[squeak-dev] FFI: get function address?

John M McIntosh johnmci at smalltalkconsulting.com
Fri Mar 26 03:43:15 UTC 2010

There usually is an operating system call that you feed a "symbol" to that gives you a memory address. 
This address could be: 

(a) the start address of executable code.
(b) the start address of read only, or read/write storage for a data element of some sort.

This is kinda of exposed in the VM api via 

	VM->ioLoadModuleOfLength = ioLoadModuleOfLength;
	VM->ioLoadSymbolOfLengthFromModule = ioLoadSymbolOfLengthFromModule;

On 2010-03-25, at 7:50 PM, Schwab,Wilhelm K wrote:

> Hello all,
> Does Squeak/Pharo FFI offer a way to get the address of a function in a library?  The target of interest is probably more of an exported global containing a pointer, but GetProcAddress() worked on Windows, and I am assuming a similar trick will be required on Linux.
> Bill

John M. McIntosh <johnmci at smalltalkconsulting.com>   Twitter:  squeaker68882
Corporate Smalltalk Consulting Ltd.  http://www.smalltalkconsulting.com

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