GCC 15 development branch provides an experimental support for Windows on ARM64, which will be officially released next year, according to latest news.
I tried to compile SDL2 with this new compiler but I got a tiny problem into SDL_assert.h because it couldn't find the right platform.
However, it has been easy to fix and I included it into this PR.
More details can be also found here:
https://learn.microsoft.com/en-us/cpp/intrinsics/debugbreak?view=msvc-170
avoids -Wformat warnings from mingw toolchains -- e.g.:
src/test/SDL_test_harness.c:581:37: warning: unknown conversion type character 'l' in format [-Wformat=]
(cherry picked from commit 49b6c24722)
HIDAPI's source code licensing says this:
```
HIDAPI can be used under one of three licenses.
1. The GNU General Public License, version 3.0, in LICENSE-gpl3.txt
2. A BSD-Style License, in LICENSE-bsd.txt.
3. The more liberal original HIDAPI license. LICENSE-orig.txt
The license chosen is at the discretion of the user of HIDAPI. For example:
1. An author of GPL software would likely use HIDAPI under the terms of the
GPL.
2. An author of commercial closed-source software would likely use HIDAPI
under the terms of the BSD-style license or the original HIDAPI license.
```
Since the original license in LICENSE-orig.txt is basically only clause 3 of
the zlib license (do not remove this notice from the source code), it makes
sense to switch to it, since it adds no new requirements to the user.
(Plus, it's extremely short and direct, which is always nice.)
The entire license:
```
HIDAPI - Multi-Platform library for
communication with HID devices.
Copyright 2009, Alan Ott, Signal 11 Software.
All Rights Reserved.
This software may be used by anyone for any reason so
long as the copyright notice in the source files
remains intact.
```
Fixes#9786.
(cherry picked from commit dd09d4b4ee)
This changes the `SDL_EVENTS_DISABLED` path's return value from SDL_DISABLE
to SDL_IGNORE to match expectations, but doesn't actually change the ABI,
since these two symbols are both zero.
Fixes https://github.com/libsdl-org/sdlwiki/issues/460
The public headers saw lots of cleanups, backporting from SDL3 docs, and
merging with the wiki.
The markdown files in docs/README-*.md were converted to Unix endlines.
Use memfd_create() to allocate the temporary SHM backing file in memory, and set the size with posix_fallocate(), which will return an error on insufficient space vs ftruncate(), which will silently succeed and allow a SIGBUS error to occur if the unbacked memory is accessed.
Additionally, make the legacy path more robust by unlinking the temp file, so it won't persist after close, and unmapping the shared memory buffer.
(cherry picked from commit 9bdb992925)
SDL_GetGamepadAxis() is a SDL3-specific name: SDL2 calls gamepads
"game controllers".
Fixes: d3c21666 "gamepad: Clarify range and direction of axes"
Signed-off-by: Simon McVittie <smcv@collabora.com>
It would be easy to assume that all APIs that reference
SDL_JOYSTICK_AXIS_MAX work the same way, but they do not: triggers
generally use the full signed 16-bit range in the lower-level joystick
API, but are normalized to be non-negative by the higher-level gamepad
API.
We also never said explicitly which direction is positive here.
Experimentally, it's right (X), down (Y), and pressed (triggers).
Resolves: https://github.com/libsdl-org/SDL/issues/8793
Signed-off-by: Simon McVittie <smcv@collabora.com>
(cherry picked from commit 059fb560ba)
The ARM926EJ-S Technical Reference Manual states:
> You can only access CP15 registers with MRC and MCR instructions in a
> privileged mode. CDP, LDC, STC, MCRR, and MRRC instructions, and unprivileged
> MRC or MCR instructions to CP15 cause the Undefined instruction exception to
> be taken.
Furthermore, `MCR p15, 0, <Rd>, c7, c10, 5` (later called Data Memory Barrier)
is not specified for the ARM926. Thus, SDL should not use these cache
instructions on ARMv5.
(cherry picked from commit 139a0931a3)
