[bfd]

	* reloc.c: Remove unused M32C relocs, add BFD_RELOC_M32C_HI8.
	* libbfd.h: Regenerate.
	* bfd-in2.h: Regenerate.

	* elf32-m32c.c (m32c_elf_howto_table): Add R_M32C_8, R_M32C_LO16,
	R_M32C_HI8, R_M32C_HI16.
	(m32c_reloc_map): Likewise.
	(m32c_elf_relocate_section): Add R_M32C_HI8 and R_M32C_HI16.

[cpu]
	* m32c.opc (parse_unsigned8): Add %dsp8().
	(parse_signed8): Add %hi8().
	(parse_unsigned16): Add %dsp16().
	(parse_signed16): Add %lo16() and %hi16().
	(parse_lab_5_3): Make valuep a bfd_vma *.

[gas]
	* config/tc-m32c.c (md_cgen_lookup_reloc): Add 8 bit operands.
	Support %mod() modifiers from opcodes.
	* doc/c-m32c.texi (M32C-Modifiers): New section.

[include/elf]

	* m32c.h: Add R_M32C_8, R_M32C_LO16, R_M32C_HI8, and R_M32C_HI16.

[opcodes]
	* m32c-asm.c Regenerate.
	* m32c-dis.c Regenerate.

1 files changed, 68 insertions, 0 deletions

diff --git a/gas/doc/c-m32c.texi b/gas/doc/c-m32c.texi
index 83cda7d..a49fe20 100644
--- a/gas/doc/c-m32c.texi
+++ b/gas/doc/c-m32c.texi
@@ -21,6 +21,7 @@ change the default to the M32C microprocessor.
 
 @menu
 * M32C-Opts::                   M32C Options
+* M32C-Modifiers::              Symbolic Operand Modifiers
 @end menu
  
 @node M32C-Opts
@@ -46,3 +47,70 @@ Assemble M32C instructions.
 Assemble M16C instructions (default).
  
 @end table
+
+@node M32C-Modifiers
+@section Symbolic Operand Modifiers
+
+@cindex M32C modifiers
+@cindex syntax, M32C
+
+The assembler supports several modifiers when using symbol addresses
+in M32C instruction operands.  The general syntax is the following:
+
+@smallexample
+%modifier(symbol)
+@end smallexample
+
+@table @code
+@cindex symbol modifiers
+
+@item %dsp8
+@itemx %dsp16
+
+These modifiers override the assembler's assumptions about how big a
+symbol's address is.  Normally, when it sees an operand like
+@samp{sym[a0]} it assumes @samp{sym} may require the widest
+displacement field (16 bits for @samp{-m16c}, 24 bits for
+@samp{-m32c}).  These modifiers tell it to assume the address will fit
+in an 8 or 16 bit (respectively) unsigned displacement.  Note that, of
+course, if it doesn't actually fit you will get linker errors.  Example:
+
+@smallexample
+mov.w %dsp8(sym)[a0],r1
+mov.b #0,%dsp8(sym)[a0]
+@end smallexample
+
+@item %hi8
+
+This modifier allows you to load bits 16 through 23 of a 24 bit
+address into an 8 bit register.  This is useful with, for example, the
+M16C @samp{smovf} instruction, which expects a 20 bit address in
+@samp{r1h} and @samp{a0}.  Example:
+
+@smallexample
+mov.b #%hi8(sym),r1h
+mov.w #%lo16(sym),a0
+smovf.b
+@end smallexample
+
+@item %lo16
+
+Likewise, this modifier allows you to load bits 0 through 15 of a 24
+bit address into a 16 bit register.
+
+@item %hi16
+
+This modifier allows you to load bits 16 through 31 of a 32 bit
+address into a 16 bit register.  While the M32C family only has 24
+bits of address space, it does support addresses in pairs of 16 bit
+registers (like @samp{a1a0} for the @samp{lde} instruction).  This
+modifier is for loading the upper half in such cases.  Example:
+
+@smallexample
+mov.w #%hi16(sym),a1
+mov.w #%lo16(sym),a0
+@dots{}
+lde.w [a1a0],r1
+@end smallexample
+
+@end table