Changeset b994a60 in mainline for arch/ia64/src/ia64.c

Timestamp:

2006-03-09T12:44:27Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

901122b

Parents:

cd373bb

Message:

ia64 work.
Changes to make userspace work (kernel part).
Use ski.conf from contrib directory to run Ski.

There is actually no appropriate syscall handler yet.

File:

• arch/ia64/src/ia64.c (modified) (3 diffs)

arch/ia64/src/ia64.c

@@ -32 +32 @@
 #include <arch/interrupt.h>
 #include <arch/barrier.h>
+#include <arch/asm.h>
+#include <arch/register.h>
 #include <arch/types.h>
-
+#include <arch/context.h>
+#include <arch/mm/page.h>
+#include <mm/as.h>
+#include <config.h>
+#include <userspace.h>
 #include <console/console.h>
 
@@ -44 +50 @@
         ski_init_console();
         it_init();
+        config.init_addr = INIT_ADDRESS;
+        config.init_size = INIT_SIZE;
 }
 
@@ -54 +62 @@
 }
 
-
 void arch_post_smp_init(void)
 {
 }
+
+/** Enter userspace and never return. */
+void userspace(void)
+{
+        psr_t psr;
+        rsc_t rsc;
+
+        psr.value = psr_read();
+        psr.cpl = PL_USER;
+        psr.i = true;                           /* start with interrupts enabled */
+        psr.ic = true;
+        psr.ri = 0;                             /* start with instruction #0 */
+
+        __asm__ volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
+        rsc.loadrs = 0;
+        rsc.be = false;
+        rsc.pl = PL_USER;
+        rsc.mode = 3;                           /* eager mode */
+
+        switch_to_userspace(UTEXT_ADDRESS, USTACK_ADDRESS+PAGE_SIZE-1, USTACK_ADDRESS, psr.value, rsc.value);
+
+        while (1) {
+                ;
+        }
+}