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Full Discussion: Understanding Assembly Code
Top Forums Programming Understanding Assembly Code Post 302932005 by RudiC on Sunday 18th of January 2015 06:04:05 AM
Old 01-18-2015
My last assembler is quite some days ago, but I'd say
1) s2 is (the address of) a constant ("*********") defined in the last line of your listing
2) eax holds the call No. (function selector) for the linux kernel interrupt 0x80 see here. As the return value in ebx is not explicitly set, it seems to rely on the value returned by sys_write to be used as the exit code.
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al(1)							      General Commands Manual							     al(1)

NAME
al, al2 - Mono Assembly Linker SYNOPSIS
al [option] [source-files] DESCRIPTION
AL is the Mono assembly linkder. This linker is used to put together assemblies from a collection of modules (.netmodule files), assembly manifest files and resources. Do not confuse this with the monolinker, which is a tool to reduce the size of assemblies based on the code used. Use al for processing 1.0 assemblies, use al2 to process 2.0 assemblies. OPTIONS
@<filename> Read response file for more options. -algid:<id> Algorithm used to hash files. The <id> must be specified in hexadecimal. -base:<addr> | -baseaddress:<addr> Base address for the library. THIS FEATURE ISN'T IMPLEMENTED. -bugreport:<filename> Create a 'Bug Report' file. THIS FEATURE ISN'T IMPLEMENTED. -comp:<text> | -company:<text> This inserts the company name into the assembly metadata. This is equivalent to adding the [AssemblyCompany ("<text>")] attribute into C# source code. -config:<text> | -configuration:<text> This inserts the configuration string into the assembly metadata. This is equivalent to adding the [AssemblyConfiguration ("<text>")] attribute into C# source code. -copy:<text> | -copyright:<text> This inserts the copyright message into the assembly metadata. This is equivalent to adding the [AssemblyCopyright ("<text>")] attribute into C# source code. -c:<text> | -culture:<text> This inserts the supported culture into the assembly metadata. This is equivalent to adding the [AssemblyCulture ("<text>")] attribute into C# source code. -delay | -delay+ | -delaysign | -delaysign+ The generated assembly will be delay signed. This is equivalent to adding the [AssemblyDelaySignAttribute (true)] attribute into C# source code. -delay- | -delaysign- The generated assembly will be fully signed (i.e. not delay signed). This is the default option when signing (-keyfile or -key- name). -descr:<text> | -description:<text> This inserts a description of the assembly into the assembly metadata. This is equivalent to adding the [AssemblyDescription ("<text>")] attribute into C# source code. -e:<filename> | -evidence:<filename> This embed into the assembly the specified file as assembly security evidences. -fileversion:<version> Optional Win32 version. This overrides the normal assembly version. -flags:<flags> Assembly flags. The <flags> must be specified in hexadecimal. -fullpaths Display files using fully-qualified filenames. -keyf:<filename> | -keyfile:<filename> Strongname (sign) the output assembly using the key pair present in the specified strong name key file (snk). A full key pair is required unless the delay signing option is also specified (-delay+). This is equivalent to adding the [AssemblyKeyFile ("<text>")] attribute into C# source code. -keyn:<text> | -keyname:<text> Strongname (sign) the output assembly using the key pair present in the specified container. Delay signing isn't supported when using key containers. This is equivalent to adding the [AssemblyKeyName ("<text>")] attribute into C# source code. -main:<method> Specifies the method name of the assembly entry point. -nologo Suppress the startup banner and copyright message. -out:<filename> Output file name for the assembly manifest. -prod:<text> | product:<text> This inserts the product name into the assembly metadata. This is equivalent to adding the [AssemblyProduct ("<text>")] attribute into C# source code. -productv[ersion]:<text> This inserts the product version into the assembly metadata. This is equivalent to adding the [AssemblyInformationalVersion ("<text>")] attribute into C# source code. -t[arget]:<target> | -target=<target> Valid <target>s are: lib | library to create a library (.dll), exe to create a console executable (.exe), and win | winexe to create a Windows executable (.exe). -template:<filename> Specifies an assembly to get default options from. -title:<text> This inserts an assembly title into the assembly metadata. This is equivalent to adding the [AssemblyTitle ("<text>")] attribute into C# source code. -trade:<text> | -trademark:<text> This inserts a trademark message into the assembly metadata. This is equivalent to adding the [AssemblyTrademark ("<text>")] attribute into C# source code. -v:<version> | -version:<version> This inserts the assembly version into the assembly metadata. You can use * to auto-generate remaining numbers. This is equivalent to adding the [AssemblyVersion ("<text>")] attribute into C# source code. -win32icon:<filename> Use this icon for the output. -win32res:<filename> Specifies the Win32 resource file. -? | -help Display information about AL SEE ALSO
sn(1), monolinker(1) COPYRIGHT
Copyright (C) 2005 Novell, Inc (http://www.novell.com) MAILING LISTS
Visit http://lists.ximian.com/mailman/listinfo/mono-devel-list for details. WEB SITE
Visit: http://www.mono-project.com for details al(1)
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