tlb.lst

au1200下的boot代码

GAS LISTING /tmp/ccLt6UhX.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 2F010000 		.text
   9      02009600 
   9      00000101 
   9      FB0E0A00 
   9      01010101 
  10              	$Ltext0:
  11              		.data
  12              		.align	2
  13              		.type	lastVA, @object
  14              		.size	lastVA, 4
  15              	lastVA:
  16 0000 00000050 		.word	1342177280
  17 0004 00000000 		.text
  17      00000000 
  17      00000000 
  18              		.align	2
  19              		.globl	tlbInit
  20              		.ent	tlbInit
  21              		.type	tlbInit, @function
  22              	tlbInit:
  23              	$LFB2:
  24              		.file 1 "/mnt/hgfs/boot/booter/source/tlb.c"
   1:/mnt/hgfs/boot/booter/source/tlb.c **** /*
   2:/mnt/hgfs/boot/booter/source/tlb.c ****  * Sample code to demonstrate TLB manipulation
   3:/mnt/hgfs/boot/booter/source/tlb.c ****  */
   4:/mnt/hgfs/boot/booter/source/tlb.c **** #include "example.h"
   5:/mnt/hgfs/boot/booter/source/tlb.c **** 
   6:/mnt/hgfs/boot/booter/source/tlb.c **** /********************************************************************/
   7:/mnt/hgfs/boot/booter/source/tlb.c **** 
   8:/mnt/hgfs/boot/booter/source/tlb.c **** typedef struct PTE
   9:/mnt/hgfs/boot/booter/source/tlb.c **** {
  10:/mnt/hgfs/boot/booter/source/tlb.c **** 	uint32 EntryLo0;
  11:/mnt/hgfs/boot/booter/source/tlb.c **** 	uint32 EntryLo1;
  12:/mnt/hgfs/boot/booter/source/tlb.c **** 
  13:/mnt/hgfs/boot/booter/source/tlb.c **** } PTE;
  14:/mnt/hgfs/boot/booter/source/tlb.c **** 
  15:/mnt/hgfs/boot/booter/source/tlb.c **** /*
  16:/mnt/hgfs/boot/booter/source/tlb.c ****  * Level 1 Page Table, array of pointers to real PTEs
  17:/mnt/hgfs/boot/booter/source/tlb.c ****  */
  18:/mnt/hgfs/boot/booter/source/tlb.c **** PTE *L1PTE[256];
  19:/mnt/hgfs/boot/booter/source/tlb.c **** 
  20:/mnt/hgfs/boot/booter/source/tlb.c **** /*
  21:/mnt/hgfs/boot/booter/source/tlb.c ****  * Level 2 Page Table, array of PTEs
  22:/mnt/hgfs/boot/booter/source/tlb.c ****  */
  23:/mnt/hgfs/boot/booter/source/tlb.c **** PTE L2PTE[4096];
  24:/mnt/hgfs/boot/booter/source/tlb.c **** 
  25:/mnt/hgfs/boot/booter/source/tlb.c **** /* Simple virtual alloc scheme...arbitrary, just stay out of KSEG0,1 */
  26:/mnt/hgfs/boot/booter/source/tlb.c **** static char *lastVA = (char *)0x50000000;
  27:/mnt/hgfs/boot/booter/source/tlb.c **** 
GAS LISTING /tmp/ccLt6UhX.s 			page 2


  28:/mnt/hgfs/boot/booter/source/tlb.c **** /********************************************************************/
  29:/mnt/hgfs/boot/booter/source/tlb.c **** void
  30:/mnt/hgfs/boot/booter/source/tlb.c **** tlbInit (void)
  31:/mnt/hgfs/boot/booter/source/tlb.c **** {
  25              		.loc 1 31 0
  26              		.frame	$sp,24,$31		# vars= 0, regs= 1/0, args= 16, gp= 0
  27              		.mask	0x80000000,-8
  28              		.fmask	0x00000000,0
  29              		.set	noreorder
  30              		.set	nomacro
  31              		
  32 0000 E8FFBD27 		addiu	$sp,$sp,-24
  33              	$LCFI0:
  32:/mnt/hgfs/boot/booter/source/tlb.c **** 	extern void asmTlbInit (void);
  33:/mnt/hgfs/boot/booter/source/tlb.c **** 	extern uint32 asmTlbRefillHandler[];
  34:/mnt/hgfs/boot/booter/source/tlb.c **** 	extern uint32 asmTlbRefillHandlerEnd[];
  35:/mnt/hgfs/boot/booter/source/tlb.c **** 	uint32 va;
  36:/mnt/hgfs/boot/booter/source/tlb.c **** 	int i;
  37:/mnt/hgfs/boot/booter/source/tlb.c **** 
  38:/mnt/hgfs/boot/booter/source/tlb.c **** 	uint32 *v = (uint32 *)0x80000000;
  39:/mnt/hgfs/boot/booter/source/tlb.c **** 	uint32 *p, *q;
  40:/mnt/hgfs/boot/booter/source/tlb.c **** 
  41:/mnt/hgfs/boot/booter/source/tlb.c **** 	/*
  42:/mnt/hgfs/boot/booter/source/tlb.c **** 	 * Install TLB Refill handler.
  43:/mnt/hgfs/boot/booter/source/tlb.c **** 	 */
  44:/mnt/hgfs/boot/booter/source/tlb.c **** 	p = asmTlbRefillHandler;
  34              		.loc 1 44 0
  35 0004 0000023C 		lui	$2,%hi(asmTlbRefillHandler)
  45:/mnt/hgfs/boot/booter/source/tlb.c **** 	q = asmTlbRefillHandlerEnd;
  36              		.loc 1 45 0
  37 0008 0000033C 		lui	$3,%hi(asmTlbRefillHandlerEnd)
  38              		.loc 1 31 0
  39 000c 1000BFAF 		sw	$31,16($sp)
  40              	$LCFI1:
  41              		.loc 1 44 0
  42 0010 00004524 		addiu	$5,$2,%lo(asmTlbRefillHandler)
  43              		.loc 1 45 0
  44 0014 00006624 		addiu	$6,$3,%lo(asmTlbRefillHandlerEnd)
  45              		.loc 1 38 0
  46 0018 0080043C 		li	$4,-2147483648			# 0xffffffff80000000
  47              	$L2:
  46:/mnt/hgfs/boot/booter/source/tlb.c **** 	do
  47:/mnt/hgfs/boot/booter/source/tlb.c **** 	{
  48:/mnt/hgfs/boot/booter/source/tlb.c **** 		*v++ = *p++;
  48              		.loc 1 48 0
  49 001c 0000A28C 		lw	$2,0($5)
  50 0020 0400A524 		addiu	$5,$5,4
  49:/mnt/hgfs/boot/booter/source/tlb.c **** 	} while (p < q);
  51              		.loc 1 49 0
  52 0024 2B18A600 		sltu	$3,$5,$6
  53              		.loc 1 48 0
  54 0028 000082AC 		sw	$2,0($4)
  55              		.loc 1 49 0
  56 002c FBFF6014 		bne	$3,$0,$L2
  57 0030 04008424 		addiu	$4,$4,4
  58              	
  50:/mnt/hgfs/boot/booter/source/tlb.c **** 	dcacheFlush();
GAS LISTING /tmp/ccLt6UhX.s 			page 3


  59              		.loc 1 50 0
  60 0034 0000000C 		jal	dcacheFlush
  61 0038 00000000 		nop
  62              	
  51:/mnt/hgfs/boot/booter/source/tlb.c **** 	icacheFlush();
  63              		.loc 1 51 0
  64 003c 0000000C 		jal	icacheFlush
  65 0040 00000000 		nop
  66              	
  52:/mnt/hgfs/boot/booter/source/tlb.c **** 
  53:/mnt/hgfs/boot/booter/source/tlb.c **** 	/*
  54:/mnt/hgfs/boot/booter/source/tlb.c **** 	 * Clear Status[EXL, ERL]
  55:/mnt/hgfs/boot/booter/source/tlb.c **** 	 */
  56:/mnt/hgfs/boot/booter/source/tlb.c **** 	cp0WrStatus(cp0RdStatus() & ~(STATUS_EXL | STATUS_ERL));
  67              		.loc 1 56 0
  68 0044 0000000C 		jal	cp0RdStatus
  69 0048 00000000 		nop
  70              	
  71 004c F9FF0424 		li	$4,-7			# 0xfffffffffffffff9
  72 0050 0000000C 		jal	cp0WrStatus
  73 0054 24204400 		and	$4,$2,$4
  74              	
  57:/mnt/hgfs/boot/booter/source/tlb.c **** 
  58:/mnt/hgfs/boot/booter/source/tlb.c **** 	asmTlbInit();
  75              		.loc 1 58 0
  76 0058 0000000C 		jal	asmTlbInit
  77 005c 00000000 		nop
  78              	
  59:/mnt/hgfs/boot/booter/source/tlb.c **** 
  60:/mnt/hgfs/boot/booter/source/tlb.c **** 	cp0WrPageMask(0x00000000); /* 4KB pages */
  79              		.loc 1 60 0
  80 0060 0000000C 		jal	cp0WrPageMask
  81 0064 21200000 		move	$4,$0
  82              	
  83 0068 0000043C 		lui	$4,%hi(L1PTE)
  84 006c 00008224 		addiu	$2,$4,%lo(L1PTE)
  85 0070 FF000324 		li	$3,255			# 0xff
  86              	$L8:
  61:/mnt/hgfs/boot/booter/source/tlb.c **** #define PAGE_SIZE 4096
  62:/mnt/hgfs/boot/booter/source/tlb.c **** 
  63:/mnt/hgfs/boot/booter/source/tlb.c **** 	/*
  64:/mnt/hgfs/boot/booter/source/tlb.c **** 	 * Initialize L1PTE and L2PTE
  65:/mnt/hgfs/boot/booter/source/tlb.c **** 	 */
  66:/mnt/hgfs/boot/booter/source/tlb.c **** 	for (i = 0; i < 256; ++i)
  87              		.loc 1 66 0
  88 0074 FFFF6324 		addiu	$3,$3,-1
  67:/mnt/hgfs/boot/booter/source/tlb.c **** 		L1PTE[i] = NULL;
  89              		.loc 1 67 0
  90 0078 000040AC 		sw	$0,0($2)
  91 007c FDFF6104 		bgez	$3,$L8
  92 0080 04004224 		addiu	$2,$2,4
  93              	
  94 0084 0000023C 		lui	$2,%hi(L2PTE)
  95 0088 00004524 		addiu	$5,$2,%lo(L2PTE)
  96 008c 2110A000 		move	$2,$5
  97 0090 FF0F0324 		li	$3,4095			# 0xfff
  98              	$L12:
GAS LISTING /tmp/ccLt6UhX.s 			page 4


  68:/mnt/hgfs/boot/booter/source/tlb.c **** 	for (i = 0; i < 4096; ++i)
  99              		.loc 1 68 0
 100 0094 FFFF6324 		addiu	$3,$3,-1
  69:/mnt/hgfs/boot/booter/source/tlb.c **** 	{
  70:/mnt/hgfs/boot/booter/source/tlb.c **** 		L2PTE[i].EntryLo0 = NULL;
 101              		.loc 1 70 0
 102 0098 000040AC 		sw	$0,0($2)
  71:/mnt/hgfs/boot/booter/source/tlb.c **** 		L2PTE[i].EntryLo1 = NULL;
 103              		.loc 1 71 0
 104 009c 040040AC 		sw	$0,4($2)
 105 00a0 FCFF6104 		bgez	$3,$L12
 106 00a4 08004224 		addiu	$2,$2,8
 107              	
  72:/mnt/hgfs/boot/booter/source/tlb.c **** 	}
  73:/mnt/hgfs/boot/booter/source/tlb.c **** 
  74:/mnt/hgfs/boot/booter/source/tlb.c **** 	/* Connect L2PTE */
  75:/mnt/hgfs/boot/booter/source/tlb.c **** 	va = (uint32)lastVA;
  76:/mnt/hgfs/boot/booter/source/tlb.c **** 	va >>= 24;
 108              		.loc 1 76 0
 109 00a8 0000023C 		lui	$2,%hi(lastVA)
 110 00ac 03004390 		lbu	$3,%lo(lastVA+3)($2)
  77:/mnt/hgfs/boot/booter/source/tlb.c **** 	L1PTE[(int)va] = L2PTE;
 111              		.loc 1 77 0
 112 00b0 1000BF8F 		lw	$31,16($sp)
 113 00b4 00008424 		addiu	$4,$4,%lo(L1PTE)
 114 00b8 80180300 		sll	$3,$3,2
 115 00bc 21186400 		addu	$3,$3,$4
 116 00c0 1800BD27 		addiu	$sp,$sp,24
 117 00c4 0800E003 		j	$31
 118 00c8 000065AC 		sw	$5,0($3)
 119              	
 120              		.set	macro
 121              		.set	reorder
 122              	$LFE2:
 123              		.end	tlbInit
 124              		.section	.rodata.str1.4,"aMS",@progbits,1
 125              		.align	2
 126              	$LC0:
 127 0000 4552524F 		.ascii	"ERROR: must walk PTE array\n\000"
 127      523A206D 
 127      75737420 
 127      77616C6B 
 127      20505445 
 128              		.text
 129              		.align	2
 130              		.globl	mapVirtualToPhysical
 131              		.ent	mapVirtualToPhysical
 132              		.type	mapVirtualToPhysical, @function
 133              	mapVirtualToPhysical:
 134              	$LFB3:
  78:/mnt/hgfs/boot/booter/source/tlb.c **** 
  79:/mnt/hgfs/boot/booter/source/tlb.c **** /* For test purposes only */
  80:/mnt/hgfs/boot/booter/source/tlb.c **** 	//L1PTE[0] = L2PTE;
  81:/mnt/hgfs/boot/booter/source/tlb.c **** 	//L2PTE[0].EntryLo0 = (0x00000000 >> 6) | 0x17;
  82:/mnt/hgfs/boot/booter/source/tlb.c **** 	//L2PTE[0].EntryLo1 = 0;
  83:/mnt/hgfs/boot/booter/source/tlb.c **** 
  84:/mnt/hgfs/boot/booter/source/tlb.c **** 	/* FIX!!! L1PTE must meet alignment requirements first
GAS LISTING /tmp/ccLt6UhX.s 			page 5


  85:/mnt/hgfs/boot/booter/source/tlb.c **** 	cp0WrContext((uint32)L1PTE);
  86:/mnt/hgfs/boot/booter/source/tlb.c **** 	*/
  87:/mnt/hgfs/boot/booter/source/tlb.c **** }
  88:/mnt/hgfs/boot/booter/source/tlb.c **** 
  89:/mnt/hgfs/boot/booter/source/tlb.c **** /********************************************************************/
  90:/mnt/hgfs/boot/booter/source/tlb.c **** phys_t
  91:/mnt/hgfs/boot/booter/source/tlb.c **** mapVirtualToPhysical (void *va)
  92:/mnt/hgfs/boot/booter/source/tlb.c **** {
 135              		.loc 1 92 0
 136              		.frame	$sp,32,$31		# vars= 0, regs= 3/0, args= 16, gp= 0
 137              		.mask	0x80030000,-8
 138              		.fmask	0x00000000,0
 139              		.set	noreorder
 140              		.set	nomacro
 141              		
  93:/mnt/hgfs/boot/booter/source/tlb.c **** 	phys_t pa = NULL;
  94:/mnt/hgfs/boot/booter/source/tlb.c **** 
  95:/mnt/hgfs/boot/booter/source/tlb.c **** 	if ((va >= (void *)0x80000000) && (va < (void *)0xC0000000))
 142              		.loc 1 95 0
 143 00cc 0080023C 		li	$2,-2147483648			# 0xffffffff80000000
 144 00d0 FF3F033C 		li	$3,1073676288			# 0x3fff0000
 145 00d4 21108200 		addu	$2,$4,$2
 146 00d8 FFFF6334 		ori	$3,$3,0xffff
 147              		.loc 1 92 0
 148 00dc E0FFBD27 		addiu	$sp,$sp,-32
 149              	$LCFI2:
 150 00e0 21288000 		move	$5,$4
 151              		.loc 1 95 0
 152 00e4 2B186200 		sltu	$3,$3,$2
  96:/mnt/hgfs/boot/booter/source/tlb.c **** 	{
  97:/mnt/hgfs/boot/booter/source/tlb.c **** 		pa = (phys_t)((uint32)va & ~0xE0000000);
  98:/mnt/hgfs/boot/booter/source/tlb.c **** 	}
  99:/mnt/hgfs/boot/booter/source/tlb.c **** 	else
 100:/mnt/hgfs/boot/booter/source/tlb.c **** 		printf("ERROR: must walk PTE array\n");
 153              		.loc 1 100 0
 154 00e8 0000043C 		lui	$4,%hi($LC0)
 155              		.loc 1 92 0
 156 00ec 1400B1AF 		sw	$17,20($sp)
 157              	$LCFI3:
 158 00f0 1000B0AF 		sw	$16,16($sp)
 159              	$LCFI4:
 160 00f4 1800BFAF 		sw	$31,24($sp)
 161              	$LCFI5:
 162              		.loc 1 100 0
 163 00f8 00008424 		addiu	$4,$4,%lo($LC0)
 164              		.loc 1 93 0
 165 00fc 21800000 		move	$16,$0
 166              		.loc 1 95 0
 167 0100 0C006014 		bne	$3,$0,$L19
 168 0104 21880000 		move	$17,$0
 169              	
 170              		.loc 1 97 0
 171 0108 FF1F023C 		li	$2,536805376			# 0x1fff0000
 172 010c FFFF4234 		ori	$2,$2,0xffff
 173 0110 2480A200 		and	$16,$5,$2
 174 0114 21880000 		move	$17,$0
 101:/mnt/hgfs/boot/booter/source/tlb.c **** 
GAS LISTING /tmp/ccLt6UhX.s 			page 6


 102:/mnt/hgfs/boot/booter/source/tlb.c **** 	return pa;
 103:/mnt/hgfs/boot/booter/source/tlb.c **** }
 175              		.loc 1 103 0
 176 0118 21100002 		move	$2,$16
 177 011c 21182002 		move	$3,$17
 178 0120 1800BF8F 		lw	$31,24($sp)
 179 0124 1400B18F 		lw	$17,20($sp)
 180 0128 1000B08F 		lw	$16,16($sp)
 181 012c 0800E003 		j	$31
 182 0130 2000BD27 		addiu	$sp,$sp,32
 183              	
 184              	$L19:
 185              		.loc 1 100 0
 186 0134 0000000C 		jal	printf
 187 0138 00000000 		nop
 188              	
 189              		.loc 1 103 0
 190 013c 21100002 		move	$2,$16
 191 0140 21182002 		move	$3,$17
 192 0144 1800BF8F 		lw	$31,24($sp)
 193 0148 1400B18F 		lw	$17,20($sp)
 194 014c 1000B08F 		lw	$16,16($sp)
 195 0150 0800E003 		j	$31
 196 0154 2000BD27 		addiu	$sp,$sp,32
 197              	
 198              		.set	macro
 199              		.set	reorder
 200              	$LFE3:
 201              		.end	mapVirtualToPhysical
 202              		.align	2
 203              		.globl	valloc
 204              		.ent	valloc
 205              		.type	valloc, @function
 206              	valloc:
 207              	$LFB4:
 104:/mnt/hgfs/boot/booter/source/tlb.c **** 
 105:/mnt/hgfs/boot/booter/source/tlb.c **** /********************************************************************/
 106:/mnt/hgfs/boot/booter/source/tlb.c **** void *
 107:/mnt/hgfs/boot/booter/source/tlb.c **** valloc (unsigned long size, unsigned long flags)
 108:/mnt/hgfs/boot/booter/source/tlb.c **** {
 208              		.loc 1 108 0
 209              		.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
 210              		.mask	0x00000000,0
 211              		.fmask	0x00000000,0
 212              		.set	noreorder
 213              		.set	nomacro
 214              		
 109:/mnt/hgfs/boot/booter/source/tlb.c **** 	/*
 110:/mnt/hgfs/boot/booter/source/tlb.c **** 	 * Allocate a chunk of virtual address space
 111:/mnt/hgfs/boot/booter/source/tlb.c **** 	 * FIX Someday let flags specify an alignment?
 112:/mnt/hgfs/boot/booter/source/tlb.c **** 	 */
 113:/mnt/hgfs/boot/booter/source/tlb.c **** 	void *va;
 114:/mnt/hgfs/boot/booter/source/tlb.c **** 
 115:/mnt/hgfs/boot/booter/source/tlb.c **** 	/* NOTE: There is no check for overflow of the single L2PTE */
 116:/mnt/hgfs/boot/booter/source/tlb.c ****