1175 lines
40 KiB
NASM
1175 lines
40 KiB
NASM
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_argtest: file format elf32-i386
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Disassembly of section .text:
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00000000 <main>:
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#include "types.h"
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#include "user.h"
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int main(int argc, char *argv[]) {
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0: 8d 4c 24 04 lea 0x4(%esp),%ecx
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4: 83 e4 f0 and $0xfffffff0,%esp
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7: ff 71 fc push -0x4(%ecx)
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a: 55 push %ebp
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b: 89 e5 mov %esp,%ebp
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d: 57 push %edi
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e: 56 push %esi
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f: 53 push %ebx
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10: 51 push %ecx
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11: 83 ec 08 sub $0x8,%esp
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14: 8b 31 mov (%ecx),%esi
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16: 8b 79 04 mov 0x4(%ecx),%edi
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for (int i = 1; i < argc; i++) {
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19: 83 fe 01 cmp $0x1,%esi
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1c: 7e 24 jle 42 <main+0x42>
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1e: bb 01 00 00 00 mov $0x1,%ebx
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23: 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi
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27: 90 nop
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printf(1, "Arg %d: %s\n", i, argv[i]);
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28: ff 34 9f push (%edi,%ebx,4)
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2b: 53 push %ebx
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for (int i = 1; i < argc; i++) {
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2c: 83 c3 01 add $0x1,%ebx
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printf(1, "Arg %d: %s\n", i, argv[i]);
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2f: 68 48 07 00 00 push $0x748
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34: 6a 01 push $0x1
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36: e8 e5 03 00 00 call 420 <printf>
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for (int i = 1; i < argc; i++) {
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3b: 83 c4 10 add $0x10,%esp
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3e: 39 de cmp %ebx,%esi
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40: 75 e6 jne 28 <main+0x28>
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}
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exit();
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42: e8 5c 02 00 00 call 2a3 <exit>
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47: 66 90 xchg %ax,%ax
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49: 66 90 xchg %ax,%ax
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4b: 66 90 xchg %ax,%ax
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4d: 66 90 xchg %ax,%ax
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4f: 90 nop
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00000050 <strcpy>:
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#include "stat.h"
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#include "fcntl.h"
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#include "user.h"
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#include "x86.h"
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char*strcpy(char *s, const char *t) {
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50: 55 push %ebp
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char *os;
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os = s;
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while ((*s++ = *t++) != 0) {
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51: 31 c0 xor %eax,%eax
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char*strcpy(char *s, const char *t) {
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53: 89 e5 mov %esp,%ebp
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55: 53 push %ebx
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56: 8b 4d 08 mov 0x8(%ebp),%ecx
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59: 8b 5d 0c mov 0xc(%ebp),%ebx
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5c: 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi
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while ((*s++ = *t++) != 0) {
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60: 0f b6 14 03 movzbl (%ebx,%eax,1),%edx
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64: 88 14 01 mov %dl,(%ecx,%eax,1)
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67: 83 c0 01 add $0x1,%eax
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6a: 84 d2 test %dl,%dl
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6c: 75 f2 jne 60 <strcpy+0x10>
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;
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}
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return os;
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}
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6e: 8b 5d fc mov -0x4(%ebp),%ebx
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71: 89 c8 mov %ecx,%eax
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73: c9 leave
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74: c3 ret
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75: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi
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7c: 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi
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00000080 <strcmp>:
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int strcmp(const char *p, const char *q) {
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80: 55 push %ebp
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81: 89 e5 mov %esp,%ebp
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83: 53 push %ebx
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84: 8b 55 08 mov 0x8(%ebp),%edx
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87: 8b 4d 0c mov 0xc(%ebp),%ecx
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while (*p && *p == *q) {
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8a: 0f b6 02 movzbl (%edx),%eax
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8d: 84 c0 test %al,%al
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8f: 75 17 jne a8 <strcmp+0x28>
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91: eb 3a jmp cd <strcmp+0x4d>
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93: 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi
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97: 90 nop
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98: 0f b6 42 01 movzbl 0x1(%edx),%eax
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p++, q++;
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9c: 83 c2 01 add $0x1,%edx
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9f: 8d 59 01 lea 0x1(%ecx),%ebx
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while (*p && *p == *q) {
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a2: 84 c0 test %al,%al
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a4: 74 1a je c0 <strcmp+0x40>
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p++, q++;
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a6: 89 d9 mov %ebx,%ecx
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while (*p && *p == *q) {
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a8: 0f b6 19 movzbl (%ecx),%ebx
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ab: 38 c3 cmp %al,%bl
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ad: 74 e9 je 98 <strcmp+0x18>
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}
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return (uchar) * p - (uchar) * q;
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af: 29 d8 sub %ebx,%eax
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}
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b1: 8b 5d fc mov -0x4(%ebp),%ebx
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b4: c9 leave
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b5: c3 ret
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b6: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi
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bd: 8d 76 00 lea 0x0(%esi),%esi
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return (uchar) * p - (uchar) * q;
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c0: 0f b6 59 01 movzbl 0x1(%ecx),%ebx
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c4: 31 c0 xor %eax,%eax
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c6: 29 d8 sub %ebx,%eax
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}
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c8: 8b 5d fc mov -0x4(%ebp),%ebx
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cb: c9 leave
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cc: c3 ret
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return (uchar) * p - (uchar) * q;
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cd: 0f b6 19 movzbl (%ecx),%ebx
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d0: 31 c0 xor %eax,%eax
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d2: eb db jmp af <strcmp+0x2f>
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d4: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi
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db: 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi
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df: 90 nop
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000000e0 <strlen>:
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uint strlen(const char *s) {
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e0: 55 push %ebp
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e1: 89 e5 mov %esp,%ebp
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e3: 8b 55 08 mov 0x8(%ebp),%edx
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int n;
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for (n = 0; s[n]; n++) {
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e6: 80 3a 00 cmpb $0x0,(%edx)
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e9: 74 15 je 100 <strlen+0x20>
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eb: 31 c0 xor %eax,%eax
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ed: 8d 76 00 lea 0x0(%esi),%esi
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f0: 83 c0 01 add $0x1,%eax
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f3: 80 3c 02 00 cmpb $0x0,(%edx,%eax,1)
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f7: 89 c1 mov %eax,%ecx
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f9: 75 f5 jne f0 <strlen+0x10>
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;
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}
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return n;
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}
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fb: 89 c8 mov %ecx,%eax
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fd: 5d pop %ebp
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fe: c3 ret
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ff: 90 nop
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for (n = 0; s[n]; n++) {
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100: 31 c9 xor %ecx,%ecx
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}
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102: 5d pop %ebp
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103: 89 c8 mov %ecx,%eax
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105: c3 ret
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106: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi
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10d: 8d 76 00 lea 0x0(%esi),%esi
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00000110 <memset>:
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void* memset(void *dst, int c, uint n) {
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110: 55 push %ebp
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111: 89 e5 mov %esp,%ebp
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113: 57 push %edi
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114: 8b 55 08 mov 0x8(%ebp),%edx
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"d" (port), "0" (addr), "1" (cnt) :
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"cc");
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}
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static inline void stosb(void *addr, int data, int cnt) {
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asm volatile ("cld; rep stosb" :
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117: 8b 4d 10 mov 0x10(%ebp),%ecx
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11a: 8b 45 0c mov 0xc(%ebp),%eax
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11d: 89 d7 mov %edx,%edi
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11f: fc cld
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120: f3 aa rep stos %al,%es:(%edi)
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stosb(dst, c, n);
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return dst;
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}
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122: 8b 7d fc mov -0x4(%ebp),%edi
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125: 89 d0 mov %edx,%eax
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127: c9 leave
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128: c3 ret
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129: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi
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00000130 <strchr>:
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char* strchr(const char *s, char c) {
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130: 55 push %ebp
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131: 89 e5 mov %esp,%ebp
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133: 8b 45 08 mov 0x8(%ebp),%eax
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136: 0f b6 4d 0c movzbl 0xc(%ebp),%ecx
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for (; *s; s++) {
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13a: 0f b6 10 movzbl (%eax),%edx
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13d: 84 d2 test %dl,%dl
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13f: 75 12 jne 153 <strchr+0x23>
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141: eb 1d jmp 160 <strchr+0x30>
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143: 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi
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147: 90 nop
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148: 0f b6 50 01 movzbl 0x1(%eax),%edx
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14c: 83 c0 01 add $0x1,%eax
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14f: 84 d2 test %dl,%dl
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151: 74 0d je 160 <strchr+0x30>
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if (*s == c) {
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153: 38 d1 cmp %dl,%cl
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155: 75 f1 jne 148 <strchr+0x18>
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return (char*)s;
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}
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}
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return 0;
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}
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157: 5d pop %ebp
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158: c3 ret
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159: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi
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return 0;
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160: 31 c0 xor %eax,%eax
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}
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162: 5d pop %ebp
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163: c3 ret
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164: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi
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16b: 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi
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16f: 90 nop
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00000170 <gets>:
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char* gets(char *buf, int max) {
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170: 55 push %ebp
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171: 89 e5 mov %esp,%ebp
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173: 57 push %edi
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174: 56 push %esi
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int i, cc;
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char c;
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for (i = 0; i + 1 < max;) {
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cc = read(0, &c, 1);
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175: 8d 7d e7 lea -0x19(%ebp),%edi
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char* gets(char *buf, int max) {
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178: 53 push %ebx
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for (i = 0; i + 1 < max;) {
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179: 31 db xor %ebx,%ebx
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char* gets(char *buf, int max) {
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17b: 83 ec 1c sub $0x1c,%esp
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for (i = 0; i + 1 < max;) {
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17e: eb 27 jmp 1a7 <gets+0x37>
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cc = read(0, &c, 1);
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180: 83 ec 04 sub $0x4,%esp
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183: 6a 01 push $0x1
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185: 57 push %edi
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186: 6a 00 push $0x0
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188: e8 2e 01 00 00 call 2bb <read>
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if (cc < 1) {
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18d: 83 c4 10 add $0x10,%esp
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190: 85 c0 test %eax,%eax
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192: 7e 1d jle 1b1 <gets+0x41>
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break;
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}
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buf[i++] = c;
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194: 0f b6 45 e7 movzbl -0x19(%ebp),%eax
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198: 8b 55 08 mov 0x8(%ebp),%edx
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19b: 88 44 1a ff mov %al,-0x1(%edx,%ebx,1)
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if (c == '\n' || c == '\r') {
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19f: 3c 0a cmp $0xa,%al
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1a1: 74 1d je 1c0 <gets+0x50>
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1a3: 3c 0d cmp $0xd,%al
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1a5: 74 19 je 1c0 <gets+0x50>
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for (i = 0; i + 1 < max;) {
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1a7: 89 de mov %ebx,%esi
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1a9: 83 c3 01 add $0x1,%ebx
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1ac: 3b 5d 0c cmp 0xc(%ebp),%ebx
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1af: 7c cf jl 180 <gets+0x10>
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break;
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}
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}
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buf[i] = '\0';
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1b1: 8b 45 08 mov 0x8(%ebp),%eax
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1b4: c6 04 30 00 movb $0x0,(%eax,%esi,1)
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return buf;
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}
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1b8: 8d 65 f4 lea -0xc(%ebp),%esp
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1bb: 5b pop %ebx
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1bc: 5e pop %esi
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1bd: 5f pop %edi
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1be: 5d pop %ebp
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1bf: c3 ret
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buf[i] = '\0';
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1c0: 8b 45 08 mov 0x8(%ebp),%eax
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1c3: 89 de mov %ebx,%esi
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1c5: c6 04 30 00 movb $0x0,(%eax,%esi,1)
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}
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1c9: 8d 65 f4 lea -0xc(%ebp),%esp
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1cc: 5b pop %ebx
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1cd: 5e pop %esi
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1ce: 5f pop %edi
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1cf: 5d pop %ebp
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1d0: c3 ret
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1d1: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi
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1d8: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi
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1df: 90 nop
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000001e0 <stat>:
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int stat(const char *n, struct stat *st) {
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1e0: 55 push %ebp
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1e1: 89 e5 mov %esp,%ebp
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1e3: 56 push %esi
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1e4: 53 push %ebx
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int fd;
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int r;
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fd = open(n, O_RDONLY);
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1e5: 83 ec 08 sub $0x8,%esp
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1e8: 6a 00 push $0x0
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1ea: ff 75 08 push 0x8(%ebp)
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1ed: e8 19 01 00 00 call 30b <open>
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if (fd < 0) {
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1f2: 83 c4 10 add $0x10,%esp
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1f5: 85 c0 test %eax,%eax
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1f7: 78 27 js 220 <stat+0x40>
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return -1;
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}
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r = fstat(fd, st);
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1f9: 83 ec 08 sub $0x8,%esp
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1fc: ff 75 0c push 0xc(%ebp)
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1ff: 89 c3 mov %eax,%ebx
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201: 50 push %eax
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202: e8 cc 00 00 00 call 2d3 <fstat>
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close(fd);
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207: 89 1c 24 mov %ebx,(%esp)
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r = fstat(fd, st);
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20a: 89 c6 mov %eax,%esi
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close(fd);
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20c: e8 2a 01 00 00 call 33b <close>
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return r;
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211: 83 c4 10 add $0x10,%esp
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}
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214: 8d 65 f8 lea -0x8(%ebp),%esp
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217: 89 f0 mov %esi,%eax
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219: 5b pop %ebx
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21a: 5e pop %esi
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21b: 5d pop %ebp
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21c: c3 ret
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21d: 8d 76 00 lea 0x0(%esi),%esi
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return -1;
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220: be ff ff ff ff mov $0xffffffff,%esi
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225: eb ed jmp 214 <stat+0x34>
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227: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi
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22e: 66 90 xchg %ax,%ax
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00000230 <atoi>:
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int atoi(const char *s) {
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230: 55 push %ebp
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231: 89 e5 mov %esp,%ebp
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233: 53 push %ebx
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234: 8b 55 08 mov 0x8(%ebp),%edx
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int n;
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n = 0;
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while ('0' <= *s && *s <= '9') {
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237: 0f be 02 movsbl (%edx),%eax
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23a: 8d 48 d0 lea -0x30(%eax),%ecx
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23d: 80 f9 09 cmp $0x9,%cl
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n = 0;
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240: b9 00 00 00 00 mov $0x0,%ecx
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while ('0' <= *s && *s <= '9') {
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245: 77 1e ja 265 <atoi+0x35>
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247: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi
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24e: 66 90 xchg %ax,%ax
|
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n = n * 10 + *s++ - '0';
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250: 83 c2 01 add $0x1,%edx
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253: 8d 0c 89 lea (%ecx,%ecx,4),%ecx
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256: 8d 4c 48 d0 lea -0x30(%eax,%ecx,2),%ecx
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while ('0' <= *s && *s <= '9') {
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25a: 0f be 02 movsbl (%edx),%eax
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25d: 8d 58 d0 lea -0x30(%eax),%ebx
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260: 80 fb 09 cmp $0x9,%bl
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263: 76 eb jbe 250 <atoi+0x20>
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|
}
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|
return n;
|
|
}
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265: 8b 5d fc mov -0x4(%ebp),%ebx
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268: 89 c8 mov %ecx,%eax
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26a: c9 leave
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26b: c3 ret
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26c: 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi
|
|
|
|
00000270 <memmove>:
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|
|
|
void* memmove(void *vdst, const void *vsrc, int n) {
|
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270: 55 push %ebp
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|
271: 89 e5 mov %esp,%ebp
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|
273: 57 push %edi
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274: 8b 45 10 mov 0x10(%ebp),%eax
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277: 8b 55 08 mov 0x8(%ebp),%edx
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27a: 56 push %esi
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27b: 8b 75 0c mov 0xc(%ebp),%esi
|
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char *dst;
|
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const char *src;
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|
|
dst = vdst;
|
|
src = vsrc;
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|
while (n-- > 0) {
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|
27e: 85 c0 test %eax,%eax
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280: 7e 13 jle 295 <memmove+0x25>
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282: 01 d0 add %edx,%eax
|
|
dst = vdst;
|
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284: 89 d7 mov %edx,%edi
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|
286: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi
|
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28d: 8d 76 00 lea 0x0(%esi),%esi
|
|
*dst++ = *src++;
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|
290: a4 movsb %ds:(%esi),%es:(%edi)
|
|
while (n-- > 0) {
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291: 39 f8 cmp %edi,%eax
|
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293: 75 fb jne 290 <memmove+0x20>
|
|
}
|
|
return vdst;
|
|
}
|
|
295: 5e pop %esi
|
|
296: 89 d0 mov %edx,%eax
|
|
298: 5f pop %edi
|
|
299: 5d pop %ebp
|
|
29a: c3 ret
|
|
|
|
0000029b <fork>:
|
|
name: \
|
|
movl $SYS_ ## name, %eax; \
|
|
int $T_SYSCALL; \
|
|
ret
|
|
|
|
SYSCALL(fork)
|
|
29b: b8 01 00 00 00 mov $0x1,%eax
|
|
2a0: cd 40 int $0x40
|
|
2a2: c3 ret
|
|
|
|
000002a3 <exit>:
|
|
SYSCALL(exit)
|
|
2a3: b8 02 00 00 00 mov $0x2,%eax
|
|
2a8: cd 40 int $0x40
|
|
2aa: c3 ret
|
|
|
|
000002ab <wait>:
|
|
SYSCALL(wait)
|
|
2ab: b8 03 00 00 00 mov $0x3,%eax
|
|
2b0: cd 40 int $0x40
|
|
2b2: c3 ret
|
|
|
|
000002b3 <pipe>:
|
|
SYSCALL(pipe)
|
|
2b3: b8 04 00 00 00 mov $0x4,%eax
|
|
2b8: cd 40 int $0x40
|
|
2ba: c3 ret
|
|
|
|
000002bb <read>:
|
|
SYSCALL(read)
|
|
2bb: b8 05 00 00 00 mov $0x5,%eax
|
|
2c0: cd 40 int $0x40
|
|
2c2: c3 ret
|
|
|
|
000002c3 <kill>:
|
|
SYSCALL(kill)
|
|
2c3: b8 06 00 00 00 mov $0x6,%eax
|
|
2c8: cd 40 int $0x40
|
|
2ca: c3 ret
|
|
|
|
000002cb <exec>:
|
|
SYSCALL(exec)
|
|
2cb: b8 07 00 00 00 mov $0x7,%eax
|
|
2d0: cd 40 int $0x40
|
|
2d2: c3 ret
|
|
|
|
000002d3 <fstat>:
|
|
SYSCALL(fstat)
|
|
2d3: b8 08 00 00 00 mov $0x8,%eax
|
|
2d8: cd 40 int $0x40
|
|
2da: c3 ret
|
|
|
|
000002db <chdir>:
|
|
SYSCALL(chdir)
|
|
2db: b8 09 00 00 00 mov $0x9,%eax
|
|
2e0: cd 40 int $0x40
|
|
2e2: c3 ret
|
|
|
|
000002e3 <dup>:
|
|
SYSCALL(dup)
|
|
2e3: b8 0a 00 00 00 mov $0xa,%eax
|
|
2e8: cd 40 int $0x40
|
|
2ea: c3 ret
|
|
|
|
000002eb <getpid>:
|
|
SYSCALL(getpid)
|
|
2eb: b8 0b 00 00 00 mov $0xb,%eax
|
|
2f0: cd 40 int $0x40
|
|
2f2: c3 ret
|
|
|
|
000002f3 <sbrk>:
|
|
SYSCALL(sbrk)
|
|
2f3: b8 0c 00 00 00 mov $0xc,%eax
|
|
2f8: cd 40 int $0x40
|
|
2fa: c3 ret
|
|
|
|
000002fb <sleep>:
|
|
SYSCALL(sleep)
|
|
2fb: b8 0d 00 00 00 mov $0xd,%eax
|
|
300: cd 40 int $0x40
|
|
302: c3 ret
|
|
|
|
00000303 <uptime>:
|
|
SYSCALL(uptime)
|
|
303: b8 0e 00 00 00 mov $0xe,%eax
|
|
308: cd 40 int $0x40
|
|
30a: c3 ret
|
|
|
|
0000030b <open>:
|
|
SYSCALL(open)
|
|
30b: b8 0f 00 00 00 mov $0xf,%eax
|
|
310: cd 40 int $0x40
|
|
312: c3 ret
|
|
|
|
00000313 <write>:
|
|
SYSCALL(write)
|
|
313: b8 10 00 00 00 mov $0x10,%eax
|
|
318: cd 40 int $0x40
|
|
31a: c3 ret
|
|
|
|
0000031b <mknod>:
|
|
SYSCALL(mknod)
|
|
31b: b8 11 00 00 00 mov $0x11,%eax
|
|
320: cd 40 int $0x40
|
|
322: c3 ret
|
|
|
|
00000323 <unlink>:
|
|
SYSCALL(unlink)
|
|
323: b8 12 00 00 00 mov $0x12,%eax
|
|
328: cd 40 int $0x40
|
|
32a: c3 ret
|
|
|
|
0000032b <link>:
|
|
SYSCALL(link)
|
|
32b: b8 13 00 00 00 mov $0x13,%eax
|
|
330: cd 40 int $0x40
|
|
332: c3 ret
|
|
|
|
00000333 <mkdir>:
|
|
SYSCALL(mkdir)
|
|
333: b8 14 00 00 00 mov $0x14,%eax
|
|
338: cd 40 int $0x40
|
|
33a: c3 ret
|
|
|
|
0000033b <close>:
|
|
SYSCALL(close)
|
|
33b: b8 15 00 00 00 mov $0x15,%eax
|
|
340: cd 40 int $0x40
|
|
342: c3 ret
|
|
|
|
00000343 <getch>:
|
|
SYSCALL(getch)
|
|
343: b8 16 00 00 00 mov $0x16,%eax
|
|
348: cd 40 int $0x40
|
|
34a: c3 ret
|
|
|
|
0000034b <greeting>:
|
|
SYSCALL(greeting)
|
|
34b: b8 17 00 00 00 mov $0x17,%eax
|
|
350: cd 40 int $0x40
|
|
352: c3 ret
|
|
|
|
00000353 <shutdown>:
|
|
SYSCALL(shutdown)
|
|
353: b8 18 00 00 00 mov $0x18,%eax
|
|
358: cd 40 int $0x40
|
|
35a: c3 ret
|
|
|
|
0000035b <screen>:
|
|
SYSCALL(screen)
|
|
35b: b8 19 00 00 00 mov $0x19,%eax
|
|
360: cd 40 int $0x40
|
|
362: c3 ret
|
|
|
|
00000363 <cls>:
|
|
SYSCALL(cls)
|
|
363: b8 1a 00 00 00 mov $0x1a,%eax
|
|
368: cd 40 int $0x40
|
|
36a: c3 ret
|
|
36b: 66 90 xchg %ax,%ax
|
|
36d: 66 90 xchg %ax,%ax
|
|
36f: 90 nop
|
|
|
|
00000370 <printint>:
|
|
|
|
static void putc(int fd, char c) {
|
|
write(fd, &c, 1);
|
|
}
|
|
|
|
static void printint(int fd, int xx, int base, int sgn) {
|
|
370: 55 push %ebp
|
|
371: 89 e5 mov %esp,%ebp
|
|
373: 57 push %edi
|
|
374: 56 push %esi
|
|
375: 53 push %ebx
|
|
376: 83 ec 3c sub $0x3c,%esp
|
|
379: 89 4d c4 mov %ecx,-0x3c(%ebp)
|
|
uint x;
|
|
|
|
neg = 0;
|
|
if (sgn && xx < 0) {
|
|
neg = 1;
|
|
x = -xx;
|
|
37c: 89 d1 mov %edx,%ecx
|
|
static void printint(int fd, int xx, int base, int sgn) {
|
|
37e: 89 45 b8 mov %eax,-0x48(%ebp)
|
|
if (sgn && xx < 0) {
|
|
381: 85 d2 test %edx,%edx
|
|
383: 0f 89 7f 00 00 00 jns 408 <printint+0x98>
|
|
389: f6 45 08 01 testb $0x1,0x8(%ebp)
|
|
38d: 74 79 je 408 <printint+0x98>
|
|
neg = 1;
|
|
38f: c7 45 bc 01 00 00 00 movl $0x1,-0x44(%ebp)
|
|
x = -xx;
|
|
396: f7 d9 neg %ecx
|
|
}
|
|
else {
|
|
x = xx;
|
|
}
|
|
|
|
i = 0;
|
|
398: 31 db xor %ebx,%ebx
|
|
39a: 8d 75 d7 lea -0x29(%ebp),%esi
|
|
39d: 8d 76 00 lea 0x0(%esi),%esi
|
|
do {
|
|
buf[i++] = digits[x % base];
|
|
3a0: 89 c8 mov %ecx,%eax
|
|
3a2: 31 d2 xor %edx,%edx
|
|
3a4: 89 cf mov %ecx,%edi
|
|
3a6: f7 75 c4 divl -0x3c(%ebp)
|
|
3a9: 0f b6 92 b4 07 00 00 movzbl 0x7b4(%edx),%edx
|
|
3b0: 89 45 c0 mov %eax,-0x40(%ebp)
|
|
3b3: 89 d8 mov %ebx,%eax
|
|
3b5: 8d 5b 01 lea 0x1(%ebx),%ebx
|
|
}
|
|
while ((x /= base) != 0);
|
|
3b8: 8b 4d c0 mov -0x40(%ebp),%ecx
|
|
buf[i++] = digits[x % base];
|
|
3bb: 88 14 1e mov %dl,(%esi,%ebx,1)
|
|
while ((x /= base) != 0);
|
|
3be: 39 7d c4 cmp %edi,-0x3c(%ebp)
|
|
3c1: 76 dd jbe 3a0 <printint+0x30>
|
|
if (neg) {
|
|
3c3: 8b 4d bc mov -0x44(%ebp),%ecx
|
|
3c6: 85 c9 test %ecx,%ecx
|
|
3c8: 74 0c je 3d6 <printint+0x66>
|
|
buf[i++] = '-';
|
|
3ca: c6 44 1d d8 2d movb $0x2d,-0x28(%ebp,%ebx,1)
|
|
buf[i++] = digits[x % base];
|
|
3cf: 89 d8 mov %ebx,%eax
|
|
buf[i++] = '-';
|
|
3d1: ba 2d 00 00 00 mov $0x2d,%edx
|
|
}
|
|
|
|
while (--i >= 0) {
|
|
3d6: 8b 7d b8 mov -0x48(%ebp),%edi
|
|
3d9: 8d 5c 05 d7 lea -0x29(%ebp,%eax,1),%ebx
|
|
3dd: eb 07 jmp 3e6 <printint+0x76>
|
|
3df: 90 nop
|
|
putc(fd, buf[i]);
|
|
3e0: 0f b6 13 movzbl (%ebx),%edx
|
|
3e3: 83 eb 01 sub $0x1,%ebx
|
|
write(fd, &c, 1);
|
|
3e6: 83 ec 04 sub $0x4,%esp
|
|
3e9: 88 55 d7 mov %dl,-0x29(%ebp)
|
|
3ec: 6a 01 push $0x1
|
|
3ee: 56 push %esi
|
|
3ef: 57 push %edi
|
|
3f0: e8 1e ff ff ff call 313 <write>
|
|
while (--i >= 0) {
|
|
3f5: 83 c4 10 add $0x10,%esp
|
|
3f8: 39 de cmp %ebx,%esi
|
|
3fa: 75 e4 jne 3e0 <printint+0x70>
|
|
}
|
|
}
|
|
3fc: 8d 65 f4 lea -0xc(%ebp),%esp
|
|
3ff: 5b pop %ebx
|
|
400: 5e pop %esi
|
|
401: 5f pop %edi
|
|
402: 5d pop %ebp
|
|
403: c3 ret
|
|
404: 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi
|
|
neg = 0;
|
|
408: c7 45 bc 00 00 00 00 movl $0x0,-0x44(%ebp)
|
|
40f: eb 87 jmp 398 <printint+0x28>
|
|
411: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi
|
|
418: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi
|
|
41f: 90 nop
|
|
|
|
00000420 <printf>:
|
|
|
|
// Print to the given fd. Only understands %d, %x, %p, %s.
|
|
void printf(int fd, const char *fmt, ...) {
|
|
420: 55 push %ebp
|
|
421: 89 e5 mov %esp,%ebp
|
|
423: 57 push %edi
|
|
424: 56 push %esi
|
|
425: 53 push %ebx
|
|
426: 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++) {
|
|
429: 8b 5d 0c mov 0xc(%ebp),%ebx
|
|
void printf(int fd, const char *fmt, ...) {
|
|
42c: 8b 75 08 mov 0x8(%ebp),%esi
|
|
for (i = 0; fmt[i]; i++) {
|
|
42f: 0f b6 13 movzbl (%ebx),%edx
|
|
432: 84 d2 test %dl,%dl
|
|
434: 74 6a je 4a0 <printf+0x80>
|
|
ap = (uint*)(void*)&fmt + 1;
|
|
436: 8d 45 10 lea 0x10(%ebp),%eax
|
|
439: 83 c3 01 add $0x1,%ebx
|
|
write(fd, &c, 1);
|
|
43c: 8d 7d e7 lea -0x19(%ebp),%edi
|
|
state = 0;
|
|
43f: 31 c9 xor %ecx,%ecx
|
|
ap = (uint*)(void*)&fmt + 1;
|
|
441: 89 45 d0 mov %eax,-0x30(%ebp)
|
|
444: eb 36 jmp 47c <printf+0x5c>
|
|
446: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi
|
|
44d: 8d 76 00 lea 0x0(%esi),%esi
|
|
450: 89 4d d4 mov %ecx,-0x2c(%ebp)
|
|
c = fmt[i] & 0xff;
|
|
if (state == 0) {
|
|
if (c == '%') {
|
|
state = '%';
|
|
453: b9 25 00 00 00 mov $0x25,%ecx
|
|
if (c == '%') {
|
|
458: 83 f8 25 cmp $0x25,%eax
|
|
45b: 74 15 je 472 <printf+0x52>
|
|
write(fd, &c, 1);
|
|
45d: 83 ec 04 sub $0x4,%esp
|
|
460: 88 55 e7 mov %dl,-0x19(%ebp)
|
|
463: 6a 01 push $0x1
|
|
465: 57 push %edi
|
|
466: 56 push %esi
|
|
467: e8 a7 fe ff ff call 313 <write>
|
|
46c: 8b 4d d4 mov -0x2c(%ebp),%ecx
|
|
}
|
|
else {
|
|
putc(fd, c);
|
|
46f: 83 c4 10 add $0x10,%esp
|
|
for (i = 0; fmt[i]; i++) {
|
|
472: 0f b6 13 movzbl (%ebx),%edx
|
|
475: 83 c3 01 add $0x1,%ebx
|
|
478: 84 d2 test %dl,%dl
|
|
47a: 74 24 je 4a0 <printf+0x80>
|
|
c = fmt[i] & 0xff;
|
|
47c: 0f b6 c2 movzbl %dl,%eax
|
|
if (state == 0) {
|
|
47f: 85 c9 test %ecx,%ecx
|
|
481: 74 cd je 450 <printf+0x30>
|
|
}
|
|
}
|
|
else if (state == '%') {
|
|
483: 83 f9 25 cmp $0x25,%ecx
|
|
486: 75 ea jne 472 <printf+0x52>
|
|
if (c == 'd') {
|
|
488: 83 f8 25 cmp $0x25,%eax
|
|
48b: 0f 84 07 01 00 00 je 598 <printf+0x178>
|
|
491: 83 e8 63 sub $0x63,%eax
|
|
494: 83 f8 15 cmp $0x15,%eax
|
|
497: 77 17 ja 4b0 <printf+0x90>
|
|
499: ff 24 85 5c 07 00 00 jmp *0x75c(,%eax,4)
|
|
putc(fd, c);
|
|
}
|
|
state = 0;
|
|
}
|
|
}
|
|
}
|
|
4a0: 8d 65 f4 lea -0xc(%ebp),%esp
|
|
4a3: 5b pop %ebx
|
|
4a4: 5e pop %esi
|
|
4a5: 5f pop %edi
|
|
4a6: 5d pop %ebp
|
|
4a7: c3 ret
|
|
4a8: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi
|
|
4af: 90 nop
|
|
write(fd, &c, 1);
|
|
4b0: 83 ec 04 sub $0x4,%esp
|
|
4b3: 88 55 d4 mov %dl,-0x2c(%ebp)
|
|
4b6: 6a 01 push $0x1
|
|
4b8: 57 push %edi
|
|
4b9: 56 push %esi
|
|
4ba: c6 45 e7 25 movb $0x25,-0x19(%ebp)
|
|
4be: e8 50 fe ff ff call 313 <write>
|
|
putc(fd, c);
|
|
4c3: 0f b6 55 d4 movzbl -0x2c(%ebp),%edx
|
|
write(fd, &c, 1);
|
|
4c7: 83 c4 0c add $0xc,%esp
|
|
4ca: 88 55 e7 mov %dl,-0x19(%ebp)
|
|
4cd: 6a 01 push $0x1
|
|
4cf: 57 push %edi
|
|
4d0: 56 push %esi
|
|
4d1: e8 3d fe ff ff call 313 <write>
|
|
putc(fd, c);
|
|
4d6: 83 c4 10 add $0x10,%esp
|
|
state = 0;
|
|
4d9: 31 c9 xor %ecx,%ecx
|
|
4db: eb 95 jmp 472 <printf+0x52>
|
|
4dd: 8d 76 00 lea 0x0(%esi),%esi
|
|
printint(fd, *ap, 16, 0);
|
|
4e0: 83 ec 0c sub $0xc,%esp
|
|
4e3: b9 10 00 00 00 mov $0x10,%ecx
|
|
4e8: 6a 00 push $0x0
|
|
4ea: 8b 45 d0 mov -0x30(%ebp),%eax
|
|
4ed: 8b 10 mov (%eax),%edx
|
|
4ef: 89 f0 mov %esi,%eax
|
|
4f1: e8 7a fe ff ff call 370 <printint>
|
|
ap++;
|
|
4f6: 83 45 d0 04 addl $0x4,-0x30(%ebp)
|
|
4fa: 83 c4 10 add $0x10,%esp
|
|
state = 0;
|
|
4fd: 31 c9 xor %ecx,%ecx
|
|
4ff: e9 6e ff ff ff jmp 472 <printf+0x52>
|
|
504: 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi
|
|
s = (char*)*ap;
|
|
508: 8b 45 d0 mov -0x30(%ebp),%eax
|
|
50b: 8b 10 mov (%eax),%edx
|
|
ap++;
|
|
50d: 83 c0 04 add $0x4,%eax
|
|
510: 89 45 d0 mov %eax,-0x30(%ebp)
|
|
if (s == 0) {
|
|
513: 85 d2 test %edx,%edx
|
|
515: 0f 84 8d 00 00 00 je 5a8 <printf+0x188>
|
|
while (*s != 0) {
|
|
51b: 0f b6 02 movzbl (%edx),%eax
|
|
state = 0;
|
|
51e: 31 c9 xor %ecx,%ecx
|
|
while (*s != 0) {
|
|
520: 84 c0 test %al,%al
|
|
522: 0f 84 4a ff ff ff je 472 <printf+0x52>
|
|
528: 89 5d d4 mov %ebx,-0x2c(%ebp)
|
|
52b: 89 d3 mov %edx,%ebx
|
|
52d: 8d 76 00 lea 0x0(%esi),%esi
|
|
write(fd, &c, 1);
|
|
530: 83 ec 04 sub $0x4,%esp
|
|
s++;
|
|
533: 83 c3 01 add $0x1,%ebx
|
|
536: 88 45 e7 mov %al,-0x19(%ebp)
|
|
write(fd, &c, 1);
|
|
539: 6a 01 push $0x1
|
|
53b: 57 push %edi
|
|
53c: 56 push %esi
|
|
53d: e8 d1 fd ff ff call 313 <write>
|
|
while (*s != 0) {
|
|
542: 0f b6 03 movzbl (%ebx),%eax
|
|
545: 83 c4 10 add $0x10,%esp
|
|
548: 84 c0 test %al,%al
|
|
54a: 75 e4 jne 530 <printf+0x110>
|
|
state = 0;
|
|
54c: 8b 5d d4 mov -0x2c(%ebp),%ebx
|
|
54f: 31 c9 xor %ecx,%ecx
|
|
551: e9 1c ff ff ff jmp 472 <printf+0x52>
|
|
556: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi
|
|
55d: 8d 76 00 lea 0x0(%esi),%esi
|
|
printint(fd, *ap, 10, 1);
|
|
560: 83 ec 0c sub $0xc,%esp
|
|
563: b9 0a 00 00 00 mov $0xa,%ecx
|
|
568: 6a 01 push $0x1
|
|
56a: e9 7b ff ff ff jmp 4ea <printf+0xca>
|
|
56f: 90 nop
|
|
putc(fd, *ap);
|
|
570: 8b 45 d0 mov -0x30(%ebp),%eax
|
|
write(fd, &c, 1);
|
|
573: 83 ec 04 sub $0x4,%esp
|
|
putc(fd, *ap);
|
|
576: 8b 00 mov (%eax),%eax
|
|
write(fd, &c, 1);
|
|
578: 6a 01 push $0x1
|
|
57a: 57 push %edi
|
|
57b: 56 push %esi
|
|
putc(fd, *ap);
|
|
57c: 88 45 e7 mov %al,-0x19(%ebp)
|
|
write(fd, &c, 1);
|
|
57f: e8 8f fd ff ff call 313 <write>
|
|
ap++;
|
|
584: 83 45 d0 04 addl $0x4,-0x30(%ebp)
|
|
588: 83 c4 10 add $0x10,%esp
|
|
state = 0;
|
|
58b: 31 c9 xor %ecx,%ecx
|
|
58d: e9 e0 fe ff ff jmp 472 <printf+0x52>
|
|
592: 8d b6 00 00 00 00 lea 0x0(%esi),%esi
|
|
putc(fd, c);
|
|
598: 88 55 e7 mov %dl,-0x19(%ebp)
|
|
write(fd, &c, 1);
|
|
59b: 83 ec 04 sub $0x4,%esp
|
|
59e: e9 2a ff ff ff jmp 4cd <printf+0xad>
|
|
5a3: 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi
|
|
5a7: 90 nop
|
|
s = "(null)";
|
|
5a8: ba 54 07 00 00 mov $0x754,%edx
|
|
while (*s != 0) {
|
|
5ad: 89 5d d4 mov %ebx,-0x2c(%ebp)
|
|
5b0: b8 28 00 00 00 mov $0x28,%eax
|
|
5b5: 89 d3 mov %edx,%ebx
|
|
5b7: e9 74 ff ff ff jmp 530 <printf+0x110>
|
|
5bc: 66 90 xchg %ax,%ax
|
|
5be: 66 90 xchg %ax,%ax
|
|
|
|
000005c0 <free>:
|
|
typedef union header Header;
|
|
|
|
static Header base;
|
|
static Header *freep;
|
|
|
|
void free(void *ap) {
|
|
5c0: 55 push %ebp
|
|
Header *bp, *p;
|
|
|
|
bp = (Header*)ap - 1;
|
|
for (p = freep; !(bp > p && bp < p->s.ptr); p = p->s.ptr) {
|
|
5c1: a1 68 0a 00 00 mov 0xa68,%eax
|
|
void free(void *ap) {
|
|
5c6: 89 e5 mov %esp,%ebp
|
|
5c8: 57 push %edi
|
|
5c9: 56 push %esi
|
|
5ca: 53 push %ebx
|
|
5cb: 8b 5d 08 mov 0x8(%ebp),%ebx
|
|
bp = (Header*)ap - 1;
|
|
5ce: 8d 4b f8 lea -0x8(%ebx),%ecx
|
|
for (p = freep; !(bp > p && bp < p->s.ptr); p = p->s.ptr) {
|
|
5d1: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi
|
|
5d8: 89 c2 mov %eax,%edx
|
|
5da: 8b 00 mov (%eax),%eax
|
|
5dc: 39 ca cmp %ecx,%edx
|
|
5de: 73 30 jae 610 <free+0x50>
|
|
5e0: 39 c1 cmp %eax,%ecx
|
|
5e2: 72 04 jb 5e8 <free+0x28>
|
|
if (p >= p->s.ptr && (bp > p || bp < p->s.ptr)) {
|
|
5e4: 39 c2 cmp %eax,%edx
|
|
5e6: 72 f0 jb 5d8 <free+0x18>
|
|
break;
|
|
}
|
|
}
|
|
if (bp + bp->s.size == p->s.ptr) {
|
|
5e8: 8b 73 fc mov -0x4(%ebx),%esi
|
|
5eb: 8d 3c f1 lea (%ecx,%esi,8),%edi
|
|
5ee: 39 f8 cmp %edi,%eax
|
|
5f0: 74 30 je 622 <free+0x62>
|
|
bp->s.size += p->s.ptr->s.size;
|
|
bp->s.ptr = p->s.ptr->s.ptr;
|
|
5f2: 89 43 f8 mov %eax,-0x8(%ebx)
|
|
}
|
|
else {
|
|
bp->s.ptr = p->s.ptr;
|
|
}
|
|
if (p + p->s.size == bp) {
|
|
5f5: 8b 42 04 mov 0x4(%edx),%eax
|
|
5f8: 8d 34 c2 lea (%edx,%eax,8),%esi
|
|
5fb: 39 f1 cmp %esi,%ecx
|
|
5fd: 74 3a je 639 <free+0x79>
|
|
p->s.size += bp->s.size;
|
|
p->s.ptr = bp->s.ptr;
|
|
5ff: 89 0a mov %ecx,(%edx)
|
|
}
|
|
else {
|
|
p->s.ptr = bp;
|
|
}
|
|
freep = p;
|
|
}
|
|
601: 5b pop %ebx
|
|
freep = p;
|
|
602: 89 15 68 0a 00 00 mov %edx,0xa68
|
|
}
|
|
608: 5e pop %esi
|
|
609: 5f pop %edi
|
|
60a: 5d pop %ebp
|
|
60b: c3 ret
|
|
60c: 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi
|
|
if (p >= p->s.ptr && (bp > p || bp < p->s.ptr)) {
|
|
610: 39 c2 cmp %eax,%edx
|
|
612: 72 c4 jb 5d8 <free+0x18>
|
|
614: 39 c1 cmp %eax,%ecx
|
|
616: 73 c0 jae 5d8 <free+0x18>
|
|
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: 75 d0 jne 5f2 <free+0x32>
|
|
bp->s.size += p->s.ptr->s.size;
|
|
622: 03 70 04 add 0x4(%eax),%esi
|
|
625: 89 73 fc mov %esi,-0x4(%ebx)
|
|
bp->s.ptr = p->s.ptr->s.ptr;
|
|
628: 8b 02 mov (%edx),%eax
|
|
62a: 8b 00 mov (%eax),%eax
|
|
62c: 89 43 f8 mov %eax,-0x8(%ebx)
|
|
if (p + p->s.size == bp) {
|
|
62f: 8b 42 04 mov 0x4(%edx),%eax
|
|
632: 8d 34 c2 lea (%edx,%eax,8),%esi
|
|
635: 39 f1 cmp %esi,%ecx
|
|
637: 75 c6 jne 5ff <free+0x3f>
|
|
p->s.size += bp->s.size;
|
|
639: 03 43 fc add -0x4(%ebx),%eax
|
|
freep = p;
|
|
63c: 89 15 68 0a 00 00 mov %edx,0xa68
|
|
p->s.size += bp->s.size;
|
|
642: 89 42 04 mov %eax,0x4(%edx)
|
|
p->s.ptr = bp->s.ptr;
|
|
645: 8b 4b f8 mov -0x8(%ebx),%ecx
|
|
648: 89 0a mov %ecx,(%edx)
|
|
}
|
|
64a: 5b pop %ebx
|
|
64b: 5e pop %esi
|
|
64c: 5f pop %edi
|
|
64d: 5d pop %ebp
|
|
64e: c3 ret
|
|
64f: 90 nop
|
|
|
|
00000650 <malloc>:
|
|
hp->s.size = nu;
|
|
free((void*)(hp + 1));
|
|
return freep;
|
|
}
|
|
|
|
void* malloc(uint nbytes) {
|
|
650: 55 push %ebp
|
|
651: 89 e5 mov %esp,%ebp
|
|
653: 57 push %edi
|
|
654: 56 push %esi
|
|
655: 53 push %ebx
|
|
656: 83 ec 1c sub $0x1c,%esp
|
|
Header *p, *prevp;
|
|
uint nunits;
|
|
|
|
nunits = (nbytes + sizeof(Header) - 1) / sizeof(Header) + 1;
|
|
659: 8b 45 08 mov 0x8(%ebp),%eax
|
|
if ((prevp = freep) == 0) {
|
|
65c: 8b 3d 68 0a 00 00 mov 0xa68,%edi
|
|
nunits = (nbytes + sizeof(Header) - 1) / sizeof(Header) + 1;
|
|
662: 8d 70 07 lea 0x7(%eax),%esi
|
|
665: c1 ee 03 shr $0x3,%esi
|
|
668: 83 c6 01 add $0x1,%esi
|
|
if ((prevp = freep) == 0) {
|
|
66b: 85 ff test %edi,%edi
|
|
66d: 0f 84 9d 00 00 00 je 710 <malloc+0xc0>
|
|
base.s.ptr = freep = prevp = &base;
|
|
base.s.size = 0;
|
|
}
|
|
for (p = prevp->s.ptr;; prevp = p, p = p->s.ptr) {
|
|
673: 8b 17 mov (%edi),%edx
|
|
if (p->s.size >= nunits) {
|
|
675: 8b 4a 04 mov 0x4(%edx),%ecx
|
|
678: 39 f1 cmp %esi,%ecx
|
|
67a: 73 6a jae 6e6 <malloc+0x96>
|
|
67c: bb 00 10 00 00 mov $0x1000,%ebx
|
|
681: 39 de cmp %ebx,%esi
|
|
683: 0f 43 de cmovae %esi,%ebx
|
|
p = sbrk(nu * sizeof(Header));
|
|
686: 8d 04 dd 00 00 00 00 lea 0x0(,%ebx,8),%eax
|
|
68d: 89 45 e4 mov %eax,-0x1c(%ebp)
|
|
690: eb 17 jmp 6a9 <malloc+0x59>
|
|
692: 8d b6 00 00 00 00 lea 0x0(%esi),%esi
|
|
for (p = prevp->s.ptr;; prevp = p, p = p->s.ptr) {
|
|
698: 8b 02 mov (%edx),%eax
|
|
if (p->s.size >= nunits) {
|
|
69a: 8b 48 04 mov 0x4(%eax),%ecx
|
|
69d: 39 f1 cmp %esi,%ecx
|
|
69f: 73 4f jae 6f0 <malloc+0xa0>
|
|
p->s.size = nunits;
|
|
}
|
|
freep = prevp;
|
|
return (void*)(p + 1);
|
|
}
|
|
if (p == freep) {
|
|
6a1: 8b 3d 68 0a 00 00 mov 0xa68,%edi
|
|
6a7: 89 c2 mov %eax,%edx
|
|
6a9: 39 d7 cmp %edx,%edi
|
|
6ab: 75 eb jne 698 <malloc+0x48>
|
|
p = sbrk(nu * sizeof(Header));
|
|
6ad: 83 ec 0c sub $0xc,%esp
|
|
6b0: ff 75 e4 push -0x1c(%ebp)
|
|
6b3: e8 3b fc ff ff call 2f3 <sbrk>
|
|
if (p == (char*)-1) {
|
|
6b8: 83 c4 10 add $0x10,%esp
|
|
6bb: 83 f8 ff cmp $0xffffffff,%eax
|
|
6be: 74 1c je 6dc <malloc+0x8c>
|
|
hp->s.size = nu;
|
|
6c0: 89 58 04 mov %ebx,0x4(%eax)
|
|
free((void*)(hp + 1));
|
|
6c3: 83 ec 0c sub $0xc,%esp
|
|
6c6: 83 c0 08 add $0x8,%eax
|
|
6c9: 50 push %eax
|
|
6ca: e8 f1 fe ff ff call 5c0 <free>
|
|
return freep;
|
|
6cf: 8b 15 68 0a 00 00 mov 0xa68,%edx
|
|
if ((p = morecore(nunits)) == 0) {
|
|
6d5: 83 c4 10 add $0x10,%esp
|
|
6d8: 85 d2 test %edx,%edx
|
|
6da: 75 bc jne 698 <malloc+0x48>
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
6dc: 8d 65 f4 lea -0xc(%ebp),%esp
|
|
return 0;
|
|
6df: 31 c0 xor %eax,%eax
|
|
}
|
|
6e1: 5b pop %ebx
|
|
6e2: 5e pop %esi
|
|
6e3: 5f pop %edi
|
|
6e4: 5d pop %ebp
|
|
6e5: c3 ret
|
|
if (p->s.size >= nunits) {
|
|
6e6: 89 d0 mov %edx,%eax
|
|
6e8: 89 fa mov %edi,%edx
|
|
6ea: 8d b6 00 00 00 00 lea 0x0(%esi),%esi
|
|
if (p->s.size == nunits) {
|
|
6f0: 39 ce cmp %ecx,%esi
|
|
6f2: 74 4c je 740 <malloc+0xf0>
|
|
p->s.size -= nunits;
|
|
6f4: 29 f1 sub %esi,%ecx
|
|
6f6: 89 48 04 mov %ecx,0x4(%eax)
|
|
p += p->s.size;
|
|
6f9: 8d 04 c8 lea (%eax,%ecx,8),%eax
|
|
p->s.size = nunits;
|
|
6fc: 89 70 04 mov %esi,0x4(%eax)
|
|
freep = prevp;
|
|
6ff: 89 15 68 0a 00 00 mov %edx,0xa68
|
|
}
|
|
705: 8d 65 f4 lea -0xc(%ebp),%esp
|
|
return (void*)(p + 1);
|
|
708: 83 c0 08 add $0x8,%eax
|
|
}
|
|
70b: 5b pop %ebx
|
|
70c: 5e pop %esi
|
|
70d: 5f pop %edi
|
|
70e: 5d pop %ebp
|
|
70f: c3 ret
|
|
base.s.ptr = freep = prevp = &base;
|
|
710: c7 05 68 0a 00 00 6c movl $0xa6c,0xa68
|
|
717: 0a 00 00
|
|
base.s.size = 0;
|
|
71a: bf 6c 0a 00 00 mov $0xa6c,%edi
|
|
base.s.ptr = freep = prevp = &base;
|
|
71f: c7 05 6c 0a 00 00 6c movl $0xa6c,0xa6c
|
|
726: 0a 00 00
|
|
for (p = prevp->s.ptr;; prevp = p, p = p->s.ptr) {
|
|
729: 89 fa mov %edi,%edx
|
|
base.s.size = 0;
|
|
72b: c7 05 70 0a 00 00 00 movl $0x0,0xa70
|
|
732: 00 00 00
|
|
if (p->s.size >= nunits) {
|
|
735: e9 42 ff ff ff jmp 67c <malloc+0x2c>
|
|
73a: 8d b6 00 00 00 00 lea 0x0(%esi),%esi
|
|
prevp->s.ptr = p->s.ptr;
|
|
740: 8b 08 mov (%eax),%ecx
|
|
742: 89 0a mov %ecx,(%edx)
|
|
744: eb b9 jmp 6ff <malloc+0xaf>
|