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Make joy_install, joy_uninstall user callable functions
git-svn-id: svn://svn.cc65.org/cc65/trunk@1950 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz
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@ -47,7 +47,7 @@ JOY_MASK_COUNT = 8 ; Size of the array
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JOY_HDR_JUMPTAB = 12
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JOY_HDR_INSTALL = JOY_HDR_JUMPTAB+0 ; INSTALL routine
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JOY_HDR_DEINSTALL = JOY_HDR_JUMPTAB+2 ; DEINSTALL routine
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JOY_HDR_UNINSTALL = JOY_HDR_JUMPTAB+2 ; UNINSTALL routine
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JOY_HDR_COUNT = JOY_HDR_JUMPTAB+4 ; COUNT routine
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JOY_HDR_READ = JOY_HDR_JUMPTAB+6 ; READ routine
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@ -62,7 +62,7 @@ JOY_HDR_JUMPCOUNT = 4 ; Number of jump vectors
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; Driver entry points
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.global joy_install
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.global joy_deinstall
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.global joy_uninstall
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.global joy_count
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.global joy_read
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@ -70,7 +70,8 @@ JOY_HDR_JUMPCOUNT = 4 ; Number of jump vectors
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; ASM functions
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.global _joy_install
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.global _joy_deinstall
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.global _joy_uninstall
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.global _joy_count
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.global _joy_read
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@ -84,10 +84,18 @@ extern const char joy_stddrv[];
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unsigned char __fastcall__ joy_load_driver (const char* driver);
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/* Load a joystick driver and return an error code */
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/* Load and install a joystick driver. Return an error code. */
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unsigned char __fastcall__ joy_unload (void);
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/* Unload the currently loaded driver. */
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/* Uninstall, then unload the currently loaded driver. */
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unsigned char __fastcall__ joy_install (void* driver);
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/* Install an already loaded driver. */
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unsigned char __fastcall__ joy_uninstall (void);
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/* Uninstall the currently loaded driver. Note: This call does not free
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* allocated memory.
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*/
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unsigned char __fastcall__ joy_count (void);
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/* Return the number of joysticks supported by the driver */
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@ -58,7 +58,7 @@ typedef struct {
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/* Jump vectors. Note that these are not C callable */
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void* install; /* INSTALL routine */
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void* deinstall; /* DEINSTALL routine */
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void* uninstall; /* UNINSTALL routine */
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void* count; /* COUNT routine */
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void* read; /* READ routine */
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@ -71,21 +71,6 @@ extern joy_drv_header* joy_drv; /* Pointer to driver */
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/*****************************************************************************/
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/* Functions */
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/*****************************************************************************/
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unsigned char __fastcall__ joy_install (void* driver);
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/* Install the driver once it is loaded, return an error code. */
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void __fastcall__ joy_deinstall (void);
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/* Deinstall the driver before unloading it */
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/* End of joy-kernel.h */
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#endif
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@ -4,8 +4,9 @@
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; Common functions of the joystick API.
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;
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.export _joy_install, _joy_deinstall, _joy_masks
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.export _joy_install, _joy_uninstall, _joy_masks
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.export joy_clear_ptr
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.importzp ptr1
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.include "joy-kernel.inc"
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@ -25,7 +26,7 @@ _joy_masks: .res JOY_MASK_COUNT
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.data
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joy_vectors:
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joy_install: jmp $0000
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joy_deinstall: jmp $0000
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joy_uninstall: jmp $0000
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joy_count: jmp $0000
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joy_read: jmp $0000
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@ -42,9 +43,9 @@ joy_sig_len = * - joy_sig
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_joy_install:
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sta _joy_drv
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sta ptr1
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stx _joy_drv+1
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stx ptr1+1
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sta ptr1
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stx _joy_drv+1
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stx ptr1+1
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; Check the driver signature
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@ -93,8 +94,19 @@ set: sta joy_vectors,x
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rts
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;----------------------------------------------------------------------------
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; void __fastcall__ joy_deinstall (void);
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; /* Deinstall the driver before unloading it */
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; unsigned char __fastcall__ joy_uninstall (void);
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; /* Uninstall the currently loaded driver. Note: This call does not free
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; * allocated memory.
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; */
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_joy_deinstall = joy_deinstall ; Call driver routine
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_joy_uninstall:
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jsr joy_uninstall ; Call the driver routine
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joy_clear_ptr: ; External entry point
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lda #0
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sta _joy_drv
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sta _joy_drv+1 ; Clear the driver pointer
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tax ; Return zero
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rts
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@ -5,6 +5,8 @@
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; /* Unload the currently loaded driver. */
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.import joy_clear_ptr
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.include "joy-kernel.inc"
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.include "joy-error.inc"
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.include "modload.inc"
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@ -14,22 +16,17 @@ _joy_unload:
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ora _joy_drv+1
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beq no_driver ; No driver
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jsr _joy_deinstall ; Deinstall the driver
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jsr joy_uninstall ; Uninstall the driver
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lda _joy_drv
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ldx _joy_drv+1
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jsr _mod_free ; Free the driver
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lda #0
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sta _joy_drv
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sta _joy_drv+1 ; Clear the driver pointer
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tax
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rts ; Return zero
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jmp joy_clear_ptr ; Clear driver pointer, return zero
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no_driver:
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tax ; X = 0
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lda #JOY_ERR_NO_DRIVER
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rts
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