Fix two bugs that occurred when viewing a memory range starting shortly
before 0xffffffff.
Bug 1: When there was at least one visible memory address at or after
0x0 none of the values would be displayed even when some of the
addresses were valid. This happened because the loop condition in
GetValues immediately returned false since m_address_range.first >
m_address_range.second, causing m_values to be empty. This in turn led
every address to be considered INVALID_MEMORY in UpdateColumns.
Bug 2: When m_address_range.second was equal to 0xffffffff GetValues
would enter an infinite loop. This happened because address would
overflow to 0 after printing the last value in the table, causing the
loop condition address <= m_address_range.second to be true forever.
There were three distinct mechanisms for signaling breakpoint changes in DolphinQt, and the wiring had room for improvement. The behavior of these signals has been consolidated into the new `Host::PPCBreakpointsChanged` signal, which can be emitted from anywhere in DolphinQt to properly update breakpoints everywhere in DolphinQt.
This improves a few things:
- For the `CodeViewWidget` and `MemoryViewWidget`, signals no longer need to propagate through the `CodeWidget` and `MemoryWidget` (respectively) to reach their destination (incoming or outgoing).
- For the `BreakpointWidget`, by self-triggering from its own signal, it no longer must manually call `Update()` after all of the emission sites.
- For the `BranchWatchDialog`, it now has one less thing it must go through the `CodeWidget` for, which is a plus.
Fixes dynamically changing dpi scaling.
Load resources from svg if possible.
Currently svg support is not in Qt build in Externals,
and image files need to be added later.
This fixes a problem I was having where using frame advance with the
debugger open would frequently cause panic alerts about invalid addresses
due to the CPU thread changing MSR.DR while the host thread was trying
to access memory.
To aid in tracking down all the places where we weren't properly locking
the CPU, I've created a new type (in Core.h) that you have to pass as a
reference or pointer to functions that require running as the CPU thread.
SPDX standardizes how source code conveys its copyright and licensing
information. See https://spdx.github.io/spdx-spec/1-rationale/ . SPDX
tags are adopted in many large projects, including things like the Linux
kernel.
