Changeset b254b3b in mainline

Timestamp:

2006-09-14T08:55:51Z (18 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

775df25

Parents:

da02e69

Message:

On sparc64, get_stack_base() must use the unbiased %sp (i.e. %sp + 2047).

File:

• kernel/arch/sparc64/include/asm.h (modified) (2 diffs)

kernel/arch/sparc64/include/asm.h

@@ -42 +42 @@
 #include <config.h>
 #include <time/clock.h>
+#include <arch/stack.h>
 
 /** Read Processor State register.
@@ -245 +246 @@
 static inline uintptr_t get_stack_base(void)
 {
-        uintptr_t v;
-        
-        __asm__ volatile ("andn %%sp, %1, %0\n" : "=r" (v) : "r" (STACK_SIZE-1));
-        
-        return v;
+        uintptr_t unbiased_sp;
+        
+        __asm__ volatile ("add %%sp, %1, %0\n" : "=r" (unbiased_sp) : "i" (STACK_BIAS));
+        
+        return ALIGN_DOWN(unbiased_sp, STACK_SIZE);
 }