Adding dllimport, dllexport and external weak linkage types.
DLL* linkages got full (I hope) codegeneration support in C & both x86
assembler backends.
External weak linkage added for future use, we don't provide any
codegeneration, etc. support for it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30374 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/BytecodeFormat.html b/docs/BytecodeFormat.html
index 5117749..2b856a7 100644
--- a/docs/BytecodeFormat.html
+++ b/docs/BytecodeFormat.html
@@ -1025,7 +1025,8 @@
<tr>
<td><a href="#bit">bit(2-4)</a></td>
<td class="td_left">Linkage type: 0=External, 1=Weak,
-2=Appending, 3=Internal, 4=LinkOnce</td>
+ 2=Appending, 3=Internal, 4=LinkOnce, 5=DllImport,
+ 6=DllExport, 7=ExternWeak</td>
</tr>
<tr>
<td><a href="#bit">bit(5-31)</a></td>
@@ -1136,13 +1137,16 @@
<td><a href="#bit">bit(4)</a></td>
<td class="td_left">If this bit is set to 1, the indicated function is
external, and there is no <a href="#functiondefs">Function Definiton
- Block</a> in the bytecode file for the function.</td>
+ Block</a> in the bytecode file for the function. If the function is
+ external and has <tt>dllimport or extern_weak</tt> linkage additional
+ field in the extension word is used to indicate the actual linkage
+ type.</td>
</tr>
<tr>
<td><a href="#bit">bit(5-30)</a></td>
<td class="td_left">Type slot number of type for the function.</td>
</tr>
- <tr>
+ <tr>
<td><a href="#bit">bit(31)</a></td>
<td class="td_left">Indicates whether an extension word follows.</td>
</tr>
@@ -1171,7 +1175,12 @@
<td class="td_left">If this bit is set, a SectionID follows this vbr.</td>
</tr>
<tr>
- <td><a href="#bit">bit(11-31)</a></td>
+ <td><a href="#bit">bit(11-12)</a></td>
+ <td class="td_left">Linkage type for external functions. 0 - External
+ linkage, 1 - DLLImport linkage, 2 - External weak linkage.</td>
+ </tr>
+ <tr>
+ <td><a href="#bit">bit(13-31)</a></td>
<td class="td_left">Currently unassigned.</td>
</tr>
</tbody>
@@ -1410,8 +1419,8 @@
</tr>
<tr>
<td><a href="#uint32_vbr">uint32_vbr</a></td>
- <td class="td_left">The linkage type of the function: 0=External,
-1=Weak, 2=Appending, 3=Internal, 4=LinkOnce<sup>1</sup></td>
+ <td class="td_left">The linkage type of the function: 0=External, 1=Weak,
+2=Appending, 3=Internal, 4=LinkOnce, 5=DllImport, 6=DllExport<sup>1</sup></td>
</tr>
<tr>
<td><a href="#block">block</a></td>