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gint/src/core/syscalls.S

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core: better bootlog API and implementation * Now uses topti instead of fxlib for text (including MMU failure) * Fit .pretext into 4k for everything before MMU succeeds * A short version of sprintf() for dynamic messages * Support a driver function, status(), to allow early driver debug * Expose more useful platform information in <gint/mpu.h> * Expose the first of a few CASIOWIN syscalls
2019-03-06 14:32:51 +01:00
/*
** gint:core:syscalls - calls to CASIOWIN
**
core: add BFile syscalls
2019-07-04 18:15:13 +02:00
** This file can be seen as a list of everywhere gint relies on the
core: better bootlog API and implementation * Now uses topti instead of fxlib for text (including MMU failure) * Fit .pretext into 4k for everything before MMU succeeds * A short version of sprintf() for dynamic messages * Support a driver function, status(), to allow early driver debug * Expose more useful platform information in <gint/mpu.h> * Expose the first of a few CASIOWIN syscalls
2019-03-06 14:32:51 +01:00
** underlying OS. Although I wish to make gint free-standing, there are
core: add BFile syscalls
2019-07-04 18:15:13 +02:00
** still a few hard questions, namely:
core: better bootlog API and implementation * Now uses topti instead of fxlib for text (including MMU failure) * Fit .pretext into 4k for everything before MMU succeeds * A short version of sprintf() for dynamic messages * Support a driver function, status(), to allow early driver debug * Expose more useful platform information in <gint/mpu.h> * Expose the first of a few CASIOWIN syscalls
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** * MMU management, because doing it wrong might break the calculator.
** * Dynamic allocation, because we can't trash the system heap.
** * File system, because it's a mess and we might ruin the ROM.
*/
libc: implement malloc() etc. through syscalls Currently only used by libprof itself.
2019-07-16 21:17:32 +02:00
/* Dynamic allocation */
.global _malloc
.global _free
.global _calloc
.global _realloc
/* Bfile driver */
core: add BFile syscalls
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.global _BFile_Remove
.global _BFile_Create
.global _BFile_Open
.global _BFile_Close
core: add BFile_Size syscall
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.global _BFile_Size
core: add BFile syscalls
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.global _BFile_Write
.global _BFile_Read
core: add BFile_FindFirst, Next and Close syscalls The return code -1 noted in the BFile_FindFirst or BFile_FindNext is from test, which mean it could be possibles that they are negative error code from functions failing and not meaning that no file have been found, to be sure, the value IML_FILEERR_ENUMERATEEND from filebios.h in the fxlib need to be checked (and maybe defined in gint with a more meaningful name for user interactivity)
2020-01-13 23:09:18 +01:00
.global _BFile_FindFirst
.global _BFile_FindNext
.global _BFile_FindClose
core: better bootlog API and implementation * Now uses topti instead of fxlib for text (including MMU failure) * Fit .pretext into 4k for everything before MMU succeeds * A short version of sprintf() for dynamic messages * Support a driver function, status(), to allow early driver debug * Expose more useful platform information in <gint/mpu.h> * Expose the first of a few CASIOWIN syscalls
2019-03-06 14:32:51 +01:00
core, tmu: add gint_switch(), return to menu, and improve timer code * Add the gint_switch() function which executes user-provided code from the system (CASIOWIN) context. * Added interrupt masks to the core context (should have been there long ago). * Added the gint_osmenu() function that switches out of gint to invoke GetKeyWait() and inject KEY_CTRL_MENU to trigger the main menu. This uses many CASIOWIN syscalls, but we don't care because gint is unloaded. Trickery is used to catch the key following the return in the add-in and/or display a new application frame before GetKeyWait() even finishes after coming back. This is only available on fx9860g for now. * Removed any public syscall definition to clear up interfaces. * Patched the DMA interruption problem in a weird way on fxcg50, a driver function will be used to do that properly eventually. * Changed the driver model to save driver contexts in preallocated spaces instead of on the stack for overall less risk. * Enabled return-to-menu with the MENU key on fx9860g in getkey(). * Changed the keyboard driver to emit releases before presses, as a return-to-menu acts as a press+release of different keys in a single driver frame, which confuses getkey(). * Fixed a really stupid bug in memcpy() that made the function really not work. Improvements in the timer driver: * Expose ETMU modules as SH7705_TMU and SH7305_TMU in <gint/mpu/tmu.h>. * Remove the timer_t structures, using SH*_ETMU and SH*_TMU instead. Only interrupt gate entries are left hardcoded. * Discovered that not only every write to the TCNT or TCR of an ETMU takes about 1/32k of a second (hinting at registers being powered by the same clock as the timer), but every write occuring while a previous write is pending is *lost*. This led to terrible bugs when switching ETMU contexts too fast in gint_switch(). * Removed an internal timer_address() function. * Overall simplified the handling of timers and the initialization step.
2020-05-10 14:03:41 +02:00
/* Return to menu */
.global ___Timer_Install
.global ___Timer_Start
.global ___Timer_Stop
.global ___Timer_Deinstall
.global ___PutKeyCode
.global ___GetKeyWait
.global ___ClearKeyBuffer
.global ___GetVRAMAddress
core: better bootlog API and implementation * Now uses topti instead of fxlib for text (including MMU failure) * Fit .pretext into 4k for everything before MMU succeeds * A short version of sprintf() for dynamic messages * Support a driver function, status(), to allow early driver debug * Expose more useful platform information in <gint/mpu.h> * Expose the first of a few CASIOWIN syscalls
2019-03-06 14:32:51 +01:00
.section ".pretext"
libc: implement malloc() etc. through syscalls Currently only used by libprof itself.
2019-07-16 21:17:32 +02:00
#define syscall(id) \
mov.l syscall_table, r2 ;\
mov.l 1f, r0 ;\
jmp @r2 ;\
nop ;\
1: .long id
core: better bootlog API and implementation * Now uses topti instead of fxlib for text (including MMU failure) * Fit .pretext into 4k for everything before MMU succeeds * A short version of sprintf() for dynamic messages * Support a driver function, status(), to allow early driver debug * Expose more useful platform information in <gint/mpu.h> * Expose the first of a few CASIOWIN syscalls
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#ifdef FX9860G
libc: implement malloc() etc. through syscalls Currently only used by libprof itself.
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/* Dynamic allocation */
_malloc:
syscall(0x0acd)
_free:
syscall(0x0acc)
_calloc:
syscall(0x0e6b)
_realloc:
syscall(0x0e6d)
core: add BFile syscalls
2019-07-04 18:15:13 +02:00
/* BFile driver */
# int BFile_Remove(const uint16_t *file)
_BFile_Remove:
TODO update and miscellaneous style
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syscall(0x0439)
core: add BFile syscalls
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# int BFile_Create(uint16_t *file, enum { file = 1, folder = 5 }, int *size)
_BFile_Create:
TODO update and miscellaneous style
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syscall(0x0434)
core: add BFile syscalls
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# int BFile_Open(const uint16_t *file, int mode)
_BFile_Open:
TODO update and miscellaneous style
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syscall(0x042c)
core: add BFile syscalls
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# int BFile_Close(int handle)
_BFile_Close:
TODO update and miscellaneous style
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syscall(0x042d)
core: add BFile syscalls
2019-07-04 18:15:13 +02:00
core: add BFile_Size syscall
2020-01-13 15:44:04 +01:00
# int BFile_Size(int handle)
_BFile_Size:
syscall(0x042f)
core: add BFile syscalls
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# int BFile_Write(int handle, const void *ram_buffer, int even_size)
_BFile_Write:
TODO update and miscellaneous style
2019-07-17 00:34:10 +02:00
syscall(0x0435)
core: add BFile syscalls
2019-07-04 18:15:13 +02:00
# int BFile_Read(int handle, void *ram_buffer, int size, int whence)
_BFile_Read:
TODO update and miscellaneous style
2019-07-17 00:34:10 +02:00
syscall(0x0432)
core: add BFile syscalls
2019-07-04 18:15:13 +02:00
core: slightly better integration of BFile calls
2020-02-19 23:09:06 +01:00
# int BFile_FindFirst(uint16_t const *search, int *shandle,
# uint16_t *foundfile, struct BFile_FileInfo *fileinfo)
core: add BFile_FindFirst, Next and Close syscalls The return code -1 noted in the BFile_FindFirst or BFile_FindNext is from test, which mean it could be possibles that they are negative error code from functions failing and not meaning that no file have been found, to be sure, the value IML_FILEERR_ENUMERATEEND from filebios.h in the fxlib need to be checked (and maybe defined in gint with a more meaningful name for user interactivity)
2020-01-13 23:09:18 +01:00
_BFile_FindFirst:
syscall(0x043b)
core: slightly better integration of BFile calls
2020-02-19 23:09:06 +01:00
# int BFile_FindNext(int shandle, uint16_t *foundfile,
# struct BFile_FileInfo *fileinfo)
core: add BFile_FindFirst, Next and Close syscalls The return code -1 noted in the BFile_FindFirst or BFile_FindNext is from test, which mean it could be possibles that they are negative error code from functions failing and not meaning that no file have been found, to be sure, the value IML_FILEERR_ENUMERATEEND from filebios.h in the fxlib need to be checked (and maybe defined in gint with a more meaningful name for user interactivity)
2020-01-13 23:09:18 +01:00
_BFile_FindNext:
syscall(0x043c)
# int BFile_FindClose(int shandle)
_BFile_FindClose:
syscall(0x043d)
core, tmu: add gint_switch(), return to menu, and improve timer code * Add the gint_switch() function which executes user-provided code from the system (CASIOWIN) context. * Added interrupt masks to the core context (should have been there long ago). * Added the gint_osmenu() function that switches out of gint to invoke GetKeyWait() and inject KEY_CTRL_MENU to trigger the main menu. This uses many CASIOWIN syscalls, but we don't care because gint is unloaded. Trickery is used to catch the key following the return in the add-in and/or display a new application frame before GetKeyWait() even finishes after coming back. This is only available on fx9860g for now. * Removed any public syscall definition to clear up interfaces. * Patched the DMA interruption problem in a weird way on fxcg50, a driver function will be used to do that properly eventually. * Changed the driver model to save driver contexts in preallocated spaces instead of on the stack for overall less risk. * Enabled return-to-menu with the MENU key on fx9860g in getkey(). * Changed the keyboard driver to emit releases before presses, as a return-to-menu acts as a press+release of different keys in a single driver frame, which confuses getkey(). * Fixed a really stupid bug in memcpy() that made the function really not work. Improvements in the timer driver: * Expose ETMU modules as SH7705_TMU and SH7305_TMU in <gint/mpu/tmu.h>. * Remove the timer_t structures, using SH*_ETMU and SH*_TMU instead. Only interrupt gate entries are left hardcoded. * Discovered that not only every write to the TCNT or TCR of an ETMU takes about 1/32k of a second (hinting at registers being powered by the same clock as the timer), but every write occuring while a previous write is pending is *lost*. This led to terrible bugs when switching ETMU contexts too fast in gint_switch(). * Removed an internal timer_address() function. * Overall simplified the handling of timers and the initialization step.
2020-05-10 14:03:41 +02:00
/* Return to menu */
___Timer_Install:
syscall(0x118)
___Timer_Start:
syscall(0x11a)
___Timer_Stop:
syscall(0x11b)
___Timer_Deinstall:
syscall(0x119)
___PutKeyCode:
syscall(0x24f)
___GetKeyWait:
syscall(0x247)
___ClearKeyBuffer:
syscall(0x241)
___GetVRAMAddress:
syscall(0x135)
core: better bootlog API and implementation * Now uses topti instead of fxlib for text (including MMU failure) * Fit .pretext into 4k for everything before MMU succeeds * A short version of sprintf() for dynamic messages * Support a driver function, status(), to allow early driver debug * Expose more useful platform information in <gint/mpu.h> * Expose the first of a few CASIOWIN syscalls
2019-03-06 14:32:51 +01:00
syscall_table:
.long 0x80010070
#endif /* FX9860G */
#ifdef FXCG50
libc: implement malloc() etc. through syscalls Currently only used by libprof itself.
2019-07-16 21:17:32 +02:00
/* Dynamic allocation */
_malloc:
syscall(0x1f44)
_free:
syscall(0x1f42)
_calloc:
syscall(0x1f40)
_realloc:
syscall(0x1f46)
core: better bootlog API and implementation * Now uses topti instead of fxlib for text (including MMU failure) * Fit .pretext into 4k for everything before MMU succeeds * A short version of sprintf() for dynamic messages * Support a driver function, status(), to allow early driver debug * Expose more useful platform information in <gint/mpu.h> * Expose the first of a few CASIOWIN syscalls
2019-03-06 14:32:51 +01:00
syscall_table:
.long 0x80020070
#endif /* FXCG50 */