Changeset 4b2c872d in mainline for arch/amd64

Timestamp:

2005-10-18T09:33:02Z (20 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

8005218

Parents:

22f7769

Message:

Create generic context_save() and context_restore().
These two functions are defined inline and only call context_save_arch() and context_restore_arch(), respectively.
The main purpose of this is to enable centralized commenting of these important and tricky functions.

Location:

arch/amd64

Files:

• include/context.h (modified) (1 diff)
• src/context.S (modified) (3 diffs)

arch/amd64/include/context.h

@@ -45 +45 @@
  */
 struct context {
-    __u64 sp;
-    __u64 pc;
+    __address sp;
+    __address pc;
     
     __u64 rbx;

arch/amd64/src/context.S

@@ -29 +29 @@
 .text
 
-.global context_save
-.global context_restore
+.global context_save_arch
+.global context_restore_arch
 
 #include <arch/context_offset.h>
@@ -36 +36 @@
 ## Save current CPU context
 #
-# Save CPU context to the kernel_context variable
+# Save CPU context to context_t variable
 # pointed by the 1st argument. Returns 1 in EAX.
 #
-context_save:
+context_save_arch:
         movq (%rsp), %rdx     # the caller's return %eip
         # In %edi is passed 1st argument
@@ -59 +59 @@
 ## Restore current CPU context
 #
-# Restore CPU context from the kernel_context variable
+# Restore CPU context from context_t variable
 # pointed by the 1st argument. Returns 0 in EAX.
 #
-context_restore:        
+context_restore_arch:   
         movq OFFSET_R15(%rdi), %r15
         movq OFFSET_R14(%rdi), %r14