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-rw-r--r--media/libjpeg/simd/jsimd_mips_dspr2_asm.h285
1 files changed, 285 insertions, 0 deletions
diff --git a/media/libjpeg/simd/jsimd_mips_dspr2_asm.h b/media/libjpeg/simd/jsimd_mips_dspr2_asm.h
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index 000000000..64f988048
--- /dev/null
+++ b/media/libjpeg/simd/jsimd_mips_dspr2_asm.h
@@ -0,0 +1,285 @@
+/*
+ * MIPS DSPr2 optimizations for libjpeg-turbo
+ *
+ * Copyright (C) 2013, MIPS Technologies, Inc., California.
+ * All Rights Reserved.
+ * Authors: Teodora Novkovic (teodora.novkovic@imgtec.com)
+ * Darko Laus (darko.laus@imgtec.com)
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+ */
+
+#define zero $0
+#define AT $1
+#define v0 $2
+#define v1 $3
+#define a0 $4
+#define a1 $5
+#define a2 $6
+#define a3 $7
+#define t0 $8
+#define t1 $9
+#define t2 $10
+#define t3 $11
+#define t4 $12
+#define t5 $13
+#define t6 $14
+#define t7 $15
+#define s0 $16
+#define s1 $17
+#define s2 $18
+#define s3 $19
+#define s4 $20
+#define s5 $21
+#define s6 $22
+#define s7 $23
+#define t8 $24
+#define t9 $25
+#define k0 $26
+#define k1 $27
+#define gp $28
+#define sp $29
+#define fp $30
+#define s8 $30
+#define ra $31
+
+#define f0 $f0
+#define f1 $f1
+#define f2 $f2
+#define f3 $f3
+#define f4 $f4
+#define f5 $f5
+#define f6 $f6
+#define f7 $f7
+#define f8 $f8
+#define f9 $f9
+#define f10 $f10
+#define f11 $f11
+#define f12 $f12
+#define f13 $f13
+#define f14 $f14
+#define f15 $f15
+#define f16 $f16
+#define f17 $f17
+#define f18 $f18
+#define f19 $f19
+#define f20 $f20
+#define f21 $f21
+#define f22 $f22
+#define f23 $f23
+#define f24 $f24
+#define f25 $f25
+#define f26 $f26
+#define f27 $f27
+#define f28 $f28
+#define f29 $f29
+#define f30 $f30
+#define f31 $f31
+
+/*
+ * LEAF_MIPS32R2 - declare leaf routine for MIPS32r2
+ */
+#define LEAF_MIPS32R2(symbol) \
+ .globl symbol; \
+ .align 2; \
+ .type symbol, @function; \
+ .ent symbol, 0; \
+symbol: .frame sp, 0, ra; \
+ .set push; \
+ .set arch=mips32r2; \
+ .set noreorder; \
+ .set noat;
+
+/*
+ * LEAF_MIPS_DSPR2 - declare leaf routine for MIPS DSPr2
+ */
+#define LEAF_MIPS_DSPR2(symbol) \
+LEAF_MIPS32R2(symbol) \
+ .set dspr2;
+
+/*
+ * END - mark end of function
+ */
+#define END(function) \
+ .set pop; \
+ .end function; \
+ .size function,.-function
+
+/*
+ * Checks if stack offset is big enough for storing/restoring regs_num
+ * number of register to/from stack. Stack offset must be greater than
+ * or equal to the number of bytes needed for storing registers (regs_num*4).
+ * Since MIPS ABI allows usage of first 16 bytes of stack frame (this is
+ * preserved for input arguments of the functions, already stored in a0-a3),
+ * stack size can be further optimized by utilizing this space.
+ */
+.macro CHECK_STACK_OFFSET regs_num, stack_offset
+.if \stack_offset < \regs_num * 4 - 16
+.error "Stack offset too small."
+.endif
+.endm
+
+/*
+ * Saves set of registers on stack. Maximum number of registers that
+ * can be saved on stack is limitted to 14 (a0-a3, v0-v1 and s0-s7).
+ * Stack offset is number of bytes that are added to stack pointer (sp)
+ * before registers are pushed in order to provide enough space on stack
+ * (offset must be multiple of 4, and must be big enough, as described by
+ * CHECK_STACK_OFFSET macro). This macro is intended to be used in
+ * combination with RESTORE_REGS_FROM_STACK macro. Example:
+ * SAVE_REGS_ON_STACK 4, v0, v1, s0, s1
+ * RESTORE_REGS_FROM_STACK 4, v0, v1, s0, s1
+ */
+.macro SAVE_REGS_ON_STACK stack_offset = 0, r1, \
+ r2 = 0, r3 = 0, r4 = 0, \
+ r5 = 0, r6 = 0, r7 = 0, \
+ r8 = 0, r9 = 0, r10 = 0, \
+ r11 = 0, r12 = 0, r13 = 0, \
+ r14 = 0
+ .if (\stack_offset < 0) || (\stack_offset - (\stack_offset / 4) * 4)
+ .error "Stack offset must be pozitive and multiple of 4."
+ .endif
+ .if \stack_offset != 0
+ addiu sp, sp, -\stack_offset
+ .endif
+ sw \r1, 0(sp)
+ .if \r2 != 0
+ sw \r2, 4(sp)
+ .endif
+ .if \r3 != 0
+ sw \r3, 8(sp)
+ .endif
+ .if \r4 != 0
+ sw \r4, 12(sp)
+ .endif
+ .if \r5 != 0
+ CHECK_STACK_OFFSET 5, \stack_offset
+ sw \r5, 16(sp)
+ .endif
+ .if \r6 != 0
+ CHECK_STACK_OFFSET 6, \stack_offset
+ sw \r6, 20(sp)
+ .endif
+ .if \r7 != 0
+ CHECK_STACK_OFFSET 7, \stack_offset
+ sw \r7, 24(sp)
+ .endif
+ .if \r8 != 0
+ CHECK_STACK_OFFSET 8, \stack_offset
+ sw \r8, 28(sp)
+ .endif
+ .if \r9 != 0
+ CHECK_STACK_OFFSET 9, \stack_offset
+ sw \r9, 32(sp)
+ .endif
+ .if \r10 != 0
+ CHECK_STACK_OFFSET 10, \stack_offset
+ sw \r10, 36(sp)
+ .endif
+ .if \r11 != 0
+ CHECK_STACK_OFFSET 11, \stack_offset
+ sw \r11, 40(sp)
+ .endif
+ .if \r12 != 0
+ CHECK_STACK_OFFSET 12, \stack_offset
+ sw \r12, 44(sp)
+ .endif
+ .if \r13 != 0
+ CHECK_STACK_OFFSET 13, \stack_offset
+ sw \r13, 48(sp)
+ .endif
+ .if \r14 != 0
+ CHECK_STACK_OFFSET 14, \stack_offset
+ sw \r14, 52(sp)
+ .endif
+.endm
+
+/*
+ * Restores set of registers from stack. Maximum number of registers that
+ * can be restored from stack is limitted to 14 (a0-a3, v0-v1 and s0-s7).
+ * Stack offset is number of bytes that are added to stack pointer (sp)
+ * after registers are restored (offset must be multiple of 4, and must
+ * be big enough, as described by CHECK_STACK_OFFSET macro). This macro is
+ * intended to be used in combination with RESTORE_REGS_FROM_STACK macro.
+ * Example:
+ * SAVE_REGS_ON_STACK 4, v0, v1, s0, s1
+ * RESTORE_REGS_FROM_STACK 4, v0, v1, s0, s1
+ */
+.macro RESTORE_REGS_FROM_STACK stack_offset = 0, r1, \
+ r2 = 0, r3 = 0, r4 = 0, \
+ r5 = 0, r6 = 0, r7 = 0, \
+ r8 = 0, r9 = 0, r10 = 0, \
+ r11 = 0, r12 = 0, r13 = 0, \
+ r14 = 0
+ .if (\stack_offset < 0) || (\stack_offset - (\stack_offset/4)*4)
+ .error "Stack offset must be pozitive and multiple of 4."
+ .endif
+ lw \r1, 0(sp)
+ .if \r2 != 0
+ lw \r2, 4(sp)
+ .endif
+ .if \r3 != 0
+ lw \r3, 8(sp)
+ .endif
+ .if \r4 != 0
+ lw \r4, 12(sp)
+ .endif
+ .if \r5 != 0
+ CHECK_STACK_OFFSET 5, \stack_offset
+ lw \r5, 16(sp)
+ .endif
+ .if \r6 != 0
+ CHECK_STACK_OFFSET 6, \stack_offset
+ lw \r6, 20(sp)
+ .endif
+ .if \r7 != 0
+ CHECK_STACK_OFFSET 7, \stack_offset
+ lw \r7, 24(sp)
+ .endif
+ .if \r8 != 0
+ CHECK_STACK_OFFSET 8, \stack_offset
+ lw \r8, 28(sp)
+ .endif
+ .if \r9 != 0
+ CHECK_STACK_OFFSET 9, \stack_offset
+ lw \r9, 32(sp)
+ .endif
+ .if \r10 != 0
+ CHECK_STACK_OFFSET 10, \stack_offset
+ lw \r10, 36(sp)
+ .endif
+ .if \r11 != 0
+ CHECK_STACK_OFFSET 11, \stack_offset
+ lw \r11, 40(sp)
+ .endif
+ .if \r12 != 0
+ CHECK_STACK_OFFSET 12, \stack_offset
+ lw \r12, 44(sp)
+ .endif
+ .if \r13 != 0
+ CHECK_STACK_OFFSET 13, \stack_offset
+ lw \r13, 48(sp)
+ .endif
+ .if \r14 != 0
+ CHECK_STACK_OFFSET 14, \stack_offset
+ lw \r14, 52(sp)
+ .endif
+ .if \stack_offset != 0
+ addiu sp, sp, \stack_offset
+ .endif
+.endm
+
+