1 files changed, 48 insertions, 0 deletions

diff --git a/arch/sparc/prom/cif.S b/arch/sparc/prom/cif.S
new file mode 100644
index 000000000000..5f27ad779c0c
--- /dev/null
+++ b/arch/sparc/prom/cif.S
@@ -0,0 +1,48 @@
+/* cif.S: PROM entry/exit assembler trampolines.
+ *
+ * Copyright (C) 1996, 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ * Copyright (C) 2005, 2006 David S. Miller <davem@davemloft.net>
+ */
+
+#include <asm/pstate.h>
+#include <asm/cpudata.h>
+#include <asm/thread_info.h>
+
+        .text
+        .globl  prom_cif_interface
+prom_cif_interface:
+        sethi   %hi(p1275buf), %o0
+        or      %o0, %lo(p1275buf), %o0
+        ldx     [%o0 + 0x010], %o1      ! prom_cif_stack
+        save    %o1, -192, %sp
+        ldx     [%i0 + 0x008], %l2      ! prom_cif_handler
+        mov     %g4, %l0
+        mov     %g5, %l1
+        mov     %g6, %l3
+        call    %l2
+         add    %i0, 0x018, %o0         ! prom_args
+        mov     %l0, %g4
+        mov     %l1, %g5
+        mov     %l3, %g6
+        ret
+         restore
+
+        .globl  prom_cif_callback
+prom_cif_callback:
+        sethi   %hi(p1275buf), %o1
+        or      %o1, %lo(p1275buf), %o1
+        save    %sp, -192, %sp
+        TRAP_LOAD_THREAD_REG(%g6, %g1)
+        LOAD_PER_CPU_BASE(%g5, %g6, %g4, %g3, %o0)
+        ldx     [%g6 + TI_TASK], %g4
+        call    prom_world
+         mov    0, %o0
+        ldx     [%i1 + 0x000], %l2
+        call    %l2
+         mov    %i0, %o0
+        mov     %o0, %l1
+        call    prom_world
+         mov    1, %o0
+        ret
+         restore %l1, 0, %o0
+