mirror of
https://github.com/mytechnotalent/Embedded-Hacking.git
synced 2026-07-06 20:47:55 +02:00
Kevin Thomas
90 lines
4.2 KiB
XML
90 lines
4.2 KiB
XML
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 800">
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<style>
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.bg{fill:#0a0a0f}.pnl{fill:#12121a;stroke:#1a1a2e}.hdr{fill:#12121a}
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.title{font:bold 42px 'Courier New',monospace;fill:#00ff41}
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.sub{font:bold 28px 'Courier New',monospace;fill:#00d4ff}
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.txt{font:24px 'Courier New',monospace;fill:#c0c0c0}
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.dim{font:20px 'Courier New',monospace;fill:#888}
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.grn{font:bold 24px 'Courier New',monospace;fill:#00ff41}
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.red{font:bold 24px 'Courier New',monospace;fill:#ff0040}
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.cyn{font:bold 24px 'Courier New',monospace;fill:#00d4ff}
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.amb{font:bold 24px 'Courier New',monospace;fill:#ffaa00}
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.badge{stroke:#00ff41;rx:14}
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</style>
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<rect class="bg" width="1200" height="800"/>
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<!-- Title -->
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<text x="600" y="52" text-anchor="middle" class="title">Assembly Analysis</text>
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<text x="600" y="88" text-anchor="middle" class="dim">Key instructions in main() loop</text>
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<!-- Assembly Listing -->
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<rect x="40" y="110" width="700" height="490" rx="8" class="pnl"/>
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<text x="390" y="148" text-anchor="middle" class="sub">Loop Body (0x10000264)</text>
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<rect x="60" y="168" width="660" height="410" rx="4" fill="#0a0a0f" stroke="#1a1a2e" stroke-width="1"/>
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<text x="80" y="196" class="cyn">movs r1, #0x2a</text>
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<text x="420" y="196" class="dim">; reg=42</text>
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<text x="80" y="226" class="txt">bl __wrap_printf</text>
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<text x="420" y="226" class="dim">; print reg</text>
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<text x="80" y="256" class="amb">ldrb r1, [r4]</text>
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<text x="420" y="256" class="dim">; load static</text>
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<text x="80" y="286" class="txt">bl __wrap_printf</text>
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<text x="420" y="286" class="dim">; print s</text>
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<text x="80" y="316" class="red">mov.w r1, #0xd0000000</text>
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<text x="420" y="316" class="dim">; SIO base</text>
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<text x="80" y="346" class="amb">ldrb r3, [r4]</text>
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<text x="420" y="346" class="dim">; reload s</text>
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<text x="80" y="376" class="grn">adds r3, #1</text>
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<text x="420" y="376" class="dim">; s++</text>
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<text x="80" y="406" class="grn">strb r3, [r4]</text>
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<text x="420" y="406" class="dim">; store s</text>
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<text x="80" y="436" class="cyn">ldr r3, [r1, #4]</text>
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<text x="420" y="436" class="dim">; read GPIO</text>
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<text x="80" y="466" class="cyn">ubfx r3, r3, #15, #1</text>
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<text x="420" y="466" class="dim">; bit 15</text>
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<text x="80" y="496" class="red">eor.w r3, r3, #1</text>
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<text x="420" y="496" class="dim">; invert</text>
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<text x="80" y="526" class="amb">mcrr 0, 4, r2, r3, cr0</text>
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<text x="420" y="526" class="dim">; GPIO out</text>
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<text x="80" y="556" class="cyn">b.n 0x10000264</text>
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<text x="420" y="556" class="dim">; loop</text>
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<!-- Key Registers -->
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<rect x="780" y="110" width="380" height="220" rx="8" class="pnl"/>
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<text x="970" y="148" text-anchor="middle" class="sub">Key Registers</text>
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<text x="800" y="188" class="cyn">r1:</text>
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<text x="860" y="188" class="txt">printf arg</text>
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<text x="800" y="223" class="amb">r3:</text>
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<text x="860" y="223" class="txt">temp / static</text>
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<text x="800" y="258" class="grn">r4:</text>
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<text x="860" y="258" class="txt">0x200005a8</text>
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<text x="800" y="283" class="dim">(static var addr)</text>
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<text x="800" y="308" class="red">r2:</text>
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<text x="860" y="308" class="txt">LED pin (16)</text>
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<!-- Key Instructions -->
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<rect x="780" y="350" width="380" height="250" rx="8" class="pnl"/>
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<text x="970" y="388" text-anchor="middle" class="sub">Key Patterns</text>
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<text x="800" y="428" class="grn">ldrb/adds/strb</text>
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<text x="800" y="453" class="dim">Load-increment-store</text>
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<text x="800" y="478" class="dim">(static var update)</text>
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<text x="800" y="518" class="cyn">ubfx #15, #1</text>
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<text x="800" y="543" class="dim">Extract GPIO bit 15</text>
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<text x="800" y="573" class="red">eor.w #1</text>
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<text x="800" y="598" class="dim">Inverts (? 0 : 1)</text>
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<!-- Infinite Loop -->
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<rect x="40" y="620" width="1120" height="160" rx="8" class="pnl"/>
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<text x="600" y="658" text-anchor="middle" class="sub">Infinite Loop</text>
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<rect x="60" y="680" width="400" height="70" rx="4" fill="#0a0a0f" stroke="#00d4ff" stroke-width="1"/>
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<text x="80" y="715" class="cyn">b.n 0x10000264</text>
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<text x="80" y="738" class="dim">; while(true)</text>
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<text x="500" y="715" class="txt">No pop/bx lr</text>
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<text x="500" y="745" class="dim">main() never returns</text>
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</svg> |
