Compiler Design

It indicates the address of the next instruction to be executed for this process.

These errors can occur when the program is typed onto cards.

Tree organization of symbol table include two link fields, LEFT and RIGHT to each record.

It corresponds to memory allocated via malloc() or operator new[].

A register called the activation base always points to the start address of the TOS record.

These are one common usage of dynamically linked libraries, especially useful when the libraries can be replaced by other libraries with a similar interface, but different functionality.

This loader reads a fixed location on a disk and passes control over to it.

Here, the simplest environment will be, perhaps, a very basic text editor and an assembler program.

If the linked origin is 600, but the 600 the memory location is occupied by the some other programs then the loader generates its own address, it is called the load origin.

It is the process of assigning load addresses to the various parts o the program, adjusting the code and data in the program to reflect the assigned addresses.

It is the universal loop counter, like the variable i in high level languages.

It permits only some byte code sequences in valid programs.

It supported a wide variety of macro facilities and structured programming idioms, including high level constructions for looping, procedure calls and alternation.

It is used to store each label and its corresponding value.

It is a binding performed before the execution of a program begins.

It is to make explicit the hierarchical structure of the incoming token stream by identifying which parts of the token stream should be grouped together.

A LEX source program is consisting of a set of regular expressions together with an action for each regular expression.

It is the gap between the application domains and programming language domains.

Their productions permit arbitrary substitution of string during derivation or reduction, hence they are not relevant to specification of programming languages.

These rules associate meaning with valid statements of the language.

Here, none of whose productions contain two or more consecutive NTs in any RHS alternatives.

It is concerned with construction of target language statements which have the same meaning as a source statement.

This work space is used prior to actual outputting for converting the assembled instructions into the format needed by the loader.

Pseudo operation table indicates the symbolic mnemonic and action to be taken for each pseudo-op in pass 1.

Here, a program can allocate or deallocate memory at arbitrary points during its execution.

This register is used for providing its value for PUSH, POP, CALL and RET instructions.

This register makes data operations much more size efficient, with a single byte STOS instruction to write data out of the accumulator.