (0x101C400 + (0x0203a548 - 0x02000000)), WUPS_FP_TARGET_PROCESS_ALL);

5
src/stub/MasterAgent_ThreadUtils.h Normal file
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#pragma once
#define MasterAgent_GetIndexedThreadID ((OSThread * (*) (int32_t))(0x101C400 + 0x0203a3e0 - 0x02000000))
#define MasterAgent_GetThreadID ((uint32_t(*)(OSThread *))(0x101C400 + 0x0203a290 - 0x02000000))
#define MasterAgent_ThreadExtraInfo ((const char *(*) (OSThread *) )(0x101C400 + 0x0203a548 - 0x02000000))

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src/stub/MasterAgent_Utils.cpp Normal file
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#include "MasterAgent_Utils.h"
#include "GDBDefines.h"
#include "GDBUtils.h"
#include "imports.h"
#include "utils/kernel.h"
#include <cerrno>
#include <coreinit/debug.h>
#include <coreinit/memorymap.h>
#include <wups/function_patching.h>
DECL_FUNCTION(uint32_t, MasterAgent_PeekWord32, void *addr) {
uint32_t value = 0xbaadf00d;
if (OSIsAddressValid((uint32_t) &value)) {
KernelWrite((uint32_t) &value, addr, 4);
} else {
OSReport("MasterAgent_PeekWord32 invalid addr: %08X\n", addr);
}
return value;
}
DECL_FUNCTION(uint32_t, MasterAgent_PokeInstr, void *addr, uint32_t newInstruction) {
if (OSIsAddressValid((uint32_t) addr)) {
KernelWriteU32((uint32_t) addr, newInstruction);
for (uint32_t i = 0; i < 3; i++) {
if (gCoreData[i].state == GDBSTUB_STATE_STOPPED) {
if (i != GDBStub_MasterCore()) {
MasterAgent_FlushICBlock(&gCoreData[i], (uint32_t) addr);
}
}
}
} else {
OSReport("MasterAgent_PokeInstr invalid addr: %08X\n", addr);
return EINVAL;
}
return 0;
}
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_PeekWord32, (0x3201C400 + (0x0203881c - 0x02000000)), (0x101C400 + (0x0203881c - 0x02000000)), WUPS_FP_TARGET_PROCESS_ALL);
WUPS_MUST_REPLACE_PHYSICAL_FOR_PROCESS(MasterAgent_PokeInstr, (0x3201C400 + (0x020389cc - 0x02000000)), (0x101C400 + (0x020389cc - 0x02000000)), WUPS_FP_TARGET_PROCESS_ALL);

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src/stub/MasterAgent_Utils.h Normal file
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#pragma once
#define MasterAgent_FlushICBlock ((uint32_t(*)(GDBCoreInfo * curCoreInfo, uint32_t addr))(0x101C400 + 0x02038970 - 0x02000000))

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src/stub/helper.s Normal file
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.globl in_TBLr
in_TBLr:
mftb %r3,268
blr

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src/utils/IOUtils.cpp Normal file
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#include "IOUtils.h"
#include <cstdint>
#include <cstring>
#define THREAD_INFO_BUFFER_CAPACITY 0x10001
static char sThreadInfoBuffer[THREAD_INFO_BUFFER_CAPACITY] = {};
static uint32_t sThreadInfoBufferOffset = 0;
char *GetThreadInfoBuffer() {
sThreadInfoBuffer[sThreadInfoBufferOffset] = '\0';
return sThreadInfoBuffer;
}
void InitThreadInfoBuffer() {
memset(sThreadInfoBuffer, 0, sizeof(sThreadInfoBuffer));
sThreadInfoBufferOffset = 0;
}
bool PutStringIntoThreadInfoBuffer(const char *str) {
uint32_t offset = 0;
while (str[offset] != '\0') {
if (sThreadInfoBufferOffset < (THREAD_INFO_BUFFER_CAPACITY - 2)) {
sThreadInfoBuffer[sThreadInfoBufferOffset] = str[offset];
sThreadInfoBufferOffset++;
} else {
return false;
}
offset++;
}
return true;
}
bool PutCharIntoThreadInfoBuffer(char c) {
// we want to keep a null byte at the end
if (sThreadInfoBufferOffset < (THREAD_INFO_BUFFER_CAPACITY - 2)) {
sThreadInfoBuffer[sThreadInfoBufferOffset] = c;
sThreadInfoBufferOffset++;
} else {
return false;
}
return true;
}
void PutXMLEscapedStringIntoThreadInfoBuffer(const char *str) {
if (str != nullptr) {
const char *curPtr = str;
while (curPtr[0] != '\0') {
switch (curPtr[0]) {
case '<':
PutStringIntoThreadInfoBuffer("&lt;");
break;
case '>':
PutStringIntoThreadInfoBuffer("&gt;");
break;
case '&':
PutStringIntoThreadInfoBuffer("&amp;");
break;
case '"':
PutStringIntoThreadInfoBuffer("&quot;");
break;
case '\'':
PutStringIntoThreadInfoBuffer("&apos;");
break;
default:
PutCharIntoThreadInfoBuffer(curPtr[0]);
break;
}
curPtr++;
}
}
}

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#pragma once
char *GetThreadInfoBuffer();
void InitThreadInfoBuffer();
bool PutStringIntoThreadInfoBuffer(const char *str);
bool PutCharIntoThreadInfoBuffer(char curChar);
void PutXMLEscapedStringIntoThreadInfoBuffer(const char *str);

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#include <coreinit/cache.h>
#include <coreinit/debug.h>
#include <coreinit/memorymap.h>
#include <kernel/kernel.h>
void KernelWrite(uint32_t addr, const void *data, uint32_t length) {
uint32_t dst = OSEffectiveToPhysical(addr);
uint32_t src = OSEffectiveToPhysical((uint32_t) data);
if (dst == 0 || src == 0) {
OSReport("Attempted to read/write from 0 (phys). dst %08X src %08X\n", dst, src);
return;
}
KernelCopyData(dst, src, length);
DCFlushRange((void *) addr, length);
ICInvalidateRange((void *) addr, length);
}
void KernelWriteU32(uint32_t addr, uint32_t value) {
uint32_t dst = OSEffectiveToPhysical(addr);
uint32_t src = OSEffectiveToPhysical((uint32_t) &value);
KernelCopyData(dst, src, 4);
DCFlushRange((void *) addr, 4);
ICInvalidateRange((void *) addr, 4);
}
#define KiInitRendezvous ((void (*)(void *)) 0xfff097c4)
#define KiSendICIToOtherCores ((void (*)(uint32_t, uint32_t, uint32_t, uint32_t)) 0xfff052c8)
#define KiWaitRendezvous ((void (*)(void *, uint32_t)) 0xfff097e0)
void KeSetDABR(uint32_t addr, int32_t allCores, int32_t matchReads, int32_t matchWrite) {
auto maskedAddr = (addr & 0xfffffff8) | 4;
if (matchReads != 0) {
maskedAddr = maskedAddr | 5;
}
if (matchWrite != 0) {
maskedAddr = maskedAddr | 2;
}
asm volatile(
" mtspr 1013, %0 \n"
:
: "r"(maskedAddr)
:);
if (allCores != 0) {
register int r13 asm("r13");
KiInitRendezvous(reinterpret_cast<void *>(r13 + -0x72a0));
KiSendICIToOtherCores(5, maskedAddr, 0, 1);
KiWaitRendezvous(reinterpret_cast<void *>(r13 + -0x72a0), 7);
}
}
void KeSetIABR(uint32_t addr, int32_t allCores) {
auto maskedAddr = (addr & 0xfffffffc) | 3;
asm volatile(
" mtspr 1010, %0 \n"
:
: "r"(maskedAddr)
:);
if (allCores != 0) {
register int r13 asm("r13");
KiInitRendezvous(reinterpret_cast<void *>(r13 + -0x7290));
KiSendICIToOtherCores(10, maskedAddr, 0, 1);
KiWaitRendezvous(reinterpret_cast<void *>(r13 + -0x7290), 7);
}
}
void EnableIABRandDABRSupport() {
KernelPatchSyscall(0x4B, reinterpret_cast<uint32_t>(&KeSetDABR));
KernelPatchSyscall(0x4C, reinterpret_cast<uint32_t>(&KeSetIABR));
}
void DisableIABRandDABRSupport() {
// Restore original syscalls
KernelPatchSyscall(0x4B, 0xfff036a0);
KernelPatchSyscall(0x4C, 0xfff0370c);
}

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#pragma once
#include <cstdint>
void KernelWrite(uint32_t addr, const void *data, uint32_t length);
void KernelWriteU32(uint32_t addr, uint32_t value);
void EnableIABRandDABRSupport();
void DisableIABRandDABRSupport();

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#pragma once
#define PLUGIN_VERSION_EXTRA ""