This dir is suitable for stuff that doesn't fit the target tree, e.g. because
it also builds on hosted or otherwise. It also has a generic subfolder for
fallback C implementations so that not all archs need to provide asm files.
SOURCES should only contain "foo.c" where foo.c includes the specific
<arch>/foo.c files from the subdirs using the preprocessor. This way automatic
selection of asm versions or generic C verion is possible.
For the start, the thread support files are moved, since ASM threads can
be used on hosted platforms as well. Since core_sleep() remains platform
specific it's moved to the corresponding system.h headers.
Change-Id: Iebff272f3407a6eaafeb7656ceb0ae9eca3f7cb9
Core, codecs and plugins link it separately so this gets rid of SOURCES trickery.
Don't build it for hosted targets.
Change-Id: If15ef90e93cd218a4352ae8e89eea95d3122452f
Signals are by default executed on the user stack, i.e. the stack of
the currently active thread. This has two problems:
1) The stack size of the current stack is likely insufficient (unless
using sigaltstack threads) because our stack sizes are normally
below MINSIGSTKSIZE which is needed to deliver a signal.
2) Some of our asm code does nasty tricks with the stack pointer. When a
signal comes in during this bad things can happen, e.g. random memory
being overwritten or simply a crash.
Using a well defined stack fixes this. This is comparable with the
separate irq stack on native targets.
Mostly for the sake of reducing latency for audio servicing where other service
routines can take a long time to complete, leading to occasional drops of a
few samples, especially in recording, where they are fairly frequent.
One mystery that remains is GPIOA IRQ being interrupted causes strange
undefined instruction exceptions, most easily produced on my Fuze V2 with a
scrollwheel. Making GPIOA the top ISR for now, thus not interruptible, cures it.
SVC mode is used during the actual calls. Hopefully the SVC stack size is
sufficient. Prologue and epilogue code only uses the IRQ stack and is large
enough.
Any routine code that should not be interrupted should disable IRQ itself from
here on in.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31642 a1c6a512-1295-4272-9138-f99709370657
move prototypes to ascodec.h
move code to ascodec*.c
YPR0: use adc-as3514.c instead of duplicating it
TODO: merge as3514.h and ascodec.h ?
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31626 a1c6a512-1295-4272-9138-f99709370657
move adc_close() prototype to adc.h
don't duplicate prototypes of adc.h
remove license header and guards for a single include of another file or for empty content
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31623 a1c6a512-1295-4272-9138-f99709370657
implement button_init_device for ondio
include button.h to get prototypes
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31621 a1c6a512-1295-4272-9138-f99709370657
Only target-specific (list of SPI targets) go in spi-target.h
API go into spi.h
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31615 a1c6a512-1295-4272-9138-f99709370657
It failed to restore macsr to the expected default (FRAC/SAT) which caused DSP
functions like tone control filter calculation to fail (resulting in noise).
The FFT plugin was also affected.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31589 a1c6a512-1295-4272-9138-f99709370657
FreeBSD apparently sends a SET_ADDRESS first, which confused our code.
This patch fixes that, and also simplifies the connection handling a bit.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31582 a1c6a512-1295-4272-9138-f99709370657
