vendor: OpenCV 5.0.0 snapshot at 40738fb16ceddb5fb3fea747585f7ce6abb0605b

2026-08-22 00:10:33 +08:00
commit f7f077da11
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+/*++
+
+Copyright (C) 2023 Loongson Technology Corporation Limited. All rights reserved.
+
+Licensed under the MIT License.
+
+Module Name:
+
+    asmmacro.h
+
+Abstract:
+
+    This module implements common macros for the assembly modules.
+
+--*/
+
+#define C_UNDERSCORE(symbol) symbol
+
+.macro vmove dst src
+    vand.v  \dst, \src, \src
+.endm
+
+/*++
+
+Macro Description:
+
+    This macro emits the assembler directives to annotate a new function.
+
+Arguments:
+
+    FunctionName - Supplies the name of the function.
+
+--*/
+
+        .macro FUNCTION_ENTRY FunctionName
+        .align 2
+        .globl  \FunctionName\()
+        .type   \FunctionName\(),@function
+\FunctionName\():
+
+        .endm
+
+/*++
+
+Macro Description:
+
+    This macro generates an optimization for "add reg,128" which can instead
+    be encoded as "sub reg,-128" to reduce code size by using a signed 8-bit
+    value.
+
+Arguments:
+
+    Register - Supplies the register to be added to.
+
+    Immediate - Supplies the immediate to add to the register.
+
+--*/
+
+        .macro add_immed Register, Immediate
+
+.if (\Immediate\() != 128)
+        addi.d     \Register\(),\Register\(),\Immediate\()
+.else
+        addi.d     \Register\(),\Register\(),\Immediate\() # smaller encoding
+.endif
+
+        .endm
+
+/*++
+
+Macro Description:
+
+    This macro conditionally emits the statement if Count is greater than or
+    equal to Value.
+
+Arguments:
+
+    Count - Supplies the variable used in the comparison.
+
+    Value - Supplies the static used in the comparison.
+
+    Statement - Supplies the statement to conditionally emit.
+
+--*/
+
+        .macro EmitIfCountGE Count1, Value1, Statement
+
+.if (\Count1\() >= \Value1\())
+        \Statement\()
+.endif
+
+        .endm
+
+/*++
+
+Macro Description:
+
+    This macro conditionally emits the statement if Count1 is greater than or
+    equal to Value1 and Count2 is greater than or equal to Value2.
+
+Arguments:
+
+    Count1 - Supplies the variable used in the comparison.
+
+    Value1 - Supplies the static used in the comparison.
+
+    Count2 - Supplies the variable used in the comparison.
+
+    Value2 - Supplies the static used in the comparison.
+
+    Statement - Supplies the statement to conditionally emit.
+
+--*/
+
+        .macro EmitIfCount2GE Count1, Value1, Count2, Value2, Statement
+
+.if (\Count1\() >= \Value1\()) && (\Count2\() >= \Value2\())
+        \Statement\()
+.endif
+
+        .endm
+
+/*++
+
+Macro Description:
+
+    This macro emits the statement for each register listed in the register
+    list. The statement can use RegItem to access the current register.
+
+Arguments:
+
+    RegList - Supplies the list of registers.
+
+    Statement - Supplies the statement to emit.
+
+--*/
+
+        .macro EmitForEachRegister RegList, Statement
+
+        .irp    RegItem, \RegList\()
+        \Statement\()
+        .endr
+
+        .endm