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Diffstat (limited to 'trunk/src/emu/cpu/nec/necmodrm.h')
-rw-r--r--trunk/src/emu/cpu/nec/necmodrm.h104
1 files changed, 104 insertions, 0 deletions
diff --git a/trunk/src/emu/cpu/nec/necmodrm.h b/trunk/src/emu/cpu/nec/necmodrm.h
new file mode 100644
index 00000000000..cf8956b8106
--- /dev/null
+++ b/trunk/src/emu/cpu/nec/necmodrm.h
@@ -0,0 +1,104 @@
+static struct {
+ struct {
+ WREGS w[256];
+ BREGS b[256];
+ } reg;
+ struct {
+ WREGS w[256];
+ BREGS b[256];
+ } RM;
+} Mod_RM;
+
+#define RegWord(ModRM) Wreg(Mod_RM.reg.w[ModRM])
+#define RegByte(ModRM) Breg(Mod_RM.reg.b[ModRM])
+
+#define GetRMWord(ModRM) \
+ ((ModRM) >= 0xc0 ? Wreg(Mod_RM.RM.w[ModRM]) : ( (*GetEA[ModRM])(nec_state), read_mem_word( EA ) ))
+
+#define PutbackRMWord(ModRM,val) \
+{ \
+ if (ModRM >= 0xc0) Wreg(Mod_RM.RM.w[ModRM])=val; \
+ else write_mem_word(EA,val); \
+}
+
+#define GetnextRMWord read_mem_word((EA&0xf0000)|((EA+2)&0xffff))
+
+#define PutRMWord(ModRM,val) \
+{ \
+ if (ModRM >= 0xc0) \
+ Wreg(Mod_RM.RM.w[ModRM])=val; \
+ else { \
+ (*GetEA[ModRM])(nec_state); \
+ write_mem_word( EA ,val); \
+ } \
+}
+
+#define PutImmRMWord(ModRM) \
+{ \
+ WORD val; \
+ if (ModRM >= 0xc0) \
+ Wreg(Mod_RM.RM.w[ModRM]) = FETCHWORD(); \
+ else { \
+ (*GetEA[ModRM])(nec_state); \
+ val = FETCHWORD(); \
+ write_mem_word( EA , val); \
+ } \
+}
+
+#define GetRMByte(ModRM) \
+ ((ModRM) >= 0xc0 ? Breg(Mod_RM.RM.b[ModRM]) : read_mem_byte( (*GetEA[ModRM])(nec_state) ))
+
+#define PutRMByte(ModRM,val) \
+{ \
+ if (ModRM >= 0xc0) \
+ Breg(Mod_RM.RM.b[ModRM])=val; \
+ else \
+ write_mem_byte( (*GetEA[ModRM])(nec_state) ,val); \
+}
+
+#define PutImmRMByte(ModRM) \
+{ \
+ if (ModRM >= 0xc0) \
+ Breg(Mod_RM.RM.b[ModRM])=FETCH(); \
+ else { \
+ (*GetEA[ModRM])(nec_state); \
+ write_mem_byte( EA , FETCH() ); \
+ } \
+}
+
+#define PutbackRMByte(ModRM,val) \
+{ \
+ if (ModRM >= 0xc0) \
+ Breg(Mod_RM.RM.b[ModRM])=val; \
+ else \
+ write_mem_byte(EA,val); \
+}
+
+#define DEF_br8 \
+ UINT32 ModRM = FETCH(),src,dst; \
+ src = RegByte(ModRM); \
+ dst = GetRMByte(ModRM)
+
+#define DEF_wr16 \
+ UINT32 ModRM = FETCH(),src,dst; \
+ src = RegWord(ModRM); \
+ dst = GetRMWord(ModRM)
+
+#define DEF_r8b \
+ UINT32 ModRM = FETCH(),src,dst; \
+ dst = RegByte(ModRM); \
+ src = GetRMByte(ModRM)
+
+#define DEF_r16w \
+ UINT32 ModRM = FETCH(),src,dst; \
+ dst = RegWord(ModRM); \
+ src = GetRMWord(ModRM)
+
+#define DEF_ald8 \
+ UINT32 src = FETCH(); \
+ UINT32 dst = Breg(AL)
+
+#define DEF_axd16 \
+ UINT32 src = FETCH(); \
+ UINT32 dst = Wreg(AW); \
+ src += (FETCH() << 8)