Various changes to m5/dev files to work with FreeBSD.

dev/ide_ctrl.cc:
dev/ide_disk.cc:
dev/pcidev.cc:
    Made endian-independent.
dev/ide_disk.hh:
    fixed.
dev/pciconfigall.cc:
    The data to write is contained in a 32-bit unsigned int now. The union method would not have worked on big-endian machines.
dev/pcidev.hh:
    Fixed typo.
dev/tsunami_io.cc:
    Return zero on RTC alarm reads.
dev/uart8250.cc:
    Fix uart interrupt handling.

--HG--
extra : convert_revision : b5c08e8e77644c399c20888666406805ff1b6649

dev/ide_disk.hh

@@ -84,6 +84,7 @@ class PrdTableEntry {
 #define LCYL_OFFSET     (4)
 #define HCYL_OFFSET     (5)
 #define SELECT_OFFSET   (6)
+#define DRIVE_OFFSET    (6)
 #define STATUS_OFFSET   (7)
 #define COMMAND_OFFSET  (7)
 
@@ -105,10 +106,7 @@ class PrdTableEntry {
 
 typedef struct CommandReg {
     uint16_t data;
-    union {
-        uint8_t error;
-        uint8_t features;
-    };
+    uint8_t error;
     uint8_t sec_count;
     uint8_t sec_num;
     uint8_t cyl_low;
@@ -272,7 +270,7 @@ class IdeDisk : public SimObject
     }
 
     // Device register read/write
-    uint16_t read(const Addr &offset, RegType_t type);
+    void read(const Addr &offset, RegType_t type, uint8_t *data);
     void write(const Addr &offset, bool byte, bool cmdBlk, const uint8_t *data);
 
     // Start/abort functions