* as.h (rs_align_test): New.

	* frags.c (NOP_OPCODE): Move default from read.c.
	(MAX_MEM_FOR_RS_ALIGN_CODE): New default.
	(frag_align_code): New.
	* frags.h (frag_align_code): Declare.
	* read.c (NOP_OPCODE): Remove.
	(do_align): Use frag_align_code.
	* write.c (NOP_OPCODE): Remove.
	(get_recorded_alignment): New.
	(cvt_frag_to_fill): Handle rs_align_test.
	(relax_segment): Likewise.
	(subsegs_finish): Align last subseg in section to the
	section alignment.  Use frag_align_code.
	* write.h (get_recorded_alignment): Declare.
	* config/obj-coff.c (size_section): Handle rs_align_test.
	(fill_section, fixup_mdeps): Likewise.
	(write_object_file): Use frag_align_code.

	* config/tc-alpha.c (alpha_align): Use frag_align_code.
	(alpha_handle_align): New.
	* config/tc-alpha.h (HANDLE_ALIGN): New.
	(MAX_MEM_FOR_RS_ALIGN_CODE): New.

	* config/tc-i386.h (md_do_align): Use frag_align_code.
	(MAX_MEM_FOR_RS_ALIGN_CODE): New.

	* config/tc-ia64.c (ia64_md_do_align): Don't do code alignment.
	(ia64_handle_align): New.
	* config/tc-ia64.h (HANDLE_ALIGN): New.
	(MAX_MEM_FOR_RS_ALIGN_CODE): New.

	* config/tc-m32r.c (m32r_do_align): Remove.
	(m32r_handle_align): New.
	(fill_insn): Use frag_align_code.
	* config/tc-m32r.h (md_do_align): Remove.
	(HANDLE_ALIGN, MAX_MEM_FOR_RS_ALIGN_CODE): New.
	* config/tc-m88k.c, config/tc-m88k.h: Similarly.
	* config/tc-mips.c, config/tc-mips.h: Similarly.

	* config/tc-sh.c (sh_cons_align): Use rs_align_test.
	(sh_handle_align): Likewise.  Handle rs_align_code.
	(sh_do_align): Remove.
	* config/tc-sh.h (md_do_align): Remove.
	(MAX_MEM_FOR_RS_ALIGN_CODE): New.

	* config/tc-sparc.c (sparc_cons_align): Use rs_align_test.
	(sparc_handle_align): Likewise.  Handle rs_align_code.
	* config/tc-sparc.h (md_do_align): Remove.
	(MAX_MEM_FOR_RS_ALIGN_CODE): New.

1 files changed, 33 insertions, 0 deletions

diff --git a/gas/frags.c b/gas/frags.c
index f5a9d9e5e5..f2f8cfefff 100644
--- a/gas/frags.c
+++ b/gas/frags.c
@@ -322,6 +322,39 @@ frag_align_pattern (alignment, fill_pattern, n_fill, max)
   memcpy (p, fill_pattern, n_fill);
 }
 
+/* The NOP_OPCODE is for the alignment fill value.  Fill it with a nop
+   instruction so that the disassembler does not choke on it.  */
+#ifndef NOP_OPCODE
+#define NOP_OPCODE 0x00
+#endif
+
+/* Use this to restrict the amount of memory allocated for representing
+   the alignment code.  Needs to be large enough to hold any fixed sized
+   prologue plus the replicating portion.  */
+#ifndef MAX_MEM_FOR_RS_ALIGN_CODE
+  /* Assume that if HANDLE_ALIGN is not defined then no special action
+     is required to code fill, which means that we get just repeat the
+     one NOP_OPCODE byte.  */
+# ifndef HANDLE_ALIGN
+#  define MAX_MEM_FOR_RS_ALIGN_CODE  1
+# else
+#  define MAX_MEM_FOR_RS_ALIGN_CODE  ((1 << alignment) - 1)
+# endif
+#endif
+
+void
+frag_align_code (alignment, max)
+     int alignment;
+     int max;
+{
+  char *p;
+
+  p = frag_var (rs_align_code, MAX_MEM_FOR_RS_ALIGN_CODE, 1,
+		(relax_substateT) max, (symbolS *) 0,
+		(offsetT) alignment, (char *) 0);
+  *p = NOP_OPCODE;
+}
+
 addressT
 frag_now_fix_octets ()
 {