dprintf.lst

au1200下的boot代码

GAS LISTING /tmp/ccybp2uc.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 64030000 		.text
   9      0200FD00 
   9      00000101 
   9      FB0E0A00 
   9      01010101 
  10              	$Ltext0:
  11              		.align	2
  12              		.ent	fmtnum
  13              		.type	fmtnum, @function
  14              	fmtnum:
  15              	$LFB2:
  16              		.file 1 "/mnt/hgfs/boot/booter/source/dprintf.c"
   1:/mnt/hgfs/boot/booter/source/dprintf.c **** #include <stdarg.h>
   2:/mnt/hgfs/boot/booter/source/dprintf.c **** #include "example.h"
   3:/mnt/hgfs/boot/booter/source/dprintf.c **** 
   4:/mnt/hgfs/boot/booter/source/dprintf.c **** //
   5:/mnt/hgfs/boot/booter/source/dprintf.c **** //	dprintf - printf using no resources
   6:/mnt/hgfs/boot/booter/source/dprintf.c **** //
   7:/mnt/hgfs/boot/booter/source/dprintf.c **** //	understands the following formats:
   8:/mnt/hgfs/boot/booter/source/dprintf.c **** //
   9:/mnt/hgfs/boot/booter/source/dprintf.c **** //		%c - character
  10:/mnt/hgfs/boot/booter/source/dprintf.c **** //		&d - decimal
  11:/mnt/hgfs/boot/booter/source/dprintf.c **** //		%x - lower case hex
  12:/mnt/hgfs/boot/booter/source/dprintf.c **** //		%X - upper case hex
  13:/mnt/hgfs/boot/booter/source/dprintf.c **** //
  14:/mnt/hgfs/boot/booter/source/dprintf.c **** //		all formats can have a field width specifier as in %8x and can
  15:/mnt/hgfs/boot/booter/source/dprintf.c **** //		also have leading zeros as in %08x.
  16:/mnt/hgfs/boot/booter/source/dprintf.c **** //
  17:/mnt/hgfs/boot/booter/source/dprintf.c **** 
  18:/mnt/hgfs/boot/booter/source/dprintf.c **** static int
  19:/mnt/hgfs/boot/booter/source/dprintf.c **** fmtnum(char *buf, unsigned int n, int base, char *digits)
  20:/mnt/hgfs/boot/booter/source/dprintf.c **** {
  17              		.loc 1 20 0
  18              		.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
  19              		.mask	0x00000000,0
  20              		.fmask	0x00000000,0
  21              		.set	noreorder
  22              		.set	nomacro
  23              		
  24              		.loc 1 20 0
  25 0000 2110A000 		move	$2,$5
  26 0004 21488000 		move	$9,$4
  21:/mnt/hgfs/boot/booter/source/dprintf.c **** 	int		i;
  22:/mnt/hgfs/boot/booter/source/dprintf.c **** 
  23:/mnt/hgfs/boot/booter/source/dprintf.c **** 	i = 0;
  27              		.loc 1 23 0
  24:/mnt/hgfs/boot/booter/source/dprintf.c **** 	if( n == 0 )
  28              		.loc 1 24 0
  29 0008 0600A014 		bne	$5,$0,$L5
GAS LISTING /tmp/ccybp2uc.s 			page 2


  30 000c 21400000 		move	$8,$0
  31              	
  25:/mnt/hgfs/boot/booter/source/dprintf.c **** 	{
  26:/mnt/hgfs/boot/booter/source/dprintf.c **** 		buf[0] = '0';
  27:/mnt/hgfs/boot/booter/source/dprintf.c **** 		return 1;
  32              		.loc 1 27 0
  33 0010 01000524 		li	$5,1			# 0x1
  34              		.loc 1 26 0
  35 0014 30000224 		li	$2,48
  36 0018 000082A0 		sb	$2,0($4)
  28:/mnt/hgfs/boot/booter/source/dprintf.c **** 	}
  29:/mnt/hgfs/boot/booter/source/dprintf.c **** 
  30:/mnt/hgfs/boot/booter/source/dprintf.c **** 	while( n != 0 )
  31:/mnt/hgfs/boot/booter/source/dprintf.c **** 	{
  32:/mnt/hgfs/boot/booter/source/dprintf.c **** 		buf[i++] = digits[n % base];
  33:/mnt/hgfs/boot/booter/source/dprintf.c **** 		n /= base;
  34:/mnt/hgfs/boot/booter/source/dprintf.c **** 	}
  35:/mnt/hgfs/boot/booter/source/dprintf.c **** 	buf[i] = 0;		// terminate string
  36:/mnt/hgfs/boot/booter/source/dprintf.c **** 	return i;
  37:/mnt/hgfs/boot/booter/source/dprintf.c **** }
  37              		.loc 1 37 0
  38 001c 0800E003 		j	$31
  39 0020 2110A000 		move	$2,$5
  40              	
  41              	$L5:
  42              		.loc 1 32 0
  43 0024 1B004600 		divu	$0,$2,$6
  44 0028 0200C014 		bne	$6,$0,1f
  45 002c 00000000 		nop
  46 0030 0D000700 		break	7
  47              	1:
  48 0034 21280901 		addu	$5,$8,$9
  49 0038 01000825 		addiu	$8,$8,1
  50 003c 10100000 		mfhi	$2
  51 0040 21104700 		addu	$2,$2,$7
  52 0044 00004390 		lbu	$3,0($2)
  53 0048 12200000 		mflo	$4
  54              		.loc 1 33 0
  55 004c 12100000 		mflo	$2
  56              		.loc 1 32 0
  57              		.loc 1 33 0
  58 0050 F4FF8014 		bne	$4,$0,$L5
  59 0054 0000A3A0 		sb	$3,0($5)
  60              	
  61              		.loc 1 35 0
  62 0058 21102801 		addu	$2,$9,$8
  63              		.loc 1 36 0
  64 005c 21280001 		move	$5,$8
  65              		.loc 1 35 0
  66 0060 000040A0 		sb	$0,0($2)
  67              		.loc 1 37 0
  68 0064 0800E003 		j	$31
  69 0068 2110A000 		move	$2,$5
  70              	
  71              		.set	macro
  72              		.set	reorder
  73              	$LFE2:
GAS LISTING /tmp/ccybp2uc.s 			page 3


  74              		.end	fmtnum
  75              		.section	.rodata.str1.4,"aMS",@progbits,1
  76              		.align	2
  77              	$LC2:
  78 0000 30313233 		.ascii	"0123456789\000"
  78      34353637 
  78      383900
  79 000b 00       		.align	2
  80              	$LC0:
  81 000c 30313233 		.ascii	"0123456789abcdef\000"
  81      34353637 
  81      38396162 
  81      63646566 
  81      00
  82 001d 000000   		.align	2
  83              	$LC1:
  84 0020 30313233 		.ascii	"0123456789ABCDEF\000"
  84      34353637 
  84      38394142 
  84      43444546 
  84      00
  85              		.text
  86              		.align	2
  87              		.globl	printf
  88              		.ent	printf
  89              		.type	printf, @function
  90              	printf:
  91              	$LFB3:
  38:/mnt/hgfs/boot/booter/source/dprintf.c **** 
  39:/mnt/hgfs/boot/booter/source/dprintf.c **** void
  40:/mnt/hgfs/boot/booter/source/dprintf.c **** printf (const char *fmt,...)
  41:/mnt/hgfs/boot/booter/source/dprintf.c **** {
  92              		.loc 1 41 0
  93              		.frame	$sp,96,$31		# vars= 40, regs= 10/0, args= 16, gp= 0
  94              		.mask	0xc0ff0000,-4
  95              		.fmask	0x00000000,0
  96              		.set	noreorder
  97              		.set	nomacro
  98              		
  99 006c A0FFBD27 		addiu	$sp,$sp,-96
 100              	$LCFI0:
 101 0070 5400B7AF 		sw	$23,84($sp)
 102              	$LCFI1:
 103 0074 4C00B5AF 		sw	$21,76($sp)
 104              	$LCFI2:
 105 0078 4400B3AF 		sw	$19,68($sp)
 106              	$LCFI3:
 107 007c 4000B2AF 		sw	$18,64($sp)
 108              	$LCFI4:
 109 0080 5C00BFAF 		sw	$31,92($sp)
 110              	$LCFI5:
 111 0084 5800BEAF 		sw	$fp,88($sp)
 112              	$LCFI6:
 113 0088 5000B6AF 		sw	$22,80($sp)
 114              	$LCFI7:
 115 008c 4800B4AF 		sw	$20,72($sp)
 116              	$LCFI8:
GAS LISTING /tmp/ccybp2uc.s 			page 4


 117 0090 3C00B1AF 		sw	$17,60($sp)
 118              	$LCFI9:
 119 0094 3800B0AF 		sw	$16,56($sp)
 120              	$LCFI10:
 121              		.loc 1 41 0
 122 0098 21908000 		move	$18,$4
  42:/mnt/hgfs/boot/booter/source/dprintf.c **** 	void		((*putcf)()) = (void *)putc;
  43:/mnt/hgfs/boot/booter/source/dprintf.c **** 	va_list		argp;
  44:/mnt/hgfs/boot/booter/source/dprintf.c **** 	int			*i;
  45:/mnt/hgfs/boot/booter/source/dprintf.c **** 	char		*charp;
  46:/mnt/hgfs/boot/booter/source/dprintf.c **** 	int			f1, pbi, ival;
  47:/mnt/hgfs/boot/booter/source/dprintf.c **** 	int			lzflag, rjust;
  48:/mnt/hgfs/boot/booter/source/dprintf.c **** 	int			c;
  49:/mnt/hgfs/boot/booter/source/dprintf.c **** 	char		pbuf[40];
  50:/mnt/hgfs/boot/booter/source/dprintf.c **** 	int			col;
  51:/mnt/hgfs/boot/booter/source/dprintf.c **** 
  52:/mnt/hgfs/boot/booter/source/dprintf.c **** 	va_start(argp,fmt);
  53:/mnt/hgfs/boot/booter/source/dprintf.c **** 	col = 0;
  54:/mnt/hgfs/boot/booter/source/dprintf.c **** 	while( c = *fmt++ )
  55:/mnt/hgfs/boot/booter/source/dprintf.c **** 	{
  56:/mnt/hgfs/boot/booter/source/dprintf.c **** 		if( c == '%' )
  57:/mnt/hgfs/boot/booter/source/dprintf.c **** 		{
  58:/mnt/hgfs/boot/booter/source/dprintf.c **** 			f1 = 0;
  59:/mnt/hgfs/boot/booter/source/dprintf.c **** 			c = *fmt++;
  60:/mnt/hgfs/boot/booter/source/dprintf.c **** 			if( c == '-' )
  61:/mnt/hgfs/boot/booter/source/dprintf.c **** 			{
  62:/mnt/hgfs/boot/booter/source/dprintf.c **** 				rjust = 1;
  63:/mnt/hgfs/boot/booter/source/dprintf.c **** 				c = *fmt++;
  64:/mnt/hgfs/boot/booter/source/dprintf.c **** 			}
  65:/mnt/hgfs/boot/booter/source/dprintf.c **** 			lzflag = (c == '0');
  66:/mnt/hgfs/boot/booter/source/dprintf.c **** 			while( isdigit(c) )
  67:/mnt/hgfs/boot/booter/source/dprintf.c **** 			{
  68:/mnt/hgfs/boot/booter/source/dprintf.c **** 				f1 = f1 * 10 + c - '0';
  69:/mnt/hgfs/boot/booter/source/dprintf.c **** 				c = *fmt++;
  70:/mnt/hgfs/boot/booter/source/dprintf.c **** 			}
  71:/mnt/hgfs/boot/booter/source/dprintf.c **** 
  72:/mnt/hgfs/boot/booter/source/dprintf.c **** 			if( c == 'x' )
  73:/mnt/hgfs/boot/booter/source/dprintf.c **** 			{
  74:/mnt/hgfs/boot/booter/source/dprintf.c **** 				i = (int *)va_arg(argp,int);
  75:/mnt/hgfs/boot/booter/source/dprintf.c **** 				pbi = fmtnum(pbuf,(int)i,16,"0123456789abcdef");
  76:/mnt/hgfs/boot/booter/source/dprintf.c **** 			}
  77:/mnt/hgfs/boot/booter/source/dprintf.c **** 			else if( c == 'X' )
  78:/mnt/hgfs/boot/booter/source/dprintf.c **** 			{
  79:/mnt/hgfs/boot/booter/source/dprintf.c **** 				i = (int *)va_arg(argp,int);
  80:/mnt/hgfs/boot/booter/source/dprintf.c **** 				pbi = fmtnum(pbuf,(int)i,16,"0123456789ABCDEF");
  81:/mnt/hgfs/boot/booter/source/dprintf.c **** 			}
  82:/mnt/hgfs/boot/booter/source/dprintf.c **** 			else if( c == 'd' || c == 'D' )
  83:/mnt/hgfs/boot/booter/source/dprintf.c **** 			{
  84:/mnt/hgfs/boot/booter/source/dprintf.c **** 				i = (int *)va_arg(argp,int);
  85:/mnt/hgfs/boot/booter/source/dprintf.c **** 				ival = (int)i;
  86:/mnt/hgfs/boot/booter/source/dprintf.c **** 				if( ival < 0 )
  87:/mnt/hgfs/boot/booter/source/dprintf.c **** 				{
  88:/mnt/hgfs/boot/booter/source/dprintf.c **** 					(*putcf)('-');
  89:/mnt/hgfs/boot/booter/source/dprintf.c **** 					ival = -ival;
  90:/mnt/hgfs/boot/booter/source/dprintf.c **** 					++col;
  91:/mnt/hgfs/boot/booter/source/dprintf.c **** 				}
  92:/mnt/hgfs/boot/booter/source/dprintf.c **** 				pbi = fmtnum(pbuf,ival,10,"0123456789");
GAS LISTING /tmp/ccybp2uc.s 			page 5


  93:/mnt/hgfs/boot/booter/source/dprintf.c **** 			}
  94:/mnt/hgfs/boot/booter/source/dprintf.c **** 			else if( c == 'c' )
  95:/mnt/hgfs/boot/booter/source/dprintf.c **** 			{
  96:/mnt/hgfs/boot/booter/source/dprintf.c **** 				i = (int *)va_arg(argp,int);
  97:/mnt/hgfs/boot/booter/source/dprintf.c **** 				pbi = 0;
  98:/mnt/hgfs/boot/booter/source/dprintf.c **** 				(*putcf)(i);
  99:/mnt/hgfs/boot/booter/source/dprintf.c **** 				++col;
 100:/mnt/hgfs/boot/booter/source/dprintf.c **** 				--f1;
 101:/mnt/hgfs/boot/booter/source/dprintf.c **** 			}
 102:/mnt/hgfs/boot/booter/source/dprintf.c **** 			else if( c == 's' || c == 'S' )
 103:/mnt/hgfs/boot/booter/source/dprintf.c **** 			{
 104:/mnt/hgfs/boot/booter/source/dprintf.c **** 				i = (int *)va_arg(argp,int);
 105:/mnt/hgfs/boot/booter/source/dprintf.c **** 				pbi = 0;
 106:/mnt/hgfs/boot/booter/source/dprintf.c **** 				charp = (char *)(i);
 107:/mnt/hgfs/boot/booter/source/dprintf.c **** 				while( *charp )
 108:/mnt/hgfs/boot/booter/source/dprintf.c **** 				{
 109:/mnt/hgfs/boot/booter/source/dprintf.c **** 					(*putcf)(*charp++);
 110:/mnt/hgfs/boot/booter/source/dprintf.c **** 					++col;
 111:/mnt/hgfs/boot/booter/source/dprintf.c **** 					--f1;
 112:/mnt/hgfs/boot/booter/source/dprintf.c **** 				}
 113:/mnt/hgfs/boot/booter/source/dprintf.c **** 			}
 114:/mnt/hgfs/boot/booter/source/dprintf.c **** 			else if( c == 't' || c == 'T' )
 115:/mnt/hgfs/boot/booter/source/dprintf.c **** 			{
 116:/mnt/hgfs/boot/booter/source/dprintf.c **** 				pbi = 0;
 117:/mnt/hgfs/boot/booter/source/dprintf.c **** 				while( col < f1 )
 118:/mnt/hgfs/boot/booter/source/dprintf.c **** 				{
 119:/mnt/hgfs/boot/booter/source/dprintf.c **** 					(*putcf)(' ');
 120:/mnt/hgfs/boot/booter/source/dprintf.c **** 					++col;
 121:/mnt/hgfs/boot/booter/source/dprintf.c **** 				}
 122:/mnt/hgfs/boot/booter/source/dprintf.c **** 				f1 = 0;
 123:/mnt/hgfs/boot/booter/source/dprintf.c **** 			}
 124:/mnt/hgfs/boot/booter/source/dprintf.c **** 
 125:/mnt/hgfs/boot/booter/source/dprintf.c **** 			f1 -= pbi;
 126:/mnt/hgfs/boot/booter/source/dprintf.c **** 			while( f1 > 0 )
 127:/mnt/hgfs/boot/booter/source/dprintf.c **** 			{
 128:/mnt/hgfs/boot/booter/source/dprintf.c **** 				if( lzflag )
 129:/mnt/hgfs/boot/booter/source/dprintf.c **** 					(*putcf)('0');
 130:/mnt/hgfs/boot/booter/source/dprintf.c **** 				else
 131:/mnt/hgfs/boot/booter/source/dprintf.c **** 					(*putcf)(' ');
 132:/mnt/hgfs/boot/booter/source/dprintf.c **** 				++col;
 133:/mnt/hgfs/boot/booter/source/dprintf.c **** 				--f1;
 134:/mnt/hgfs/boot/booter/source/dprintf.c **** 			}
 135:/mnt/hgfs/boot/booter/source/dprintf.c **** 
 136:/mnt/hgfs/boot/booter/source/dprintf.c **** 			while( pbi > 0 )
 137:/mnt/hgfs/boot/booter/source/dprintf.c **** 			{
 138:/mnt/hgfs/boot/booter/source/dprintf.c **** 				(*putcf)(pbuf[--pbi]);
 139:/mnt/hgfs/boot/booter/source/dprintf.c **** 				++col;
 140:/mnt/hgfs/boot/booter/source/dprintf.c **** 			}
 141:/mnt/hgfs/boot/booter/source/dprintf.c **** 		}
 142:/mnt/hgfs/boot/booter/source/dprintf.c **** 		else
 143:/mnt/hgfs/boot/booter/source/dprintf.c **** 		{
 144:/mnt/hgfs/boot/booter/source/dprintf.c **** 			(*putcf)(c);
 145:/mnt/hgfs/boot/booter/source/dprintf.c **** 			++col;
 123              		.loc 1 145 0
 124 009c 00008480 		lb	$4,0($4)
 125              		.loc 1 42 0
 126 00a0 0000023C 		lui	$2,%hi(putc)
GAS LISTING /tmp/ccybp2uc.s 			page 6


 127              		.loc 1 41 0
 128 00a4 6400A5AF 		sw	$5,100($sp)
 129 00a8 6800A6AF 		sw	$6,104($sp)
 130 00ac 6C00A7AF 		sw	$7,108($sp)
 131              		.loc 1 42 0
 132 00b0 00005524 		addiu	$21,$2,%lo(putc)
 133              		.loc 1 145 0
 134 00b4 01005226 		addiu	$18,$18,1
 135              		.loc 1 52 0
 136 00b8 6400B727 		addiu	$23,$sp,100
 137              		.loc 1 53 0
 138              		.loc 1 145 0
 139 00bc 3A008010 		beq	$4,$0,$L49
 140 00c0 21980000 		move	$19,$0
 141              	
 142 00c4 1000BE27 		addiu	$fp,$sp,16