From d7e2096b65b40c0130aa2d6e4d6047524893a302 Mon Sep 17 00:00:00 2001
From: HimanshuChoudhary-Xilinx
 <114978536+HimanshuChoudhary-Xilinx@users.noreply.github.com>
Date: Wed, 13 Mar 2024 21:37:40 +0530
Subject: [PATCH] add xrt::elf raw elf data constructor (#7963)

* add xrt::elf raw elf data constructor

* rename

* review comment

* review comments

Signed-off-by: HimanshuChoudhary-Xilinx <choudhar@amd.com>

---------

Signed-off-by: HimanshuChoudhary-Xilinx <choudhar@amd.com>
---
 src/runtime_src/core/common/api/xrt_elf.cpp         | 11 +++++++++++
 src/runtime_src/core/include/experimental/xrt_elf.h | 13 ++++++++++++-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/src/runtime_src/core/common/api/xrt_elf.cpp b/src/runtime_src/core/common/api/xrt_elf.cpp
index eacb89058cc..39043cfd792 100644
--- a/src/runtime_src/core/common/api/xrt_elf.cpp
+++ b/src/runtime_src/core/common/api/xrt_elf.cpp
@@ -28,6 +28,12 @@ class elf_impl
       throw std::runtime_error(fnm + " is not found or is not a valid ELF file");
   }
 
+  elf_impl(std::istream& stream)
+  {
+    if (!m_elf.load(stream))
+      throw std::runtime_error("not a valid ELF stream");
+  }
+
   const ELFIO::elfio&
   get_elfio() const
   {
@@ -85,6 +91,11 @@ elf(const std::string& fnm)
   : detail::pimpl<elf_impl>{std::make_shared<elf_impl>(fnm)}
 {}
 
+elf::
+elf(std::istream& stream)
+  : detail::pimpl<elf_impl>{std::make_shared<elf_impl>(stream)}
+{}
+
 xrt::uuid
 elf::
 get_cfg_uuid() const
diff --git a/src/runtime_src/core/include/experimental/xrt_elf.h b/src/runtime_src/core/include/experimental/xrt_elf.h
index eff052332cb..d333adb8db5 100644
--- a/src/runtime_src/core/include/experimental/xrt_elf.h
+++ b/src/runtime_src/core/include/experimental/xrt_elf.h
@@ -9,6 +9,7 @@
 
 #ifdef __cplusplus
 # include <string>
+# include <istream>
 #endif
 
 #ifdef __cplusplus
@@ -32,7 +33,17 @@ class elf : public detail::pimpl<elf_impl>
 public:
   XRT_API_EXPORT
   elf(const std::string& fnm);
-  
+
+  /**
+   * elf() - Constructor from raw ELF data
+   *
+   * @param data
+   *  Raw data of elf
+   *
+   */
+  XRT_API_EXPORT
+  elf(std::istream& stream);
+
   XRT_API_EXPORT
   xrt::uuid
   get_cfg_uuid() const;