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* configure.ac (rl78-*-*) New case. * configure: Regenerate. [bfd] * Makefile.am (ALL_MACHINES): Add cpu-rl78.lo. (ALL_MACHINES_CFILES): Add cpu-rl78.c. (BFD32_BACKENDS): Add elf32-rl78.lo. (BFD32_BACKENDS_CFILES): Add elf32-rl78.c. (Makefile.in): Regenerate. * archures.c (bfd_architecture): Define bfd_arch_rl78. (bfd_archures_list): Add bfd_rl78_arch. * config.bfd: Add rl78-*-elf. * configure.in: Add bfd_elf32_rl78_vec. * reloc.c (bfd_reloc_code_type): Add BFD_RELOC_RL78_* relocations. * targets.c (bfd_target_vector): Add bfd_elf32_rl78_vec. * Makefile.in: Regenerate. * bfd-in2.h: Regenerate. * configure: Regenerate. * libbfd.h: Regenerate. * cpu-rl78.c: New file. * elf32-rl78.c: New file. [binutils] * readelf.c: Include elf/rl78.h (guess_is_rela): Handle EM_RL78. (dump_relocations): Likewise. (get_machine_name): Likewise. (is_32bit_abs_reloc): Likewise. * NEWS: Mention addition of RL78 support. * MAINTAINERS: Add myself as RL78 port maintainer. [gas] * Makefile.am (TARGET_CPU_CFILES): Add tc-rl78.c. (TARGET_CPU_HFILES): Add rc-rl78.h. (EXTRA_DIST): Add rl78-parse.c and rl78-parse.y. (rl78-parse.c, rl78-parse.h, rl78-parse.o, rl78-defs.h): New rules. * Makefile.in: Regenerate. * configure.in: Add rl78 case. * configure: Regenerate. * configure.tgt: Add rl78 case. * config/rl78-defs.h: New file. * config/rl78-parse.y: New file. * config/tc-rl78.c: New file. * config/tc-rl78.h: New file. * NEWS: Add Renesas RL78. * doc/Makefile.am (c-rl78.texi): New. * doc/Makefile.in: Likewise. * doc/all.texi: Enable it. * doc/as.texi: Add it. [include] * dis-asm.h (print_insn_rl78): Declare. [include/elf] * common.h (EM_RL78, EM_78K0R): New. * rl78.h: New. [include/opcode] * rl78.h: New file. [ld] * Makefile.am (ALL_EMULATION_SOURCES): Add eelf32rl78.c. (+eelf32rl78.c): New rule. * Makefile.in: Regenerate. * configure.tgt: Add rl78-*-* case. * emulparams/elf32rl78.sh: New file. * NEWS: Mention addition of Renesas RL78 support. [opcodes] * Makefile.am (TARGET_LIBOPCODES_CFILES): Add rl78-decode.c and rl78-dis.c. (MAINTAINERCLEANFILES): Add rl78-decode.c. (rl78-decode.c): New rule, built from rl78-decode.opc and opc2c. * Makefile.in: Regenerate. * configure.in: Add bfd_rl78_arch case. * configure: Regenerate. * disassemble.c: Define ARCH_rl78. (disassembler): Add ARCH_rl78 case. * rl78-decode.c: New file. * rl78-decode.opc: New file. * rl78-dis.c: New file.
121 lines
2.8 KiB
Text
121 lines
2.8 KiB
Text
@c Copyright 2011
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@c Free Software Foundation, Inc.
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@c This is part of the GAS manual.
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@c For copying conditions, see the file as.texinfo.
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@ifset GENERIC
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@page
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@node RL78-Dependent
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@chapter RL78 Dependent Features
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@end ifset
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@ifclear GENERIC
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@node Machine Dependencies
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@chapter RL78 Dependent Features
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@end ifclear
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@cindex RL78 support
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@menu
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* RL78-Opts:: RL78 Assembler Command Line Options
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* RL78-Modifiers:: Symbolic Operand Modifiers
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* RL78-Directives:: Assembler Directives
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* RL78-Float:: Floating Point
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* RL78-Syntax:: Syntax
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@end menu
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@node RL78-Opts
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@section RL78 Options
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@cindex options, RL78
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@cindex RL78 options
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The Renesas RL78 port of @code{@value{AS}} has no target-specific
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options.
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@node RL78-Modifiers
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@section Symbolic Operand Modifiers
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@cindex RL78 modifiers
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@cindex syntax, RL78
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The RL78 has three modifiers that adjust the relocations used by the
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linker:
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@table @code
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@item %lo16()
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When loading a 20-bit (or wider) address into registers, this modifier
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selects the 16 least significant bits.
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@smallexample
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movw ax,#%lo16(_sym)
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@end smallexample
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@item %hi16()
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When loading a 20-bit (or wider) address into registers, this modifier
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selects the 16 most significant bits.
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@smallexample
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movw ax,#%hi16(_sym)
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@end smallexample
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@item %hi8()
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When loading a 20-bit (or wider) address into registers, this modifier
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selects the 8 bits that would go into CS or ES (i.e. bits 23..16).
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@smallexample
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mov es, #%hi8(_sym)
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@end smallexample
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@end table
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@node RL78-Directives
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@section Assembler Directives
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@cindex assembler directives, RL78
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@cindex RL78 assembler directives
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In addition to the common directives, the RL78 adds these:
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@table @code
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@item .double
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Output a constant in ``double'' format, which is a 32-bit floating
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point value on RL78.
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@item .bss
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Select the BSS section.
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@item .3byte
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Output a constant value in a three byte format.
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@item .int
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@itemx .word
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Output a constant value in a four byte format.
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@end table
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@node RL78-Syntax
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@section Syntax for the RL78
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@menu
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* RL78-Chars:: Special Characters
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@end menu
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@node RL78-Chars
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@subsection Special Characters
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@cindex line comment character, RL78
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@cindex RL78 line comment character
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The presence of a @samp{;} appearing anywhere on a line indicates the
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start of a comment that extends to the end of that line.
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If a @samp{#} appears as the first character of a line then the whole
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line is treated as a comment, but in this case the line can also be a
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logical line number directive (@pxref{Comments}) or a preprocessor
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control command (@pxref{Preprocessing}).
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@cindex line separator, RL78
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@cindex statement separator, RL78
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@cindex RL78 line separator
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The @samp{|} character can be used to separate statements on the same
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line.
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