Some concepts:
eBBlock
- A basic block. I cant remeber the conditions, but a basic block
+ A basic block. I can't remember the conditions, but a basic block
is one that is easy to optimise and analyse. I guess this means that it has
a nice set of assignments and a reasonably straight flow.
iCode
Remove any unneded iTemps that are just used in assignments.
Mark anything that can be rematerialised as rematerialisable.
There is no way I spelt that correctly. Something is rematerialisable
- if it can be generated easily and is constant, and hence dosnt need
+ if it can be generated easily and is constant, and hence dosn't need
to be cached away in an iTemp. An example is the address of something.
- Packs iTemps that are only used once into normally unavailble registers.
+ Packs iTemps that are only used once into normally unavailable registers.
Register packing removes unneeded iTemps.
-2. Determine what number and type of regsiters are needed for each
+2. Determine what number and type of registers are needed for each
live range.
It does
- If the iTemp lives for zero time, dont bother assigning
+ If the iTemp lives for zero time, don't bother assigning
If its not an iTemp, skip for now.
If its a conditional (determined in the register packing), skip as it will
be stored in carry.
iCode when this icode is allocated.
->seq - sequence number of the iCode given in
- acesnding order of execution.
+ ascending order of execution.
operand.
-------
is sizeof(char) == 1. It's either a SPECIFIER or a DECLARATOR - seems that
were the wrong way around. This is set in SDCCsymt.c, SDCCval.c, and the
yacc file. SDCCsymt.c and SDCCval.c havnt really changed in 5 days - must
-be SDCC.y. Nope, no changes. diff against 5 days ago shows only intersting
+be SDCC.y. Nope, no changes. diff against 5 days ago shows only interesting
changes are in SDCCicode. Same with -14 days.
Michael
\end_layout
\begin_layout Standard
-into seperate sections/chapters/appendices (it is hard to document PIC or
+into separate sections/chapters/appendices (it is hard to document PIC or
Z80 in
\end_layout
file as well.
The library files created with sdcclib are plain text files, so they can
be viewed with a text editor.
- It is not recomended to modify a library file created with sdcclib using
- a text editor, as there are file indexes numbers located accross the file
+ It is not recommended to modify a library file created with sdcclib using
+ a text editor, as there are file indexes numbers located across the file
used by the linker to quickly locate the required module to link.
Once a .rel file (as well as a .adb file) is added to a library using sdcclib,
it can be safely deleted, since all the information required for linking
\end_inset
- is specified for a local variable, it will NOT be overlayed.
+ is specified for a local variable, it will NOT be overlaid.
\end_layout
\begin_layout Standard
\end_inset
- will NOT be overlayed since these are implemented using external functions,
+ will NOT be overlaid since these are implemented using external functions,
e.g.:
\end_layout
from an interrupt service routine.
The #pragma\InsetSpace ~
nooverlay ensures that the parameters and local variables for
- the function are NOT overlayed.
+ the function are NOT overlaid.
\begin_inset VSpace bigskip
\end_inset
\end_layout
\begin_layout Standard
-On other architectures which have seperate opcodes for enabling and disabling
+On other architectures which have separate opcodes for enabling and disabling
interrupts you might want to make use of defines with inline assembly
\begin_inset LatexCommand index
name "Assembler routines"
crtstart.asm
\emph default
- and when linking your project explicitely specify
+ and when linking your project explicitly specify
\emph on
crtstart.rel
\emph default
manually, or when there is a secondary, manually defined interrupt vector
table (e.g.
for the autovector feature of the Cypress EZ-USB FX2).
- More elegantly this can be achieved by obmitting the optional interrupt
+ More elegantly this can be achieved by omitting the optional interrupt
number after the interrupt keyword, see section
\begin_inset LatexCommand ref
reference "sub:Interrupt-Service-Routines"
(+ | -) - switch _asm _endasm block preprocessing on / off.
Default is on.
- You use this prama to define multilines of assembly code.
- This will prevent the preprocessor from changing the formating required
+ You use this pragma to define multilines of assembly code.
+ This will prevent the preprocessor from changing the formatting required
by assembly code.
Below is an example on how to use this pragma.
\end_layout
\begin_layout Standard
Functions that need to be in a switched bank must be put in a named segment.
- The name can be mostly anything upto eight characters (e.g.
+ The name can be mostly anything up to eight characters (e.g.
BANK1).
To do this you either use -
\begin_inset ERT
\newline
Due to the way sdcc handles functions, place called functions prior
to calling functions in the file wherever possible: Otherwise sdcc will
- insert unneccessary pagesel directives around the call, believing that
+ insert unnecessary pagesel directives around the call, believing that
the called function is externally defined.
\end_layout
device/lib/pic/Makefile
\family default
to reflect your device.
- This might even improve performance for smaller devices as unneccesary
+ This might even improve performance for smaller devices as unnecessary
BANKSELs might be removed.
\end_layout
\end_inset
--pstack-model=[model] Used in conjuction with the command above.
+-pstack-model=[model] Used in conjunction with the command above.
Defines the stack model to be used, valid stack models are:
\end_layout
\end_layout
\begin_layout Subsection
-Enviroment Variables
+Environment Variables
\end_layout
\begin_layout Standard
-There is a number of enviromental variables that can be used when running
+There is a number of environmental variables that can be used when running
SDCC to enable certain optimizations or force a specific program behaviour.
these variables are primarily for debugging purposes so they can be enabled/dis
abled at will.
\begin_layout Standard
\noindent
-This feature allows for linking with specific libraries withoug having to
+This feature allows for linking with specific libraries without having to
explicit name them in the command line.
Note that the
\noun on
\emph on
Interrupt Vector Address
\emph default
- which points at the genetated ISR.
+ which points at the generated ISR.
This single GOTO instruction is part of an automatically generated
\emph on
interrupt entry point
Address of the specific interrupt.
This is not a problem for the LOW priority interrupts, but it is a problem
for the RESET and the HIGH priority interrupts because code may be written
- at the next interrupt's vector address and cause undeterminate program
+ at the next interrupt's vector address and cause indeterminate program
behaviour if that interrupt is raised.
\begin_inset Foot
status open
buf
\emph default
should normally be a data pointer where the resulting string will be placed.
- No range checking is done so the user should allocate the necessery buffer.
+ No range checking is done so the user should allocate the necessary buffer.
For fprintf and vfprintf
\emph on
fp
\begin_inset Text
\begin_layout Standard
-descritpion
+description
\end_layout
\end_inset
status open
\begin_layout Standard
-Check that the double quotes or an apostroph within the command line survive
+Check that the double quotes or an apostrophe within the command line survive
the LyX tool chain.
- Previously the apostrophs got slanted in the PDF output so a cut and paste
+ Previously the apostrophes got slanted in the PDF output so a cut and paste
did not work.
\end_layout
\end_layout
\begin_layout Itemize
-check that the compilers are not told to supress warnings.
+check that the compilers are not told to suppress warnings.
\end_layout
\begin_layout Itemize
\end_layout
\begin_layout Enumerate
-give back to the public as you are probably at least partially publically
+give back to the public as you are probably at least partially publicly
funded
\end_layout
\begin_layout Enumerate
-give students a chance to publically prove their skills and to possibly
+give students a chance to publicly prove their skills and to possibly
see a world wide impact
\end_layout
\end_layout
\begin_layout Standard
-The latest publically available version of the standard
+The latest publicly available version of the standard
\emph on
ISO/IEC 9899 - Programming languages - C
\emph default
projects / fw / sdcc / commitdiff