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diff --git a/binutils-2.17/gas/doc/c-d30v.texi b/binutils-2.17/gas/doc/c-d30v.texi deleted file mode 100644 index 731b3441..00000000 --- a/binutils-2.17/gas/doc/c-d30v.texi +++ /dev/null @@ -1,292 +0,0 @@ -@c Copyright (C) 1997 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 D30V-Dependent -@chapter D30V Dependent Features -@end ifset -@ifclear GENERIC -@node Machine Dependencies -@chapter D30V Dependent Features -@end ifclear - -@cindex D30V support -@menu -* D30V-Opts:: D30V Options -* D30V-Syntax:: Syntax -* D30V-Float:: Floating Point -* D30V-Opcodes:: Opcodes -@end menu - -@node D30V-Opts -@section D30V Options -@cindex options, D30V -@cindex D30V options -The Mitsubishi D30V version of @code{@value{AS}} has a few machine -dependent options. - -@table @samp -@item -O -The D30V can often execute two sub-instructions in parallel. When this option -is used, @code{@value{AS}} will attempt to optimize its output by detecting when -instructions can be executed in parallel. - -@item -n -When this option is used, @code{@value{AS}} will issue a warning every -time it adds a nop instruction. - -@item -N -When this option is used, @code{@value{AS}} will issue a warning if it -needs to insert a nop after a 32-bit multiply before a load or 16-bit -multiply instruction. -@end table - -@node D30V-Syntax -@section Syntax -@cindex D30V syntax -@cindex syntax, D30V - -The D30V syntax is based on the syntax in Mitsubishi's D30V architecture manual. -The differences are detailed below. - -@menu -* D30V-Size:: Size Modifiers -* D30V-Subs:: Sub-Instructions -* D30V-Chars:: Special Characters -* D30V-Guarded:: Guarded Execution -* D30V-Regs:: Register Names -* D30V-Addressing:: Addressing Modes -@end menu - - -@node D30V-Size -@subsection Size Modifiers -@cindex D30V size modifiers -@cindex size modifiers, D30V -The D30V version of @code{@value{AS}} uses the instruction names in the D30V -Architecture Manual. However, the names in the manual are sometimes ambiguous. -There are instruction names that can assemble to a short or long form opcode. -How does the assembler pick the correct form? @code{@value{AS}} will always pick the -smallest form if it can. When dealing with a symbol that is not defined yet when a -line is being assembled, it will always use the long form. If you need to force the -assembler to use either the short or long form of the instruction, you can append -either @samp{.s} (short) or @samp{.l} (long) to it. For example, if you are writing -an assembly program and you want to do a branch to a symbol that is defined later -in your program, you can write @samp{bra.s foo}. -Objdump and GDB will always append @samp{.s} or @samp{.l} to instructions which -have both short and long forms. - -@node D30V-Subs -@subsection Sub-Instructions -@cindex D30V sub-instructions -@cindex sub-instructions, D30V -The D30V assembler takes as input a series of instructions, either one-per-line, -or in the special two-per-line format described in the next section. Some of these -instructions will be short-form or sub-instructions. These sub-instructions can be packed -into a single instruction. The assembler will do this automatically. It will also detect -when it should not pack instructions. For example, when a label is defined, the next -instruction will never be packaged with the previous one. Whenever a branch and link -instruction is called, it will not be packaged with the next instruction so the return -address will be valid. Nops are automatically inserted when necessary. - -If you do not want the assembler automatically making these decisions, you can control -the packaging and execution type (parallel or sequential) with the special execution -symbols described in the next section. - -@node D30V-Chars -@subsection Special Characters -@cindex line comment character, D30V -@cindex D30V line comment character -@samp{;} and @samp{#} are the line comment characters. -@cindex sub-instruction ordering, D30V -@cindex D30V sub-instruction ordering -Sub-instructions may be executed in order, in reverse-order, or in parallel. -Instructions listed in the standard one-per-line format will be executed -sequentially unless you use the @samp{-O} option. - -To specify the executing order, use the following symbols: -@table @samp -@item -> -Sequential with instruction on the left first. - -@item <- -Sequential with instruction on the right first. - -@item || -Parallel -@end table - -The D30V syntax allows either one instruction per line, one instruction per line with -the execution symbol, or two instructions per line. For example -@table @code -@item abs r2,r3 -> abs r4,r5 -Execute these sequentially. The instruction on the right is in the right -container and is executed second. - -@item abs r2,r3 <- abs r4,r5 -Execute these reverse-sequentially. The instruction on the right is in the right -container, and is executed first. - -@item abs r2,r3 || abs r4,r5 -Execute these in parallel. - -@item ldw r2,@@(r3,r4) || -@itemx mulx r6,r8,r9 -Two-line format. Execute these in parallel. - -@item mulx a0,r8,r9 -@itemx stw r2,@@(r3,r4) -Two-line format. Execute these sequentially unless @samp{-O} option is -used. If the @samp{-O} option is used, the assembler will determine if -the instructions could be done in parallel (the above two instructions -can be done in parallel), and if so, emit them as parallel instructions. -The assembler will put them in the proper containers. In the above -example, the assembler will put the @samp{stw} instruction in left -container and the @samp{mulx} instruction in the right container. - -@item stw r2,@@(r3,r4) -> -@itemx mulx a0,r8,r9 -Two-line format. Execute the @samp{stw} instruction followed by the -@samp{mulx} instruction sequentially. The first instruction goes in the -left container and the second instruction goes into right container. -The assembler will give an error if the machine ordering constraints are -violated. - -@item stw r2,@@(r3,r4) <- -@itemx mulx a0,r8,r9 -Same as previous example, except that the @samp{mulx} instruction is -executed before the @samp{stw} instruction. -@end table - -@cindex symbol names, @samp{$} in -@cindex @code{$} in symbol names -Since @samp{$} has no special meaning, you may use it in symbol names. - -@node D30V-Guarded -@subsection Guarded Execution -@cindex D30V Guarded Execution -@code{@value{AS}} supports the full range of guarded execution -directives for each instruction. Just append the directive after the -instruction proper. The directives are: - -@table @samp -@item /tx -Execute the instruction if flag f0 is true. -@item /fx -Execute the instruction if flag f0 is false. -@item /xt -Execute the instruction if flag f1 is true. -@item /xf -Execute the instruction if flag f1 is false. -@item /tt -Execute the instruction if both flags f0 and f1 are true. -@item /tf -Execute the instruction if flag f0 is true and flag f1 is false. -@end table - -@node D30V-Regs -@subsection Register Names -@cindex D30V registers -@cindex registers, D30V -You can use the predefined symbols @samp{r0} through @samp{r63} to refer -to the D30V registers. You can also use @samp{sp} as an alias for -@samp{r63} and @samp{link} as an alias for @samp{r62}. The accumulators -are @samp{a0} and @samp{a1}. - -The D30V also has predefined symbols for these control registers and status bits: -@table @code -@item psw -Processor Status Word -@item bpsw -Backup Processor Status Word -@item pc -Program Counter -@item bpc -Backup Program Counter -@item rpt_c -Repeat Count -@item rpt_s -Repeat Start address -@item rpt_e -Repeat End address -@item mod_s -Modulo Start address -@item mod_e -Modulo End address -@item iba -Instruction Break Address -@item f0 -Flag 0 -@item f1 -Flag 1 -@item f2 -Flag 2 -@item f3 -Flag 3 -@item f4 -Flag 4 -@item f5 -Flag 5 -@item f6 -Flag 6 -@item f7 -Flag 7 -@item s -Same as flag 4 (saturation flag) -@item v -Same as flag 5 (overflow flag) -@item va -Same as flag 6 (sticky overflow flag) -@item c -Same as flag 7 (carry/borrow flag) -@item b -Same as flag 7 (carry/borrow flag) -@end table - -@node D30V-Addressing -@subsection Addressing Modes -@cindex addressing modes, D30V -@cindex D30V addressing modes -@code{@value{AS}} understands the following addressing modes for the D30V. -@code{R@var{n}} in the following refers to any of the numbered -registers, but @emph{not} the control registers. -@table @code -@item R@var{n} -Register direct -@item @@R@var{n} -Register indirect -@item @@R@var{n}+ -Register indirect with post-increment -@item @@R@var{n}- -Register indirect with post-decrement -@item @@-SP -Register indirect with pre-decrement -@item @@(@var{disp}, R@var{n}) -Register indirect with displacement -@item @var{addr} -PC relative address (for branch or rep). -@item #@var{imm} -Immediate data (the @samp{#} is optional and ignored) -@end table - -@node D30V-Float -@section Floating Point -@cindex floating point, D30V -@cindex D30V floating point -The D30V has no hardware floating point, but the @code{.float} and @code{.double} -directives generates @sc{ieee} floating-point numbers for compatibility -with other development tools. - -@node D30V-Opcodes -@section Opcodes -@cindex D30V opcode summary -@cindex opcode summary, D30V -@cindex mnemonics, D30V -@cindex instruction summary, D30V -For detailed information on the D30V machine instruction set, see -@cite{D30V Architecture: A VLIW Microprocessor for Multimedia Applications} -(Mitsubishi Electric Corp.). -@code{@value{AS}} implements all the standard D30V opcodes. The only changes are those -described in the section on size modifiers - |