Commit Graph

70 Commits

Author SHA1 Message Date
Dimitri A
0e7ad1c367 gdbstub: Fix some bugs in IsMemoryBreak() and ServeBreak. Add workaround to let watchpoints break into GDB. (#4651)
* gdbstub: fix IsMemoryBreak() returning false while connected to client

As a result, the only existing codepath for a memory watchpoint hit to break into GDB (InterpeterMainLoop, GDB_BP_CHECK, ARMul_State::RecordBreak) is finally taken,
which exposes incorrect logic* in both RecordBreak and ServeBreak.

* a blank BreakpointAddress structure is passed, which sets r15 (PC) to NULL

* gdbstub: DynCom: default-initialize two members/vars used in conditionals

* gdbstub: DynCom: don't record memory watchpoint hits via RecordBreak()

For now, instead check for GDBStub::IsMemoryBreak() in InterpreterMainLoop and ServeBreak.

Fixes PC being set to a stale/unhit breakpoint address (often zero) when a memory watchpoint (rwatch, watch, awatch) is handled in ServeBreak() and generates a GDB trap.

Reasons for removing a call to RecordBreak() for memory watchpoints:
* The``breakpoint_data`` we pass is typed Execute or None. It describes the predicted next code breakpoint hit relative to PC;

* GDBStub::IsMemoryBreak() returns true if a recent Read/Write operation hit a watchpoint. It doesn't specify which in return, nor does it trace it anywhere. Thus, the only data we could give RecordBreak() is a placeholder BreakpointAddress at offset NULL and type Access. I found the idea silly, compared to simply relying on GDBStub::IsMemoryBreak().

There is currently no measure in the code that remembers the addresses (and types) of any watchpoints that were hit by an instruction, in order to send them to GDB as "extended stop information."
I'm considering an implementation for this.

* gdbstub: Change an ASSERT to DEBUG_ASSERT

I have never seen the (Reg[15] == last_bkpt.address) assert fail in practice, even after several weeks of (locally) developping various branches around GDB.  Only leave it inside Debug builds.
2019-03-15 16:31:06 +01:00
Dimitri ALBORA
8b800369ea gdbstub: only let Execute breakpoints write/restore BKPT opcodes into target memory 2019-02-06 19:07:35 +01:00
Lioncash
8435451093 kernel/thread: Make thread_id a 64-bit value
The kernel uses a 64-bit value for the thread ID, so we shouldn't be
using a 32-bit value.
2018-12-18 22:37:03 -05:00
Lioncash
474c745502 gdbstub: Silence value truncation warning within FpuWrite()
Previously this would cause an implicit truncation warning about
assigning a u64 value to a u32 value without an explicit cast.
2018-11-26 19:58:23 -05:00
Hedges
af42320021 GDBStub improvements:
- Add FPU support
- Fix access to TLS
Fix clang-format.
2018-11-13 15:44:20 +00:00
Lioncash
5484742fda core_cpu: Make Cpu scheduler instances unique_ptrs instead of shared_ptrs 2018-10-15 14:15:56 -04:00
Lioncash
baed7e1fba kernel/thread: Make all instance variables private
Many of the member variables of the thread class aren't even used
outside of the class itself, so there's no need to make those variables
public. This change follows in the steps of the previous changes that
made other kernel types' members private.

The main motivation behind this is that the Thread class will likely
change in the future as emulation becomes more accurate, and letting
random bits of the emulator access data members of the Thread class
directly makes it a pain to shuffle around and/or modify internals.
Having all data members public like this also makes it difficult to
reason about certain bits of behavior without first verifying what parts
of the core actually use them.

Everything being public also generally follows the tendency for changes
to be introduced in completely different translation units that would
otherwise be better introduced as an addition to the Thread class'
public interface.
2018-10-04 00:14:15 -04:00
Lioncash
cf9d6c6f52 kernel/process: Make data member variables private
Makes the public interface consistent in terms of how accesses are done
on a process object. It also makes it slightly nicer to reason about the
logic of the process class, as we don't want to expose everything to
external code.
2018-09-30 02:30:01 -04:00
Lioncash
16145e2f21 arm_interface: Add missing fpsr/tpidr members to the ThreadContext struct
Internally within the kernel, it also includes a member variable for the
floating-point status register, and TPIDR, so we should do the same here to match
it.

While we're at it, also fix up the size of the struct and add a static
assertion to ensure it always stays the correct size.
2018-09-30 02:29:57 -04:00
Lioncash
83377113bf memory: Dehardcode the use of fixed memory range constants
The locations of these can actually vary depending on the address space
layout, so we shouldn't be using these when determining where to map
memory or be using them as offsets for calculations. This keeps all the
memory ranges flexible and malleable based off of the virtual memory
manager instance state.
2018-09-24 22:16:03 -04:00
Jarek Syrylak
74f966404d Correct endianness of BKPT 2018-09-20 22:03:57 +01:00
Lioncash
b51e7e0288 arm_interface: Remove ARM11-isms from the CPU interface
This modifies the CPU interface to more accurately match an
AArch64-supporting CPU as opposed to an ARM11 one. Two of the methods
don't even make sense to keep around for this interface, as Adv Simd is
used, rather than the VFP in the primary execution state. This is
essentially a modernization change that should have occurred from the
get-go.
2018-09-18 03:20:04 -04:00
fearlessTobi
63c2e32e20 Port #4182 from Citra: "Prefix all size_t with std::" 2018-09-15 15:21:06 +02:00
Hedges
e2b74f6354 GDBStub works with both Unicorn and Dynarmic now (#941)
* GDBStub works with both Unicorn and Dynarmic now

* Tidy up
2018-08-06 22:01:24 -04:00
Lioncash
00f7e584ce gdbstub: Use type alias for breakpoint maps
Rather than having to type out the full std::map type signature, we can
just use a straightforward alias. While we're at it, rename
GetBreakpointList to GetBreakpointMap, which makes the name more
accurate. We can also get rid of unnecessary u64 static_casts, since
VAddr is an alias for a u64.
2018-08-05 16:41:22 -04:00
Lioncash
89c076b4b1 gdbstub: Move all file-static variables into the GDBStub namespace
Keeps everything under the same namespace. While we're at it, enclose
them all within an inner anonymous namespace.
2018-08-05 16:41:18 -04:00
Lioncash
ca96f8db4e gdbstub: Replace PAddr alias with VAddr
In all cases, a virtual address is being passed in, not a physical one.
2018-08-05 15:56:01 -04:00
Lioncash
bf45092c61 kernel: Move object class to its own source files
General moving to keep kernel object types separate from the direct
kernel code. Also essentially a preliminary cleanup before eliminating
global kernel state in the kernel code.
2018-08-01 23:34:42 -04:00
Lioncash
c945226973 gdbstub: Get rid of a few signed/unsigned comparisons
Ensures both operands in comparisons are the same signedness.
2018-07-19 15:27:01 -04:00
Hedges
e066bc75b9 More improvements to GDBStub (#653)
* More improvements to GDBStub
- Debugging of threads should work correctly with source and assembly level stepping and modifying registers and memory, meaning threads and callstacks are fully clickable in VS.
- List of modules is available to the client, with assumption that .nro and .nso are backed up by an .elf with symbols, while deconstructed ROMs keep N names.
- Initial support for floating point registers.

* Tidy up as requested in PR feedback

* Tidy up as requested in PR feedback
2018-07-12 20:22:59 -07:00
James Rowe
0d46f0df12 Update clang format 2018-07-02 21:45:47 -04:00
James Rowe
638956aa81 Rename logging macro back to LOG_* 2018-07-02 21:45:47 -04:00
Hedges
39fb3e362c GDB Stub Improvements (#508)
* GDB Stub should work now.

* Applied clang-format.

* Replaced htonll with swap64.

* Tidy up.
2018-06-06 00:20:47 -04:00
bunnei
a434fdcb10 core: Implement multicore support. 2018-05-10 19:34:46 -04:00
Lioncash
623d772476
core/gdbstub: Move logging macros to new fmt-compatible ones 2018-04-26 12:04:50 -04:00
N00byKing
ef875d6a35 Clean Warnings (?) 2018-03-19 17:07:08 +01:00
Lioncash
51ce224a96
gdbstub: Silence formatting specifier warnings 2018-02-14 01:50:01 -05:00
Rozlette
425a78ec1b gdbstub: Update registers and sizes for aarch64
This gets gdbstub working at least to the point where clients can
communicate with it.

What works:
- Reading/writing GPRegs
- Reading/writing memory
- Interrupting the emulated program and continuing

What does NOT work:
- Breakpoints. Sizes have been updated to u64, but support will need to be
  added in the interpreter for them to work.
- VRegs. Mostly because my gdb was having issues with 128-bit regs for
  some reason. However, the current u128 representation is a bit
  awkward to use and should probably be updated first.
2018-01-21 11:12:49 -06:00
James Rowe
096be16636 Format: Run the new clang format on everything 2018-01-20 16:45:11 -07:00
River City Ransomware
dd62f125c3 Fixes some cast warnings, partial port of citra #3064 (#106)
* Fixes some cast warnings, partially fixes citra #3064

* Converted casts to uint32_t to u32

* Ran clang-format
2018-01-19 18:01:41 -05:00
River City Ransomware
d05dc3f4dd Fix gdbstub typo, fixes Citra #3318
Core::System().GetInstance().IsPoweredOn() -> Core::System::GetInstance().IsPoweredOn()
2018-01-17 09:25:25 -05:00
bunnei
b172f0d770 arm: Remove SkyEye/Dyncom code that is ARMv6-only. 2018-01-02 22:24:12 -05:00
bunnei
b1d5db1cf6 Merge remote-tracking branch 'upstream/master' into nx
# Conflicts:
#	src/core/CMakeLists.txt
#	src/core/arm/dynarmic/arm_dynarmic.cpp
#	src/core/arm/dyncom/arm_dyncom.cpp
#	src/core/hle/kernel/process.cpp
#	src/core/hle/kernel/thread.cpp
#	src/core/hle/kernel/thread.h
#	src/core/hle/kernel/vm_manager.cpp
#	src/core/loader/3dsx.cpp
#	src/core/loader/elf.cpp
#	src/core/loader/ncch.cpp
#	src/core/memory.cpp
#	src/core/memory.h
#	src/core/memory_setup.h
2017-10-09 23:56:20 -04:00
Subv
7772fc0731 Memory: Remove all GetPointer usages from the GDB stub. 2017-10-04 11:33:32 -05:00
bunnei
3411883fe3 arm: Use 64-bit addressing in a bunch of places. 2017-09-30 14:28:53 -04:00
Huw Pascoe
a13ab958cb Fixed type conversion ambiguity 2017-09-30 09:34:35 +01:00
Mat M
0cb52ee74a Doxygen: Amend minor issues (#2593)
Corrects a few issues with regards to Doxygen documentation, for example:

- Incorrect parameter referencing.
- Missing @param tags.
- Typos in @param tags.

and a few minor other issues.
2017-02-26 17:58:51 -08:00
Jonathan Hao
c18cb1b192 Fix some warnings (#2399) 2017-01-04 13:48:29 -03:00
bunnei
e26fbfd1d7 core: Replace "AppCore" nomenclature with just "CPU". 2016-12-22 00:27:46 -05:00
bunnei
5ac5cbeab7 Address clang-format issues. 2016-12-21 23:48:14 -05:00
bunnei
232ef55c1a core: Consolidate core and system state, remove system module & cleanups. 2016-12-21 23:29:13 -05:00
Lioncash
38a964735f gdbstub: const correctness changes
Also uses size_t as the length indicator type, as is common with buffers.
2016-12-16 04:06:26 -05:00
Lioncash
ba20dd9b61 gdbstub: Remove global variable from public interface
Currently, this is only ever queried, so adding a function to check if the
server is enabled is more sensible.

If directly modifying this externally is ever desirable, it should be done
by adding a function to the interface, rather than exposing implementation
details directly.
2016-12-15 16:37:22 -05:00
Jannik Vogel
0aee903ada gdbstub: Remove unused include 2016-12-05 19:09:16 +01:00
Jannik Vogel
45d941d62e Support mingw cross-compile 2016-12-05 19:09:16 +01:00
James Rowe
c3ea6f4ddb Add mingw compile support 2016-11-13 23:50:46 -07:00
mailwl
3c37ee434a Small fix to let IDA see target.xml 2016-10-28 20:50:45 +03:00
Yuri Kunde Schlesner
f120e78b56 Remove special rules for Windows.h and library includes 2016-09-21 00:16:33 -07:00
Emmanuel Gil Peyrot
ebdae19fd2 Remove empty newlines in #include blocks.
This makes clang-format useful on those.

Also add a bunch of forgotten transitive includes, which otherwise
prevented compilation.
2016-09-21 11:15:47 +09:00
Emmanuel Gil Peyrot
dc8479928c Sources: Run clang-format on everything. 2016-09-18 09:38:01 +09:00