-#------------------------------------------------------------------------------ \r
+#------------------------------------------------------------------------------\r
#\r
# CopyMem() worker for ARM\r
#\r
# This file started out as C code that did 64 bit moves if the buffer was\r
# 32-bit aligned, else it does a byte copy. It also does a byte copy for\r
-# any trailing bytes. It was updated to do 32-byte copies using stm/ldm. \r
+# any trailing bytes. It was updated to do 32-byte copies using stm/ldm.\r
#\r
# Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>\r
# This program and the accompanying materials\r
/**\r
Copy Length bytes from Source to Destination. Overlap is OK.\r
\r
- This implementation \r
+ This implementation\r
\r
@param Destination Target of copy\r
@param Source Place to copy from\r
mov r10, r0\r
mov r12, r2\r
mov r14, r1\r
- \r
+\r
memcopy_check_overlapped:\r
cmp r11, r1\r
// If (dest < source)\r
cmp r12, r3\r
bcc memcopy_check_optim_default\r
\r
- // If (length == 0) \r
+ // If (length == 0)\r
cmp r12, #0\r
beq memcopy_end\r
- \r
+\r
b memcopy_check_optim_overlap\r
\r
memcopy_check_optim_default:\r
movls r0, #0\r
andhi r0, r3, #1\r
b memcopy_default\r
- \r
+\r
memcopy_check_optim_overlap:\r
// r10 = dest_end, r14 = source_end\r
add r10, r11, r12\r
tst r14, #0xF\r
movne r0, #0\r
b memcopy_overlapped\r
- \r
+\r
memcopy_overlapped_non_optim:\r
// We read 1 byte from the end of the source buffer\r
sub r3, r14, #1\r
sub r12, r12, #1\r
- ldrb r3, [r3, #0] \r
+ ldrb r3, [r3, #0]\r
sub r2, r10, #1\r
cmp r12, #0\r
// We write 1 byte at the end of the dest buffer\r
// Are we in the optimized case ?\r
cmp r0, #0\r
beq memcopy_overlapped_non_optim\r
- \r
+\r
// Optimized Overlapped - Read 32 bytes\r
sub r14, r14, #32\r
sub r12, r12, #32\r
cmp r12, #31\r
ldmia r14, {r2-r9}\r
- \r
+\r
// If length is less than 32 then disable optim\r
movls r0, #0\r
- \r
+\r
cmp r12, #0\r
- \r
- // Optimized Overlapped - Write 32 bytes \r
+\r
+ // Optimized Overlapped - Write 32 bytes\r
sub r10, r10, #32\r
stmia r10, {r2-r9}\r
- \r
+\r
// while (length != 0)\r
bne memcopy_overlapped\r
b memcopy_end\r
- \r
+\r
memcopy_default_non_optim:\r
// Byte copy\r
- ldrb r3, [r14], #1 \r
+ ldrb r3, [r14], #1\r
sub r12, r12, #1\r
strb r3, [r10], #1\r
- \r
+\r
memcopy_default:\r
cmp r12, #0\r
beq memcopy_end\r
- \r
+\r
// r10 = dest, r14 = source\r
memcopy_default_loop:\r
cmp r0, #0\r
beq memcopy_default_non_optim\r
- \r
+\r
// Optimized memcopy - Read 32 Bytes\r
sub r12, r12, #32\r
cmp r12, #31\r
ldmia r14!, {r2-r9}\r
- \r
+\r
// If length is less than 32 then disable optim\r
movls r0, #0\r
- \r
+\r
cmp r12, #0\r
- \r
+\r
// Optimized memcopy - Write 32 Bytes\r
stmia r10!, {r2-r9}\r
\r
// while (length != 0)\r
bne memcopy_default_loop\r
- \r
+\r
memcopy_end:\r
mov r0, r11\r
ldmfd sp!, {r4-r11, pc}\r
- \r
+\r