Changeset 6b96ab44 in mainline for arch/ia64/include/context.h

Timestamp:

2005-05-17T22:43:57Z (20 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

1eee8383

Parents:

7f1bfce

Message:

IA-64 work.
Add the rest of branch registers to context_t.
Add predicate registers to context_t.
Modify context_save()/context_restore() to save/restore branch registers and predicate registers.
Change SP_DELTA to 0 since both context_save() and context_restore() are leaf procedures and as such don't use the scratch area.
Change pri_t to be u64 instead of u32.

File:

• arch/ia64/include/context.h (modified) (2 diffs)

arch/ia64/include/context.h

@@ -32 +32 @@
 #include <arch/types.h>
 
-#define SP_DELTA        16
+/*
+ * context_save() and context_restore() are both leaf procedures.
+ * No need to allocate scratch area.
+ */
+#define SP_DELTA        0
 
 struct context {
+        /*
+         * General registers
+         */
         __u64 r1;
         __u64 r2;
@@ -66 +73 @@
         __u64 r30;
         __u64 r31;
+        
+        /*
+         * Branch registers
+         */
         __u64 pc;               /* b0 */
+        __u64 b1;
+        __u64 b2;
+        __u64 b3;
+        __u64 b4;
+        __u64 b5;
+        __u64 b6;
+        __u64 b7;
+
+        /*
+         * Predicate registers
+         */
+        __u64 pr;
+        
         pri_t pri;
 } __attribute__ ((packed));