From 5134fefb529c2e2c63b500835b858d0c68bb7813 Mon Sep 17 00:00:00 2001
From: versat <versat@users.noreply.github.com>
Date: Mon, 1 Apr 2019 14:25:59 +0200
Subject: [PATCH] gnu.cfg: Add support for bswap*() macros.

---
 cfg/gnu.cfg | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/cfg/gnu.cfg b/cfg/gnu.cfg
index 0222896ad..fbf827a3b 100644
--- a/cfg/gnu.cfg
+++ b/cfg/gnu.cfg
@@ -22,6 +22,18 @@
     <alloc init="false" buffer-size="malloc">pvalloc</alloc>
     <dealloc>free</dealloc>
   </memory>
+  <define name="bswap_16(x)" value="((unsigned short int) ((((x) &gt;&gt; 8) &amp; 0xff) | (((x) &amp; 0xff) &lt;&lt; 8)))"/>
+  <define name="__bswap_constant_16(x)" value="bswap_16(x)"/>
+  <define name="__builtin_bswap16(x)" value="bswap_16(x)"/>
+  <define name="__bswap_16(x)" value="bswap_16(x)"/>
+  <define name="bswap_32(x)" value="((((x) &amp; 0xff000000) &gt;&gt; 24) | (((x) &amp; 0x00ff0000) &gt;&gt; 8) | (((x) &amp; 0x0000ff00) &lt;&lt; 8) | (((x) &amp; 0x000000ff) &lt;&lt; 24))"/>
+  <define name="__bswap_constant_32(x)" value="bswap_32(x)"/>
+  <define name="__builtin_bswap32(x)" value="bswap_32(x)"/>
+  <define name="__bswap_32(x)" value="bswap_32(x)"/>
+  <define name="bswap_64(x)" value="((((x) &amp; 0xff00000000000000ull) &gt;&gt; 56) | (((x) &amp; 0x00ff000000000000ull) &gt;&gt; 40) | (((x) &amp; 0x0000ff0000000000ull) &gt;&gt; 24) | (((x) &amp; 0x000000ff00000000ull) &gt;&gt; 8) | (((x) &amp; 0x00000000ff000000ull) &lt;&lt; 8) | (((x) &amp; 0x0000000000ff0000ull) &lt;&lt; 24) | (((x) &amp; 0x000000000000ff00ull) &lt;&lt; 40) | (((x) &amp; 0x00000000000000ffull) &lt;&lt; 56))"/>
+  <define name="__bswap_constant_64(x)" value="bswap_64(x)"/>
+  <define name="__builtin_bswap64(x)" value="bswap_64(x)"/>
+  <define name="__bswap_64(x)" value="bswap_64(x)"/>
   <!-- https://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html -->
   <define name="__builtin_alloca(size)" value="alloca(size)"/>
   <!-- void xexit(int status); -->