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 103
 104 <div class="header">
 105   <div class="headertitle"><div class="title">riscv.h</div></div>
 106 </div><!--header-->
 107 <div class="contents">
 108 <a href="riscv_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">/*</span></div>
 109 <div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment"> * Copyright (c) 2022 Raspberry Pi (Trading) Ltd.</span></div>
 110 <div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment"> *</span></div>
 111 <div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment"> * SPDX-License-Identifier: BSD-3-Clause</span></div>
 112 <div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment"> */</span></div>
 113 <div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span> </div>
 114 <div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="preprocessor">#ifndef _HARDWARE_RISCV_</span></div>
 115 <div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="preprocessor">#define _HARDWARE_RISCV_</span></div>
 116 <div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span> </div>
 117 <div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span><span class="preprocessor">#include &quot;<a class="code" href="pico_8h.html">pico.h</a>&quot;</span></div>
 118 <div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="preprocessor">#include &quot;hardware/regs/rvcsr.h&quot;</span></div>
 119 <div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span> </div>
 120 <div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="preprocessor">#ifndef __ASSEMBLER__</span></div>
 121 <div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span> </div>
 122 <div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="preprocessor">#ifdef __cplusplus</span></div>
 123 <div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="keyword">extern</span> <span class="stringliteral">&quot;C&quot;</span> {</div>
 124 <div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="preprocessor">#endif</span></div>
 125 <div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span> </div>
 126 <div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span><span class="preprocessor">#define _riscv_read_csr(csrname) ({ \</span></div>
 127 <div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span><span class="preprocessor">    uint32_t __csr_tmp_u32; \</span></div>
 128 <div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span><span class="preprocessor">    asm volatile (&quot;csrr %0, &quot;</span> #csrname : &quot;=r&quot; (__csr_tmp_u32)); \</div>
 129 <div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span>    __csr_tmp_u32; \</div>
 130 <div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span>})</div>
 131 <div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span> </div>
 132 <div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span><span class="preprocessor">#define _riscv_write_csr(csrname, data) ({ \</span></div>
 133 <div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span><span class="preprocessor">    if (__builtin_constant_p(data) &amp;&amp; !((data) &amp; -32u)) { \</span></div>
 134 <div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span><span class="preprocessor">        asm volatile (&quot;csrwi &quot;</span> #csrname &quot;, %0&quot; : : &quot;i&quot; (data)); \</div>
 135 <div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span>    } else { \</div>
 136 <div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span>        asm volatile (&quot;csrw &quot; #csrname &quot;, %0&quot; : : &quot;r&quot; (data)); \</div>
 137 <div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span>    } \</div>
 138 <div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span>})</div>
 139 <div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span> </div>
 140 <div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span><span class="preprocessor">#define _riscv_set_csr(csrname, data) ({ \</span></div>
 141 <div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span><span class="preprocessor">    if (__builtin_constant_p(data) &amp;&amp; !((data) &amp; -32u)) { \</span></div>
 142 <div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span><span class="preprocessor">        asm volatile (&quot;csrsi &quot;</span> #csrname &quot;, %0&quot; : : &quot;i&quot; (data)); \</div>
 143 <div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span>    } else { \</div>
 144 <div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span>        asm volatile (&quot;csrs &quot; #csrname &quot;, %0&quot; : : &quot;r&quot; (data)); \</div>
 145 <div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span>    } \</div>
 146 <div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span>})</div>
 147 <div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span> </div>
 148 <div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span><span class="preprocessor">#define _riscv_clear_csr(csrname, data) ({ \</span></div>
 149 <div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span><span class="preprocessor">    if (__builtin_constant_p(data) &amp;&amp; !((data) &amp; -32u)) { \</span></div>
 150 <div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span><span class="preprocessor">        asm volatile (&quot;csrci &quot;</span> #csrname &quot;, %0&quot; : : &quot;i&quot; (data)); \</div>
 151 <div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span>    } else { \</div>
 152 <div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span>        asm volatile (&quot;csrc &quot; #csrname &quot;, %0&quot; : : &quot;r&quot; (data)); \</div>
 153 <div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span>    } \</div>
 154 <div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span>})</div>
 155 <div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span> </div>
 156 <div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span><span class="preprocessor">#define _riscv_read_write_csr(csrname, data) ({ \</span></div>
 157 <div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span><span class="preprocessor">    uint32_t __csr_tmp_u32; \</span></div>
 158 <div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span><span class="preprocessor">    if (__builtin_constant_p(data) &amp;&amp; !((data) &amp; -32u)) { \</span></div>
 159 <div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span><span class="preprocessor">        asm volatile (&quot;csrrwi %0, &quot;</span> #csrname &quot;, %1&quot;: &quot;=r&quot; (__csr_tmp_u32) : &quot;i&quot; (data)); \</div>
 160 <div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span>    } else { \</div>
 161 <div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span>        asm volatile (&quot;csrrw %0, &quot; #csrname &quot;, %1&quot;: &quot;=r&quot; (__csr_tmp_u32) : &quot;r&quot; (data)); \</div>
 162 <div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span>    } \</div>
 163 <div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span>    __csr_tmp_u32; \</div>
 164 <div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span>})</div>
 165 <div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span> </div>
 166 <div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span><span class="preprocessor">#define _riscv_read_set_csr(csrname, data) ({ \</span></div>
 167 <div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span><span class="preprocessor">    uint32_t __csr_tmp_u32; \</span></div>
 168 <div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span><span class="preprocessor">    if (__builtin_constant_p(data) &amp;&amp; !((data) &amp; -32u)) { \</span></div>
 169 <div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span><span class="preprocessor">        asm volatile (&quot;csrrsi %0, &quot;</span> #csrname &quot;, %1&quot;: &quot;=r&quot; (__csr_tmp_u32) : &quot;i&quot; (data)); \</div>
 170 <div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span>    } else { \</div>
 171 <div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span>        asm volatile (&quot;csrrs %0, &quot; #csrname &quot;, %1&quot;: &quot;=r&quot; (__csr_tmp_u32) : &quot;r&quot; (data)); \</div>
 172 <div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span>    } \</div>
 173 <div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span>    __csr_tmp_u32; \</div>
 174 <div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span>})</div>
 175 <div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span> </div>
 176 <div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span><span class="preprocessor">#define _riscv_read_clear_csr(csrname, data) ({ \</span></div>
 177 <div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span><span class="preprocessor">    uint32_t __csr_tmp_u32; \</span></div>
 178 <div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span><span class="preprocessor">    if (__builtin_constant_p(data) &amp;&amp; !((data) &amp; -32u)) { \</span></div>
 179 <div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span><span class="preprocessor">        asm volatile (&quot;csrrci %0, &quot;</span> #csrname &quot;, %1&quot;: &quot;=r&quot; (__csr_tmp_u32) : &quot;i&quot; (data)); \</div>
 180 <div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span>    } else { \</div>
 181 <div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span>        asm volatile (&quot;csrrc %0, &quot; #csrname &quot;, %1&quot;: &quot;=r&quot; (__csr_tmp_u32) : &quot;r&quot; (data)); \</div>
 182 <div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span>    } \</div>
 183 <div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span>    __csr_tmp_u32; \</div>
 184 <div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span>})</div>
 185 <div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span> </div>
 186 <div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span><span class="comment">// Argument macro expansion layer (CSR name may be a macro that expands to a</span></div>
 187 <div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span><span class="comment">// CSR number, or it may be a bare name that the assembler knows about.)</span></div>
 188 <div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span><span class="preprocessor">#define riscv_read_csr(csrname) _riscv_read_csr(csrname)</span></div>
 189 <div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span><span class="preprocessor">#define riscv_write_csr(csrname, data) _riscv_write_csr(csrname, data)</span></div>
 190 <div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span><span class="preprocessor">#define riscv_set_csr(csrname, data) _riscv_set_csr(csrname, data)</span></div>
 191 <div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span><span class="preprocessor">#define riscv_clear_csr(csrname, data) _riscv_clear_csr(csrname, data)</span></div>
 192 <div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span><span class="preprocessor">#define riscv_read_write_csr(csrname, data) _riscv_read_write_csr(csrname, data)</span></div>
 193 <div class="line"><a id="l00093" name="l00093"></a><span class="lineno">   93</span><span class="preprocessor">#define riscv_read_set_csr(csrname, data) _riscv_read_set_csr(csrname, data)</span></div>
 194 <div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span><span class="preprocessor">#define riscv_read_clear_csr(csrname, data) _riscv_read_clear_csr(csrname, data)</span></div>
 195 <div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span> </div>
 196 <div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span><span class="comment">// Helpers for encoding RISC-V immediates</span></div>
 197 <div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span> </div>
 198 <div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span><span class="comment">// U format, e.g. lui</span></div>
 199 <div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span><span class="keyword">static</span> <span class="keyword">inline</span> uint32_t riscv_encode_imm_u(uint32_t x) {</div>
 200 <div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span>    <span class="keywordflow">return</span> (x &gt;&gt; 12) &lt;&lt; 12;</div>
 201 <div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span>}</div>
 202 <div class="line"><a id="l00102" name="l00102"></a><span class="lineno">  102</span> </div>
 203 <div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span><span class="comment">// I format, e.g. addi</span></div>
 204 <div class="line"><a id="l00104" name="l00104"></a><span class="lineno">  104</span><span class="keyword">static</span> <span class="keyword">inline</span> uint32_t riscv_encode_imm_i(uint32_t x) {</div>
 205 <div class="line"><a id="l00105" name="l00105"></a><span class="lineno">  105</span>    <span class="keywordflow">return</span> (x &amp; 0xfff) &lt;&lt; 20;</div>
 206 <div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span>}</div>
 207 <div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span> </div>
 208 <div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span><span class="comment">// The U-format part of a U+I 32-bit immediate:</span></div>
 209 <div class="line"><a id="l00109" name="l00109"></a><span class="lineno">  109</span><span class="keyword">static</span> <span class="keyword">inline</span> uint32_t riscv_encode_imm_u_hi(uint32_t x) {</div>
 210 <div class="line"><a id="l00110" name="l00110"></a><span class="lineno">  110</span>    <span class="comment">// We will add a signed 12 bit constant to the &quot;lui&quot; value,</span></div>
 211 <div class="line"><a id="l00111" name="l00111"></a><span class="lineno">  111</span>    <span class="comment">// so we need to correct for the carry here.</span></div>
 212 <div class="line"><a id="l00112" name="l00112"></a><span class="lineno">  112</span>    x += (x &amp; 0x800) &lt;&lt; 1;</div>
 213 <div class="line"><a id="l00113" name="l00113"></a><span class="lineno">  113</span>    <span class="keywordflow">return</span> riscv_encode_imm_u(x);</div>
 214 <div class="line"><a id="l00114" name="l00114"></a><span class="lineno">  114</span>}</div>
 215 <div class="line"><a id="l00115" name="l00115"></a><span class="lineno">  115</span> </div>
 216 <div class="line"><a id="l00116" name="l00116"></a><span class="lineno">  116</span><span class="comment">// B format, e.g. bgeu</span></div>
 217 <div class="line"><a id="l00117" name="l00117"></a><span class="lineno">  117</span><span class="keyword">static</span> <span class="keyword">inline</span> uint32_t riscv_encode_imm_b(uint32_t x) {</div>
 218 <div class="line"><a id="l00118" name="l00118"></a><span class="lineno">  118</span>    <span class="keywordflow">return</span></div>
 219 <div class="line"><a id="l00119" name="l00119"></a><span class="lineno">  119</span>        (((x &gt;&gt; 12) &amp; 0x01) &lt;&lt; 31) |</div>
 220 <div class="line"><a id="l00120" name="l00120"></a><span class="lineno">  120</span>        (((x &gt;&gt;  5) &amp; 0x3f) &lt;&lt; 25) |</div>
 221 <div class="line"><a id="l00121" name="l00121"></a><span class="lineno">  121</span>        (((x &gt;&gt;  1) &amp; 0x0f) &lt;&lt;  8) |</div>
 222 <div class="line"><a id="l00122" name="l00122"></a><span class="lineno">  122</span>        (((x &gt;&gt; 11) &amp; 0x01) &lt;&lt;  7);</div>
 223 <div class="line"><a id="l00123" name="l00123"></a><span class="lineno">  123</span>}</div>
 224 <div class="line"><a id="l00124" name="l00124"></a><span class="lineno">  124</span> </div>
 225 <div class="line"><a id="l00125" name="l00125"></a><span class="lineno">  125</span><span class="comment">// S format, e.g. sw</span></div>
 226 <div class="line"><a id="l00126" name="l00126"></a><span class="lineno">  126</span><span class="keyword">static</span> <span class="keyword">inline</span> uint32_t riscv_encode_imm_s(uint32_t x) {</div>
 227 <div class="line"><a id="l00127" name="l00127"></a><span class="lineno">  127</span>    <span class="keywordflow">return</span></div>
 228 <div class="line"><a id="l00128" name="l00128"></a><span class="lineno">  128</span>        (((x &gt;&gt;  5) &amp; 0x7f) &lt;&lt; 25) |</div>
 229 <div class="line"><a id="l00129" name="l00129"></a><span class="lineno">  129</span>        (((x &gt;&gt;  0) &amp; 0x1f) &lt;&lt;  7);</div>
 230 <div class="line"><a id="l00130" name="l00130"></a><span class="lineno">  130</span>}</div>
 231 <div class="line"><a id="l00131" name="l00131"></a><span class="lineno">  131</span> </div>
 232 <div class="line"><a id="l00132" name="l00132"></a><span class="lineno">  132</span><span class="comment">// J format, e.g. jal</span></div>
 233 <div class="line"><a id="l00133" name="l00133"></a><span class="lineno">  133</span><span class="keyword">static</span> <span class="keyword">inline</span> uint32_t riscv_encode_imm_j(uint32_t x) {</div>
 234 <div class="line"><a id="l00134" name="l00134"></a><span class="lineno">  134</span>    <span class="keywordflow">return</span></div>
 235 <div class="line"><a id="l00135" name="l00135"></a><span class="lineno">  135</span>        (((x &gt;&gt; 20) &amp; 0x001) &lt;&lt; 31) |</div>
 236 <div class="line"><a id="l00136" name="l00136"></a><span class="lineno">  136</span>        (((x &gt;&gt;  1) &amp; 0x3ff) &lt;&lt; 21) |</div>
 237 <div class="line"><a id="l00137" name="l00137"></a><span class="lineno">  137</span>        (((x &gt;&gt; 11) &amp; 0x001) &lt;&lt; 20) |</div>
 238 <div class="line"><a id="l00138" name="l00138"></a><span class="lineno">  138</span>        (((x &gt;&gt; 12) &amp; 0x0ff) &lt;&lt; 12);</div>
 239 <div class="line"><a id="l00139" name="l00139"></a><span class="lineno">  139</span>}</div>
 240 <div class="line"><a id="l00140" name="l00140"></a><span class="lineno">  140</span> </div>
 241 <div class="line"><a id="l00141" name="l00141"></a><span class="lineno">  141</span><span class="comment">// CJ format, e.g. c.jal</span></div>
 242 <div class="line"><a id="l00142" name="l00142"></a><span class="lineno">  142</span><span class="keyword">static</span> <span class="keyword">inline</span> uint16_t riscv_encode_imm_cj(uint32_t x) {</div>
 243 <div class="line"><a id="l00143" name="l00143"></a><span class="lineno">  143</span>    <span class="keywordflow">return</span> (uint16_t)(</div>
 244 <div class="line"><a id="l00144" name="l00144"></a><span class="lineno">  144</span>        (((x &gt;&gt; 11) &amp; 0x1) &lt;&lt; 12) |</div>
 245 <div class="line"><a id="l00145" name="l00145"></a><span class="lineno">  145</span>        (((x &gt;&gt;  4) &amp; 0x1) &lt;&lt; 11) |</div>
 246 <div class="line"><a id="l00146" name="l00146"></a><span class="lineno">  146</span>        (((x &gt;&gt;  8) &amp; 0x3) &lt;&lt;  9) |</div>
 247 <div class="line"><a id="l00147" name="l00147"></a><span class="lineno">  147</span>        (((x &gt;&gt; 10) &amp; 0x1) &lt;&lt;  8) |</div>
 248 <div class="line"><a id="l00148" name="l00148"></a><span class="lineno">  148</span>        (((x &gt;&gt;  6) &amp; 0x1) &lt;&lt;  7) |</div>
 249 <div class="line"><a id="l00149" name="l00149"></a><span class="lineno">  149</span>        (((x &gt;&gt;  7) &amp; 0x1) &lt;&lt;  6) |</div>
 250 <div class="line"><a id="l00150" name="l00150"></a><span class="lineno">  150</span>        (((x &gt;&gt;  1) &amp; 0x7) &lt;&lt;  3) |</div>
 251 <div class="line"><a id="l00151" name="l00151"></a><span class="lineno">  151</span>        (((x &gt;&gt;  5) &amp; 0x1) &lt;&lt;  2)</div>
 252 <div class="line"><a id="l00152" name="l00152"></a><span class="lineno">  152</span>    );</div>
 253 <div class="line"><a id="l00153" name="l00153"></a><span class="lineno">  153</span>}</div>
 254 <div class="line"><a id="l00154" name="l00154"></a><span class="lineno">  154</span> </div>
 255 <div class="line"><a id="l00155" name="l00155"></a><span class="lineno">  155</span><span class="comment">// CB format, e.g. c.beqz</span></div>
 256 <div class="line"><a id="l00156" name="l00156"></a><span class="lineno">  156</span><span class="keyword">static</span> <span class="keyword">inline</span> uint16_t riscv_encode_imm_cb(uint32_t x) {</div>
 257 <div class="line"><a id="l00157" name="l00157"></a><span class="lineno">  157</span>    <span class="keywordflow">return</span> (uint16_t)(</div>
 258 <div class="line"><a id="l00158" name="l00158"></a><span class="lineno">  158</span>        (((x &gt;&gt; 8) &amp; 0x1) &lt;&lt; 12) |</div>
 259 <div class="line"><a id="l00159" name="l00159"></a><span class="lineno">  159</span>        (((x &gt;&gt; 3) &amp; 0x3) &lt;&lt; 10) |</div>
 260 <div class="line"><a id="l00160" name="l00160"></a><span class="lineno">  160</span>        (((x &gt;&gt; 6) &amp; 0x3) &lt;&lt;  5) |</div>
 261 <div class="line"><a id="l00161" name="l00161"></a><span class="lineno">  161</span>        (((x &gt;&gt; 1) &amp; 0x3) &lt;&lt;  3) |</div>
 262 <div class="line"><a id="l00162" name="l00162"></a><span class="lineno">  162</span>        (((x &gt;&gt; 5) &amp; 0x1) &lt;&lt;  2)</div>
 263 <div class="line"><a id="l00163" name="l00163"></a><span class="lineno">  163</span>    );</div>
 264 <div class="line"><a id="l00164" name="l00164"></a><span class="lineno">  164</span>}</div>
 265 <div class="line"><a id="l00165" name="l00165"></a><span class="lineno">  165</span> </div>
 266 <div class="line"><a id="l00166" name="l00166"></a><span class="lineno">  166</span><span class="comment">// CI format, e.g. c.addi</span></div>
 267 <div class="line"><a id="l00167" name="l00167"></a><span class="lineno">  167</span><span class="keyword">static</span> <span class="keyword">inline</span> uint16_t riscv_encode_imm_ci(uint32_t x) {</div>
 268 <div class="line"><a id="l00168" name="l00168"></a><span class="lineno">  168</span>    <span class="keywordflow">return</span> (uint16_t)(</div>
 269 <div class="line"><a id="l00169" name="l00169"></a><span class="lineno">  169</span>        (((x &gt;&gt; 5) &amp; 0x01) &lt;&lt; 12) |</div>
 270 <div class="line"><a id="l00170" name="l00170"></a><span class="lineno">  170</span>        (((x &gt;&gt; 0) &amp; 0x1f) &lt;&lt;  2)</div>
 271 <div class="line"><a id="l00171" name="l00171"></a><span class="lineno">  171</span>    );</div>
 272 <div class="line"><a id="l00172" name="l00172"></a><span class="lineno">  172</span>}</div>
 273 <div class="line"><a id="l00173" name="l00173"></a><span class="lineno">  173</span> </div>
 274 <div class="line"><a id="l00174" name="l00174"></a><span class="lineno">  174</span><span class="preprocessor">#ifdef __cplusplus</span></div>
 275 <div class="line"><a id="l00175" name="l00175"></a><span class="lineno">  175</span>}</div>
 276 <div class="line"><a id="l00176" name="l00176"></a><span class="lineno">  176</span><span class="preprocessor">#endif</span></div>
 277 <div class="line"><a id="l00177" name="l00177"></a><span class="lineno">  177</span> </div>
 278 <div class="line"><a id="l00178" name="l00178"></a><span class="lineno">  178</span><span class="preprocessor">#endif</span></div>
 279 <div class="line"><a id="l00179" name="l00179"></a><span class="lineno">  179</span><span class="preprocessor">#endif</span></div>
 280 <div class="ttc" id="apico_8h_html"><div class="ttname"><a href="pico_8h.html">pico.h</a></div></div>
 281 </div><!-- fragment --></div><!-- contents -->
 282 </div><!-- doc-content -->
 283
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