_wc:     file format elf32-i386


Disassembly of section .text:

00000000 <main>:
        exit();
    }
    printf(1, "%d %d %d %s\n", l, w, c, name);
}

int main(int argc, char *argv[])     {
   0:	8d 4c 24 04          	lea    0x4(%esp),%ecx
   4:	83 e4 f0             	and    $0xfffffff0,%esp
   7:	ff 71 fc             	push   -0x4(%ecx)
   a:	55                   	push   %ebp
   b:	89 e5                	mov    %esp,%ebp
   d:	57                   	push   %edi
   e:	56                   	push   %esi
   f:	be 01 00 00 00       	mov    $0x1,%esi
  14:	53                   	push   %ebx
  15:	51                   	push   %ecx
  16:	83 ec 18             	sub    $0x18,%esp
  19:	8b 01                	mov    (%ecx),%eax
  1b:	8b 59 04             	mov    0x4(%ecx),%ebx
  1e:	89 45 e4             	mov    %eax,-0x1c(%ebp)
  21:	83 c3 04             	add    $0x4,%ebx
    int fd, i;

    if (argc <= 1) {
  24:	83 f8 01             	cmp    $0x1,%eax
  27:	7e 56                	jle    7f <main+0x7f>
  29:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
        wc(0, "");
        exit();
    }

    for (i = 1; i < argc; i++) {
        if ((fd = open(argv[i], 0)) < 0) {
  30:	83 ec 08             	sub    $0x8,%esp
  33:	6a 00                	push   $0x0
  35:	ff 33                	push   (%ebx)
  37:	e8 ff 03 00 00       	call   43b <open>
  3c:	83 c4 10             	add    $0x10,%esp
  3f:	89 c7                	mov    %eax,%edi
  41:	85 c0                	test   %eax,%eax
  43:	78 26                	js     6b <main+0x6b>
            printf(1, "wc: cannot open %s\n", argv[i]);
            exit();
        }
        wc(fd, argv[i]);
  45:	83 ec 08             	sub    $0x8,%esp
  48:	ff 33                	push   (%ebx)
    for (i = 1; i < argc; i++) {
  4a:	83 c6 01             	add    $0x1,%esi
  4d:	83 c3 04             	add    $0x4,%ebx
        wc(fd, argv[i]);
  50:	50                   	push   %eax
  51:	e8 4a 00 00 00       	call   a0 <wc>
        close(fd);
  56:	89 3c 24             	mov    %edi,(%esp)
  59:	e8 0d 04 00 00       	call   46b <close>
    for (i = 1; i < argc; i++) {
  5e:	83 c4 10             	add    $0x10,%esp
  61:	39 75 e4             	cmp    %esi,-0x1c(%ebp)
  64:	75 ca                	jne    30 <main+0x30>
    }
    exit();
  66:	e8 68 03 00 00       	call   3d3 <exit>
            printf(1, "wc: cannot open %s\n", argv[i]);
  6b:	50                   	push   %eax
  6c:	ff 33                	push   (%ebx)
  6e:	68 9b 08 00 00       	push   $0x89b
  73:	6a 01                	push   $0x1
  75:	e8 d6 04 00 00       	call   550 <printf>
            exit();
  7a:	e8 54 03 00 00       	call   3d3 <exit>
        wc(0, "");
  7f:	52                   	push   %edx
  80:	52                   	push   %edx
  81:	68 8d 08 00 00       	push   $0x88d
  86:	6a 00                	push   $0x0
  88:	e8 13 00 00 00       	call   a0 <wc>
        exit();
  8d:	e8 41 03 00 00       	call   3d3 <exit>
  92:	66 90                	xchg   %ax,%ax
  94:	66 90                	xchg   %ax,%ax
  96:	66 90                	xchg   %ax,%ax
  98:	66 90                	xchg   %ax,%ax
  9a:	66 90                	xchg   %ax,%ax
  9c:	66 90                	xchg   %ax,%ax
  9e:	66 90                	xchg   %ax,%ax

000000a0 <wc>:
void wc(int fd, char *name)  {
  a0:	55                   	push   %ebp
  a1:	89 e5                	mov    %esp,%ebp
  a3:	57                   	push   %edi
  a4:	56                   	push   %esi
  a5:	53                   	push   %ebx
    l = w = c = 0;
  a6:	31 db                	xor    %ebx,%ebx
void wc(int fd, char *name)  {
  a8:	83 ec 1c             	sub    $0x1c,%esp
    inword = 0;
  ab:	c7 45 e4 00 00 00 00 	movl   $0x0,-0x1c(%ebp)
    l = w = c = 0;
  b2:	c7 45 dc 00 00 00 00 	movl   $0x0,-0x24(%ebp)
  b9:	c7 45 e0 00 00 00 00 	movl   $0x0,-0x20(%ebp)
    while ((n = read(fd, buf, sizeof(buf))) > 0) {
  c0:	83 ec 04             	sub    $0x4,%esp
  c3:	68 00 02 00 00       	push   $0x200
  c8:	68 00 0c 00 00       	push   $0xc00
  cd:	ff 75 08             	push   0x8(%ebp)
  d0:	e8 16 03 00 00       	call   3eb <read>
  d5:	83 c4 10             	add    $0x10,%esp
  d8:	89 c6                	mov    %eax,%esi
  da:	85 c0                	test   %eax,%eax
  dc:	7e 62                	jle    140 <wc+0xa0>
        for (i = 0; i < n; i++) {
  de:	31 ff                	xor    %edi,%edi
  e0:	eb 14                	jmp    f6 <wc+0x56>
  e2:	8d b6 00 00 00 00    	lea    0x0(%esi),%esi
                inword = 0;
  e8:	c7 45 e4 00 00 00 00 	movl   $0x0,-0x1c(%ebp)
        for (i = 0; i < n; i++) {
  ef:	83 c7 01             	add    $0x1,%edi
  f2:	39 fe                	cmp    %edi,%esi
  f4:	74 42                	je     138 <wc+0x98>
            if (buf[i] == '\n') {
  f6:	0f be 87 00 0c 00 00 	movsbl 0xc00(%edi),%eax
                l++;
  fd:	31 c9                	xor    %ecx,%ecx
  ff:	3c 0a                	cmp    $0xa,%al
 101:	0f 94 c1             	sete   %cl
            if (strchr(" \r\t\n\v", buf[i])) {
 104:	83 ec 08             	sub    $0x8,%esp
 107:	50                   	push   %eax
                l++;
 108:	01 cb                	add    %ecx,%ebx
            if (strchr(" \r\t\n\v", buf[i])) {
 10a:	68 78 08 00 00       	push   $0x878
 10f:	e8 4c 01 00 00       	call   260 <strchr>
 114:	83 c4 10             	add    $0x10,%esp
 117:	85 c0                	test   %eax,%eax
 119:	75 cd                	jne    e8 <wc+0x48>
            else if (!inword) {
 11b:	8b 55 e4             	mov    -0x1c(%ebp),%edx
 11e:	85 d2                	test   %edx,%edx
 120:	75 cd                	jne    ef <wc+0x4f>
        for (i = 0; i < n; i++) {
 122:	83 c7 01             	add    $0x1,%edi
                w++;
 125:	83 45 e0 01          	addl   $0x1,-0x20(%ebp)
                inword = 1;
 129:	c7 45 e4 01 00 00 00 	movl   $0x1,-0x1c(%ebp)
        for (i = 0; i < n; i++) {
 130:	39 fe                	cmp    %edi,%esi
 132:	75 c2                	jne    f6 <wc+0x56>
 134:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
            c++;
 138:	01 75 dc             	add    %esi,-0x24(%ebp)
 13b:	eb 83                	jmp    c0 <wc+0x20>
 13d:	8d 76 00             	lea    0x0(%esi),%esi
    if (n < 0) {
 140:	75 24                	jne    166 <wc+0xc6>
    printf(1, "%d %d %d %s\n", l, w, c, name);
 142:	83 ec 08             	sub    $0x8,%esp
 145:	ff 75 0c             	push   0xc(%ebp)
 148:	ff 75 dc             	push   -0x24(%ebp)
 14b:	ff 75 e0             	push   -0x20(%ebp)
 14e:	53                   	push   %ebx
 14f:	68 8e 08 00 00       	push   $0x88e
 154:	6a 01                	push   $0x1
 156:	e8 f5 03 00 00       	call   550 <printf>
}
 15b:	83 c4 20             	add    $0x20,%esp
 15e:	8d 65 f4             	lea    -0xc(%ebp),%esp
 161:	5b                   	pop    %ebx
 162:	5e                   	pop    %esi
 163:	5f                   	pop    %edi
 164:	5d                   	pop    %ebp
 165:	c3                   	ret    
        printf(1, "wc: read error\n");
 166:	50                   	push   %eax
 167:	50                   	push   %eax
 168:	68 7e 08 00 00       	push   $0x87e
 16d:	6a 01                	push   $0x1
 16f:	e8 dc 03 00 00       	call   550 <printf>
        exit();
 174:	e8 5a 02 00 00       	call   3d3 <exit>
 179:	66 90                	xchg   %ax,%ax
 17b:	66 90                	xchg   %ax,%ax
 17d:	66 90                	xchg   %ax,%ax
 17f:	90                   	nop

00000180 <strcpy>:
#include "stat.h"
#include "fcntl.h"
#include "user.h"
#include "x86.h"

char*strcpy(char *s, const char *t) {
 180:	55                   	push   %ebp
    char *os;

    os = s;
    while ((*s++ = *t++) != 0) {
 181:	31 c0                	xor    %eax,%eax
char*strcpy(char *s, const char *t) {
 183:	89 e5                	mov    %esp,%ebp
 185:	53                   	push   %ebx
 186:	8b 4d 08             	mov    0x8(%ebp),%ecx
 189:	8b 5d 0c             	mov    0xc(%ebp),%ebx
 18c:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
    while ((*s++ = *t++) != 0) {
 190:	0f b6 14 03          	movzbl (%ebx,%eax,1),%edx
 194:	88 14 01             	mov    %dl,(%ecx,%eax,1)
 197:	83 c0 01             	add    $0x1,%eax
 19a:	84 d2                	test   %dl,%dl
 19c:	75 f2                	jne    190 <strcpy+0x10>
        ;
    }
    return os;
}
 19e:	8b 5d fc             	mov    -0x4(%ebp),%ebx
 1a1:	89 c8                	mov    %ecx,%eax
 1a3:	c9                   	leave  
 1a4:	c3                   	ret    
 1a5:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 1ac:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi

000001b0 <strcmp>:

int strcmp(const char *p, const char *q) {
 1b0:	55                   	push   %ebp
 1b1:	89 e5                	mov    %esp,%ebp
 1b3:	53                   	push   %ebx
 1b4:	8b 55 08             	mov    0x8(%ebp),%edx
 1b7:	8b 4d 0c             	mov    0xc(%ebp),%ecx
    while (*p && *p == *q) {
 1ba:	0f b6 02             	movzbl (%edx),%eax
 1bd:	84 c0                	test   %al,%al
 1bf:	75 17                	jne    1d8 <strcmp+0x28>
 1c1:	eb 3a                	jmp    1fd <strcmp+0x4d>
 1c3:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
 1c7:	90                   	nop
 1c8:	0f b6 42 01          	movzbl 0x1(%edx),%eax
        p++, q++;
 1cc:	83 c2 01             	add    $0x1,%edx
 1cf:	8d 59 01             	lea    0x1(%ecx),%ebx
    while (*p && *p == *q) {
 1d2:	84 c0                	test   %al,%al
 1d4:	74 1a                	je     1f0 <strcmp+0x40>
        p++, q++;
 1d6:	89 d9                	mov    %ebx,%ecx
    while (*p && *p == *q) {
 1d8:	0f b6 19             	movzbl (%ecx),%ebx
 1db:	38 c3                	cmp    %al,%bl
 1dd:	74 e9                	je     1c8 <strcmp+0x18>
    }
    return (uchar) * p - (uchar) * q;
 1df:	29 d8                	sub    %ebx,%eax
}
 1e1:	8b 5d fc             	mov    -0x4(%ebp),%ebx
 1e4:	c9                   	leave  
 1e5:	c3                   	ret    
 1e6:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 1ed:	8d 76 00             	lea    0x0(%esi),%esi
    return (uchar) * p - (uchar) * q;
 1f0:	0f b6 59 01          	movzbl 0x1(%ecx),%ebx
 1f4:	31 c0                	xor    %eax,%eax
 1f6:	29 d8                	sub    %ebx,%eax
}
 1f8:	8b 5d fc             	mov    -0x4(%ebp),%ebx
 1fb:	c9                   	leave  
 1fc:	c3                   	ret    
    return (uchar) * p - (uchar) * q;
 1fd:	0f b6 19             	movzbl (%ecx),%ebx
 200:	31 c0                	xor    %eax,%eax
 202:	eb db                	jmp    1df <strcmp+0x2f>
 204:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 20b:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
 20f:	90                   	nop

00000210 <strlen>:

uint strlen(const char *s)      {
 210:	55                   	push   %ebp
 211:	89 e5                	mov    %esp,%ebp
 213:	8b 55 08             	mov    0x8(%ebp),%edx
    int n;

    for (n = 0; s[n]; n++) {
 216:	80 3a 00             	cmpb   $0x0,(%edx)
 219:	74 15                	je     230 <strlen+0x20>
 21b:	31 c0                	xor    %eax,%eax
 21d:	8d 76 00             	lea    0x0(%esi),%esi
 220:	83 c0 01             	add    $0x1,%eax
 223:	80 3c 02 00          	cmpb   $0x0,(%edx,%eax,1)
 227:	89 c1                	mov    %eax,%ecx
 229:	75 f5                	jne    220 <strlen+0x10>
        ;
    }
    return n;
}
 22b:	89 c8                	mov    %ecx,%eax
 22d:	5d                   	pop    %ebp
 22e:	c3                   	ret    
 22f:	90                   	nop
    for (n = 0; s[n]; n++) {
 230:	31 c9                	xor    %ecx,%ecx
}
 232:	5d                   	pop    %ebp
 233:	89 c8                	mov    %ecx,%eax
 235:	c3                   	ret    
 236:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 23d:	8d 76 00             	lea    0x0(%esi),%esi

00000240 <memset>:

void* memset(void *dst, int c, uint n) {
 240:	55                   	push   %ebp
 241:	89 e5                	mov    %esp,%ebp
 243:	57                   	push   %edi
 244:	8b 55 08             	mov    0x8(%ebp),%edx
                  "d" (port), "0" (addr), "1" (cnt) :
                  "cc");
}

static inline void stosb(void *addr, int data, int cnt)  {
    asm volatile ("cld; rep stosb" :
 247:	8b 4d 10             	mov    0x10(%ebp),%ecx
 24a:	8b 45 0c             	mov    0xc(%ebp),%eax
 24d:	89 d7                	mov    %edx,%edi
 24f:	fc                   	cld    
 250:	f3 aa                	rep stos %al,%es:(%edi)
    stosb(dst, c, n);
    return dst;
}
 252:	8b 7d fc             	mov    -0x4(%ebp),%edi
 255:	89 d0                	mov    %edx,%eax
 257:	c9                   	leave  
 258:	c3                   	ret    
 259:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi

00000260 <strchr>:

char* strchr(const char *s, char c) {
 260:	55                   	push   %ebp
 261:	89 e5                	mov    %esp,%ebp
 263:	8b 45 08             	mov    0x8(%ebp),%eax
 266:	0f b6 4d 0c          	movzbl 0xc(%ebp),%ecx
    for (; *s; s++) {
 26a:	0f b6 10             	movzbl (%eax),%edx
 26d:	84 d2                	test   %dl,%dl
 26f:	75 12                	jne    283 <strchr+0x23>
 271:	eb 1d                	jmp    290 <strchr+0x30>
 273:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
 277:	90                   	nop
 278:	0f b6 50 01          	movzbl 0x1(%eax),%edx
 27c:	83 c0 01             	add    $0x1,%eax
 27f:	84 d2                	test   %dl,%dl
 281:	74 0d                	je     290 <strchr+0x30>
        if (*s == c) {
 283:	38 d1                	cmp    %dl,%cl
 285:	75 f1                	jne    278 <strchr+0x18>
            return (char*)s;
        }
    }
    return 0;
}
 287:	5d                   	pop    %ebp
 288:	c3                   	ret    
 289:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
    return 0;
 290:	31 c0                	xor    %eax,%eax
}
 292:	5d                   	pop    %ebp
 293:	c3                   	ret    
 294:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 29b:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
 29f:	90                   	nop

000002a0 <gets>:

char* gets(char *buf, int max) {
 2a0:	55                   	push   %ebp
 2a1:	89 e5                	mov    %esp,%ebp
 2a3:	57                   	push   %edi
 2a4:	56                   	push   %esi
    int i, cc;
    char c;

    for (i = 0; i + 1 < max;) {
        cc = read(0, &c, 1);
 2a5:	8d 7d e7             	lea    -0x19(%ebp),%edi
char* gets(char *buf, int max) {
 2a8:	53                   	push   %ebx
    for (i = 0; i + 1 < max;) {
 2a9:	31 db                	xor    %ebx,%ebx
char* gets(char *buf, int max) {
 2ab:	83 ec 1c             	sub    $0x1c,%esp
    for (i = 0; i + 1 < max;) {
 2ae:	eb 27                	jmp    2d7 <gets+0x37>
        cc = read(0, &c, 1);
 2b0:	83 ec 04             	sub    $0x4,%esp
 2b3:	6a 01                	push   $0x1
 2b5:	57                   	push   %edi
 2b6:	6a 00                	push   $0x0
 2b8:	e8 2e 01 00 00       	call   3eb <read>
        if (cc < 1) {
 2bd:	83 c4 10             	add    $0x10,%esp
 2c0:	85 c0                	test   %eax,%eax
 2c2:	7e 1d                	jle    2e1 <gets+0x41>
            break;
        }
        buf[i++] = c;
 2c4:	0f b6 45 e7          	movzbl -0x19(%ebp),%eax
 2c8:	8b 55 08             	mov    0x8(%ebp),%edx
 2cb:	88 44 1a ff          	mov    %al,-0x1(%edx,%ebx,1)
        if (c == '\n' || c == '\r') {
 2cf:	3c 0a                	cmp    $0xa,%al
 2d1:	74 1d                	je     2f0 <gets+0x50>
 2d3:	3c 0d                	cmp    $0xd,%al
 2d5:	74 19                	je     2f0 <gets+0x50>
    for (i = 0; i + 1 < max;) {
 2d7:	89 de                	mov    %ebx,%esi
 2d9:	83 c3 01             	add    $0x1,%ebx
 2dc:	3b 5d 0c             	cmp    0xc(%ebp),%ebx
 2df:	7c cf                	jl     2b0 <gets+0x10>
            break;
        }
    }
    buf[i] = '\0';
 2e1:	8b 45 08             	mov    0x8(%ebp),%eax
 2e4:	c6 04 30 00          	movb   $0x0,(%eax,%esi,1)
    return buf;
}
 2e8:	8d 65 f4             	lea    -0xc(%ebp),%esp
 2eb:	5b                   	pop    %ebx
 2ec:	5e                   	pop    %esi
 2ed:	5f                   	pop    %edi
 2ee:	5d                   	pop    %ebp
 2ef:	c3                   	ret    
    buf[i] = '\0';
 2f0:	8b 45 08             	mov    0x8(%ebp),%eax
 2f3:	89 de                	mov    %ebx,%esi
 2f5:	c6 04 30 00          	movb   $0x0,(%eax,%esi,1)
}
 2f9:	8d 65 f4             	lea    -0xc(%ebp),%esp
 2fc:	5b                   	pop    %ebx
 2fd:	5e                   	pop    %esi
 2fe:	5f                   	pop    %edi
 2ff:	5d                   	pop    %ebp
 300:	c3                   	ret    
 301:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 308:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 30f:	90                   	nop

00000310 <stat>:

int stat(const char *n, struct stat *st) {
 310:	55                   	push   %ebp
 311:	89 e5                	mov    %esp,%ebp
 313:	56                   	push   %esi
 314:	53                   	push   %ebx
    int fd;
    int r;

    fd = open(n, O_RDONLY);
 315:	83 ec 08             	sub    $0x8,%esp
 318:	6a 00                	push   $0x0
 31a:	ff 75 08             	push   0x8(%ebp)
 31d:	e8 19 01 00 00       	call   43b <open>
    if (fd < 0) {
 322:	83 c4 10             	add    $0x10,%esp
 325:	85 c0                	test   %eax,%eax
 327:	78 27                	js     350 <stat+0x40>
        return -1;
    }
    r = fstat(fd, st);
 329:	83 ec 08             	sub    $0x8,%esp
 32c:	ff 75 0c             	push   0xc(%ebp)
 32f:	89 c3                	mov    %eax,%ebx
 331:	50                   	push   %eax
 332:	e8 cc 00 00 00       	call   403 <fstat>
    close(fd);
 337:	89 1c 24             	mov    %ebx,(%esp)
    r = fstat(fd, st);
 33a:	89 c6                	mov    %eax,%esi
    close(fd);
 33c:	e8 2a 01 00 00       	call   46b <close>
    return r;
 341:	83 c4 10             	add    $0x10,%esp
}
 344:	8d 65 f8             	lea    -0x8(%ebp),%esp
 347:	89 f0                	mov    %esi,%eax
 349:	5b                   	pop    %ebx
 34a:	5e                   	pop    %esi
 34b:	5d                   	pop    %ebp
 34c:	c3                   	ret    
 34d:	8d 76 00             	lea    0x0(%esi),%esi
        return -1;
 350:	be ff ff ff ff       	mov    $0xffffffff,%esi
 355:	eb ed                	jmp    344 <stat+0x34>
 357:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 35e:	66 90                	xchg   %ax,%ax

00000360 <atoi>:

int atoi(const char *s) {
 360:	55                   	push   %ebp
 361:	89 e5                	mov    %esp,%ebp
 363:	53                   	push   %ebx
 364:	8b 55 08             	mov    0x8(%ebp),%edx
    int n;

    n = 0;
    while ('0' <= *s && *s <= '9') {
 367:	0f be 02             	movsbl (%edx),%eax
 36a:	8d 48 d0             	lea    -0x30(%eax),%ecx
 36d:	80 f9 09             	cmp    $0x9,%cl
    n = 0;
 370:	b9 00 00 00 00       	mov    $0x0,%ecx
    while ('0' <= *s && *s <= '9') {
 375:	77 1e                	ja     395 <atoi+0x35>
 377:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 37e:	66 90                	xchg   %ax,%ax
        n = n * 10 + *s++ - '0';
 380:	83 c2 01             	add    $0x1,%edx
 383:	8d 0c 89             	lea    (%ecx,%ecx,4),%ecx
 386:	8d 4c 48 d0          	lea    -0x30(%eax,%ecx,2),%ecx
    while ('0' <= *s && *s <= '9') {
 38a:	0f be 02             	movsbl (%edx),%eax
 38d:	8d 58 d0             	lea    -0x30(%eax),%ebx
 390:	80 fb 09             	cmp    $0x9,%bl
 393:	76 eb                	jbe    380 <atoi+0x20>
    }
    return n;
}
 395:	8b 5d fc             	mov    -0x4(%ebp),%ebx
 398:	89 c8                	mov    %ecx,%eax
 39a:	c9                   	leave  
 39b:	c3                   	ret    
 39c:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi

000003a0 <memmove>:

void* memmove(void *vdst, const void *vsrc, int n) {
 3a0:	55                   	push   %ebp
 3a1:	89 e5                	mov    %esp,%ebp
 3a3:	57                   	push   %edi
 3a4:	8b 45 10             	mov    0x10(%ebp),%eax
 3a7:	8b 55 08             	mov    0x8(%ebp),%edx
 3aa:	56                   	push   %esi
 3ab:	8b 75 0c             	mov    0xc(%ebp),%esi
    char *dst;
    const char *src;

    dst = vdst;
    src = vsrc;
    while (n-- > 0) {
 3ae:	85 c0                	test   %eax,%eax
 3b0:	7e 13                	jle    3c5 <memmove+0x25>
 3b2:	01 d0                	add    %edx,%eax
    dst = vdst;
 3b4:	89 d7                	mov    %edx,%edi
 3b6:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 3bd:	8d 76 00             	lea    0x0(%esi),%esi
        *dst++ = *src++;
 3c0:	a4                   	movsb  %ds:(%esi),%es:(%edi)
    while (n-- > 0) {
 3c1:	39 f8                	cmp    %edi,%eax
 3c3:	75 fb                	jne    3c0 <memmove+0x20>
    }
    return vdst;
}
 3c5:	5e                   	pop    %esi
 3c6:	89 d0                	mov    %edx,%eax
 3c8:	5f                   	pop    %edi
 3c9:	5d                   	pop    %ebp
 3ca:	c3                   	ret    

000003cb <fork>:
name: \
	movl	$SYS_ ## name, %eax; \
	int	$T_SYSCALL; \
	ret

SYSCALL(fork)
 3cb:	b8 01 00 00 00       	mov    $0x1,%eax
 3d0:	cd 40                	int    $0x40
 3d2:	c3                   	ret    

000003d3 <exit>:
SYSCALL(exit)
 3d3:	b8 02 00 00 00       	mov    $0x2,%eax
 3d8:	cd 40                	int    $0x40
 3da:	c3                   	ret    

000003db <wait>:
SYSCALL(wait)
 3db:	b8 03 00 00 00       	mov    $0x3,%eax
 3e0:	cd 40                	int    $0x40
 3e2:	c3                   	ret    

000003e3 <pipe>:
SYSCALL(pipe)
 3e3:	b8 04 00 00 00       	mov    $0x4,%eax
 3e8:	cd 40                	int    $0x40
 3ea:	c3                   	ret    

000003eb <read>:
SYSCALL(read)
 3eb:	b8 05 00 00 00       	mov    $0x5,%eax
 3f0:	cd 40                	int    $0x40
 3f2:	c3                   	ret    

000003f3 <kill>:
SYSCALL(kill)
 3f3:	b8 06 00 00 00       	mov    $0x6,%eax
 3f8:	cd 40                	int    $0x40
 3fa:	c3                   	ret    

000003fb <exec>:
SYSCALL(exec)
 3fb:	b8 07 00 00 00       	mov    $0x7,%eax
 400:	cd 40                	int    $0x40
 402:	c3                   	ret    

00000403 <fstat>:
SYSCALL(fstat)
 403:	b8 08 00 00 00       	mov    $0x8,%eax
 408:	cd 40                	int    $0x40
 40a:	c3                   	ret    

0000040b <chdir>:
SYSCALL(chdir)
 40b:	b8 09 00 00 00       	mov    $0x9,%eax
 410:	cd 40                	int    $0x40
 412:	c3                   	ret    

00000413 <dup>:
SYSCALL(dup)
 413:	b8 0a 00 00 00       	mov    $0xa,%eax
 418:	cd 40                	int    $0x40
 41a:	c3                   	ret    

0000041b <getpid>:
SYSCALL(getpid)
 41b:	b8 0b 00 00 00       	mov    $0xb,%eax
 420:	cd 40                	int    $0x40
 422:	c3                   	ret    

00000423 <sbrk>:
SYSCALL(sbrk)
 423:	b8 0c 00 00 00       	mov    $0xc,%eax
 428:	cd 40                	int    $0x40
 42a:	c3                   	ret    

0000042b <sleep>:
SYSCALL(sleep)
 42b:	b8 0d 00 00 00       	mov    $0xd,%eax
 430:	cd 40                	int    $0x40
 432:	c3                   	ret    

00000433 <uptime>:
SYSCALL(uptime)
 433:	b8 0e 00 00 00       	mov    $0xe,%eax
 438:	cd 40                	int    $0x40
 43a:	c3                   	ret    

0000043b <open>:
SYSCALL(open)
 43b:	b8 0f 00 00 00       	mov    $0xf,%eax
 440:	cd 40                	int    $0x40
 442:	c3                   	ret    

00000443 <write>:
SYSCALL(write)
 443:	b8 10 00 00 00       	mov    $0x10,%eax
 448:	cd 40                	int    $0x40
 44a:	c3                   	ret    

0000044b <mknod>:
SYSCALL(mknod)
 44b:	b8 11 00 00 00       	mov    $0x11,%eax
 450:	cd 40                	int    $0x40
 452:	c3                   	ret    

00000453 <unlink>:
SYSCALL(unlink)
 453:	b8 12 00 00 00       	mov    $0x12,%eax
 458:	cd 40                	int    $0x40
 45a:	c3                   	ret    

0000045b <link>:
SYSCALL(link)
 45b:	b8 13 00 00 00       	mov    $0x13,%eax
 460:	cd 40                	int    $0x40
 462:	c3                   	ret    

00000463 <mkdir>:
SYSCALL(mkdir)
 463:	b8 14 00 00 00       	mov    $0x14,%eax
 468:	cd 40                	int    $0x40
 46a:	c3                   	ret    

0000046b <close>:
SYSCALL(close)
 46b:	b8 15 00 00 00       	mov    $0x15,%eax
 470:	cd 40                	int    $0x40
 472:	c3                   	ret    

00000473 <getch>:
SYSCALL(getch)
 473:	b8 16 00 00 00       	mov    $0x16,%eax
 478:	cd 40                	int    $0x40
 47a:	c3                   	ret    

0000047b <greeting>:
SYSCALL(greeting)
 47b:	b8 17 00 00 00       	mov    $0x17,%eax
 480:	cd 40                	int    $0x40
 482:	c3                   	ret    

00000483 <shutdown>:
SYSCALL(shutdown)
 483:	b8 18 00 00 00       	mov    $0x18,%eax
 488:	cd 40                	int    $0x40
 48a:	c3                   	ret    

0000048b <screen>:
SYSCALL(screen)
 48b:	b8 19 00 00 00       	mov    $0x19,%eax
 490:	cd 40                	int    $0x40
 492:	c3                   	ret    

00000493 <cls>:
SYSCALL(cls)
 493:	b8 1a 00 00 00       	mov    $0x1a,%eax
 498:	cd 40                	int    $0x40
 49a:	c3                   	ret    
 49b:	66 90                	xchg   %ax,%ax
 49d:	66 90                	xchg   %ax,%ax
 49f:	90                   	nop

000004a0 <printint>:

static void putc(int fd, char c) {
    write(fd, &c, 1);
}

static void printint(int fd, int xx, int base, int sgn) {
 4a0:	55                   	push   %ebp
 4a1:	89 e5                	mov    %esp,%ebp
 4a3:	57                   	push   %edi
 4a4:	56                   	push   %esi
 4a5:	53                   	push   %ebx
 4a6:	83 ec 3c             	sub    $0x3c,%esp
 4a9:	89 4d c4             	mov    %ecx,-0x3c(%ebp)
    uint x;

    neg = 0;
    if (sgn && xx < 0) {
        neg = 1;
        x = -xx;
 4ac:	89 d1                	mov    %edx,%ecx
static void printint(int fd, int xx, int base, int sgn) {
 4ae:	89 45 b8             	mov    %eax,-0x48(%ebp)
    if (sgn && xx < 0) {
 4b1:	85 d2                	test   %edx,%edx
 4b3:	0f 89 7f 00 00 00    	jns    538 <printint+0x98>
 4b9:	f6 45 08 01          	testb  $0x1,0x8(%ebp)
 4bd:	74 79                	je     538 <printint+0x98>
        neg = 1;
 4bf:	c7 45 bc 01 00 00 00 	movl   $0x1,-0x44(%ebp)
        x = -xx;
 4c6:	f7 d9                	neg    %ecx
    }
    else {
        x = xx;
    }

    i = 0;
 4c8:	31 db                	xor    %ebx,%ebx
 4ca:	8d 75 d7             	lea    -0x29(%ebp),%esi
 4cd:	8d 76 00             	lea    0x0(%esi),%esi
    do {
        buf[i++] = digits[x % base];
 4d0:	89 c8                	mov    %ecx,%eax
 4d2:	31 d2                	xor    %edx,%edx
 4d4:	89 cf                	mov    %ecx,%edi
 4d6:	f7 75 c4             	divl   -0x3c(%ebp)
 4d9:	0f b6 92 10 09 00 00 	movzbl 0x910(%edx),%edx
 4e0:	89 45 c0             	mov    %eax,-0x40(%ebp)
 4e3:	89 d8                	mov    %ebx,%eax
 4e5:	8d 5b 01             	lea    0x1(%ebx),%ebx
    }
    while ((x /= base) != 0);
 4e8:	8b 4d c0             	mov    -0x40(%ebp),%ecx
        buf[i++] = digits[x % base];
 4eb:	88 14 1e             	mov    %dl,(%esi,%ebx,1)
    while ((x /= base) != 0);
 4ee:	39 7d c4             	cmp    %edi,-0x3c(%ebp)
 4f1:	76 dd                	jbe    4d0 <printint+0x30>
    if (neg) {
 4f3:	8b 4d bc             	mov    -0x44(%ebp),%ecx
 4f6:	85 c9                	test   %ecx,%ecx
 4f8:	74 0c                	je     506 <printint+0x66>
        buf[i++] = '-';
 4fa:	c6 44 1d d8 2d       	movb   $0x2d,-0x28(%ebp,%ebx,1)
        buf[i++] = digits[x % base];
 4ff:	89 d8                	mov    %ebx,%eax
        buf[i++] = '-';
 501:	ba 2d 00 00 00       	mov    $0x2d,%edx
    }

    while (--i >= 0) {
 506:	8b 7d b8             	mov    -0x48(%ebp),%edi
 509:	8d 5c 05 d7          	lea    -0x29(%ebp,%eax,1),%ebx
 50d:	eb 07                	jmp    516 <printint+0x76>
 50f:	90                   	nop
        putc(fd, buf[i]);
 510:	0f b6 13             	movzbl (%ebx),%edx
 513:	83 eb 01             	sub    $0x1,%ebx
    write(fd, &c, 1);
 516:	83 ec 04             	sub    $0x4,%esp
 519:	88 55 d7             	mov    %dl,-0x29(%ebp)
 51c:	6a 01                	push   $0x1
 51e:	56                   	push   %esi
 51f:	57                   	push   %edi
 520:	e8 1e ff ff ff       	call   443 <write>
    while (--i >= 0) {
 525:	83 c4 10             	add    $0x10,%esp
 528:	39 de                	cmp    %ebx,%esi
 52a:	75 e4                	jne    510 <printint+0x70>
    }
}
 52c:	8d 65 f4             	lea    -0xc(%ebp),%esp
 52f:	5b                   	pop    %ebx
 530:	5e                   	pop    %esi
 531:	5f                   	pop    %edi
 532:	5d                   	pop    %ebp
 533:	c3                   	ret    
 534:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
    neg = 0;
 538:	c7 45 bc 00 00 00 00 	movl   $0x0,-0x44(%ebp)
 53f:	eb 87                	jmp    4c8 <printint+0x28>
 541:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 548:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 54f:	90                   	nop

00000550 <printf>:

// Print to the given fd. Only understands %d, %x, %p, %s.
void printf(int fd, const char *fmt, ...) {
 550:	55                   	push   %ebp
 551:	89 e5                	mov    %esp,%ebp
 553:	57                   	push   %edi
 554:	56                   	push   %esi
 555:	53                   	push   %ebx
 556:	83 ec 2c             	sub    $0x2c,%esp
    int c, i, state;
    uint *ap;

    state = 0;
    ap = (uint*)(void*)&fmt + 1;
    for (i = 0; fmt[i]; i++) {
 559:	8b 5d 0c             	mov    0xc(%ebp),%ebx
void printf(int fd, const char *fmt, ...) {
 55c:	8b 75 08             	mov    0x8(%ebp),%esi
    for (i = 0; fmt[i]; i++) {
 55f:	0f b6 13             	movzbl (%ebx),%edx
 562:	84 d2                	test   %dl,%dl
 564:	74 6a                	je     5d0 <printf+0x80>
    ap = (uint*)(void*)&fmt + 1;
 566:	8d 45 10             	lea    0x10(%ebp),%eax
 569:	83 c3 01             	add    $0x1,%ebx
    write(fd, &c, 1);
 56c:	8d 7d e7             	lea    -0x19(%ebp),%edi
    state = 0;
 56f:	31 c9                	xor    %ecx,%ecx
    ap = (uint*)(void*)&fmt + 1;
 571:	89 45 d0             	mov    %eax,-0x30(%ebp)
 574:	eb 36                	jmp    5ac <printf+0x5c>
 576:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 57d:	8d 76 00             	lea    0x0(%esi),%esi
 580:	89 4d d4             	mov    %ecx,-0x2c(%ebp)
        c = fmt[i] & 0xff;
        if (state == 0) {
            if (c == '%') {
                state = '%';
 583:	b9 25 00 00 00       	mov    $0x25,%ecx
            if (c == '%') {
 588:	83 f8 25             	cmp    $0x25,%eax
 58b:	74 15                	je     5a2 <printf+0x52>
    write(fd, &c, 1);
 58d:	83 ec 04             	sub    $0x4,%esp
 590:	88 55 e7             	mov    %dl,-0x19(%ebp)
 593:	6a 01                	push   $0x1
 595:	57                   	push   %edi
 596:	56                   	push   %esi
 597:	e8 a7 fe ff ff       	call   443 <write>
 59c:	8b 4d d4             	mov    -0x2c(%ebp),%ecx
            }
            else {
                putc(fd, c);
 59f:	83 c4 10             	add    $0x10,%esp
    for (i = 0; fmt[i]; i++) {
 5a2:	0f b6 13             	movzbl (%ebx),%edx
 5a5:	83 c3 01             	add    $0x1,%ebx
 5a8:	84 d2                	test   %dl,%dl
 5aa:	74 24                	je     5d0 <printf+0x80>
        c = fmt[i] & 0xff;
 5ac:	0f b6 c2             	movzbl %dl,%eax
        if (state == 0) {
 5af:	85 c9                	test   %ecx,%ecx
 5b1:	74 cd                	je     580 <printf+0x30>
            }
        }
        else if (state == '%') {
 5b3:	83 f9 25             	cmp    $0x25,%ecx
 5b6:	75 ea                	jne    5a2 <printf+0x52>
            if (c == 'd') {
 5b8:	83 f8 25             	cmp    $0x25,%eax
 5bb:	0f 84 07 01 00 00    	je     6c8 <printf+0x178>
 5c1:	83 e8 63             	sub    $0x63,%eax
 5c4:	83 f8 15             	cmp    $0x15,%eax
 5c7:	77 17                	ja     5e0 <printf+0x90>
 5c9:	ff 24 85 b8 08 00 00 	jmp    *0x8b8(,%eax,4)
                putc(fd, c);
            }
            state = 0;
        }
    }
}
 5d0:	8d 65 f4             	lea    -0xc(%ebp),%esp
 5d3:	5b                   	pop    %ebx
 5d4:	5e                   	pop    %esi
 5d5:	5f                   	pop    %edi
 5d6:	5d                   	pop    %ebp
 5d7:	c3                   	ret    
 5d8:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 5df:	90                   	nop
    write(fd, &c, 1);
 5e0:	83 ec 04             	sub    $0x4,%esp
 5e3:	88 55 d4             	mov    %dl,-0x2c(%ebp)
 5e6:	6a 01                	push   $0x1
 5e8:	57                   	push   %edi
 5e9:	56                   	push   %esi
 5ea:	c6 45 e7 25          	movb   $0x25,-0x19(%ebp)
 5ee:	e8 50 fe ff ff       	call   443 <write>
                putc(fd, c);
 5f3:	0f b6 55 d4          	movzbl -0x2c(%ebp),%edx
    write(fd, &c, 1);
 5f7:	83 c4 0c             	add    $0xc,%esp
 5fa:	88 55 e7             	mov    %dl,-0x19(%ebp)
 5fd:	6a 01                	push   $0x1
 5ff:	57                   	push   %edi
 600:	56                   	push   %esi
 601:	e8 3d fe ff ff       	call   443 <write>
                putc(fd, c);
 606:	83 c4 10             	add    $0x10,%esp
            state = 0;
 609:	31 c9                	xor    %ecx,%ecx
 60b:	eb 95                	jmp    5a2 <printf+0x52>
 60d:	8d 76 00             	lea    0x0(%esi),%esi
                printint(fd, *ap, 16, 0);
 610:	83 ec 0c             	sub    $0xc,%esp
 613:	b9 10 00 00 00       	mov    $0x10,%ecx
 618:	6a 00                	push   $0x0
 61a:	8b 45 d0             	mov    -0x30(%ebp),%eax
 61d:	8b 10                	mov    (%eax),%edx
 61f:	89 f0                	mov    %esi,%eax
 621:	e8 7a fe ff ff       	call   4a0 <printint>
                ap++;
 626:	83 45 d0 04          	addl   $0x4,-0x30(%ebp)
 62a:	83 c4 10             	add    $0x10,%esp
            state = 0;
 62d:	31 c9                	xor    %ecx,%ecx
 62f:	e9 6e ff ff ff       	jmp    5a2 <printf+0x52>
 634:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
                s = (char*)*ap;
 638:	8b 45 d0             	mov    -0x30(%ebp),%eax
 63b:	8b 10                	mov    (%eax),%edx
                ap++;
 63d:	83 c0 04             	add    $0x4,%eax
 640:	89 45 d0             	mov    %eax,-0x30(%ebp)
                if (s == 0) {
 643:	85 d2                	test   %edx,%edx
 645:	0f 84 8d 00 00 00    	je     6d8 <printf+0x188>
                while (*s != 0) {
 64b:	0f b6 02             	movzbl (%edx),%eax
            state = 0;
 64e:	31 c9                	xor    %ecx,%ecx
                while (*s != 0) {
 650:	84 c0                	test   %al,%al
 652:	0f 84 4a ff ff ff    	je     5a2 <printf+0x52>
 658:	89 5d d4             	mov    %ebx,-0x2c(%ebp)
 65b:	89 d3                	mov    %edx,%ebx
 65d:	8d 76 00             	lea    0x0(%esi),%esi
    write(fd, &c, 1);
 660:	83 ec 04             	sub    $0x4,%esp
                    s++;
 663:	83 c3 01             	add    $0x1,%ebx
 666:	88 45 e7             	mov    %al,-0x19(%ebp)
    write(fd, &c, 1);
 669:	6a 01                	push   $0x1
 66b:	57                   	push   %edi
 66c:	56                   	push   %esi
 66d:	e8 d1 fd ff ff       	call   443 <write>
                while (*s != 0) {
 672:	0f b6 03             	movzbl (%ebx),%eax
 675:	83 c4 10             	add    $0x10,%esp
 678:	84 c0                	test   %al,%al
 67a:	75 e4                	jne    660 <printf+0x110>
            state = 0;
 67c:	8b 5d d4             	mov    -0x2c(%ebp),%ebx
 67f:	31 c9                	xor    %ecx,%ecx
 681:	e9 1c ff ff ff       	jmp    5a2 <printf+0x52>
 686:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 68d:	8d 76 00             	lea    0x0(%esi),%esi
                printint(fd, *ap, 10, 1);
 690:	83 ec 0c             	sub    $0xc,%esp
 693:	b9 0a 00 00 00       	mov    $0xa,%ecx
 698:	6a 01                	push   $0x1
 69a:	e9 7b ff ff ff       	jmp    61a <printf+0xca>
 69f:	90                   	nop
                putc(fd, *ap);
 6a0:	8b 45 d0             	mov    -0x30(%ebp),%eax
    write(fd, &c, 1);
 6a3:	83 ec 04             	sub    $0x4,%esp
                putc(fd, *ap);
 6a6:	8b 00                	mov    (%eax),%eax
    write(fd, &c, 1);
 6a8:	6a 01                	push   $0x1
 6aa:	57                   	push   %edi
 6ab:	56                   	push   %esi
                putc(fd, *ap);
 6ac:	88 45 e7             	mov    %al,-0x19(%ebp)
    write(fd, &c, 1);
 6af:	e8 8f fd ff ff       	call   443 <write>
                ap++;
 6b4:	83 45 d0 04          	addl   $0x4,-0x30(%ebp)
 6b8:	83 c4 10             	add    $0x10,%esp
            state = 0;
 6bb:	31 c9                	xor    %ecx,%ecx
 6bd:	e9 e0 fe ff ff       	jmp    5a2 <printf+0x52>
 6c2:	8d b6 00 00 00 00    	lea    0x0(%esi),%esi
                putc(fd, c);
 6c8:	88 55 e7             	mov    %dl,-0x19(%ebp)
    write(fd, &c, 1);
 6cb:	83 ec 04             	sub    $0x4,%esp
 6ce:	e9 2a ff ff ff       	jmp    5fd <printf+0xad>
 6d3:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
 6d7:	90                   	nop
                    s = "(null)";
 6d8:	ba af 08 00 00       	mov    $0x8af,%edx
                while (*s != 0) {
 6dd:	89 5d d4             	mov    %ebx,-0x2c(%ebp)
 6e0:	b8 28 00 00 00       	mov    $0x28,%eax
 6e5:	89 d3                	mov    %edx,%ebx
 6e7:	e9 74 ff ff ff       	jmp    660 <printf+0x110>
 6ec:	66 90                	xchg   %ax,%ax
 6ee:	66 90                	xchg   %ax,%ax

000006f0 <free>:
typedef union header Header;

static Header base;
static Header *freep;

void free(void *ap) {
 6f0:	55                   	push   %ebp
    Header *bp, *p;

    bp = (Header*)ap - 1;
    for (p = freep; !(bp > p && bp < p->s.ptr); p = p->s.ptr) {
 6f1:	a1 00 0e 00 00       	mov    0xe00,%eax
void free(void *ap) {
 6f6:	89 e5                	mov    %esp,%ebp
 6f8:	57                   	push   %edi
 6f9:	56                   	push   %esi
 6fa:	53                   	push   %ebx
 6fb:	8b 5d 08             	mov    0x8(%ebp),%ebx
    bp = (Header*)ap - 1;
 6fe:	8d 4b f8             	lea    -0x8(%ebx),%ecx
    for (p = freep; !(bp > p && bp < p->s.ptr); p = p->s.ptr) {
 701:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 708:	89 c2                	mov    %eax,%edx
 70a:	8b 00                	mov    (%eax),%eax
 70c:	39 ca                	cmp    %ecx,%edx
 70e:	73 30                	jae    740 <free+0x50>
 710:	39 c1                	cmp    %eax,%ecx
 712:	72 04                	jb     718 <free+0x28>
        if (p >= p->s.ptr && (bp > p || bp < p->s.ptr)) {
 714:	39 c2                	cmp    %eax,%edx
 716:	72 f0                	jb     708 <free+0x18>
            break;
        }
    }
    if (bp + bp->s.size == p->s.ptr) {
 718:	8b 73 fc             	mov    -0x4(%ebx),%esi
 71b:	8d 3c f1             	lea    (%ecx,%esi,8),%edi
 71e:	39 f8                	cmp    %edi,%eax
 720:	74 30                	je     752 <free+0x62>
        bp->s.size += p->s.ptr->s.size;
        bp->s.ptr = p->s.ptr->s.ptr;
 722:	89 43 f8             	mov    %eax,-0x8(%ebx)
    }
    else {
        bp->s.ptr = p->s.ptr;
    }
    if (p + p->s.size == bp) {
 725:	8b 42 04             	mov    0x4(%edx),%eax
 728:	8d 34 c2             	lea    (%edx,%eax,8),%esi
 72b:	39 f1                	cmp    %esi,%ecx
 72d:	74 3a                	je     769 <free+0x79>
        p->s.size += bp->s.size;
        p->s.ptr = bp->s.ptr;
 72f:	89 0a                	mov    %ecx,(%edx)
    }
    else {
        p->s.ptr = bp;
    }
    freep = p;
}
 731:	5b                   	pop    %ebx
    freep = p;
 732:	89 15 00 0e 00 00    	mov    %edx,0xe00
}
 738:	5e                   	pop    %esi
 739:	5f                   	pop    %edi
 73a:	5d                   	pop    %ebp
 73b:	c3                   	ret    
 73c:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
        if (p >= p->s.ptr && (bp > p || bp < p->s.ptr)) {
 740:	39 c2                	cmp    %eax,%edx
 742:	72 c4                	jb     708 <free+0x18>
 744:	39 c1                	cmp    %eax,%ecx
 746:	73 c0                	jae    708 <free+0x18>
    if (bp + bp->s.size == p->s.ptr) {
 748:	8b 73 fc             	mov    -0x4(%ebx),%esi
 74b:	8d 3c f1             	lea    (%ecx,%esi,8),%edi
 74e:	39 f8                	cmp    %edi,%eax
 750:	75 d0                	jne    722 <free+0x32>
        bp->s.size += p->s.ptr->s.size;
 752:	03 70 04             	add    0x4(%eax),%esi
 755:	89 73 fc             	mov    %esi,-0x4(%ebx)
        bp->s.ptr = p->s.ptr->s.ptr;
 758:	8b 02                	mov    (%edx),%eax
 75a:	8b 00                	mov    (%eax),%eax
 75c:	89 43 f8             	mov    %eax,-0x8(%ebx)
    if (p + p->s.size == bp) {
 75f:	8b 42 04             	mov    0x4(%edx),%eax
 762:	8d 34 c2             	lea    (%edx,%eax,8),%esi
 765:	39 f1                	cmp    %esi,%ecx
 767:	75 c6                	jne    72f <free+0x3f>
        p->s.size += bp->s.size;
 769:	03 43 fc             	add    -0x4(%ebx),%eax
    freep = p;
 76c:	89 15 00 0e 00 00    	mov    %edx,0xe00
        p->s.size += bp->s.size;
 772:	89 42 04             	mov    %eax,0x4(%edx)
        p->s.ptr = bp->s.ptr;
 775:	8b 4b f8             	mov    -0x8(%ebx),%ecx
 778:	89 0a                	mov    %ecx,(%edx)
}
 77a:	5b                   	pop    %ebx
 77b:	5e                   	pop    %esi
 77c:	5f                   	pop    %edi
 77d:	5d                   	pop    %ebp
 77e:	c3                   	ret    
 77f:	90                   	nop

00000780 <malloc>:
    hp->s.size = nu;
    free((void*)(hp + 1));
    return freep;
}

void* malloc(uint nbytes) {
 780:	55                   	push   %ebp
 781:	89 e5                	mov    %esp,%ebp
 783:	57                   	push   %edi
 784:	56                   	push   %esi
 785:	53                   	push   %ebx
 786:	83 ec 1c             	sub    $0x1c,%esp
    Header *p, *prevp;
    uint nunits;

    nunits = (nbytes + sizeof(Header) - 1) / sizeof(Header) + 1;
 789:	8b 45 08             	mov    0x8(%ebp),%eax
    if ((prevp = freep) == 0) {
 78c:	8b 3d 00 0e 00 00    	mov    0xe00,%edi
    nunits = (nbytes + sizeof(Header) - 1) / sizeof(Header) + 1;
 792:	8d 70 07             	lea    0x7(%eax),%esi
 795:	c1 ee 03             	shr    $0x3,%esi
 798:	83 c6 01             	add    $0x1,%esi
    if ((prevp = freep) == 0) {
 79b:	85 ff                	test   %edi,%edi
 79d:	0f 84 9d 00 00 00    	je     840 <malloc+0xc0>
        base.s.ptr = freep = prevp = &base;
        base.s.size = 0;
    }
    for (p = prevp->s.ptr;; prevp = p, p = p->s.ptr) {
 7a3:	8b 17                	mov    (%edi),%edx
        if (p->s.size >= nunits) {
 7a5:	8b 4a 04             	mov    0x4(%edx),%ecx
 7a8:	39 f1                	cmp    %esi,%ecx
 7aa:	73 6a                	jae    816 <malloc+0x96>
 7ac:	bb 00 10 00 00       	mov    $0x1000,%ebx
 7b1:	39 de                	cmp    %ebx,%esi
 7b3:	0f 43 de             	cmovae %esi,%ebx
    p = sbrk(nu * sizeof(Header));
 7b6:	8d 04 dd 00 00 00 00 	lea    0x0(,%ebx,8),%eax
 7bd:	89 45 e4             	mov    %eax,-0x1c(%ebp)
 7c0:	eb 17                	jmp    7d9 <malloc+0x59>
 7c2:	8d b6 00 00 00 00    	lea    0x0(%esi),%esi
    for (p = prevp->s.ptr;; prevp = p, p = p->s.ptr) {
 7c8:	8b 02                	mov    (%edx),%eax
        if (p->s.size >= nunits) {
 7ca:	8b 48 04             	mov    0x4(%eax),%ecx
 7cd:	39 f1                	cmp    %esi,%ecx
 7cf:	73 4f                	jae    820 <malloc+0xa0>
                p->s.size = nunits;
            }
            freep = prevp;
            return (void*)(p + 1);
        }
        if (p == freep) {
 7d1:	8b 3d 00 0e 00 00    	mov    0xe00,%edi
 7d7:	89 c2                	mov    %eax,%edx
 7d9:	39 d7                	cmp    %edx,%edi
 7db:	75 eb                	jne    7c8 <malloc+0x48>
    p = sbrk(nu * sizeof(Header));
 7dd:	83 ec 0c             	sub    $0xc,%esp
 7e0:	ff 75 e4             	push   -0x1c(%ebp)
 7e3:	e8 3b fc ff ff       	call   423 <sbrk>
    if (p == (char*)-1) {
 7e8:	83 c4 10             	add    $0x10,%esp
 7eb:	83 f8 ff             	cmp    $0xffffffff,%eax
 7ee:	74 1c                	je     80c <malloc+0x8c>
    hp->s.size = nu;
 7f0:	89 58 04             	mov    %ebx,0x4(%eax)
    free((void*)(hp + 1));
 7f3:	83 ec 0c             	sub    $0xc,%esp
 7f6:	83 c0 08             	add    $0x8,%eax
 7f9:	50                   	push   %eax
 7fa:	e8 f1 fe ff ff       	call   6f0 <free>
    return freep;
 7ff:	8b 15 00 0e 00 00    	mov    0xe00,%edx
            if ((p = morecore(nunits)) == 0) {
 805:	83 c4 10             	add    $0x10,%esp
 808:	85 d2                	test   %edx,%edx
 80a:	75 bc                	jne    7c8 <malloc+0x48>
                return 0;
            }
        }
    }
}
 80c:	8d 65 f4             	lea    -0xc(%ebp),%esp
                return 0;
 80f:	31 c0                	xor    %eax,%eax
}
 811:	5b                   	pop    %ebx
 812:	5e                   	pop    %esi
 813:	5f                   	pop    %edi
 814:	5d                   	pop    %ebp
 815:	c3                   	ret    
        if (p->s.size >= nunits) {
 816:	89 d0                	mov    %edx,%eax
 818:	89 fa                	mov    %edi,%edx
 81a:	8d b6 00 00 00 00    	lea    0x0(%esi),%esi
            if (p->s.size == nunits) {
 820:	39 ce                	cmp    %ecx,%esi
 822:	74 4c                	je     870 <malloc+0xf0>
                p->s.size -= nunits;
 824:	29 f1                	sub    %esi,%ecx
 826:	89 48 04             	mov    %ecx,0x4(%eax)
                p += p->s.size;
 829:	8d 04 c8             	lea    (%eax,%ecx,8),%eax
                p->s.size = nunits;
 82c:	89 70 04             	mov    %esi,0x4(%eax)
            freep = prevp;
 82f:	89 15 00 0e 00 00    	mov    %edx,0xe00
}
 835:	8d 65 f4             	lea    -0xc(%ebp),%esp
            return (void*)(p + 1);
 838:	83 c0 08             	add    $0x8,%eax
}
 83b:	5b                   	pop    %ebx
 83c:	5e                   	pop    %esi
 83d:	5f                   	pop    %edi
 83e:	5d                   	pop    %ebp
 83f:	c3                   	ret    
        base.s.ptr = freep = prevp = &base;
 840:	c7 05 00 0e 00 00 04 	movl   $0xe04,0xe00
 847:	0e 00 00 
        base.s.size = 0;
 84a:	bf 04 0e 00 00       	mov    $0xe04,%edi
        base.s.ptr = freep = prevp = &base;
 84f:	c7 05 04 0e 00 00 04 	movl   $0xe04,0xe04
 856:	0e 00 00 
    for (p = prevp->s.ptr;; prevp = p, p = p->s.ptr) {
 859:	89 fa                	mov    %edi,%edx
        base.s.size = 0;
 85b:	c7 05 08 0e 00 00 00 	movl   $0x0,0xe08
 862:	00 00 00 
        if (p->s.size >= nunits) {
 865:	e9 42 ff ff ff       	jmp    7ac <malloc+0x2c>
 86a:	8d b6 00 00 00 00    	lea    0x0(%esi),%esi
                prevp->s.ptr = p->s.ptr;
 870:	8b 08                	mov    (%eax),%ecx
 872:	89 0a                	mov    %ecx,(%edx)
 874:	eb b9                	jmp    82f <malloc+0xaf>