[rfc][31/37] Eliminate builtin_type_ macros: Inferior call argument types

[uweigand@de.ibm.com]

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Hello,

a number of places use builtin_type_ macros to build up argument lists
for inferior function calls.  However, they always use the routine
find_function_in_inferior first to find the function to be called.
This routine is able to determine the objfile that defines the function
to be called -- and the per-objfile architecture of that file should
be used to determine the default types for the inferior call.

Bye,
Ulrich


ChangeLog:

	* valops.c: Include "objfiles.h" and "symtab.h".
	(find_function_in_inferior): New argument OBJF_P.  Use it to return
	objfile where function is defined.  Use per-objfile arch types
	instead of builtin_type_ to define default return type.

	* linux-fork.c (checkpoint_command): Update calls.  Use per-objfile
	architecture to define inferior call argument types.
	* gcore.c (derive_heap_segment): Likewise.
	* objc-lang.c (value_nsstring): Likewise.
	* scm-lang.c (scm_lookup_name): Likewise.
	* scm-valprint.c (scm_inferior_print): Likewise.
	* valops.c (value_allocate_space_in_inferior): Likewise.

	* eval.c (evaluate_subexp_standard): Update calls.
	* objc-lang.c (lookup_objc_class, print_object_command): Likewise.

	* linux-fork.c: Include "objfiles.h".
	* scm-lang.c: Include "objfiles.h".
	* scm-valprint.c: Include "objfiles.h".


Index: gdb-head/gdb/eval.c
===================================================================
--- gdb-head.orig/gdb/eval.c
+++ gdb-head/gdb/eval.c
@@ -1076,8 +1076,9 @@ evaluate_subexp_standard (struct type *e
 	    type = lookup_function_type (type);
 	    type = lookup_pointer_type (type);
 
-	    msg_send = find_function_in_inferior ("objc_msg_lookup");
-	    msg_send_stret = find_function_in_inferior ("objc_msg_lookup");
+	    msg_send = find_function_in_inferior ("objc_msg_lookup", NULL);
+	    msg_send_stret
+	      = find_function_in_inferior ("objc_msg_lookup", NULL);
 
 	    msg_send = value_from_pointer (type, value_as_address (msg_send));
 	    msg_send_stret = value_from_pointer (type, 
@@ -1085,9 +1086,10 @@ evaluate_subexp_standard (struct type *e
 	  }
 	else
 	  {
-	    msg_send = find_function_in_inferior ("objc_msgSend");
+	    msg_send = find_function_in_inferior ("objc_msgSend", NULL);
 	    /* Special dispatcher for methods returning structs */
-	    msg_send_stret = find_function_in_inferior ("objc_msgSend_stret");
+	    msg_send_stret
+	      = find_function_in_inferior ("objc_msgSend_stret", NULL);
 	  }
 
 	/* Verify the target object responds to this method. The
Index: gdb-head/gdb/gcore.c
===================================================================
--- gdb-head.orig/gdb/gcore.c
+++ gdb-head/gdb/gcore.c
@@ -215,6 +215,8 @@ derive_stack_segment (bfd_vma *bottom, b
 static int
 derive_heap_segment (bfd *abfd, bfd_vma *bottom, bfd_vma *top)
 {
+  struct objfile *sbrk_objf;
+  struct gdbarch *gdbarch;
   bfd_vma top_of_data_memory = 0;
   bfd_vma top_of_heap = 0;
   bfd_size_type sec_size;
@@ -256,20 +258,21 @@ derive_heap_segment (bfd *abfd, bfd_vma 
   /* Now get the top-of-heap by calling sbrk in the inferior.  */
   if (lookup_minimal_symbol ("sbrk", NULL, NULL) != NULL)
     {
-      sbrk = find_function_in_inferior ("sbrk");
+      sbrk = find_function_in_inferior ("sbrk", &sbrk_objf);
       if (sbrk == NULL)
 	return 0;
     }
   else if (lookup_minimal_symbol ("_sbrk", NULL, NULL) != NULL)
     {
-      sbrk = find_function_in_inferior ("_sbrk");
+      sbrk = find_function_in_inferior ("_sbrk", &sbrk_objf);
       if (sbrk == NULL)
 	return 0;
     }
   else
     return 0;
 
-  zero = value_from_longest (builtin_type_int, 0);
+  gdbarch = get_objfile_arch (sbrk_objf);
+  zero = value_from_longest (builtin_type (gdbarch)->builtin_int, 0);
   gdb_assert (zero);
   sbrk = call_function_by_hand (sbrk, 1, &zero);
   if (sbrk == NULL)
Index: gdb-head/gdb/linux-fork.c
===================================================================
--- gdb-head.orig/gdb/linux-fork.c
+++ gdb-head/gdb/linux-fork.c
@@ -22,6 +22,7 @@
 #include "regcache.h"
 #include "gdbcmd.h"
 #include "infcall.h"
+#include "objfiles.h"
 #include "gdb_assert.h"
 #include "gdb_string.h"
 #include "linux-fork.h"
@@ -528,6 +529,8 @@ save_detach_fork (int *saved_val)
 static void
 checkpoint_command (char *args, int from_tty)
 {
+  struct objfile *fork_objf;
+  struct gdbarch *gdbarch;
   struct target_waitstatus last_target_waitstatus;
   ptid_t last_target_ptid;
   struct value *fork_fn = NULL, *ret;
@@ -545,14 +548,15 @@ checkpoint_command (char *args, int from
   /* Make the inferior fork, record its (and gdb's) state.  */
 
   if (lookup_minimal_symbol ("fork", NULL, NULL) != NULL)
-    fork_fn = find_function_in_inferior ("fork");
+    fork_fn = find_function_in_inferior ("fork", &fork_objf);
   if (!fork_fn)
     if (lookup_minimal_symbol ("_fork", NULL, NULL) != NULL)
-      fork_fn = find_function_in_inferior ("fork");
+      fork_fn = find_function_in_inferior ("fork", &fork_objf);
   if (!fork_fn)
     error (_("checkpoint: can't find fork function in inferior."));
 
-  ret = value_from_longest (builtin_type_int, 0);
+  gdbarch = get_objfile_arch (fork_objf);
+  ret = value_from_longest (builtin_type (gdbarch)->builtin_int, 0);
   old_chain = save_detach_fork (&temp_detach_fork);
   detach_fork = 0;
   ret = call_function_by_hand (fork_fn, 0, &ret);
Index: gdb-head/gdb/objc-lang.c
===================================================================
--- gdb-head.orig/gdb/objc-lang.c
+++ gdb-head/gdb/objc-lang.c
@@ -117,9 +117,9 @@ lookup_objc_class (char *classname)
     }
 
   if (lookup_minimal_symbol("objc_lookUpClass", 0, 0))
-    function = find_function_in_inferior("objc_lookUpClass");
+    function = find_function_in_inferior("objc_lookUpClass", NULL);
   else if (lookup_minimal_symbol ("objc_lookup_class", 0, 0))
-    function = find_function_in_inferior("objc_lookup_class");
+    function = find_function_in_inferior("objc_lookup_class", NULL);
   else
     {
       complaint (&symfile_complaints, _("no way to lookup Objective-C classes"));
@@ -144,9 +144,9 @@ lookup_child_selector (char *selname)
     }
 
   if (lookup_minimal_symbol("sel_getUid", 0, 0))
-    function = find_function_in_inferior("sel_getUid");
+    function = find_function_in_inferior("sel_getUid", NULL);
   else if (lookup_minimal_symbol ("sel_get_any_uid", 0, 0))
-    function = find_function_in_inferior("sel_get_any_uid");
+    function = find_function_in_inferior("sel_get_any_uid", NULL);
   else
     {
       complaint (&symfile_complaints, _("no way to lookup Objective-C selectors"));
@@ -165,43 +165,50 @@ value_nsstring (char *ptr, int len)
   struct value *function, *nsstringValue;
   struct symbol *sym;
   struct type *type;
+  struct objfile *objf;
+  struct gdbarch *gdbarch;
 
   if (!target_has_execution)
     return 0;		/* Can't call into inferior to create NSString.  */
 
-  sym = lookup_struct_typedef("NSString", 0, 1);
-  if (sym == NULL)
-    sym = lookup_struct_typedef("NXString", 0, 1);
-  if (sym == NULL)
-    type = builtin_type_void_data_ptr;
-  else
-    type = lookup_pointer_type(SYMBOL_TYPE (sym));
-
   stringValue[2] = value_string(ptr, len);
   stringValue[2] = value_coerce_array(stringValue[2]);
   /* _NSNewStringFromCString replaces "istr" after Lantern2A.  */
   if (lookup_minimal_symbol("_NSNewStringFromCString", 0, 0))
     {
-      function = find_function_in_inferior("_NSNewStringFromCString");
+      function = find_function_in_inferior("_NSNewStringFromCString", &objf);
       nsstringValue = call_function_by_hand(function, 1, &stringValue[2]);
     }
   else if (lookup_minimal_symbol("istr", 0, 0))
     {
-      function = find_function_in_inferior("istr");
+      function = find_function_in_inferior("istr", &objf);
       nsstringValue = call_function_by_hand(function, 1, &stringValue[2]);
     }
   else if (lookup_minimal_symbol("+[NSString stringWithCString:]", 0, 0))
     {
-      function = find_function_in_inferior("+[NSString stringWithCString:]");
+      function
+	= find_function_in_inferior("+[NSString stringWithCString:]", &objf);
+      type = builtin_type (get_objfile_arch (objf))->builtin_long;
+
       stringValue[0] = value_from_longest 
-	(builtin_type_long, lookup_objc_class ("NSString"));
+	(type, lookup_objc_class ("NSString"));
       stringValue[1] = value_from_longest 
-	(builtin_type_long, lookup_child_selector ("stringWithCString:"));
+	(type, lookup_child_selector ("stringWithCString:"));
       nsstringValue = call_function_by_hand(function, 3, &stringValue[0]);
     }
   else
     error (_("NSString: internal error -- no way to create new NSString"));
 
+  gdbarch = get_objfile_arch (objf);
+
+  sym = lookup_struct_typedef("NSString", 0, 1);
+  if (sym == NULL)
+    sym = lookup_struct_typedef("NXString", 0, 1);
+  if (sym == NULL)
+    type = builtin_type (gdbarch)->builtin_data_ptr;
+  else
+    type = lookup_pointer_type(SYMBOL_TYPE (sym));
+
   deprecated_set_value_type (nsstringValue, type);
   return nsstringValue;
 }
@@ -1386,7 +1393,7 @@ print_object_command (char *args, int fr
   object_addr = value_as_long (object);
   read_memory (object_addr, &c, 1);
 
-  function = find_function_in_inferior ("_NSPrintForDebugger");
+  function = find_function_in_inferior ("_NSPrintForDebugger", NULL);
   if (function == NULL)
     error (_("Unable to locate _NSPrintForDebugger in child process"));
 
Index: gdb-head/gdb/scm-lang.c
===================================================================
--- gdb-head.orig/gdb/scm-lang.c
+++ gdb-head/gdb/scm-lang.c
@@ -32,6 +32,7 @@
 #include "gdb_string.h"
 #include "gdbcore.h"
 #include "infcall.h"
+#include "objfiles.h"
 
 extern void _initialize_scheme_language (void);
 static struct value *evaluate_subexp_scm (struct type *, struct expression *,
@@ -147,13 +148,19 @@ in_eval_c (void)
 static struct value *
 scm_lookup_name (char *str)
 {
+  struct objfile *objf;
+  struct gdbarch *gdbarch;
   struct value *args[3];
   int len = strlen (str);
   struct value *func;
   struct value *val;
   struct symbol *sym;
+
+  func = find_function_in_inferior ("scm_lookup_cstr", &objf);
+  gdbarch = get_objfile_arch (objf);
+
   args[0] = value_allocate_space_in_inferior (len);
-  args[1] = value_from_longest (builtin_type_int, len);
+  args[1] = value_from_longest (builtin_type (gdbarch)->builtin_int, len);
   write_memory (value_as_long (args[0]), (gdb_byte *) str, len);
 
   if (in_eval_c ()
@@ -165,7 +172,6 @@ scm_lookup_name (char *str)
     /* FIXME in this case, we should try lookup_symbol first */
     args[2] = value_from_longest (builtin_type_scm, SCM_EOL);
 
-  func = find_function_in_inferior ("scm_lookup_cstr");
   val = call_function_by_hand (func, 3, args);
   if (!value_logical_not (val))
     return value_ind (val);
@@ -187,7 +193,7 @@ scm_evaluate_string (char *str, int len)
   write_memory (iaddr, (gdb_byte *) str, len);
   /* FIXME - should find and pass env */
   write_memory (iaddr + len, (gdb_byte *) "", 1);
-  func = find_function_in_inferior ("scm_evstr");
+  func = find_function_in_inferior ("scm_evstr", NULL);
   return call_function_by_hand (func, 1, &addr);
 }
 
Index: gdb-head/gdb/scm-valprint.c
===================================================================
--- gdb-head.orig/gdb/scm-valprint.c
+++ gdb-head/gdb/scm-valprint.c
@@ -30,6 +30,7 @@
 #include "gdbcore.h"
 #include "c-lang.h"
 #include "infcall.h"
+#include "objfiles.h"
 
 static void scm_ipruk (char *, LONGEST, struct ui_file *);
 static void scm_scmlist_print (LONGEST, struct ui_file *, int, int,
@@ -45,13 +46,16 @@ static int
 scm_inferior_print (LONGEST value, struct ui_file *stream, int format,
 		    int deref_ref, int recurse, enum val_prettyprint pretty)
 {
+  struct objfile *objf;
+  struct gdbarch *gdbarch;
   struct value *func, *arg, *result;
   struct symbol *gdb_output_sym, *gdb_output_len_sym;
   char *output;
   int ret, output_len;
 
-  func = find_function_in_inferior ("gdb_print");
-  arg = value_from_longest (builtin_type_CORE_ADDR, value);
+  func = find_function_in_inferior ("gdb_print", &objf);
+  gdbarch = get_objfile_arch (objf);
+  arg = value_from_longest (builtin_type (gdbarch)->builtin_core_addr, value);
 
   result = call_function_by_hand (func, 1, &arg);
   ret = (int) value_as_long (result);
@@ -73,7 +77,7 @@ scm_inferior_print (LONGEST value, struc
 		       (char *) &output_len, sizeof (output_len));
 
 	  output = (char *) alloca (output_len);
-	  remote_buffer = value_at (builtin_type_CORE_ADDR,
+	  remote_buffer = value_at (builtin_type (gdbarch)->builtin_core_addr,
 				    SYMBOL_VALUE_ADDRESS (gdb_output_sym));
 	  read_memory (value_as_address (remote_buffer),
 		       output, output_len);
Index: gdb-head/gdb/valops.c
===================================================================
--- gdb-head.orig/gdb/valops.c
+++ gdb-head/gdb/valops.c
@@ -44,6 +44,8 @@
 #include "gdb_assert.h"
 #include "cp-support.h"
 #include "observer.h"
+#include "objfiles.h"
+#include "symtab.h"
 
 extern int overload_debug;
 /* Local functions.  */
@@ -122,10 +124,12 @@ Overload resolution in evaluating C++ fu
 		    value);
 }
 
-/* Find the address of function name NAME in the inferior.  */
+/* Find the address of function name NAME in the inferior.  If OBJF_P
+   is non-NULL, *OBJF_P will be set to the OBJFILE where the function
+   is defined.  */
 
 struct value *
-find_function_in_inferior (const char *name)
+find_function_in_inferior (const char *name, struct objfile **objf_p)
 {
   struct symbol *sym;
   sym = lookup_symbol (name, 0, VAR_DOMAIN, 0);
@@ -136,6 +140,10 @@ find_function_in_inferior (const char *n
 	  error (_("\"%s\" exists in this program but is not a function."),
 		 name);
 	}
+
+      if (objf_p)
+	*objf_p = SYMBOL_SYMTAB (sym)->objfile;
+
       return value_of_variable (sym, NULL);
     }
   else
@@ -144,12 +152,19 @@ find_function_in_inferior (const char *n
 	lookup_minimal_symbol (name, NULL, NULL);
       if (msymbol != NULL)
 	{
+	  struct objfile *objfile = msymbol_objfile (msymbol);
+	  struct gdbarch *gdbarch = get_objfile_arch (objfile);
+
 	  struct type *type;
 	  CORE_ADDR maddr;
-	  type = lookup_pointer_type (builtin_type_char);
+	  type = lookup_pointer_type (builtin_type (gdbarch)->builtin_char);
 	  type = lookup_function_type (type);
 	  type = lookup_pointer_type (type);
 	  maddr = SYMBOL_VALUE_ADDRESS (msymbol);
+
+	  if (objf_p)
+	    *objf_p = objfile;
+
 	  return value_from_pointer (type, maddr);
 	}
       else
@@ -169,10 +184,12 @@ find_function_in_inferior (const char *n
 struct value *
 value_allocate_space_in_inferior (int len)
 {
+  struct objfile *objf;
+  struct value *val = find_function_in_inferior ("malloc", &objf);
+  struct gdbarch *gdbarch = get_objfile_arch (objf);
   struct value *blocklen;
-  struct value *val = find_function_in_inferior ("malloc");
 
-  blocklen = value_from_longest (builtin_type_int, (LONGEST) len);
+  blocklen = value_from_longest (builtin_type (gdbarch)->builtin_int, len);
   val = call_function_by_hand (val, 1, &blocklen);
   if (value_logical_not (val))
     {
Index: gdb-head/gdb/value.h
===================================================================
--- gdb-head.orig/gdb/value.h
+++ gdb-head/gdb/value.h
@@ -571,7 +571,8 @@ extern struct value *value_slice (struct
 extern struct value *value_literal_complex (struct value *, struct value *,
 					    struct type *);
 
-extern struct value *find_function_in_inferior (const char *);
+extern struct value *find_function_in_inferior (const char *,
+						struct objfile **);
 
 extern struct value *value_allocate_space_in_inferior (int);
 

-- 
  Dr. Ulrich Weigand
  GNU Toolchain for Linux on System z and Cell BE
  Ulrich.Weigand@de.ibm.com