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diff --git a/binutils-2.24/gas/doc/c-msp430.texi b/binutils-2.24/gas/doc/c-msp430.texi deleted file mode 100644 index 2927add4..00000000 --- a/binutils-2.24/gas/doc/c-msp430.texi +++ /dev/null @@ -1,363 +0,0 @@ -@c Copyright 2002-2013 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 MSP430-Dependent -@chapter MSP 430 Dependent Features -@end ifset -@ifclear GENERIC -@node Machine Dependencies -@chapter MSP 430 Dependent Features -@end ifclear - -@cindex MSP 430 support -@cindex 430 support -@menu -* MSP430 Options:: Options -* MSP430 Syntax:: Syntax -* MSP430 Floating Point:: Floating Point -* MSP430 Directives:: MSP 430 Machine Directives -* MSP430 Opcodes:: Opcodes -* MSP430 Profiling Capability:: Profiling Capability -@end menu - -@node MSP430 Options -@section Options -@cindex MSP 430 options (none) -@cindex options for MSP430 (none) -@table @code - -@item -mmcu -selects the mpu arch. If the architecture is 430Xv2 then this also -enables NOP generation unless the @option{-mN} is also specified. - -@item -mcpu -selects the cpu architecture. If the architecture is 430Xv2 then this -also enables NOP generation unless the @option{-mN} is also -specified. - -@item -mP -enables polymorph instructions handler. - -@item -mQ -enables relaxation at assembly time. DANGEROUS! - -@item -ml -indicates that the input uses the large code model. - -@item -mN -disables the generation of a NOP instruction following any instruction -that might change the interrupts enabled/disabled state. For the -430Xv2 architecture the instructions: @code{EINT}, @code{DINT}, -@code{BIC #8, SR}, @code{BIS #8, SR} and @code{MOV.W <>, SR} must be -followed by a NOP instruction in order to ensure the correct -processing of interrupts. By default generation of the NOP -instruction happens automatically, but this command line option -disables this behaviour. It is then up to the programmer to ensure -that interrupts are enabled and disabled correctly. - -@item -md -mark the object file as one that requires data to copied from ROM to -RAM at execution startup. Disabled by default. - -@end table - -@node MSP430 Syntax -@section Syntax -@menu -* MSP430-Macros:: Macros -* MSP430-Chars:: Special Characters -* MSP430-Regs:: Register Names -* MSP430-Ext:: Assembler Extensions -@end menu - -@node MSP430-Macros -@subsection Macros - -@cindex Macros, MSP 430 -@cindex MSP 430 macros -The macro syntax used on the MSP 430 is like that described in the MSP -430 Family Assembler Specification. Normal @code{@value{AS}} -macros should still work. - -Additional built-in macros are: - -@table @code - -@item llo(exp) -Extracts least significant word from 32-bit expression 'exp'. - -@item lhi(exp) -Extracts most significant word from 32-bit expression 'exp'. - -@item hlo(exp) -Extracts 3rd word from 64-bit expression 'exp'. - -@item hhi(exp) -Extracts 4rd word from 64-bit expression 'exp'. - -@end table - -They normally being used as an immediate source operand. -@smallexample - mov #llo(1), r10 ; == mov #1, r10 - mov #lhi(1), r10 ; == mov #0, r10 -@end smallexample - -@node MSP430-Chars -@subsection Special Characters - -@cindex line comment character, MSP 430 -@cindex MSP 430 line comment character -A semicolon (@samp{;}) appearing anywhere on a line starts 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 it can also be a logical line number -directive (@pxref{Comments}) or a preprocessor control command -(@pxref{Preprocessing}). - -@cindex line separator, MSP 430 -@cindex statement separator, MSP 430 -@cindex MSP 430 line separator -Multiple statements can appear on the same line provided that they are -separated by the @samp{@{} character. - -@cindex identifiers, MSP 430 -@cindex MSP 430 identifiers -The character @samp{$} in jump instructions indicates current location and -implemented only for TI syntax compatibility. - -@node MSP430-Regs -@subsection Register Names - -@cindex MSP 430 register names -@cindex register names, MSP 430 -General-purpose registers are represented by predefined symbols of the -form @samp{r@var{N}} (for global registers), where @var{N} represents -a number between @code{0} and @code{15}. The leading -letters may be in either upper or lower case; for example, @samp{r13} -and @samp{R7} are both valid register names. - -@cindex special purpose registers, MSP 430 -Register names @samp{PC}, @samp{SP} and @samp{SR} cannot be used as register names -and will be treated as variables. Use @samp{r0}, @samp{r1}, and @samp{r2} instead. - - -@node MSP430-Ext -@subsection Assembler Extensions -@cindex MSP430 Assembler Extensions - -@table @code - -@item @@rN -As destination operand being treated as @samp{0(rn)} - -@item 0(rN) -As source operand being treated as @samp{@@rn} - -@item jCOND +N -Skips next N bytes followed by jump instruction and equivalent to -@samp{jCOND $+N+2} - -@end table - -Also, there are some instructions, which cannot be found in other assemblers. -These are branch instructions, which has different opcodes upon jump distance. -They all got PC relative addressing mode. - -@table @code -@item beq label -A polymorph instruction which is @samp{jeq label} in case if jump distance -within allowed range for cpu's jump instruction. If not, this unrolls into -a sequence of -@smallexample - jne $+6 - br label -@end smallexample - -@item bne label -A polymorph instruction which is @samp{jne label} or @samp{jeq +4; br label} - -@item blt label -A polymorph instruction which is @samp{jl label} or @samp{jge +4; br label} - -@item bltn label -A polymorph instruction which is @samp{jn label} or @samp{jn +2; jmp +4; br label} - -@item bltu label -A polymorph instruction which is @samp{jlo label} or @samp{jhs +2; br label} - -@item bge label -A polymorph instruction which is @samp{jge label} or @samp{jl +4; br label} - -@item bgeu label -A polymorph instruction which is @samp{jhs label} or @samp{jlo +4; br label} - -@item bgt label -A polymorph instruction which is @samp{jeq +2; jge label} or @samp{jeq +6; jl +4; br label} - -@item bgtu label -A polymorph instruction which is @samp{jeq +2; jhs label} or @samp{jeq +6; jlo +4; br label} - -@item bleu label -A polymorph instruction which is @samp{jeq label; jlo label} or @samp{jeq +2; jhs +4; br label} - -@item ble label -A polymorph instruction which is @samp{jeq label; jl label} or @samp{jeq +2; jge +4; br label} - -@item jump label -A polymorph instruction which is @samp{jmp label} or @samp{br label} -@end table - - -@node MSP430 Floating Point -@section Floating Point - -@cindex floating point, MSP 430 (@sc{ieee}) -@cindex MSP 430 floating point (@sc{ieee}) -The MSP 430 family uses @sc{ieee} 32-bit floating-point numbers. - -@node MSP430 Directives -@section MSP 430 Machine Directives - -@cindex machine directives, MSP 430 -@cindex MSP 430 machine directives -@table @code -@cindex @code{file} directive, MSP 430 -@item .file -This directive is ignored; it is accepted for compatibility with other -MSP 430 assemblers. - -@quotation -@emph{Warning:} in other versions of the @sc{gnu} assembler, @code{.file} is -used for the directive called @code{.app-file} in the MSP 430 support. -@end quotation - -@cindex @code{line} directive, MSP 430 -@item .line -This directive is ignored; it is accepted for compatibility with other -MSP 430 assemblers. - -@cindex @code{arch} directive, MSP 430 -@item .arch -Sets the target microcontroller in the same way as the @option{-mmcu} -command line option. - -@cindex @code{cpu} directive, MSP 430 -@item .cpu -Sets the target architecture in the same way as the @option{-mcpu} -command line option. - -@cindex @code{profiler} directive, MSP 430 -@item .profiler -This directive instructs assembler to add new profile entry to the object file. - -@end table - -@node MSP430 Opcodes -@section Opcodes - -@cindex MSP 430 opcodes -@cindex opcodes for MSP 430 -@code{@value{AS}} implements all the standard MSP 430 opcodes. No -additional pseudo-instructions are needed on this family. - -For information on the 430 machine instruction set, see @cite{MSP430 -User's Manual, document slau049d}, Texas Instrument, Inc. - -@node MSP430 Profiling Capability -@section Profiling Capability - -@cindex MSP 430 profiling capability -@cindex profiling capability for MSP 430 -It is a performance hit to use gcc's profiling approach for this tiny target. -Even more -- jtag hardware facility does not perform any profiling functions. -However we've got gdb's built-in simulator where we can do anything. - -We define new section @samp{.profiler} which holds all profiling information. -We define new pseudo operation @samp{.profiler} which will instruct assembler to -add new profile entry to the object file. Profile should take place at the -present address. - -Pseudo operation format: - -@samp{.profiler flags,function_to_profile [, cycle_corrector, extra]} - - -where: - -@table @code - -@table @code - -@samp{flags} is a combination of the following characters: - -@item s -function entry -@item x -function exit -@item i -function is in init section -@item f -function is in fini section -@item l -library call -@item c -libc standard call -@item d -stack value demand -@item I -interrupt service routine -@item P -prologue start -@item p -prologue end -@item E -epilogue start -@item e -epilogue end -@item j -long jump / sjlj unwind -@item a -an arbitrary code fragment -@item t -extra parameter saved (a constant value like frame size) -@end table - -@item function_to_profile -a function address -@item cycle_corrector -a value which should be added to the cycle counter, zero if omitted. -@item extra -any extra parameter, zero if omitted. - -@end table - -For example: -@smallexample -.global fxx -.type fxx,@@function -fxx: -.LFrameOffset_fxx=0x08 -.profiler "scdP", fxx ; function entry. - ; we also demand stack value to be saved - push r11 - push r10 - push r9 - push r8 -.profiler "cdpt",fxx,0, .LFrameOffset_fxx ; check stack value at this point - ; (this is a prologue end) - ; note, that spare var filled with - ; the farme size - mov r15,r8 -... -.profiler cdE,fxx ; check stack - pop r8 - pop r9 - pop r10 - pop r11 -.profiler xcde,fxx,3 ; exit adds 3 to the cycle counter - ret ; cause 'ret' insn takes 3 cycles -@end smallexample |