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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - LLVM's ld.lld doesn't support expressions in linker script for section's filling"
href="https://bugs.llvm.org/show_bug.cgi?id=42482">42482</a>
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<th>Summary</th>
<td>LLVM's ld.lld doesn't support expressions in linker script for section's filling
</td>
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<th>Product</th>
<td>lld
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>All Bugs
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>qwertytmp1@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, peter.smith@linaro.org
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<p>
<div>
<pre>This document
<a href="https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/4/html/Using_ld_the_GNU_Linker/sections.html#OUTPUT-SECTION-FILL">https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/4/html/Using_ld_the_GNU_Linker/sections.html#OUTPUT-SECTION-FILL</a>
states, that it is possible to fill section by expression.
It is not possible using lld.
Example:
- funnyos.lds.S:
```
#define FILL_EXPR \
(((INFINITE_LOOP_OPCODE >> 24) & 0xFF) | \
((INFINITE_LOOP_OPCODE << 8) & 0xFF0000) | \
((INFINITE_LOOP_OPCODE >> 8) & 0xFF00) | \
((INFINITE_LOOP_OPCODE << 24) & 0xFF000000))
...
SECTIONS
{
...
.init ALIGN(PAGE_SIZE) : {
_sinit_text = .;
...
*(.init.text)
_einit_text = .;
} = FILL_EXPR
...
}
```
P.S. Binutil's linker can do this.</pre>
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