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diff --git a/gas/doc/c-h8500.texi b/gas/doc/c-h8500.texi new file mode 100644 index 00000000000..10f0e641538 --- /dev/null +++ b/gas/doc/c-h8500.texi @@ -0,0 +1,272 @@ +@c Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. +@c This is part of the GAS manual. +@c For copying conditions, see the file as.texinfo. +@page +@node H8/500-Dependent +@chapter H8/500 Dependent Features + +@cindex H8/500 support +@menu +* H8/500 Options:: Options +* H8/500 Syntax:: Syntax +* H8/500 Floating Point:: Floating Point +* H8/500 Directives:: H8/500 Machine Directives +* H8/500 Opcodes:: Opcodes +@end menu + +@node H8/500 Options +@section Options + +@cindex H8/500 options (none) +@cindex options, H8/500 (none) +@code{@value{AS}} has no additional command-line options for the Hitachi +H8/500 family. + +@node H8/500 Syntax +@section Syntax + +@menu +* H8/500-Chars:: Special Characters +* H8/500-Regs:: Register Names +* H8/500-Addressing:: Addressing Modes +@end menu + +@node H8/500-Chars +@subsection Special Characters + +@cindex line comment character, H8/500 +@cindex H8/500 line comment character +@samp{!} is the line comment character. + +@cindex line separator, H8/500 +@cindex statement separator, H8/500 +@cindex H8/500 line separator +@samp{;} can be used instead of a newline to separate statements. + +@cindex symbol names, @samp{$} in +@cindex @code{$} in symbol names +Since @samp{$} has no special meaning, you may use it in symbol names. + +@node H8/500-Regs +@subsection Register Names + +@cindex H8/500 registers +@cindex registers, H8/500 +You can use the predefined symbols @samp{r0}, @samp{r1}, @samp{r2}, +@samp{r3}, @samp{r4}, @samp{r5}, @samp{r6}, and @samp{r7} to refer to +the H8/500 registers. + +The H8/500 also has these control registers: + +@table @code +@item cp +code pointer + +@item dp +data pointer + +@item bp +base pointer + +@item tp +stack top pointer + +@item ep +extra pointer + +@item sr +status register + +@item ccr +condition code register +@end table + +All registers are 16 bits long. To represent 32 bit numbers, use two +adjacent registers; for distant memory addresses, use one of the segment +pointers (@code{cp} for the program counter; @code{dp} for +@code{r0}--@code{r3}; @code{ep} for @code{r4} and @code{r5}; and +@code{tp} for @code{r6} and @code{r7}. + +@node H8/500-Addressing +@subsection Addressing Modes + +@cindex addressing modes, H8/500 +@cindex H8/500 addressing modes +@value{AS} understands the following addressing modes for the H8/500: +@table @code +@item R@var{n} +Register direct + +@item @@R@var{n} +Register indirect + +@item @@(d:8, R@var{n}) +Register indirect with 8 bit signed displacement + +@item @@(d:16, R@var{n}) +Register indirect with 16 bit signed displacement + +@item @@-R@var{n} +Register indirect with pre-decrement + +@item @@R@var{n}+ +Register indirect with post-increment + +@item @@@var{aa}:8 +8 bit absolute address + +@item @@@var{aa}:16 +16 bit absolute address + +@item #@var{xx}:8 +8 bit immediate + +@item #@var{xx}:16 +16 bit immediate +@end table + +@node H8/500 Floating Point +@section Floating Point + +@cindex floating point, H8/500 (@sc{ieee}) +@cindex H8/500 floating point (@sc{ieee}) +The H8/500 family has no hardware floating point, but the @code{.float} +directive generates @sc{ieee} floating-point numbers for compatibility +with other development tools. + +@node H8/500 Directives +@section H8/500 Machine Directives + +@cindex H8/500 machine directives (none) +@cindex machine directives, H8/500 (none) +@cindex @code{word} directive, H8/500 +@cindex @code{int} directive, H8/500 +@code{@value{AS}} has no machine-dependent directives for the H8/500. +However, on this platform the @samp{.int} and @samp{.word} directives +generate 16-bit numbers. + +@node H8/500 Opcodes +@section Opcodes + +@cindex H8/500 opcode summary +@cindex opcode summary, H8/500 +@cindex mnemonics, H8/500 +@cindex instruction summary, H8/500 +For detailed information on the H8/500 machine instruction set, see +@cite{H8/500 Series Programming Manual} (Hitachi M21T001). + +@code{@value{AS}} implements all the standard H8/500 opcodes. No additional +pseudo-instructions are needed on this family. + +@ifset SMALL +@c this table, due to the multi-col faking and hardcoded order, looks silly +@c except in smallbook. See comments below "@set SMALL" near top of this file. + +The following table summarizes H8/500 opcodes and their operands: + +@c Use @group if it ever works, instead of @page +@page +@smallexample +@i{Legend:} +abs8 @r{8-bit absolute address} +abs16 @r{16-bit absolute address} +abs24 @r{24-bit absolute address} +crb @r{@code{ccr}, @code{br}, @code{ep}, @code{dp}, @code{tp}, @code{dp}} +disp8 @r{8-bit displacement} +ea @r{@code{rn}, @code{@@rn}, @code{@@(d:8, rn)}, @code{@@(d:16, rn)},} + @r{@code{@@-rn}, @code{@@rn+}, @code{@@aa:8}, @code{@@aa:16},} + @r{@code{#xx:8}, @code{#xx:16}} +ea_mem @r{@code{@@rn}, @code{@@(d:8, rn)}, @code{@@(d:16, rn)},} + @r{@code{@@-rn}, @code{@@rn+}, @code{@@aa:8}, @code{@@aa:16}} +ea_noimm @r{@code{rn}, @code{@@rn}, @code{@@(d:8, rn)}, @code{@@(d:16, rn)},} + @r{@code{@@-rn}, @code{@@rn+}, @code{@@aa:8}, @code{@@aa:16}} +fp r6 +imm4 @r{4-bit immediate data} +imm8 @r{8-bit immediate data} +imm16 @r{16-bit immediate data} +pcrel8 @r{8-bit offset from program counter} +pcrel16 @r{16-bit offset from program counter} +qim @r{@code{-2}, @code{-1}, @code{1}, @code{2}} +rd @r{any register} +rs @r{a register distinct from rd} +rlist @r{comma-separated list of registers in parentheses;} + @r{register ranges @code{rd-rs} are allowed} +sp @r{stack pointer (@code{r7})} +sr @r{status register} +sz @r{size; @samp{.b} or @samp{.w}. If omitted, default @samp{.w}} + +ldc[.b] ea,crb bcc[.w] pcrel16 +ldc[.w] ea,sr bcc[.b] pcrel8 +add[:q] sz qim,ea_noimm bhs[.w] pcrel16 +add[:g] sz ea,rd bhs[.b] pcrel8 +adds sz ea,rd bcs[.w] pcrel16 +addx sz ea,rd bcs[.b] pcrel8 +and sz ea,rd blo[.w] pcrel16 +andc[.b] imm8,crb blo[.b] pcrel8 +andc[.w] imm16,sr bne[.w] pcrel16 +bpt bne[.b] pcrel8 +bra[.w] pcrel16 beq[.w] pcrel16 +bra[.b] pcrel8 beq[.b] pcrel8 +bt[.w] pcrel16 bvc[.w] pcrel16 +bt[.b] pcrel8 bvc[.b] pcrel8 +brn[.w] pcrel16 bvs[.w] pcrel16 +brn[.b] pcrel8 bvs[.b] pcrel8 +bf[.w] pcrel16 bpl[.w] pcrel16 +bf[.b] pcrel8 bpl[.b] pcrel8 +bhi[.w] pcrel16 bmi[.w] pcrel16 +bhi[.b] pcrel8 bmi[.b] pcrel8 +bls[.w] pcrel16 bge[.w] pcrel16 +bls[.b] pcrel8 bge[.b] pcrel8 +@page +blt[.w] pcrel16 mov[:g][.b] imm8,ea_mem +blt[.b] pcrel8 mov[:g][.w] imm16,ea_mem +bgt[.w] pcrel16 movfpe[.b] ea,rd +bgt[.b] pcrel8 movtpe[.b] rs,ea_noimm +ble[.w] pcrel16 mulxu sz ea,rd +ble[.b] pcrel8 neg sz ea +bclr sz imm4,ea_noimm nop +bclr sz rs,ea_noimm not sz ea +bnot sz imm4,ea_noimm or sz ea,rd +bnot sz rs,ea_noimm orc[.b] imm8,crb +bset sz imm4,ea_noimm orc[.w] imm16,sr +bset sz rs,ea_noimm pjmp abs24 +bsr[.b] pcrel8 pjmp @@rd +bsr[.w] pcrel16 pjsr abs24 +btst sz imm4,ea_noimm pjsr @@rd +btst sz rs,ea_noimm prtd imm8 +clr sz ea prtd imm16 +cmp[:e][.b] imm8,rd prts +cmp[:i][.w] imm16,rd rotl sz ea +cmp[:g].b imm8,ea_noimm rotr sz ea +cmp[:g][.w] imm16,ea_noimm rotxl sz ea +Cmp[:g] sz ea,rd rotxr sz ea +dadd rs,rd rtd imm8 +divxu sz ea,rd rtd imm16 +dsub rs,rd rts +exts[.b] rd scb/f rs,pcrel8 +extu[.b] rd scb/ne rs,pcrel8 +jmp @@rd scb/eq rs,pcrel8 +jmp @@(imm8,rd) shal sz ea +jmp @@(imm16,rd) shar sz ea +jmp abs16 shll sz ea +jsr @@rd shlr sz ea +jsr @@(imm8,rd) sleep +jsr @@(imm16,rd) stc[.b] crb,ea_noimm +jsr abs16 stc[.w] sr,ea_noimm +ldm @@sp+,(rlist) stm (rlist),@@-sp +link fp,imm8 sub sz ea,rd +link fp,imm16 subs sz ea,rd +mov[:e][.b] imm8,rd subx sz ea,rd +mov[:i][.w] imm16,rd swap[.b] rd +mov[:l][.w] abs8,rd tas[.b] ea +mov[:l].b abs8,rd trapa imm4 +mov[:s][.w] rs,abs8 trap/vs +mov[:s].b rs,abs8 tst sz ea +mov[:f][.w] @@(disp8,fp),rd unlk fp +mov[:f][.w] rs,@@(disp8,fp) xch[.w] rs,rd +mov[:f].b @@(disp8,fp),rd xor sz ea,rd +mov[:f].b rs,@@(disp8,fp) xorc.b imm8,crb +mov[:g] sz rs,ea_mem xorc.w imm16,sr +mov[:g] sz ea,rd +@end smallexample +@end ifset |