Initial commit

1 files changed, 85 insertions, 0 deletions

diff --git a/arm9/source/core.h b/arm9/source/core.h
new file mode 100644
index 0000000..e5494ca
--- /dev/null
+++ b/arm9/source/core.h
@@ -0,0 +1,85 @@
+#ifndef CORE_H_
+    #define CORE_H_
+
+    #include "devices/clock.h"
+    #include "devices/input.h"
+    #include "devices/math.h"
+    #include "devices/screen.h"
+    #include "devices/system.h"
+
+    #define WST           br->wst
+    #define RST           br->rst
+    #define MEM           br->mem
+    #define PC            br->pc
+
+    #define WSTV(i)       WST.mem[WST.p+(i)]
+    #define RSTV(i)       RST.mem[RST.p+(i)]
+
+    #define MLIT          MEM[PC++]
+    #define MLIT1(x)      x = MLIT;
+    #define MLIT2(x,y)    x = MLIT; y = MLIT;
+    #define MLITD(d)      d = (u16)(MEM[PC] << 8) | (u16)(MEM[PC+1]); PC+=2;
+
+    #define WPSH          WST.mem[WST.p++]
+    #define RPSH          RST.mem[RST.p++]
+    #define WPSH1(x)      WPSH = (x);
+    #define RPSH1(x)      RPSH = (x);
+    #define WPSH2(x,y)    WPSH1(x); WPSH1(y);
+    #define RPSH2(x,y)    RPSH1(x); RPSH1(y);
+    #define WPSHD(d)      WPSH1(HIGH((d))); WPSH1(LOW((d)));
+    #define RPSHD(d)      RPSH1(HIGH((d))); RPSH1(LOW((d)));
+
+    #define WPOP          WST.mem[--WST.p]
+    #define RPOP          RST.mem[--RST.p]
+    #define WPOP1(x)      x = WPOP;
+    #define RPOP1(x)      x = RPOP;
+    #define WPOP2(x,y)    WPOP1(y); WPOP1(x);
+    #define RPOP2(x,y)    RPOP1(y); RPOP1(x);
+    #define WPOPD(d)      d = (u16)(WSTV(-2) << 8) | (u16)(WSTV(-1)); WST.p-=2;
+    #define RPOPD(d)      d = (u16)(RSTV(-2) << 8) | (u16)(RSTV(-1)); RST.p-=2;
+
+    #define WGET1(x)      x = WSTV(-1);
+    #define RGET1(x)      x = RSTV(-1);
+    #define WGET2(x,y)    x = WSTV(-2); y = WSTV(-1);
+    #define RGET2(x,y)    x = RSTV(-2); y = RSTV(-1);
+    #define WGETD(x)      x = DOUBLE(WSTV(-2),WSTV(-1));
+    #define RGETD(x)      x = DOUBLE(RSTV(-2),RSTV(-1));
+
+    typedef enum {
+        SIG_NONE,
+        SIG_HALT,
+        SIG_SLEEP,
+        SIG_DB1,
+        SIG_DB2,
+        SIG_DB3,
+        SIG_DB4,
+        SIG_DB5,
+        SIG_DB6,
+    } Signal;
+
+    typedef struct {
+        u8 mem[256];            // stack memory
+        u8 p;                   // stack pointer
+    } Stack;
+
+    typedef struct {
+        bool alive;             // true when program is loaded
+        bool awake;             // true when program is not asleep
+        u8 mem[65536];          // program memory
+        u16 pc;                 // program counter
+        Stack wst, rst;         // working and return stacks
+        SystemDevice sys;
+        MathDevice math;
+        ClockDevice clk;
+        InputDevice inp;
+        ScreenDevice scr;
+    } Bedrock;
+
+    void reset_br(Bedrock *br);
+    void start_br(Bedrock *br, u8 program[], int size);
+    void rouse_br(Bedrock *br);
+    u8 dev_read(Bedrock *br, u8 port);
+    Signal dev_write(Bedrock *br, u8 port, u8 val);
+    Signal evaluate( Bedrock *br, u16 count);
+
+#endif