1 files changed, 54 insertions, 0 deletions
diff --git a/includes/compiler/Registers.h b/includes/compiler/Registers.h
new file mode 100644
index 0000000..692d9dc
--- /dev/null
+++ b/includes/compiler/Registers.h
@@ -0,0 +1,54 @@
+#ifndef COMPILER_REGISTERS_H
+#define COMPILER_REGISTERS_H
+
+#include "compiler/common.h"
+
+enum {
+    RegisterMax = 32
+};
+const char RegClass_SPR = 0;
+const char RegClass_CRFIELD = 1;
+const char RegClass_VR = 2;
+const char RegClass_FPR = 3;
+const char RegClass_GPR = 4;
+const char RegClassMax = 5;
+const char RegClass_6 = 6;
+const char RegClass_DCR = 7;
+
+enum {
+    RegState0 = 0,
+    RegState1 = 1,
+    RegState2 = 2
+};
+
+extern int used_virtual_registers[RegClassMax];
+extern int used_nonvolatile_registers[RegClassMax];
+extern int assignable_registers[RegClassMax];
+extern int n_real_registers[RegClassMax];
+extern int n_scratch_registers[RegClassMax];
+extern int scratch_registers[RegClassMax][RegisterMax];
+extern int n_nonvolatile_registers[RegClassMax];
+extern int nonvolatile_registers[RegClassMax][RegisterMax];
+extern UInt8 reg_state[RegClassMax][RegisterMax];
+extern int first_temporary_register[RegClassMax];
+extern int last_temporary_register[RegClassMax];
+extern char *register_class_name[RegClassMax];
+extern char *register_class_format[RegClassMax];
+extern int coloring;
+extern int optimizing;
+
+extern void init_registers(void);
+extern void assign_register_to_variable(Object *obj, char rclass);
+extern void retain_register_for_argument(Object *obj, char rclass, short reg);
+extern int available_registers(char rclass);
+extern UInt32 volatile_registers(char rclass);
+extern short obtain_nonvolatile_register(char rclass);
+extern void open_temp_registers(void);
+extern void check_temp_registers(void);
+extern void close_temp_registers(void);
+extern int count_scratch_registers(void);
+extern void init_modified_registers(void);
+extern void note_modified_registers(Object *obj);
+extern void find_modified_registers(Object *obj, UInt32 *masks);
+
+#endif