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TomAwezome 6b3fd2fecb Rename abs_addres to abs_address. 
Update documentation/comments to rename addr, fun, var, stmt, blk, desc, reg, seg, ptr, dup, clus, val, and bttn, to address, function, variable, statement, block, description, register, segment, pointer, duplicate, cluster, value, and button, respectively.
2021-10-06 21:35:32 -04:00

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<a name="l1"></a><span class=cF0>#</span><span class=cF1>define</span><span class=cF0> </span><span class=cF3>MODULE_SIZE</span><span class=cF0> </span><span class=cFE>1</span><span class=cF0> * </span><span class=cF3>BLK_SIZE</span><span class=cF0>
<a name="l2"></a>#</span><span class=cF1>define</span><span class=cF0> </span><span class=cF3>BOOT_HIGH_LOC_HD</span><span class=cF0> (</span><span class=cF7>(</span><span class=cF3>BOOT_RAM_LIMIT</span><span class=cF0> - (</span><span class=cF3>BOOT_STACK_SIZE</span><span class=cF0> + </span><span class=cF3>MODULE_SIZE</span><span class=cF0>)</span><span class=cF7>)</span><span class=cF0> &gt;&gt; </span><span class=cFE>4</span><span class=cF0>)
<a name="l3"></a>
<a name="l4"></a></span><span class=cF5>DefinePrint</span><span class=cF0>(</span><span class=cF6>&quot;DD_BOOT_HIGH_LOC_HD&quot;</span><span class=cF0>, </span><span class=cF6>&quot;%08X&quot;</span><span class=cF0>, </span><span class=cF3>BOOT_HIGH_LOC_HD</span><span class=cF0> &lt;&lt; </span><span class=cFE>4</span><span class=cF0>);
<a name="l5"></a>
<a name="l6"></a></span><span class=cF1>asm</span><span class=cF0> {
<a name="l7"></a></span><span class=cF1>USE16</span><span class=cF0>
<a name="l8"></a></span><span class=cFD>BHD_CODE</span><span class=cF0>::
<a name="l9"></a>
<a name="l10"></a>#</span><span class=cF1>define</span><span class=cF0> </span><span class=cF3>BHD_START</span><span class=cF0> (</span><span class=cFD>BHD_CODE</span><span class=cF0> - </span><span class=cF1>offset</span><span class=cF7>(</span><span class=cF9>CFAT32Boot</span><span class=cF0>.code</span><span class=cF7>)</span><span class=cF0>)
<a name="l11"></a>
<a name="l12"></a> </span><span class=cF1>CLD</span><span class=cF0>
<a name="l13"></a>
<a name="l14"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cF3>BOOT_HIGH_LOC_HD</span><span class=cF0>
<a name="l15"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>ES</span><span class=cF0>, </span><span class=cFC>AX</span><span class=cF0>
<a name="l16"></a>
<a name="l17"></a> </span><span class=cF1>CLI</span><span class=cF0>
<a name="l18"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>SS</span><span class=cF0>, </span><span class=cFC>AX</span><span class=cF0>
<a name="l19"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>SP</span><span class=cF0>, </span><span class=cF3>BOOT_STACK_SIZE</span><span class=cF0> + </span><span class=cF3>MODULE_SIZE</span><span class=cF0>
<a name="l20"></a> </span><span class=cF1>STI</span><span class=cF0>
<a name="l21"></a>
<a name="l22"></a> </span><span class=cF1>CALL</span><span class=cF0> BHD_GET_RIP
<a name="l23"></a>BHD_GET_RIP:
<a name="l24"></a> </span><span class=cF1>POP</span><span class=cF0> </span><span class=cFC>BX</span><span class=cF0>
<a name="l25"></a> </span><span class=cF1>SUB</span><span class=cF0> </span><span class=cFC>BX</span><span class=cF0>, BHD_GET_RIP - </span><span class=cF3>BHD_START</span><span class=cF0>
<a name="l26"></a> </span><span class=cF1>SHR</span><span class=cF0> </span><span class=cFC>BX</span><span class=cF0>, </span><span class=cFE>4</span><span class=cF0>
<a name="l27"></a></span><span class=cF2>//This copies this bootloader's code to 0x00096C00</span><span class=cF0>
<a name="l28"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cFC>CS</span><span class=cF0>
<a name="l29"></a> </span><span class=cF1>ADD</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cFC>BX</span><span class=cF0>
<a name="l30"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>DS</span><span class=cF0>, </span><span class=cFC>AX</span><span class=cF0>
<a name="l31"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>CX</span><span class=cF0>, </span><span class=cF3>MODULE_SIZE</span><span class=cF0>
<a name="l32"></a> </span><span class=cF1>XOR</span><span class=cF0> </span><span class=cFC>SI</span><span class=cF0>, </span><span class=cFC>SI</span><span class=cF0>
<a name="l33"></a> </span><span class=cF1>XOR</span><span class=cF0> </span><span class=cFC>DI</span><span class=cF0>, </span><span class=cFC>DI</span><span class=cF0>
<a name="l34"></a> </span><span class=cF1>REP_MOVSB</span><span class=cF0>
<a name="l35"></a>
<a name="l36"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cF3>BOOT_HIGH_LOC_HD</span><span class=cF0>
<a name="l37"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>DS</span><span class=cF0>, </span><span class=cFC>AX</span><span class=cF0>
<a name="l38"></a>
<a name="l39"></a></span><span class=cF2>//The assembler doesn't support 16-bit very well.</span><span class=cF0>
<a name="l40"></a> </span><span class=cF1>DU8</span><span class=cF0> </span><span class=cFE>0xEA</span><span class=cF0>; </span><span class=cF2>//JMP BOOT_HIGH_LOC_HD:BHD_HISTART</span><span class=cF0>
<a name="l41"></a> </span><span class=cF1>DU16</span><span class=cF0> BHD_HISTART - </span><span class=cF3>BHD_START</span><span class=cF0>, </span><span class=cF3>BOOT_HIGH_LOC_HD</span><span class=cF0>;
<a name="l42"></a>
<a name="l43"></a>BHD_BIOS_DRIVE_NUM: </span><span class=cF1>DU8</span><span class=cF0> </span><span class=cFE>0</span><span class=cF0>;
<a name="l44"></a>
<a name="l45"></a></span><span class=cF2>//Gets patched by </span><a href="https://zeal-operating-system.github.io/ZealOS/System/Boot/BootHDIns.CC.html#l25"><span class=cF4>BootHDIns</span></a><span class=cF2>().</span><span class=cF0>
<a name="l46"></a></span><span class=cFD>BHD_BLK_COUNT</span><span class=cF0>:: </span><span class=cF1>DU16</span><span class=cF0> </span><span class=cFE>0</span><span class=cF0>;
<a name="l47"></a>
<a name="l48"></a>BHD_DAP: </span><span class=cF1>DU8</span><span class=cF0> </span><span class=cFE>16</span><span class=cF0>, </span><span class=cFE>0</span><span class=cF0>, </span><span class=cFE>1</span><span class=cF0>, </span><span class=cFE>0</span><span class=cF0>; </span><span class=cF2>//One block at a time</span><span class=cF0>
<a name="l49"></a>BHD_DAP_BUF: </span><span class=cF1>DU16</span><span class=cF0> </span><span class=cFE>0</span><span class=cF0>, </span><span class=cFE>0</span><span class=cF0>;
<a name="l50"></a></span><span class=cF2>//Gets patched by </span><a href="https://zeal-operating-system.github.io/ZealOS/System/Boot/BootHDIns.CC.html#l25"><span class=cF4>BootHDIns</span></a><span class=cF2>().</span><span class=cF0>
<a name="l51"></a></span><span class=cFD>BHD_DAP_BLK</span><span class=cF0>:: </span><span class=cF2>//64-bit</span><span class=cF0>
<a name="l52"></a>BHD_DAP_BLK_LO: </span><span class=cF1>DU32</span><span class=cF0> </span><span class=cFE>0</span><span class=cF0>;
<a name="l53"></a>BHD_DAP_BLK_HI: </span><span class=cF1>DU32</span><span class=cF0> </span><span class=cFE>0</span><span class=cF0>;
<a name="l54"></a>
<a name="l55"></a>BHD_HISTART:
<a name="l56"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cF1>U8</span><span class=cF0> [BHD_BIOS_DRIVE_NUM - </span><span class=cF3>BHD_START</span><span class=cF0>], </span><span class=cFC>DL</span><span class=cF0> </span><span class=cF2>//Passed in by BIOS</span><span class=cF0>
<a name="l57"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cF3>BOOT_RAM_BASE</span><span class=cF0> / </span><span class=cFE>16</span><span class=cF0>
<a name="l58"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>ES</span><span class=cF0>, </span><span class=cFC>AX</span><span class=cF0>
<a name="l59"></a> </span><span class=cF1>XOR</span><span class=cF0> </span><span class=cFC>ECX</span><span class=cF0>, </span><span class=cFC>ECX</span><span class=cF0>
<a name="l60"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>CX</span><span class=cF0>, </span><span class=cF9>U16</span><span class=cF0> [</span><span class=cFD>BHD_BLK_COUNT</span><span class=cF0> - </span><span class=cF3>BHD_START</span><span class=cF0>]
<a name="l61"></a>
<a name="l62"></a>@@05: </span><span class=cF1>PUSH</span><span class=cF0> </span><span class=cFC>CX</span><span class=cF0> </span><span class=cF2>//Block count</span><span class=cF0>
<a name="l63"></a>
<a name="l64"></a></span><span class=cF2>//READ BLOCK</span><span class=cF0>
<a name="l65"></a> </span><span class=cF1>PUSH</span><span class=cF0> </span><span class=cFC>ES</span><span class=cF0> </span><span class=cF2>//Buf seg</span><span class=cF0>
<a name="l66"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cFC>ES</span><span class=cF0>
<a name="l67"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cF9>U16</span><span class=cF0> [BHD_DAP_BUF + </span><span class=cFE>2</span><span class=cF0> - </span><span class=cF3>BHD_START</span><span class=cF0>], </span><span class=cFC>AX</span><span class=cF0> </span><span class=cF2>//ES:0000</span><span class=cF0>
<a name="l68"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>SI</span><span class=cF0>, BHD_DAP - </span><span class=cF3>BHD_START</span><span class=cF0> </span><span class=cF2>//DS:SI=DAP</span><span class=cF0>
<a name="l69"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>AH</span><span class=cF0>, </span><span class=cFE>0x42</span><span class=cF0>
<a name="l70"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>DL</span><span class=cF0>, </span><span class=cF1>U8</span><span class=cF0> [BHD_BIOS_DRIVE_NUM - </span><span class=cF3>BHD_START</span><span class=cF0>]
<a name="l71"></a> </span><span class=cF1>INT</span><span class=cF0> </span><span class=cFE>0x13</span><span class=cF0>
<a name="l72"></a>
<a name="l73"></a> </span><span class=cF1>POP</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0> </span><span class=cF2>//ES</span><span class=cF0>
<a name="l74"></a> </span><span class=cF1>ADD</span><span class=cF0> </span><span class=cFC>AX</span><span class=cF0>, </span><span class=cF3>BLK_SIZE</span><span class=cF0> / </span><span class=cFE>16</span><span class=cF0>
<a name="l75"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>ES</span><span class=cF0>, </span><span class=cFC>AX</span><span class=cF0>
<a name="l76"></a> </span><span class=cF1>INC</span><span class=cF0> </span><span class=cF9>U32</span><span class=cF0> [BHD_DAP_BLK_LO - </span><span class=cF3>BHD_START</span><span class=cF0>]
<a name="l77"></a> </span><span class=cF1>JNZ</span><span class=cF0> @@10
<a name="l78"></a> </span><span class=cF1>INC</span><span class=cF0> </span><span class=cF9>U32</span><span class=cF0> [BHD_DAP_BLK_HI - </span><span class=cF3>BHD_START</span><span class=cF0>]
<a name="l79"></a>
<a name="l80"></a>@@10: </span><span class=cF1>POP</span><span class=cF0> </span><span class=cFC>CX</span><span class=cF0>
<a name="l81"></a> </span><span class=cF1>LOOP</span><span class=cF0> @@05
<a name="l82"></a>
<a name="l83"></a> </span><span class=cF1>XOR</span><span class=cF0> </span><span class=cFC>EBX</span><span class=cF0>, </span><span class=cFC>EBX</span><span class=cF0>
<a name="l84"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>EAX</span><span class=cF0>, </span><span class=cF3>BOOT_SRC_HARDDRIVE</span><span class=cF0> </span><span class=cF2>//</span><span class=cF9><u>See sys_boot_src</span><span class=cF0>
<a name="l85"></a></u></span><span class=cF2>//The assembler doesn't support 16-bit very well.</span><span class=cF0>
<a name="l86"></a> </span><span class=cF1>DU8</span><span class=cF0> </span><span class=cFE>0xEA</span><span class=cF0>; </span><span class=cF2>//JMP BOOT_RAM_BASE:0000</span><span class=cF0>
<a name="l87"></a> </span><span class=cF1>DU16</span><span class=cF0> </span><span class=cFE>0</span><span class=cF0>, </span><span class=cF3>BOOT_RAM_BASE</span><span class=cF0> / </span><span class=cFE>16</span><span class=cF0>;
<a name="l88"></a></span><span class=cF2>//Continues here </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/KStart16.CC.html#l1"><span class=cF4>::/Kernel/KStart16.CC</span></a><span class=cF0>
<a name="l89"></a></span><span class=cFD>BHD_END</span><span class=cF0>::
<a name="l90"></a>#</span><span class=cF1>assert</span><span class=cF0> </span><span class=cFD>BHD_END</span><span class=cF0> - </span><span class=cF3>BHD_START</span><span class=cF0> &lt; </span><span class=cF3>MODULE_SIZE</span><span class=cF0> - </span><span class=cFE>2</span><span class=cF0>
<a name="l91"></a>}
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