sim: lm32: invert sim_cpu storage

The cpu.h change is in generated cgen code, but that has been sent
upstream too, so the next regen should include it automatically.

sim/lm32/cpu.h

@@ -54,7 +54,7 @@ typedef struct {
 #define GET_H_CSR(a1) CPU (h_csr)[a1]
 #define SET_H_CSR(a1, x) (CPU (h_csr)[a1] = (x))
   } hardware;
-#define CPU_CGEN_HW(cpu) (& (cpu)->cpu_data.hardware)
+#define CPU_CGEN_HW(cpu) (& LM32_SIM_CPU (cpu)->cpu_data.hardware)
 } LM32BF_CPU_DATA;
 
 /* Cover fns for register access.  */

sim/lm32/sim-if.c

@@ -101,7 +101,8 @@ sim_open (SIM_OPEN_KIND kind, host_callback *callback, struct bfd *abfd,
   current_target_byte_order = BFD_ENDIAN_BIG;
 
   /* The cpu data is kept in a separately allocated chunk of memory.  */
-  if (sim_cpu_alloc_all (sd, 1) != SIM_RC_OK)
+  if (sim_cpu_alloc_all_extra (sd, 1, sizeof (struct lm32_sim_cpu))
+      != SIM_RC_OK)
     {
       free_state (sd);
       return 0;

sim/lm32/sim-main.h

@@ -23,6 +23,8 @@
 #ifndef SIM_MAIN_H
 #define SIM_MAIN_H
 
+#define SIM_HAVE_COMMON_SIM_CPU
+
 #define WITH_SCACHE_PBB 1
 
 #include "symcat.h"
@@ -36,16 +38,8 @@
 #include "lm32-sim.h"
 #include "opcode/cgen.h"
 
-/* The _sim_cpu struct.  */
-
-struct _sim_cpu
+struct lm32_sim_cpu
 {
-  /* sim/common cpu base.  */
-  sim_cpu_base base;
-
-  /* Static parts of cgen.  */
-  CGEN_CPU cgen_cpu;
-
   /* CPU specific parts go here.
      Note that in files that don't need to access these pieces WANT_CPU_FOO
      won't be defined and thus these parts won't appear.  This is ok in the
@@ -56,8 +50,8 @@ struct _sim_cpu
 #if defined (WANT_CPU_LM32BF)
   LM32BF_CPU_DATA cpu_data;
 #endif
-
 };
+#define LM32_SIM_CPU(cpu) ((struct lm32_sim_cpu *) CPU_ARCH_DATA (cpu))
 
 /* Misc.  */