Changeset 1f12fab in mainline for uspace/lib/c/arch/sparc32/src/entry.s

Timestamp:

2013-10-07T20:00:34Z (11 years ago)

Author:

Jakub Klama <jakub.klama@…>

Branches:

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

Children:

a73ebf0

Parents:

80d9d83

Message:

First attempt to implement preemptive trap handlers
and switch to userspace. Preemptive traps are needed
for at least page faults, as page fault handling code
can trigger window underflow/overflow exceptions.

This commit also introduces userspace window buffer
for saving userspace register windows (just as in
sparc64).

These changes are unfinished and far from working
correctly.

File:

• uspace/lib/c/arch/sparc32/src/entry.s (modified) (1 diff)

uspace/lib/c/arch/sparc32/src/entry.s

@@ -44 +44 @@
         save %sp, -176, %sp
 # XXX   flushw
-        add %g0, -0x7ff, %fp
+#       add %g0, -0x7ff, %fp
+        set 0x80000000, %fp
         
         # Pass pcb_ptr as the first argument to __main()