Changes:
- $Id: descriptor.h 2075 2005-03-25 12:33:37Z edwin $
+ $Id: descriptor.h 2796 2005-06-23 09:42:34Z twisti $
*/
+
#ifndef _DESCRIPTOR_H
#define _DESCRIPTOR_H
+/* forward typedefs ***********************************************************/
+
+typedef struct descriptor_pool descriptor_pool;
+typedef struct paramdesc paramdesc;
+
+#include "vm/class.h"
#include "vm/global.h"
+#include "vm/method.h"
+#include "vm/references.h"
#include "vm/tables.h"
+
/* data structures ************************************************************/
/*----------------------------------------------------------------------------*/
/* done. */
/*----------------------------------------------------------------------------*/
-typedef struct descriptor_pool descriptor_pool;
-
struct descriptor_pool {
classinfo *referer;
u4 fieldcount;
u1 *descriptor_kind_next; /* useful for debugging */
};
+
+/* data structures for parsed field/method descriptors ************************/
+
+struct typedesc {
+ constant_classref *classref; /* class reference for TYPE_ADR types */
+ u1 type; /* TYPE_??? constant [1] */
+ u1 decltype; /* (PRIMITIVE)TYPE_??? constant [2] */
+ u1 arraydim; /* array dimension (0 if no array) */
+};
+
+/* [1]...the type field contains the basic type used within the VM. So ints, */
+/* shorts, chars, bytes, booleans all have TYPE_INT. */
+/* [2]...the decltype field contains the declared type. */
+/* So short is PRIMITIVETYPE_SHORT, char is PRIMITIVETYPE_CHAR. */
+/* For non-primitive types decltype is TYPE_ADR. */
+
+struct paramdesc {
+ bool inmemory; /* argument in register or on stack */
+ s4 regoff; /* register index or stack offset */
+};
+
+struct methoddesc {
+ s2 paramcount; /* number of parameters */
+ s2 paramslots; /* like above but LONG,DOUBLE count twice */
+ s4 argintreguse; /* number of used integer argument registers */
+ s4 argfltreguse; /* number of used float argument registers */
+ s4 memuse; /* number of stack slots used */
+ paramdesc *params; /* allocated parameter descriptions [3] */
+ typedesc returntype; /* parsed descriptor of the return type */
+ typedesc paramtypes[1]; /* parameter types, variable length! */
+};
+
+/* [3]...If params is NULL, the parameter descriptions have not yet been */
+/* allocated. In this case ___the possible 'this' pointer of the method */
+/* is NOT counted in paramcount/paramslots and it is NOT included in */
+/* the paramtypes array___. */
+/* If params != NULL, the parameter descriptions have been */
+/* allocated, and the 'this' pointer of the method, if any, IS included.*/
+/* In case the method has no parameters at all, the special value */
+/* METHODDESC_NO_PARAMS is used (see below). */
+
+/* METHODDESC_NO_PARAMS is a special value for the methoddesc.params field */
+/* indicating that the method is a static method without any parameters. */
+/* This special value must be != NULL and it may only be set if */
+/* md->paramcount == 0. */
+
+#define METHODDESC_NOPARAMS ((paramdesc*)1)
+
/* function prototypes ********************************************************/
/* descriptor_debug_print_typedesc *********************************************
void descriptor_debug_print_typedesc(FILE *file,typedesc *d);
+
/* descriptor_debug_print_methoddesc *******************************************
Print the given methoddesc to the given stream
void descriptor_debug_print_methoddesc(FILE *file,methoddesc *d);
+
+/* descriptor_debug_print_paramdesc ********************************************
+
+ Print the given paramdesc to the given stream
+
+ IN:
+ file.............stream to print to
+ d................the parameter descriptor
+
+*******************************************************************************/
+
+void descriptor_debug_print_paramdesc(FILE *file,paramdesc *d);
+
/* descriptor_pool_new *********************************************************
Allocate a new descriptor_pool
descriptor_pool * descriptor_pool_new(classinfo *referer);
+
/* descriptor_pool_add_class ***************************************************
Add the given class reference to the pool
bool descriptor_pool_add_class(descriptor_pool *pool,utf *name);
+
/* descriptor_pool_add *********************************************************
Check the given descriptor and add it to the pool
pool.............the descriptor_pool
desc.............the descriptor to add. Maybe a field or method desc.
+ OUT:
+ *paramslots......if non-NULL, set to the number of parameters.
+ LONG and DOUBLE are counted twice
+
RETURN VALUE:
true.............descriptor has been added
false............an exception has been thrown
*******************************************************************************/
-bool descriptor_pool_add(descriptor_pool *pool,utf *desc);
+bool descriptor_pool_add(descriptor_pool *pool,utf *desc,int *paramslots);
+
/* descriptor_pool_create_classrefs ********************************************
constant_classref * descriptor_pool_create_classrefs(descriptor_pool *pool,
s4 *count);
+
/* descriptor_pool_lookup_classref *********************************************
Return the constant_classref for the given class name
constant_classref * descriptor_pool_lookup_classref(descriptor_pool *pool,utf *classname);
+
/* descriptor_pool_alloc_parsed_descriptors ************************************
Allocate space for the parsed descriptors
void descriptor_pool_alloc_parsed_descriptors(descriptor_pool *pool);
+
/* descriptor_pool_parse_field_descriptor **************************************
Parse the given field descriptor
*******************************************************************************/
-typedesc * descriptor_pool_parse_field_descriptor(descriptor_pool *pool,utf *desc);
+typedesc *descriptor_pool_parse_field_descriptor(descriptor_pool *pool, utf *desc);
+
/* descriptor_pool_parse_method_descriptor *************************************
IN:
pool.............the descriptor_pool
- desc.............the method descriptor
+ desc.............the method descriptor
+ mflags...........the method flags
+ thisclass........classref to the class containing the method.
+ This is ignored if mflags contains ACC_STATIC.
+ The classref is stored for inserting the 'this' argument.
RETURN VALUE:
a pointer to the parsed method descriptor, or
*******************************************************************************/
-methoddesc * descriptor_pool_parse_method_descriptor(descriptor_pool *pool,utf *desc);
+methoddesc *descriptor_pool_parse_method_descriptor(descriptor_pool *pool, utf *desc, s4 mflags,
+ constant_classref *thisclass);
+
+/* descriptor_params_from_paramtypes *******************************************
+
+ Create the paramdescs for a method descriptor. This function is called
+ when we know whether the method is static or not. This function may only
+ be called once for each methoddesc, and only if md->params == NULL.
+
+ IN:
+ md...............the parsed method descriptor
+ md->params MUST be NULL.
+ mflags...........the ACC_* access flags of the method. Only the
+ ACC_STATIC bit is checked.
+ The value ACC_UNDEF is NOT allowed.
+
+ RETURN VALUE:
+ true.............the paramdescs were created successfully
+ false............an exception has been thrown
+
+ POSTCONDITION:
+ md->parms != NULL
+
+*******************************************************************************/
+
+bool descriptor_params_from_paramtypes(methoddesc *md, s4 mflags);
/* descriptor_pool_get_parsed_descriptors **************************************
*******************************************************************************/
-void * descriptor_pool_get_parsed_descriptors(descriptor_pool *pool,
- s4 *size);
+void *descriptor_pool_get_parsed_descriptors(descriptor_pool *pool, s4 *size);
+
/* descriptor_pool_get_sizes ***************************************************
*******************************************************************************/
-void descriptor_pool_get_sizes(descriptor_pool *pool,
- u4 *classrefsize,u4 *descsize);
+void descriptor_pool_get_sizes(descriptor_pool *pool, u4 *classrefsize,
+ u4 *descsize);
+
/* descriptor_debug_print_typedesc *********************************************
*******************************************************************************/
-void descriptor_debug_print_typedesc(FILE *file,typedesc *d);
+void descriptor_debug_print_typedesc(FILE *file, typedesc *d);
+
/* descriptor_debug_print_methoddesc *******************************************
*******************************************************************************/
-void descriptor_debug_print_methoddesc(FILE *file,methoddesc *d);
+void descriptor_debug_print_methoddesc(FILE *file, methoddesc *d);
+
/* descriptor_pool_debug_dump **************************************************
*******************************************************************************/
-void descriptor_pool_debug_dump(descriptor_pool *pool,FILE *file);
+void descriptor_pool_debug_dump(descriptor_pool *pool, FILE *file);
+
+
+/* machine dependent descriptor function */
+void md_param_alloc(methoddesc *md);
#endif /* _DESCRIPTOR_H */
+
/*
* These are local overrides for various environment variables in Emacs.
* Please do not remove this and leave it at the end of the file, where
* End:
* vim:noexpandtab:sw=4:ts=4:
*/
-
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