delay.lst

au1200下的boot代码

GAS LISTING /tmp/ccqM27O3.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 F8000000 		.text
   9      0200A400 
   9      00000101 
   9      FB0E0A00 
   9      01010101 
  10              	$Ltext0:
  11              		.align	2
  12              		.globl	usdelay
  13              		.ent	usdelay
  14              		.type	usdelay, @function
  15              	usdelay:
  16              	$LFB2:
  17              		.file 1 "/mnt/hgfs/boot/booter/source/delay.c"
   1:/mnt/hgfs/boot/booter/source/delay.c **** /*
   2:/mnt/hgfs/boot/booter/source/delay.c ****  * Busy delay loop
   3:/mnt/hgfs/boot/booter/source/delay.c ****  */
   4:/mnt/hgfs/boot/booter/source/delay.c **** 
   5:/mnt/hgfs/boot/booter/source/delay.c **** #include "example.h"
   6:/mnt/hgfs/boot/booter/source/delay.c **** 
   7:/mnt/hgfs/boot/booter/source/delay.c **** static AU1X00_SYS * const sys = (AU1X00_SYS *)KSEG1(SYS_PHYS_ADDR);
   8:/mnt/hgfs/boot/booter/source/delay.c **** 
   9:/mnt/hgfs/boot/booter/source/delay.c **** /********************************************************************/
  10:/mnt/hgfs/boot/booter/source/delay.c **** void
  11:/mnt/hgfs/boot/booter/source/delay.c **** usdelay(int us)
  12:/mnt/hgfs/boot/booter/source/delay.c **** {		
  18              		.loc 1 12 0
  19              		.frame	$sp,40,$31		# vars= 0, regs= 5/0, args= 16, gp= 0
  20              		.mask	0x800f0000,-8
  21              		.fmask	0x00000000,0
  22              		.set	noreorder
  23              		.set	nomacro
  24              		
  25 0000 D8FFBD27 		addiu	$sp,$sp,-40
  26              	$LCFI0:
  27 0004 1C00B3AF 		sw	$19,28($sp)
  28              	$LCFI1:
  29 0008 1400B1AF 		sw	$17,20($sp)
  30              	$LCFI2:
  31 000c 2000BFAF 		sw	$31,32($sp)
  32              	$LCFI3:
  33 0010 1800B2AF 		sw	$18,24($sp)
  34              	$LCFI4:
  35 0014 1000B0AF 		sw	$16,16($sp)
  36              	$LCFI5:
  13:/mnt/hgfs/boot/booter/source/delay.c **** 	/*
  14:/mnt/hgfs/boot/booter/source/delay.c **** 	 * Use CP0 Count which counts 1:1 with core frequency.
  15:/mnt/hgfs/boot/booter/source/delay.c **** 	 */
  16:/mnt/hgfs/boot/booter/source/delay.c **** 	uint32 now, later, cpupll;
  17:/mnt/hgfs/boot/booter/source/delay.c **** 	int i;
GAS LISTING /tmp/ccqM27O3.s 			page 2


  18:/mnt/hgfs/boot/booter/source/delay.c **** 
  19:/mnt/hgfs/boot/booter/source/delay.c **** 	us /= 2;
  20:/mnt/hgfs/boot/booter/source/delay.c **** 
  21:/mnt/hgfs/boot/booter/source/delay.c **** 	cpupll = sys->cpupll & 0x3F;
  37              		.loc 1 21 0
  38 0018 90B1023C 		li	$2,-1315962880			# 0xffffffffb1900000
  39 001c 6000458C 		lw	$5,96($2)
  40              		.loc 1 19 0
  41 0020 C21F0400 		srl	$3,$4,31
  42 0024 21186400 		addu	$3,$3,$4
  43 0028 43980300 		sra	$19,$3,1
  44              		.loc 1 21 0
  45 002c 3F00A530 		andi	$5,$5,0x3f
  22:/mnt/hgfs/boot/booter/source/delay.c **** 
  23:/mnt/hgfs/boot/booter/source/delay.c **** 	for (i = 0; i < us; ++i)
  46              		.loc 1 23 0
  47 0030 1800601A 		blez	$19,$L15
  48 0034 21880000 		move	$17,$0
  49              	
  50 0038 B700023C 		li	$2,11993088			# 0xb70000
  51 003c 001B4234 		ori	$2,$2,0x1b00
  52 0040 0210A270 		mul	$2,$5,$2
  53 0044 1B43033C 		li	$3,1125842944			# 0x431b0000
  54 0048 83DE6334 		ori	$3,$3,0xde83
  55 004c 19004300 		multu	$2,$3
  56 0050 10100000 		mfhi	$2
  57 0054 82940200 		srl	$18,$2,18
  58              	$L13:
  59              	$LBB2:
  24:/mnt/hgfs/boot/booter/source/delay.c **** 	{
  25:/mnt/hgfs/boot/booter/source/delay.c **** 		now = cp0RdCount();
  60              		.loc 1 25 0
  61 0058 0000000C 		jal	cp0RdCount
  62 005c 00000000 		nop
  63              	
  26:/mnt/hgfs/boot/booter/source/delay.c **** 		later = now + ( (12000000 * cpupll) / 1000000);
  64              		.loc 1 26 0
  65 0060 21804202 		addu	$16,$18,$2
  27:/mnt/hgfs/boot/booter/source/delay.c **** 
  28:/mnt/hgfs/boot/booter/source/delay.c **** 		if (now < later)
  66              		.loc 1 28 0
  67 0064 2B105000 		sltu	$2,$2,$16
  68 0068 11004010 		beq	$2,$0,$L9
  69 006c 00000000 		nop
  70              	
  71              	$L6:
  29:/mnt/hgfs/boot/booter/source/delay.c **** 		{
  30:/mnt/hgfs/boot/booter/source/delay.c **** 			while (cp0RdCount() < later)
  72              		.loc 1 30 0
  73 0070 0000000C 		jal	cp0RdCount
  74 0074 00000000 		nop
  75              	
  76 0078 2B105000 		sltu	$2,$2,$16
  77 007c FCFF4014 		bne	$2,$0,$L6
  78 0080 00000000 		nop
  79              	
  80              	$L4:
GAS LISTING /tmp/ccqM27O3.s 			page 3


  81              	$LBE2:
  82              		.loc 1 23 0
  83 0084 01003126 		addiu	$17,$17,1
  84              	$L18:
  85 0088 2A103302 		slt	$2,$17,$19
  86 008c F2FF4014 		bne	$2,$0,$L13
  87 0090 00000000 		nop
  88              	
  89              	$L15:
  90 0094 2000BF8F 		lw	$31,32($sp)
  91 0098 1C00B38F 		lw	$19,28($sp)
  92 009c 1800B28F 		lw	$18,24($sp)
  93 00a0 1400B18F 		lw	$17,20($sp)
  94 00a4 1000B08F 		lw	$16,16($sp)
  95 00a8 0800E003 		j	$31
  96 00ac 2800BD27 		addiu	$sp,$sp,40
  97              	
  98              	$L9:
  99              	$LBB3:
  31:/mnt/hgfs/boot/booter/source/delay.c **** 				;
  32:/mnt/hgfs/boot/booter/source/delay.c **** 		}
  33:/mnt/hgfs/boot/booter/source/delay.c **** 		else
  34:/mnt/hgfs/boot/booter/source/delay.c **** 		{
  35:/mnt/hgfs/boot/booter/source/delay.c **** 			/* Count must rollover */
  36:/mnt/hgfs/boot/booter/source/delay.c **** 			while (cp0RdCount() > later)
 100              		.loc 1 36 0
 101 00b0 0000000C 		jal	cp0RdCount
 102 00b4 00000000 		nop
 103              	
 104 00b8 2B100202 		sltu	$2,$16,$2
 105 00bc FCFF4014 		bne	$2,$0,$L9
 106 00c0 00000000 		nop
 107              	
 108              	$L11:
  37:/mnt/hgfs/boot/booter/source/delay.c **** 				;
  38:/mnt/hgfs/boot/booter/source/delay.c **** 
  39:/mnt/hgfs/boot/booter/source/delay.c **** 			while (cp0RdCount() < later)
 109              		.loc 1 39 0
 110 00c4 0000000C 		jal	cp0RdCount
 111 00c8 00000000 		nop
 112              	
 113 00cc 2B105000 		sltu	$2,$2,$16
 114 00d0 ECFF4010 		beq	$2,$0,$L4
 115 00d4 00000000 		nop
 116              	
 117 00d8 0000000C 		jal	cp0RdCount
 118 00dc 00000000 		nop
 119              	
 120 00e0 2B105000 		sltu	$2,$2,$16
 121 00e4 F7FF4014 		bne	$2,$0,$L11
 122 00e8 00000000 		nop
 123              	
 124              		.loc 1 23 0
 125 00ec 22000008 		j	$L18
 126 00f0 01003126 		addiu	$17,$17,1
 127              	
 128              	$LBE3:
GAS LISTING /tmp/ccqM27O3.s 			page 4


 129              		.set	macro
 130              		.set	reorder
 131              	$LFE2:
 132              		.end	usdelay
 133              		.align	2
 134              		.globl	msdelay
 135              		.ent	msdelay
 136              		.type	msdelay, @function
 137              	msdelay:
 138              	$LFB3:
  40:/mnt/hgfs/boot/booter/source/delay.c **** 				;
  41:/mnt/hgfs/boot/booter/source/delay.c **** 		}
  42:/mnt/hgfs/boot/booter/source/delay.c **** 	}
  43:/mnt/hgfs/boot/booter/source/delay.c **** }
  44:/mnt/hgfs/boot/booter/source/delay.c **** 
  45:/mnt/hgfs/boot/booter/source/delay.c **** void
  46:/mnt/hgfs/boot/booter/source/delay.c **** msdelay (int ms)
  47:/mnt/hgfs/boot/booter/source/delay.c **** {
 139              		.loc 1 47 0
 140              		.frame	$sp,40,$31		# vars= 0, regs= 5/0, args= 16, gp= 0
 141              		.mask	0x800f0000,-8
 142              		.fmask	0x00000000,0
 143              		.set	noreorder
 144              		.set	nomacro
 145              		
 146 00f4 D8FFBD27 		addiu	$sp,$sp,-40
 147              	$LCFI6:
 148 00f8 1C00B3AF 		sw	$19,28($sp)
 149              	$LCFI7:
 150 00fc 1400B1AF 		sw	$17,20($sp)
 151              	$LCFI8:
 152 0100 2000BFAF 		sw	$31,32($sp)
 153              	$LCFI9:
 154 0104 1800B2AF 		sw	$18,24($sp)
 155              	$LCFI10:
 156 0108 1000B0AF 		sw	$16,16($sp)
 157              	$LCFI11:
  48:/mnt/hgfs/boot/booter/source/delay.c **** 
  49:/mnt/hgfs/boot/booter/source/delay.c **** 	/*
  50:/mnt/hgfs/boot/booter/source/delay.c **** 	 * Use CP0 Count which counts 1:1 with core frequency.
  51:/mnt/hgfs/boot/booter/source/delay.c **** 	 */
  52:/mnt/hgfs/boot/booter/source/delay.c **** 	uint32 now, later, cpupll;
  53:/mnt/hgfs/boot/booter/source/delay.c **** 	int i;
  54:/mnt/hgfs/boot/booter/source/delay.c **** 
  55:/mnt/hgfs/boot/booter/source/delay.c **** 	cpupll = sys->cpupll & 0x3F;
 158              		.loc 1 55 0
 159 010c 90B1023C 		li	$2,-1315962880			# 0xffffffffb1900000
 160 0110 6000438C 		lw	$3,96($2)
 161              		.loc 1 47 0
 162 0114 21988000 		move	$19,$4
  56:/mnt/hgfs/boot/booter/source/delay.c **** 
  57:/mnt/hgfs/boot/booter/source/delay.c **** 	for (i = 0; i < ms; ++i)
 163              		.loc 1 57 0
 164 0118 21880000 		move	$17,$0
 165              		.loc 1 55 0
 166              		.loc 1 57 0
 167 011c 18008018 		blez	$4,$L33
GAS LISTING /tmp/ccqM27O3.s 			page 5


 168 0120 3F006330 		andi	$3,$3,0x3f
 169              	
 170 0124 B700023C 		li	$2,11993088			# 0xb70000
 171 0128 001B4234 		ori	$2,$2,0x1b00
 172 012c 02106270 		mul	$2,$3,$2
 173 0130 6210033C 		li	$3,274857984			# 0x10620000
 174 0134 D34D6334 		ori	$3,$3,0x4dd3
 175 0138 19004300 		multu	$2,$3
 176 013c 10100000 		mfhi	$2
 177 0140 82910200 		srl	$18,$2,6
 178              	$L31:
 179              	$LBB4:
  58:/mnt/hgfs/boot/booter/source/delay.c **** 	{
  59:/mnt/hgfs/boot/booter/source/delay.c **** 		now = cp0RdCount();
 180              		.loc 1 59 0
 181 0144 0000000C 		jal	cp0RdCount
 182 0148 00000000 		nop
 183              	
  60:/mnt/hgfs/boot/booter/source/delay.c **** 		later = now + ((12000000 * cpupll) / 1000);
 184              		.loc 1 60 0
 185 014c 21804202 		addu	$16,$18,$2
  61:/mnt/hgfs/boot/booter/source/delay.c **** 
  62:/mnt/hgfs/boot/booter/source/delay.c **** 		if (now < later)
 186              		.loc 1 62 0
 187 0150 2B105000 		sltu	$2,$2,$16
 188 0154 11004010 		beq	$2,$0,$L27
 189 0158 00000000 		nop
 190              	
 191              	$L24:
  63:/mnt/hgfs/boot/booter/source/delay.c **** 		{
  64:/mnt/hgfs/boot/booter/source/delay.c **** 			while (cp0RdCount() < later)
 192              		.loc 1 64 0
 193 015c 0000000C 		jal	cp0RdCount
 194 0160 00000000 		nop
 195              	
 196 0164 2B105000 		sltu	$2,$2,$16
 197 0168 FCFF4014 		bne	$2,$0,$L24
 198 016c 00000000 		nop
 199              	
 200              	$L22:
 201              	$LBE4:
 202              		.loc 1 57 0
 203 0170 01003126 		addiu	$17,$17,1
 204              	$L35:
 205 0174 2A103302 		slt	$2,$17,$19
 206 0178 F2FF4014 		bne	$2,$0,$L31
 207 017c 00000000 		nop
 208              	
 209              	$L33:
 210 0180 2000BF8F 		lw	$31,32($sp)
 211 0184 1C00B38F 		lw	$19,28($sp)
 212 0188 1800B28F 		lw	$18,24($sp)
 213 018c 1400B18F 		lw	$17,20($sp)
 214 0190 1000B08F 		lw	$16,16($sp)
 215 0194 0800E003 		j	$31
 216 0198 2800BD27 		addiu	$sp,$sp,40
 217              	
GAS LISTING /tmp/ccqM27O3.s 			page 6


 218              	$L27:
 219              	$LBB5:
  65:/mnt/hgfs/boot/booter/source/delay.c **** 				;
  66:/mnt/hgfs/boot/booter/source/delay.c **** 		}
  67:/mnt/hgfs/boot/booter/source/delay.c **** 		else
  68:/mnt/hgfs/boot/booter/source/delay.c **** 		{
  69:/mnt/hgfs/boot/booter/source/delay.c **** 			/* Count must rollover */
  70:/mnt/hgfs/boot/booter/source/delay.c **** 			while (cp0RdCount() > later)
 220              		.loc 1 70 0
 221 019c 0000000C 		jal	cp0RdCount
 222 01a0 00000000 		nop
 223              	
 224 01a4 2B100202 		sltu	$2,$16,$2
 225 01a8 FCFF4014 		bne	$2,$0,$L27
 226 01ac 00000000 		nop
 227              	
 228              	$L29:
  71:/mnt/hgfs/boot/booter/source/delay.c **** 				;
  72:/mnt/hgfs/boot/booter/source/delay.c **** 
  73:/mnt/hgfs/boot/booter/source/delay.c **** 			while (cp0RdCount() < later)
 229              		.loc 1 73 0
 230 01b0 0000000C 		jal	cp0RdCount
 231 01b4 00000000 		nop
 232              	
 233 01b8 2B105000 		sltu	$2,$2,$16
 234 01bc ECFF4010 		beq	$2,$0,$L22
 235 01c0 00000000 		nop
 236              	
 237 01c4 0000000C 		jal	cp0RdCount
 238 01c8 00000000 		nop
 239              	
 240 01cc 2B105000 		sltu	$2,$2,$16
 241 01d0 F7FF4014 		bne	$2,$0,$L29
 242 01d4 00000000 		nop
 243              	
 244              		.loc 1 57 0
 245 01d8 5D000008 		j	$L35
 246 01dc 01003126 		addiu	$17,$17,1
 247              	
 248              	$LBE5:
 249              		.set	macro
 250              		.set	reorder
 251              	$LFE3:
 252              		.end	msdelay
 253              		.section	.debug_frame,"",@progbits
 254              	$Lframe0:
 255 0000 0C000000 		.4byte	$LECIE0-$LSCIE0
 256              	$LSCIE0:
 257 0004 FFFFFFFF 		.4byte	0xffffffff
 258 0008 01       		.byte	0x1
 259 0009 00       		.ascii	"\000"
 260 000a 01       		.uleb128 0x1
 261 000b 04       		.sleb128 4
 262 000c 1F       		.byte	0x1f
 263 000d 0C       		.byte	0xc
 264 000e 1D       		.uleb128 0x1d
 265 000f 00       		.uleb128 0x0
GAS LISTING /tmp/ccqM27O3.s 			page 7


 266              		.align	2
 267              	$LECIE0:
 268              	$LSFDE0:
 269 0010 20000000 		.4byte	$LEFDE0-$LASFDE0
 270              	$LASFDE0:
 271 0014 00000000 		.4byte	$Lframe0
 272 0018 00000000 		.4byte	$LFB2
 273 001c F4000000 		.4byte	$LFE2-$LFB2
 274 0020 44       		.byte	0x4
 275              		.4byte	$LCFI0-$LFB2
 276 0021 0E       		.byte	0xe
 277 0022 28       		.uleb128 0x28
 278 0023 54       		.byte	0x4
 279              		.4byte	$LCFI5-$LCFI0