vendor: OpenCV 5.0.0 snapshot at 40738fb16ceddb5fb3fea747585f7ce6abb0605b

2026-08-22 00:10:33 +08:00
commit f7f077da11
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+/*++
+
+Copyright (c) Microsoft Corporation. All rights reserved.
+
+Licensed under the MIT License.
+
+Module Name:
+
+    asmmacro.h
+
+Abstract:
+
+    This module implements common macros for the assembly modules.
+
+--*/
+
+#if defined(__APPLE__)
+#define C_UNDERSCORE(symbol) _##symbol
+#else
+#define C_UNDERSCORE(symbol) symbol
+#endif
+
+/*++
+
+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
+
+        .p2align 4
+#if defined(__APPLE__)
+        .globl  _\FunctionName\()
+_\FunctionName\():
+#else
+        .globl  \FunctionName\()
+        .type   \FunctionName\(),@function
+\FunctionName\():
+#endif
+
+        .endm
+
+/*++
+
+Macro Description:
+
+    This macro emits the code to load the global offset table address into the
+    supplied register.
+
+Arguments:
+
+    TargetReg - Specifies the target register.
+
+--*/
+
+        .macro  LoadGlobalOffsetTable, TargetReg
+
+//
+// The LLVM integrated assembler doesn't support the Intel syntax for OFFSET:
+//
+//      add     ebx,OFFSET _GLOBAL_OFFSET_TABLE_
+//
+// Workaround this by temporarily switching to AT&T syntax.
+//
+
+        .att_syntax
+
+        calll   __x86.get_pc_thunk.\TargetReg\()
+        addl    $_GLOBAL_OFFSET_TABLE_,%e\TargetReg\()
+
+        .intel_syntax noprefix
+
+        .endm