Changeset 9a1ccb3 in rtems

Timestamp:

04/22/96 16:43:44 (27 years ago)

Author:

Joel Sherrill <joel.sherrill@…>

Branches:

4.10, 4.11, 4.8, 4.9, 5, master

Children:

96981e3a

Parents:

f581163a

Message:

added stack allocation fields to the cpu table

added CPU_M68K_EXTB_L model flag

Files:

• c/src/exec/score/cpu/m68k/cpu.h (modified) (3 diffs)
• c/src/exec/score/cpu/m68k/m68360.h (added)
• c/src/exec/score/cpu/m68k/m68k.h (modified) (11 diffs)
• cpukit/score/cpu/m68k/m68360.h (added)
• cpukit/score/cpu/m68k/rtems/m68k/m68360.h (added)

c/src/exec/score/cpu/m68k/cpu.h

@@ -140 +140 @@
   unsigned32   interrupt_stack_size;
   unsigned32   extra_mpci_receive_server_stack;
+  void *     (*stack_allocate_hook)( unsigned32 );
+  void       (*stack_free_hook)( void* );
+  /* end of fields required on all CPUs */
+
   m68k_isr    *interrupt_vector_table;
 }   rtems_cpu_table;
@@ -334 +338 @@
    _CPU_Priority_bits_index is not needed), handles the 0 case, and
    does not molest _value -- jsg */
-#ifndef m68000
+#if ( M68K_HAS_EXTB_L == 1 )
 #define _CPU_Bitfield_Find_first_bit( _value, _output ) \
   { \
@@ -372 +376 @@
        : "cc" ) ; \
   }
-#endif /* m68000 */
+#endif /* M68K_HAS_EXTB_L */
 
 #endif

c/src/exec/score/cpu/m68k/m68k.h

@@ -77 +77 @@
  *    implement the DLE or multiplexed bus modes.  The 68EC040 does not
  *    implement the output buffer impedance selection mode of operation."
- */
- 
+ *
+ *  M68K_HAS_EXTB_L is used to enable/disable usage of the extb.l instruction
+ *  which is not available for 68000 or 68ec000 cores (68000, 68001, 68008, 
+ *  68010, 68302, 68306, 68307).  This instruction is available on the 68020
+ *  up and the cpu32 based models.  
+ *
+ *  NOTE:
+ *    Eventually it would be nice to evaluate doing a lot of this section
+ *    by having each model specigy which core it uses and then go from there.
+ */
+
 #if defined(m68000)
  
@@ -87 +96 @@
 #define M68K_HAS_BFFFO           0
 #define M68K_HAS_PREINDEXING     0
+#define M68K_HAS_EXTB_L          0
 
 #elif defined(m68020)
@@ -96 +106 @@
 #define M68K_HAS_BFFFO           1
 #define M68K_HAS_PREINDEXING     1
+#define M68K_HAS_EXTB_L          1
  
 #elif defined(m68020_nofp)
@@ -105 +116 @@
 #define M68K_HAS_BFFFO           1
 #define M68K_HAS_PREINDEXING     1
+#define M68K_HAS_EXTB_L          1
  
 #elif defined(m68030)
@@ -114 +126 @@
 #define M68K_HAS_BFFFO           1
 #define M68K_HAS_PREINDEXING     1
+#define M68K_HAS_EXTB_L          1
  
 #elif defined(m68040)
@@ -123 +136 @@
 #define M68K_HAS_BFFFO           1
 #define M68K_HAS_PREINDEXING     1
+#define M68K_HAS_EXTB_L          1
  
 #elif defined(m68lc040)
@@ -132 +146 @@
 #define M68K_HAS_BFFFO           1
 #define M68K_HAS_PREINDEXING     1
+#define M68K_HAS_EXTB_L          1
  
 #elif defined(m68ec040)
@@ -141 +156 @@
 #define M68K_HAS_BFFFO           1
 #define M68K_HAS_PREINDEXING     1
+#define M68K_HAS_EXTB_L          1
 
 #elif defined(m68302)
@@ -150 +166 @@
 #define M68K_HAS_BFFFO           0
 #define M68K_HAS_PREINDEXING     0
+#define M68K_HAS_EXTB_L          0
 
 #elif defined(m68332)
@@ -159 +176 @@
 #define M68K_HAS_BFFFO           0
 #define M68K_HAS_PREINDEXING     0
+#define M68K_HAS_EXTB_L          1
 
 #elif defined(m68360)
@@ -168 +186 @@
 #define M68K_HAS_BFFFO           0
 #define M68K_HAS_PREINDEXING     1
+#define M68K_HAS_EXTB_L          1
 
 #else