From 99c513f6aced67d96eb2979128b612cfc5f2bc0d Mon Sep 17 00:00:00 2001 From: DJ Delorie Date: Wed, 2 Nov 2011 03:09:11 +0000 Subject: [.] * 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. --- gas/doc/c-rl78.texi | 121 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 121 insertions(+) create mode 100644 gas/doc/c-rl78.texi (limited to 'gas/doc/c-rl78.texi') diff --git a/gas/doc/c-rl78.texi b/gas/doc/c-rl78.texi new file mode 100644 index 0000000..356439a --- /dev/null +++ b/gas/doc/c-rl78.texi @@ -0,0 +1,121 @@ +@c Copyright 2011 +@c Free Software Foundation, Inc. +@c This is part of the GAS manual. +@c For copying conditions, see the file as.texinfo. +@ifset GENERIC +@page +@node RL78-Dependent +@chapter RL78 Dependent Features +@end ifset +@ifclear GENERIC +@node Machine Dependencies +@chapter RL78 Dependent Features +@end ifclear + +@cindex RL78 support +@menu +* RL78-Opts:: RL78 Assembler Command Line Options +* RL78-Modifiers:: Symbolic Operand Modifiers +* RL78-Directives:: Assembler Directives +* RL78-Float:: Floating Point +* RL78-Syntax:: Syntax +@end menu + +@node RL78-Opts +@section RL78 Options +@cindex options, RL78 +@cindex RL78 options + +The Renesas RL78 port of @code{@value{AS}} has no target-specific +options. + +@node RL78-Modifiers +@section Symbolic Operand Modifiers + +@cindex RL78 modifiers +@cindex syntax, RL78 + +The RL78 has three modifiers that adjust the relocations used by the +linker: + +@table @code + +@item %lo16() + +When loading a 20-bit (or wider) address into registers, this modifier +selects the 16 least significant bits. + +@smallexample + movw ax,#%lo16(_sym) +@end smallexample + +@item %hi16() + +When loading a 20-bit (or wider) address into registers, this modifier +selects the 16 most significant bits. + +@smallexample + movw ax,#%hi16(_sym) +@end smallexample + +@item %hi8() + +When loading a 20-bit (or wider) address into registers, this modifier +selects the 8 bits that would go into CS or ES (i.e. bits 23..16). + +@smallexample + mov es, #%hi8(_sym) +@end smallexample + +@end table + +@node RL78-Directives +@section Assembler Directives + +@cindex assembler directives, RL78 +@cindex RL78 assembler directives + +In addition to the common directives, the RL78 adds these: + +@table @code + +@item .double +Output a constant in ``double'' format, which is a 32-bit floating +point value on RL78. + +@item .bss +Select the BSS section. + +@item .3byte +Output a constant value in a three byte format. + +@item .int +@itemx .word +Output a constant value in a four byte format. + +@end table + +@node RL78-Syntax +@section Syntax for the RL78 +@menu +* RL78-Chars:: Special Characters +@end menu + +@node RL78-Chars +@subsection Special Characters + +@cindex line comment character, RL78 +@cindex RL78 line comment character +The presence of a @samp{;} appearing anywhere on a line indicates the +start of a comment that extends to the end of that line. + +If a @samp{#} appears as the first character of a line then the whole +line is treated as a comment, but in this case the line can also be a +logical line number directive (@pxref{Comments}) or a preprocessor +control command (@pxref{Preprocessing}). + +@cindex line separator, RL78 +@cindex statement separator, RL78 +@cindex RL78 line separator +The @samp{|} character can be used to separate statements on the same +line. -- cgit v1.1