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-rwxr-xr-xSource/DirectFB/lib/direct/armasm_memcpy.S421
1 files changed, 421 insertions, 0 deletions
diff --git a/Source/DirectFB/lib/direct/armasm_memcpy.S b/Source/DirectFB/lib/direct/armasm_memcpy.S
new file mode 100755
index 0000000..e422168
--- /dev/null
+++ b/Source/DirectFB/lib/direct/armasm_memcpy.S
@@ -0,0 +1,421 @@
+/*
+ * ARM memcpy asm replacement.
+ *
+ * Copyright (C) 2009 Bluush Dev Team.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <config.h>
+
+#if USE_ARMASM && !WORDS_BIGENDIAN
+
+#define _LABEL(f) f :
+
+.global direct_armasm_memcpy
+
+ .code 32
+
+_LABEL(direct_armasm_memcpy)
+ cmp r1, r0
+ bcc Lmemcpy_backwards
+
+ moveq r0, #0
+ moveq pc, lr
+
+ stmdb sp!, {r0, lr}
+ subs r2, r2, #4
+ blt Lmemcpy_fl4
+ ands r12, r0, #3
+ bne Lmemcpy_fdestul
+ ands r12, r1, #3
+ bne Lmemcpy_fsrcul
+
+_LABEL(Lmemcpy_ft8)
+ subs r2, r2, #8
+ blt Lmemcpy_fl12
+ subs r2, r2, #0x14
+ blt Lmemcpy_fl32
+ stmdb sp!, {r4}
+
+_LABEL(Lmemcpy_floop32)
+ ldmia r1!, {r3, r4, r12, lr}
+ stmia r0!, {r3, r4, r12, lr}
+ ldmia r1!, {r3, r4, r12, lr}
+ stmia r0!, {r3, r4, r12, lr}
+ subs r2, r2, #0x20
+ bge Lmemcpy_floop32
+
+ cmn r2, #0x10
+ ldmgeia r1!, {r3, r4, r12, lr}
+ stmgeia r0!, {r3, r4, r12, lr}
+ subge r2, r2, #0x10
+ ldmia sp!, {r4}
+
+_LABEL(Lmemcpy_fl32)
+ adds r2, r2, #0x14
+
+
+_LABEL(Lmemcpy_floop12)
+ ldmgeia r1!, {r3, r12, lr}
+ stmgeia r0!, {r3, r12, lr}
+ subges r2, r2, #0x0c
+ bge Lmemcpy_floop12
+
+_LABEL(Lmemcpy_fl12)
+ adds r2, r2, #8
+ blt Lmemcpy_fl4
+
+ subs r2, r2, #4
+ ldrlt r3, [r1], #4
+ strlt r3, [r0], #4
+ ldmgeia r1!, {r3, r12}
+ stmgeia r0!, {r3, r12}
+ subge r2, r2, #4
+
+_LABEL(Lmemcpy_fl4)
+ adds r2, r2, #4
+ ldmeqia sp!, {r0, pc}
+
+ cmp r2, #2
+ ldrb r3, [r1], #1
+ strb r3, [r0], #1
+ ldrgeb r3, [r1], #1
+ strgeb r3, [r0], #1
+ ldrgtb r3, [r1], #1
+ strgtb r3, [r0], #1
+ ldmia sp!, {r0, pc}
+
+
+_LABEL(Lmemcpy_fdestul)
+ rsb r12, r12, #4
+ cmp r12, #2
+
+ ldrb r3, [r1], #1
+ strb r3, [r0], #1
+ ldrgeb r3, [r1], #1
+ strgeb r3, [r0], #1
+ ldrgtb r3, [r1], #1
+ strgtb r3, [r0], #1
+ subs r2, r2, r12
+ blt Lmemcpy_fl4
+
+ ands r12, r1, #3
+ beq Lmemcpy_ft8
+
+
+_LABEL(Lmemcpy_fsrcul)
+ bic r1, r1, #3
+ ldr lr, [r1], #4
+ cmp r12, #2
+ bgt Lmemcpy_fsrcul3
+ beq Lmemcpy_fsrcul2
+ cmp r2, #0x0c
+ blt Lmemcpy_fsrcul1loop4
+ sub r2, r2, #0x0c
+ stmdb sp!, {r4, r5}
+
+_LABEL(Lmemcpy_fsrcul1loop16)
+ mov r3, lr, lsr #8
+ ldmia r1!, {r4, r5, r12, lr}
+ orr r3, r3, r4, lsl #24
+ mov r4, r4, lsr #8
+ orr r4, r4, r5, lsl #24
+ mov r5, r5, lsr #8
+ orr r5, r5, r12, lsl #24
+ mov r12, r12, lsr #8
+ orr r12, r12, lr, lsl #24
+ stmia r0!, {r3-r5, r12}
+ subs r2, r2, #0x10
+ bge Lmemcpy_fsrcul1loop16
+ ldmia sp!, {r4, r5}
+ adds r2, r2, #0x0c
+ blt Lmemcpy_fsrcul1l4
+
+_LABEL(Lmemcpy_fsrcul1loop4)
+ mov r12, lr, lsr #8
+ ldr lr, [r1], #4
+ orr r12, r12, lr, lsl #24
+ str r12, [r0], #4
+ subs r2, r2, #4
+ bge Lmemcpy_fsrcul1loop4
+
+_LABEL(Lmemcpy_fsrcul1l4)
+ sub r1, r1, #3
+ b Lmemcpy_fl4
+
+_LABEL(Lmemcpy_fsrcul2)
+ cmp r2, #0x0c
+ blt Lmemcpy_fsrcul2loop4
+ sub r2, r2, #0x0c
+ stmdb sp!, {r4, r5}
+
+_LABEL(Lmemcpy_fsrcul2loop16)
+ mov r3, lr, lsr #16
+ ldmia r1!, {r4, r5, r12, lr}
+ orr r3, r3, r4, lsl #16
+ mov r4, r4, lsr #16
+ orr r4, r4, r5, lsl #16
+ mov r5, r5, lsr #16
+ orr r5, r5, r12, lsl #16
+ mov r12, r12, lsr #16
+ orr r12, r12, lr, lsl #16
+ stmia r0!, {r3-r5, r12}
+ subs r2, r2, #0x10
+ bge Lmemcpy_fsrcul2loop16
+ ldmia sp!, {r4, r5}
+ adds r2, r2, #0x0c
+ blt Lmemcpy_fsrcul2l4
+
+_LABEL(Lmemcpy_fsrcul2loop4)
+ mov r12, lr, lsr #16
+ ldr lr, [r1], #4
+ orr r12, r12, lr, lsl #16
+ str r12, [r0], #4
+ subs r2, r2, #4
+ bge Lmemcpy_fsrcul2loop4
+
+_LABEL(Lmemcpy_fsrcul2l4)
+ sub r1, r1, #2
+ b Lmemcpy_fl4
+
+_LABEL(Lmemcpy_fsrcul3)
+ cmp r2, #0x0c
+ blt Lmemcpy_fsrcul3loop4
+ sub r2, r2, #0x0c
+ stmdb sp!, {r4, r5}
+
+_LABEL(Lmemcpy_fsrcul3loop16)
+ mov r3, lr, lsr #24
+ ldmia r1!, {r4, r5, r12, lr}
+ orr r3, r3, r4, lsl #8
+ mov r4, r4, lsr #24
+ orr r4, r4, r5, lsl #8
+ mov r5, r5, lsr #24
+ orr r5, r5, r12, lsl #8
+ mov r12, r12, lsr #24
+ orr r12, r12, lr, lsl #8
+ stmia r0!, {r3-r5, r12}
+ subs r2, r2, #0x10
+ bge Lmemcpy_fsrcul3loop16
+ ldmia sp!, {r4, r5}
+ adds r2, r2, #0x0c
+ blt Lmemcpy_fsrcul3l4
+
+_LABEL(Lmemcpy_fsrcul3loop4)
+ mov r12, lr, lsr #24
+ ldr lr, [r1], #4
+ orr r12, r12, lr, lsl #8
+ str r12, [r0], #4
+ subs r2, r2, #4
+ bge Lmemcpy_fsrcul3loop4
+
+_LABEL(Lmemcpy_fsrcul3l4)
+ sub r1, r1, #1
+ b Lmemcpy_fl4
+
+_LABEL(Lmemcpy_backwards)
+ add r1, r1, r2
+ add r0, r0, r2
+ subs r2, r2, #4
+ blt Lmemcpy_bl4
+ ands r12, r0, #3
+ bne Lmemcpy_bdestul
+ ands r12, r1, #3
+ bne Lmemcpy_bsrcul
+
+_LABEL(Lmemcpy_bt8)
+ subs r2, r2, #8
+ blt Lmemcpy_bl12
+ stmdb sp!, {r4, lr}
+ subs r2, r2, #0x14
+ blt Lmemcpy_bl32
+
+
+_LABEL(Lmemcpy_bloop32)
+ ldmdb r1!, {r3, r4, r12, lr}
+ stmdb r0!, {r3, r4, r12, lr}
+ ldmdb r1!, {r3, r4, r12, lr}
+ stmdb r0!, {r3, r4, r12, lr}
+ subs r2, r2, #0x20
+ bge Lmemcpy_bloop32
+
+_LABEL(Lmemcpy_bl32)
+ cmn r2, #0x10
+ ldmgedb r1!, {r3, r4, r12, lr}
+ stmgedb r0!, {r3, r4, r12, lr}
+ subge r2, r2, #0x10
+ adds r2, r2, #0x14
+ ldmgedb r1!, {r3, r12, lr}
+ stmgedb r0!, {r3, r12, lr}
+ subge r2, r2, #0x0c
+ ldmia sp!, {r4, lr}
+
+_LABEL(Lmemcpy_bl12)
+ adds r2, r2, #8
+ blt Lmemcpy_bl4
+ subs r2, r2, #4
+ ldrlt r3, [r1, #-4]!
+ strlt r3, [r0, #-4]!
+ ldmgedb r1!, {r3, r12}
+ stmgedb r0!, {r3, r12}
+ subge r2, r2, #4
+
+_LABEL(Lmemcpy_bl4)
+ adds r2, r2, #4
+ moveq pc, lr
+
+ cmp r2, #2
+ ldrb r3, [r1, #-1]!
+ strb r3, [r0, #-1]!
+ ldrgeb r3, [r1, #-1]!
+ strgeb r3, [r0, #-1]!
+ ldrgtb r3, [r1, #-1]!
+ strgtb r3, [r0, #-1]!
+ mov pc, lr
+
+
+_LABEL(Lmemcpy_bdestul)
+ cmp r12, #2
+
+ ldrb r3, [r1, #-1]!
+ strb r3, [r0, #-1]!
+ ldrgeb r3, [r1, #-1]!
+ strgeb r3, [r0, #-1]!
+ ldrgtb r3, [r1, #-1]!
+ strgtb r3, [r0, #-1]!
+ subs r2, r2, r12
+ blt Lmemcpy_bl4
+ ands r12, r1, #3
+ beq Lmemcpy_bt8
+
+
+_LABEL(Lmemcpy_bsrcul)
+ bic r1, r1, #3
+ ldr r3, [r1, #0]
+ cmp r12, #2
+ blt Lmemcpy_bsrcul1
+ beq Lmemcpy_bsrcul2
+ cmp r2, #0x0c
+ blt Lmemcpy_bsrcul3loop4
+ sub r2, r2, #0x0c
+ stmdb sp!, {r4, r5, lr}
+
+_LABEL(Lmemcpy_bsrcul3loop16)
+ mov lr, r3, lsl #8
+ ldmdb r1!, {r3-r5, r12}
+ orr lr, lr, r12, lsr #24
+ mov r12, r12, lsl #8
+ orr r12, r12, r5, lsr #24
+ mov r5, r5, lsl #8
+ orr r5, r5, r4, lsr #24
+ mov r4, r4, lsl #8
+ orr r4, r4, r3, lsr #24
+ stmdb r0!, {r4, r5, r12, lr}
+ subs r2, r2, #0x10
+ bge Lmemcpy_bsrcul3loop16
+ ldmia sp!, {r4, r5, lr}
+ adds r2, r2, #0x0c
+ blt Lmemcpy_bsrcul3l4
+
+_LABEL(Lmemcpy_bsrcul3loop4)
+ mov r12, r3, lsl #8
+ ldr r3, [r1, #-4]!
+ orr r12, r12, r3, lsr #24
+ str r12, [r0, #-4]!
+ subs r2, r2, #4
+ bge Lmemcpy_bsrcul3loop4
+
+_LABEL(Lmemcpy_bsrcul3l4)
+ add r1, r1, #3
+ b Lmemcpy_bl4
+
+_LABEL(Lmemcpy_bsrcul2)
+ cmp r2, #0x0c
+ blt Lmemcpy_bsrcul2loop4
+ sub r2, r2, #0x0c
+ stmdb sp!, {r4, r5, lr}
+
+_LABEL(Lmemcpy_bsrcul2loop16)
+ mov lr, r3, lsl #16
+ ldmdb r1!, {r3-r5, r12}
+ orr lr, lr, r12, lsr #16
+ mov r12, r12, lsl #16
+ orr r12, r12, r5, lsr #16
+ mov r5, r5, lsl #16
+ orr r5, r5, r4, lsr #16
+ mov r4, r4, lsl #16
+ orr r4, r4, r3, lsr #16
+ stmdb r0!, {r4, r5, r12, lr}
+ subs r2, r2, #0x10
+ bge Lmemcpy_bsrcul2loop16
+ ldmia sp!, {r4, r5, lr}
+ adds r2, r2, #0x0c
+ blt Lmemcpy_bsrcul2l4
+
+_LABEL(Lmemcpy_bsrcul2loop4)
+ mov r12, r3, lsl #16
+ ldr r3, [r1, #-4]!
+ orr r12, r12, r3, lsr #16
+ str r12, [r0, #-4]!
+ subs r2, r2, #4
+ bge Lmemcpy_bsrcul2loop4
+
+_LABEL(Lmemcpy_bsrcul2l4)
+ add r1, r1, #2
+ b Lmemcpy_bl4
+
+_LABEL(Lmemcpy_bsrcul1)
+ cmp r2, #0x0c
+ blt Lmemcpy_bsrcul1loop4
+ sub r2, r2, #0x0c
+ stmdb sp!, {r4, r5, lr}
+
+_LABEL(Lmemcpy_bsrcul1loop32)
+ mov lr, r3, lsl #24
+ ldmdb r1!, {r3-r5, r12}
+ orr lr, lr, r12, lsr #8
+ mov r12, r12, lsl #24
+ orr r12, r12, r5, lsr #8
+ mov r5, r5, lsl #24
+ orr r5, r5, r4, lsr #8
+ mov r4, r4, lsl #24
+ orr r4, r4, r3, lsr #8
+ stmdb r0!, {r4, r5, r12, lr}
+ subs r2, r2, #0x10
+ bge Lmemcpy_bsrcul1loop32
+ ldmia sp!, {r4, r5, lr}
+ adds r2, r2, #0x0c
+ blt Lmemcpy_bsrcul1l4
+
+_LABEL(Lmemcpy_bsrcul1loop4)
+ mov r12, r3, lsl #24
+ ldr r3, [r1, #-4]!
+ orr r12, r12, r3, lsr #8
+ str r12, [r0, #-4]!
+ subs r2, r2, #4
+ bge Lmemcpy_bsrcul1loop4
+
+_LABEL(Lmemcpy_bsrcul1l4)
+ add r1, r1, #1
+ b Lmemcpy_bl4
+
+
+ .ltorg
+
+#endif /* USE_ARMASM && !WORDS_BIGENDIAN */
+
+
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