Each port that allows the usage of dynamic libraries should call InitSystemDynLibs during initialization of the System unit.
The DynLibs unit has been adjusted to be a forwarder for the functions that now reside in the System unit (for backwards compatiblity just in case). Additionally the unit will register the DynLibsManager if it doesn't reside in the System unit anyway.
Currently only the Windows targets (Win32, Win64 and WinCE) implement the DynLibsManager inside the System unit. For other systems using the LoadLibrary, etc. functions will lead to a run error/exception.
If a port wants to implement its own DynLibsManager then it needs to define DISABLE_NO_DYNLIBS_MANAGER. TLibHandle, NilHandle and optionally TOrdinalEntry (it's set to SizeUInt otherwise) should be defined in sysdlh.inc which needs to be enabled using the define FPC_SYSTEM_HAS_SYSDLH (because there are targets which have FEATURE_DYNLIBS enabled, but don't support them... e.g. powerpc-wii -.-).
The DynLibsManager contains methods for loading a library based on a RawByteString and based on a UnicodeString. BOTH should be implemented, but internally one can forward to the other.
The loading by ordinal *can* be be implemented. If it is set to Nil then the implementation of GetProcAddress(lib,ordinal) will return Nil.
+ new functions SetDynLibsManager and GetDynLibsManager to set and retrieve the current DynLibsManager
* provide interface of DynLibs unit in unit System
git-svn-id: trunk@29613 -
large memory models by changing TSearchRec.FindHandle to a pointer (because
THandle is 16-bit on this platform and is thus not able to hold a far pointer
without truncating it)
git-svn-id: trunk@28451 -
platform SysUtils.TSearchRec.FileHandle is a Pointer, instead of THandle.
I didn't introduce a TFindHandle type, because I didn't want to add yet
another publicly visible type in the SysUtils interface.
git-svn-id: trunk@28449 -
using memory barriers, rather than half-heartedly using atomic
operations. Fixes random failures in trwsync on POWER7 processors
(and probably other weakly ordered architectures)
git-svn-id: trunk@27723 -
* 'mxcsr' variable made public and renamed to DefaultMXCSR.
* GetSSECSR and SetSSECSR renamed to GetMXCSR and SetMXCSR, respectively. Previous names continue to exist as deprecated aliases.
git-svn-id: trunk@27656 -
- rm ifdefs for i8086 far code memory model when doing stack traces. The
compiler will now choose the correct overload of HexStr according to the
CodePointer type.
git-svn-id: trunk@27163 -
