From fdf71d486c0f85dadea2b5e97b88d4a67e2be34c Mon Sep 17 00:00:00 2001
From: Ronak Chauhan <RonakNilesh.Chauhan@amd.com>
Date: Wed, 19 Aug 2020 13:07:40 +0530
Subject: Revert "[AMDGPU] Support disassembly for AMDGPU kernel descriptors"

This reverts commit cacfb02d28a3cabd4e45d2535cb0686cef48a2c9.

Reverting due to buildbot failures.
---
 llvm/tools/llvm-objdump/llvm-objdump.cpp | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'llvm/tools/llvm-objdump/llvm-objdump.cpp')

diff --git a/llvm/tools/llvm-objdump/llvm-objdump.cpp b/llvm/tools/llvm-objdump/llvm-objdump.cpp
index acc0591..6b3ecd9 100644
--- a/llvm/tools/llvm-objdump/llvm-objdump.cpp
+++ b/llvm/tools/llvm-objdump/llvm-objdump.cpp
@@ -1849,6 +1849,23 @@ static void disassembleObject(const Target *TheTarget, const ObjectFile *Obj,
         outs() << SectionName << ":\n";
       }
 
+      if (Obj->isELF() && Obj->getArch() == Triple::amdgcn) {
+        if (Symbols[SI].Type == ELF::STT_AMDGPU_HSA_KERNEL) {
+          // skip amd_kernel_code_t at the begining of kernel symbol (256 bytes)
+          Start += 256;
+        }
+        if (SI == SE - 1 ||
+            Symbols[SI + 1].Type == ELF::STT_AMDGPU_HSA_KERNEL) {
+          // cut trailing zeroes at the end of kernel
+          // cut up to 256 bytes
+          const uint64_t EndAlign = 256;
+          const auto Limit = End - (std::min)(EndAlign, End - Start);
+          while (End > Limit &&
+            *reinterpret_cast<const support::ulittle32_t*>(&Bytes[End - 4]) == 0)
+            End -= 4;
+        }
+      }
+
       outs() << '\n';
       if (!NoLeadingAddr)
         outs() << format(Is64Bits ? "%016" PRIx64 " " : "%08" PRIx64 " ",
-- 
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