Changeset 0aee9b4 in mainline for kernel/arch/amd64/src/context.S

Timestamp:

2014-09-02T20:31:13Z (10 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

b3222a3

Parents:

4dc7a84

Message:

Autogenerate amd64 kernel context_t and its offsets.

File:

• kernel/arch/amd64/src/context.S (modified) (4 diffs)

kernel/arch/amd64/src/context.S

@@ -32 +32 @@
 .global context_restore_arch
 
-#include <arch/context_offset.h>
+#include <arch/context_struct.h>
 
 ## Save current CPU context
@@ -43 +43 @@
         
         # 1st argument passed in %edi
-        CONTEXT_SAVE_ARCH_CORE %rdi %rdx
+        movq %rdx, CONTEXT_OFFSET_PC(%rdi)
+        movq %rsp, CONTEXT_OFFSET_SP(%rdi)
+        
+        movq %rbx, CONTEXT_OFFSET_RBX(%rdi)
+        movq %rbp, CONTEXT_OFFSET_RBP(%rdi)
+        movq %r12, CONTEXT_OFFSET_R12(%rdi)
+        movq %r13, CONTEXT_OFFSET_R13(%rdi)
+        movq %r14, CONTEXT_OFFSET_R14(%rdi)
+        movq %r15, CONTEXT_OFFSET_R15(%rdi)
         
         xorl %eax, %eax       # context_save returns 1
@@ -56 +64 @@
 #
 context_restore_arch:
-        CONTEXT_RESTORE_ARCH_CORE %rdi %rdx
+        movq CONTEXT_OFFSET_R15(%rdi), %r15
+        movq CONTEXT_OFFSET_R14(%rdi), %r14
+        movq CONTEXT_OFFSET_R13(%rdi), %r13
+        movq CONTEXT_OFFSET_R12(%rdi), %r12
+        movq CONTEXT_OFFSET_RBP(%rdi), %rbp
+        movq CONTEXT_OFFSET_RBX(%rdi), %rbx
+        
+        movq CONTEXT_OFFSET_SP(%rdi), %rsp   # ctx->sp -> %rsp
+        
+        movq CONTEXT_OFFSET_PC(%rdi), %rdx 
         
         movq %rdx, (%rsp)
@@ -62 +79 @@
         xorl %eax, %eax       # context_restore returns 0
         ret
+