aboutsummaryrefslogtreecommitdiff
path: root/arch/blackfin/include/asm/flat.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/blackfin/include/asm/flat.h')
-rw-r--r--arch/blackfin/include/asm/flat.h58
1 files changed, 58 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/flat.h b/arch/blackfin/include/asm/flat.h
new file mode 100644
index 00000000000..e70074e05f4
--- /dev/null
+++ b/arch/blackfin/include/asm/flat.h
@@ -0,0 +1,58 @@
+/*
+ * include/asm-blackfin/flat.h -- uClinux flat-format executables
+ *
+ * Copyright (C) 2003,
+ *
+ */
+
+#ifndef __BLACKFIN_FLAT_H__
+#define __BLACKFIN_FLAT_H__
+
+#include <asm/unaligned.h>
+
+#define flat_stack_align(sp) /* nothing needed */
+#define flat_argvp_envp_on_stack() 0
+#define flat_old_ram_flag(flags) (flags)
+
+extern unsigned long bfin_get_addr_from_rp (unsigned long *ptr,
+ unsigned long relval,
+ unsigned long flags,
+ unsigned long *persistent);
+
+extern void bfin_put_addr_at_rp(unsigned long *ptr, unsigned long addr,
+ unsigned long relval);
+
+/* The amount by which a relocation can exceed the program image limits
+ without being regarded as an error. */
+
+#define flat_reloc_valid(reloc, size) ((reloc) <= (size))
+
+#define flat_get_addr_from_rp(rp, relval, flags, persistent) \
+ bfin_get_addr_from_rp(rp, relval, flags, persistent)
+#define flat_put_addr_at_rp(rp, val, relval) \
+ bfin_put_addr_at_rp(rp, val, relval)
+
+/* Convert a relocation entry into an address. */
+static inline unsigned long
+flat_get_relocate_addr (unsigned long relval)
+{
+ return relval & 0x03ffffff; /* Mask out top 6 bits */
+}
+
+static inline int flat_set_persistent(unsigned long relval,
+ unsigned long *persistent)
+{
+ int type = (relval >> 26) & 7;
+ if (type == 3) {
+ *persistent = relval << 16;
+ return 1;
+ }
+ return 0;
+}
+
+static inline int flat_addr_absolute(unsigned long relval)
+{
+ return (relval & (1 << 29)) != 0;
+}
+
+#endif /* __BLACKFIN_FLAT_H__ */