
_mkdir:     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:	bf 01 00 00 00       	mov    $0x1,%edi
  13:	56                   	push   %esi
  14:	53                   	push   %ebx
  15:	51                   	push   %ecx
  16:	83 ec 08             	sub    $0x8,%esp
  19:	8b 59 04             	mov    0x4(%ecx),%ebx
  1c:	8b 31                	mov    (%ecx),%esi
  1e:	83 c3 04             	add    $0x4,%ebx
    int i;

    if (argc < 2) {
  21:	83 fe 01             	cmp    $0x1,%esi
  24:	7e 3e                	jle    64 <main+0x64>
  26:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
  2d:	8d 76 00             	lea    0x0(%esi),%esi
        printf(2, "Usage: mkdir files...\n");
        exit();
    }

    for (i = 1; i < argc; i++) {
        if (mkdir(argv[i]) < 0) {
  30:	83 ec 0c             	sub    $0xc,%esp
  33:	ff 33                	push   (%ebx)
  35:	e8 29 03 00 00       	call   363 <mkdir>
  3a:	83 c4 10             	add    $0x10,%esp
  3d:	85 c0                	test   %eax,%eax
  3f:	78 0f                	js     50 <main+0x50>
    for (i = 1; i < argc; i++) {
  41:	83 c7 01             	add    $0x1,%edi
  44:	83 c3 04             	add    $0x4,%ebx
  47:	39 fe                	cmp    %edi,%esi
  49:	75 e5                	jne    30 <main+0x30>
            printf(2, "mkdir: %s failed to create\n", argv[i]);
            break;
        }
    }

    exit();
  4b:	e8 83 02 00 00       	call   2d3 <exit>
            printf(2, "mkdir: %s failed to create\n", argv[i]);
  50:	50                   	push   %eax
  51:	ff 33                	push   (%ebx)
  53:	68 8f 07 00 00       	push   $0x78f
  58:	6a 02                	push   $0x2
  5a:	e8 f1 03 00 00       	call   450 <printf>
            break;
  5f:	83 c4 10             	add    $0x10,%esp
  62:	eb e7                	jmp    4b <main+0x4b>
        printf(2, "Usage: mkdir files...\n");
  64:	52                   	push   %edx
  65:	52                   	push   %edx
  66:	68 78 07 00 00       	push   $0x778
  6b:	6a 02                	push   $0x2
  6d:	e8 de 03 00 00       	call   450 <printf>
        exit();
  72:	e8 5c 02 00 00       	call   2d3 <exit>
  77:	66 90                	xchg   %ax,%ax
  79:	66 90                	xchg   %ax,%ax
  7b:	66 90                	xchg   %ax,%ax
  7d:	66 90                	xchg   %ax,%ax
  7f:	90                   	nop

00000080 <strcpy>:
#include "stat.h"
#include "fcntl.h"
#include "user.h"
#include "x86.h"

char*strcpy(char *s, const char *t) {
  80:	55                   	push   %ebp
    char *os;

    os = s;
    while ((*s++ = *t++) != 0) {
  81:	31 c0                	xor    %eax,%eax
char*strcpy(char *s, const char *t) {
  83:	89 e5                	mov    %esp,%ebp
  85:	53                   	push   %ebx
  86:	8b 4d 08             	mov    0x8(%ebp),%ecx
  89:	8b 5d 0c             	mov    0xc(%ebp),%ebx
  8c:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
    while ((*s++ = *t++) != 0) {
  90:	0f b6 14 03          	movzbl (%ebx,%eax,1),%edx
  94:	88 14 01             	mov    %dl,(%ecx,%eax,1)
  97:	83 c0 01             	add    $0x1,%eax
  9a:	84 d2                	test   %dl,%dl
  9c:	75 f2                	jne    90 <strcpy+0x10>
        ;
    }
    return os;
}
  9e:	8b 5d fc             	mov    -0x4(%ebp),%ebx
  a1:	89 c8                	mov    %ecx,%eax
  a3:	c9                   	leave  
  a4:	c3                   	ret    
  a5:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
  ac:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi

000000b0 <strcmp>:

int strcmp(const char *p, const char *q) {
  b0:	55                   	push   %ebp
  b1:	89 e5                	mov    %esp,%ebp
  b3:	53                   	push   %ebx
  b4:	8b 55 08             	mov    0x8(%ebp),%edx
  b7:	8b 4d 0c             	mov    0xc(%ebp),%ecx
    while (*p && *p == *q) {
  ba:	0f b6 02             	movzbl (%edx),%eax
  bd:	84 c0                	test   %al,%al
  bf:	75 17                	jne    d8 <strcmp+0x28>
  c1:	eb 3a                	jmp    fd <strcmp+0x4d>
  c3:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
  c7:	90                   	nop
  c8:	0f b6 42 01          	movzbl 0x1(%edx),%eax
        p++, q++;
  cc:	83 c2 01             	add    $0x1,%edx
  cf:	8d 59 01             	lea    0x1(%ecx),%ebx
    while (*p && *p == *q) {
  d2:	84 c0                	test   %al,%al
  d4:	74 1a                	je     f0 <strcmp+0x40>
        p++, q++;
  d6:	89 d9                	mov    %ebx,%ecx
    while (*p && *p == *q) {
  d8:	0f b6 19             	movzbl (%ecx),%ebx
  db:	38 c3                	cmp    %al,%bl
  dd:	74 e9                	je     c8 <strcmp+0x18>
    }
    return (uchar) * p - (uchar) * q;
  df:	29 d8                	sub    %ebx,%eax
}
  e1:	8b 5d fc             	mov    -0x4(%ebp),%ebx
  e4:	c9                   	leave  
  e5:	c3                   	ret    
  e6:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
  ed:	8d 76 00             	lea    0x0(%esi),%esi
    return (uchar) * p - (uchar) * q;
  f0:	0f b6 59 01          	movzbl 0x1(%ecx),%ebx
  f4:	31 c0                	xor    %eax,%eax
  f6:	29 d8                	sub    %ebx,%eax
}
  f8:	8b 5d fc             	mov    -0x4(%ebp),%ebx
  fb:	c9                   	leave  
  fc:	c3                   	ret    
    return (uchar) * p - (uchar) * q;
  fd:	0f b6 19             	movzbl (%ecx),%ebx
 100:	31 c0                	xor    %eax,%eax
 102:	eb db                	jmp    df <strcmp+0x2f>
 104:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 10b:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
 10f:	90                   	nop

00000110 <strlen>:

uint strlen(const char *s)      {
 110:	55                   	push   %ebp
 111:	89 e5                	mov    %esp,%ebp
 113:	8b 55 08             	mov    0x8(%ebp),%edx
    int n;

    for (n = 0; s[n]; n++) {
 116:	80 3a 00             	cmpb   $0x0,(%edx)
 119:	74 15                	je     130 <strlen+0x20>
 11b:	31 c0                	xor    %eax,%eax
 11d:	8d 76 00             	lea    0x0(%esi),%esi
 120:	83 c0 01             	add    $0x1,%eax
 123:	80 3c 02 00          	cmpb   $0x0,(%edx,%eax,1)
 127:	89 c1                	mov    %eax,%ecx
 129:	75 f5                	jne    120 <strlen+0x10>
        ;
    }
    return n;
}
 12b:	89 c8                	mov    %ecx,%eax
 12d:	5d                   	pop    %ebp
 12e:	c3                   	ret    
 12f:	90                   	nop
    for (n = 0; s[n]; n++) {
 130:	31 c9                	xor    %ecx,%ecx
}
 132:	5d                   	pop    %ebp
 133:	89 c8                	mov    %ecx,%eax
 135:	c3                   	ret    
 136:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 13d:	8d 76 00             	lea    0x0(%esi),%esi

00000140 <memset>:

void* memset(void *dst, int c, uint n) {
 140:	55                   	push   %ebp
 141:	89 e5                	mov    %esp,%ebp
 143:	57                   	push   %edi
 144:	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" :
 147:	8b 4d 10             	mov    0x10(%ebp),%ecx
 14a:	8b 45 0c             	mov    0xc(%ebp),%eax
 14d:	89 d7                	mov    %edx,%edi
 14f:	fc                   	cld    
 150:	f3 aa                	rep stos %al,%es:(%edi)
    stosb(dst, c, n);
    return dst;
}
 152:	8b 7d fc             	mov    -0x4(%ebp),%edi
 155:	89 d0                	mov    %edx,%eax
 157:	c9                   	leave  
 158:	c3                   	ret    
 159:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi

00000160 <strchr>:

char* strchr(const char *s, char c) {
 160:	55                   	push   %ebp
 161:	89 e5                	mov    %esp,%ebp
 163:	8b 45 08             	mov    0x8(%ebp),%eax
 166:	0f b6 4d 0c          	movzbl 0xc(%ebp),%ecx
    for (; *s; s++) {
 16a:	0f b6 10             	movzbl (%eax),%edx
 16d:	84 d2                	test   %dl,%dl
 16f:	75 12                	jne    183 <strchr+0x23>
 171:	eb 1d                	jmp    190 <strchr+0x30>
 173:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
 177:	90                   	nop
 178:	0f b6 50 01          	movzbl 0x1(%eax),%edx
 17c:	83 c0 01             	add    $0x1,%eax
 17f:	84 d2                	test   %dl,%dl
 181:	74 0d                	je     190 <strchr+0x30>
        if (*s == c) {
 183:	38 d1                	cmp    %dl,%cl
 185:	75 f1                	jne    178 <strchr+0x18>
            return (char*)s;
        }
    }
    return 0;
}
 187:	5d                   	pop    %ebp
 188:	c3                   	ret    
 189:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
    return 0;
 190:	31 c0                	xor    %eax,%eax
}
 192:	5d                   	pop    %ebp
 193:	c3                   	ret    
 194:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 19b:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
 19f:	90                   	nop

000001a0 <gets>:

char* gets(char *buf, int max) {
 1a0:	55                   	push   %ebp
 1a1:	89 e5                	mov    %esp,%ebp
 1a3:	57                   	push   %edi
 1a4:	56                   	push   %esi
    int i, cc;
    char c;

    for (i = 0; i + 1 < max;) {
        cc = read(0, &c, 1);
 1a5:	8d 7d e7             	lea    -0x19(%ebp),%edi
char* gets(char *buf, int max) {
 1a8:	53                   	push   %ebx
    for (i = 0; i + 1 < max;) {
 1a9:	31 db                	xor    %ebx,%ebx
char* gets(char *buf, int max) {
 1ab:	83 ec 1c             	sub    $0x1c,%esp
    for (i = 0; i + 1 < max;) {
 1ae:	eb 27                	jmp    1d7 <gets+0x37>
        cc = read(0, &c, 1);
 1b0:	83 ec 04             	sub    $0x4,%esp
 1b3:	6a 01                	push   $0x1
 1b5:	57                   	push   %edi
 1b6:	6a 00                	push   $0x0
 1b8:	e8 2e 01 00 00       	call   2eb <read>
        if (cc < 1) {
 1bd:	83 c4 10             	add    $0x10,%esp
 1c0:	85 c0                	test   %eax,%eax
 1c2:	7e 1d                	jle    1e1 <gets+0x41>
            break;
        }
        buf[i++] = c;
 1c4:	0f b6 45 e7          	movzbl -0x19(%ebp),%eax
 1c8:	8b 55 08             	mov    0x8(%ebp),%edx
 1cb:	88 44 1a ff          	mov    %al,-0x1(%edx,%ebx,1)
        if (c == '\n' || c == '\r') {
 1cf:	3c 0a                	cmp    $0xa,%al
 1d1:	74 1d                	je     1f0 <gets+0x50>
 1d3:	3c 0d                	cmp    $0xd,%al
 1d5:	74 19                	je     1f0 <gets+0x50>
    for (i = 0; i + 1 < max;) {
 1d7:	89 de                	mov    %ebx,%esi
 1d9:	83 c3 01             	add    $0x1,%ebx
 1dc:	3b 5d 0c             	cmp    0xc(%ebp),%ebx
 1df:	7c cf                	jl     1b0 <gets+0x10>
            break;
        }
    }
    buf[i] = '\0';
 1e1:	8b 45 08             	mov    0x8(%ebp),%eax
 1e4:	c6 04 30 00          	movb   $0x0,(%eax,%esi,1)
    return buf;
}
 1e8:	8d 65 f4             	lea    -0xc(%ebp),%esp
 1eb:	5b                   	pop    %ebx
 1ec:	5e                   	pop    %esi
 1ed:	5f                   	pop    %edi
 1ee:	5d                   	pop    %ebp
 1ef:	c3                   	ret    
    buf[i] = '\0';
 1f0:	8b 45 08             	mov    0x8(%ebp),%eax
 1f3:	89 de                	mov    %ebx,%esi
 1f5:	c6 04 30 00          	movb   $0x0,(%eax,%esi,1)
}
 1f9:	8d 65 f4             	lea    -0xc(%ebp),%esp
 1fc:	5b                   	pop    %ebx
 1fd:	5e                   	pop    %esi
 1fe:	5f                   	pop    %edi
 1ff:	5d                   	pop    %ebp
 200:	c3                   	ret    
 201:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 208:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 20f:	90                   	nop

00000210 <stat>:

int stat(const char *n, struct stat *st) {
 210:	55                   	push   %ebp
 211:	89 e5                	mov    %esp,%ebp
 213:	56                   	push   %esi
 214:	53                   	push   %ebx
    int fd;
    int r;

    fd = open(n, O_RDONLY);
 215:	83 ec 08             	sub    $0x8,%esp
 218:	6a 00                	push   $0x0
 21a:	ff 75 08             	push   0x8(%ebp)
 21d:	e8 19 01 00 00       	call   33b <open>
    if (fd < 0) {
 222:	83 c4 10             	add    $0x10,%esp
 225:	85 c0                	test   %eax,%eax
 227:	78 27                	js     250 <stat+0x40>
        return -1;
    }
    r = fstat(fd, st);
 229:	83 ec 08             	sub    $0x8,%esp
 22c:	ff 75 0c             	push   0xc(%ebp)
 22f:	89 c3                	mov    %eax,%ebx
 231:	50                   	push   %eax
 232:	e8 cc 00 00 00       	call   303 <fstat>
    close(fd);
 237:	89 1c 24             	mov    %ebx,(%esp)
    r = fstat(fd, st);
 23a:	89 c6                	mov    %eax,%esi
    close(fd);
 23c:	e8 2a 01 00 00       	call   36b <close>
    return r;
 241:	83 c4 10             	add    $0x10,%esp
}
 244:	8d 65 f8             	lea    -0x8(%ebp),%esp
 247:	89 f0                	mov    %esi,%eax
 249:	5b                   	pop    %ebx
 24a:	5e                   	pop    %esi
 24b:	5d                   	pop    %ebp
 24c:	c3                   	ret    
 24d:	8d 76 00             	lea    0x0(%esi),%esi
        return -1;
 250:	be ff ff ff ff       	mov    $0xffffffff,%esi
 255:	eb ed                	jmp    244 <stat+0x34>
 257:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 25e:	66 90                	xchg   %ax,%ax

00000260 <atoi>:

int atoi(const char *s) {
 260:	55                   	push   %ebp
 261:	89 e5                	mov    %esp,%ebp
 263:	53                   	push   %ebx
 264:	8b 55 08             	mov    0x8(%ebp),%edx
    int n;

    n = 0;
    while ('0' <= *s && *s <= '9') {
 267:	0f be 02             	movsbl (%edx),%eax
 26a:	8d 48 d0             	lea    -0x30(%eax),%ecx
 26d:	80 f9 09             	cmp    $0x9,%cl
    n = 0;
 270:	b9 00 00 00 00       	mov    $0x0,%ecx
    while ('0' <= *s && *s <= '9') {
 275:	77 1e                	ja     295 <atoi+0x35>
 277:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 27e:	66 90                	xchg   %ax,%ax
        n = n * 10 + *s++ - '0';
 280:	83 c2 01             	add    $0x1,%edx
 283:	8d 0c 89             	lea    (%ecx,%ecx,4),%ecx
 286:	8d 4c 48 d0          	lea    -0x30(%eax,%ecx,2),%ecx
    while ('0' <= *s && *s <= '9') {
 28a:	0f be 02             	movsbl (%edx),%eax
 28d:	8d 58 d0             	lea    -0x30(%eax),%ebx
 290:	80 fb 09             	cmp    $0x9,%bl
 293:	76 eb                	jbe    280 <atoi+0x20>
    }
    return n;
}
 295:	8b 5d fc             	mov    -0x4(%ebp),%ebx
 298:	89 c8                	mov    %ecx,%eax
 29a:	c9                   	leave  
 29b:	c3                   	ret    
 29c:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi

000002a0 <memmove>:

void* memmove(void *vdst, const void *vsrc, int n) {
 2a0:	55                   	push   %ebp
 2a1:	89 e5                	mov    %esp,%ebp
 2a3:	57                   	push   %edi
 2a4:	8b 45 10             	mov    0x10(%ebp),%eax
 2a7:	8b 55 08             	mov    0x8(%ebp),%edx
 2aa:	56                   	push   %esi
 2ab:	8b 75 0c             	mov    0xc(%ebp),%esi
    char *dst;
    const char *src;

    dst = vdst;
    src = vsrc;
    while (n-- > 0) {
 2ae:	85 c0                	test   %eax,%eax
 2b0:	7e 13                	jle    2c5 <memmove+0x25>
 2b2:	01 d0                	add    %edx,%eax
    dst = vdst;
 2b4:	89 d7                	mov    %edx,%edi
 2b6:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 2bd:	8d 76 00             	lea    0x0(%esi),%esi
        *dst++ = *src++;
 2c0:	a4                   	movsb  %ds:(%esi),%es:(%edi)
    while (n-- > 0) {
 2c1:	39 f8                	cmp    %edi,%eax
 2c3:	75 fb                	jne    2c0 <memmove+0x20>
    }
    return vdst;
}
 2c5:	5e                   	pop    %esi
 2c6:	89 d0                	mov    %edx,%eax
 2c8:	5f                   	pop    %edi
 2c9:	5d                   	pop    %ebp
 2ca:	c3                   	ret    

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

SYSCALL(fork)
 2cb:	b8 01 00 00 00       	mov    $0x1,%eax
 2d0:	cd 40                	int    $0x40
 2d2:	c3                   	ret    

000002d3 <exit>:
SYSCALL(exit)
 2d3:	b8 02 00 00 00       	mov    $0x2,%eax
 2d8:	cd 40                	int    $0x40
 2da:	c3                   	ret    

000002db <wait>:
SYSCALL(wait)
 2db:	b8 03 00 00 00       	mov    $0x3,%eax
 2e0:	cd 40                	int    $0x40
 2e2:	c3                   	ret    

000002e3 <pipe>:
SYSCALL(pipe)
 2e3:	b8 04 00 00 00       	mov    $0x4,%eax
 2e8:	cd 40                	int    $0x40
 2ea:	c3                   	ret    

000002eb <read>:
SYSCALL(read)
 2eb:	b8 05 00 00 00       	mov    $0x5,%eax
 2f0:	cd 40                	int    $0x40
 2f2:	c3                   	ret    

000002f3 <kill>:
SYSCALL(kill)
 2f3:	b8 06 00 00 00       	mov    $0x6,%eax
 2f8:	cd 40                	int    $0x40
 2fa:	c3                   	ret    

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

00000303 <fstat>:
SYSCALL(fstat)
 303:	b8 08 00 00 00       	mov    $0x8,%eax
 308:	cd 40                	int    $0x40
 30a:	c3                   	ret    

0000030b <chdir>:
SYSCALL(chdir)
 30b:	b8 09 00 00 00       	mov    $0x9,%eax
 310:	cd 40                	int    $0x40
 312:	c3                   	ret    

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

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

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

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

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

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

00000343 <write>:
SYSCALL(write)
 343:	b8 10 00 00 00       	mov    $0x10,%eax
 348:	cd 40                	int    $0x40
 34a:	c3                   	ret    

0000034b <mknod>:
SYSCALL(mknod)
 34b:	b8 11 00 00 00       	mov    $0x11,%eax
 350:	cd 40                	int    $0x40
 352:	c3                   	ret    

00000353 <unlink>:
SYSCALL(unlink)
 353:	b8 12 00 00 00       	mov    $0x12,%eax
 358:	cd 40                	int    $0x40
 35a:	c3                   	ret    

0000035b <link>:
SYSCALL(link)
 35b:	b8 13 00 00 00       	mov    $0x13,%eax
 360:	cd 40                	int    $0x40
 362:	c3                   	ret    

00000363 <mkdir>:
SYSCALL(mkdir)
 363:	b8 14 00 00 00       	mov    $0x14,%eax
 368:	cd 40                	int    $0x40
 36a:	c3                   	ret    

0000036b <close>:
SYSCALL(close)
 36b:	b8 15 00 00 00       	mov    $0x15,%eax
 370:	cd 40                	int    $0x40
 372:	c3                   	ret    

00000373 <getch>:
SYSCALL(getch)
 373:	b8 16 00 00 00       	mov    $0x16,%eax
 378:	cd 40                	int    $0x40
 37a:	c3                   	ret    

0000037b <greeting>:
SYSCALL(greeting)
 37b:	b8 17 00 00 00       	mov    $0x17,%eax
 380:	cd 40                	int    $0x40
 382:	c3                   	ret    

00000383 <shutdown>:
SYSCALL(shutdown)
 383:	b8 18 00 00 00       	mov    $0x18,%eax
 388:	cd 40                	int    $0x40
 38a:	c3                   	ret    

0000038b <screen>:
SYSCALL(screen)
 38b:	b8 19 00 00 00       	mov    $0x19,%eax
 390:	cd 40                	int    $0x40
 392:	c3                   	ret    

00000393 <cls>:
SYSCALL(cls)
 393:	b8 1a 00 00 00       	mov    $0x1a,%eax
 398:	cd 40                	int    $0x40
 39a:	c3                   	ret    
 39b:	66 90                	xchg   %ax,%ax
 39d:	66 90                	xchg   %ax,%ax
 39f:	90                   	nop

000003a0 <printint>:

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

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

    neg = 0;
    if (sgn && xx < 0) {
        neg = 1;
        x = -xx;
 3ac:	89 d1                	mov    %edx,%ecx
static void printint(int fd, int xx, int base, int sgn) {
 3ae:	89 45 b8             	mov    %eax,-0x48(%ebp)
    if (sgn && xx < 0) {
 3b1:	85 d2                	test   %edx,%edx
 3b3:	0f 89 7f 00 00 00    	jns    438 <printint+0x98>
 3b9:	f6 45 08 01          	testb  $0x1,0x8(%ebp)
 3bd:	74 79                	je     438 <printint+0x98>
        neg = 1;
 3bf:	c7 45 bc 01 00 00 00 	movl   $0x1,-0x44(%ebp)
        x = -xx;
 3c6:	f7 d9                	neg    %ecx
    }
    else {
        x = xx;
    }

    i = 0;
 3c8:	31 db                	xor    %ebx,%ebx
 3ca:	8d 75 d7             	lea    -0x29(%ebp),%esi
 3cd:	8d 76 00             	lea    0x0(%esi),%esi
    do {
        buf[i++] = digits[x % base];
 3d0:	89 c8                	mov    %ecx,%eax
 3d2:	31 d2                	xor    %edx,%edx
 3d4:	89 cf                	mov    %ecx,%edi
 3d6:	f7 75 c4             	divl   -0x3c(%ebp)
 3d9:	0f b6 92 0c 08 00 00 	movzbl 0x80c(%edx),%edx
 3e0:	89 45 c0             	mov    %eax,-0x40(%ebp)
 3e3:	89 d8                	mov    %ebx,%eax
 3e5:	8d 5b 01             	lea    0x1(%ebx),%ebx
    }
    while ((x /= base) != 0);
 3e8:	8b 4d c0             	mov    -0x40(%ebp),%ecx
        buf[i++] = digits[x % base];
 3eb:	88 14 1e             	mov    %dl,(%esi,%ebx,1)
    while ((x /= base) != 0);
 3ee:	39 7d c4             	cmp    %edi,-0x3c(%ebp)
 3f1:	76 dd                	jbe    3d0 <printint+0x30>
    if (neg) {
 3f3:	8b 4d bc             	mov    -0x44(%ebp),%ecx
 3f6:	85 c9                	test   %ecx,%ecx
 3f8:	74 0c                	je     406 <printint+0x66>
        buf[i++] = '-';
 3fa:	c6 44 1d d8 2d       	movb   $0x2d,-0x28(%ebp,%ebx,1)
        buf[i++] = digits[x % base];
 3ff:	89 d8                	mov    %ebx,%eax
        buf[i++] = '-';
 401:	ba 2d 00 00 00       	mov    $0x2d,%edx
    }

    while (--i >= 0) {
 406:	8b 7d b8             	mov    -0x48(%ebp),%edi
 409:	8d 5c 05 d7          	lea    -0x29(%ebp,%eax,1),%ebx
 40d:	eb 07                	jmp    416 <printint+0x76>
 40f:	90                   	nop
        putc(fd, buf[i]);
 410:	0f b6 13             	movzbl (%ebx),%edx
 413:	83 eb 01             	sub    $0x1,%ebx
    write(fd, &c, 1);
 416:	83 ec 04             	sub    $0x4,%esp
 419:	88 55 d7             	mov    %dl,-0x29(%ebp)
 41c:	6a 01                	push   $0x1
 41e:	56                   	push   %esi
 41f:	57                   	push   %edi
 420:	e8 1e ff ff ff       	call   343 <write>
    while (--i >= 0) {
 425:	83 c4 10             	add    $0x10,%esp
 428:	39 de                	cmp    %ebx,%esi
 42a:	75 e4                	jne    410 <printint+0x70>
    }
}
 42c:	8d 65 f4             	lea    -0xc(%ebp),%esp
 42f:	5b                   	pop    %ebx
 430:	5e                   	pop    %esi
 431:	5f                   	pop    %edi
 432:	5d                   	pop    %ebp
 433:	c3                   	ret    
 434:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
    neg = 0;
 438:	c7 45 bc 00 00 00 00 	movl   $0x0,-0x44(%ebp)
 43f:	eb 87                	jmp    3c8 <printint+0x28>
 441:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 448:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 44f:	90                   	nop

00000450 <printf>:

// Print to the given fd. Only understands %d, %x, %p, %s.
void printf(int fd, const char *fmt, ...) {
 450:	55                   	push   %ebp
 451:	89 e5                	mov    %esp,%ebp
 453:	57                   	push   %edi
 454:	56                   	push   %esi
 455:	53                   	push   %ebx
 456:	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++) {
 459:	8b 5d 0c             	mov    0xc(%ebp),%ebx
void printf(int fd, const char *fmt, ...) {
 45c:	8b 75 08             	mov    0x8(%ebp),%esi
    for (i = 0; fmt[i]; i++) {
 45f:	0f b6 13             	movzbl (%ebx),%edx
 462:	84 d2                	test   %dl,%dl
 464:	74 6a                	je     4d0 <printf+0x80>
    ap = (uint*)(void*)&fmt + 1;
 466:	8d 45 10             	lea    0x10(%ebp),%eax
 469:	83 c3 01             	add    $0x1,%ebx
    write(fd, &c, 1);
 46c:	8d 7d e7             	lea    -0x19(%ebp),%edi
    state = 0;
 46f:	31 c9                	xor    %ecx,%ecx
    ap = (uint*)(void*)&fmt + 1;
 471:	89 45 d0             	mov    %eax,-0x30(%ebp)
 474:	eb 36                	jmp    4ac <printf+0x5c>
 476:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 47d:	8d 76 00             	lea    0x0(%esi),%esi
 480:	89 4d d4             	mov    %ecx,-0x2c(%ebp)
        c = fmt[i] & 0xff;
        if (state == 0) {
            if (c == '%') {
                state = '%';
 483:	b9 25 00 00 00       	mov    $0x25,%ecx
            if (c == '%') {
 488:	83 f8 25             	cmp    $0x25,%eax
 48b:	74 15                	je     4a2 <printf+0x52>
    write(fd, &c, 1);
 48d:	83 ec 04             	sub    $0x4,%esp
 490:	88 55 e7             	mov    %dl,-0x19(%ebp)
 493:	6a 01                	push   $0x1
 495:	57                   	push   %edi
 496:	56                   	push   %esi
 497:	e8 a7 fe ff ff       	call   343 <write>
 49c:	8b 4d d4             	mov    -0x2c(%ebp),%ecx
            }
            else {
                putc(fd, c);
 49f:	83 c4 10             	add    $0x10,%esp
    for (i = 0; fmt[i]; i++) {
 4a2:	0f b6 13             	movzbl (%ebx),%edx
 4a5:	83 c3 01             	add    $0x1,%ebx
 4a8:	84 d2                	test   %dl,%dl
 4aa:	74 24                	je     4d0 <printf+0x80>
        c = fmt[i] & 0xff;
 4ac:	0f b6 c2             	movzbl %dl,%eax
        if (state == 0) {
 4af:	85 c9                	test   %ecx,%ecx
 4b1:	74 cd                	je     480 <printf+0x30>
            }
        }
        else if (state == '%') {
 4b3:	83 f9 25             	cmp    $0x25,%ecx
 4b6:	75 ea                	jne    4a2 <printf+0x52>
            if (c == 'd') {
 4b8:	83 f8 25             	cmp    $0x25,%eax
 4bb:	0f 84 07 01 00 00    	je     5c8 <printf+0x178>
 4c1:	83 e8 63             	sub    $0x63,%eax
 4c4:	83 f8 15             	cmp    $0x15,%eax
 4c7:	77 17                	ja     4e0 <printf+0x90>
 4c9:	ff 24 85 b4 07 00 00 	jmp    *0x7b4(,%eax,4)
                putc(fd, c);
            }
            state = 0;
        }
    }
}
 4d0:	8d 65 f4             	lea    -0xc(%ebp),%esp
 4d3:	5b                   	pop    %ebx
 4d4:	5e                   	pop    %esi
 4d5:	5f                   	pop    %edi
 4d6:	5d                   	pop    %ebp
 4d7:	c3                   	ret    
 4d8:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 4df:	90                   	nop
    write(fd, &c, 1);
 4e0:	83 ec 04             	sub    $0x4,%esp
 4e3:	88 55 d4             	mov    %dl,-0x2c(%ebp)
 4e6:	6a 01                	push   $0x1
 4e8:	57                   	push   %edi
 4e9:	56                   	push   %esi
 4ea:	c6 45 e7 25          	movb   $0x25,-0x19(%ebp)
 4ee:	e8 50 fe ff ff       	call   343 <write>
                putc(fd, c);
 4f3:	0f b6 55 d4          	movzbl -0x2c(%ebp),%edx
    write(fd, &c, 1);
 4f7:	83 c4 0c             	add    $0xc,%esp
 4fa:	88 55 e7             	mov    %dl,-0x19(%ebp)
 4fd:	6a 01                	push   $0x1
 4ff:	57                   	push   %edi
 500:	56                   	push   %esi
 501:	e8 3d fe ff ff       	call   343 <write>
                putc(fd, c);
 506:	83 c4 10             	add    $0x10,%esp
            state = 0;
 509:	31 c9                	xor    %ecx,%ecx
 50b:	eb 95                	jmp    4a2 <printf+0x52>
 50d:	8d 76 00             	lea    0x0(%esi),%esi
                printint(fd, *ap, 16, 0);
 510:	83 ec 0c             	sub    $0xc,%esp
 513:	b9 10 00 00 00       	mov    $0x10,%ecx
 518:	6a 00                	push   $0x0
 51a:	8b 45 d0             	mov    -0x30(%ebp),%eax
 51d:	8b 10                	mov    (%eax),%edx
 51f:	89 f0                	mov    %esi,%eax
 521:	e8 7a fe ff ff       	call   3a0 <printint>
                ap++;
 526:	83 45 d0 04          	addl   $0x4,-0x30(%ebp)
 52a:	83 c4 10             	add    $0x10,%esp
            state = 0;
 52d:	31 c9                	xor    %ecx,%ecx
 52f:	e9 6e ff ff ff       	jmp    4a2 <printf+0x52>
 534:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
                s = (char*)*ap;
 538:	8b 45 d0             	mov    -0x30(%ebp),%eax
 53b:	8b 10                	mov    (%eax),%edx
                ap++;
 53d:	83 c0 04             	add    $0x4,%eax
 540:	89 45 d0             	mov    %eax,-0x30(%ebp)
                if (s == 0) {
 543:	85 d2                	test   %edx,%edx
 545:	0f 84 8d 00 00 00    	je     5d8 <printf+0x188>
                while (*s != 0) {
 54b:	0f b6 02             	movzbl (%edx),%eax
            state = 0;
 54e:	31 c9                	xor    %ecx,%ecx
                while (*s != 0) {
 550:	84 c0                	test   %al,%al
 552:	0f 84 4a ff ff ff    	je     4a2 <printf+0x52>
 558:	89 5d d4             	mov    %ebx,-0x2c(%ebp)
 55b:	89 d3                	mov    %edx,%ebx
 55d:	8d 76 00             	lea    0x0(%esi),%esi
    write(fd, &c, 1);
 560:	83 ec 04             	sub    $0x4,%esp
                    s++;
 563:	83 c3 01             	add    $0x1,%ebx
 566:	88 45 e7             	mov    %al,-0x19(%ebp)
    write(fd, &c, 1);
 569:	6a 01                	push   $0x1
 56b:	57                   	push   %edi
 56c:	56                   	push   %esi
 56d:	e8 d1 fd ff ff       	call   343 <write>
                while (*s != 0) {
 572:	0f b6 03             	movzbl (%ebx),%eax
 575:	83 c4 10             	add    $0x10,%esp
 578:	84 c0                	test   %al,%al
 57a:	75 e4                	jne    560 <printf+0x110>
            state = 0;
 57c:	8b 5d d4             	mov    -0x2c(%ebp),%ebx
 57f:	31 c9                	xor    %ecx,%ecx
 581:	e9 1c ff ff ff       	jmp    4a2 <printf+0x52>
 586:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 58d:	8d 76 00             	lea    0x0(%esi),%esi
                printint(fd, *ap, 10, 1);
 590:	83 ec 0c             	sub    $0xc,%esp
 593:	b9 0a 00 00 00       	mov    $0xa,%ecx
 598:	6a 01                	push   $0x1
 59a:	e9 7b ff ff ff       	jmp    51a <printf+0xca>
 59f:	90                   	nop
                putc(fd, *ap);
 5a0:	8b 45 d0             	mov    -0x30(%ebp),%eax
    write(fd, &c, 1);
 5a3:	83 ec 04             	sub    $0x4,%esp
                putc(fd, *ap);
 5a6:	8b 00                	mov    (%eax),%eax
    write(fd, &c, 1);
 5a8:	6a 01                	push   $0x1
 5aa:	57                   	push   %edi
 5ab:	56                   	push   %esi
                putc(fd, *ap);
 5ac:	88 45 e7             	mov    %al,-0x19(%ebp)
    write(fd, &c, 1);
 5af:	e8 8f fd ff ff       	call   343 <write>
                ap++;
 5b4:	83 45 d0 04          	addl   $0x4,-0x30(%ebp)
 5b8:	83 c4 10             	add    $0x10,%esp
            state = 0;
 5bb:	31 c9                	xor    %ecx,%ecx
 5bd:	e9 e0 fe ff ff       	jmp    4a2 <printf+0x52>
 5c2:	8d b6 00 00 00 00    	lea    0x0(%esi),%esi
                putc(fd, c);
 5c8:	88 55 e7             	mov    %dl,-0x19(%ebp)
    write(fd, &c, 1);
 5cb:	83 ec 04             	sub    $0x4,%esp
 5ce:	e9 2a ff ff ff       	jmp    4fd <printf+0xad>
 5d3:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
 5d7:	90                   	nop
                    s = "(null)";
 5d8:	ba ab 07 00 00       	mov    $0x7ab,%edx
                while (*s != 0) {
 5dd:	89 5d d4             	mov    %ebx,-0x2c(%ebp)
 5e0:	b8 28 00 00 00       	mov    $0x28,%eax
 5e5:	89 d3                	mov    %edx,%ebx
 5e7:	e9 74 ff ff ff       	jmp    560 <printf+0x110>
 5ec:	66 90                	xchg   %ax,%ax
 5ee:	66 90                	xchg   %ax,%ax

000005f0 <free>:
typedef union header Header;

static Header base;
static Header *freep;

void free(void *ap) {
 5f0:	55                   	push   %ebp
    Header *bp, *p;

    bp = (Header*)ap - 1;
    for (p = freep; !(bp > p && bp < p->s.ptr); p = p->s.ptr) {
 5f1:	a1 c4 0a 00 00       	mov    0xac4,%eax
void free(void *ap) {
 5f6:	89 e5                	mov    %esp,%ebp
 5f8:	57                   	push   %edi
 5f9:	56                   	push   %esi
 5fa:	53                   	push   %ebx
 5fb:	8b 5d 08             	mov    0x8(%ebp),%ebx
    bp = (Header*)ap - 1;
 5fe:	8d 4b f8             	lea    -0x8(%ebx),%ecx
    for (p = freep; !(bp > p && bp < p->s.ptr); p = p->s.ptr) {
 601:	8d b4 26 00 00 00 00 	lea    0x0(%esi,%eiz,1),%esi
 608:	89 c2                	mov    %eax,%edx
 60a:	8b 00                	mov    (%eax),%eax
 60c:	39 ca                	cmp    %ecx,%edx
 60e:	73 30                	jae    640 <free+0x50>
 610:	39 c1                	cmp    %eax,%ecx
 612:	72 04                	jb     618 <free+0x28>
        if (p >= p->s.ptr && (bp > p || bp < p->s.ptr)) {
 614:	39 c2                	cmp    %eax,%edx
 616:	72 f0                	jb     608 <free+0x18>
            break;
        }
    }
    if (bp + bp->s.size == p->s.ptr) {
 618:	8b 73 fc             	mov    -0x4(%ebx),%esi
 61b:	8d 3c f1             	lea    (%ecx,%esi,8),%edi
 61e:	39 f8                	cmp    %edi,%eax
 620:	74 30                	je     652 <free+0x62>
        bp->s.size += p->s.ptr->s.size;
        bp->s.ptr = p->s.ptr->s.ptr;
 622:	89 43 f8             	mov    %eax,-0x8(%ebx)
    }
    else {
        bp->s.ptr = p->s.ptr;
    }
    if (p + p->s.size == bp) {
 625:	8b 42 04             	mov    0x4(%edx),%eax
 628:	8d 34 c2             	lea    (%edx,%eax,8),%esi
 62b:	39 f1                	cmp    %esi,%ecx
 62d:	74 3a                	je     669 <free+0x79>
        p->s.size += bp->s.size;
        p->s.ptr = bp->s.ptr;
 62f:	89 0a                	mov    %ecx,(%edx)
    }
    else {
        p->s.ptr = bp;
    }
    freep = p;
}
 631:	5b                   	pop    %ebx
    freep = p;
 632:	89 15 c4 0a 00 00    	mov    %edx,0xac4
}
 638:	5e                   	pop    %esi
 639:	5f                   	pop    %edi
 63a:	5d                   	pop    %ebp
 63b:	c3                   	ret    
 63c:	8d 74 26 00          	lea    0x0(%esi,%eiz,1),%esi
        if (p >= p->s.ptr && (bp > p || bp < p->s.ptr)) {
 640:	39 c2                	cmp    %eax,%edx
 642:	72 c4                	jb     608 <free+0x18>
 644:	39 c1                	cmp    %eax,%ecx
 646:	73 c0                	jae    608 <free+0x18>
    if (bp + bp->s.size == p->s.ptr) {
 648:	8b 73 fc             	mov    -0x4(%ebx),%esi
 64b:	8d 3c f1             	lea    (%ecx,%esi,8),%edi
 64e:	39 f8                	cmp    %edi,%eax
 650:	75 d0                	jne    622 <free+0x32>
        bp->s.size += p->s.ptr->s.size;
 652:	03 70 04             	add    0x4(%eax),%esi
 655:	89 73 fc             	mov    %esi,-0x4(%ebx)
        bp->s.ptr = p->s.ptr->s.ptr;
 658:	8b 02                	mov    (%edx),%eax
 65a:	8b 00                	mov    (%eax),%eax
 65c:	89 43 f8             	mov    %eax,-0x8(%ebx)
    if (p + p->s.size == bp) {
 65f:	8b 42 04             	mov    0x4(%edx),%eax
 662:	8d 34 c2             	lea    (%edx,%eax,8),%esi
 665:	39 f1                	cmp    %esi,%ecx
 667:	75 c6                	jne    62f <free+0x3f>
        p->s.size += bp->s.size;
 669:	03 43 fc             	add    -0x4(%ebx),%eax
    freep = p;
 66c:	89 15 c4 0a 00 00    	mov    %edx,0xac4
        p->s.size += bp->s.size;
 672:	89 42 04             	mov    %eax,0x4(%edx)
        p->s.ptr = bp->s.ptr;
 675:	8b 4b f8             	mov    -0x8(%ebx),%ecx
 678:	89 0a                	mov    %ecx,(%edx)
}
 67a:	5b                   	pop    %ebx
 67b:	5e                   	pop    %esi
 67c:	5f                   	pop    %edi
 67d:	5d                   	pop    %ebp
 67e:	c3                   	ret    
 67f:	90                   	nop

00000680 <malloc>:
    hp->s.size = nu;
    free((void*)(hp + 1));
    return freep;
}

void* malloc(uint nbytes) {
 680:	55                   	push   %ebp
 681:	89 e5                	mov    %esp,%ebp
 683:	57                   	push   %edi
 684:	56                   	push   %esi
 685:	53                   	push   %ebx
 686:	83 ec 1c             	sub    $0x1c,%esp
    Header *p, *prevp;
    uint nunits;

    nunits = (nbytes + sizeof(Header) - 1) / sizeof(Header) + 1;
 689:	8b 45 08             	mov    0x8(%ebp),%eax
    if ((prevp = freep) == 0) {
 68c:	8b 3d c4 0a 00 00    	mov    0xac4,%edi
    nunits = (nbytes + sizeof(Header) - 1) / sizeof(Header) + 1;
 692:	8d 70 07             	lea    0x7(%eax),%esi
 695:	c1 ee 03             	shr    $0x3,%esi
 698:	83 c6 01             	add    $0x1,%esi
    if ((prevp = freep) == 0) {
 69b:	85 ff                	test   %edi,%edi
 69d:	0f 84 9d 00 00 00    	je     740 <malloc+0xc0>
        base.s.ptr = freep = prevp = &base;
        base.s.size = 0;
    }
    for (p = prevp->s.ptr;; prevp = p, p = p->s.ptr) {
 6a3:	8b 17                	mov    (%edi),%edx
        if (p->s.size >= nunits) {
 6a5:	8b 4a 04             	mov    0x4(%edx),%ecx
 6a8:	39 f1                	cmp    %esi,%ecx
 6aa:	73 6a                	jae    716 <malloc+0x96>
 6ac:	bb 00 10 00 00       	mov    $0x1000,%ebx
 6b1:	39 de                	cmp    %ebx,%esi
 6b3:	0f 43 de             	cmovae %esi,%ebx
    p = sbrk(nu * sizeof(Header));
 6b6:	8d 04 dd 00 00 00 00 	lea    0x0(,%ebx,8),%eax
 6bd:	89 45 e4             	mov    %eax,-0x1c(%ebp)
 6c0:	eb 17                	jmp    6d9 <malloc+0x59>
 6c2:	8d b6 00 00 00 00    	lea    0x0(%esi),%esi
    for (p = prevp->s.ptr;; prevp = p, p = p->s.ptr) {
 6c8:	8b 02                	mov    (%edx),%eax
        if (p->s.size >= nunits) {
 6ca:	8b 48 04             	mov    0x4(%eax),%ecx
 6cd:	39 f1                	cmp    %esi,%ecx
 6cf:	73 4f                	jae    720 <malloc+0xa0>
                p->s.size = nunits;
            }
            freep = prevp;
            return (void*)(p + 1);
        }
        if (p == freep) {
 6d1:	8b 3d c4 0a 00 00    	mov    0xac4,%edi
 6d7:	89 c2                	mov    %eax,%edx
 6d9:	39 d7                	cmp    %edx,%edi
 6db:	75 eb                	jne    6c8 <malloc+0x48>
    p = sbrk(nu * sizeof(Header));
 6dd:	83 ec 0c             	sub    $0xc,%esp
 6e0:	ff 75 e4             	push   -0x1c(%ebp)
 6e3:	e8 3b fc ff ff       	call   323 <sbrk>
    if (p == (char*)-1) {
 6e8:	83 c4 10             	add    $0x10,%esp
 6eb:	83 f8 ff             	cmp    $0xffffffff,%eax
 6ee:	74 1c                	je     70c <malloc+0x8c>
    hp->s.size = nu;
 6f0:	89 58 04             	mov    %ebx,0x4(%eax)
    free((void*)(hp + 1));
 6f3:	83 ec 0c             	sub    $0xc,%esp
 6f6:	83 c0 08             	add    $0x8,%eax
 6f9:	50                   	push   %eax
 6fa:	e8 f1 fe ff ff       	call   5f0 <free>
    return freep;
 6ff:	8b 15 c4 0a 00 00    	mov    0xac4,%edx
            if ((p = morecore(nunits)) == 0) {
 705:	83 c4 10             	add    $0x10,%esp
 708:	85 d2                	test   %edx,%edx
 70a:	75 bc                	jne    6c8 <malloc+0x48>
                return 0;
            }
        }
    }
}
 70c:	8d 65 f4             	lea    -0xc(%ebp),%esp
                return 0;
 70f:	31 c0                	xor    %eax,%eax
}
 711:	5b                   	pop    %ebx
 712:	5e                   	pop    %esi
 713:	5f                   	pop    %edi
 714:	5d                   	pop    %ebp
 715:	c3                   	ret    
        if (p->s.size >= nunits) {
 716:	89 d0                	mov    %edx,%eax
 718:	89 fa                	mov    %edi,%edx
 71a:	8d b6 00 00 00 00    	lea    0x0(%esi),%esi
            if (p->s.size == nunits) {
 720:	39 ce                	cmp    %ecx,%esi
 722:	74 4c                	je     770 <malloc+0xf0>
                p->s.size -= nunits;
 724:	29 f1                	sub    %esi,%ecx
 726:	89 48 04             	mov    %ecx,0x4(%eax)
                p += p->s.size;
 729:	8d 04 c8             	lea    (%eax,%ecx,8),%eax
                p->s.size = nunits;
 72c:	89 70 04             	mov    %esi,0x4(%eax)
            freep = prevp;
 72f:	89 15 c4 0a 00 00    	mov    %edx,0xac4
}
 735:	8d 65 f4             	lea    -0xc(%ebp),%esp
            return (void*)(p + 1);
 738:	83 c0 08             	add    $0x8,%eax
}
 73b:	5b                   	pop    %ebx
 73c:	5e                   	pop    %esi
 73d:	5f                   	pop    %edi
 73e:	5d                   	pop    %ebp
 73f:	c3                   	ret    
        base.s.ptr = freep = prevp = &base;
 740:	c7 05 c4 0a 00 00 c8 	movl   $0xac8,0xac4
 747:	0a 00 00 
        base.s.size = 0;
 74a:	bf c8 0a 00 00       	mov    $0xac8,%edi
        base.s.ptr = freep = prevp = &base;
 74f:	c7 05 c8 0a 00 00 c8 	movl   $0xac8,0xac8
 756:	0a 00 00 
    for (p = prevp->s.ptr;; prevp = p, p = p->s.ptr) {
 759:	89 fa                	mov    %edi,%edx
        base.s.size = 0;
 75b:	c7 05 cc 0a 00 00 00 	movl   $0x0,0xacc
 762:	00 00 00 
        if (p->s.size >= nunits) {
 765:	e9 42 ff ff ff       	jmp    6ac <malloc+0x2c>
 76a:	8d b6 00 00 00 00    	lea    0x0(%esi),%esi
                prevp->s.ptr = p->s.ptr;
 770:	8b 08                	mov    (%eax),%ecx
 772:	89 0a                	mov    %ecx,(%edx)
 774:	eb b9                	jmp    72f <malloc+0xaf>
