1 files changed, 61 insertions, 0 deletions

diff --git a/arch/blackfin/include/asm/entry.h b/arch/blackfin/include/asm/entry.h
new file mode 100644
index 000000000000..c4f721e0d00d
--- /dev/null
+++ b/arch/blackfin/include/asm/entry.h
@@ -0,0 +1,61 @@
+#ifndef __BFIN_ENTRY_H
+#define __BFIN_ENTRY_H
+
+#include <asm/setup.h>
+#include <asm/page.h>
+
+#ifdef __ASSEMBLY__
+
+#define LFLUSH_I_AND_D  0x00000808
+#define LSIGTRAP        5
+
+/* process bits for task_struct.flags */
+#define PF_TRACESYS_OFF 3
+#define PF_TRACESYS_BIT 5
+#define PF_PTRACED_OFF  3
+#define PF_PTRACED_BIT  4
+#define PF_DTRACE_OFF   1
+#define PF_DTRACE_BIT   5
+
+/*
+ * NOTE!  The single-stepping code assumes that all interrupt handlers
+ * start by saving SYSCFG on the stack with their first instruction.
+ */
+
+/* This one is used for exceptions, emulation, and NMI.  It doesn't push
+   RETI and doesn't do cli.  */
+#define SAVE_ALL_SYS            save_context_no_interrupts
+/* This is used for all normal interrupts.  It saves a minimum of registers
+   to the stack, loads the IRQ number, and jumps to common code.  */
+#define INTERRUPT_ENTRY(N)                                              \
+    [--sp] = SYSCFG;                                                    \
+                                                                        \
+    [--sp] = P0;        /*orig_p0*/                                     \
+    [--sp] = R0;        /*orig_r0*/                                     \
+    [--sp] = (R7:0,P5:0);                                               \
+    R0 = (N);                                                           \
+    jump __common_int_entry;
+
+/* For timer interrupts, we need to save IPEND, since the user_mode
+           macro accesses it to determine where to account time.  */
+#define TIMER_INTERRUPT_ENTRY(N)                                        \
+    [--sp] = SYSCFG;                                                    \
+                                                                        \
+    [--sp] = P0;        /*orig_p0*/                                     \
+    [--sp] = R0;        /*orig_r0*/                                     \
+    [--sp] = (R7:0,P5:0);                                               \
+    p0.l = lo(IPEND);                                                   \
+    p0.h = hi(IPEND);                                                   \
+    r1 = [p0];                                                          \
+    R0 = (N);                                                           \
+    jump __common_int_entry;
+
+/* This one pushes RETI without using CLI.  Interrupts are enabled.  */
+#define SAVE_CONTEXT_SYSCALL    save_context_syscall
+#define SAVE_CONTEXT            save_context_with_interrupts
+
+#define RESTORE_ALL_SYS         restore_context_no_interrupts
+#define RESTORE_CONTEXT         restore_context_with_interrupts
+
+#endif                          /* __ASSEMBLY__ */
+#endif                          /* __BFIN_ENTRY_H */