Update to libjpeg_turbo 1.4.90

simd/jsimd_mips_dspr2_asm.h

+/*
+ * 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
+
+