Initial creation of sourceware repositorygdb-4_18-branchpoint

1 files changed, 89 insertions, 0 deletions

diff --git a/sim/h8300/inst.h b/sim/h8300/inst.h
new file mode 100644
index 0000000..ce930c3
--- /dev/null
+++ b/sim/h8300/inst.h
@@ -0,0 +1,89 @@
+#define DEBUG
+
+/* These define the size of main memory for the simulator.
+
+   Note the size of main memory for the H8/300H is only 256k.  Keeping it
+   small makes the simulator run much faster and consume less memory.
+
+   The linker knows about the limited size of the simulator's main memory
+   on the H8/300H (via the h8300h.sc linker script).  So if you change
+   H8300H_MSIZE, be sure to fix the linker script too.
+
+   Also note that there's a separate "eightbit" area aside from main
+   memory.  For simplicity, the simulator assumes any data memory reference
+   outside of main memory refers to the eightbit area (in theory, this
+   can only happen when simulating H8/300H programs).  We make no attempt
+   to catch overlapping addresses, wrapped addresses, etc etc.  */
+#define H8300_MSIZE (1<<16)
+#define H8300H_MSIZE (1<<18)
+
+#define CSIZE 1000
+
+/* Local register names */
+typedef enum
+{
+  R0, R1, R2, R3, R4, R5, R6, R7,
+  R_ZERO,
+  R_PC,				
+  R_CCR,
+  R_HARD_0,			
+  R_LAST,
+} reg_type;
+
+
+/* Structure used to describe addressing */
+
+typedef struct
+{
+  int type;
+  int reg;
+  int literal;
+} ea_type;
+
+
+
+typedef struct
+{
+  ea_type src;
+  ea_type dst;
+  int opcode;
+  int next_pc;
+  int oldpc;
+  int cycles;
+#ifdef DEBUG
+struct h8_opcode *op;
+#endif
+}
+decoded_inst;
+
+enum h8300_sim_state {
+  SIM_STATE_RUNNING, SIM_STATE_EXITED, SIM_STATE_SIGNALLED, SIM_STATE_STOPPED
+};
+
+typedef struct
+{
+  enum h8300_sim_state state;
+  int exception;
+  unsigned  int regs[9];
+  int pc;
+  int ccr;
+  
+
+  unsigned char *memory;
+  unsigned char *eightbit;
+  unsigned short *cache_idx;
+  int cache_top;
+  int maximum;
+  int csize;
+  int mask;
+  
+  decoded_inst *cache;
+  int cycles;
+  int insts;
+  int ticks;
+  int compiles;
+#ifdef ADEBUG
+  int stats[O_LAST];
+#endif
+}
+cpu_state_type;