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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [mips] Tracking ticket for big-endian N32/N64 ABI issues"
href="http://llvm.org/bugs/show_bug.cgi?id=20528">20528</a>
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<th>Summary</th>
<td>[mips] Tracking ticket for big-endian N32/N64 ABI issues
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>new bugs
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>daniel.sanders@imgtec.com
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>There appears to be a number of issues in the N32/N64 ABI's on big-endian
targets. The ones identified so far include:
* Stack arguments smaller than 64-bit are put in the wrong 32-bit word
* Likewise for va_arg
* Floating point stack arguments are correctly stored at the lowest part of the
address but their handling is tangled with integers so fixing the previous bugs
breaks this.
* i8, i16, i32 arguments are not promoted to i64 as per some documentation and
GCC.
* Structures are not stored in the lowest possible address</pre>
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