Compiling C Programs Into X86-64 Assembly Programs
|
|
- Verity Norris
- 6 years ago
- Views:
Transcription
1 CSE 2421: Systems I Low-Level Programming and Computer Organization Compiling C Programs Into X86-64 ssembly Programs Part C: rrays & Structure Read/Study: Bryant 3.8, Gojko Babić Statement: long E[5]; 1D rray Example declares E array of 5 elements of data type long int, let x be starting address of the array E, identifier E can be used as a pointer to this array. long E[5]; x x + 8 x + 16 x + 24 x + 32 x + 40 Reference Type R value E[4] long 3 E long* x E+1 long* x + 8 &E[2] long* x + 16 E[5] long?? *(E+1) long 5 E + i long* x + 8* i 2 1
2 1D rray ssembly Code Examples Statement: long E[5]; Let starting address x of the array E be stored in register %rdx, Let integer index i be stored in register %rcx, For each expression, corresponding assembly code stores result in register. Expression Type R Value ssembly code E long * x movq %rdx, E long M[x] movq (%rdx), E[i] long M[x + i*8] movq (%rdx,%rcx,8), &E[2] long * x + 2*8 leaq 16(%rdx), *(E + i 3) long M[x + i*8 3*8] movq 24(%rdx,%rcx,8), E + i 2 long * x + i*8 2*8 leaq 16(%rdx,%rcx,8), &E[i] E long i movq %rcx, g.babic 3 1D rray: i-th Element ccess long get_digit (long *z, long i) urn z[i]; This function urns i-th element of long integer array z. Compilation command: gcc -O1 -S get_digit.c gets this x86-64 assembly code: get_digit: movq (,,8), rgument z rgument i Here is equivalent Y86-64 assembly code: Return value get_digit: addq, addq, addq, addq, mrmovq (), 4 2
3 1D rray: Loop Example void d_inc (long *z, long s) long i; for (i = 0; i < s; i++) z[i]++; Function d_inc increments by 1 first s elements of long integer array z. d_inc: testq, jle.l4 movq $0,.L3: addq $1, (,,8) addq $1, cmpq, jne.l3.l4: rep Compilation command: gcc O1 -S d_inc.c g. babic rgument z rgument s long i, urn value 5 2D rray: Row & Element ddresses [i] is i th row of T [R][C]: it is array of C elements and each element of type T requires K (=8 if long integer) bytes Starting address of i the row : + i * (C * K) Element [i][j] is an element in i th row and j th column ddress of [i][j] = + i * (C * K) + j * K = + (i * C + j)* K Here we assume: long [R][C] [i] [R-1] [C-1] [i] [j] [R-1] [R-1] [C-1] +i*c*8 +(R-1)*C*8 +i*c*8+j*8 6 3
4 2D rray: (i,j) Element ccess (a) long get_2d_digit (long TD[][100], long i,long j) urn TD[i][j]; This function urns element TD[i][j] %rdx rgument TD rgument i rgument j Return value gcc -S -O1 get_2d_digit.c get_2d_digit: leaq (,,4), #=5*i leaq (,,4), #=25*i salq $5, #=800*i leaq (,%rdx,8), %rdx #%rdx=td+8*j movq (%rdx,), #=Mem[TD+800*i+8*j] g. babic 7 Directive.comm declares a named common area in the data section called.bss section..bss section includes global variables and local variables with attribute static. Format:.comm name, size, alignment The.comm directive allocates storage in the.bss section. The storage is referenced by the identifier name. Size is measured in bytes and must be a positive integer. lignment is optional. If alignment is specified, the address of name is aligned to a multiple of alignment. Example:.comm p,8000,32 The storage with 8000 bytes, aligned to 32 is allocated in.bcc section. It can be referenced as p. g. babic.comm Directive 8 4
5 2D rray: (i,j) Element ccess (b) long p[20][100]; long get_2d_digitb(long i, long j) urn p[i][j]; gcc O1 S get_p_digit.c This function urns element p[i][j] Note: p is global rgument i rgument j Return value get_2d_digitb: leaq (,,4), # =5*i leaq (,,4), # =25*i leaq (,,4), # =100*i+j movq p(,,8), # =Mem[p+8*(100*i+j)].comm p,16000,32 g. babic 9 Structures struct rec int a[3]; long b; struct rec *n; ; Concept: refer to members within structure by names members may be of different types contiguously allocated (?) region of memory ccessing member of structure: pointer to the structure indicates first byte of structure access member with offsets x x+16 x+24 a[3] b n
6 Linked List Update typedef struct rec int a[3]; long b; struct rec *n; ListNode; long set_list (ListNode *r, long v) long i=0; while (r) r->b = v; r = r->n; i++; urn i; ListNode *head; long main() long c=5, w; w=set_list(head, c); urn w; main()calls set_list(), with arguments: pointer to link list and integer c. set_list() sets a member b to value c in every node of the list, and urns a number of nodes in the list. x x+16 x+24 a[3] b n Compilation command: gcc -O1 S set_listnew.c 11 Linked List Update (cont.) set_list: movq $0, testq, je.l3.l6: movq, 16() movq 24(), addq $1, testq, jne.l6.l3: rep main: movq $5, movq head(%rip), call set_list rep.comm head,8,8, Use r = next node pointer c = value to set urn value x x+16 x+24 a[3] b n %rip register is the instruction pointer that holds address of the next instruction to be executed. RIP-relative addressing: the memory effective address is determined by adding a displacement to the %rip of the 12 next instruction. 6
Assembly IV: Complex Data Types. Jin-Soo Kim Computer Systems Laboratory Sungkyunkwan University
ssembly IV: Complex Data Types Jin-Soo Kim (jinsookim@skku.edu) Computer Systems Laboratory Sungkyunkwan University http://csl.skku.edu Basic Data Types Integer Stored & operated on in general registers
More informationAssembly IV: Complex Data Types
ssembly IV: Complex Data Types Jinkyu Jeong (jinkyu@skku.edu) Computer Systems Laboratory Sungkyunkwan University http://csl.skku.edu SSE2030: Introduction to Computer Systems, Spring 2018, Jinkyu Jeong
More informationMachine-level Programs Data
Computer Systems Machine-level Programs Data Han, Hwansoo rray llocation Basic Principle T [L]; rray of data type T and length L Contiguously allocated region of L * sizeof(t) bytes in memory char string[12];
More informationMachine Level Programming: Arrays, Structures and More
Machine Level Programming: rrays, Structures and More Computer Systems Organization (Spring 2016) CSCI-U 201, Section 2 Instructor: Joanna Klukowska Slides adapted from Randal E. Bryant and David R. O
More informationArrays. CSE 351 Autumn Instructor: Justin Hsia
rrays CSE 351 utumn 2017 Instructor: Justin Hsia Teaching ssistants: Lucas Wotton Michael Zhang Parker DeWilde Ryan Wong Sam Gehman Sam Wolfson Savanna Yee Vinny Palaniappan http://xkcd.com/1270/ dministrivia
More informationArrays. CSE 351 Autumn Instructor: Justin Hsia
rrays CSE 351 utumn 2016 Instructor: Justin Hsia Teaching ssistants: Chris Ma Hunter Zahn John Kaltenbach Kevin Bi Sachin Mehta Suraj Bhat Thomas Neuman Waylon Huang Xi Liu Yufang Sun http://xkcd.com/1513/
More informationAssembly IV: Complex Data Types. Jin-Soo Kim Computer Systems Laboratory Sungkyunkwan University
ssembly IV: Complex Data Types Jin-Soo Kim (jinsookim@skku.edu) Computer Systems Laboratory Sungkyunkwan University http://csl.skku.edu Basic Data Types Integer Stored & operated on in general registers
More informationCompiling C Programs Into X86-64 Assembly Programs
CSE 2421: Systems I Low-Level Programming and Computer Organization Compiling C Programs Into X86-64 Assembly Programs Part B: If Else, Loops, Recursion & Switch Presentation L Read/Study: Bryant 3.6 Gojko
More informationSystems I. Machine-Level Programming VII: Structured Data
Systems I Machine-Level Programming VII: Structured Data Topics rrays Structs Unions Basic Data Types Integral Stored & operated on in general registers Signed vs. unsigned depends on instructions used
More informationStack Frame Components. Using the Stack (4) Stack Structure. Updated Stack Structure. Caller Frame Arguments 7+ Return Addr Old %rbp
Stack Frame Components Frame pointer %rbp Stack pointer Caller Frame rguments 7+ Return ddr Old %rbp Saved Registers + Local Variables rgument Build 1 Using the Stack (4) Stack Structure long call_incr()
More informationBasic Data Types. CS429: Computer Organization and Architecture. Array Allocation. Array Access
Basic Data Types CS429: Computer Organization and Architecture Dr Bill Young Department of Computer Sciences University of Texas at Austin Last updated: October 31, 2017 at 09:37 Integral Stored and operated
More informationBasic Data Types. Lecture 6A Machine-Level Programming IV: Structured Data. Array Allocation. Array Access Basic Principle
Lecture 6 Machine-Level Programming IV: Structured Data Topics rrays Structs Unions Basic Data Types Integral Stored & operated on in general registers Signed vs. unsigned depends on instructions used
More informationComputer Organization: A Programmer's Perspective
A Programmer's Perspective Machine-Level Programming (4: Data Structures) Gal A. Kaminka galk@cs.biu.ac.il Today Arrays One-dimensional Multi-dimensional (nested) Multi-level Structures Allocation Access
More informationArrays and Structs. CSE 351 Summer Instructor: Justin Hsia. Teaching Assistants: Josie Lee Natalie Andreeva Teagan Horkan.
rrays and Structs CSE 351 Summer 2018 Instructor: Justin Hsia Teaching ssistants: Josie Lee Natalie ndreeva Teagan Horkan http://xkcd.com/1270/ dministrivia Lab 2 due tonight Homework 3 due next Monday
More informationCS429: Computer Organization and Architecture
CS429: Computer Organization and Architecture Dr. Bill Young Department of Computer Sciences University of Texas at Austin Last updated: October 31, 2017 at 09:37 CS429 Slideset 10: 1 Basic Data Types
More informationCompiling C Programs Into x86-64 Assembly Programs
CSE 2421: Systems I Low-Level Programming and Computer Organization Compiling C Programs Into x86-64 Assembly Programs Part A: Function Calling Read/Study: Bryant 3.7.1-3.7.6 Presentation K Gojko Babić
More informationu Arrays One-dimensional Multi-dimensional (nested) Multi-level u Structures Allocation Access Alignment u Floating Point
u Arrays One-dimensional Multi-dimensional (nested) Multi-level u Structures Allocation Access Alignment u Floating Point u Basic Principle T A[L]; Array of data type T and length L Contiguously allocated
More informationCarnegie Mellon. Bryant and O Hallaron, Computer Systems: A Programmer s Perspective, Third Edition
1 Machine-Level Programming IV: Data 15-213/18-213/14-513/15-513: Introduction to Computer Systems 8 th Lecture, September 20, 2018 2 Today Arrays One-dimensional Multi-dimensional (nested) Multi-level
More informationMachine-Level Prog. IV - Structured Data
Machine-Level Prog. IV - Structured Data Today! rrays! Structures! Unions Next time! Buffer overflow, x86-64 Fabián E. Bustamante, 2007 Basic data types! Integral Stored & operated on in general registers
More informationFloating Point Stored & operated on in floating point registers Intel GAS Bytes C Single s 4 float Double l 8 double Extended t 10/12/16 long double
Basic Data Types Integral Stored & operated on in general (integer) registers Signed vs. unsigned depends on instructions used Intel GS Bytes C byte b 1 [unsigned] char word w 2 [unsigned] short double
More informationIntel x86-64 and Y86-64 Instruction Set Architecture
CSE 2421: Systems I Low-Level Programming and Computer Organization Intel x86-64 and Y86-64 Instruction Set Architecture Presentation J Read/Study: Bryant 3.1 3.5, 4.1 Gojko Babić 03-07-2018 Intel x86
More information2 Systems Group Department of Computer Science ETH Zürich. Argument Build 3. %r8d %rax. %r9d %rbx. Argument #6 %rcx. %r10d %rcx. Static chain ptr %rdx
Last Time Lecture 7: More procedures; array access Computer rchitecture and Systems Programming (252-0061-00) Timothy Roscoe Herbstsemester 2012 For loops - goto version goto jump to middle version Jump
More informationExecutables & Arrays. CSE 351 Autumn Instructor: Justin Hsia
Executables & rrays CSE 351 utumn 2018 Instructor: Justin Hsia Teaching ssistants: kshat ggarwal n Wang ndrew Hu Brian Dai Britt Henderson James Shin Kevin Bi Kory Watson Riley Germundson Sophie Tian Teagan
More informationBasic Data Types The course that gives CMU its Zip! Machine-Level Programming IV: Data Feb. 5, 2008
Machine-Level Programming IV: Data Feb. 5, 2008 class07.ppt 15-213 The course that gives CMU its Zip! Structured Data rrays Structs Unions Basic Data Types Integral Stored & operated on in general registers
More informationIntegral. ! Stored & operated on in general registers. ! Signed vs. unsigned depends on instructions used
Basic Data Types Machine-Level Programming IV: Structured Data Topics! rrays! Structs! Unions Integral! Stored & operated on in general registers! Signed vs. unsigned depends on instructions used Intel
More informationBasic Data Types The course that gives CMU its Zip! Machine-Level Programming IV: Structured Data Sept. 18, 2003.
Machine-Level Programming IV: Structured Data Sept. 18, 2003 class08.ppt 15-213 The course that gives CMU its Zip! Topics rrays Structs Unions Basic Data Types Integral Stored & operated on in general
More informationMachine/Assembler Language Putting It All Together
COMP 40: Machine Structure and Assembly Language Programming Fall 2015 Machine/Assembler Language Putting It All Together Noah Mendelsohn Tufts University Email: noah@cs.tufts.edu Web: http://www.cs.tufts.edu/~noah
More informationQuestion Points Score Total: 100
Computer Science 2021 Spring 2016 Midterm Exam 1 February 29th, 2016 Time Limit: 50 minutes, 3:35pm-4:25pm This exam contains 7 pages (including this cover page) and 5 questions. Once we tell you to start,
More informationMACHINE LEVEL PROGRAMMING 1: BASICS
MACHINE LEVEL PROGRAMMING 1: BASICS CS 045 Computer Organization and Architecture Prof. Donald J. Patterson Adapted from Bryant and O Hallaron, Computer Systems: A Programmer s Perspective, Third Edition
More informationCSC 252: Computer Organization Spring 2018: Lecture 6
CSC 252: Computer Organization Spring 2018: Lecture 6 Instructor: Yuhao Zhu Department of Computer Science University of Rochester Action Items: Assignment 2 is out Announcement Programming Assignment
More informationMachine- Level Representation: Data
Machine- Level Representation: Data CSCI 2021: Machine Architecture and Organiza8on Pen- Chung Yew Department Computer Science and Engineering University of Minnesota With Slides from Bryant, O Hallaron
More informationSetting & Examining Condition Codes. int gt(long x, long y) { return x > y; } int has_nonzero_masked(long x, long mask) { return!!
Setting & Examining Condition Codes int has_nonzero_masked(long x, long mask) urn!!(x & mask); # x in %rdi, y in %rsi, urn value in %eax has_nonzero_masked: xorl %eax, %eax testq %rsi, %rdi setne %al int
More informationThe Hardware/So=ware Interface CSE351 Winter 2013
The Hardware/So=ware Interface CSE351 Winter 2013 Data Structures I: rrays Data Structures in ssembly rrays One- dimensional Mul:- dimensional (nested) Mul:- level Structs lignment Unions 2 rray llocaeon
More informationMACHINE-LEVEL PROGRAMMING IV: Computer Organization and Architecture
MACHINE-LEVEL PROGRAMMING IV: DATA CS 045 Computer Organization and Architecture Prof. Donald J. Patterson Adapted from Bryant and O Hallaron, Computer Systems: A Programmer s Perspective, Third Edition
More informationGiving credit where credit is due
CSCE 230J Computer Organization Machine-Level Programming IV: Structured Data Giving credit where credit is due Most of slides for this lecture are based on slides created by Drs. Bryant and O Hallaron,
More informationGiving credit where credit is due
CSCE 230J Computer Organization Machine-Level Programming IV: Structured Data Dr. Steve Goddard goddard@cse.unl.edu http://cse.unl.edu/~goddard/courses/csce230j Giving credit where credit is due Most of
More informationx86 Programming II CSE 351 Winter
x86 Programming II CSE 351 Winter 2017 http://xkcd.com/1652/ Administrivia 2 Address Computation Instruction v leaq src, dst lea stands for load effective address src is address expression (any of the
More informationPage 1. Basic Data Types CISC 360. Machine-Level Programming IV: Structured Data Sept. 24, Array Access. Array Allocation.
CISC 360 Basic Data Types Machine-Level Programming IV: Structured Data Sept. 24, 2008 2 CISC 360, Fa09 rray llocation rray ccess char string[12]; int val[5]; 1 5 2 1 3 int val[5]; x x + 12 x x + 4 x +
More informationDynamic Memory Allocation and Linked Lists
CSE 2421: Systems I Low-Level Programming and Computer Organization Dynamic Memory Allocation and Linked Lists Presentation I Read/Study: Reek Chapter 11 & 12 Gojko Babić 02-26-2017 Functions malloc and
More informationBuilding an Executable
Building an Executable CSE 351 Summer 2018 Instructor: Justin Hsia Teaching Assistants: Josie Lee Natalie Andreeva Teagan Horkan http://xkcd.com/1790/ Administrivia Lab 2 due Monday (7/16) Homework 3 due
More informationAssembly Programming IV
Assembly Programming IV CSE 351 Spring 2017 Instructor: Ruth Anderson Teaching Assistants: Dylan Johnson Kevin Bi Linxing Preston Jiang Cody Ohlsen Yufang Sun Joshua Curtis 1 Administrivia Homework 2 due
More informationAssembly III: Procedures. Jin-Soo Kim Computer Systems Laboratory Sungkyunkwan University
Assembly III: Procedures Jin-Soo Kim (jinsookim@skku.edu) Computer Systems Laboratory Sungkyunkwan University http://csl.skku.edu Mechanisms in Procedures Passing control To beginning of procedure code
More informationMachine-Level Programming III: Procedures
Machine-Level Programming III: Procedures CSE 238/2038/2138: Systems Programming Instructor: Fatma CORUT ERGİN Slides adapted from Bryant & O Hallaron s slides Mechanisms in Procedures Passing control
More informationReferencing Examples
Referencing Examples zip_dig cmu; 1 5 2 1 3 16 20 24 28 32 36 zip_dig mit; 0 2 1 3 9 36 40 44 48 52 56 zip_dig nwu; 6 0 2 0 1 56 60 64 68 72 76 Code Does Not Do ny Bounds Checking! Reference ddress Value
More informationThe Stack & Procedures
The Stack & Procedures CSE 351 Spring 2017 Instructor: Ruth Anderson Teaching Assistants: Dylan Johnson Kevin Bi Linxing Preston Jiang Cody Ohlsen Yufang Sun Joshua Curtis Administrivia Homework 2 due
More informationMachine-Level Programming II: Control
Machine-Level Programming II: Control CSE 238/2038/2138: Systems Programming Instructor: Fatma CORUT ERGİN Slides adapted from Bryant & O Hallaron s slides 1 Today Control: Condition codes Conditional
More informationPrinceton University Computer Science 217: Introduction to Programming Systems. Assembly Language: Function Calls
Princeton University Computer Science 217: Introduction to Programming Systems Assembly Language: Function Calls 1 Goals of this Lecture Help you learn: Function call problems x86-64 solutions Pertinent
More informationAssembly I: Basic Operations. Jin-Soo Kim Computer Systems Laboratory Sungkyunkwan University
Assembly I: Basic Operations Jin-Soo Kim (jinsookim@skku.edu) Computer Systems Laboratory Sungkyunkwan University http://csl.skku.edu Basic Execution Environment RAX RBX RCX RDX RSI RDI RBP RSP R8 R9 R10
More informationL09: Assembly Programming III. Assembly Programming III. CSE 351 Spring Guest Lecturer: Justin Hsia. Instructor: Ruth Anderson
Assembly Programming III CSE 351 Spring 2017 Guest Lecturer: Justin Hsia Instructor: Ruth Anderson Teaching Assistants: Dylan Johnson Kevin Bi Linxing Preston Jiang Cody Ohlsen Yufang Sun Joshua Curtis
More informationMachine-Level Programming II: Control
Mellon Machine-Level Programming II: Control CS140 Computer Organization and Assembly Slides Courtesy of: Randal E. Bryant and David R. O Hallaron 1 First https://www.youtube.com/watch?v=ivuu8jobb1q 2
More informationCS201- Lecture 7 IA32 Data Access and Operations Part II
CS201- Lecture 7 IA32 Data Access and Operations Part II RAOUL RIVAS PORTLAND STATE UNIVERSITY Announcements 2 Address Computation Examples %rdx %rcx 0xf000 0x0100 movq 8(%rdx),%rax movq (%rdx,%rcx),%rax
More informationL14: Structs and Alignment. Structs and Alignment. CSE 351 Spring Instructor: Ruth Anderson
Structs and Alignment CSE 351 Spring 2017 Instructor: Ruth Anderson Teaching Assistants: Dylan Johnson Kevin Bi Linxing Preston Jiang Cody Ohlsen Yufang Sun Joshua Curtis Administrivia Lab 2 due TONIGHT
More informationx86-64 Programming III & The Stack
x86-64 Programming III & The Stack CSE 351 Winter 2018 Instructor: Mark Wyse Teaching Assistants: Kevin Bi Parker DeWilde Emily Furst Sarah House Waylon Huang Vinny Palaniappan http://xkcd.com/1652/ Administrative
More informationCS 33. Architecture and Optimization (1) CS33 Intro to Computer Systems XV 1 Copyright 2017 Thomas W. Doeppner. All rights reserved.
CS 33 Architecture and Optimization (1) CS33 Intro to Computer Systems XV 1 Copyright 2017 Thomas W. Doeppner. All rights reserved. Simplistic View of Processor while (true) { instruction = mem[rip]; execute(instruction);
More informationx86 Programming I CSE 351 Winter
x86 Programming I CSE 351 Winter 2017 http://xkcd.com/409/ Administrivia Lab 2 released! Da bomb! Go to section! No Luis OH Later this week 2 Roadmap C: car *c = malloc(sizeof(car)); c->miles = 100; c->gals
More informationx86 64 Programming II
x86 64 Programming II CSE 351 Autumn 2018 Instructor: Justin Hsia Teaching Assistants: Akshat Aggarwal An Wang Andrew Hu Brian Dai Britt Henderson James Shin Kevin Bi Kory Watson Riley Germundson Sophie
More informationMachine-level Programs Procedure
Computer Systems Machine-level Programs Procedure Han, Hwansoo Mechanisms in Procedures Passing control To beginning of procedure code Back to return point Passing data Procedure arguments Return value
More informationMachine Level Programming: Control
Machine Level Programming: Control Computer Systems Organization (Spring 2017) CSCI-UA 201, Section 3 Instructor: Joanna Klukowska Slides adapted from Randal E. Bryant and David R. O Hallaron (CMU) Mohamed
More informationL08: Assembly Programming II. Assembly Programming II. CSE 351 Spring Guest Lecturer: Justin Hsia. Instructor: Ruth Anderson
Assembly Programming II CSE 351 Spring 2017 Guest Lecturer: Justin Hsia Instructor: Ruth Anderson Teaching Assistants: Dylan Johnson Kevin Bi Linxing Preston Jiang Cody Ohlsen Yufang Sun Joshua Curtis
More informationAreas for growth: I love feedback
Assembly part 2 1 Areas for growth: I love feedback Speed, I will go slower. Clarity. I will take time to explain everything on the slides. Feedback. I give more Kahoot questions and explain each answer.
More informationIntroduction to Computer Systems , fall th Lecture, Sep. 14 th
Introduction to Computer Systems 15 213, fall 2009 7 th Lecture, Sep. 14 th Instructors: Majd Sakr and Khaled Harras Last Time For loops for loop while loop do while loop goto version for loop while loop
More informationMachine-Level Programming (2)
Machine-Level Programming (2) Yanqiao ZHU Introduction to Computer Systems Project Future (Fall 2017) Google Camp, Tongji University Outline Control Condition Codes Conditional Branches and Conditional
More information6.1. CS356 Unit 6. x86 Procedures Basic Stack Frames
6.1 CS356 Unit 6 x86 Procedures Basic Stack Frames 6.2 Review of Program Counter (Instruc. Pointer) PC/IP is used to fetch an instruction PC/IP contains the address of the next instruction The value in
More informationComputer Organization and Architecture
CS 045 Computer Organization and Architecture Prof. Donald J. Patterson Adapted from Bryant and O Hallaron, Computer Systems: A Programmer s Perspective, Third Edition OVERVIEW GENERALLY USEFUL OPTIMIZATIONS
More informationCSE 351 Section 4 GDB and x86-64 Assembly Hi there! Welcome back to section, we re happy that you re here
CSE 351 Section 4 GDB and x86-64 Assembly Hi there! Welcome back to section, we re happy that you re here x86-64 Assembly Language Assembly language is a human-readable representation of machine code instructions
More informationStructs & Alignment. CSE 351 Autumn Instructor: Justin Hsia
Structs & Alignment CSE 351 Autumn 2018 Instructor: Justin Hsia Teaching Assistants: Akshat Aggarwal An Wang Andrew Hu Brian Dai Britt Henderson James Shin Kevin Bi Kory Watson Riley Germundson Sophie
More informationx86 64 Programming I CSE 351 Autumn 2017 Instructor: Justin Hsia
x86 64 Programming I CSE 351 Autumn 2017 Instructor: Justin Hsia Teaching Assistants: Lucas Wotton Michael Zhang Parker DeWilde Ryan Wong Sam Gehman Sam Wolfson Savanna Yee Vinny Palaniappan Administrivia
More informationAssembly Language: Function Calls
Assembly Language: Function Calls 1 Goals of this Lecture Help you learn: Function call problems x86-64 solutions Pertinent instructions and conventions 2 Function Call Problems (1) Calling and returning
More informationRoadmap. Java: Assembly language: OS: Machine code: Computer system:
Roadmap C: car *c = malloc(sizeof(car)); c->miles = 100; c->gals = 17; float mpg = get_mpg(c); free(c); Assembly language: Machine code: Computer system: get_mpg: pushq movq... popq ret %rbp %rsp, %rbp
More informationCSC 252: Computer Organization Spring 2018: Lecture 14
CSC 252: Computer Organization Spring 2018: Lecture 14 Instructor: Yuhao Zhu Department of Computer Science University of Rochester Action Items: Mid-term: March 8 (Thursday) Announcements Mid-term exam:
More informationBryant and O Hallaron, Computer Systems: A Programmer s Perspective, Third Edition. Carnegie Mellon
Carnegie Mellon Machine-Level Programming III: Procedures 15-213/18-213/14-513/15-513: Introduction to Computer Systems 7 th Lecture, September 18, 2018 Today Procedures Mechanisms Stack Structure Calling
More informationProcedures and the Call Stack
Procedures and the Call Stack Topics Procedures Call stack Procedure/stack instructions Calling conventions Register-saving conventions Why Procedures? Why functions? Why methods? int contains_char(char*
More informationCSE 401/M501 Compilers
CSE 401/M501 Compilers x86-64 Lite for Compiler Writers A quick (a) introduction or (b) review [pick one] Hal Perkins Autumn 2018 UW CSE 401/M501 Autumn 2018 J-1 Administrivia HW3 due tonight At most 1
More informationAssembly II: Control Flow. Jin-Soo Kim Computer Systems Laboratory Sungkyunkwan University
Assembly II: Control Flow Jin-Soo Kim (jinsookim@skku.edu) Computer Systems Laboratory Sungkyunkwan University http://csl.skku.edu Processor State (x86-64) RAX 63 31 EAX 0 RBX EBX RCX RDX ECX EDX General-purpose
More information2/12/2016. Today. Machine-Level Programming II: Control. Condition Codes (Implicit Setting) Processor State (x86-64, Partial)
Today Machine-Level Programming II: Control CSci 2021: Machine Architecture and Organization Lectures #9-11, February 8th-12th, 2016 Control: Condition codes Conditional branches Loops Switch Statements
More informationStructs and Alignment CSE 351 Spring
Structs and Alignment CSE 351 Spring 2018 http://xkcd.com/1168/ Administrivia Homework 3 due Wednesday Lab 3 released, due next week Lab 2 and midterm will be graded this week [in that order] 2 Roadmap
More informationAssembly II: Control Flow
Assembly II: Control Flow Jinkyu Jeong (jinkyu@skku.edu) Computer Systems Laboratory Sungkyunkwan University http://csl.skku.edu SSE2030: Introduction to Computer Systems, Spring 2018, Jinkyu Jeong (jinkyu@skku.edu)
More informationCS 3330 Exam 1 Fall 2017 Computing ID:
S 3330 Fall 2017 xam 1 Variant page 1 of 8 mail I: S 3330 xam 1 Fall 2017 Name: omputing I: Letters go in the boxes unless otherwise specified (e.g., for 8 write not 8 ). Write Letters clearly: if we are
More informationLecture 7: More procedures; array access Computer Architecture and Systems Programming ( )
Systems Group Department of Computer Science ETH Zürich Lecture 7: More procedures; array access Computer Architecture and Systems Programming (252-0061-00) Timothy Roscoe Herbstsemester 2012 1 Last Time
More informationData Representa/ons: IA32 + x86-64
X86-64 Instruc/on Set Architecture Instructor: Sanjeev Se(a 1 Data Representa/ons: IA32 + x86-64 Sizes of C Objects (in Bytes) C Data Type Typical 32- bit Intel IA32 x86-64 unsigned 4 4 4 int 4 4 4 long
More informationCPSC 261 Midterm 1 Tuesday February 9th, 2016
CPSC 261 Midterm 1 Tuesday February 9th, 2016 [10] 1. Short Answers [2] a. Two CPUs support the same instruction set, and use the same amount of power. CPU A s latency and throughput are both 10% lower
More informationCS 3330 Exam 3 Fall 2017 Computing ID:
S 3330 Fall 2017 Exam 3 Variant E page 1 of 16 Email I: S 3330 Exam 3 Fall 2017 Name: omputing I: Letters go in the boxes unless otherwise specified (e.g., for 8 write not 8 ). Write Letters clearly: if
More informationThe Stack & Procedures
The Stack & Procedures CSE 351 Autumn 2017 Instructor: Justin Hsia Teaching Assistants: Lucas Wotton Michael Zhang Parker DeWilde Ryan Wong Sam Gehman Sam Wolfson Savanna Yee Vinny Palaniappan http://xkcd.com/648/
More informationMachine-Level Programming I: Basics
Machine-Level Programming I: Basics CSE 238/2038/2138: Systems Programming Instructor: Fatma CORUT ERGİN Slides adapted from Bryant & O Hallaron s slides 1 Today: Machine Programming I: Basics History
More informationCS429: Computer Organization and Architecture
CS429: Computer Organization and Architecture Dr. Bill Young Department of Computer Sciences University of Texas at Austin Last updated: February 28, 2018 at 06:32 CS429 Slideset 9: 1 Mechanisms in Procedures
More informationLecture 4: x86_64 Assembly Language
CSCI-GA.1144-001 PAC II Lecture 4: x86_64 Assembly Language Some slides adapted (and slightly modified) from: Randy Bryant Dave O Hallaron Mohamed Zahran (aka Z) mzahran@cs.nyu.edu http://www.mzahran.com
More informationStructs and Alignment
Structs and Alignment CSE 410 Winter 2017 Instructor: Justin Hsia Teaching Assistants: Kathryn Chan, Kevin Bi, Ryan Wong, Waylon Huang, Xinyu Sui Self Driving Cars Will Make Organ Shortages Even Worse
More informationMachine Level Programming: Basics
Machine Level Programming: Basics Computer Systems Organization (Spring 2017) CSCI-UA 201, Section 2 Instructor: Joanna Klukowska Slides adapted from Randal E. Bryant and David R. O Hallaron (CMU) Mohamed
More informationMachine Language CS 3330 Samira Khan
Machine Language CS 3330 Samira Khan University of Virginia Feb 2, 2017 AGENDA Logistics Review of Abstractions Machine Language 2 Logistics Feedback Not clear Hard to hear Use microphone Good feedback
More informationCarnegie Mellon. Bryant and O Hallaron, Computer Systems: A Programmer s Perspective, Third Edition
Synchronization: Basics 53: Introduction to Computer Systems 4 th Lecture, November 6, 7 Instructor: Randy Bryant Today Threads review Sharing Mutual exclusion Semaphores 3 Traditional View of a Process
More informationCache Memories. Lecture, Oct. 30, Bryant and O Hallaron, Computer Systems: A Programmer s Perspective, Third Edition
Cache Memories Lecture, Oct. 30, 2018 1 General Cache Concept Cache 84 9 14 10 3 Smaller, faster, more expensive memory caches a subset of the blocks 10 4 Data is copied in block-sized transfer units Memory
More informationSynchronization: Basics
Synchronization: Basics CS 485G6: Systems Programming Lecture 34: 5 Apr 6 Shared Variables in Threaded C Programs Question: Which variables in a threaded C program are shared? The answer is not as simple
More informationMachine Level Programming: Basics
Machine Level Programming: Basics Computer Systems Organization (Spring 2017) CSCI-UA 201, Section 2 Instructor: Joanna Klukowska Why do we look at machine code? understanding how the high-level programming
More informationCS 107. Lecture 13: Assembly Part III. Friday, November 10, Stack "bottom".. Earlier Frames. Frame for calling function P. Increasing address
CS 107 Stack "bottom" Earlier Frames Lecture 13: Assembly Part III Argument n Friday, November 10, 2017 Computer Systems Increasing address Argument 7 Frame for calling function P Fall 2017 Stanford University
More informationCSE 2421: Systems I Low-Level Programming and Computer Organization. Linking. Presentation N. Introduction to Linkers
CSE 2421: Systems I Low-Level Programming and Computer Organization Linking Read/Study: Bryant 7.1 7.10 Gojko Babić 11-15-2017 Introduction to Linkers Linking is the process of collecting and combining
More informationCSE 401 Compilers. x86-64 Lite for Compiler Writers A quick (a) introduccon or (b) review. Hal Perkins Winter UW CSE 401 Winter 2017 J-1
CSE 401 Compilers x86-64 Lite for Compiler Writers A quick (a) introduccon or (b) review [pick one] Hal Perkins Winter 2017 UW CSE 401 Winter 2017 J-1 Agenda Overview of x86-64 architecture Core part only,
More informationMachine Programming 4: Structured Data
Machine Programming 4: Structured Data CS61, Lecture 6 Prof. Stephen Chong September 20, 2011 Announcements Assignment 2 (Binary bomb) due Thursday We are trying out Piazza to allow class-wide questions
More informationCS429: Computer Organization and Architecture
CS429: Computer Organization and Architecture Dr. Bill Young Department of Computer Sciences University of Texas at Austin Last updated: March 5, 2018 at 05:33 CS429 Slideset 11: 1 Alignment CS429 Slideset
More informationWhere We Are. Optimizations. Assembly code. generation. Lexical, Syntax, and Semantic Analysis IR Generation. Low-level IR code.
Where We Are Source code if (b == 0) a = b; Low-level IR code Optimized Low-level IR code Assembly code cmp $0,%rcx cmovz %rax,%rdx Lexical, Syntax, and Semantic Analysis IR Generation Optimizations Assembly
More informationUniversity of Washington
Roadmap C: car *c = malloc(sizeof(car)); c->miles = 100; c->gals = 17; float mpg = get_mpg(c); free(c); Assembly language: Machine code: Computer system: get_mpg: pushq %rbp movq %rsp, %rbp... popq %rbp
More information