summaryrefslogtreecommitdiff
path: root/arch/sparc/prom/cif.S
diff options
context:
space:
mode:
authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/sparc/prom/cif.S
Initial import
Diffstat (limited to 'arch/sparc/prom/cif.S')
-rw-r--r--arch/sparc/prom/cif.S47
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/sparc/prom/cif.S b/arch/sparc/prom/cif.S
new file mode 100644
index 000000000..8050f381f
--- /dev/null
+++ b/arch/sparc/prom/cif.S
@@ -0,0 +1,47 @@
+/* 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_direct
+prom_cif_direct:
+ save %sp, -192, %sp
+ sethi %hi(p1275buf), %o1
+ or %o1, %lo(p1275buf), %o1
+ ldx [%o1 + 0x0008], %l2 ! prom_cif_handler
+ mov %g4, %l0
+ mov %g5, %l1
+ mov %g6, %l3
+ call %l2
+ mov %i0, %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
+