This function performs a more rigorous analysis of the mapped region by
checking continuity. So far all pages mapped in userpsace have been
contiguous, so the results are identical to gint[HWURAM].
Page size is now optionnaly provided in mmu_translate() and its
subfunctions; programs that use this function need to add a second NULL
parameter.
* Create an `src/3rdparty` folder for third-party code (to add the
Grisu2B alfogithm soon).
* Split the formatted printer into gint's kprint (src/kprint), its
extension and interface (include/gint/kprint.h), and its use in the
standard stdio functions (src/std/print.c).
* Slightly improve the interface of kformat_geometry() to avoid relying
on knowing format specifiers.
* Add a function to register more formatters, to allow floating-point
formatters without requiring them.
The repeat delays of getkey() are adjusted automatically, however a
repeat that is currently going on might be affected.
Also, repeat delays are always approximated as a whole number of
keyboard scans so an increase in scan frequency can impact the speed at
which repeats are emitted.
When switching to dynamic TLB the counting of mapped memory was no
longer required at boot time. This was restored weirdly for fx-CG 50 and
not at all for fx-9860G; this is now fixed.
This change moves the gint version declaration from a symbol in a
compile-time generated object file to a preprocessed header installed in
the library tree.
This makes it possible to determine the gint version statically from the
headers, which is much more robust in complex build systems that use
version information such as CMake's find_package().
Some very trivial applications might not require its symbols explicitly,
thus the need to force a dependency (otherwise OS interrupts such as the
KEYSC are not disabled and crash the handler very quickly).
This change adds a new TMU function timer_spinwait() which waits for a
timer to raise its UNF flag. This makes it possible to wait even when
interrupts are disabled.
This is used by the new CPG function sleep_us_spin() which waits for a
given delay without using interrupts. This is currently used in SPU
initialization.
* Specify a line height for the default fx-CG 50 font so that the height
returned by dsize() is correctly 9, not 11.
* Adjust vertical and horizontal alignment in dtext_opt() and
dprint_opt() by a full pixel (DTEXT_BOTTOM, DTEXT_RIGHT) and half a
pixel (DTEXT_MIDDLE, DTEXT_CENTER) to make sure that the specified
position is within rendered text (as in DTEXT_LEFT and TEXT_TOP) and
to improve centering of strings with odd width or odd height, for
which there is only one valid position.
This commit introduces custom character spacing with a new fxconv
parameter "char-spacing". Word spacing is also tied to the width of the
space character (0x20). This removes the need for special semantics on
the space character, but requires that its size be specified with gray
pixels for proportional fonts.
This also fixes problems with the size of spaces in dsize() not being
correlated with their size during rendering, since on fx-9860G topti
already used the glyph's with as word spacing.
Since fxconv changes but gint's Makefile does not track updates to
external tools, a full rebuild of gint is required past this commit.
This commit introduces a large architectural change. Unlike previous
models of the fx-9860G series, the G-III models have a new user RAM
address different from 8801c000. The purpose of this change is to
dynamically load GMAPPED functions to this address by querying the TLB,
and call them through a function pointer whose address is determined
when loading.
Because of the overhead of using a function pointer in both assembly and
C code, changes have been made to avoid GMAPPED functions altogether.
Current, only cpu_setVBR() and gint_inth_callback() are left, the second
being used specifically to enable TLB misses when needed.
* Add a .gint.mappedrel section for the function pointers holding
addresses to GMAPPED functions; add function pointers for
cpu_setVBR() and gint_inth_callback()
* Move rram to address 0 instead of the hardcoded 0x8801c000
* Load GMAPPED functions at their linked address + the physical address
user RAM is mapped, to and compute their function pointers
* Remove the GMAPPED macro since no user function needs it anymore
* Add section flags "ax" (code) or "aw" (data) to every custom .section
in assembler code, as they default to unpredictable values that can
cause the section to be marked NOLOAD by the linker
* Update the main kernel, TMU, ETMU and RTC interrupt handlers to use
the new indirect calling method
This is made possible by new MMU functions giving direct access to the
physical area behind any virtualized page.
* Add an mmu_translate() function to query the TLB
* Add an mmu_uram() function to access user RAM from P1
The exception catching mechanism has been modified to avoid the use of
GMAPPED functions altogether.
* Set SR.BL=0 and SR.IMASK=15 before calling exception catchers
* Move gint_exc_skip() to normal text ROM
* Also fix registers not being popped off the stack before a panic
The timer drivers have also been modified to avoid GMAPPED functions.
* Invoke timer_stop() through gint_inth_callback() and move it to ROM
* Move and expand the ETMU driver to span 3 blocks at 0xd00 (ETMU4)
* Remove the timer_clear() function by inlining it into the ETMU handler
(TCR is provided within the storage block of each timer)
* Also split src/timer/inth.s into src/timer/inth-{tmu,etmu}.s
Additionally, VBR addresses are now determined at runtime to further
reduce hardcoded memory layout addresses in the linker script.
* Determine fx-9860G VBR addresses dynamically from mmu_uram()
* Determine fx-CG 50 VBR addresses dynamically from mmu_uram()
* Remove linker symbols for VBR addresses
Comments and documentation have been updated throughout the code to
reflect the changes.
This change introduces a new getkey_repeat_filter() function that can be
used to individually accept, deny or delay repeat events for specific
keys and timings.
* Turn on GCC's -O3 for bopti files
* Remove the bopti_render_noclip() step
* Use rbox as early as possible to avoid moving memory around
* A lot of local grinding
* Defined the single-column single-position (SCSP) situation where a
single column of the input is blit on a single position of the VRAM.
Provided optimized assembly and a specialized bopti_render_scsp()
function.
* Improved the rendered by reducing the amount of computation and
clarifying the semantics of the rbox.
* Separated rbox setup from clipping by making bopti_render_clip() a
purely abstract superset of bopti_render_noclip().
This new mechanism allows an add-in to be restarted after exiting by
just never exiting in the first place, calling gint_osmenu() instead.
This makes sure that we can relaunch the add-in immediately, which is
normally possible through an option in the OS though no OS-independent
method of setting it is currently known.
Because this is gint_osmenu(), known pitfalls apply. On all platforms,
it is necessary to prepare the first frame before leaving. On fx-CG 50,
the inevitable display border is also there.
Disables spread spectrum by default so that the frequency estimations of
the CPG driver (notably used by the timer driver and libprof) are more
accurate.
This commit changes the interrupt handler arrangement to support the PRI
interrupt on SH3 (a gap is needed between 0xaa0 and its helper).
It also introduces the use of the _gint_inth_callback function for the
callback, which provides dynamic TLB during the interrupt, and revealed
a bug about IMASK not being set automatically on SH3.
Finally, it sets the interrupt settings of the RTC more conservatively,
by wiping RCR1 and the carry, alarm and periodic interrupt flags during
initialization and context restoration.
This change fixes very weird bugs first observed with the RTC, related
to IMASK not being updated when an interrupt occurs to avoid
re-interruption.
On SH4 there is a CPUOPM setting that automatically sets IMASK to the
level of the accepted interrupt, which is so exactly what every kernel
needs that I can't figure out why this isn't the only behavior.
Turns out on SH3 it's not even an option. This commit sets IMASK to 15
when accepting a callback on SH3. This most notably prevents the gray
engine from updating the screen so callbacks need to be made very short.
