Changeset 37b451f7 in mainline for arch/amd64/src/proc/scheduler.c

Timestamp:

2006-02-07T02:22:44Z (19 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

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

Children:

65640fef

Parents:

dd4d6b0

Message:

Added (finally!) userspace to AMD64.
It does not work on Simics *$U&%&$&*#. Broken simics!!!
There should be probably LEA instead of MOV/ADD, but LEA does not
work in neither qemu nor bochs. Any other simulator to test? :-/

File:

• arch/amd64/src/proc/scheduler.c (modified) (1 diff)

arch/amd64/src/proc/scheduler.c

@@ -32 +32 @@
 #include <arch.h>
 #include <arch/context.h>       /* SP_DELTA */
+#include <arch/asm.h>
 
 void before_thread_runs_arch(void)
 {
         CPU->arch.tss->rsp0 = (__address) &THREAD->kstack[THREAD_STACK_SIZE-SP_DELTA];
+
+        /* Syscall support - write thread address to hidden part of gs */
+        swapgs();
+        write_msr(AMD_MSR_GS,
+                  (__u64)&THREAD->kstack);
+        swapgs();
 }