Mercurial > hg > Members > innparusu > xv6_rpi_port
diff uprogs/stressfs.asm @ 0:c450faca55f4
Init
author | Tatsuki IHA <innparusu@cr.ie.u-ryukyu.ac.jp> |
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date | Sun, 22 Oct 2017 18:25:39 +0900 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/uprogs/stressfs.asm Sun Oct 22 18:25:39 2017 +0900 @@ -0,0 +1,1789 @@ + +_stressfs: file format elf32-littlearm + + +Disassembly of section .text: + +00000000 <main>: +#include "fs.h" +#include "fcntl.h" + +int +main(int argc, char *argv[]) +{ + 0: e92d4830 push {r4, r5, fp, lr} + 4: e28db00c add fp, sp, #12 + int fd, i; + char path[] = "stressfs0"; + 8: e59f20ec ldr r2, [pc, #236] ; fc <main+0xfc> +#include "fs.h" +#include "fcntl.h" + +int +main(int argc, char *argv[]) +{ + c: e24dde21 sub sp, sp, #528 ; 0x210 + int fd, i; + char path[] = "stressfs0"; + 10: e24b3018 sub r3, fp, #24 + 14: e8920007 ldm r2, {r0, r1, r2} + char data[512]; + + printf(1, "stressfs starting\n"); + memset(data, 'a', sizeof(data)); + + for(i = 0; i < 4; i++) + 18: e3a04000 mov r4, #0 + +int +main(int argc, char *argv[]) +{ + int fd, i; + char path[] = "stressfs0"; + 1c: e8a30003 stmia r3!, {r0, r1} + char data[512]; + + printf(1, "stressfs starting\n"); + 20: e3a00001 mov r0, #1 + 24: e59f10d4 ldr r1, [pc, #212] ; 100 <main+0x100> + +int +main(int argc, char *argv[]) +{ + int fd, i; + char path[] = "stressfs0"; + 28: e1c320b0 strh r2, [r3] + char data[512]; + + printf(1, "stressfs starting\n"); + 2c: eb000232 bl 8fc <printf> + memset(data, 'a', sizeof(data)); + 30: e24b0f86 sub r0, fp, #536 ; 0x218 + 34: e3a01061 mov r1, #97 ; 0x61 + 38: e3a02c02 mov r2, #512 ; 0x200 + 3c: eb000060 bl 1c4 <memset> + + for(i = 0; i < 4; i++) + if(fork() > 0) + 40: eb0000cd bl 37c <fork> + 44: e3500000 cmp r0, #0 + 48: ca000029 bgt f4 <main+0xf4> + char data[512]; + + printf(1, "stressfs starting\n"); + memset(data, 'a', sizeof(data)); + + for(i = 0; i < 4; i++) + 4c: e2844001 add r4, r4, #1 + 50: e3540004 cmp r4, #4 + 54: 1afffff9 bne 40 <main+0x40> + 58: e1a05004 mov r5, r4 + if(fork() > 0) + break; + + printf(1, "write %d\n", i); + 5c: e1a02004 mov r2, r4 + 60: e3a00001 mov r0, #1 + 64: e59f1098 ldr r1, [pc, #152] ; 104 <main+0x104> + 68: eb000223 bl 8fc <printf> + + path[8] += i; + 6c: e55b3010 ldrb r3, [fp, #-16] + fd = open(path, O_CREATE | O_RDWR); + 70: e24b0018 sub r0, fp, #24 + 74: e59f108c ldr r1, [pc, #140] ; 108 <main+0x108> + if(fork() > 0) + break; + + printf(1, "write %d\n", i); + + path[8] += i; + 78: e0855003 add r5, r5, r3 + 7c: e54b5010 strb r5, [fp, #-16] + fd = open(path, O_CREATE | O_RDWR); + 80: eb000132 bl 550 <open> + 84: e3a04014 mov r4, #20 + 88: e1a05000 mov r5, r0 + for(i = 0; i < 20; i++) +// printf(fd, "%d\n", i); + write(fd, data, sizeof(data)); + 8c: e1a00005 mov r0, r5 + 90: e24b1f86 sub r1, fp, #536 ; 0x218 + 94: e3a02c02 mov r2, #512 ; 0x200 + 98: eb0000f8 bl 480 <write> + + printf(1, "write %d\n", i); + + path[8] += i; + fd = open(path, O_CREATE | O_RDWR); + for(i = 0; i < 20; i++) + 9c: e2544001 subs r4, r4, #1 + a0: 1afffff9 bne 8c <main+0x8c> +// printf(fd, "%d\n", i); + write(fd, data, sizeof(data)); + close(fd); + a4: e1a00005 mov r0, r5 + a8: eb000101 bl 4b4 <close> + + printf(1, "read\n"); + ac: e3a00001 mov r0, #1 + b0: e59f1054 ldr r1, [pc, #84] ; 10c <main+0x10c> + b4: eb000210 bl 8fc <printf> + + fd = open(path, O_RDONLY); + b8: e1a01004 mov r1, r4 + bc: e24b0018 sub r0, fp, #24 + c0: eb000122 bl 550 <open> + c4: e3a04014 mov r4, #20 + c8: e1a05000 mov r5, r0 + for (i = 0; i < 20; i++) + read(fd, data, sizeof(data)); + cc: e1a00005 mov r0, r5 + d0: e24b1f86 sub r1, fp, #536 ; 0x218 + d4: e3a02c02 mov r2, #512 ; 0x200 + d8: eb0000db bl 44c <read> + close(fd); + + printf(1, "read\n"); + + fd = open(path, O_RDONLY); + for (i = 0; i < 20; i++) + dc: e2544001 subs r4, r4, #1 + e0: 1afffff9 bne cc <main+0xcc> + read(fd, data, sizeof(data)); + close(fd); + e4: e1a00005 mov r0, r5 + e8: eb0000f1 bl 4b4 <close> + + wait(); + ec: eb0000bc bl 3e4 <wait> + + exit(); + f0: eb0000ae bl 3b0 <exit> + + printf(1, "stressfs starting\n"); + memset(data, 'a', sizeof(data)); + + for(i = 0; i < 4; i++) + if(fork() > 0) + f4: e6ef5074 uxtb r5, r4 + f8: eaffffd7 b 5c <main+0x5c> + fc: 00000c0c .word 0x00000c0c + 100: 00000be4 .word 0x00000be4 + 104: 00000bf8 .word 0x00000bf8 + 108: 00000202 .word 0x00000202 + 10c: 00000c04 .word 0x00000c04 + +00000110 <strcpy>: +#include "user.h" +#include "arm.h" + +char* +strcpy(char *s, char *t) +{ + 110: e52db004 push {fp} ; (str fp, [sp, #-4]!) + char *os; + + os = s; + while((*s++ = *t++) != 0) + 114: e1a02000 mov r2, r0 +#include "user.h" +#include "arm.h" + +char* +strcpy(char *s, char *t) +{ + 118: e28db000 add fp, sp, #0 + char *os; + + os = s; + while((*s++ = *t++) != 0) + 11c: e4d13001 ldrb r3, [r1], #1 + 120: e3530000 cmp r3, #0 + 124: e4c23001 strb r3, [r2], #1 + 128: 1afffffb bne 11c <strcpy+0xc> + ; + return os; +} + 12c: e28bd000 add sp, fp, #0 + 130: e8bd0800 pop {fp} + 134: e12fff1e bx lr + +00000138 <strcmp>: + +int +strcmp(const char *p, const char *q) +{ + 138: e52db004 push {fp} ; (str fp, [sp, #-4]!) + 13c: e28db000 add fp, sp, #0 + while(*p && *p == *q) + 140: e5d03000 ldrb r3, [r0] + 144: e5d12000 ldrb r2, [r1] + 148: e3530000 cmp r3, #0 + 14c: 1a000004 bne 164 <strcmp+0x2c> + 150: ea000005 b 16c <strcmp+0x34> + 154: e5f03001 ldrb r3, [r0, #1]! + 158: e3530000 cmp r3, #0 + 15c: 0a000006 beq 17c <strcmp+0x44> + 160: e5f12001 ldrb r2, [r1, #1]! + 164: e1530002 cmp r3, r2 + 168: 0afffff9 beq 154 <strcmp+0x1c> + p++, q++; + return (uchar)*p - (uchar)*q; +} + 16c: e0620003 rsb r0, r2, r3 + 170: e28bd000 add sp, fp, #0 + 174: e8bd0800 pop {fp} + 178: e12fff1e bx lr +} + +int +strcmp(const char *p, const char *q) +{ + while(*p && *p == *q) + 17c: e5d12001 ldrb r2, [r1, #1] + 180: eafffff9 b 16c <strcmp+0x34> + +00000184 <strlen>: + return (uchar)*p - (uchar)*q; +} + +uint +strlen(char *s) +{ + 184: e52db004 push {fp} ; (str fp, [sp, #-4]!) + 188: e28db000 add fp, sp, #0 + int n; + + for(n = 0; s[n]; n++) + 18c: e5d03000 ldrb r3, [r0] + 190: e3530000 cmp r3, #0 + 194: 01a00003 moveq r0, r3 + 198: 0a000006 beq 1b8 <strlen+0x34> + 19c: e1a02000 mov r2, r0 + 1a0: e3a03000 mov r3, #0 + 1a4: e5f21001 ldrb r1, [r2, #1]! + 1a8: e2833001 add r3, r3, #1 + 1ac: e1a00003 mov r0, r3 + 1b0: e3510000 cmp r1, #0 + 1b4: 1afffffa bne 1a4 <strlen+0x20> + ; + return n; +} + 1b8: e28bd000 add sp, fp, #0 + 1bc: e8bd0800 pop {fp} + 1c0: e12fff1e bx lr + +000001c4 <memset>: +memset(void *dst, int c, uint n) +{ + char *p=dst; + u32 rc=n; + + while (rc-- > 0) *p++ = c; + 1c4: e3520000 cmp r2, #0 + return n; +} + +void* +memset(void *dst, int c, uint n) +{ + 1c8: e52db004 push {fp} ; (str fp, [sp, #-4]!) + 1cc: e28db000 add fp, sp, #0 + char *p=dst; + u32 rc=n; + + while (rc-- > 0) *p++ = c; + 1d0: 0a000006 beq 1f0 <memset+0x2c> + 1d4: e6ef1071 uxtb r1, r1 + 1d8: e1a03002 mov r3, r2 +} + +void* +memset(void *dst, int c, uint n) +{ + char *p=dst; + 1dc: e1a0c000 mov ip, r0 + u32 rc=n; + + while (rc-- > 0) *p++ = c; + 1e0: e2533001 subs r3, r3, #1 + 1e4: e4cc1001 strb r1, [ip], #1 + 1e8: 1afffffc bne 1e0 <memset+0x1c> + 1ec: e0800002 add r0, r0, r2 + return (void *)p; +} + 1f0: e28bd000 add sp, fp, #0 + 1f4: e8bd0800 pop {fp} + 1f8: e12fff1e bx lr + +000001fc <strchr>: + +char* +strchr(const char *s, char c) +{ + 1fc: e52db004 push {fp} ; (str fp, [sp, #-4]!) + 200: e28db000 add fp, sp, #0 + for(; *s; s++) + 204: e5d03000 ldrb r3, [r0] + 208: e3530000 cmp r3, #0 + 20c: 1a000004 bne 224 <strchr+0x28> + 210: ea000008 b 238 <strchr+0x3c> + 214: e5d03001 ldrb r3, [r0, #1] + 218: e2800001 add r0, r0, #1 + 21c: e3530000 cmp r3, #0 + 220: 0a000004 beq 238 <strchr+0x3c> + if(*s == c) + 224: e1530001 cmp r3, r1 + 228: 1afffff9 bne 214 <strchr+0x18> + return (char*)s; + return 0; +} + 22c: e28bd000 add sp, fp, #0 + 230: e8bd0800 pop {fp} + 234: e12fff1e bx lr +strchr(const char *s, char c) +{ + for(; *s; s++) + if(*s == c) + return (char*)s; + return 0; + 238: e1a00003 mov r0, r3 + 23c: eafffffa b 22c <strchr+0x30> + +00000240 <gets>: +} + +char* +gets(char *buf, int max) +{ + 240: e92d49f0 push {r4, r5, r6, r7, r8, fp, lr} + 244: e28db018 add fp, sp, #24 + 248: e24dd00c sub sp, sp, #12 + 24c: e1a08000 mov r8, r0 + 250: e1a07001 mov r7, r1 + int i, cc; + char c; + + for(i=0; i+1 < max; ){ + 254: e1a06000 mov r6, r0 + 258: e3a05000 mov r5, #0 + 25c: ea000008 b 284 <gets+0x44> + cc = read(0, &c, 1); + 260: eb000079 bl 44c <read> + if(cc < 1) + 264: e3500000 cmp r0, #0 + 268: da00000b ble 29c <gets+0x5c> + break; + buf[i++] = c; + 26c: e55b301d ldrb r3, [fp, #-29] + if(c == '\n' || c == '\r') + 270: e1a05004 mov r5, r4 + 274: e353000a cmp r3, #10 + 278: 1353000d cmpne r3, #13 + + for(i=0; i+1 < max; ){ + cc = read(0, &c, 1); + if(cc < 1) + break; + buf[i++] = c; + 27c: e4c63001 strb r3, [r6], #1 + if(c == '\n' || c == '\r') + 280: 0a00000a beq 2b0 <gets+0x70> +{ + int i, cc; + char c; + + for(i=0; i+1 < max; ){ + cc = read(0, &c, 1); + 284: e3a02001 mov r2, #1 +gets(char *buf, int max) +{ + int i, cc; + char c; + + for(i=0; i+1 < max; ){ + 288: e0854002 add r4, r5, r2 + 28c: e1540007 cmp r4, r7 + cc = read(0, &c, 1); + 290: e3a00000 mov r0, #0 + 294: e24b101d sub r1, fp, #29 +gets(char *buf, int max) +{ + int i, cc; + char c; + + for(i=0; i+1 < max; ){ + 298: bafffff0 blt 260 <gets+0x20> + break; + buf[i++] = c; + if(c == '\n' || c == '\r') + break; + } + buf[i] = '\0'; + 29c: e3a03000 mov r3, #0 + 2a0: e7c83005 strb r3, [r8, r5] + return buf; +} + 2a4: e1a00008 mov r0, r8 + 2a8: e24bd018 sub sp, fp, #24 + 2ac: e8bd89f0 pop {r4, r5, r6, r7, r8, fp, pc} +gets(char *buf, int max) +{ + int i, cc; + char c; + + for(i=0; i+1 < max; ){ + 2b0: e1a05004 mov r5, r4 + 2b4: eafffff8 b 29c <gets+0x5c> + +000002b8 <stat>: + return buf; +} + +int +stat(char *n, struct stat *st) +{ + 2b8: e92d4830 push {r4, r5, fp, lr} + 2bc: e1a05001 mov r5, r1 + 2c0: e28db00c add fp, sp, #12 + int fd; + int r; + + fd = open(n, O_RDONLY); + 2c4: e3a01000 mov r1, #0 + 2c8: eb0000a0 bl 550 <open> + if(fd < 0) + 2cc: e2504000 subs r4, r0, #0 + return -1; + 2d0: b3e05000 mvnlt r5, #0 +{ + int fd; + int r; + + fd = open(n, O_RDONLY); + if(fd < 0) + 2d4: ba000004 blt 2ec <stat+0x34> + return -1; + r = fstat(fd, st); + 2d8: e1a01005 mov r1, r5 + 2dc: eb0000c2 bl 5ec <fstat> + 2e0: e1a05000 mov r5, r0 + close(fd); + 2e4: e1a00004 mov r0, r4 + 2e8: eb000071 bl 4b4 <close> + return r; +} + 2ec: e1a00005 mov r0, r5 + 2f0: e8bd8830 pop {r4, r5, fp, pc} + +000002f4 <atoi>: + +int +atoi(const char *s) +{ + 2f4: e52db004 push {fp} ; (str fp, [sp, #-4]!) + 2f8: e28db000 add fp, sp, #0 + int n; + + n = 0; + while('0' <= *s && *s <= '9') + 2fc: e5d03000 ldrb r3, [r0] + 300: e2432030 sub r2, r3, #48 ; 0x30 + 304: e6ef2072 uxtb r2, r2 + 308: e3520009 cmp r2, #9 +int +atoi(const char *s) +{ + int n; + + n = 0; + 30c: 83a00000 movhi r0, #0 + while('0' <= *s && *s <= '9') + 310: 8a000009 bhi 33c <atoi+0x48> + 314: e1a02000 mov r2, r0 +int +atoi(const char *s) +{ + int n; + + n = 0; + 318: e3a00000 mov r0, #0 + while('0' <= *s && *s <= '9') + n = n*10 + *s++ - '0'; + 31c: e0800100 add r0, r0, r0, lsl #2 + 320: e0830080 add r0, r3, r0, lsl #1 +atoi(const char *s) +{ + int n; + + n = 0; + while('0' <= *s && *s <= '9') + 324: e5f23001 ldrb r3, [r2, #1]! + n = n*10 + *s++ - '0'; + 328: e2400030 sub r0, r0, #48 ; 0x30 +atoi(const char *s) +{ + int n; + + n = 0; + while('0' <= *s && *s <= '9') + 32c: e2431030 sub r1, r3, #48 ; 0x30 + 330: e6ef1071 uxtb r1, r1 + 334: e3510009 cmp r1, #9 + 338: 9afffff7 bls 31c <atoi+0x28> + n = n*10 + *s++ - '0'; + return n; +} + 33c: e28bd000 add sp, fp, #0 + 340: e8bd0800 pop {fp} + 344: e12fff1e bx lr + +00000348 <memmove>: +{ + char *dst, *src; + + dst = vdst; + src = vsrc; + while(n-- > 0) + 348: e3520000 cmp r2, #0 + return n; +} + +void* +memmove(void *vdst, void *vsrc, int n) +{ + 34c: e52db004 push {fp} ; (str fp, [sp, #-4]!) + 350: e28db000 add fp, sp, #0 + char *dst, *src; + + dst = vdst; + src = vsrc; + while(n-- > 0) + 354: da000005 ble 370 <memmove+0x28> + n = n*10 + *s++ - '0'; + return n; +} + +void* +memmove(void *vdst, void *vsrc, int n) + 358: e0802002 add r2, r0, r2 +{ + char *dst, *src; + + dst = vdst; + 35c: e1a03000 mov r3, r0 + src = vsrc; + while(n-- > 0) + *dst++ = *src++; + 360: e4d1c001 ldrb ip, [r1], #1 + 364: e4c3c001 strb ip, [r3], #1 +{ + char *dst, *src; + + dst = vdst; + src = vsrc; + while(n-- > 0) + 368: e1530002 cmp r3, r2 + 36c: 1afffffb bne 360 <memmove+0x18> + *dst++ = *src++; + return vdst; +} + 370: e28bd000 add sp, fp, #0 + 374: e8bd0800 pop {fp} + 378: e12fff1e bx lr + +0000037c <fork>: + 37c: e92d4000 push {lr} + 380: e92d0008 push {r3} + 384: e92d0004 push {r2} + 388: e92d0002 push {r1} + 38c: e92d0001 push {r0} + 390: e3a00001 mov r0, #1 + 394: ef000040 svc 0x00000040 + 398: e8bd0002 pop {r1} + 39c: e8bd0002 pop {r1} + 3a0: e8bd0004 pop {r2} + 3a4: e8bd0008 pop {r3} + 3a8: e8bd4000 pop {lr} + 3ac: e12fff1e bx lr + +000003b0 <exit>: + 3b0: e92d4000 push {lr} + 3b4: e92d0008 push {r3} + 3b8: e92d0004 push {r2} + 3bc: e92d0002 push {r1} + 3c0: e92d0001 push {r0} + 3c4: e3a00002 mov r0, #2 + 3c8: ef000040 svc 0x00000040 + 3cc: e8bd0002 pop {r1} + 3d0: e8bd0002 pop {r1} + 3d4: e8bd0004 pop {r2} + 3d8: e8bd0008 pop {r3} + 3dc: e8bd4000 pop {lr} + 3e0: e12fff1e bx lr + +000003e4 <wait>: + 3e4: e92d4000 push {lr} + 3e8: e92d0008 push {r3} + 3ec: e92d0004 push {r2} + 3f0: e92d0002 push {r1} + 3f4: e92d0001 push {r0} + 3f8: e3a00003 mov r0, #3 + 3fc: ef000040 svc 0x00000040 + 400: e8bd0002 pop {r1} + 404: e8bd0002 pop {r1} + 408: e8bd0004 pop {r2} + 40c: e8bd0008 pop {r3} + 410: e8bd4000 pop {lr} + 414: e12fff1e bx lr + +00000418 <pipe>: + 418: e92d4000 push {lr} + 41c: e92d0008 push {r3} + 420: e92d0004 push {r2} + 424: e92d0002 push {r1} + 428: e92d0001 push {r0} + 42c: e3a00004 mov r0, #4 + 430: ef000040 svc 0x00000040 + 434: e8bd0002 pop {r1} + 438: e8bd0002 pop {r1} + 43c: e8bd0004 pop {r2} + 440: e8bd0008 pop {r3} + 444: e8bd4000 pop {lr} + 448: e12fff1e bx lr + +0000044c <read>: + 44c: e92d4000 push {lr} + 450: e92d0008 push {r3} + 454: e92d0004 push {r2} + 458: e92d0002 push {r1} + 45c: e92d0001 push {r0} + 460: e3a00005 mov r0, #5 + 464: ef000040 svc 0x00000040 + 468: e8bd0002 pop {r1} + 46c: e8bd0002 pop {r1} + 470: e8bd0004 pop {r2} + 474: e8bd0008 pop {r3} + 478: e8bd4000 pop {lr} + 47c: e12fff1e bx lr + +00000480 <write>: + 480: e92d4000 push {lr} + 484: e92d0008 push {r3} + 488: e92d0004 push {r2} + 48c: e92d0002 push {r1} + 490: e92d0001 push {r0} + 494: e3a00010 mov r0, #16 + 498: ef000040 svc 0x00000040 + 49c: e8bd0002 pop {r1} + 4a0: e8bd0002 pop {r1} + 4a4: e8bd0004 pop {r2} + 4a8: e8bd0008 pop {r3} + 4ac: e8bd4000 pop {lr} + 4b0: e12fff1e bx lr + +000004b4 <close>: + 4b4: e92d4000 push {lr} + 4b8: e92d0008 push {r3} + 4bc: e92d0004 push {r2} + 4c0: e92d0002 push {r1} + 4c4: e92d0001 push {r0} + 4c8: e3a00015 mov r0, #21 + 4cc: ef000040 svc 0x00000040 + 4d0: e8bd0002 pop {r1} + 4d4: e8bd0002 pop {r1} + 4d8: e8bd0004 pop {r2} + 4dc: e8bd0008 pop {r3} + 4e0: e8bd4000 pop {lr} + 4e4: e12fff1e bx lr + +000004e8 <kill>: + 4e8: e92d4000 push {lr} + 4ec: e92d0008 push {r3} + 4f0: e92d0004 push {r2} + 4f4: e92d0002 push {r1} + 4f8: e92d0001 push {r0} + 4fc: e3a00006 mov r0, #6 + 500: ef000040 svc 0x00000040 + 504: e8bd0002 pop {r1} + 508: e8bd0002 pop {r1} + 50c: e8bd0004 pop {r2} + 510: e8bd0008 pop {r3} + 514: e8bd4000 pop {lr} + 518: e12fff1e bx lr + +0000051c <exec>: + 51c: e92d4000 push {lr} + 520: e92d0008 push {r3} + 524: e92d0004 push {r2} + 528: e92d0002 push {r1} + 52c: e92d0001 push {r0} + 530: e3a00007 mov r0, #7 + 534: ef000040 svc 0x00000040 + 538: e8bd0002 pop {r1} + 53c: e8bd0002 pop {r1} + 540: e8bd0004 pop {r2} + 544: e8bd0008 pop {r3} + 548: e8bd4000 pop {lr} + 54c: e12fff1e bx lr + +00000550 <open>: + 550: e92d4000 push {lr} + 554: e92d0008 push {r3} + 558: e92d0004 push {r2} + 55c: e92d0002 push {r1} + 560: e92d0001 push {r0} + 564: e3a0000f mov r0, #15 + 568: ef000040 svc 0x00000040 + 56c: e8bd0002 pop {r1} + 570: e8bd0002 pop {r1} + 574: e8bd0004 pop {r2} + 578: e8bd0008 pop {r3} + 57c: e8bd4000 pop {lr} + 580: e12fff1e bx lr + +00000584 <mknod>: + 584: e92d4000 push {lr} + 588: e92d0008 push {r3} + 58c: e92d0004 push {r2} + 590: e92d0002 push {r1} + 594: e92d0001 push {r0} + 598: e3a00011 mov r0, #17 + 59c: ef000040 svc 0x00000040 + 5a0: e8bd0002 pop {r1} + 5a4: e8bd0002 pop {r1} + 5a8: e8bd0004 pop {r2} + 5ac: e8bd0008 pop {r3} + 5b0: e8bd4000 pop {lr} + 5b4: e12fff1e bx lr + +000005b8 <unlink>: + 5b8: e92d4000 push {lr} + 5bc: e92d0008 push {r3} + 5c0: e92d0004 push {r2} + 5c4: e92d0002 push {r1} + 5c8: e92d0001 push {r0} + 5cc: e3a00012 mov r0, #18 + 5d0: ef000040 svc 0x00000040 + 5d4: e8bd0002 pop {r1} + 5d8: e8bd0002 pop {r1} + 5dc: e8bd0004 pop {r2} + 5e0: e8bd0008 pop {r3} + 5e4: e8bd4000 pop {lr} + 5e8: e12fff1e bx lr + +000005ec <fstat>: + 5ec: e92d4000 push {lr} + 5f0: e92d0008 push {r3} + 5f4: e92d0004 push {r2} + 5f8: e92d0002 push {r1} + 5fc: e92d0001 push {r0} + 600: e3a00008 mov r0, #8 + 604: ef000040 svc 0x00000040 + 608: e8bd0002 pop {r1} + 60c: e8bd0002 pop {r1} + 610: e8bd0004 pop {r2} + 614: e8bd0008 pop {r3} + 618: e8bd4000 pop {lr} + 61c: e12fff1e bx lr + +00000620 <link>: + 620: e92d4000 push {lr} + 624: e92d0008 push {r3} + 628: e92d0004 push {r2} + 62c: e92d0002 push {r1} + 630: e92d0001 push {r0} + 634: e3a00013 mov r0, #19 + 638: ef000040 svc 0x00000040 + 63c: e8bd0002 pop {r1} + 640: e8bd0002 pop {r1} + 644: e8bd0004 pop {r2} + 648: e8bd0008 pop {r3} + 64c: e8bd4000 pop {lr} + 650: e12fff1e bx lr + +00000654 <mkdir>: + 654: e92d4000 push {lr} + 658: e92d0008 push {r3} + 65c: e92d0004 push {r2} + 660: e92d0002 push {r1} + 664: e92d0001 push {r0} + 668: e3a00014 mov r0, #20 + 66c: ef000040 svc 0x00000040 + 670: e8bd0002 pop {r1} + 674: e8bd0002 pop {r1} + 678: e8bd0004 pop {r2} + 67c: e8bd0008 pop {r3} + 680: e8bd4000 pop {lr} + 684: e12fff1e bx lr + +00000688 <chdir>: + 688: e92d4000 push {lr} + 68c: e92d0008 push {r3} + 690: e92d0004 push {r2} + 694: e92d0002 push {r1} + 698: e92d0001 push {r0} + 69c: e3a00009 mov r0, #9 + 6a0: ef000040 svc 0x00000040 + 6a4: e8bd0002 pop {r1} + 6a8: e8bd0002 pop {r1} + 6ac: e8bd0004 pop {r2} + 6b0: e8bd0008 pop {r3} + 6b4: e8bd4000 pop {lr} + 6b8: e12fff1e bx lr + +000006bc <dup>: + 6bc: e92d4000 push {lr} + 6c0: e92d0008 push {r3} + 6c4: e92d0004 push {r2} + 6c8: e92d0002 push {r1} + 6cc: e92d0001 push {r0} + 6d0: e3a0000a mov r0, #10 + 6d4: ef000040 svc 0x00000040 + 6d8: e8bd0002 pop {r1} + 6dc: e8bd0002 pop {r1} + 6e0: e8bd0004 pop {r2} + 6e4: e8bd0008 pop {r3} + 6e8: e8bd4000 pop {lr} + 6ec: e12fff1e bx lr + +000006f0 <getpid>: + 6f0: e92d4000 push {lr} + 6f4: e92d0008 push {r3} + 6f8: e92d0004 push {r2} + 6fc: e92d0002 push {r1} + 700: e92d0001 push {r0} + 704: e3a0000b mov r0, #11 + 708: ef000040 svc 0x00000040 + 70c: e8bd0002 pop {r1} + 710: e8bd0002 pop {r1} + 714: e8bd0004 pop {r2} + 718: e8bd0008 pop {r3} + 71c: e8bd4000 pop {lr} + 720: e12fff1e bx lr + +00000724 <sbrk>: + 724: e92d4000 push {lr} + 728: e92d0008 push {r3} + 72c: e92d0004 push {r2} + 730: e92d0002 push {r1} + 734: e92d0001 push {r0} + 738: e3a0000c mov r0, #12 + 73c: ef000040 svc 0x00000040 + 740: e8bd0002 pop {r1} + 744: e8bd0002 pop {r1} + 748: e8bd0004 pop {r2} + 74c: e8bd0008 pop {r3} + 750: e8bd4000 pop {lr} + 754: e12fff1e bx lr + +00000758 <sleep>: + 758: e92d4000 push {lr} + 75c: e92d0008 push {r3} + 760: e92d0004 push {r2} + 764: e92d0002 push {r1} + 768: e92d0001 push {r0} + 76c: e3a0000d mov r0, #13 + 770: ef000040 svc 0x00000040 + 774: e8bd0002 pop {r1} + 778: e8bd0002 pop {r1} + 77c: e8bd0004 pop {r2} + 780: e8bd0008 pop {r3} + 784: e8bd4000 pop {lr} + 788: e12fff1e bx lr + +0000078c <uptime>: + 78c: e92d4000 push {lr} + 790: e92d0008 push {r3} + 794: e92d0004 push {r2} + 798: e92d0002 push {r1} + 79c: e92d0001 push {r0} + 7a0: e3a0000e mov r0, #14 + 7a4: ef000040 svc 0x00000040 + 7a8: e8bd0002 pop {r1} + 7ac: e8bd0002 pop {r1} + 7b0: e8bd0004 pop {r2} + 7b4: e8bd0008 pop {r3} + 7b8: e8bd4000 pop {lr} + 7bc: e12fff1e bx lr + +000007c0 <putc>: +#include "stat.h" +#include "user.h" + +static void +putc(int fd, char c) +{ + 7c0: e92d4800 push {fp, lr} + 7c4: e28db004 add fp, sp, #4 + 7c8: e24b3004 sub r3, fp, #4 + 7cc: e24dd008 sub sp, sp, #8 + write(fd, &c, 1); + 7d0: e3a02001 mov r2, #1 +#include "stat.h" +#include "user.h" + +static void +putc(int fd, char c) +{ + 7d4: e5631001 strb r1, [r3, #-1]! + write(fd, &c, 1); + 7d8: e1a01003 mov r1, r3 + 7dc: ebffff27 bl 480 <write> +} + 7e0: e24bd004 sub sp, fp, #4 + 7e4: e8bd8800 pop {fp, pc} + +000007e8 <printint>: + return q; +} + +static void +printint(int fd, int xx, int base, int sgn) +{ + 7e8: e92d4ff0 push {r4, r5, r6, r7, r8, r9, sl, fp, lr} + 7ec: e1a04000 mov r4, r0 + char buf[16]; + int i, neg; + uint x, y, b; + + neg = 0; + if(sgn && xx < 0){ + 7f0: e1a00fa1 lsr r0, r1, #31 + 7f4: e3530000 cmp r3, #0 + 7f8: 03a03000 moveq r3, #0 + 7fc: 12003001 andne r3, r0, #1 + return q; +} + +static void +printint(int fd, int xx, int base, int sgn) +{ + 800: e28db020 add fp, sp, #32 + char buf[16]; + int i, neg; + uint x, y, b; + + neg = 0; + if(sgn && xx < 0){ + 804: e3530000 cmp r3, #0 + return q; +} + +static void +printint(int fd, int xx, int base, int sgn) +{ + 808: e24dd014 sub sp, sp, #20 + 80c: e59f909c ldr r9, [pc, #156] ; 8b0 <printint+0xc8> + uint x, y, b; + + neg = 0; + if(sgn && xx < 0){ + neg = 1; + x = -xx; + 810: 12611000 rsbne r1, r1, #0 + int i, neg; + uint x, y, b; + + neg = 0; + if(sgn && xx < 0){ + neg = 1; + 814: 13a03001 movne r3, #1 + } else { + x = xx; + } + + b = base; + i = 0; + 818: e3a0a000 mov sl, #0 + 81c: e24b6034 sub r6, fp, #52 ; 0x34 + for(i=31;i>=0;i--){ + r = r << 1; + r = r | ((n >> i) & 1); + if(r >= d) { + r = r - d; + q = q | (1 << i); + 820: e3a08001 mov r8, #1 + write(fd, &c, 1); +} + +u32 div(u32 n, u32 d) // long division +{ + u32 q=0, r=0; + 824: e3a07000 mov r7, #0 + int i; + + for(i=31;i>=0;i--){ + 828: e3a0001f mov r0, #31 + write(fd, &c, 1); +} + +u32 div(u32 n, u32 d) // long division +{ + u32 q=0, r=0; + 82c: e1a0c007 mov ip, r7 + int i; + + for(i=31;i>=0;i--){ + r = r << 1; + r = r | ((n >> i) & 1); + 830: e1a0e031 lsr lr, r1, r0 + 834: e20ee001 and lr, lr, #1 + 838: e18ec08c orr ip, lr, ip, lsl #1 + if(r >= d) { + 83c: e152000c cmp r2, ip + r = r - d; + q = q | (1 << i); + 840: 91877018 orrls r7, r7, r8, lsl r0 + + for(i=31;i>=0;i--){ + r = r << 1; + r = r | ((n >> i) & 1); + if(r >= d) { + r = r - d; + 844: 9062c00c rsbls ip, r2, ip +u32 div(u32 n, u32 d) // long division +{ + u32 q=0, r=0; + int i; + + for(i=31;i>=0;i--){ + 848: e2500001 subs r0, r0, #1 + 84c: 2afffff7 bcs 830 <printint+0x48> + + b = base; + i = 0; + do{ + y = div(x, b); + buf[i++] = digits[x - y * b]; + 850: e0000792 mul r0, r2, r7 + }while((x = y) != 0); + 854: e3570000 cmp r7, #0 + + b = base; + i = 0; + do{ + y = div(x, b); + buf[i++] = digits[x - y * b]; + 858: e0601001 rsb r1, r0, r1 + 85c: e28a5001 add r5, sl, #1 + 860: e7d91001 ldrb r1, [r9, r1] + 864: e7c6100a strb r1, [r6, sl] + }while((x = y) != 0); + 868: 11a01007 movne r1, r7 + + b = base; + i = 0; + do{ + y = div(x, b); + buf[i++] = digits[x - y * b]; + 86c: 11a0a005 movne sl, r5 + 870: 1affffeb bne 824 <printint+0x3c> + }while((x = y) != 0); + if(neg) + 874: e3530000 cmp r3, #0 + buf[i++] = '-'; + 878: 124b2024 subne r2, fp, #36 ; 0x24 + 87c: 10823005 addne r3, r2, r5 + 880: 128a5002 addne r5, sl, #2 + + while(--i >= 0) + 884: e2455001 sub r5, r5, #1 + do{ + y = div(x, b); + buf[i++] = digits[x - y * b]; + }while((x = y) != 0); + if(neg) + buf[i++] = '-'; + 888: 13a0202d movne r2, #45 ; 0x2d + 88c: 15432010 strbne r2, [r3, #-16] + + while(--i >= 0) + putc(fd, buf[i]); + 890: e7d61005 ldrb r1, [r6, r5] + 894: e1a00004 mov r0, r4 + buf[i++] = digits[x - y * b]; + }while((x = y) != 0); + if(neg) + buf[i++] = '-'; + + while(--i >= 0) + 898: e2455001 sub r5, r5, #1 + putc(fd, buf[i]); + 89c: ebffffc7 bl 7c0 <putc> + buf[i++] = digits[x - y * b]; + }while((x = y) != 0); + if(neg) + buf[i++] = '-'; + + while(--i >= 0) + 8a0: e3750001 cmn r5, #1 + 8a4: 1afffff9 bne 890 <printint+0xa8> + putc(fd, buf[i]); +} + 8a8: e24bd020 sub sp, fp, #32 + 8ac: e8bd8ff0 pop {r4, r5, r6, r7, r8, r9, sl, fp, pc} + 8b0: 00000c18 .word 0x00000c18 + +000008b4 <div>: + write(fd, &c, 1); +} + +u32 div(u32 n, u32 d) // long division +{ + u32 q=0, r=0; + 8b4: e3a03000 mov r3, #0 +{ + write(fd, &c, 1); +} + +u32 div(u32 n, u32 d) // long division +{ + 8b8: e92d0830 push {r4, r5, fp} + 8bc: e1a02000 mov r2, r0 + 8c0: e28db008 add fp, sp, #8 + u32 q=0, r=0; + int i; + + for(i=31;i>=0;i--){ + 8c4: e3a0c01f mov ip, #31 + write(fd, &c, 1); +} + +u32 div(u32 n, u32 d) // long division +{ + u32 q=0, r=0; + 8c8: e1a00003 mov r0, r3 + for(i=31;i>=0;i--){ + r = r << 1; + r = r | ((n >> i) & 1); + if(r >= d) { + r = r - d; + q = q | (1 << i); + 8cc: e3a05001 mov r5, #1 + u32 q=0, r=0; + int i; + + for(i=31;i>=0;i--){ + r = r << 1; + r = r | ((n >> i) & 1); + 8d0: e1a04c32 lsr r4, r2, ip + 8d4: e2044001 and r4, r4, #1 + 8d8: e1843083 orr r3, r4, r3, lsl #1 + if(r >= d) { + 8dc: e1530001 cmp r3, r1 + r = r - d; + q = q | (1 << i); + 8e0: 21800c15 orrcs r0, r0, r5, lsl ip + + for(i=31;i>=0;i--){ + r = r << 1; + r = r | ((n >> i) & 1); + if(r >= d) { + r = r - d; + 8e4: 20613003 rsbcs r3, r1, r3 +u32 div(u32 n, u32 d) // long division +{ + u32 q=0, r=0; + int i; + + for(i=31;i>=0;i--){ + 8e8: e25cc001 subs ip, ip, #1 + 8ec: 2afffff7 bcs 8d0 <div+0x1c> + r = r - d; + q = q | (1 << i); + } + } + return q; +} + 8f0: e24bd008 sub sp, fp, #8 + 8f4: e8bd0830 pop {r4, r5, fp} + 8f8: e12fff1e bx lr + +000008fc <printf>: +} + +// Print to the given fd. Only understands %d, %x, %p, %s. +void +printf(int fd, char *fmt, ...) +{ + 8fc: e92d000e push {r1, r2, r3} + 900: e92d4ff0 push {r4, r5, r6, r7, r8, r9, sl, fp, lr} + 904: e28db020 add fp, sp, #32 + 908: e1a05000 mov r5, r0 + int c, i, state; + uint *ap; + + state = 0; + ap = (uint*)(void*)&fmt + 1; + for(i = 0; fmt[i]; i++){ + 90c: e59b4004 ldr r4, [fp, #4] + 910: e5d48000 ldrb r8, [r4] + 914: e3580000 cmp r8, #0 + 918: 0a000027 beq 9bc <printf+0xc0> + ap++; + } else if(c == 's'){ + s = (char*)*ap; + ap++; + if(s == 0) + s = "(null)"; + 91c: e59f712c ldr r7, [pc, #300] ; a50 <printf+0x154> + char *s; + int c, i, state; + uint *ap; + + state = 0; + ap = (uint*)(void*)&fmt + 1; + 920: e28b6008 add r6, fp, #8 +{ + char *s; + int c, i, state; + uint *ap; + + state = 0; + 924: e3a0a000 mov sl, #0 + 928: ea000008 b 950 <printf+0x54> + ap = (uint*)(void*)&fmt + 1; + for(i = 0; fmt[i]; i++){ + c = fmt[i] & 0xff; + if(state == 0){ + if(c == '%'){ + 92c: e3580025 cmp r8, #37 ; 0x25 + state = '%'; + 930: 01a0a008 moveq sl, r8 + state = 0; + ap = (uint*)(void*)&fmt + 1; + for(i = 0; fmt[i]; i++){ + c = fmt[i] & 0xff; + if(state == 0){ + if(c == '%'){ + 934: 0a000002 beq 944 <printf+0x48> + state = '%'; + } else { + putc(fd, c); + 938: e1a00005 mov r0, r5 + 93c: e1a01008 mov r1, r8 + 940: ebffff9e bl 7c0 <putc> + int c, i, state; + uint *ap; + + state = 0; + ap = (uint*)(void*)&fmt + 1; + for(i = 0; fmt[i]; i++){ + 944: e5f48001 ldrb r8, [r4, #1]! + 948: e3580000 cmp r8, #0 + 94c: 0a00001a beq 9bc <printf+0xc0> + c = fmt[i] & 0xff; + if(state == 0){ + 950: e35a0000 cmp sl, #0 + 954: 0afffff4 beq 92c <printf+0x30> + if(c == '%'){ + state = '%'; + } else { + putc(fd, c); + } + } else if(state == '%'){ + 958: e35a0025 cmp sl, #37 ; 0x25 + 95c: 1afffff8 bne 944 <printf+0x48> + if(c == 'd'){ + 960: e3580064 cmp r8, #100 ; 0x64 + 964: 0a00002c beq a1c <printf+0x120> + printint(fd, *ap, 10, 1); + ap++; + } else if(c == 'x' || c == 'p'){ + 968: e3580078 cmp r8, #120 ; 0x78 + 96c: 13580070 cmpne r8, #112 ; 0x70 + 970: 13a09000 movne r9, #0 + 974: 03a09001 moveq r9, #1 + 978: 0a000013 beq 9cc <printf+0xd0> + printint(fd, *ap, 16, 0); + ap++; + } else if(c == 's'){ + 97c: e3580073 cmp r8, #115 ; 0x73 + 980: 0a000018 beq 9e8 <printf+0xec> + s = "(null)"; + while(*s != 0){ + putc(fd, *s); + s++; + } + } else if(c == 'c'){ + 984: e3580063 cmp r8, #99 ; 0x63 + 988: 0a00002a beq a38 <printf+0x13c> + putc(fd, *ap); + ap++; + } else if(c == '%'){ + 98c: e3580025 cmp r8, #37 ; 0x25 + putc(fd, c); + 990: e1a0100a mov r1, sl + 994: e1a00005 mov r0, r5 + s++; + } + } else if(c == 'c'){ + putc(fd, *ap); + ap++; + } else if(c == '%'){ + 998: 0a000002 beq 9a8 <printf+0xac> + putc(fd, c); + } else { + // Unknown % sequence. Print it to draw attention. + putc(fd, '%'); + 99c: ebffff87 bl 7c0 <putc> + putc(fd, c); + 9a0: e1a00005 mov r0, r5 + 9a4: e1a01008 mov r1, r8 + 9a8: ebffff84 bl 7c0 <putc> + int c, i, state; + uint *ap; + + state = 0; + ap = (uint*)(void*)&fmt + 1; + for(i = 0; fmt[i]; i++){ + 9ac: e5f48001 ldrb r8, [r4, #1]! + } else { + // Unknown % sequence. Print it to draw attention. + putc(fd, '%'); + putc(fd, c); + } + state = 0; + 9b0: e1a0a009 mov sl, r9 + int c, i, state; + uint *ap; + + state = 0; + ap = (uint*)(void*)&fmt + 1; + for(i = 0; fmt[i]; i++){ + 9b4: e3580000 cmp r8, #0 + 9b8: 1affffe4 bne 950 <printf+0x54> + putc(fd, c); + } + state = 0; + } + } +} + 9bc: e24bd020 sub sp, fp, #32 + 9c0: e8bd4ff0 pop {r4, r5, r6, r7, r8, r9, sl, fp, lr} + 9c4: e28dd00c add sp, sp, #12 + 9c8: e12fff1e bx lr + } else if(state == '%'){ + if(c == 'd'){ + printint(fd, *ap, 10, 1); + ap++; + } else if(c == 'x' || c == 'p'){ + printint(fd, *ap, 16, 0); + 9cc: e1a00005 mov r0, r5 + 9d0: e4961004 ldr r1, [r6], #4 + 9d4: e3a02010 mov r2, #16 + 9d8: e3a03000 mov r3, #0 + 9dc: ebffff81 bl 7e8 <printint> + } else { + // Unknown % sequence. Print it to draw attention. + putc(fd, '%'); + putc(fd, c); + } + state = 0; + 9e0: e3a0a000 mov sl, #0 + 9e4: eaffffd6 b 944 <printf+0x48> + ap++; + } else if(c == 'x' || c == 'p'){ + printint(fd, *ap, 16, 0); + ap++; + } else if(c == 's'){ + s = (char*)*ap; + 9e8: e4968004 ldr r8, [r6], #4 + ap++; + if(s == 0) + s = "(null)"; + 9ec: e3580000 cmp r8, #0 + 9f0: 01a08007 moveq r8, r7 + while(*s != 0){ + 9f4: e5d81000 ldrb r1, [r8] + 9f8: e3510000 cmp r1, #0 + 9fc: 0a000004 beq a14 <printf+0x118> + putc(fd, *s); + a00: e1a00005 mov r0, r5 + a04: ebffff6d bl 7c0 <putc> + } else if(c == 's'){ + s = (char*)*ap; + ap++; + if(s == 0) + s = "(null)"; + while(*s != 0){ + a08: e5f81001 ldrb r1, [r8, #1]! + a0c: e3510000 cmp r1, #0 + a10: 1afffffa bne a00 <printf+0x104> + } else { + // Unknown % sequence. Print it to draw attention. + putc(fd, '%'); + putc(fd, c); + } + state = 0; + a14: e1a0a001 mov sl, r1 + a18: eaffffc9 b 944 <printf+0x48> + } else { + putc(fd, c); + } + } else if(state == '%'){ + if(c == 'd'){ + printint(fd, *ap, 10, 1); + a1c: e1a00005 mov r0, r5 + a20: e4961004 ldr r1, [r6], #4 + a24: e3a0200a mov r2, #10 + a28: e3a03001 mov r3, #1 + a2c: ebffff6d bl 7e8 <printint> + } else { + // Unknown % sequence. Print it to draw attention. + putc(fd, '%'); + putc(fd, c); + } + state = 0; + a30: e3a0a000 mov sl, #0 + a34: eaffffc2 b 944 <printf+0x48> + while(*s != 0){ + putc(fd, *s); + s++; + } + } else if(c == 'c'){ + putc(fd, *ap); + a38: e4961004 ldr r1, [r6], #4 + a3c: e1a00005 mov r0, r5 + } else { + // Unknown % sequence. Print it to draw attention. + putc(fd, '%'); + putc(fd, c); + } + state = 0; + a40: e1a0a009 mov sl, r9 + while(*s != 0){ + putc(fd, *s); + s++; + } + } else if(c == 'c'){ + putc(fd, *ap); + a44: e6ef1071 uxtb r1, r1 + a48: ebffff5c bl 7c0 <putc> + a4c: eaffffbc b 944 <printf+0x48> + a50: 00000c2c .word 0x00000c2c + +00000a54 <free>: +free(void *ap) +{ + Header *bp, *p; + + bp = (Header*)ap - 1; + for(p = freep; !(bp > p && bp < p->s.ptr); p = p->s.ptr) + a54: e59f3098 ldr r3, [pc, #152] ; af4 <free+0xa0> +static Header base; +static Header *freep; + +void +free(void *ap) +{ + a58: e92d0830 push {r4, r5, fp} + Header *bp, *p; + + bp = (Header*)ap - 1; + a5c: e240c008 sub ip, r0, #8 + for(p = freep; !(bp > p && bp < p->s.ptr); p = p->s.ptr) + a60: e5932000 ldr r2, [r3] +static Header base; +static Header *freep; + +void +free(void *ap) +{ + a64: e28db008 add fp, sp, #8 + Header *bp, *p; + + bp = (Header*)ap - 1; + for(p = freep; !(bp > p && bp < p->s.ptr); p = p->s.ptr) + a68: e152000c cmp r2, ip + a6c: e5921000 ldr r1, [r2] + a70: 2a000001 bcs a7c <free+0x28> + a74: e15c0001 cmp ip, r1 + a78: 3a000007 bcc a9c <free+0x48> + if(p >= p->s.ptr && (bp > p || bp < p->s.ptr)) + a7c: e1520001 cmp r2, r1 + a80: 3a000003 bcc a94 <free+0x40> + a84: e152000c cmp r2, ip + a88: 3a000003 bcc a9c <free+0x48> + a8c: e15c0001 cmp ip, r1 + a90: 3a000001 bcc a9c <free+0x48> +static Header base; +static Header *freep; + +void +free(void *ap) +{ + a94: e1a02001 mov r2, r1 + a98: eafffff2 b a68 <free+0x14> + + bp = (Header*)ap - 1; + for(p = freep; !(bp > p && bp < p->s.ptr); p = p->s.ptr) + if(p >= p->s.ptr && (bp > p || bp < p->s.ptr)) + break; + if(bp + bp->s.size == p->s.ptr){ + a9c: e5104004 ldr r4, [r0, #-4] + if(p + p->s.size == bp){ + p->s.size += bp->s.size; + p->s.ptr = bp->s.ptr; + } else + p->s.ptr = bp; + freep = p; + aa0: e5832000 str r2, [r3] + + bp = (Header*)ap - 1; + for(p = freep; !(bp > p && bp < p->s.ptr); p = p->s.ptr) + if(p >= p->s.ptr && (bp > p || bp < p->s.ptr)) + break; + if(bp + bp->s.size == p->s.ptr){ + aa4: e08c5184 add r5, ip, r4, lsl #3 + aa8: e1550001 cmp r5, r1 + bp->s.size += p->s.ptr->s.size; + aac: 05911004 ldreq r1, [r1, #4] + ab0: 00814004 addeq r4, r1, r4 + ab4: 05004004 streq r4, [r0, #-4] + bp->s.ptr = p->s.ptr->s.ptr; + ab8: 05921000 ldreq r1, [r2] + abc: 05911000 ldreq r1, [r1] + } else + bp->s.ptr = p->s.ptr; + ac0: e5001008 str r1, [r0, #-8] + if(p + p->s.size == bp){ + ac4: e5921004 ldr r1, [r2, #4] + ac8: e0824181 add r4, r2, r1, lsl #3 + acc: e15c0004 cmp ip, r4 + p->s.size += bp->s.size; + p->s.ptr = bp->s.ptr; + } else + p->s.ptr = bp; + ad0: 1582c000 strne ip, [r2] + bp->s.size += p->s.ptr->s.size; + bp->s.ptr = p->s.ptr->s.ptr; + } else + bp->s.ptr = p->s.ptr; + if(p + p->s.size == bp){ + p->s.size += bp->s.size; + ad4: 0510c004 ldreq ip, [r0, #-4] + ad8: 008c1001 addeq r1, ip, r1 + adc: 05821004 streq r1, [r2, #4] + p->s.ptr = bp->s.ptr; + ae0: 05101008 ldreq r1, [r0, #-8] + ae4: 05821000 streq r1, [r2] + } else + p->s.ptr = bp; + freep = p; +} + ae8: e24bd008 sub sp, fp, #8 + aec: e8bd0830 pop {r4, r5, fp} + af0: e12fff1e bx lr + af4: 00000c34 .word 0x00000c34 + +00000af8 <malloc>: + return freep; +} + +void* +malloc(uint nbytes) +{ + af8: e92d49f8 push {r3, r4, r5, r6, r7, r8, fp, lr} + Header *p, *prevp; + uint nunits; + + nunits = (nbytes + sizeof(Header) - 1)/sizeof(Header) + 1; + afc: e2804007 add r4, r0, #7 + if((prevp = freep) == 0){ + b00: e59f50d4 ldr r5, [pc, #212] ; bdc <malloc+0xe4> +malloc(uint nbytes) +{ + Header *p, *prevp; + uint nunits; + + nunits = (nbytes + sizeof(Header) - 1)/sizeof(Header) + 1; + b04: e1a041a4 lsr r4, r4, #3 + return freep; +} + +void* +malloc(uint nbytes) +{ + b08: e28db01c add fp, sp, #28 + Header *p, *prevp; + uint nunits; + + nunits = (nbytes + sizeof(Header) - 1)/sizeof(Header) + 1; + if((prevp = freep) == 0){ + b0c: e5953000 ldr r3, [r5] +malloc(uint nbytes) +{ + Header *p, *prevp; + uint nunits; + + nunits = (nbytes + sizeof(Header) - 1)/sizeof(Header) + 1; + b10: e2844001 add r4, r4, #1 + if((prevp = freep) == 0){ + b14: e3530000 cmp r3, #0 + b18: 0a00002b beq bcc <malloc+0xd4> + b1c: e5930000 ldr r0, [r3] + b20: e5902004 ldr r2, [r0, #4] + base.s.ptr = freep = prevp = &base; + base.s.size = 0; + } + for(p = prevp->s.ptr; ; prevp = p, p = p->s.ptr){ + if(p->s.size >= nunits){ + b24: e1520004 cmp r2, r4 + b28: 2a00001b bcs b9c <malloc+0xa4> +morecore(uint nu) +{ + char *p; + Header *hp; + + if(nu < 4096) + b2c: e59f80ac ldr r8, [pc, #172] ; be0 <malloc+0xe8> + p->s.size -= nunits; + p += p->s.size; + p->s.size = nunits; + } + freep = prevp; + return (void*)(p + 1); + b30: e1a07184 lsl r7, r4, #3 + b34: ea000003 b b48 <malloc+0x50> + nunits = (nbytes + sizeof(Header) - 1)/sizeof(Header) + 1; + if((prevp = freep) == 0){ + base.s.ptr = freep = prevp = &base; + base.s.size = 0; + } + for(p = prevp->s.ptr; ; prevp = p, p = p->s.ptr){ + b38: e5930000 ldr r0, [r3] + if(p->s.size >= nunits){ + b3c: e5902004 ldr r2, [r0, #4] + b40: e1540002 cmp r4, r2 + b44: 9a000014 bls b9c <malloc+0xa4> + p->s.size = nunits; + } + freep = prevp; + return (void*)(p + 1); + } + if(p == freep) + b48: e5952000 ldr r2, [r5] + b4c: e1a03000 mov r3, r0 + b50: e1500002 cmp r0, r2 + b54: 1afffff7 bne b38 <malloc+0x40> +morecore(uint nu) +{ + char *p; + Header *hp; + + if(nu < 4096) + b58: e1540008 cmp r4, r8 + nu = 4096; + p = sbrk(nu * sizeof(Header)); + b5c: 81a00007 movhi r0, r7 + b60: 93a00902 movls r0, #32768 ; 0x8000 +morecore(uint nu) +{ + char *p; + Header *hp; + + if(nu < 4096) + b64: 81a06004 movhi r6, r4 + b68: 93a06a01 movls r6, #4096 ; 0x1000 + nu = 4096; + p = sbrk(nu * sizeof(Header)); + b6c: ebfffeec bl 724 <sbrk> + b70: e1a03000 mov r3, r0 + if(p == (char*)-1) + b74: e3730001 cmn r3, #1 + return 0; + hp = (Header*)p; + hp->s.size = nu; + free((void*)(hp + 1)); + b78: e2800008 add r0, r0, #8 + Header *hp; + + if(nu < 4096) + nu = 4096; + p = sbrk(nu * sizeof(Header)); + if(p == (char*)-1) + b7c: 0a000010 beq bc4 <malloc+0xcc> + return 0; + hp = (Header*)p; + hp->s.size = nu; + b80: e5836004 str r6, [r3, #4] + free((void*)(hp + 1)); + b84: ebffffb2 bl a54 <free> + return freep; + b88: e5953000 ldr r3, [r5] + } + freep = prevp; + return (void*)(p + 1); + } + if(p == freep) + if((p = morecore(nunits)) == 0) + b8c: e3530000 cmp r3, #0 + b90: 1affffe8 bne b38 <malloc+0x40> + return 0; + b94: e1a00003 mov r0, r3 + } +} + b98: e8bd89f8 pop {r3, r4, r5, r6, r7, r8, fp, pc} + base.s.ptr = freep = prevp = &base; + base.s.size = 0; + } + for(p = prevp->s.ptr; ; prevp = p, p = p->s.ptr){ + if(p->s.size >= nunits){ + if(p->s.size == nunits) + b9c: e1540002 cmp r4, r2 + prevp->s.ptr = p->s.ptr; + else { + p->s.size -= nunits; + ba0: 10642002 rsbne r2, r4, r2 + ba4: 15802004 strne r2, [r0, #4] + base.s.size = 0; + } + for(p = prevp->s.ptr; ; prevp = p, p = p->s.ptr){ + if(p->s.size >= nunits){ + if(p->s.size == nunits) + prevp->s.ptr = p->s.ptr; + ba8: 05902000 ldreq r2, [r0] + else { + p->s.size -= nunits; + p += p->s.size; + bac: 10800182 addne r0, r0, r2, lsl #3 + base.s.size = 0; + } + for(p = prevp->s.ptr; ; prevp = p, p = p->s.ptr){ + if(p->s.size >= nunits){ + if(p->s.size == nunits) + prevp->s.ptr = p->s.ptr; + bb0: 05832000 streq r2, [r3] + else { + p->s.size -= nunits; + p += p->s.size; + p->s.size = nunits; + bb4: 15804004 strne r4, [r0, #4] + } + freep = prevp; + bb8: e5853000 str r3, [r5] + return (void*)(p + 1); + bbc: e2800008 add r0, r0, #8 + bc0: e8bd89f8 pop {r3, r4, r5, r6, r7, r8, fp, pc} + } + if(p == freep) + if((p = morecore(nunits)) == 0) + return 0; + bc4: e3a00000 mov r0, #0 + bc8: e8bd89f8 pop {r3, r4, r5, r6, r7, r8, fp, pc} + Header *p, *prevp; + uint nunits; + + nunits = (nbytes + sizeof(Header) - 1)/sizeof(Header) + 1; + if((prevp = freep) == 0){ + base.s.ptr = freep = prevp = &base; + bcc: e2850004 add r0, r5, #4 + bd0: e5850000 str r0, [r5] + base.s.size = 0; + bd4: e9850009 stmib r5, {r0, r3} + bd8: eaffffd3 b b2c <malloc+0x34> + bdc: 00000c34 .word 0x00000c34 + be0: 00000fff .word 0x00000fff