summaryrefslogtreecommitdiff
path: root/plugins/gme/game-music-emu-0.5.5/gme/Kss_Cpu.h
diff options
context:
space:
mode:
Diffstat (limited to 'plugins/gme/game-music-emu-0.5.5/gme/Kss_Cpu.h')
-rw-r--r--plugins/gme/game-music-emu-0.5.5/gme/Kss_Cpu.h124
1 files changed, 0 insertions, 124 deletions
diff --git a/plugins/gme/game-music-emu-0.5.5/gme/Kss_Cpu.h b/plugins/gme/game-music-emu-0.5.5/gme/Kss_Cpu.h
deleted file mode 100644
index 28a2fc0f..00000000
--- a/plugins/gme/game-music-emu-0.5.5/gme/Kss_Cpu.h
+++ /dev/null
@@ -1,124 +0,0 @@
-// Z80 CPU emulator
-
-// Game_Music_Emu 0.5.5
-#ifndef KSS_CPU_H
-#define KSS_CPU_H
-
-#include "blargg_endian.h"
-
-typedef blargg_long cpu_time_t;
-
-// must be defined by caller
-void kss_cpu_out( class Kss_Cpu*, cpu_time_t, unsigned addr, int data );
-int kss_cpu_in( class Kss_Cpu*, cpu_time_t, unsigned addr );
-void kss_cpu_write( class Kss_Cpu*, unsigned addr, int data );
-
-class Kss_Cpu {
-public:
- typedef BOOST::uint8_t uint8_t;
-
- // Clear registers and map all pages to unmapped
- void reset( void* unmapped_write, void const* unmapped_read );
-
- // Map memory. Start and size must be multiple of page_size.
- enum { page_size = 0x2000 };
- void map_mem( unsigned addr, blargg_ulong size, void* write, void const* read );
-
- // Map address to page
- uint8_t* write( unsigned addr );
- uint8_t const* read( unsigned addr );
-
- // Run until specified time is reached. Returns true if suspicious/unsupported
- // instruction was encountered at any point during run.
- bool run( cpu_time_t end_time );
-
- // Time of beginning of next instruction
- cpu_time_t time() const { return state->time + state->base; }
-
- // Alter current time. Not supported during run() call.
- void set_time( cpu_time_t t ) { state->time = t - state->base; }
- void adjust_time( int delta ) { state->time += delta; }
-
- typedef BOOST::uint16_t uint16_t;
-
- #if BLARGG_BIG_ENDIAN
- struct regs_t { uint8_t b, c, d, e, h, l, flags, a; };
- #else
- struct regs_t { uint8_t c, b, e, d, l, h, a, flags; };
- #endif
- BOOST_STATIC_ASSERT( sizeof (regs_t) == 8 );
-
- struct pairs_t { uint16_t bc, de, hl, fa; };
-
- // Registers are not updated until run() returns
- struct registers_t {
- uint16_t pc;
- uint16_t sp;
- uint16_t ix;
- uint16_t iy;
- union {
- regs_t b; // b.b, b.c, b.d, b.e, b.h, b.l, b.flags, b.a
- pairs_t w; // w.bc, w.de, w.hl. w.fa
- };
- union {
- regs_t b;
- pairs_t w;
- } alt;
- uint8_t iff1;
- uint8_t iff2;
- uint8_t r;
- uint8_t i;
- uint8_t im;
- };
- //registers_t r; (below for efficiency)
-
- enum { idle_addr = 0xFFFF };
-
- // can read this far past end of a page
- enum { cpu_padding = 0x100 };
-
-public:
- Kss_Cpu();
- enum { page_shift = 13 };
- enum { page_count = 0x10000 >> page_shift };
-private:
- uint8_t szpc [0x200];
- cpu_time_t end_time_;
- struct state_t {
- uint8_t const* read [page_count + 1];
- uint8_t * write [page_count + 1];
- cpu_time_t base;
- cpu_time_t time;
- };
- state_t* state; // points to state_ or a local copy within run()
- state_t state_;
- void set_end_time( cpu_time_t t );
- void set_page( int i, void* write, void const* read );
-public:
- registers_t r;
-};
-
-#if BLARGG_NONPORTABLE
- #define KSS_CPU_PAGE_OFFSET( addr ) (addr)
-#else
- #define KSS_CPU_PAGE_OFFSET( addr ) ((addr) & (page_size - 1))
-#endif
-
-inline BOOST::uint8_t* Kss_Cpu::write( unsigned addr )
-{
- return state->write [addr >> page_shift] + KSS_CPU_PAGE_OFFSET( addr );
-}
-
-inline BOOST::uint8_t const* Kss_Cpu::read( unsigned addr )
-{
- return state->read [addr >> page_shift] + KSS_CPU_PAGE_OFFSET( addr );
-}
-
-inline void Kss_Cpu::set_end_time( cpu_time_t t )
-{
- cpu_time_t delta = state->base - t;
- state->base = t;
- state->time += delta;
-}
-
-#endif