uart.lst

au1200下的boot代码

 101              	
 102              		.loc 1 426 0
 103 00ac 64000424 		li	$4,100			# 0x64
 104              		.loc 1 425 0
 105 00b0 000130AE 		sw	$16,256($17)
 106              		.loc 1 426 0
 107 00b4 0000000C 		jal	msdelay
 108 00b8 00000000 		nop
 109              	
 110              		.loc 1 435 0
 111 00bc 0000448E 		lw	$4,%lo(sys)($18)
 112              		.loc 1 430 0
 113 00c0 06000224 		li	$2,6			# 0x6
 114              		.loc 1 428 0
 115 00c4 080020AE 		sw	$0,8($17)
 116              		.loc 1 430 0
 117 00c8 100022AE 		sw	$2,16($17)
 118              		.loc 1 433 0
 119 00cc 140030AE 		sw	$16,20($17)
 120              		.loc 1 435 0
 121 00d0 6000858C 		lw	$5,96($4)
 122 00d4 3C00838C 		lw	$3,60($4)
 123 00d8 B700023C 		li	$2,11993088			# 0xb70000
 124 00dc 001B4234 		ori	$2,$2,0x1b00
 125 00e0 03006330 		andi	$3,$3,0x3
 126 00e4 40190300 		sll	$3,$3,5
GAS LISTING /tmp/cc4XVykA.s 			page 11


 127 00e8 3F00A530 		andi	$5,$5,0x3f
 128 00ec 40006324 		addiu	$3,$3,64
 129 00f0 0228A270 		mul	$5,$5,$2
 130              		.loc 1 437 0
 131 00f4 64000424 		li	$4,100			# 0x64
 132              		.loc 1 435 0
 133 00f8 02187370 		mul	$3,$3,$19
 134 00fc 1B00A300 		divu	$0,$5,$3
 135 0100 02006014 		bne	$3,$0,1f
 136 0104 00000000 		nop
 137 0108 0D000700 		break	7
 138              	1:
 139 010c 12280000 		mflo	$5
 140              		.loc 1 436 0
 141 0110 280025AE 		sw	$5,40($17)
 142              		.loc 1 437 0
 143 0114 0000000C 		jal	msdelay
 144 0118 00000000 		nop
 145              	
 146              		.loc 1 439 0
 147 011c 10B1023C 		li	$2,-1324351488			# 0xffffffffb1100000
 148 0120 00014234 		ori	$2,$2,0x100
 149 0124 0000448C 		lw	$4,0($2)
 150 0128 00AF033C 		li	$3,-1358954496			# 0xffffffffaf000000
 151 012c 000064AC 		sw	$4,0($3)
 152              		.loc 1 440 0
 153 0130 2000BF8F 		lw	$31,32($sp)
 154              	$L8:
 155 0134 1C00B38F 		lw	$19,28($sp)
 156 0138 1800B28F 		lw	$18,24($sp)
 157 013c 1400B18F 		lw	$17,20($sp)
 158 0140 1000B08F 		lw	$16,16($sp)
 159 0144 0800E003 		j	$31
 160 0148 2800BD27 		addiu	$sp,$sp,40
 161              	
 162              		.set	macro
 163              		.set	reorder
 164              	$LFE2:
 165              		.end	uartInit
 166              		.align	2
 167              		.globl	uartPutChar
 168              		.ent	uartPutChar
 169              		.type	uartPutChar, @function
 170              	uartPutChar:
 171              	$LFB3:
 441:/mnt/hgfs/boot/booter/source/uart.c **** 
 442:/mnt/hgfs/boot/booter/source/uart.c **** /********************************************************************/
 443:/mnt/hgfs/boot/booter/source/uart.c **** void
 444:/mnt/hgfs/boot/booter/source/uart.c **** uartPutChar (int uartNumber, int ch)
 445:/mnt/hgfs/boot/booter/source/uart.c **** {
 172              		.loc 1 445 0
 173              		.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
 174              		.mask	0x00000000,0
 175              		.fmask	0x00000000,0
 176              		.set	noreorder
 177              		.set	nomacro
 178              		
GAS LISTING /tmp/cc4XVykA.s 			page 12


 446:/mnt/hgfs/boot/booter/source/uart.c **** 	AU1000_UART *uart;
 447:/mnt/hgfs/boot/booter/source/uart.c **** 
 448:/mnt/hgfs/boot/booter/source/uart.c **** 	switch (uartNumber)
 449:/mnt/hgfs/boot/booter/source/uart.c **** 	{
 450:/mnt/hgfs/boot/booter/source/uart.c **** #ifdef UART0_PHYS_ADDR
 451:/mnt/hgfs/boot/booter/source/uart.c **** 		case 0: uart = (AU1000_UART *)KSEG1(UART0_PHYS_ADDR); break;
 179              		.loc 1 451 0
 180              		.loc 1 448 0
 181 014c 07008010 		beq	$4,$0,$L14
 182 0150 10B1033C 		li	$3,-1324351488			# 0xffffffffb1100000
 183              	
 184 0154 01000224 		li	$2,1			# 0x1
 185 0158 03008210 		beq	$4,$2,$L16
 186 015c 00000000 		nop
 187              	
 188 0160 0800E003 		j	$31
 189 0164 00000000 		nop
 190              	
 191              	$L16:
 452:/mnt/hgfs/boot/booter/source/uart.c **** #endif
 453:/mnt/hgfs/boot/booter/source/uart.c **** #ifdef UART1_PHYS_ADDR
 454:/mnt/hgfs/boot/booter/source/uart.c **** 		case 1: uart = (AU1000_UART *)KSEG1(UART1_PHYS_ADDR); break;
 192              		.loc 1 454 0
 193 0168 20B1033C 		li	$3,-1323302912			# 0xffffffffb1200000
 194              	$L14:
 455:/mnt/hgfs/boot/booter/source/uart.c **** #endif
 456:/mnt/hgfs/boot/booter/source/uart.c **** #ifdef UART2_PHYS_ADDR
 457:/mnt/hgfs/boot/booter/source/uart.c **** 		case 2: uart = (AU1000_UART *)KSEG1(UART2_PHYS_ADDR); break;
 458:/mnt/hgfs/boot/booter/source/uart.c **** #endif
 459:/mnt/hgfs/boot/booter/source/uart.c **** #ifdef UART3_PHYS_ADDR
 460:/mnt/hgfs/boot/booter/source/uart.c **** 		case 3: uart = (AU1000_UART *)KSEG1(UART3_PHYS_ADDR); break;
 461:/mnt/hgfs/boot/booter/source/uart.c **** #endif
 462:/mnt/hgfs/boot/booter/source/uart.c **** 		default:
 463:/mnt/hgfs/boot/booter/source/uart.c **** 			return;
 464:/mnt/hgfs/boot/booter/source/uart.c **** 	}
 465:/mnt/hgfs/boot/booter/source/uart.c **** 
 466:/mnt/hgfs/boot/booter/source/uart.c **** 	while ((uart->linestat & UART_LINESTAT_TE) == 0)
 195              		.loc 1 466 0
 196 016c 1C00628C 		lw	$2,28($3)
 197 0170 40004230 		andi	$2,$2,0x40
 198 0174 FDFF4010 		beq	$2,$0,$L14
 199 0178 00000000 		nop
 200              	
 467:/mnt/hgfs/boot/booter/source/uart.c **** 		;
 468:/mnt/hgfs/boot/booter/source/uart.c **** 
 469:/mnt/hgfs/boot/booter/source/uart.c **** 	uart->txdata = ch;
 201              		.loc 1 469 0
 202 017c 040065AC 		sw	$5,4($3)
 203 0180 0800E003 		j	$31
 204 0184 00000000 		nop
 205              	
 206              		.set	macro
 207              		.set	reorder
 208              	$LFE3:
 209              		.end	uartPutChar
 210              		.align	2
 211              		.globl	uartGetChar
GAS LISTING /tmp/cc4XVykA.s 			page 13


 212              		.ent	uartGetChar
 213              		.type	uartGetChar, @function
 214              	uartGetChar:
 215              	$LFB4:
 470:/mnt/hgfs/boot/booter/source/uart.c **** 
 471:/mnt/hgfs/boot/booter/source/uart.c **** //	(*((int*)0xAF000000))++;
 472:/mnt/hgfs/boot/booter/source/uart.c **** }
 473:/mnt/hgfs/boot/booter/source/uart.c **** 
 474:/mnt/hgfs/boot/booter/source/uart.c **** /********************************************************************/
 475:/mnt/hgfs/boot/booter/source/uart.c **** void
 476:/mnt/hgfs/boot/booter/source/uart.c **** uartGetChar (int uartNumber, int *ch)
 477:/mnt/hgfs/boot/booter/source/uart.c **** {
 216              		.loc 1 477 0
 217              		.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
 218              		.mask	0x00000000,0
 219              		.fmask	0x00000000,0
 220              		.set	noreorder
 221              		.set	nomacro
 222              		
 478:/mnt/hgfs/boot/booter/source/uart.c **** 	AU1000_UART *uart;
 479:/mnt/hgfs/boot/booter/source/uart.c **** 	switch (uartNumber)
 480:/mnt/hgfs/boot/booter/source/uart.c **** 	{
 481:/mnt/hgfs/boot/booter/source/uart.c **** #ifdef UART0_PHYS_ADDR
 482:/mnt/hgfs/boot/booter/source/uart.c **** 		case 0: uart = (AU1000_UART *)KSEG1(UART0_PHYS_ADDR); break;
 223              		.loc 1 482 0
 224              		.loc 1 479 0
 225 0188 07008010 		beq	$4,$0,$L22
 226 018c 10B1033C 		li	$3,-1324351488			# 0xffffffffb1100000
 227              	
 228 0190 01000224 		li	$2,1			# 0x1
 229 0194 03008210 		beq	$4,$2,$L24
 230 0198 00000000 		nop
 231              	
 232 019c 0800E003 		j	$31
 233 01a0 00000000 		nop
 234              	
 235              	$L24:
 483:/mnt/hgfs/boot/booter/source/uart.c **** #endif
 484:/mnt/hgfs/boot/booter/source/uart.c **** #ifdef UART1_PHYS_ADDR
 485:/mnt/hgfs/boot/booter/source/uart.c **** 		case 1: uart = (AU1000_UART *)KSEG1(UART1_PHYS_ADDR); break;
 236              		.loc 1 485 0
 237 01a4 20B1033C 		li	$3,-1323302912			# 0xffffffffb1200000
 238              	$L22:
 486:/mnt/hgfs/boot/booter/source/uart.c **** #endif
 487:/mnt/hgfs/boot/booter/source/uart.c **** #ifdef UART2_PHYS_ADDR
 488:/mnt/hgfs/boot/booter/source/uart.c **** 		case 2: uart = (AU1000_UART *)KSEG1(UART2_PHYS_ADDR); break;
 489:/mnt/hgfs/boot/booter/source/uart.c **** #endif
 490:/mnt/hgfs/boot/booter/source/uart.c **** #ifdef UART3_PHYS_ADDR
 491:/mnt/hgfs/boot/booter/source/uart.c **** 		case 3: uart = (AU1000_UART *)KSEG1(UART3_PHYS_ADDR); break;
 492:/mnt/hgfs/boot/booter/source/uart.c **** #endif
 493:/mnt/hgfs/boot/booter/source/uart.c **** 		default:
 494:/mnt/hgfs/boot/booter/source/uart.c **** 			return;
 495:/mnt/hgfs/boot/booter/source/uart.c **** 	}
 496:/mnt/hgfs/boot/booter/source/uart.c **** 
 497:/mnt/hgfs/boot/booter/source/uart.c **** 	while ((uart->linestat & UART_LINESTAT_DR) == 0)
 239              		.loc 1 497 0
 240 01a8 1C00628C 		lw	$2,28($3)
GAS LISTING /tmp/cc4XVykA.s 			page 14


 241 01ac 01004238 		xori	$2,$2,0x1
 242 01b0 01004230 		andi	$2,$2,0x1
 243 01b4 FCFF4014 		bne	$2,$0,$L22
 244 01b8 00000000 		nop
 245              	
 498:/mnt/hgfs/boot/booter/source/uart.c **** 		;
 499:/mnt/hgfs/boot/booter/source/uart.c **** 	
 500:/mnt/hgfs/boot/booter/source/uart.c **** 	*ch = (uart->rxdata & 0x00FF);
 246              		.loc 1 500 0
 247 01bc 0000628C 		lw	$2,0($3)
 248 01c0 FF004230 		andi	$2,$2,0xff
 249 01c4 0800E003 		j	$31
 250 01c8 0000A2AC 		sw	$2,0($5)
 251              	
 252              		.set	macro
 253              		.set	reorder
 254              	$LFE4:
 255              		.end	uartGetChar
 256              		.align	2
 257              		.globl	uartCheckChar
 258              		.ent	uartCheckChar
 259              		.type	uartCheckChar, @function
 260              	uartCheckChar:
 261              	$LFB5:
 501:/mnt/hgfs/boot/booter/source/uart.c **** }
 502:/mnt/hgfs/boot/booter/source/uart.c **** 
 503:/mnt/hgfs/boot/booter/source/uart.c **** /********************************************************************/
 504:/mnt/hgfs/boot/booter/source/uart.c **** int
 505:/mnt/hgfs/boot/booter/source/uart.c **** uartCheckChar (int uartNumber)
 506:/mnt/hgfs/boot/booter/source/uart.c **** {
 262              		.loc 1 506 0
 263              		.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
 264              		.mask	0x00000000,0
 265              		.fmask	0x00000000,0
 266              		.set	noreorder
 267              		.set	nomacro
 268              		
 507:/mnt/hgfs/boot/booter/source/uart.c **** 	AU1000_UART *uart;
 508:/mnt/hgfs/boot/booter/source/uart.c **** 
 509:/mnt/hgfs/boot/booter/source/uart.c **** 	switch (uartNumber)
 510:/mnt/hgfs/boot/booter/source/uart.c **** 	{
 511:/mnt/hgfs/boot/booter/source/uart.c **** #ifdef UART0_PHYS_ADDR
 512:/mnt/hgfs/boot/booter/source/uart.c **** 		case 0: uart = (AU1000_UART *)KSEG1(UART0_PHYS_ADDR); break;
 269              		.loc 1 512 0
 270              		.loc 1 509 0
 271 01cc 06008010 		beq	$4,$0,$L26
 272 01d0 10B1033C 		li	$3,-1324351488			# 0xffffffffb1100000
 273              	
 274 01d4 01000224 		li	$2,1			# 0x1
 513:/mnt/hgfs/boot/booter/source/uart.c **** #endif
 514:/mnt/hgfs/boot/booter/source/uart.c **** #ifdef UART1_PHYS_ADDR
 515:/mnt/hgfs/boot/booter/source/uart.c **** 		case 1: uart = (AU1000_UART *)KSEG1(UART1_PHYS_ADDR); break;
 275              		.loc 1 515 0
 276              		.loc 1 509 0
 277 01d8 03008210 		beq	$4,$2,$L26
 278 01dc 20B1033C 		li	$3,-1323302912			# 0xffffffffb1200000
 279              	
GAS LISTING /tmp/cc4XVykA.s 			page 15


 516:/mnt/hgfs/boot/booter/source/uart.c **** #endif
 517:/mnt/hgfs/boot/booter/source/uart.c **** #ifdef UART2_PHYS_ADDR
 518:/mnt/hgfs/boot/booter/source/uart.c **** 		case 2: uart = (AU1000_UART *)KSEG1(UART2_PHYS_ADDR); break;
 519:/mnt/hgfs/boot/booter/source/uart.c **** #endif
 520:/mnt/hgfs/boot/booter/source/uart.c **** #ifdef UART3_PHYS_ADDR
 521:/mnt/hgfs/boot/booter/source/uart.c **** 		case 3: uart = (AU1000_UART *)KSEG1(UART3_PHYS_ADDR); break;
 522:/mnt/hgfs/boot/booter/source/uart.c **** #endif
 523:/mnt/hgfs/boot/booter/source/uart.c **** 		default:
 524:/mnt/hgfs/boot/booter/source/uart.c **** 			return;
 280              		.loc 1 524 0
 281 01e0 0800E003 		j	$31
 282 01e4 00000000 		nop
 283              	
 284              	$L26:
 525:/mnt/hgfs/boot/booter/source/uart.c **** 	}
 526:/mnt/hgfs/boot/booter/source/uart.c **** 
 527:/mnt/hgfs/boot/booter/source/uart.c **** 	if (uart->linestat & UART_LINESTAT_DR)
 285              		.loc 1 527 0