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Diffstat (limited to 'contrib/perl5/ext/DynaLoader/dl_vmesa.xs')
| -rw-r--r-- | contrib/perl5/ext/DynaLoader/dl_vmesa.xs | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/contrib/perl5/ext/DynaLoader/dl_vmesa.xs b/contrib/perl5/ext/DynaLoader/dl_vmesa.xs deleted file mode 100644 index 8595e44..0000000 --- a/contrib/perl5/ext/DynaLoader/dl_vmesa.xs +++ /dev/null @@ -1,175 +0,0 @@ -/* dl_vmesa.xs - * - * Platform: VM/ESA, possibly others which use dllload etc. - * Author: Neale Ferguson (neale@mailbox.tabnsw.com.au) - * Created: 23rd Septemer, 1998 - * - * - */ - -/* Porting notes: - - - Definition of VM/ESA dynamic Linking functions - ============================================== - In order to make this implementation easier to understand here is a - quick definition of the VM/ESA Dynamic Linking functions which are - used here. - - dlopen - ------ - void * - dlopen(const char *path) - - This function takes the name of a dynamic object file and returns - a descriptor which can be used by dlsym later. It returns NULL on - error. - - - dllsym - ------ - void * - dlsym(void *handle, char *symbol) - - Takes the handle returned from dlopen and the name of a symbol to - get the address of. If the symbol was found a pointer is - returned. It returns NULL on error. - - dlerror - ------- - char * dlerror() - - Returns a null-terminated string which describes the last error - that occurred with the other dll functions. After each call to - dlerror the error message will be reset to a null pointer. The - SaveError function is used to save the error as soo as it happens. - - - Return Types - ============ - In this implementation the two functions, dl_load_file & - dl_find_symbol, return void *. This is because the underlying SunOS - dynamic linker calls also return void *. This is not necessarily - the case for all architectures. For example, some implementation - will want to return a char * for dl_load_file. - - If void * is not appropriate for your architecture, you will have to - change the void * to whatever you require. If you are not certain of - how Perl handles C data types, I suggest you start by consulting - Dean Roerich's Perl 5 API document. Also, have a look in the typemap - file (in the ext directory) for a fairly comprehensive list of types - that are already supported. If you are completely stuck, I suggest you - post a message to perl5-porters, comp.lang.perl.misc or if you are really - desperate to me. - - Remember when you are making any changes that the return value from - dl_load_file is used as a parameter in the dl_find_symbol - function. Also the return value from find_symbol is used as a parameter - to install_xsub. - - - Dealing with Error Messages - ============================ - In order to make the handling of dynamic linking errors as generic as - possible you should store any error messages associated with your - implementation with the StoreError function. - - In the case of VM/ESA the function dlerror returns the error message - associated with the last dynamic link error. As the VM/ESA dynamic - linker functions return NULL on error every call to a VM/ESA dynamic - dynamic link routine is coded like this - - RETVAL = dlopen(filename) ; - if (RETVAL == NULL) - SaveError(aTHX_ "%s",dlerror()) ; - - Note that SaveError() takes a printf format string. Use a "%s" as - the first parameter if the error may contain and % characters. - -*/ - -#include "EXTERN.h" -#include "perl.h" -#include "XSUB.h" -#include <dll.h> - - -#include "dlutils.c" /* SaveError() etc */ - - -static void -dl_private_init(pTHX) -{ - (void)dl_generic_private_init(aTHX); -} - -MODULE = DynaLoader PACKAGE = DynaLoader - -BOOT: - (void)dl_private_init(aTHX); - - -void * -dl_load_file(filename, flags=0) - char * filename - int flags - CODE: - if (flags & 0x01) - Perl_warn(aTHX_ "Can't make loaded symbols global on this platform while loading %s",filename); - DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_load_file(%s,%x):\n", filename,flags)); - RETVAL = dlopen(filename) ; - DLDEBUG(2,PerlIO_printf(Perl_debug_log, " libref=%lx\n", (unsigned long) RETVAL)); - ST(0) = sv_newmortal() ; - if (RETVAL == NULL) - SaveError(aTHX_ "%s",dlerror()) ; - else - sv_setiv( ST(0), PTR2IV(RETVAL) ); - - -void * -dl_find_symbol(libhandle, symbolname) - void * libhandle - char * symbolname - CODE: - DLDEBUG(2, PerlIO_printf(Perl_debug_log, - "dl_find_symbol(handle=%lx, symbol=%s)\n", - (unsigned long) libhandle, symbolname)); - RETVAL = dlsym(libhandle, symbolname); - DLDEBUG(2, PerlIO_printf(Perl_debug_log, - " symbolref = %lx\n", (unsigned long) RETVAL)); - ST(0) = sv_newmortal() ; - if (RETVAL == NULL) - SaveError(aTHX_ "%s",dlerror()) ; - else - sv_setiv( ST(0), PTR2IV(RETVAL) ); - - -void -dl_undef_symbols() - PPCODE: - - - -# These functions should not need changing on any platform: - -void -dl_install_xsub(perl_name, symref, filename="$Package") - char * perl_name - void * symref - char * filename - CODE: - DLDEBUG(2,PerlIO_printf(Perl_debug_log, "dl_install_xsub(name=%s, symref=%lx)\n", - perl_name, (unsigned long) symref)); - ST(0) = sv_2mortal(newRV((SV*)newXS(perl_name, - (void(*)(pTHX_ CV *))symref, - filename))); - - -char * -dl_error() - CODE: - RETVAL = LastError ; - OUTPUT: - RETVAL - -# end. |
