Changeset 371bd7d in mainline for uspace/lib/c/arch/sparc64/src

Timestamp:

2010-03-27T09:22:17Z (16 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

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

Children:

36a75a2

Parents:

cd82bb1 (diff), eaf22d4 (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge mainline changes.

Location:

uspace/lib/c/arch/sparc64/src

Files:

• entry.s (moved) (moved from uspace/lib/libc/arch/sparc64/src/entry.s ) (1 diff)
• fibril.S (moved) (moved from uspace/lib/libc/arch/sparc64/src/fibril.S ) (2 diffs)
• stacktrace.c (added)
• stacktrace_asm.S (added)
• thread_entry.s (moved) (moved from uspace/lib/libc/arch/sparc64/src/thread_entry.s ) (1 diff)
• tls.c (moved) (moved from uspace/lib/libc/arch/sparc64/src/tls.c )

uspace/lib/c/arch/sparc64/src/entry.s

@@ -39 +39 @@
 #
 __entry:
+        #
+        # Create the first stack frame.
+        #
+        save %sp, -176, %sp
+        flushw
+        add %g0, -0x7ff, %fp
+
         # Pass pcb_ptr as the first argument to __main()
-        mov %o1, %o0
+        mov %i1, %o0
         sethi %hi(_gp), %l7
         call __main

uspace/lib/c/arch/sparc64/src/fibril.S

@@ -35 +35 @@
 
 context_save:
+        #
+        # We rely on the kernel to flush our active register windows to memory
+        # should a thread switch occur.
+        #
         CONTEXT_SAVE_ARCH_CORE %o0
         retl
@@ -42 +46 @@
         #
         # Flush all active windows.
-        # This is essential, because CONTEXT_LOAD overwrites
-        # %sp of CWP - 1 with the value written to %fp of CWP.
-        # Flushing all active windows mitigates this problem
-        # as CWP - 1 becomes the overlap window.
-        #               
+        # This is essential, because CONTEXT_RESTORE_ARCH_CORE overwrites %sp of
+        # CWP - 1 with the value written to %fp of CWP.  Flushing all active
+        # windows mitigates this problem as CWP - 1 becomes the overlap window.
+        #
         flushw
         

uspace/lib/c/arch/sparc64/src/thread_entry.s

@@ -35 +35 @@
 #
 __thread_entry:
+        #
+        # Create the first stack frame.
+        #
+
+        #save %sp, -176, %sp
+        #flushw
+        #add %g0, -0x7ff, %fp
+
         sethi %hi(_gp), %l7
         call __thread_main              ! %o0 contains address of uarg