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/***************************************************************************************
* Genesis Plus GX
* CPU hooking support
*
* HOOK_CPU should be defined in a makefile or MSVC project to enable this functionality
*
* Copyright DrMefistO (2018-2019)
*
* Copyright feos (2019)
*
* Redistribution and use of this code or any derivative works are permitted
* provided that the following conditions are met:
*
* - Redistributions may not be sold, nor may they be used in a commercial
* product or activity.
*
* - Redistributions that are modified from the original source must include the
* complete source code, including the source code for all components used by a
* binary built from the modified sources. However, as a special exception, the
* source code distributed need not include anything that is normally distributed
* (in either source or binary form) with the major components (compiler, kernel,
* and so on) of the operating system on which the executable runs, unless that
* component itself accompanies the executable.
*
* - Redistributions must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************************/
#ifndef _CPUHOOK_H_
#define _CPUHOOK_H_
typedef enum {
HOOK_ANY = (0 << 0),
// M68K
HOOK_M68K_E = (1 << 0),
HOOK_M68K_R = (1 << 1),
HOOK_M68K_W = (1 << 2),
HOOK_M68K_RW = HOOK_M68K_R | HOOK_M68K_W,
// VDP
HOOK_VRAM_R = (1 << 3),
HOOK_VRAM_W = (1 << 4),
HOOK_VRAM_RW = HOOK_VRAM_R | HOOK_VRAM_W,
HOOK_CRAM_R = (1 << 5),
HOOK_CRAM_W = (1 << 6),
HOOK_CRAM_RW = HOOK_CRAM_R | HOOK_CRAM_W,
HOOK_VSRAM_R = (1 << 7),
HOOK_VSRAM_W = (1 << 8),
HOOK_VSRAM_RW = HOOK_VSRAM_R | HOOK_VSRAM_W,
// Z80
HOOK_Z80_E = (1 << 9),
HOOK_Z80_R = (1 << 10),
HOOK_Z80_W = (1 << 11),
HOOK_Z80_RW = HOOK_Z80_R | HOOK_Z80_W,
// REGS
HOOK_VDP_REG = (1 << 12),
HOOK_M68K_REG = (1 << 13),
} hook_type_t;
/* CPU hook is called on read, write, and execute.
*/
void (*cpu_hook)(hook_type_t type, int width, unsigned int address, unsigned int value);
/* Use set_cpu_hook() to assign a callback that can process the data provided
* by cpu_hook().
*/
void set_cpu_hook(void(*hook)(hook_type_t type, int width, unsigned int address, unsigned int value));
#endif /* _CPUHOOK_H_ */
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