Changeset a2da43c in mainline for boot/arch/mips32/src/asm.S

Timestamp:

2010-07-24T20:03:35Z (14 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

af96dd57, c621f4aa

Parents:

46757a6

Message:

memcpy assembly blobs in boot stage are not needed. Replace them all with a simple C function.

File:

• boot/arch/mips32/src/asm.S (modified) (2 diffs)

boot/arch/mips32/src/asm.S

@@ -36 +36 @@
 .global start
 .global halt
-.global memcpy
 .global jump_to_kernel
 
@@ -127 +126 @@
         nop
 
-memcpy:
-        addiu $v0, $a1, 3
-        li $v1, -4
-        and $v0, $v0, $v1
-        beq $a1, $v0, 3f
-        move $t0, $a0
-        move $t2, $a0
-        
-        0:
-                beq $a2, $zero, 2f
-                move $a3, $zero
-        
-        1:
-                addu $v0, $a1, $a3
-                lbu $a0, 0($v0)
-                addu $v1, $t0, $a3
-                addiu $a3, $a3, 1
-                bne $a3, $a2, 1b
-                sb $a0, 0($v1)
-        
-        2:
-                jr $ra
-                move $v0, $t2
-        
-        3:
-                addiu $v0, $a0, 3
-                and $v0, $v0, $v1
-                bne $a0, $v0, 0b
-                srl $t1, $a2, 2
-                
-                beq $t1, $zero, 5f
-                move $a3, $zero
-                
-                move $a3, $zero
-                move $a0, $zero
-        
-        4:
-                addu $v0, $a1, $a0
-                lw $v1, 0($v0)
-                addiu $a3, $a3, 1
-                addu $v0, $t0, $a0
-                sw $v1, 0($v0)
-                bne $a3, $t1, 4b
-                addiu $a0, $a0, 4
-        
-        5:
-                andi $a2, $a2, 0x3
-                beq $a2, $zero, 2b
-                nop
-                
-                sll $v0, $a3, 2
-                addu $t1, $v0, $t0
-                move $a3, $zero
-                addu $t0, $v0, $a1
-        
-        6:
-                addu $v0, $t0, $a3
-                lbu $a0, 0($v0)
-                addu $v1, $t1, $a3
-                addiu $a3, $a3, 1
-                bne $a3, $a2, 6b
-                sb $a0, 0($v1)
-                
-                jr $ra
-                move $v0, $t2
-
 jump_to_kernel:
         #