Understanding the macro aspects of data structures software. As a simple example, in the c programming language, this is a typical macro that is not a parameterized macro. The macro processor provides a list data structure for this. A baseband processor for software defined radio terminals by hyunseok lee chair. This requires an understanding of the principles of algorithm analysis, and also an. Assemblersbasic assembler functions a simple sic assembler assembler algorithm and data structures machine dependent assembler features instruction formats and addressing modes. Chapter 4 macro processors basic macro processor functions. A finite sequence of steps for accomplishing some computational. References to the macro instruction parameters are converted to a positional notation for efficiency in substituting arguments. The macro name table mnt, used to store the names of defined macros. Macro processor are used in order that programmers can repeat identical parts of their program macro facility can be used. Using macros in c to define data structures stack overflow. A macro short for macroinstruction, from greek long in computer science is a rule or pattern that specifies how a certain input sequence often a sequence of characters should be mapped to a replacement output sequence also often a sequence of characters according to a defined procedure.
Algorithm is a stepbystep procedure, which defines a set of instructions to be executed in a certain order to get the desired output. In particular the goal of this paper is to explore the algorithm and data structure design space of. By exploiting a common construction found in most nonblocking data structures, we created a move operation that can atomically move elements between different types of nonblocking data structures, without requiring a speci. What is the scope and demand of data structures and. Macro definition and expansion macro processor algorithm and data structures. Twopass macro processor o twopass macro processor n pass1. A macro consists of a name, a set of formal parameters and a body of code. Data structures required for macro definition processing. However, because of the onepass structure, the definition of a macro must appear in the source program before any statements that invoke that macro. Computer science e119 data structures harvard university.
The third data structure is an argument table argtab, which is used during the expansion of macro invocations. Each data structure and each algorithm has costs and bene. From the data structure point of view, following are some. The structure of limp allows it to be used as a pre.
The left block shows the macro definition and the right block shows the expanded macro replacing the macro call with its block of executable instruction. Twopass macro processor you may design a twopass macro processor o pass 1. A generalpurpose macro processor or general purpose preprocessor is a macro processor that is not tied to or integrated with a particular language or piece of software a macro processor is a program that copies a stream of text from one place to another, making a systematic set of replacements as it does so. The name is entered into macro name table along with a pointer to the first location of mdt entry of. Using macro instructions programmer can leave the mechanical details to be handled by the macro processor. Computer science e119 data structures harvard university extension school fall 2012 syllabus overview a survey of fundamental data structures for information processing, including lists, stacks, queues, trees, and graphs. If it is a macro pseudoop, the entire macro definition except this macro line is stored in mdt. In the library all operations are defined as macros. Data structures the macro names are entered into namtab, namtab contains. For the richtext part, your data structure have to save two things. Macro calling in high level programming languages c programming.
Fourth, we generate the automata codes on ap with a macrobased construction algorithm. The definition of a data structure is a bit more involved we begin with the notion of an. This gives the macro some of the power of a function. System software and machine architecture the simplified instructional computer sic machine architecture data and instruction formats addressing modes instruction sets io and programming. Namtab stores macro names serves as an index to deftab. Shortest path problem find the shortest paths from one vertex to all other vertices. Feb 21, 2018 onepass macro processor a onepass macro processor that alternate between macro definition and macro expansion is able to handle macro in macro.
However, using programmable hardware for sdr terminals has been. All macro invocation statements are expanded during the second pass. Macro expansion assembly statement replace macro as a result of macro call note actual parameter get substituted instead of formal parameter and as a result the macro is said to be expanded eg. Pdf a language independent macroprocessor researchgate. Here you can download the power system software vtu notes pdf ss pdf vtu of as per vtu syllabus. Macro processor parameter computer programming macro. In sociology, macrostructures, often simply called structure, correspond to the overall organization of society, described at a rather largescale level, featuring for instance social groups, organizations, institutions, nationstates and their respective properties and relations.
Dec 06, 2011 algorithm pass1 of macro processor makes a linebyline scan over its input. Practitioners need a thorough understanding of how to assess costs and bene. Math 203 the list processing algorithm an algorithm is a speci. Understanding the macro aspects of data structures. But in most of time its a overkill because of complexity. Expand all macro invocation statements however, onepass may be enough. Ssv pdf notes unit 6 cse branch downloads smartworld. Here you will need to provide assembly program containing macro as input in macin. Relational algorithms for multibulksynchronous processors. Macro processor algorithm andmacro processor algorithm and data structuresdata structures because of the onepass structure, the definition of a macro must appear in the source ppg yrogram before any statements that invoke that macro three main data structures involved in anthree main data structures involved in an onepass macro processor.
Pattern matching algorithms brute force, the boyer moore algorithm, the knuthmorrispratt algorithm, standard tries, compressed tries, suffix tries. System software vtu notes pdf ss pdf vtu smartzworld. Pdf the fhdl florida hardware design language macro processor provides a mechanism for extending the. Macro processor overview basic functions features machine independent. Macro processors macro processor algorithm and data structures for onepass macro processor, the definition of a.
The arguments are stored in argtab according to their. In other words, you have to have some kind of markup language. A onepass macro processor that can alternate between macro definition and macro expansion. Jun 06, 2011 macro processor is a program that lets you define the code that is reused many times giving it a specific macro name and reuse the code by just writing the macro name only. There are many data structure can handle the character part. Third, we extend a group of building blocks to a cascadable ap macro by adding and merging inputoutput ports. A macro processor is described which can be used with al. Ch4 macro processors macro computer science central. Macro processor designs are not directly related to the computer architecture on which it runs. The word scanner reads the generated text from the input stack, and tokenizes it. Algorithms are generally created independent of underlying languages, i.
It is easy to design a twopass macro processor in which all macro definitions are processed during the first pass, and all macro invocation statements are expanded during the second pass. The macro processor places the text on top of the input stack and waits for the word scanner to begin tokenization. Basic macro processor functions macro invocation often referred to as a macro call need the name of the macro instruction begin invoked and the arguments to be used in expanding the macro expanded program figure 5. Basic macro processor functions macro definitions and expansion, macro processor algorithm and data structures, machineindependent macro processor features concatenation of macro parameters, generation of unique labels, conditional macro expansion, keyword macro parameters, macro processor design options recursive. A parameterized macro is a macro that is able to insert given objects into its expansion. A macro prototype statement one or more model statements macro preprocessor statements the macro prototype statement declares the name of a macro and the names and kinds of its parameters. Concise notes on data structures and algorithms ruby edition christopher fox james madison university 2011. Macro is that the section of code that the programmer writes defines once, and then can use or invokes many times. Every macro begins with macro keyword at the beginning and ends with the endm end macro. It made clear that decisions about structuring data cannot be made without knowledge of the algorithms applied to the data and that, vice versa, the structure and choice of algorithms often depend strongly on the structure. Twopass macro processor would not allow the body of one macro instruction to contain definitions of other macros. We have chosen to organize most of the material by problem domain and not by solution technique.
Fourth, we generate the automata codes on ap with a macro based construction algorithm. A course in data structures and algorithms is thus a course in implementing abstract data. Submacro definitions are only processed when an invocation of their supermacros. Pseudo code tutorial and exercises teacher s version pseudocode is an. Given the same input data, two people following the algorithm should produce the exact same output. Macro definitions are typically located at the start of a program. Data structures for onepass macro processor deftab definition table stores the macro definition including macro prototype and macro body comment lines are omitted. Macro processors macro processor algorithm and data.
And now it should be clear why we study data structures and algorithms together. Unitivmacro processor sri eshwar free download as pdf file. The macro processor executes the compiled %do instructin and recognizes that the next item is text. Algorithms applications 5 arithmetic operations 2 array 8 basics 27 compiler design 1 control statements 4 conversion functions 1 data structures 12 data type 1 date functions 1 file 36 keywords 1 loops 1 math functions 30 math snippets 43 memory management 3 misc.
Macro processor replace each macro instruction with the corresponding group of source language statements. Basic macro processor functions macro definitions and expansion, macro processor algorithm and data structures, machineindependent macro processor features concatenation of macro parameters, generation of unique. Algorithm pass1 of macro processor makes a linebyline scan over its input. A macro is a unit of specification for program generation through expansion. This means that the algorithm should specify how decisions are made at every. Concurrent algorithms and data structures for manycore. The term data structure is used to denote a particular way of organizing data for particular types of operation. A onepass macro processor that alternate between macro definition and macro expansion in a recursive way is able to handle recursive macro definition. I am trying to wrap my head around the concept of using macros to define data structure operations. Basic macro processor functions macro definition and expansion macro processor algorithm and data structures machineindependent.
Source code in the textbook can be found by following the link. We use this approach to develop a framework, robotomata, for approximate pattern matching apm applications. Unitivmacro processor sri eshwar macro computer science. Generally it doesnt come as a separate program but as a bundle to either assembler or compiler. The output macro source deck copy for use by pass 2 3. Because of the onepass structure, the definition of a macro must appear in the source program before any statements that invoke that macro.
So the resultant of the macro code is shown on the right most side of the figure. Algorithm procedure define called when the beginning of a macro definition is recognized. The macro definition table mbt, used to store the body of the macro definitions. The mapping process that instantiates transforms a macro use into a specific. It made clear that decisions about structuring data cannot be made without knowledge of the algorithms applied to the data and that, vice versa, the structure and choice of algorithms often depend strongly on the structure of the underlying data. Aug 11, 2015 here is implementation of macro processor in c. In this case, societal macrostructures are distinguished from societal microstructures consisting of the. There are a lot of programs that still demand something like this, and because storage devices are larger and processes are faster, the constant factors for common code parts are not as important as they were twenty years ago. Algorithms applications 5 arithmetic operations 2 array 8 basics 27 compiler design 1 control statements 4 conversion functions 1 data. In particular the goal of this paper is to explore the algorithm and data structure design space of relation algebra operations for a specii c instance of a parallel processor architecture nvidia fermi c2050 and develop strategies that can be adapted to other processors as well. The following code is a simple example to use the built in list library in freebsd. The following are the data bases used by the two passes of the macro processor. Macro processor is a program that lets you define the code that is reused many times giving it a specific macro name and reuse the code by just writing the macro name only.
986 221 1236 169 51 1105 176 737 353 1001 907 600 1363 1038 420 164 1107 536 681 506 403 1124 637 100 850 391 1133 584 715 1409 755 407 567