Add library usage documentation

Author: mborgerson

docs/guide.rst

@@ -0,0 +1,110 @@
+Guide
+=====
+
+Installation
+------------
+This package can be installed on Linux, macOS, and Windows platforms for recent (3.8+) versions of both CPython and
+PyPy. Wheels are provided for several configurations. The latest release can be installed from PyPI using ``pip``:
+
+.. code:: bash
+
+   pip install pypcode
+
+The very latest development version can be installed from GitHub via:
+
+.. code:: bash
+
+   pip install --user https://github.com/angr/pypcode/archive/refs/heads/master.zip
+
+Usage Example
+-------------
+.. code:: python
+
+   from pypcode import Arch, Context, PcodePrettyPrinter
+
+   # Enumerate available languages, select target language
+   langs = {lang.id: lang for arch in Arch.enumerate() for lang in arch.languages}
+   lang = langs["x86:LE:64:default"]
+
+   # Load machine code
+   base_address = 0
+   machine_code = b"\x48\x35\x78\x56\x34\x12\xc3"
+
+   # Create a translation context, lift a block
+   ctx = Context(lang)
+   result = ctx.translate(machine_code, base_address, bb_terminating=True)
+   if result.error:
+       print(f"Error: {result.error}")
+       exit(1)
+
+   # Print instruction disassembly, P-Code
+   for insn in result.instructions:
+       print(f"-- {insn.address.offset:#x}: {insn.asm_mnem} {insn.asm_body}")
+       for op in insn.ops:
+           print(f"{op.seq.uniq}) {PcodePrettyPrinter.fmt_op(op)}")
+
+.. highlight:: none
+::
+
+   -- 0x0: XOR RAX,0x12345678
+   0) CF = 0x0
+   1) OF = 0x0
+   2) RAX = RAX ^ 0x12345678
+   3) SF = RAX s< 0x0
+   4) ZF = RAX == 0x0
+   5) unique[0x13180:8] = RAX & 0xff
+   6) unique[0x13200:1] = popcount(unique[0x13180:8])
+   7) unique[0x13280:1] = unique[0x13200:1] & 0x1
+   8) PF = unique[0x13280:1] == 0x0
+   -- 0x6: RET
+   0) RIP = *[ram]RSP
+   1) RSP = RSP + 0x8
+   2) return RIP
+
+Command Line Usage Example
+--------------------------
+The ``pypcode`` module can be invoked from command line to disassemble and translate supported machine code to P-code
+from command line. Run ``python -m pypcode --help`` for usage information.
+
+::
+
+   $ python -m pypcode -b x86:LE:64:default test-x64.bin
+   --------------------------------------------------------------------------------
+   00000000/2: XOR EAX,EAX
+   --------------------------------------------------------------------------------
+     0: CF = 0x0
+     1: OF = 0x0
+     2: EAX = EAX ^ EAX
+     3: RAX = zext(EAX)
+     4: SF = EAX s< 0x0
+     5: ZF = EAX == 0x0
+     6: unique[0x2580:4] = EAX & 0xff
+     7: unique[0x2590:1] = popcount(unique[0x2580:4])
+     8: unique[0x25a0:1] = unique[0x2590:1] & 0x1
+     9: PF = unique[0x25a0:1] == 0x0
+
+   --------------------------------------------------------------------------------
+   00000002/2: CMP ESI,EAX
+   --------------------------------------------------------------------------------
+     0: CF = ESI < EAX
+     1: OF = sborrow(ESI, EAX)
+     2: unique[0x5180:4] = ESI - EAX
+     3: SF = unique[0x5180:4] s< 0x0
+     4: ZF = unique[0x5180:4] == 0x0
+     5: unique[0x2580:4] = unique[0x5180:4] & 0xff
+     6: unique[0x2590:1] = popcount(unique[0x2580:4])
+     7: unique[0x25a0:1] = unique[0x2590:1] & 0x1
+     8: PF = unique[0x25a0:1] == 0x0
+
+   --------------------------------------------------------------------------------
+   00000004/2: JBE 0x17
+   --------------------------------------------------------------------------------
+     0: unique[0x18f0:1] = CF || ZF
+     1: if (unique[0x18f0:1]) goto ram[0x17:8]
+
+SLEIGH & P-Code References
+--------------------------
+Extensive documentation covering SLEIGH and P-Code is available online:
+
+* `SLEIGH, P-Code Introduction <https://htmlpreview.github.io/?https://github.com/NationalSecurityAgency/ghidra/blob/Ghidra_10.2.2_build/GhidraDocs/languages/html/sleigh.html>`_
+* `P-Code Reference Manual <https://htmlpreview.github.io/?https://github.com/NationalSecurityAgency/ghidra/blob/Ghidra_10.2.2_build/GhidraDocs/languages/html/pcoderef.html>`_

docs/index.rst

@@ -12,8 +12,8 @@ Table of Contents
 .. toctree::
    :maxdepth: 2
 
-   Quick Start <quickstart>
-   API <api>
+   Guide <guide>
+   API Reference <api>
 
 Indices and Tables
 ------------------