_echo:     file format elf32-i386


Disassembly of section .text:

00000000 <main>:
#include "types.h"
#include "stat.h"
#include "user.h"

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:	53                   	push   %ebx
  10:	51                   	push   %ecx
  11:	83 ec 08             	sub    $0x8,%esp
  14:	8b 31                	mov    (%ecx),%esi
  16:	8b 79 04             	mov    0x4(%ecx),%edi
    int i;

    for (i = 1; i < argc; i++) {
  19:	83 fe 01             	cmp    $0x1,%esi
  1c:	7e 47                	jle    65 <main+0x65>
  1e:	bb 01 00 00 00       	mov    $0x1,%ebx
        printf(1, "%s%s", argv[i], i + 1 < argc ? " " : "\n");
  23:	83 c3 01             	add    $0x1,%ebx
  26:	8b 44 9f fc          	mov    -0x4(%edi,%ebx,4),%eax
  2a:	39 f3                	cmp    %esi,%ebx
  2c:	74 22                	je     50 <main+0x50>
  2e:	66 90                	xchg   %ax,%ax
  30:	68 68 07 00 00       	push   $0x768
  35:	83 c3 01             	add    $0x1,%ebx
  38:	50                   	push   %eax
  39:	68 6a 07 00 00       	push   $0x76a
  3e:	6a 01                	push   $0x1
  40:	e8 fb 03 00 00       	call   440 <printf>
  45:	8b 44 9f fc          	mov    -0x4(%edi,%ebx,4),%eax
  49:	83 c4 10             	add    $0x10,%esp
  4c:	39 f3                	cmp    %esi,%ebx
  4e:	75 e0                	jne    30 <main+0x30>
  50:	68 6f 07 00 00       	push   $0x76f
  55:	50                   	push   %eax
  56:	68 6a 07 00 00       	push   $0x76a
  5b:	6a 01                	push   $0x1
  5d:	e8 de 03 00 00       	call   440 <printf>
  62:	83 c4 10             	add    $0x10,%esp
    }
    exit();
  65:	e8 59 02 00 00       	call   2c3 <exit>
  6a:	66 90                	xchg   %ax,%ax
  6c:	66 90                	xchg   %ax,%ax
  6e:	66 90                	xchg   %ax,%ax

00000070 <strcpy>:
#include "stat.h"
#include "fcntl.h"
#include "user.h"
#include "x86.h"

char*strcpy(char *s, const char *t) {
  70:	55                   	push   %ebp
    char *os;

    os = s;
    while ((*s++ = *t++) != 0) {
  71:	31 c0                	xor    %eax,%eax
char*strcpy(char *s, const char *t) {
  73:	89 e5                	mov    %esp,%ebp
  75:	53                   	push   %ebx
  76:	8b 4d 08             	mov    0x8(%ebp),%ecx
  79:	8b 5d 0c             	mov    0xc(%ebp),%ebx
  7c:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
    while ((*s++ = *t++) != 0) {
  80:	0f b6 14 03          	movzbl (%ebx,%eax,1),%edx
  84:	88 14 01             	mov    %dl,(%ecx,%eax,1)
  87:	83 c0 01             	add    $0x1,%eax
  8a:	84 d2                	test   %dl,%dl
  8c:	75 f2                	jne    80 <strcpy+0x10>
        ;
    }
    return os;
}
  8e:	8b 5d fc             	mov    -0x4(%ebp),%ebx
  91:	89 c8                	mov    %ecx,%eax
  93:	c9                   	leave  
  94:	c3                   	ret    
  95:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
  9c:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi

000000a0 <strcmp>:

int strcmp(const char *p, const char *q) {
  a0:	55                   	push   %ebp
  a1:	89 e5                	mov    %esp,%ebp
  a3:	53                   	push   %ebx
  a4:	8b 55 08             	mov    0x8(%ebp),%edx
  a7:	8b 4d 0c             	mov    0xc(%ebp),%ecx
    while (*p && *p == *q) {
  aa:	0f b6 02             	movzbl (%edx),%eax
  ad:	84 c0                	test   %al,%al
  af:	75 17                	jne    c8 <strcmp+0x28>
  b1:	eb 3a                	jmp    ed <strcmp+0x4d>
  b3:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
  b7:	90                   	nop
  b8:	0f b6 42 01          	movzbl 0x1(%edx),%eax
        p++, q++;
  bc:	83 c2 01             	add    $0x1,%edx
  bf:	8d 59 01             	lea    0x1(%ecx),%ebx
    while (*p && *p == *q) {
  c2:	84 c0                	test   %al,%al
  c4:	74 1a                	je     e0 <strcmp+0x40>
        p++, q++;
  c6:	89 d9                	mov    %ebx,%ecx
    while (*p && *p == *q) {
  c8:	0f b6 19             	movzbl (%ecx),%ebx
  cb:	38 c3                	cmp    %al,%bl
  cd:	74 e9                	je     b8 <strcmp+0x18>
    }
    return (uchar) * p - (uchar) * q;
  cf:	29 d8                	sub    %ebx,%eax
}
  d1:	8b 5d fc             	mov    -0x4(%ebp),%ebx
  d4:	c9                   	leave  
  d5:	c3                   	ret    
  d6:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
  dd:	8d 76 00             	lea    0x0(%esi),%esi
    return (uchar) * p - (uchar) * q;
  e0:	0f b6 59 01          	movzbl 0x1(%ecx),%ebx
  e4:	31 c0                	xor    %eax,%eax
  e6:	29 d8                	sub    %ebx,%eax
}
  e8:	8b 5d fc             	mov    -0x4(%ebp),%ebx
  eb:	c9                   	leave  
  ec:	c3                   	ret    
    return (uchar) * p - (uchar) * q;
  ed:	0f b6 19             	movzbl (%ecx),%ebx
  f0:	31 c0                	xor    %eax,%eax
  f2:	eb db                	jmp    cf <strcmp+0x2f>
  f4:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
  fb:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
  ff:	90                   	nop

00000100 <strlen>:

uint strlen(const char *s)      {
 100:	55                   	push   %ebp
 101:	89 e5                	mov    %esp,%ebp
 103:	8b 55 08             	mov    0x8(%ebp),%edx
    int n;

    for (n = 0; s[n]; n++) {
 106:	80 3a 00             	cmpb   $0x0,(%edx)
 109:	74 15                	je     120 <strlen+0x20>
 10b:	31 c0                	xor    %eax,%eax
 10d:	8d 76 00             	lea    0x0(%esi),%esi
 110:	83 c0 01             	add    $0x1,%eax
 113:	80 3c 02 00          	cmpb   $0x0,(%edx,%eax,1)
 117:	89 c1                	mov    %eax,%ecx
 119:	75 f5                	jne    110 <strlen+0x10>
        ;
    }
    return n;
}
 11b:	89 c8                	mov    %ecx,%eax
 11d:	5d                   	pop    %ebp
 11e:	c3                   	ret    
 11f:	90                   	nop
    for (n = 0; s[n]; n++) {
 120:	31 c9                	xor    %ecx,%ecx
}
 122:	5d                   	pop    %ebp
 123:	89 c8                	mov    %ecx,%eax
 125:	c3                   	ret    
 126:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 12d:	8d 76 00             	lea    0x0(%esi),%esi

00000130 <memset>:

void* memset(void *dst, int c, uint n) {
 130:	55                   	push   %ebp
 131:	89 e5                	mov    %esp,%ebp
 133:	57                   	push   %edi
 134:	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" :
 137:	8b 4d 10             	mov    0x10(%ebp),%ecx
 13a:	8b 45 0c             	mov    0xc(%ebp),%eax
 13d:	89 d7                	mov    %edx,%edi
 13f:	fc                   	cld    
 140:	f3 aa                	rep stos %al,%es:(%edi)
    stosb(dst, c, n);
    return dst;
}
 142:	8b 7d fc             	mov    -0x4(%ebp),%edi
 145:	89 d0                	mov    %edx,%eax
 147:	c9                   	leave  
 148:	c3                   	ret    
 149:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi

00000150 <strchr>:

char* strchr(const char *s, char c) {
 150:	55                   	push   %ebp
 151:	89 e5                	mov    %esp,%ebp
 153:	8b 45 08             	mov    0x8(%ebp),%eax
 156:	0f b6 4d 0c          	movzbl 0xc(%ebp),%ecx
    for (; *s; s++) {
 15a:	0f b6 10             	movzbl (%eax),%edx
 15d:	84 d2                	test   %dl,%dl
 15f:	75 12                	jne    173 <strchr+0x23>
 161:	eb 1d                	jmp    180 <strchr+0x30>
 163:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
 167:	90                   	nop
 168:	0f b6 50 01          	movzbl 0x1(%eax),%edx
 16c:	83 c0 01             	add    $0x1,%eax
 16f:	84 d2                	test   %dl,%dl
 171:	74 0d                	je     180 <strchr+0x30>
        if (*s == c) {
 173:	38 d1                	cmp    %dl,%cl
 175:	75 f1                	jne    168 <strchr+0x18>
            return (char*)s;
        }
    }
    return 0;
}
 177:	5d                   	pop    %ebp
 178:	c3                   	ret    
 179:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
    return 0;
 180:	31 c0                	xor    %eax,%eax
}
 182:	5d                   	pop    %ebp
 183:	c3                   	ret    
 184:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 18b:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
 18f:	90                   	nop

00000190 <gets>:

char* gets(char *buf, int max) {
 190:	55                   	push   %ebp
 191:	89 e5                	mov    %esp,%ebp
 193:	57                   	push   %edi
 194:	56                   	push   %esi
    int i, cc;
    char c;

    for (i = 0; i + 1 < max;) {
        cc = read(0, &c, 1);
 195:	8d 7d e7             	lea    -0x19(%ebp),%edi
char* gets(char *buf, int max) {
 198:	53                   	push   %ebx
    for (i = 0; i + 1 < max;) {
 199:	31 db                	xor    %ebx,%ebx
char* gets(char *buf, int max) {
 19b:	83 ec 1c             	sub    $0x1c,%esp
    for (i = 0; i + 1 < max;) {
 19e:	eb 27                	jmp    1c7 <gets+0x37>
        cc = read(0, &c, 1);
 1a0:	83 ec 04             	sub    $0x4,%esp
 1a3:	6a 01                	push   $0x1
 1a5:	57                   	push   %edi
 1a6:	6a 00                	push   $0x0
 1a8:	e8 2e 01 00 00       	call   2db <read>
        if (cc < 1) {
 1ad:	83 c4 10             	add    $0x10,%esp
 1b0:	85 c0                	test   %eax,%eax
 1b2:	7e 1d                	jle    1d1 <gets+0x41>
            break;
        }
        buf[i++] = c;
 1b4:	0f b6 45 e7          	movzbl -0x19(%ebp),%eax
 1b8:	8b 55 08             	mov    0x8(%ebp),%edx
 1bb:	88 44 1a ff          	mov    %al,-0x1(%edx,%ebx,1)
        if (c == '\n' || c == '\r') {
 1bf:	3c 0a                	cmp    $0xa,%al
 1c1:	74 1d                	je     1e0 <gets+0x50>
 1c3:	3c 0d                	cmp    $0xd,%al
 1c5:	74 19                	je     1e0 <gets+0x50>
    for (i = 0; i + 1 < max;) {
 1c7:	89 de                	mov    %ebx,%esi
 1c9:	83 c3 01             	add    $0x1,%ebx
 1cc:	3b 5d 0c             	cmp    0xc(%ebp),%ebx
 1cf:	7c cf                	jl     1a0 <gets+0x10>
            break;
        }
    }
    buf[i] = '\0';
 1d1:	8b 45 08             	mov    0x8(%ebp),%eax
 1d4:	c6 04 30 00          	movb   $0x0,(%eax,%esi,1)
    return buf;
}
 1d8:	8d 65 f4             	lea    -0xc(%ebp),%esp
 1db:	5b                   	pop    %ebx
 1dc:	5e                   	pop    %esi
 1dd:	5f                   	pop    %edi
 1de:	5d                   	pop    %ebp
 1df:	c3                   	ret    
    buf[i] = '\0';
 1e0:	8b 45 08             	mov    0x8(%ebp),%eax
 1e3:	89 de                	mov    %ebx,%esi
 1e5:	c6 04 30 00          	movb   $0x0,(%eax,%esi,1)
}
 1e9:	8d 65 f4             	lea    -0xc(%ebp),%esp
 1ec:	5b                   	pop    %ebx
 1ed:	5e                   	pop    %esi
 1ee:	5f                   	pop    %edi
 1ef:	5d                   	pop    %ebp
 1f0:	c3                   	ret    
 1f1:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 1f8:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 1ff:	90                   	nop

00000200 <stat>:

int stat(const char *n, struct stat *st) {
 200:	55                   	push   %ebp
 201:	89 e5                	mov    %esp,%ebp
 203:	56                   	push   %esi
 204:	53                   	push   %ebx
    int fd;
    int r;

    fd = open(n, O_RDONLY);
 205:	83 ec 08             	sub    $0x8,%esp
 208:	6a 00                	push   $0x0
 20a:	ff 75 08             	push   0x8(%ebp)
 20d:	e8 19 01 00 00       	call   32b <open>
    if (fd < 0) {
 212:	83 c4 10             	add    $0x10,%esp
 215:	85 c0                	test   %eax,%eax
 217:	78 27                	js     240 <stat+0x40>
        return -1;
    }
    r = fstat(fd, st);
 219:	83 ec 08             	sub    $0x8,%esp
 21c:	ff 75 0c             	push   0xc(%ebp)
 21f:	89 c3                	mov    %eax,%ebx
 221:	50                   	push   %eax
 222:	e8 cc 00 00 00       	call   2f3 <fstat>
    close(fd);
 227:	89 1c 24             	mov    %ebx,(%esp)
    r = fstat(fd, st);
 22a:	89 c6                	mov    %eax,%esi
    close(fd);
 22c:	e8 2a 01 00 00       	call   35b <close>
    return r;
 231:	83 c4 10             	add    $0x10,%esp
}
 234:	8d 65 f8             	lea    -0x8(%ebp),%esp
 237:	89 f0                	mov    %esi,%eax
 239:	5b                   	pop    %ebx
 23a:	5e                   	pop    %esi
 23b:	5d                   	pop    %ebp
 23c:	c3                   	ret    
 23d:	8d 76 00             	lea    0x0(%esi),%esi
        return -1;
 240:	be ff ff ff ff       	mov    $0xffffffff,%esi
 245:	eb ed                	jmp    234 <stat+0x34>
 247:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 24e:	66 90                	xchg   %ax,%ax

00000250 <atoi>:

int atoi(const char *s) {
 250:	55                   	push   %ebp
 251:	89 e5                	mov    %esp,%ebp
 253:	53                   	push   %ebx
 254:	8b 55 08             	mov    0x8(%ebp),%edx
    int n;

    n = 0;
    while ('0' <= *s && *s <= '9') {
 257:	0f be 02             	movsbl (%edx),%eax
 25a:	8d 48 d0             	lea    -0x30(%eax),%ecx
 25d:	80 f9 09             	cmp    $0x9,%cl
    n = 0;
 260:	b9 00 00 00 00       	mov    $0x0,%ecx
    while ('0' <= *s && *s <= '9') {
 265:	77 1e                	ja     285 <atoi+0x35>
 267:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 26e:	66 90                	xchg   %ax,%ax
        n = n * 10 + *s++ - '0';
 270:	83 c2 01             	add    $0x1,%edx
 273:	8d 0c 89             	lea    (%ecx,%ecx,4),%ecx
 276:	8d 4c 48 d0          	lea    -0x30(%eax,%ecx,2),%ecx
    while ('0' <= *s && *s <= '9') {
 27a:	0f be 02             	movsbl (%edx),%eax
 27d:	8d 58 d0             	lea    -0x30(%eax),%ebx
 280:	80 fb 09             	cmp    $0x9,%bl
 283:	76 eb                	jbe    270 <atoi+0x20>
    }
    return n;
}
 285:	8b 5d fc             	mov    -0x4(%ebp),%ebx
 288:	89 c8                	mov    %ecx,%eax
 28a:	c9                   	leave  
 28b:	c3                   	ret    
 28c:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi

00000290 <memmove>:

void* memmove(void *vdst, const void *vsrc, int n) {
 290:	55                   	push   %ebp
 291:	89 e5                	mov    %esp,%ebp
 293:	57                   	push   %edi
 294:	8b 45 10             	mov    0x10(%ebp),%eax
 297:	8b 55 08             	mov    0x8(%ebp),%edx
 29a:	56                   	push   %esi
 29b:	8b 75 0c             	mov    0xc(%ebp),%esi
    char *dst;
    const char *src;

    dst = vdst;
    src = vsrc;
    while (n-- > 0) {
 29e:	85 c0                	test   %eax,%eax
 2a0:	7e 13                	jle    2b5 <memmove+0x25>
 2a2:	01 d0                	add    %edx,%eax
    dst = vdst;
 2a4:	89 d7                	mov    %edx,%edi
 2a6:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 2ad:	8d 76 00             	lea    0x0(%esi),%esi
        *dst++ = *src++;
 2b0:	a4                   	movsb  %ds:(%esi),%es:(%edi)
    while (n-- > 0) {
 2b1:	39 f8                	cmp    %edi,%eax
 2b3:	75 fb                	jne    2b0 <memmove+0x20>
    }
    return vdst;
}
 2b5:	5e                   	pop    %esi
 2b6:	89 d0                	mov    %edx,%eax
 2b8:	5f                   	pop    %edi
 2b9:	5d                   	pop    %ebp
 2ba:	c3                   	ret    

000002bb <fork>:
name: \
	movl	$SYS_ ## name, %eax; \
	int	$T_SYSCALL; \
	ret

SYSCALL(fork)
 2bb:	b8 01 00 00 00       	mov    $0x1,%eax
 2c0:	cd 40                	int    $0x40
 2c2:	c3                   	ret    

000002c3 <exit>:
SYSCALL(exit)
 2c3:	b8 02 00 00 00       	mov    $0x2,%eax
 2c8:	cd 40                	int    $0x40
 2ca:	c3                   	ret    

000002cb <wait>:
SYSCALL(wait)
 2cb:	b8 03 00 00 00       	mov    $0x3,%eax
 2d0:	cd 40                	int    $0x40
 2d2:	c3                   	ret    

000002d3 <pipe>:
SYSCALL(pipe)
 2d3:	b8 04 00 00 00       	mov    $0x4,%eax
 2d8:	cd 40                	int    $0x40
 2da:	c3                   	ret    

000002db <read>:
SYSCALL(read)
 2db:	b8 05 00 00 00       	mov    $0x5,%eax
 2e0:	cd 40                	int    $0x40
 2e2:	c3                   	ret    

000002e3 <kill>:
SYSCALL(kill)
 2e3:	b8 06 00 00 00       	mov    $0x6,%eax
 2e8:	cd 40                	int    $0x40
 2ea:	c3                   	ret    

000002eb <exec>:
SYSCALL(exec)
 2eb:	b8 07 00 00 00       	mov    $0x7,%eax
 2f0:	cd 40                	int    $0x40
 2f2:	c3                   	ret    

000002f3 <fstat>:
SYSCALL(fstat)
 2f3:	b8 08 00 00 00       	mov    $0x8,%eax
 2f8:	cd 40                	int    $0x40
 2fa:	c3                   	ret    

000002fb <chdir>:
SYSCALL(chdir)
 2fb:	b8 09 00 00 00       	mov    $0x9,%eax
 300:	cd 40                	int    $0x40
 302:	c3                   	ret    

00000303 <dup>:
SYSCALL(dup)
 303:	b8 0a 00 00 00       	mov    $0xa,%eax
 308:	cd 40                	int    $0x40
 30a:	c3                   	ret    

0000030b <getpid>:
SYSCALL(getpid)
 30b:	b8 0b 00 00 00       	mov    $0xb,%eax
 310:	cd 40                	int    $0x40
 312:	c3                   	ret    

00000313 <sbrk>:
SYSCALL(sbrk)
 313:	b8 0c 00 00 00       	mov    $0xc,%eax
 318:	cd 40                	int    $0x40
 31a:	c3                   	ret    

0000031b <sleep>:
SYSCALL(sleep)
 31b:	b8 0d 00 00 00       	mov    $0xd,%eax
 320:	cd 40                	int    $0x40
 322:	c3                   	ret    

00000323 <uptime>:
SYSCALL(uptime)
 323:	b8 0e 00 00 00       	mov    $0xe,%eax
 328:	cd 40                	int    $0x40
 32a:	c3                   	ret    

0000032b <open>:
SYSCALL(open)
 32b:	b8 0f 00 00 00       	mov    $0xf,%eax
 330:	cd 40                	int    $0x40
 332:	c3                   	ret    

00000333 <write>:
SYSCALL(write)
 333:	b8 10 00 00 00       	mov    $0x10,%eax
 338:	cd 40                	int    $0x40
 33a:	c3                   	ret    

0000033b <mknod>:
SYSCALL(mknod)
 33b:	b8 11 00 00 00       	mov    $0x11,%eax
 340:	cd 40                	int    $0x40
 342:	c3                   	ret    

00000343 <unlink>:
SYSCALL(unlink)
 343:	b8 12 00 00 00       	mov    $0x12,%eax
 348:	cd 40                	int    $0x40
 34a:	c3                   	ret    

0000034b <link>:
SYSCALL(link)
 34b:	b8 13 00 00 00       	mov    $0x13,%eax
 350:	cd 40                	int    $0x40
 352:	c3                   	ret    

00000353 <mkdir>:
SYSCALL(mkdir)
 353:	b8 14 00 00 00       	mov    $0x14,%eax
 358:	cd 40                	int    $0x40
 35a:	c3                   	ret    

0000035b <close>:
SYSCALL(close)
 35b:	b8 15 00 00 00       	mov    $0x15,%eax
 360:	cd 40                	int    $0x40
 362:	c3                   	ret    

00000363 <getch>:
SYSCALL(getch)
 363:	b8 16 00 00 00       	mov    $0x16,%eax
 368:	cd 40                	int    $0x40
 36a:	c3                   	ret    

0000036b <greeting>:
SYSCALL(greeting)
 36b:	b8 17 00 00 00       	mov    $0x17,%eax
 370:	cd 40                	int    $0x40
 372:	c3                   	ret    

00000373 <shutdown>:
SYSCALL(shutdown)
 373:	b8 18 00 00 00       	mov    $0x18,%eax
 378:	cd 40                	int    $0x40
 37a:	c3                   	ret    

0000037b <screen>:
SYSCALL(screen)
 37b:	b8 19 00 00 00       	mov    $0x19,%eax
 380:	cd 40                	int    $0x40
 382:	c3                   	ret    

00000383 <cls>:
SYSCALL(cls)
 383:	b8 1a 00 00 00       	mov    $0x1a,%eax
 388:	cd 40                	int    $0x40
 38a:	c3                   	ret    
 38b:	66 90                	xchg   %ax,%ax
 38d:	66 90                	xchg   %ax,%ax
 38f:	90                   	nop

00000390 <printint>:

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

static void printint(int fd, int xx, int base, int sgn) {
 390:	55                   	push   %ebp
 391:	89 e5                	mov    %esp,%ebp
 393:	57                   	push   %edi
 394:	56                   	push   %esi
 395:	53                   	push   %ebx
 396:	83 ec 3c             	sub    $0x3c,%esp
 399:	89 4d c4             	mov    %ecx,-0x3c(%ebp)
    uint x;

    neg = 0;
    if (sgn && xx < 0) {
        neg = 1;
        x = -xx;
 39c:	89 d1                	mov    %edx,%ecx
static void printint(int fd, int xx, int base, int sgn) {
 39e:	89 45 b8             	mov    %eax,-0x48(%ebp)
    if (sgn && xx < 0) {
 3a1:	85 d2                	test   %edx,%edx
 3a3:	0f 89 7f 00 00 00    	jns    428 <printint+0x98>
 3a9:	f6 45 08 01          	testb  $0x1,0x8(%ebp)
 3ad:	74 79                	je     428 <printint+0x98>
        neg = 1;
 3af:	c7 45 bc 01 00 00 00 	movl   $0x1,-0x44(%ebp)
        x = -xx;
 3b6:	f7 d9                	neg    %ecx
    }
    else {
        x = xx;
    }

    i = 0;
 3b8:	31 db                	xor    %ebx,%ebx
 3ba:	8d 75 d7             	lea    -0x29(%ebp),%esi
 3bd:	8d 76 00             	lea    0x0(%esi),%esi
    do {
        buf[i++] = digits[x % base];
 3c0:	89 c8                	mov    %ecx,%eax
 3c2:	31 d2                	xor    %edx,%edx
 3c4:	89 cf                	mov    %ecx,%edi
 3c6:	f7 75 c4             	divl   -0x3c(%ebp)
 3c9:	0f b6 92 d0 07 00 00 	movzbl 0x7d0(%edx),%edx
 3d0:	89 45 c0             	mov    %eax,-0x40(%ebp)
 3d3:	89 d8                	mov    %ebx,%eax
 3d5:	8d 5b 01             	lea    0x1(%ebx),%ebx
    }
    while ((x /= base) != 0);
 3d8:	8b 4d c0             	mov    -0x40(%ebp),%ecx
        buf[i++] = digits[x % base];
 3db:	88 14 1e             	mov    %dl,(%esi,%ebx,1)
    while ((x /= base) != 0);
 3de:	39 7d c4             	cmp    %edi,-0x3c(%ebp)
 3e1:	76 dd                	jbe    3c0 <printint+0x30>
    if (neg) {
 3e3:	8b 4d bc             	mov    -0x44(%ebp),%ecx
 3e6:	85 c9                	test   %ecx,%ecx
 3e8:	74 0c                	je     3f6 <printint+0x66>
        buf[i++] = '-';
 3ea:	c6 44 1d d8 2d       	movb   $0x2d,-0x28(%ebp,%ebx,1)
        buf[i++] = digits[x % base];
 3ef:	89 d8                	mov    %ebx,%eax
        buf[i++] = '-';
 3f1:	ba 2d 00 00 00       	mov    $0x2d,%edx
    }

    while (--i >= 0) {
 3f6:	8b 7d b8             	mov    -0x48(%ebp),%edi
 3f9:	8d 5c 05 d7          	lea    -0x29(%ebp,%eax,1),%ebx
 3fd:	eb 07                	jmp    406 <printint+0x76>
 3ff:	90                   	nop
        putc(fd, buf[i]);
 400:	0f b6 13             	movzbl (%ebx),%edx
 403:	83 eb 01             	sub    $0x1,%ebx
    write(fd, &c, 1);
 406:	83 ec 04             	sub    $0x4,%esp
 409:	88 55 d7             	mov    %dl,-0x29(%ebp)
 40c:	6a 01                	push   $0x1
 40e:	56                   	push   %esi
 40f:	57                   	push   %edi
 410:	e8 1e ff ff ff       	call   333 <write>
    while (--i >= 0) {
 415:	83 c4 10             	add    $0x10,%esp
 418:	39 de                	cmp    %ebx,%esi
 41a:	75 e4                	jne    400 <printint+0x70>
    }
}
 41c:	8d 65 f4             	lea    -0xc(%ebp),%esp
 41f:	5b                   	pop    %ebx
 420:	5e                   	pop    %esi
 421:	5f                   	pop    %edi
 422:	5d                   	pop    %ebp
 423:	c3                   	ret    
 424:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
    neg = 0;
 428:	c7 45 bc 00 00 00 00 	movl   $0x0,-0x44(%ebp)
 42f:	eb 87                	jmp    3b8 <printint+0x28>
 431:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 438:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 43f:	90                   	nop

00000440 <printf>:

// Print to the given fd. Only understands %d, %x, %p, %s.
void printf(int fd, const char *fmt, ...) {
 440:	55                   	push   %ebp
 441:	89 e5                	mov    %esp,%ebp
 443:	57                   	push   %edi
 444:	56                   	push   %esi
 445:	53                   	push   %ebx
 446:	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++) {
 449:	8b 5d 0c             	mov    0xc(%ebp),%ebx
void printf(int fd, const char *fmt, ...) {
 44c:	8b 75 08             	mov    0x8(%ebp),%esi
    for (i = 0; fmt[i]; i++) {
 44f:	0f b6 13             	movzbl (%ebx),%edx
 452:	84 d2                	test   %dl,%dl
 454:	74 6a                	je     4c0 <printf+0x80>
    ap = (uint*)(void*)&fmt + 1;
 456:	8d 45 10             	lea    0x10(%ebp),%eax
 459:	83 c3 01             	add    $0x1,%ebx
    write(fd, &c, 1);
 45c:	8d 7d e7             	lea    -0x19(%ebp),%edi
    state = 0;
 45f:	31 c9                	xor    %ecx,%ecx
    ap = (uint*)(void*)&fmt + 1;
 461:	89 45 d0             	mov    %eax,-0x30(%ebp)
 464:	eb 36                	jmp    49c <printf+0x5c>
 466:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 46d:	8d 76 00             	lea    0x0(%esi),%esi
 470:	89 4d d4             	mov    %ecx,-0x2c(%ebp)
        c = fmt[i] & 0xff;
        if (state == 0) {
            if (c == '%') {
                state = '%';
 473:	b9 25 00 00 00       	mov    $0x25,%ecx
            if (c == '%') {
 478:	83 f8 25             	cmp    $0x25,%eax
 47b:	74 15                	je     492 <printf+0x52>
    write(fd, &c, 1);
 47d:	83 ec 04             	sub    $0x4,%esp
 480:	88 55 e7             	mov    %dl,-0x19(%ebp)
 483:	6a 01                	push   $0x1
 485:	57                   	push   %edi
 486:	56                   	push   %esi
 487:	e8 a7 fe ff ff       	call   333 <write>
 48c:	8b 4d d4             	mov    -0x2c(%ebp),%ecx
            }
            else {
                putc(fd, c);
 48f:	83 c4 10             	add    $0x10,%esp
    for (i = 0; fmt[i]; i++) {
 492:	0f b6 13             	movzbl (%ebx),%edx
 495:	83 c3 01             	add    $0x1,%ebx
 498:	84 d2                	test   %dl,%dl
 49a:	74 24                	je     4c0 <printf+0x80>
        c = fmt[i] & 0xff;
 49c:	0f b6 c2             	movzbl %dl,%eax
        if (state == 0) {
 49f:	85 c9                	test   %ecx,%ecx
 4a1:	74 cd                	je     470 <printf+0x30>
            }
        }
        else if (state == '%') {
 4a3:	83 f9 25             	cmp    $0x25,%ecx
 4a6:	75 ea                	jne    492 <printf+0x52>
            if (c == 'd') {
 4a8:	83 f8 25             	cmp    $0x25,%eax
 4ab:	0f 84 07 01 00 00    	je     5b8 <printf+0x178>
 4b1:	83 e8 63             	sub    $0x63,%eax
 4b4:	83 f8 15             	cmp    $0x15,%eax
 4b7:	77 17                	ja     4d0 <printf+0x90>
 4b9:	ff 24 85 78 07 00 00 	jmp    *0x778(,%eax,4)
                putc(fd, c);
            }
            state = 0;
        }
    }
}
 4c0:	8d 65 f4             	lea    -0xc(%ebp),%esp
 4c3:	5b                   	pop    %ebx
 4c4:	5e                   	pop    %esi
 4c5:	5f                   	pop    %edi
 4c6:	5d                   	pop    %ebp
 4c7:	c3                   	ret    
 4c8:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 4cf:	90                   	nop
    write(fd, &c, 1);
 4d0:	83 ec 04             	sub    $0x4,%esp
 4d3:	88 55 d4             	mov    %dl,-0x2c(%ebp)
 4d6:	6a 01                	push   $0x1
 4d8:	57                   	push   %edi
 4d9:	56                   	push   %esi
 4da:	c6 45 e7 25          	movb   $0x25,-0x19(%ebp)
 4de:	e8 50 fe ff ff       	call   333 <write>
                putc(fd, c);
 4e3:	0f b6 55 d4          	movzbl -0x2c(%ebp),%edx
    write(fd, &c, 1);
 4e7:	83 c4 0c             	add    $0xc,%esp
 4ea:	88 55 e7             	mov    %dl,-0x19(%ebp)
 4ed:	6a 01                	push   $0x1
 4ef:	57                   	push   %edi
 4f0:	56                   	push   %esi
 4f1:	e8 3d fe ff ff       	call   333 <write>
                putc(fd, c);
 4f6:	83 c4 10             	add    $0x10,%esp
            state = 0;
 4f9:	31 c9                	xor    %ecx,%ecx
 4fb:	eb 95                	jmp    492 <printf+0x52>
 4fd:	8d 76 00             	lea    0x0(%esi),%esi
                printint(fd, *ap, 16, 0);
 500:	83 ec 0c             	sub    $0xc,%esp
 503:	b9 10 00 00 00       	mov    $0x10,%ecx
 508:	6a 00                	push   $0x0
 50a:	8b 45 d0             	mov    -0x30(%ebp),%eax
 50d:	8b 10                	mov    (%eax),%edx
 50f:	89 f0                	mov    %esi,%eax
 511:	e8 7a fe ff ff       	call   390 <printint>
                ap++;
 516:	83 45 d0 04          	addl   $0x4,-0x30(%ebp)
 51a:	83 c4 10             	add    $0x10,%esp
            state = 0;
 51d:	31 c9                	xor    %ecx,%ecx
 51f:	e9 6e ff ff ff       	jmp    492 <printf+0x52>
 524:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
                s = (char*)*ap;
 528:	8b 45 d0             	mov    -0x30(%ebp),%eax
 52b:	8b 10                	mov    (%eax),%edx
                ap++;
 52d:	83 c0 04             	add    $0x4,%eax
 530:	89 45 d0             	mov    %eax,-0x30(%ebp)
                if (s == 0) {
 533:	85 d2                	test   %edx,%edx
 535:	0f 84 8d 00 00 00    	je     5c8 <printf+0x188>
                while (*s != 0) {
 53b:	0f b6 02             	movzbl (%edx),%eax
            state = 0;
 53e:	31 c9                	xor    %ecx,%ecx
                while (*s != 0) {
 540:	84 c0                	test   %al,%al
 542:	0f 84 4a ff ff ff    	je     492 <printf+0x52>
 548:	89 5d d4             	mov    %ebx,-0x2c(%ebp)
 54b:	89 d3                	mov    %edx,%ebx
 54d:	8d 76 00             	lea    0x0(%esi),%esi
    write(fd, &c, 1);
 550:	83 ec 04             	sub    $0x4,%esp
                    s++;
 553:	83 c3 01             	add    $0x1,%ebx
 556:	88 45 e7             	mov    %al,-0x19(%ebp)
    write(fd, &c, 1);
 559:	6a 01                	push   $0x1
 55b:	57                   	push   %edi
 55c:	56                   	push   %esi
 55d:	e8 d1 fd ff ff       	call   333 <write>
                while (*s != 0) {
 562:	0f b6 03             	movzbl (%ebx),%eax
 565:	83 c4 10             	add    $0x10,%esp
 568:	84 c0                	test   %al,%al
 56a:	75 e4                	jne    550 <printf+0x110>
            state = 0;
 56c:	8b 5d d4             	mov    -0x2c(%ebp),%ebx
 56f:	31 c9                	xor    %ecx,%ecx
 571:	e9 1c ff ff ff       	jmp    492 <printf+0x52>
 576:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 57d:	8d 76 00             	lea    0x0(%esi),%esi
                printint(fd, *ap, 10, 1);
 580:	83 ec 0c             	sub    $0xc,%esp
 583:	b9 0a 00 00 00       	mov    $0xa,%ecx
 588:	6a 01                	push   $0x1
 58a:	e9 7b ff ff ff       	jmp    50a <printf+0xca>
 58f:	90                   	nop
                putc(fd, *ap);
 590:	8b 45 d0             	mov    -0x30(%ebp),%eax
    write(fd, &c, 1);
 593:	83 ec 04             	sub    $0x4,%esp
                putc(fd, *ap);
 596:	8b 00                	mov    (%eax),%eax
    write(fd, &c, 1);
 598:	6a 01                	push   $0x1
 59a:	57                   	push   %edi
 59b:	56                   	push   %esi
                putc(fd, *ap);
 59c:	88 45 e7             	mov    %al,-0x19(%ebp)
    write(fd, &c, 1);
 59f:	e8 8f fd ff ff       	call   333 <write>
                ap++;
 5a4:	83 45 d0 04          	addl   $0x4,-0x30(%ebp)
 5a8:	83 c4 10             	add    $0x10,%esp
            state = 0;
 5ab:	31 c9                	xor    %ecx,%ecx
 5ad:	e9 e0 fe ff ff       	jmp    492 <printf+0x52>
 5b2:	8d b6 00 00 00 00    	lea    0x0(%esi),%esi
                putc(fd, c);
 5b8:	88 55 e7             	mov    %dl,-0x19(%ebp)
    write(fd, &c, 1);
 5bb:	83 ec 04             	sub    $0x4,%esp
 5be:	e9 2a ff ff ff       	jmp    4ed <printf+0xad>
 5c3:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
 5c7:	90                   	nop
                    s = "(null)";
 5c8:	ba 71 07 00 00       	mov    $0x771,%edx
                while (*s != 0) {
 5cd:	89 5d d4             	mov    %ebx,-0x2c(%ebp)
 5d0:	b8 28 00 00 00       	mov    $0x28,%eax
 5d5:	89 d3                	mov    %edx,%ebx
 5d7:	e9 74 ff ff ff       	jmp    550 <printf+0x110>
 5dc:	66 90                	xchg   %ax,%ax
 5de:	66 90                	xchg   %ax,%ax

000005e0 <free>:
typedef union header Header;

static Header base;
static Header *freep;

void free(void *ap) {
 5e0:	55                   	push   %ebp
    Header *bp, *p;

    bp = (Header*)ap - 1;
    for (p = freep; !(bp > p && bp < p->s.ptr); p = p->s.ptr) {
 5e1:	a1 84 0a 00 00       	mov    0xa84,%eax
void free(void *ap) {
 5e6:	89 e5                	mov    %esp,%ebp
 5e8:	57                   	push   %edi
 5e9:	56                   	push   %esi
 5ea:	53                   	push   %ebx
 5eb:	8b 5d 08             	mov    0x8(%ebp),%ebx
    bp = (Header*)ap - 1;
 5ee:	8d 4b f8             	lea    -0x8(%ebx),%ecx
    for (p = freep; !(bp > p && bp < p->s.ptr); p = p->s.ptr) {
 5f1:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 5f8:	89 c2                	mov    %eax,%edx
 5fa:	8b 00                	mov    (%eax),%eax
 5fc:	39 ca                	cmp    %ecx,%edx
 5fe:	73 30                	jae    630 <free+0x50>
 600:	39 c1                	cmp    %eax,%ecx
 602:	72 04                	jb     608 <free+0x28>
        if (p >= p->s.ptr && (bp > p || bp < p->s.ptr)) {
 604:	39 c2                	cmp    %eax,%edx
 606:	72 f0                	jb     5f8 <free+0x18>
            break;
        }
    }
    if (bp + bp->s.size == p->s.ptr) {
 608:	8b 73 fc             	mov    -0x4(%ebx),%esi
 60b:	8d 3c f1             	lea    (%ecx,%esi,8),%edi
 60e:	39 f8                	cmp    %edi,%eax
 610:	74 30                	je     642 <free+0x62>
        bp->s.size += p->s.ptr->s.size;
        bp->s.ptr = p->s.ptr->s.ptr;
 612:	89 43 f8             	mov    %eax,-0x8(%ebx)
    }
    else {
        bp->s.ptr = p->s.ptr;
    }
    if (p + p->s.size == bp) {
 615:	8b 42 04             	mov    0x4(%edx),%eax
 618:	8d 34 c2             	lea    (%edx,%eax,8),%esi
 61b:	39 f1                	cmp    %esi,%ecx
 61d:	74 3a                	je     659 <free+0x79>
        p->s.size += bp->s.size;
        p->s.ptr = bp->s.ptr;
 61f:	89 0a                	mov    %ecx,(%edx)
    }
    else {
        p->s.ptr = bp;
    }
    freep = p;
}
 621:	5b                   	pop    %ebx
    freep = p;
 622:	89 15 84 0a 00 00    	mov    %edx,0xa84
}
 628:	5e                   	pop    %esi
 629:	5f                   	pop    %edi
 62a:	5d                   	pop    %ebp
 62b:	c3                   	ret    
 62c:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
        if (p >= p->s.ptr && (bp > p || bp < p->s.ptr)) {
 630:	39 c2                	cmp    %eax,%edx
 632:	72 c4                	jb     5f8 <free+0x18>
 634:	39 c1                	cmp    %eax,%ecx
 636:	73 c0                	jae    5f8 <free+0x18>
    if (bp + bp->s.size == p->s.ptr) {
 638:	8b 73 fc             	mov    -0x4(%ebx),%esi
 63b:	8d 3c f1             	lea    (%ecx,%esi,8),%edi
 63e:	39 f8                	cmp    %edi,%eax
 640:	75 d0                	jne    612 <free+0x32>
        bp->s.size += p->s.ptr->s.size;
 642:	03 70 04             	add    0x4(%eax),%esi
 645:	89 73 fc             	mov    %esi,-0x4(%ebx)
        bp->s.ptr = p->s.ptr->s.ptr;
 648:	8b 02                	mov    (%edx),%eax
 64a:	8b 00                	mov    (%eax),%eax
 64c:	89 43 f8             	mov    %eax,-0x8(%ebx)
    if (p + p->s.size == bp) {
 64f:	8b 42 04             	mov    0x4(%edx),%eax
 652:	8d 34 c2             	lea    (%edx,%eax,8),%esi
 655:	39 f1                	cmp    %esi,%ecx
 657:	75 c6                	jne    61f <free+0x3f>
        p->s.size += bp->s.size;
 659:	03 43 fc             	add    -0x4(%ebx),%eax
    freep = p;
 65c:	89 15 84 0a 00 00    	mov    %edx,0xa84
        p->s.size += bp->s.size;
 662:	89 42 04             	mov    %eax,0x4(%edx)
        p->s.ptr = bp->s.ptr;
 665:	8b 4b f8             	mov    -0x8(%ebx),%ecx
 668:	89 0a                	mov    %ecx,(%edx)
}
 66a:	5b                   	pop    %ebx
 66b:	5e                   	pop    %esi
 66c:	5f                   	pop    %edi
 66d:	5d                   	pop    %ebp
 66e:	c3                   	ret    
 66f:	90                   	nop

00000670 <malloc>:
    hp->s.size = nu;
    free((void*)(hp + 1));
    return freep;
}

void* malloc(uint nbytes) {
 670:	55                   	push   %ebp
 671:	89 e5                	mov    %esp,%ebp
 673:	57                   	push   %edi
 674:	56                   	push   %esi
 675:	53                   	push   %ebx
 676:	83 ec 1c             	sub    $0x1c,%esp
    Header *p, *prevp;
    uint nunits;

    nunits = (nbytes + sizeof(Header) - 1) / sizeof(Header) + 1;
 679:	8b 45 08             	mov    0x8(%ebp),%eax
    if ((prevp = freep) == 0) {
 67c:	8b 3d 84 0a 00 00    	mov    0xa84,%edi
    nunits = (nbytes + sizeof(Header) - 1) / sizeof(Header) + 1;
 682:	8d 70 07             	lea    0x7(%eax),%esi
 685:	c1 ee 03             	shr    $0x3,%esi
 688:	83 c6 01             	add    $0x1,%esi
    if ((prevp = freep) == 0) {
 68b:	85 ff                	test   %edi,%edi
 68d:	0f 84 9d 00 00 00    	je     730 <malloc+0xc0>
        base.s.ptr = freep = prevp = &base;
        base.s.size = 0;
    }
    for (p = prevp->s.ptr;; prevp = p, p = p->s.ptr) {
 693:	8b 17                	mov    (%edi),%edx
        if (p->s.size >= nunits) {
 695:	8b 4a 04             	mov    0x4(%edx),%ecx
 698:	39 f1                	cmp    %esi,%ecx
 69a:	73 6a                	jae    706 <malloc+0x96>
 69c:	bb 00 10 00 00       	mov    $0x1000,%ebx
 6a1:	39 de                	cmp    %ebx,%esi
 6a3:	0f 43 de             	cmovae %esi,%ebx
    p = sbrk(nu * sizeof(Header));
 6a6:	8d 04 dd 00 00 00 00 	lea    0x0(,%ebx,8),%eax
 6ad:	89 45 e4             	mov    %eax,-0x1c(%ebp)
 6b0:	eb 17                	jmp    6c9 <malloc+0x59>
 6b2:	8d b6 00 00 00 00    	lea    0x0(%esi),%esi
    for (p = prevp->s.ptr;; prevp = p, p = p->s.ptr) {
 6b8:	8b 02                	mov    (%edx),%eax
        if (p->s.size >= nunits) {
 6ba:	8b 48 04             	mov    0x4(%eax),%ecx
 6bd:	39 f1                	cmp    %esi,%ecx
 6bf:	73 4f                	jae    710 <malloc+0xa0>
                p->s.size = nunits;
            }
            freep = prevp;
            return (void*)(p + 1);
        }
        if (p == freep) {
 6c1:	8b 3d 84 0a 00 00    	mov    0xa84,%edi
 6c7:	89 c2                	mov    %eax,%edx
 6c9:	39 d7                	cmp    %edx,%edi
 6cb:	75 eb                	jne    6b8 <malloc+0x48>
    p = sbrk(nu * sizeof(Header));
 6cd:	83 ec 0c             	sub    $0xc,%esp
 6d0:	ff 75 e4             	push   -0x1c(%ebp)
 6d3:	e8 3b fc ff ff       	call   313 <sbrk>
    if (p == (char*)-1) {
 6d8:	83 c4 10             	add    $0x10,%esp
 6db:	83 f8 ff             	cmp    $0xffffffff,%eax
 6de:	74 1c                	je     6fc <malloc+0x8c>
    hp->s.size = nu;
 6e0:	89 58 04             	mov    %ebx,0x4(%eax)
    free((void*)(hp + 1));
 6e3:	83 ec 0c             	sub    $0xc,%esp
 6e6:	83 c0 08             	add    $0x8,%eax
 6e9:	50                   	push   %eax
 6ea:	e8 f1 fe ff ff       	call   5e0 <free>
    return freep;
 6ef:	8b 15 84 0a 00 00    	mov    0xa84,%edx
            if ((p = morecore(nunits)) == 0) {
 6f5:	83 c4 10             	add    $0x10,%esp
 6f8:	85 d2                	test   %edx,%edx
 6fa:	75 bc                	jne    6b8 <malloc+0x48>
                return 0;
            }
        }
    }
}
 6fc:	8d 65 f4             	lea    -0xc(%ebp),%esp
                return 0;
 6ff:	31 c0                	xor    %eax,%eax
}
 701:	5b                   	pop    %ebx
 702:	5e                   	pop    %esi
 703:	5f                   	pop    %edi
 704:	5d                   	pop    %ebp
 705:	c3                   	ret    
        if (p->s.size >= nunits) {
 706:	89 d0                	mov    %edx,%eax
 708:	89 fa                	mov    %edi,%edx
 70a:	8d b6 00 00 00 00    	lea    0x0(%esi),%esi
            if (p->s.size == nunits) {
 710:	39 ce                	cmp    %ecx,%esi
 712:	74 4c                	je     760 <malloc+0xf0>
                p->s.size -= nunits;
 714:	29 f1                	sub    %esi,%ecx
 716:	89 48 04             	mov    %ecx,0x4(%eax)
                p += p->s.size;
 719:	8d 04 c8             	lea    (%eax,%ecx,8),%eax
                p->s.size = nunits;
 71c:	89 70 04             	mov    %esi,0x4(%eax)
            freep = prevp;
 71f:	89 15 84 0a 00 00    	mov    %edx,0xa84
}
 725:	8d 65 f4             	lea    -0xc(%ebp),%esp
            return (void*)(p + 1);
 728:	83 c0 08             	add    $0x8,%eax
}
 72b:	5b                   	pop    %ebx
 72c:	5e                   	pop    %esi
 72d:	5f                   	pop    %edi
 72e:	5d                   	pop    %ebp
 72f:	c3                   	ret    
        base.s.ptr = freep = prevp = &base;
 730:	c7 05 84 0a 00 00 88 	movl   $0xa88,0xa84
 737:	0a 00 00 
        base.s.size = 0;
 73a:	bf 88 0a 00 00       	mov    $0xa88,%edi
        base.s.ptr = freep = prevp = &base;
 73f:	c7 05 88 0a 00 00 88 	movl   $0xa88,0xa88
 746:	0a 00 00 
    for (p = prevp->s.ptr;; prevp = p, p = p->s.ptr) {
 749:	89 fa                	mov    %edi,%edx
        base.s.size = 0;
 74b:	c7 05 8c 0a 00 00 00 	movl   $0x0,0xa8c
 752:	00 00 00 
        if (p->s.size >= nunits) {
 755:	e9 42 ff ff ff       	jmp    69c <malloc+0x2c>
 75a:	8d b6 00 00 00 00    	lea    0x0(%esi),%esi
                prevp->s.ptr = p->s.ptr;
 760:	8b 08                	mov    (%eax),%ecx
 762:	89 0a                	mov    %ecx,(%edx)
 764:	eb b9                	jmp    71f <malloc+0xaf>