計(jì)算機(jī)組成結(jié)構(gòu)化方法7

1、Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 The Assembly Language LevelChapter 7Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Why Use

2、Assembly Language?Comparison of assembly language and high-level language programming, with and without tuning.Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Format of an Assembly Language Statement (1)Computation of N

3、= I + J. (a) Pentium 4.Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Format of an Assembly Language Statement (2)Computation of N = I + J. (b) Motorola 680 x0.Tanenbaum, Structured Computer Organization, Fifth Edition,

4、 (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Format of an Assembly Language Statement (3)Computation of N = I + J. (c) SPARC.Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Pseudoinstructions (1)S

5、ome of the pseudoinstructions available in the Pentium 4 assembler (MASM).Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Pseudoinstructions (2)Some of the pseudoinstructions available in the Pentium 4 assembler (MASM).T

6、anenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Macro Definition, Call, Expansion (1)Assembly language code for interchanging P and Q twice. (a) Without a macro. (b) With a macro.Tanenbaum, Structured Computer Organizatio

7、n, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Macro Definition, Call, Expansion (2)Comparison of macro calls with procedure calls.Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Ma

8、cros with ParametersNearly identical sequences of statements.(a) Without a macro. (b) With a macro.Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Two Pass Assemblers (1)The instruction location counter (ILC) keeps track

9、 of the addresswhere the instructions will be loaded in memory. In this example, the statements prior to MARIA occupy 100 bytes.Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Two Pass Assemblers (2)A symbol table for th

10、e program of Fig. 7-7.Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Two Pass Assemblers (3)A few excerpts from the opcode table for a Pentium 4 assembler.Tanenbaum, Structured Computer Organization, Fifth Edition, (c)

11、2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Pass One (1)Pass one of a simple assembler. . .Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Pass One (2)Pass one of a simple assembler. . . . .Tanenbaum,

12、 Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Pass One (3)Pass one of a simple assembler. . .Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Pass Tw

13、o (1)Pass two of a simple assembler. . .Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Pass Two (2)Pass two of a simple assembler. . .Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Educatio

14、n, Inc. All rights reserved. 0-13-148521-0 The Symbol Table (1)Hash coding. (a) Symbols, values, and the hash codes derived from the symbols.Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 The Symbol Table (2)Hash coding

15、. (b) Eight-entry hash table with linked lists of symbols and values.Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Linking and Loading Generation of an executable binary program from a collection ofindependently transl

16、ated source procedures requires using a linker.Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Tasks Performed by the Linker (1)Each module has its own address space, starting at 0.Tanenbaum, Structured Computer Organiza

17、tion, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Tasks Performed by the Linker (2)Each module has its own address space, starting at 0.Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521

18、-0 Tasks Performed by the Linker (3)Each module has its own address space, starting at 0.Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Tasks Performed by the Linker (4)Each module has its own address space, starting at

19、 0.Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Tasks Performed by the Linker (5) The object modules of Fig. 7-14 after being positioned in the binary image but before being relocated and linked.Tanenbaum, Structured

20、Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Tasks Performed by the Linker (6) The same object modules after linking and after relocation has been performed. Together they form an executable binary program, ready to run Tanenbaum, Structur

21、ed Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Structure of an Object ModuleThe internal structure of an object module produced by a translator.Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0 Binding Time and Dynamic