nop
-.globl memcpy32 # int *dest, int *src, int count
-
-memcpy32:
-mc32_aloop:
- andi $t0, $a0, 0x3f
- beqz $t0, mc32_bloop_prep
- nop
- lw $t1, 0($a1)
- addiu $a2, -1
- sw $t1, 0($a0)
- beqz $a2, mc32_return
- addiu $a0, 4
- j mc32_aloop
- addiu $a1, 4
-
-mc32_bloop_prep:
- srl $t0, $a2, 4 # we will do 64 bytes per iteration (cache line)
- beqz $t0, mc32_bloop_end
-
-mc32_bloop:
- addiu $t0, -1
- cache 0x18, ($a0) # create dirty exclusive
- lw $t2, 0x00($a1)
- lw $t3, 0x04($a1)
- lw $t4, 0x08($a1)
- lw $t5, 0x0c($a1)
- lw $t6, 0x10($a1)
- lw $t7, 0x14($a1)
- lw $t8, 0x18($a1)
- lw $t9, 0x1c($a1)
- sw $t2, 0x00($a0)
- sw $t3, 0x04($a0)
- sw $t4, 0x08($a0)
- sw $t5, 0x0c($a0)
- sw $t6, 0x10($a0)
- sw $t7, 0x14($a0)
- sw $t8, 0x18($a0)
- sw $t9, 0x1c($a0)
- lw $t2, 0x20($a1)
- lw $t3, 0x24($a1)
- lw $t4, 0x28($a1)
- lw $t5, 0x2c($a1)
- lw $t6, 0x30($a1)
- lw $t7, 0x34($a1)
- lw $t8, 0x38($a1)
- lw $t9, 0x3c($a1)
- sw $t2, 0x20($a0)
- sw $t3, 0x24($a0)
- sw $t4, 0x28($a0)
- sw $t5, 0x2c($a0)
- sw $t6, 0x30($a0)
- sw $t7, 0x34($a0)
- sw $t8, 0x38($a0)
- sw $t9, 0x3c($a0)
- addiu $a0, 0x40
- bnez $t0, mc32_bloop
- addiu $a1, 0x40
-
-mc32_bloop_end:
- andi $a2, $a2, 0x0f
- beqz $a2, mc32_return
-
-mc32_cloop:
- lw $t1, 0($a1)
- addiu $a2, -1
- addiu $a1, 4
- sw $t1, 0($a0)
- bnez $a2, mc32_cloop
- addiu $a0, 4
-
-mc32_return:
- jr $ra
- nop
-
# vim:filetype=mips
notaz.gp2x.de / picodrive.git / blobdiff