Changeset 6eabb6e6 in mainline for kernel/arch/sparc64/src/trap/exception.c

Timestamp:

2006-09-13T13:16:30Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

34d9469e

Parents:

9a5b556

Message:

Support for sparc64 FPU context.

File:

• kernel/arch/sparc64/src/trap/exception.c (modified) (2 diffs)

kernel/arch/sparc64/src/trap/exception.c

@@ -38 +38 @@
 #include <interrupt.h>
 #include <arch/asm.h>
+#include <arch/register.h>
 #include <debug.h>
 #include <typedefs.h>
@@ -82 +83 @@
 }
 
+/** Handle fp_disabled. (0x20) */
+void fp_disabled(int n, istate_t *istate)
+{
+        fprs_reg_t fprs;
+        
+        fprs.value = fprs_read();
+        if (!fprs.fef) {
+                fprs.fef = true;
+                fprs_write(fprs.value);
+                return;
+        }
+
+#ifdef CONFIG_FPU_LAZY
+        scheduler_fpu_lazy_request();
+#else
+        fault_if_from_uspace(istate, "%s\n", __FUNCTION__);
+        dump_istate(istate);
+        panic("%s\n", __FUNCTION__);
+#endif
+}
+
 /** Handle division_by_zero. (0x28) */
 void division_by_zero(int n, istate_t *istate)