<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `src/reg.rs`."><title>reg.rs - source</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-46f98efaafac5295.ttf.woff2,FiraSans-Regular-018c141bf0843ffd.woff2,FiraSans-Medium-8f9a781e4970d388.woff2,SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2,SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-b0742ba02757f159.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="juicebox_asm" data-themes="" data-resource-suffix="" data-rustdoc-version="1.83.0 (90b35a623 2024-11-26)" data-channel="1.83.0" data-search-js="search-f0d225181b97f9a4.js" data-settings-js="settings-805db61a62df4bd2.js" ><script src="../../static.files/storage-1d39b6787ed640ff.js"></script><script defer src="../../static.files/src-script-e66d777a5a92e9b2.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-f070b9041d14864c.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-0111fcff984fae8f.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="src-sidebar-title"><h2>Files</h2></div></nav><div class="sidebar-resizer"></div><main><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><h1><div class="sub-heading">juicebox_asm/</div>reg.rs</h1><rustdoc-toolbar></rustdoc-toolbar></div><div class="example-wrap"><div data-nosnippet><pre class="src-line-numbers">
<a href="#1" id="1">1</a>
<a href="#2" id="2">2</a>
<a href="#3" id="3">3</a>
<a href="#4" id="4">4</a>
<a href="#5" id="5">5</a>
<a href="#6" id="6">6</a>
<a href="#7" id="7">7</a>
<a href="#8" id="8">8</a>
<a href="#9" id="9">9</a>
<a href="#10" id="10">10</a>
<a href="#11" id="11">11</a>
<a href="#12" id="12">12</a>
<a href="#13" id="13">13</a>
<a href="#14" id="14">14</a>
<a href="#15" id="15">15</a>
<a href="#16" id="16">16</a>
<a href="#17" id="17">17</a>
<a href="#18" id="18">18</a>
<a href="#19" id="19">19</a>
<a href="#20" id="20">20</a>
<a href="#21" id="21">21</a>
<a href="#22" id="22">22</a>
<a href="#23" id="23">23</a>
<a href="#24" id="24">24</a>
<a href="#25" id="25">25</a>
<a href="#26" id="26">26</a>
<a href="#27" id="27">27</a>
<a href="#28" id="28">28</a>
<a href="#29" id="29">29</a>
<a href="#30" id="30">30</a>
<a href="#31" id="31">31</a>
<a href="#32" id="32">32</a>
<a href="#33" id="33">33</a>
<a href="#34" id="34">34</a>
<a href="#35" id="35">35</a>
<a href="#36" id="36">36</a>
<a href="#37" id="37">37</a>
<a href="#38" id="38">38</a>
<a href="#39" id="39">39</a>
<a href="#40" id="40">40</a>
<a href="#41" id="41">41</a>
<a href="#42" id="42">42</a>
<a href="#43" id="43">43</a>
<a href="#44" id="44">44</a>
<a href="#45" id="45">45</a>
<a href="#46" id="46">46</a>
<a href="#47" id="47">47</a>
<a href="#48" id="48">48</a>
<a href="#49" id="49">49</a>
<a href="#50" id="50">50</a>
<a href="#51" id="51">51</a>
<a href="#52" id="52">52</a>
<a href="#53" id="53">53</a>
<a href="#54" id="54">54</a>
<a href="#55" id="55">55</a>
<a href="#56" id="56">56</a>
<a href="#57" id="57">57</a>
<a href="#58" id="58">58</a>
<a href="#59" id="59">59</a>
<a href="#60" id="60">60</a>
<a href="#61" id="61">61</a>
<a href="#62" id="62">62</a>
<a href="#63" id="63">63</a>
<a href="#64" id="64">64</a>
<a href="#65" id="65">65</a>
<a href="#66" id="66">66</a>
<a href="#67" id="67">67</a>
<a href="#68" id="68">68</a>
<a href="#69" id="69">69</a>
<a href="#70" id="70">70</a>
<a href="#71" id="71">71</a>
<a href="#72" id="72">72</a>
<a href="#73" id="73">73</a>
<a href="#74" id="74">74</a>
<a href="#75" id="75">75</a>
<a href="#76" id="76">76</a>
<a href="#77" id="77">77</a>
<a href="#78" id="78">78</a>
<a href="#79" id="79">79</a>
<a href="#80" id="80">80</a>
<a href="#81" id="81">81</a>
<a href="#82" id="82">82</a>
<a href="#83" id="83">83</a>
<a href="#84" id="84">84</a>
<a href="#85" id="85">85</a>
<a href="#86" id="86">86</a>
<a href="#87" id="87">87</a>
<a href="#88" id="88">88</a>
<a href="#89" id="89">89</a>
<a href="#90" id="90">90</a>
<a href="#91" id="91">91</a>
<a href="#92" id="92">92</a>
<a href="#93" id="93">93</a>
<a href="#94" id="94">94</a>
<a href="#95" id="95">95</a>
<a href="#96" id="96">96</a>
<a href="#97" id="97">97</a>
<a href="#98" id="98">98</a>
<a href="#99" id="99">99</a>
<a href="#100" id="100">100</a>
<a href="#101" id="101">101</a>
<a href="#102" id="102">102</a>
<a href="#103" id="103">103</a>
<a href="#104" id="104">104</a>
<a href="#105" id="105">105</a>
<a href="#106" id="106">106</a>
<a href="#107" id="107">107</a>
<a href="#108" id="108">108</a>
<a href="#109" id="109">109</a>
<a href="#110" id="110">110</a>
<a href="#111" id="111">111</a>
<a href="#112" id="112">112</a>
<a href="#113" id="113">113</a>
<a href="#114" id="114">114</a>
<a href="#115" id="115">115</a>
<a href="#116" id="116">116</a>
<a href="#117" id="117">117</a>
<a href="#118" id="118">118</a>
<a href="#119" id="119">119</a>
<a href="#120" id="120">120</a>
<a href="#121" id="121">121</a>
<a href="#122" id="122">122</a>
<a href="#123" id="123">123</a>
<a href="#124" id="124">124</a>
<a href="#125" id="125">125</a>
<a href="#126" id="126">126</a>
<a href="#127" id="127">127</a>
<a href="#128" id="128">128</a>
<a href="#129" id="129">129</a>
<a href="#130" id="130">130</a>
<a href="#131" id="131">131</a>
<a href="#132" id="132">132</a>
<a href="#133" id="133">133</a>
<a href="#134" id="134">134</a>
<a href="#135" id="135">135</a>
<a href="#136" id="136">136</a>
<a href="#137" id="137">137</a>
<a href="#138" id="138">138</a>
<a href="#139" id="139">139</a>
<a href="#140" id="140">140</a>
<a href="#141" id="141">141</a>
<a href="#142" id="142">142</a>
<a href="#143" id="143">143</a>
<a href="#144" id="144">144</a>
<a href="#145" id="145">145</a>
<a href="#146" id="146">146</a>
<a href="#147" id="147">147</a>
<a href="#148" id="148">148</a>
<a href="#149" id="149">149</a>
<a href="#150" id="150">150</a>
<a href="#151" id="151">151</a>
<a href="#152" id="152">152</a>
<a href="#153" id="153">153</a>
<a href="#154" id="154">154</a>
<a href="#155" id="155">155</a>
<a href="#156" id="156">156</a>
<a href="#157" id="157">157</a>
<a href="#158" id="158">158</a>
<a href="#159" id="159">159</a>
<a href="#160" id="160">160</a>
<a href="#161" id="161">161</a>
<a href="#162" id="162">162</a>
<a href="#163" id="163">163</a>
<a href="#164" id="164">164</a>
<a href="#165" id="165">165</a>
<a href="#166" id="166">166</a>
<a href="#167" id="167">167</a>
<a href="#168" id="168">168</a>
<a href="#169" id="169">169</a>
<a href="#170" id="170">170</a>
<a href="#171" id="171">171</a>
<a href="#172" id="172">172</a>
<a href="#173" id="173">173</a>
<a href="#174" id="174">174</a>
<a href="#175" id="175">175</a>
<a href="#176" id="176">176</a>
<a href="#177" id="177">177</a>
<a href="#178" id="178">178</a>
<a href="#179" id="179">179</a>
<a href="#180" id="180">180</a>
<a href="#181" id="181">181</a>
<a href="#182" id="182">182</a>
<a href="#183" id="183">183</a>
<a href="#184" id="184">184</a>
<a href="#185" id="185">185</a>
<a href="#186" id="186">186</a>
<a href="#187" id="187">187</a>
<a href="#188" id="188">188</a>
<a href="#189" id="189">189</a>
<a href="#190" id="190">190</a>
<a href="#191" id="191">191</a>
<a href="#192" id="192">192</a>
<a href="#193" id="193">193</a>
<a href="#194" id="194">194</a>
<a href="#195" id="195">195</a>
<a href="#196" id="196">196</a>
<a href="#197" id="197">197</a>
<a href="#198" id="198">198</a>
<a href="#199" id="199">199</a>
<a href="#200" id="200">200</a>
<a href="#201" id="201">201</a>
<a href="#202" id="202">202</a>
<a href="#203" id="203">203</a>
<a href="#204" id="204">204</a>
<a href="#205" id="205">205</a>
<a href="#206" id="206">206</a>
<a href="#207" id="207">207</a>
<a href="#208" id="208">208</a>
<a href="#209" id="209">209</a>
<a href="#210" id="210">210</a>
<a href="#211" id="211">211</a>
<a href="#212" id="212">212</a>
<a href="#213" id="213">213</a>
<a href="#214" id="214">214</a>
<a href="#215" id="215">215</a>
<a href="#216" id="216">216</a>
<a href="#217" id="217">217</a>
<a href="#218" id="218">218</a>
<a href="#219" id="219">219</a>
<a href="#220" id="220">220</a>
<a href="#221" id="221">221</a>
<a href="#222" id="222">222</a>
<a href="#223" id="223">223</a>
<a href="#224" id="224">224</a>
<a href="#225" id="225">225</a>
<a href="#226" id="226">226</a>
<a href="#227" id="227">227</a>
<a href="#228" id="228">228</a>
<a href="#229" id="229">229</a>
<a href="#230" id="230">230</a>
<a href="#231" id="231">231</a>
<a href="#232" id="232">232</a>
<a href="#233" id="233">233</a>
<a href="#234" id="234">234</a>
<a href="#235" id="235">235</a>
<a href="#236" id="236">236</a>
<a href="#237" id="237">237</a>
<a href="#238" id="238">238</a>
<a href="#239" id="239">239</a>
<a href="#240" id="240">240</a>
<a href="#241" id="241">241</a>
<a href="#242" id="242">242</a>
<a href="#243" id="243">243</a>
<a href="#244" id="244">244</a>
<a href="#245" id="245">245</a>
<a href="#246" id="246">246</a>
<a href="#247" id="247">247</a>
<a href="#248" id="248">248</a>
<a href="#249" id="249">249</a>
<a href="#250" id="250">250</a>
<a href="#251" id="251">251</a>
<a href="#252" id="252">252</a>
<a href="#253" id="253">253</a>
<a href="#254" id="254">254</a>
<a href="#255" id="255">255</a>
<a href="#256" id="256">256</a>
<a href="#257" id="257">257</a>
<a href="#258" id="258">258</a>
<a href="#259" id="259">259</a>
<a href="#260" id="260">260</a>
<a href="#261" id="261">261</a>
<a href="#262" id="262">262</a>
<a href="#263" id="263">263</a>
<a href="#264" id="264">264</a>
<a href="#265" id="265">265</a>
<a href="#266" id="266">266</a>
<a href="#267" id="267">267</a>
<a href="#268" id="268">268</a>
<a href="#269" id="269">269</a>
<a href="#270" id="270">270</a>
<a href="#271" id="271">271</a>
<a href="#272" id="272">272</a>
<a href="#273" id="273">273</a>
<a href="#274" id="274">274</a>
<a href="#275" id="275">275</a>
<a href="#276" id="276">276</a>
<a href="#277" id="277">277</a>
<a href="#278" id="278">278</a>
<a href="#279" id="279">279</a>
<a href="#280" id="280">280</a>
<a href="#281" id="281">281</a>
<a href="#282" id="282">282</a>
<a href="#283" id="283">283</a>
<a href="#284" id="284">284</a>
<a href="#285" id="285">285</a>
<a href="#286" id="286">286</a>
<a href="#287" id="287">287</a>
<a href="#288" id="288">288</a>
<a href="#289" id="289">289</a>
<a href="#290" id="290">290</a>
<a href="#291" id="291">291</a>
<a href="#292" id="292">292</a>
<a href="#293" id="293">293</a>
<a href="#294" id="294">294</a>
<a href="#295" id="295">295</a>
<a href="#296" id="296">296</a>
<a href="#297" id="297">297</a>
<a href="#298" id="298">298</a>
<a href="#299" id="299">299</a>
<a href="#300" id="300">300</a>
<a href="#301" id="301">301</a>
<a href="#302" id="302">302</a>
<a href="#303" id="303">303</a>
<a href="#304" id="304">304</a></pre></div><pre class="rust"><code><span class="doccomment">//! Definition of registers which are used as input operands for various instructions.
/// Trait to interact with register operands.
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">trait </span>Reg {
<span class="doccomment">/// Get the raw x64 register code.
</span><span class="kw">fn </span>idx(<span class="kw-2">&</span><span class="self">self</span>) -> u8;
<span class="doccomment">/// Check if the registers needs the `REX.W` bit.
</span><span class="kw">fn </span>rexw(<span class="kw-2">&</span><span class="self">self</span>) -> bool;
<span class="doccomment">/// Check if the register is an extended registers.
</span><span class="kw">fn </span>is_ext(<span class="kw-2">&</span><span class="self">self</span>) -> bool {
<span class="self">self</span>.idx() > <span class="number">7
</span>}
<span class="doccomment">/// Check if the register requires a `REX` byte.
</span><span class="kw">fn </span>need_rex(<span class="kw-2">&</span><span class="self">self</span>) -> bool {
<span class="self">self</span>.is_ext() || <span class="self">self</span>.rexw()
}
<span class="doccomment">/// Check if the register requires a `SIB` byte if used as addressing operand.
///
/// See [64 bit
/// addressing](https://wiki.osdev.org/X86-64_Instruction_Encoding#32.2F64-bit_addressing) for
/// further details.
</span><span class="kw">fn </span>need_sib(<span class="kw-2">&</span><span class="self">self</span>) -> bool {
<span class="self">self</span>.idx() == <span class="number">4 </span>|| <span class="self">self</span>.idx() == <span class="number">12
</span>}
<span class="doccomment">/// Check if the register is interpreted as `PC` relative if used as addressing operand.
///
/// See [64 bit
/// addressing](https://wiki.osdev.org/X86-64_Instruction_Encoding#32.2F64-bit_addressing) for
/// further details.
</span><span class="kw">fn </span>is_pc_rel(<span class="kw-2">&</span><span class="self">self</span>) -> bool {
<span class="self">self</span>.idx() == <span class="number">5 </span>|| <span class="self">self</span>.idx() == <span class="number">13
</span>}
}
<span class="macro">macro_rules!</span> enum_reg {
(<span class="attr">#[<span class="macro-nonterminal">$doc</span>:meta] </span><span class="macro-nonterminal">$name</span>:ident, { $(<span class="macro-nonterminal">$reg</span>:ident),+ $(,)<span class="question-mark">? </span>}) => {
<span class="attr">#[<span class="macro-nonterminal">$doc</span>]
#[allow(non_camel_case_types)]
#[derive(Copy, Clone)]
#[repr(u8)]
</span><span class="kw">pub enum </span><span class="macro-nonterminal">$name </span>{
$( <span class="macro-nonterminal">$reg</span>, )+
}
<span class="attr">#[cfg(test)]
</span><span class="kw">impl </span><span class="macro-nonterminal">$name </span>{
<span class="kw">fn </span>iter() -> <span class="kw">impl </span>Iterator<Item = <span class="kw-2">&</span><span class="lifetime">'static </span><span class="macro-nonterminal">$name</span>> {
<span class="kw">use </span><span class="macro-nonterminal">$name</span>::<span class="kw-2">*</span>;
[$( <span class="macro-nonterminal">$reg</span>, )+].iter()
}
}
};
}
<span class="macro">macro_rules!</span> impl_reg {
(<span class="attr">#[<span class="macro-nonterminal">$doc</span>:meta] </span><span class="macro-nonterminal">$name</span>:ident, <span class="macro-nonterminal">$rexw</span>:expr, { $(<span class="macro-nonterminal">$reg</span>:ident),+ $(,)<span class="question-mark">? </span>}) => {
<span class="macro">enum_reg!</span>(<span class="attr">#[<span class="macro-nonterminal">$doc</span>] </span><span class="macro-nonterminal">$name</span>, { $( <span class="macro-nonterminal">$reg</span>, )+ });
<span class="kw">impl </span>Reg <span class="kw">for </span><span class="macro-nonterminal">$name </span>{
<span class="doccomment">/// Get the raw x64 register code.
</span><span class="kw">fn </span>idx(<span class="kw-2">&</span><span class="self">self</span>) -> u8 {
<span class="kw-2">*</span><span class="self">self </span><span class="kw">as </span>u8
}
<span class="doccomment">/// Check if the registers needs the `REX.W` bit.
</span><span class="kw">fn </span>rexw(<span class="kw-2">&</span><span class="self">self</span>) -> bool {
<span class="macro-nonterminal">$rexw
</span>}
}
}
}
<span class="macro">impl_reg!</span>(
<span class="doccomment">/// Definition of 64 bit registers.
</span>Reg64, <span class="bool-val">true</span>, { rax, rcx, rdx, rbx, rsp, rbp, rsi, rdi, r8, r9, r10, r11, r12, r13, r14, r15 });
<span class="macro">impl_reg!</span>(
<span class="doccomment">/// Definition of 32 bit registers.
</span>Reg32, <span class="bool-val">false</span>, { eax, ecx, edx, ebx, esp, ebp, esi, edi, r8d, r9d, r10d, r11d, r12d, r13d, r14d, r15d });
<span class="macro">impl_reg!</span>(
<span class="doccomment">/// Definition of 16 bit registers.
</span>Reg16, <span class="bool-val">false</span>, { ax, cx, dx, bx, sp, bp, si, di, r8w, r9w, r10w, r11w, r12w, r13w, r14w, r15w });
<span class="macro">enum_reg!</span>(
<span class="doccomment">/// Definition of 8 bit registers.
</span>Reg8, { al, cl, dl, bl, spl, bpl, sil, dil, r8l, r9l, r10l, r11l, r12l, r13l, r14l, r15l,
ah, ch, dh, bh });
<span class="kw">impl </span>Reg <span class="kw">for </span>Reg8 {
<span class="doccomment">/// Get the raw x64 register code.
</span><span class="kw">fn </span>idx(<span class="kw-2">&</span><span class="self">self</span>) -> u8 {
<span class="kw">match </span><span class="self">self </span>{
Reg8::ah => <span class="number">4</span>,
Reg8::ch => <span class="number">5</span>,
Reg8::dh => <span class="number">6</span>,
Reg8::bh => <span class="number">7</span>,
<span class="kw">_ </span>=> <span class="kw-2">*</span><span class="self">self </span><span class="kw">as </span>u8,
}
}
<span class="doccomment">/// Check if the registers needs the `REX.W` bit.
</span><span class="kw">fn </span>rexw(<span class="kw-2">&</span><span class="self">self</span>) -> bool {
<span class="bool-val">false
</span>}
<span class="doccomment">/// Check whether the gp register needs a `REX` prefix
/// Check if the register requires a `REX` byte.
///
/// For 1 byte addressing, register indexes `[4:7]` require a `REX` prefix, or else they will
/// be decoded as `{AH, CH, DH, BH}` accordingly.
///
/// See [Registers](https://wiki.osdev.org/X86-64_Instruction_Encoding#Registers) for
/// further details or conduct `Table 3-1. Register Codes` in the *Intel Software Developers
/// Manual - Volume 2*.
</span><span class="kw">fn </span>need_rex(<span class="kw-2">&</span><span class="self">self</span>) -> bool {
<span class="self">self</span>.idx() > <span class="number">7 </span>|| <span class="macro">matches!</span>(<span class="self">self</span>, Reg8::spl | Reg8::bpl | Reg8::sil | Reg8::dil)
}
}
<span class="attr">#[cfg(test)]
</span><span class="kw">mod </span>tests {
<span class="kw">use super</span>::<span class="kw-2">*</span>;
<span class="attr">#[test]
</span><span class="kw">fn </span>test_reg8() {
<span class="kw">use </span>Reg8::<span class="kw-2">*</span>;
<span class="kw">for </span>r <span class="kw">in </span>Reg8::iter() {
<span class="comment">// Check register index.
</span><span class="kw">let </span>idx = <span class="kw">match </span>r {
al => <span class="number">0</span>,
cl => <span class="number">1</span>,
dl => <span class="number">2</span>,
bl => <span class="number">3</span>,
spl => <span class="number">4</span>,
bpl => <span class="number">5</span>,
sil => <span class="number">6</span>,
dil => <span class="number">7</span>,
r8l => <span class="number">8</span>,
r9l => <span class="number">9</span>,
r10l => <span class="number">10</span>,
r11l => <span class="number">11</span>,
r12l => <span class="number">12</span>,
r13l => <span class="number">13</span>,
r14l => <span class="number">14</span>,
r15l => <span class="number">15</span>,
ah => <span class="number">4</span>,
ch => <span class="number">5</span>,
dh => <span class="number">6</span>,
bh => <span class="number">7</span>,
};
<span class="macro">assert_eq!</span>(r.idx(), idx);
<span class="comment">// Check REX.W bit.
</span><span class="macro">assert!</span>(!r.rexw());
<span class="comment">// Check need REX byte.
</span><span class="kw">let </span>rex = <span class="macro">matches!</span>(
r,
r8l | r9l | r10l | r11l | r12l | r13l | r14l | r15l | spl | bpl | sil | dil
);
<span class="macro">assert_eq!</span>(r.need_rex(), rex);
<span class="comment">// Check need SIB byte.
</span><span class="kw">let </span>sib = <span class="macro">matches!</span>(r, spl | r12l | ah);
<span class="macro">assert_eq!</span>(r.need_sib(), sib);
<span class="comment">// Check if is PC relative addressing.
</span><span class="kw">let </span>rel = <span class="macro">matches!</span>(r, bpl | r13l | ch);
<span class="macro">assert_eq!</span>(r.is_pc_rel(), rel);
}
}
<span class="attr">#[test]
</span><span class="kw">fn </span>test_reg16() {
<span class="kw">use </span>Reg16::<span class="kw-2">*</span>;
<span class="kw">for </span>r <span class="kw">in </span>Reg16::iter() {
<span class="comment">// Check register index.
</span><span class="kw">let </span>idx = <span class="kw">match </span>r {
ax => <span class="number">0</span>,
cx => <span class="number">1</span>,
dx => <span class="number">2</span>,
bx => <span class="number">3</span>,
sp => <span class="number">4</span>,
bp => <span class="number">5</span>,
si => <span class="number">6</span>,
di => <span class="number">7</span>,
r8w => <span class="number">8</span>,
r9w => <span class="number">9</span>,
r10w => <span class="number">10</span>,
r11w => <span class="number">11</span>,
r12w => <span class="number">12</span>,
r13w => <span class="number">13</span>,
r14w => <span class="number">14</span>,
r15w => <span class="number">15</span>,
};
<span class="macro">assert_eq!</span>(r.idx(), idx);
<span class="comment">// Check REX.W bit.
</span><span class="macro">assert!</span>(!r.rexw());
<span class="comment">// Check need REX byte.
</span><span class="kw">let </span>rex = <span class="macro">matches!</span>(r, r8w | r9w | r10w | r11w | r12w | r13w | r14w | r15w);
<span class="macro">assert_eq!</span>(r.need_rex(), rex);
<span class="comment">// Check need SIB byte.
</span><span class="kw">let </span>sib = <span class="macro">matches!</span>(r, sp | r12w);
<span class="macro">assert_eq!</span>(r.need_sib(), sib);
<span class="comment">// Check if is PC relative addressing.
</span><span class="kw">let </span>rel = <span class="macro">matches!</span>(r, bp | r13w);
<span class="macro">assert_eq!</span>(r.is_pc_rel(), rel);
}
}
<span class="attr">#[test]
</span><span class="kw">fn </span>test_reg32() {
<span class="kw">use </span>Reg32::<span class="kw-2">*</span>;
<span class="kw">for </span>r <span class="kw">in </span>Reg32::iter() {
<span class="comment">// Check register index.
</span><span class="kw">let </span>idx = <span class="kw">match </span>r {
eax => <span class="number">0</span>,
ecx => <span class="number">1</span>,
edx => <span class="number">2</span>,
ebx => <span class="number">3</span>,
esp => <span class="number">4</span>,
ebp => <span class="number">5</span>,
esi => <span class="number">6</span>,
edi => <span class="number">7</span>,
r8d => <span class="number">8</span>,
r9d => <span class="number">9</span>,
r10d => <span class="number">10</span>,
r11d => <span class="number">11</span>,
r12d => <span class="number">12</span>,
r13d => <span class="number">13</span>,
r14d => <span class="number">14</span>,
r15d => <span class="number">15</span>,
};
<span class="macro">assert_eq!</span>(r.idx(), idx);
<span class="comment">// Check REX.W bit.
</span><span class="macro">assert!</span>(!r.rexw());
<span class="comment">// Check need REX byte.
</span><span class="kw">let </span>rex = <span class="macro">matches!</span>(r, r8d | r9d | r10d | r11d | r12d | r13d | r14d | r15d);
<span class="macro">assert_eq!</span>(r.need_rex(), rex);
<span class="comment">// Check need SIB byte.
</span><span class="kw">let </span>sib = <span class="macro">matches!</span>(r, esp | r12d);
<span class="macro">assert_eq!</span>(r.need_sib(), sib);
<span class="comment">// Check if is PC relative addressing.
</span><span class="kw">let </span>rel = <span class="macro">matches!</span>(r, ebp | r13d);
<span class="macro">assert_eq!</span>(r.is_pc_rel(), rel);
}
}
<span class="attr">#[test]
</span><span class="kw">fn </span>test_reg64() {
<span class="kw">use </span>Reg64::<span class="kw-2">*</span>;
<span class="kw">for </span>r <span class="kw">in </span>Reg64::iter() {
<span class="comment">// Check register index.
</span><span class="kw">let </span>idx = <span class="kw">match </span>r {
rax => <span class="number">0</span>,
rcx => <span class="number">1</span>,
rdx => <span class="number">2</span>,
rbx => <span class="number">3</span>,
rsp => <span class="number">4</span>,
rbp => <span class="number">5</span>,
rsi => <span class="number">6</span>,
rdi => <span class="number">7</span>,
r8 => <span class="number">8</span>,
r9 => <span class="number">9</span>,
r10 => <span class="number">10</span>,
r11 => <span class="number">11</span>,
r12 => <span class="number">12</span>,
r13 => <span class="number">13</span>,
r14 => <span class="number">14</span>,
r15 => <span class="number">15</span>,
};
<span class="macro">assert_eq!</span>(r.idx(), idx);
<span class="comment">// Check REX.W bit.
</span><span class="macro">assert!</span>(r.rexw());
<span class="comment">// Check need REX byte.
</span><span class="macro">assert!</span>(r.need_rex());
<span class="comment">// Check need SIB byte.
</span><span class="kw">let </span>sib = <span class="macro">matches!</span>(r, rsp | r12);
<span class="macro">assert_eq!</span>(r.need_sib(), sib);
<span class="comment">// Check if is PC relative addressing.
</span><span class="kw">let </span>rel = <span class="macro">matches!</span>(r, rbp | r13);
<span class="macro">assert_eq!</span>(r.is_pc_rel(), rel);
}
}
}
</code></pre></div></section></main></body></html>
