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- /*
- * Alpha optimized DSP utils
- * Copyright (c) 2002 Falk Hueffner <falk@debian.org>
- *
- * This file is part of Libav.
- *
- * Libav 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 2.1 of the License, or (at your option) any later version.
- *
- * Libav 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 Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
- /*
- * These functions are scheduled for pca56. They should work
- * reasonably on ev6, though.
- */
-
- #include "regdef.h"
-
- .set noat
- .set noreorder
- .arch pca56
- .text
-
- /************************************************************************
- * void put_pixels_axp_asm(uint8_t *block, const uint8_t *pixels,
- * int line_size, int h)
- */
- .align 6
- .globl put_pixels_axp_asm
- .ent put_pixels_axp_asm
- put_pixels_axp_asm:
- .frame sp, 0, ra
- .prologue 0
-
- and a1, 7, t0
- beq t0, $aligned
-
- .align 4
- $unaligned:
- ldq_u t0, 0(a1)
- ldq_u t1, 8(a1)
- addq a1, a2, a1
- nop
-
- ldq_u t2, 0(a1)
- ldq_u t3, 8(a1)
- addq a1, a2, a1
- nop
-
- ldq_u t4, 0(a1)
- ldq_u t5, 8(a1)
- addq a1, a2, a1
- nop
-
- ldq_u t6, 0(a1)
- ldq_u t7, 8(a1)
- extql t0, a1, t0
- addq a1, a2, a1
-
- extqh t1, a1, t1
- addq a0, a2, t8
- extql t2, a1, t2
- addq t8, a2, t9
-
- extqh t3, a1, t3
- addq t9, a2, ta
- extql t4, a1, t4
- or t0, t1, t0
-
- extqh t5, a1, t5
- or t2, t3, t2
- extql t6, a1, t6
- or t4, t5, t4
-
- extqh t7, a1, t7
- or t6, t7, t6
- stq t0, 0(a0)
- stq t2, 0(t8)
-
- stq t4, 0(t9)
- subq a3, 4, a3
- stq t6, 0(ta)
- addq ta, a2, a0
-
- bne a3, $unaligned
- ret
-
- .align 4
- $aligned:
- ldq t0, 0(a1)
- addq a1, a2, a1
- ldq t1, 0(a1)
- addq a1, a2, a1
-
- ldq t2, 0(a1)
- addq a1, a2, a1
- ldq t3, 0(a1)
-
- addq a0, a2, t4
- addq a1, a2, a1
- addq t4, a2, t5
- subq a3, 4, a3
-
- stq t0, 0(a0)
- addq t5, a2, t6
- stq t1, 0(t4)
- addq t6, a2, a0
-
- stq t2, 0(t5)
- stq t3, 0(t6)
-
- bne a3, $aligned
- ret
- .end put_pixels_axp_asm
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