gdb.tar

gdb/0000777000175000017500000000000013744365720011247 5ustar  xyshenxyshengdb/act0.c0000777000175000017500000000034013726505354012241 0ustar  xyshenxyshen#include <stdlib.h>
#include <stdio.h>

int findSquare(int a) {
	return a * a;
}

int main(int argc, char** argv) {
	for (int i = 1; i < argc; i++) {
		int a = atoi(argv[i]);
		printf("%d\n", findSquare(a));
	}
	return 0;
}
gdb/act1.c0000777000175000017500000000030313726505354012241 0ustar  xyshenxyshen#include <stdio.h>

int main(int argc, char** argv)
{    
    int ret = printf("%s\n", argv[argc-1]);
    argv[0] = '\0'; // NOOP to force gcc to generate a callq instead of jmp
    return ret;
}gdb/act2.c0000777000175000017500000000032713744364656012260 0ustar  xyshenxyshen#include <string.h>

int stc(char*, char*);

int main(int argc, char** argv)
{
    int ret = stc("cs429", argv[argc-1]);
    argv[0] = '\0';  // NOOP to force gcc to generate a callq instead of jmp
    return ret;
}gdb/act2.s0000777000175000017500000000027513744364647012302 0ustar  xyshenxyshen	.file "act2.s"
	.text
	.global stc
	.type stc, @function
stc:
	.cfi_startproc
    push %rbx
    mov %rsi, %rbx
	call puts
    mov %rbx, %rdi
    call puts
    pop %rbx
	ret
	.cfi_endproc

gdb/act3.c0000777000175000017500000000063213726505354012250 0ustar  xyshenxyshen#include <string.h>
#include <stdlib.h>
#include <stdio.h>

int compare(int a, int b);

int main(int argc, char** argv)
{
    int a,b;
    if (argc!=3) {
       printf("usage: %s num1 num2\n",argv[0]);
       exit(-1);
    }

    a=atoi(argv[1]);
    b=atoi(argv[2]);
    if (compare(a,b)==1) {
       printf("good args!\n");
    }
    else {
       printf("bad numbers, try harder!\n");
    }
    return 0;
}
gdb/act3.s0000777000175000017500000000067413744364647012306 0ustar  xyshenxyshen    .file    "act2b.s"
    .text
    .globl    compare
    .type    compare, @function
compare:
.LFB0:
    .cfi_startproc
    pushq     %rbx
    movq      %rdi, %rbx
    addq      $5, %rbx
    addq      %rsi, %rbx
    cmpq      $15213, %rbx
    sete      %al
    movzbq    %al, %rax
    popq      %rbx
    ret
    .cfi_endproc
.LFE0:
    .size    compare, .-compare
    .ident    "GCC: (GNU) 4.8.1"
    .section    .note.GNU-stack,"",@progbits
gdb/act4.c0000777000175000017500000000140213726505354012245 0ustar  xyshenxyshen#include <stdio.h>
#include <stdlib.h>

void compute(int inArg)
{
    int st;
    inArg *= 3;
    st = inArg & 0xf;
    do {
        switch(st)
        {
            case 0: printf("Finish\n"); inArg = -1; break;
            case 1: inArg *= 2; break;
            case 2: inArg >>= 2; break;
            case 3: inArg &= 1; break;
            case 4: inArg--; break;
            default:  break;
        }
        st = inArg & 0xf;
    } while (inArg >= 0);
}

int main(int argc, char** argv)
{
    int inArg;
    if (argc == 1) {fprintf(stderr, "Please rerun with a positive number argument\n"); return 1;}
    
    inArg = atoi(argv[1]);
    if (inArg < 0) {fprintf(stderr, "Argument was not a positive integer\n"); return 1;}
    compute(inArg);
    
    return 0;
}
gdb/Makefile0000777000175000017500000000065613726505354012720 0ustar  xyshenxyshenCC = gcc
INPUT = act0.c act1.c act2.c act3.c act2.s act3.s act4.c
PROJECT = act0 act1 act2 act3 act4
CFLAGS_OPT_ZERO = --std=c99 -g -O0 -static
CFLAGS = --std=c99 -g -O3 -static

all: $(PROJECT)

$(PROJECT) :  $(INPUT)
	$(CC) $(CFLAGS_OPT_ZERO) act0.c  -o act0
	$(CC) $(CFLAGS) act1.c  -o act1
	$(CC) $(CFLAGS) act2.c act2.s -o act2
	$(CC) $(CFLAGS) act3.c act3.s -o act3
	$(CC) $(CFLAGS) act4.c -o act4

clean:
	rm -f $(PROJECT)