mem.lst

au1200下的boot代码

GAS LISTING /tmp/ccRMOXS7.s 			page 1


   1              		.section .mdebug.abi32
   2              		.previous
   3              		.section	.debug_abbrev,"",@progbits
   4              	$Ldebug_abbrev0:
   5              		.section	.debug_info,"",@progbits
   6              	$Ldebug_info0:
   7              		.section	.debug_line,"",@progbits
   8              	$Ldebug_line0:
   9 0000 0D010000 		.text
   9      02009600 
   9      00000101 
   9      FB0E0A00 
   9      01010101 
  10              	$Ltext0:
  11              		.align	2
  12              		.globl	copy_data_segment
  13              		.ent	copy_data_segment
  14              		.type	copy_data_segment, @function
  15              	copy_data_segment:
  16              	$LFB2:
  17              		.file 1 "/mnt/hgfs/boot/booter/source/mem.c"
   1:/mnt/hgfs/boot/booter/source/mem.c **** #include "example.h"
   2:/mnt/hgfs/boot/booter/source/mem.c **** 
   3:/mnt/hgfs/boot/booter/source/mem.c **** extern int _edata, _fbss, _end;
   4:/mnt/hgfs/boot/booter/source/mem.c **** extern int _data, _data_actual;
   5:/mnt/hgfs/boot/booter/source/mem.c **** 
   6:/mnt/hgfs/boot/booter/source/mem.c **** //Relocates Initialized Data Segment from FLASH to RAM
   7:/mnt/hgfs/boot/booter/source/mem.c **** void copy_data_segment()
   8:/mnt/hgfs/boot/booter/source/mem.c **** {
  18              		.loc 1 8 0
  19              		.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
  20              		.mask	0x00000000,0
  21              		.fmask	0x00000000,0
  22              		.set	noreorder
  23              		.set	nomacro
  24              		
   9:/mnt/hgfs/boot/booter/source/mem.c **** 	int *src = &_data_actual;	//End of text segment (start of data segment)
  25              		.loc 1 9 0
  26 0000 0000023C 		lui	$2,%hi(_data_actual)
  10:/mnt/hgfs/boot/booter/source/mem.c **** 	int *dst = &_data;			//beginning of data segment (in RAM)
  27              		.loc 1 10 0
  28 0004 0000033C 		lui	$3,%hi(_data)
  29              		.loc 1 9 0
  30 0008 00004524 		addiu	$5,$2,%lo(_data_actual)
  31              		.loc 1 10 0
  32 000c 00006424 		addiu	$4,$3,%lo(_data)
  11:/mnt/hgfs/boot/booter/source/mem.c **** 
  12:/mnt/hgfs/boot/booter/source/mem.c **** 	if(src != dst)
  13:/mnt/hgfs/boot/booter/source/mem.c **** 	{
  14:/mnt/hgfs/boot/booter/source/mem.c **** 		while(dst < &_edata)
  15:/mnt/hgfs/boot/booter/source/mem.c **** 			*dst++ = *src++;
  33              		.loc 1 15 0
  34              		.loc 1 12 0
  35 0010 0C00A410 		beq	$5,$4,$L8
  36 0014 0000023C 		lui	$2,%hi(_edata)
  37              	
  38              		.loc 1 15 0
GAS LISTING /tmp/ccRMOXS7.s 			page 2


  39 0018 00004224 		addiu	$2,$2,%lo(_edata)
  40 001c 2B188200 		sltu	$3,$4,$2
  41 0020 08006010 		beq	$3,$0,$L8
  42 0024 00000000 		nop
  43              	
  44 0028 21184000 		move	$3,$2
  45              	$L5:
  46 002c 0000A28C 		lw	$2,0($5)
  47 0030 000082AC 		sw	$2,0($4)
  48 0034 04008424 		addiu	$4,$4,4
  49 0038 2B108300 		sltu	$2,$4,$3
  50 003c FBFF4014 		bne	$2,$0,$L5
  51 0040 0400A524 		addiu	$5,$5,4
  52              	
  53              	$L8:
  54 0044 0800E003 		j	$31
  55 0048 00000000 		nop
  56              	
  57              		.set	macro
  58              		.set	reorder
  59              	$LFE2:
  60              		.end	copy_data_segment
  61              		.align	2
  62              		.globl	initialize_bss
  63              		.ent	initialize_bss
  64              		.type	initialize_bss, @function
  65              	initialize_bss:
  66              	$LFB3:
  16:/mnt/hgfs/boot/booter/source/mem.c **** 	}
  17:/mnt/hgfs/boot/booter/source/mem.c **** }
  18:/mnt/hgfs/boot/booter/source/mem.c **** 
  19:/mnt/hgfs/boot/booter/source/mem.c **** 
  20:/mnt/hgfs/boot/booter/source/mem.c **** void initialize_bss()
  21:/mnt/hgfs/boot/booter/source/mem.c **** {
  67              		.loc 1 21 0
  68              		.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
  69              		.mask	0x00000000,0
  70              		.fmask	0x00000000,0
  71              		.set	noreorder
  72              		.set	nomacro
  73              		
  22:/mnt/hgfs/boot/booter/source/mem.c **** 	int *start = &_fbss;
  74              		.loc 1 22 0
  75 004c 0000023C 		lui	$2,%hi(_fbss)
  23:/mnt/hgfs/boot/booter/source/mem.c **** 	int *end = &_end;
  76              		.loc 1 23 0
  77 0050 0000033C 		lui	$3,%hi(_end)
  78              		.loc 1 22 0
  79 0054 00004424 		addiu	$4,$2,%lo(_fbss)
  80              		.loc 1 23 0
  81 0058 1A000008 		j	$L15
  82 005c 00006324 		addiu	$3,$3,%lo(_end)
  83              	
  84              	$L16:
  24:/mnt/hgfs/boot/booter/source/mem.c **** 
  25:/mnt/hgfs/boot/booter/source/mem.c **** 	while(start < end)
  26:/mnt/hgfs/boot/booter/source/mem.c **** 		*start++ = 0;
GAS LISTING /tmp/ccRMOXS7.s 			page 3


  85              		.loc 1 26 0
  86 0060 000080AC 		sw	$0,0($4)
  87 0064 04008424 		addiu	$4,$4,4
  88              	$L15:
  89 0068 2B108300 		sltu	$2,$4,$3
  90 006c FCFF4014 		bne	$2,$0,$L16
  91 0070 00000000 		nop
  92              	
  93 0074 0800E003 		j	$31
  94 0078 00000000 		nop
  95              	
  96              		.set	macro
  97              		.set	reorder
  98              	$LFE3:
  99              		.end	initialize_bss
 100              		.align	2
 101              		.globl	compare_memory
 102              		.ent	compare_memory
 103              		.type	compare_memory, @function
 104              	compare_memory:
 105              	$LFB4:
  27:/mnt/hgfs/boot/booter/source/mem.c **** }
  28:/mnt/hgfs/boot/booter/source/mem.c **** 
  29:/mnt/hgfs/boot/booter/source/mem.c **** int compare_memory(char* data1, char* data2, int bytes)
  30:/mnt/hgfs/boot/booter/source/mem.c **** {
 106              		.loc 1 30 0
 107              		.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
 108              		.mask	0x00000000,0
 109              		.fmask	0x00000000,0
 110              		.set	noreorder
 111              		.set	nomacro
 112              		
 113              		.loc 1 30 0
 114 007c 21488000 		move	$9,$4
 115 0080 2140A000 		move	$8,$5
  31:/mnt/hgfs/boot/booter/source/mem.c **** 	int offset;
  32:/mnt/hgfs/boot/booter/source/mem.c **** 	//DPRINTF("Compare: %X, %X, %d\n", data1, data2, bytes);
  33:/mnt/hgfs/boot/booter/source/mem.c **** 	for(offset = 0; offset < bytes; ++offset)
 116              		.loc 1 33 0
 117 0084 0A00C018 		blez	$6,$L24
 118 0088 21380000 		move	$7,$0
 119              	
 120              	$L22:
  34:/mnt/hgfs/boot/booter/source/mem.c **** 	{
  35:/mnt/hgfs/boot/booter/source/mem.c **** 		if(data1[offset] != data2[offset])
 121              		.loc 1 35 0
 122 008c 21102701 		addu	$2,$9,$7
 123 0090 21180701 		addu	$3,$8,$7
 124 0094 00004580 		lb	$5,0($2)
 125 0098 00006480 		lb	$4,0($3)
 126              		.loc 1 33 0
 127 009c 0100E724 		addiu	$7,$7,1
 128              		.loc 1 35 0
 129 00a0 0500A414 		bne	$5,$4,$L25
 130 00a4 2A10E600 		slt	$2,$7,$6
 131              	
 132              		.loc 1 33 0
GAS LISTING /tmp/ccRMOXS7.s 			page 4


 133 00a8 F8FF4014 		bne	$2,$0,$L22
 134 00ac 00000000 		nop
 135              	
 136              	$L24:
  36:/mnt/hgfs/boot/booter/source/mem.c **** 		{
  37:/mnt/hgfs/boot/booter/source/mem.c ****                   DPRINTF("Compare Error, Offset: %d, %X != %X (%02X != %02X)\n", offset, &data1[of
  38:/mnt/hgfs/boot/booter/source/mem.c **** 			return 0;
  39:/mnt/hgfs/boot/booter/source/mem.c **** 		}
  40:/mnt/hgfs/boot/booter/source/mem.c **** 	}
  41:/mnt/hgfs/boot/booter/source/mem.c **** 
  42:/mnt/hgfs/boot/booter/source/mem.c **** 	return 1;
 137              		.loc 1 42 0
  43:/mnt/hgfs/boot/booter/source/mem.c **** }
 138              		.loc 1 43 0
 139 00b0 0800E003 		j	$31
 140 00b4 01000224 		li	$2,1			# 0x1
 141              	
 142              	$L25:
 143              		.loc 1 38 0
 144 00b8 0800E003 		j	$31
 145 00bc 21100000 		move	$2,$0
 146              	
 147              		.set	macro
 148              		.set	reorder
 149              	$LFE4:
 150              		.end	compare_memory
 151              		.section	.rodata.str1.4,"aMS",@progbits,1
 152              		.align	2
 153              	$LC1:
 154 0000 25303258 		.ascii	"%02X \000"
 154      2000
 155 0006 0000     		.align	2
 156              	$LC4:
 157 0008 0A00     		.ascii	"\n\000"
 158 000a 0000     		.align	2
 159              	$LC0:
 160 000c 25303858 		.ascii	"%08X: \000"
 160      3A2000
 161 0013 00       		.align	2
 162              	$LC2:
 163 0014 256300   		.ascii	"%c\000"
 164 0017 00       		.align	2
 165              	$LC3:
 166 0018 2E00     		.ascii	".\000"
 167 001a 0000     		.text
 168              		.align	2
 169              		.globl	dump_memory
 170              		.ent	dump_memory
 171              		.type	dump_memory, @function
 172              	dump_memory:
 173              	$LFB5:
  44:/mnt/hgfs/boot/booter/source/mem.c **** 
  45:/mnt/hgfs/boot/booter/source/mem.c **** void dump_memory(char* src, int bytes)
  46:/mnt/hgfs/boot/booter/source/mem.c **** {
 174              		.loc 1 46 0
 175              		.frame	$sp,56,$31		# vars= 0, regs= 10/0, args= 16, gp= 0
 176              		.mask	0xc0ff0000,-4
GAS LISTING /tmp/ccRMOXS7.s 			page 5


 177              		.fmask	0x00000000,0
 178              		.set	noreorder
 179              		.set	nomacro
 180              		
 181 00c0 C8FFBD27 		addiu	$sp,$sp,-56
 182              	$LCFI0:
 183 00c4 2C00B7AF 		sw	$23,44($sp)
 184              	$LCFI1:
 185 00c8 2800B6AF 		sw	$22,40($sp)
 186              	$LCFI2:
 187 00cc 3400BFAF 		sw	$31,52($sp)
 188              	$LCFI3:
 189 00d0 3000BEAF 		sw	$fp,48($sp)
 190              	$LCFI4:
 191 00d4 2400B5AF 		sw	$21,36($sp)
 192              	$LCFI5:
 193 00d8 2000B4AF 		sw	$20,32($sp)
 194              	$LCFI6:
 195 00dc 1C00B3AF 		sw	$19,28($sp)
 196              	$LCFI7:
 197 00e0 1800B2AF 		sw	$18,24($sp)
 198              	$LCFI8:
 199 00e4 1400B1AF 		sw	$17,20($sp)
 200              	$LCFI9:
 201 00e8 1000B0AF 		sw	$16,16($sp)
 202              	$LCFI10:
 203              		.loc 1 46 0
 204 00ec 21B8A000 		move	$23,$5
 205 00f0 3800A4AF 		sw	$4,56($sp)
  47:/mnt/hgfs/boot/booter/source/mem.c **** 	int i, j;
  48:/mnt/hgfs/boot/booter/source/mem.c **** 	int found = 0;
  49:/mnt/hgfs/boot/booter/source/mem.c **** 	for(i = 0; i < bytes; i+=16)
 206              		.loc 1 49 0
 207 00f4 2700A018 		blez	$5,$L44
 208 00f8 21B00000 		move	$22,$0
 209              	
 210 00fc 0000143C 		lui	$20,%hi($LC1)
 211 0100 00001E3C 		lui	$fp,%hi($LC4)
  50:/mnt/hgfs/boot/booter/source/mem.c **** 	{
  51:/mnt/hgfs/boot/booter/source/mem.c **** 		printf("%08X: ", &src[i]);
 212              		.loc 1 51 0
 213 0104 3800A28F 		lw	$2,56($sp)
 214              	$L52:
  52:/mnt/hgfs/boot/booter/source/mem.c **** 			
  53:/mnt/hgfs/boot/booter/source/mem.c **** 		for(j = 0; j < 16; ++j)
 215              		.loc 1 53 0
 216 0108 21800000 		move	$16,$0
 217              		.loc 1 51 0
 218 010c 21885600 		addu	$17,$2,$22
 219 0110 0000023C 		lui	$2,%hi($LC0)
 220 0114 00004424 		addiu	$4,$2,%lo($LC0)
 221 0118 0000000C 		jal	printf
 222 011c 21282002 		move	$5,$17
 223              	
 224              	$L33:
  54:/mnt/hgfs/boot/booter/source/mem.c **** 		{
  55:/mnt/hgfs/boot/booter/source/mem.c **** 			printf("%02X ", src[i+j] & 0x0FF);
GAS LISTING /tmp/ccRMOXS7.s 			page 6


 225              		.loc 1 55 0
 226 0120 21103002 		addu	$2,$17,$16
 227 0124 00004590 		lbu	$5,0($2)
 228              		.loc 1 53 0
 229 0128 01001026 		addiu	$16,$16,1
 230              		.loc 1 55 0
 231 012c 0000000C 		jal	printf
 232 0130 00008426 		addiu	$4,$20,%lo($LC1)
 233              	
 234              		.loc 1 53 0
 235 0134 1000022A 		slt	$2,$16,16
 236 0138 F9FF4014 		bne	$2,$0,$L33
 237 013c 7F001324 		li	$19,127			# 0x7f
 238              	
  56:/mnt/hgfs/boot/booter/source/mem.c **** 		}
  57:/mnt/hgfs/boot/booter/source/mem.c **** 		
  58:/mnt/hgfs/boot/booter/source/mem.c **** 		for(j = 0; j < 16; ++j)
 239              		.loc 1 58 0
 240 0140 21800000 		move	$16,$0
 241 0144 0000153C 		lui	$21,%hi($LC2)
 242 0148 0000123C 		lui	$18,%hi($LC3)
  59:/mnt/hgfs/boot/booter/source/mem.c **** 		{
  60:/mnt/hgfs/boot/booter/source/mem.c **** 			if(src[i+j] < 127 && src[i+j] > 31)
 243              		.loc 1 60 0
 244 014c 21103002 		addu	$2,$17,$16
 245              	$L51:
 246 0150 00004580 		lb	$5,0($2)
  61:/mnt/hgfs/boot/booter/source/mem.c **** 			{
  62:/mnt/hgfs/boot/booter/source/mem.c **** 				printf("%c", src[i+j]);
  63:/mnt/hgfs/boot/booter/source/mem.c **** 				if(src[i+j] == 'H')
  64:/mnt/hgfs/boot/booter/source/mem.c **** 				{
  65:/mnt/hgfs/boot/booter/source/mem.c **** 					if(src[i+j+1] == 'E' && src[i+j+2] == 'L' && src[i+j+3] == 'L' && src[i+j+4] == 'O')
  66:/mnt/hgfs/boot/booter/source/mem.c **** 					{
  67:/mnt/hgfs/boot/booter/source/mem.c **** 						found = 1;
  68:/mnt/hgfs/boot/booter/source/mem.c **** 					}
  69:/mnt/hgfs/boot/booter/source/mem.c **** 				}
  70:/mnt/hgfs/boot/booter/source/mem.c **** 			}
  71:/mnt/hgfs/boot/booter/source/mem.c **** 			else
  72:/mnt/hgfs/boot/booter/source/mem.c **** 				printf(".");
 247              		.loc 1 72 0
 248 0154 00004426 		addiu	$4,$18,%lo($LC3)
 249              		.loc 1 60 0
 250 0158 0300B310 		beq	$5,$19,$L37
 251 015c 2000A228 		slt	$2,$5,32
 252              	
 253 0160 18004010 		beq	$2,$0,$L49
 254 0164 00000000 		nop
 255              	
 256              	$L37:
 257              		.loc 1 58 0
 258              		.loc 1 72 0
 259 0168 0000000C 		jal	printf
 260 016c 01001026 		addiu	$16,$16,1
 261              	
 262              		.loc 1 58 0
 263 0170 1000022A 		slt	$2,$16,16
 264              		.loc 1 60 0
GAS LISTING /tmp/ccRMOXS7.s 			page 7


 265              		.loc 1 58 0
 266 0174 F6FF4014 		bne	$2,$0,$L51
 267 0178 21103002 		addu	$2,$17,$16
 268              	
 269              		.loc 1 49 0
 270 017c 1000D626 		addiu	$22,$22,16
  73:/mnt/hgfs/boot/booter/source/mem.c **** 		}
  74:/mnt/hgfs/boot/booter/source/mem.c **** 		
  75:/mnt/hgfs/boot/booter/source/mem.c **** 		printf("\n"); 
 271              		.loc 1 75 0
 272 0180 0000000C 		jal	printf
 273 0184 0000C427 		addiu	$4,$fp,%lo($LC4)
 274              	
 275              		.loc 1 49 0
 276 0188 2A10D702 		slt	$2,$22,$23
 277              		.loc 1 51 0
 278              		.loc 1 49 0
 279 018c DEFF4014 		bne	$2,$0,$L52
 280 0190 3800A28F 		lw	$2,56($sp)
 281              	
 282              	$L44:
 283 0194 3400BF8F 		lw	$31,52($sp)
 284              	$L50:
 285 0198 3000BE8F 		lw	$fp,48($sp)
 286 019c 2C00B78F 		lw	$23,44($sp)
 287 01a0 2800B68F 		lw	$22,40($sp)
 288 01a4 2400B58F 		lw	$21,36($sp)
 289 01a8 2000B48F 		lw	$20,32($sp)
 290 01ac 1C00B38F 		lw	$19,28($sp)
 291 01b0 1800B28F 		lw	$18,24($sp)
 292 01b4 1400B18F 		lw	$17,20($sp)
 293 01b8 1000B08F 		lw	$16,16($sp)
 294 01bc 0800E003 		j	$31
 295 01c0 3800BD27 		addiu	$sp,$sp,56
 296              	
 297              	$L49:
 298              		.loc 1 62 0
 299 01c4 0000A426 		addiu	$4,$21,%lo($LC2)
 300              		.loc 1 58 0
 301              		.loc 1 62 0