/* Functions for generic Darwin as target machine for GNU C compiler.
- Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001
+ Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002, 2003
Free Software Foundation, Inc.
Contributed by Apple Computer Inc.
#include "config.h"
#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
#include "rtl.h"
#include "regs.h"
#include "hard-reg-set.h"
#include "reload.h"
#include "function.h"
#include "ggc.h"
-
-#include "darwin-protos.h"
-
-extern void machopic_output_stub PARAMS ((FILE *, const char *, const char *));
+#include "langhooks.h"
+#include "tm_p.h"
static int machopic_data_defined_p PARAMS ((const char *));
-static int func_name_maybe_scoped PARAMS ((const char *));
static void update_non_lazy_ptrs PARAMS ((const char *));
+static void update_stubs PARAMS ((const char *));
int
name_needs_quotes (name)
{
int c;
while ((c = *name++) != '\0')
- if (!isalnum (c) && c != '_')
+ if (! ISIDNUM (c))
return 1;
return 0;
}
/* This module assumes that (const (symbol_ref "foo")) is a legal pic
reference, which will not be changed. */
-static tree machopic_defined_list;
+static GTY(()) tree machopic_defined_list;
enum machopic_addr_class
machopic_classify_ident (ident)
else if (name[1] == 'T')
return MACHOPIC_DEFINED_FUNCTION;
+ /* It is possible that someone is holding a "stale" name, which has
+ since been defined. See if there is a "defined" name (i.e,
+ different from NAME only in having a '!D_' or a '!T_' instead of
+ a '!d_' or '!t_' prefix) in the identifier hash tables. If so, say
+ that this identifier is defined. */
+ else if (name[1] == 'd' || name[1] == 't')
+ {
+ char *new_name;
+ new_name = (char *)alloca (strlen (name) + 1);
+ strcpy (new_name, name);
+ new_name[1] = (name[1] == 'd') ? 'D' : 'T';
+ if (maybe_get_identifier (new_name) != NULL)
+ return (name[1] == 'd') ? MACHOPIC_DEFINED_DATA
+ : MACHOPIC_DEFINED_FUNCTION;
+ }
+
for (temp = machopic_defined_list; temp != NULL_TREE; temp = TREE_CHAIN (temp))
{
if (ident == TREE_VALUE (temp))
}
/* This is a static to make inline functions work. The rtx
- representing the PIC base symbol always points to here. */
+ representing the PIC base symbol always points to here. */
static char function_base[32];
-static int current_pic_label_num;
+static GTY(()) int current_pic_label_num;
-char *
+const char *
machopic_function_base_name ()
{
- static char *name = NULL;
+ static const char *name = NULL;
static const char *current_name;
current_name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl));
return function_base;
}
-static tree machopic_non_lazy_pointers = NULL;
+static GTY(()) tree machopic_non_lazy_pointers;
/* Return a non-lazy pointer name corresponding to the given name,
either by finding it in our list of pointer names, or by generating
a new one. */
-char *
+const char *
machopic_non_lazy_ptr_name (name)
const char *name;
{
- char *temp_name;
+ const char *temp_name;
tree temp, ident = get_identifier (name);
for (temp = machopic_non_lazy_pointers;
return IDENTIFIER_POINTER (TREE_PURPOSE (temp));
}
- STRIP_NAME_ENCODING (name, name);
+ name = darwin_strip_name_encoding (name);
/* Try again, but comparing names this time. */
for (temp = machopic_non_lazy_pointers;
if (TREE_VALUE (temp))
{
temp_name = IDENTIFIER_POINTER (TREE_VALUE (temp));
- STRIP_NAME_ENCODING (temp_name, temp_name);
+ temp_name = darwin_strip_name_encoding (temp_name);
if (strcmp (name, temp_name) == 0)
return IDENTIFIER_POINTER (TREE_PURPOSE (temp));
}
}
}
-static tree machopic_stubs = 0;
-
-/* Make sure the GC knows about our homemade lists. */
-
-void
-machopic_add_gc_roots ()
-{
- ggc_add_tree_root (&machopic_defined_list, 1);
- ggc_add_tree_root (&machopic_non_lazy_pointers, 1);
- ggc_add_tree_root (&machopic_stubs, 1);
-}
+static GTY(()) tree machopic_stubs;
/* Return the name of the stub corresponding to the given name,
generating a new stub name if necessary. */
-char *
+const char *
machopic_stub_name (name)
const char *name;
{
tree temp, ident = get_identifier (name);
-
+ const char *tname;
+
for (temp = machopic_stubs;
temp != NULL_TREE;
temp = TREE_CHAIN (temp))
{
if (ident == TREE_VALUE (temp))
return IDENTIFIER_POINTER (TREE_PURPOSE (temp));
+ tname = IDENTIFIER_POINTER (TREE_VALUE (temp));
+ if (strcmp (name, tname) == 0)
+ return IDENTIFIER_POINTER (TREE_PURPOSE (temp));
+ /* A library call name might not be section-encoded yet, so try
+ it against a stripped name. */
+ if (name[0] != '!'
+ && tname[0] == '!'
+ && strcmp (name, tname + 4) == 0)
+ return IDENTIFIER_POINTER (TREE_PURPOSE (temp));
}
- STRIP_NAME_ENCODING (name, name);
+ name = darwin_strip_name_encoding (name);
{
char *buffer;
const char *name;
int validate_stub;
{
- char *real_name;
+ const char *real_name;
tree temp, ident = get_identifier (name), id2;
for (temp = (validate_stub ? machopic_stubs : machopic_non_lazy_pointers);
TREE_USED (temp) = 1;
if (TREE_CODE (TREE_VALUE (temp)) == IDENTIFIER_NODE)
TREE_SYMBOL_REFERENCED (TREE_VALUE (temp)) = 1;
- STRIP_NAME_ENCODING (real_name, IDENTIFIER_POINTER (TREE_VALUE (temp)));
+ real_name = IDENTIFIER_POINTER (TREE_VALUE (temp));
+ real_name = darwin_strip_name_encoding (real_name);
id2 = maybe_get_identifier (real_name);
if (id2)
TREE_SYMBOL_REFERENCED (id2) = 1;
if (machopic_data_defined_p (name))
{
+#if defined (TARGET_TOC) || defined (HAVE_lo_sum)
rtx pic_base = gen_rtx (SYMBOL_REF, Pmode,
machopic_function_base_name ());
rtx offset = gen_rtx (CONST, Pmode,
gen_rtx (MINUS, Pmode, orig, pic_base));
+#endif
#if defined (TARGET_TOC) /* i.e., PowerPC */
rtx hi_sum_reg = reg;
else
result = gen_rtx (PLUS, Pmode, base, orig);
- if (RTX_UNCHANGING_P (base) && RTX_UNCHANGING_P (orig))
- RTX_UNCHANGING_P (result) = 1;
-
if (MACHOPIC_JUST_INDIRECT && GET_CODE (base) == MEM)
{
if (reg)
return ptr_ref;
}
-/* For MACHOPIC_INDIRECT_CALL_TARGET below, we need to beware of:
-
- extern "C" { int f(); }
- struct X { int f(); int g(); };
- int X::f() { ::f(); }
- int X::g() { ::f(); f();}
-
- This is hairy. Both calls to "::f()" need to be indirect (i.e., to
- appropriate symbol stubs), but since MACHOPIC_NAME_DEFINED_P calls
- GET_IDENTIFIER which treats "f" as "X::f", and "X::f" is indeed (being)
- defined somewhere in "X"'s inheritance hierarchy, MACHOPIC_NAME_DEFINED_P
- returns TRUE when called with "f", which means that
- MACHOPIC_INDIRECT_CALL_TARGET uses an "internal" call instead of an
- indirect one as it should.
-
- Our quick-n-dirty solution to this is to call the following
- FUNC_NAME_MAYBE_SCOPED routine which (only for C++) checks whether
- FNAME -- the name of the function which we're calling -- is NOT a
- mangled C++ name, AND if the current function being compiled is a
- method, and if so, use an "external" or "indirect" call.
-
- Note that this function will be called ONLY when MACHOPIC_INDIRECT_TARGET_P
- has already indicated that the target is NOT indirect.
-
- This conservative solution will sometimes make indirect calls where
- it might have been possible to make direct ones.
-
- FUNC_NAME_MAYBE_SCOPED returns 1 to indicate a "C" name (not scoped),
- which in turns means we should create a stub for an indirect call.
- */
-
-static int is_cplusplus = -1;
-
-static int
-func_name_maybe_scoped (fname)
- const char *fname;
-{
-
- if (is_cplusplus < 0)
- is_cplusplus = (strcmp (lang_identify (), "cplusplus") == 0);
-
- if (is_cplusplus)
- {
- /* If we have a method, then check whether the function we're trying to
- call is a "C" function. If so, we should use an indirect call.
-
- It turns out to be hard to tell whether "we have a method", since
- static member functions have a TREE_CODE of FUNCTION_TYPE, as do
- namespace-level non-member functions. So here, we always look for
- an extern-"C"-like name, and make stubs for them no matter the
- calling context. This is temporary, and leaves nagging suspicion
- that improvements should be possible here. (I.e., I suspect that
- it can still sometimes make stubs where it needn't.) */
-
- /* if (1 || TREE_CODE (TREE_TYPE (current_function_decl)) == METHOD_TYPE) */
- {
- /* If fname is of the form "f__1X" or "f__Fv", it's C++. */
- while (*fname == '_') ++fname; /* skip leading underscores */
- while (*fname != 0)
- {
- if (fname[0] == '_' && fname[1] == '_'
- && (fname[2] == 'F' || (fname[2] >= '0' && fname[2] <= '9')))
- return 0;
- ++fname;
- }
- /* Not a C++ mangled name: must be "C", in which case play safe. */
- return 1;
- }
- }
- return 0;
-}
-
/* Transform TARGET (a MEM), which is a function call target, to the
corresponding symbol_stub if necessary. Return a new MEM. */
enum machine_mode mode = GET_MODE (XEXP (target, 0));
const char *name = XSTR (XEXP (target, 0), 0);
- if (!machopic_name_defined_p (name) || func_name_maybe_scoped (name))
+ /* If the name is already defined, we need do nothing. */
+ if (name[0] == '!' && name[1] == 'T')
+ return target;
+
+ if (!machopic_name_defined_p (name))
{
const char *stub_name = machopic_stub_name (name);
}
#if !defined (TARGET_TOC)
- RTX_UNCHANGING_P (pic_ref) = 1;
emit_move_insn (reg, pic_ref);
pic_ref = gen_rtx (MEM, GET_MODE (orig), reg);
#endif
+ RTX_UNCHANGING_P (pic_ref) = 1;
}
else
{
gen_rtx (LO_SUM, Pmode,
hi_sum_reg, offset)));
pic_ref = reg;
+ RTX_UNCHANGING_P (pic_ref) = 1;
#else
emit_insn (gen_rtx (SET, VOIDmode, reg,
gen_rtx (HIGH, Pmode, offset)));
gen_rtx (LO_SUM, Pmode, reg, offset)));
pic_ref = gen_rtx (PLUS, Pmode,
pic_offset_table_rtx, reg);
+ RTX_UNCHANGING_P (pic_ref) = 1;
#endif
}
else
}
}
- RTX_UNCHANGING_P (pic_ref) = 1;
-
if (GET_CODE (pic_ref) != REG)
{
if (reg != 0)
temp != NULL_TREE;
temp = TREE_CHAIN (temp))
{
- char *sym_name = IDENTIFIER_POINTER (TREE_VALUE (temp));
- char *stub_name = IDENTIFIER_POINTER (TREE_PURPOSE (temp));
+ const char *sym_name = IDENTIFIER_POINTER (TREE_VALUE (temp));
+ const char *stub_name = IDENTIFIER_POINTER (TREE_PURPOSE (temp));
char *sym;
char *stub;
if (! TREE_USED (temp))
continue;
- STRIP_NAME_ENCODING (sym_name, sym_name);
+ /* If the symbol is actually defined, we don't need a stub. */
+ if (sym_name[0] == '!' && sym_name[1] == 'T')
+ continue;
+
+ sym_name = darwin_strip_name_encoding (sym_name);
sym = alloca (strlen (sym_name) + 2);
if (sym_name[0] == '*' || sym_name[0] == '&')
temp != NULL_TREE;
temp = TREE_CHAIN (temp))
{
- char *sym_name = IDENTIFIER_POINTER (TREE_VALUE (temp));
- char *lazy_name = IDENTIFIER_POINTER (TREE_PURPOSE (temp));
-#if 0
- tree decl = lookup_name_darwin (TREE_VALUE (temp));
-#endif
+ const char *const sym_name = IDENTIFIER_POINTER (TREE_VALUE (temp));
+ const char *const lazy_name = IDENTIFIER_POINTER (TREE_PURPOSE (temp));
if (! TREE_USED (temp))
continue;
- if (machopic_ident_defined_p (TREE_VALUE (temp))
-#if 0 /* add back when we have private externs */
- || (decl && DECL_PRIVATE_EXTERN (decl))
-#endif
- )
+ if (machopic_ident_defined_p (TREE_VALUE (temp)))
{
data_section ();
- assemble_align (UNITS_PER_WORD * BITS_PER_UNIT);
+ assemble_align (GET_MODE_ALIGNMENT (Pmode));
assemble_label (lazy_name);
assemble_integer (gen_rtx (SYMBOL_REF, Pmode, sym_name),
- GET_MODE_SIZE (Pmode), 1);
+ GET_MODE_SIZE (Pmode),
+ GET_MODE_ALIGNMENT (Pmode), 1);
}
else
{
assemble_name (asm_out_file, sym_name);
fprintf (asm_out_file, "\n");
- assemble_integer (const0_rtx, GET_MODE_SIZE (Pmode), 1);
+ assemble_integer (const0_rtx, GET_MODE_SIZE (Pmode),
+ GET_MODE_ALIGNMENT (Pmode), 1);
}
}
}
&& machopic_name_defined_p (XSTR (XEXP (op, 1), 0)))
return 1;
-#if 0 /*def TARGET_TOC*/ /* i.e., PowerPC */
- /* Without this statement, the compiler crashes while compiling enquire.c
- when targetting PowerPC. It is not known why this code is not needed
- when targetting other processors. */
- else if (GET_CODE (op) == SYMBOL_REF
- && (machopic_classify_name (XSTR (op, 0))
- == MACHOPIC_DEFINED_FUNCTION))
- {
- return 1;
- }
-#endif
-
return 0;
}
use later. */
void
-darwin_encode_section_info (decl)
+darwin_encode_section_info (decl, first)
tree decl;
+ int first ATTRIBUTE_UNUSED;
{
char code = '\0';
int defined = 0;
rtx sym_ref;
- char *orig_str, *new_str;
+ const char *orig_str;
+ char *new_str;
size_t len, new_len;
if ((TREE_CODE (decl) == FUNCTION_DECL
|| TREE_CODE (decl) == VAR_DECL)
+ && !DECL_EXTERNAL (decl)
&& ((TREE_STATIC (decl)
&& (!DECL_COMMON (decl) || !TREE_PUBLIC (decl)))
- || DECL_INITIAL (decl)))
+ || (DECL_INITIAL (decl)
+ && DECL_INITIAL (decl) != error_mark_node)))
defined = 1;
if (TREE_CODE (decl) == FUNCTION_DECL)
memcpy (new_str, orig_str, len);
new_str[1] = code;
XSTR (sym_ref, 0) = ggc_alloc_string (new_str, len);
- /* The non-lazy pointer list may have captured references to the
- old encoded name, change them. */
- update_non_lazy_ptrs (XSTR (sym_ref, 0));
}
else
{
memcpy (new_str + 4, orig_str, len);
XSTR (sym_ref, 0) = ggc_alloc_string (new_str, new_len);
}
+ /* The non-lazy pointer list may have captured references to the
+ old encoded name, change them. */
+ if (TREE_CODE (decl) == VAR_DECL)
+ update_non_lazy_ptrs (XSTR (sym_ref, 0));
+ else
+ update_stubs (XSTR (sym_ref, 0));
+}
+
+/* Undo the effects of the above. */
+
+const char *
+darwin_strip_name_encoding (str)
+ const char *str;
+{
+ return str[0] == '!' ? str + 4 : str;
}
/* Scan the list of non-lazy pointers and update any recorded names whose
update_non_lazy_ptrs (name)
const char *name;
{
- char *name1, *name2;
+ const char *name1, *name2;
tree temp;
- STRIP_NAME_ENCODING (name1, name);
+ name1 = darwin_strip_name_encoding (name);
for (temp = machopic_non_lazy_pointers;
temp != NULL_TREE;
temp = TREE_CHAIN (temp))
{
- char *sym_name = IDENTIFIER_POINTER (TREE_VALUE (temp));
+ const char *sym_name = IDENTIFIER_POINTER (TREE_VALUE (temp));
if (*sym_name == '!')
{
- STRIP_NAME_ENCODING (name2, sym_name);
+ name2 = darwin_strip_name_encoding (sym_name);
if (strcmp (name1, name2) == 0)
{
- IDENTIFIER_POINTER (TREE_VALUE (temp)) = name;
+ /* FIXME: This breaks the identifier hash table. */
+ IDENTIFIER_NODE_CHECK (TREE_VALUE (temp))->identifier.id.str
+ = (unsigned char *) name;
break;
}
}
}
}
+
+/* Function NAME is being defined, and its label has just been output.
+ If there's already a reference to a stub for this function, we can
+ just emit the stub label now and we don't bother emitting the stub later. */
+
+void
+machopic_output_possible_stub_label (file, name)
+ FILE *file;
+ const char *name;
+{
+ tree temp;
+
+
+ /* Ensure we're looking at a section-encoded name. */
+ if (name[0] != '!' || (name[1] != 't' && name[1] != 'T'))
+ return;
+
+ for (temp = machopic_stubs;
+ temp != NULL_TREE;
+ temp = TREE_CHAIN (temp))
+ {
+ const char *sym_name;
+
+ sym_name = IDENTIFIER_POINTER (TREE_VALUE (temp));
+ if (sym_name[0] == '!' && sym_name[1] == 'T'
+ && ! strcmp (name+2, sym_name+2))
+ {
+ ASM_OUTPUT_LABEL (file, IDENTIFIER_POINTER (TREE_PURPOSE (temp)));
+ /* Avoid generating a stub for this. */
+ TREE_USED (temp) = 0;
+ break;
+ }
+ }
+}
+
+/* Scan the list of stubs and update any recorded names whose
+ stripped name matches the argument. */
+
+static void
+update_stubs (name)
+ const char *name;
+{
+ const char *name1, *name2;
+ tree temp;
+
+ name1 = darwin_strip_name_encoding (name);
+
+ for (temp = machopic_stubs;
+ temp != NULL_TREE;
+ temp = TREE_CHAIN (temp))
+ {
+ const char *sym_name = IDENTIFIER_POINTER (TREE_VALUE (temp));
+
+ if (*sym_name == '!')
+ {
+ name2 = darwin_strip_name_encoding (sym_name);
+ if (strcmp (name1, name2) == 0)
+ {
+ /* FIXME: This breaks the identifier hash table. */
+ IDENTIFIER_NODE_CHECK (TREE_VALUE (temp))->identifier.id.str
+ = (unsigned char *) name;
+ break;
+ }
+ }
+ }
+}
+
+void
+machopic_select_section (exp, reloc, align)
+ tree exp;
+ int reloc;
+ unsigned HOST_WIDE_INT align ATTRIBUTE_UNUSED;
+{
+ if (TREE_CODE (exp) == STRING_CST)
+ {
+ if (flag_writable_strings)
+ data_section ();
+ else if ((size_t) TREE_STRING_LENGTH (exp) !=
+ strlen (TREE_STRING_POINTER (exp)) + 1)
+ readonly_data_section ();
+ else
+ cstring_section ();
+ }
+ else if (TREE_CODE (exp) == INTEGER_CST
+ || TREE_CODE (exp) == REAL_CST)
+ {
+ tree size = TYPE_SIZE (TREE_TYPE (exp));
+
+ if (TREE_CODE (size) == INTEGER_CST &&
+ TREE_INT_CST_LOW (size) == 4 &&
+ TREE_INT_CST_HIGH (size) == 0)
+ literal4_section ();
+ else if (TREE_CODE (size) == INTEGER_CST &&
+ TREE_INT_CST_LOW (size) == 8 &&
+ TREE_INT_CST_HIGH (size) == 0)
+ literal8_section ();
+ else
+ readonly_data_section ();
+ }
+ else if (TREE_CODE (exp) == CONSTRUCTOR
+ && TREE_TYPE (exp)
+ && TREE_CODE (TREE_TYPE (exp)) == RECORD_TYPE
+ && TYPE_NAME (TREE_TYPE (exp)))
+ {
+ tree name = TYPE_NAME (TREE_TYPE (exp));
+ if (TREE_CODE (name) == TYPE_DECL)
+ name = DECL_NAME (name);
+ if (!strcmp (IDENTIFIER_POINTER (name), "NSConstantString"))
+ objc_constant_string_object_section ();
+ else if (!strcmp (IDENTIFIER_POINTER (name), "NXConstantString"))
+ objc_string_object_section ();
+ else if (TREE_READONLY (exp) || TREE_CONSTANT (exp))
+ {
+ if (TREE_SIDE_EFFECTS (exp) || (flag_pic && reloc))
+ const_data_section ();
+ else
+ readonly_data_section ();
+ }
+ else
+ data_section ();
+ }
+ else if (TREE_CODE (exp) == VAR_DECL &&
+ DECL_NAME (exp) &&
+ TREE_CODE (DECL_NAME (exp)) == IDENTIFIER_NODE &&
+ IDENTIFIER_POINTER (DECL_NAME (exp)) &&
+ !strncmp (IDENTIFIER_POINTER (DECL_NAME (exp)), "_OBJC_", 6))
+ {
+ const char *name = IDENTIFIER_POINTER (DECL_NAME (exp));
+
+ if (!strncmp (name, "_OBJC_CLASS_METHODS_", 20))
+ objc_cls_meth_section ();
+ else if (!strncmp (name, "_OBJC_INSTANCE_METHODS_", 23))
+ objc_inst_meth_section ();
+ else if (!strncmp (name, "_OBJC_CATEGORY_CLASS_METHODS_", 20))
+ objc_cat_cls_meth_section ();
+ else if (!strncmp (name, "_OBJC_CATEGORY_INSTANCE_METHODS_", 23))
+ objc_cat_inst_meth_section ();
+ else if (!strncmp (name, "_OBJC_CLASS_VARIABLES_", 22))
+ objc_class_vars_section ();
+ else if (!strncmp (name, "_OBJC_INSTANCE_VARIABLES_", 25))
+ objc_instance_vars_section ();
+ else if (!strncmp (name, "_OBJC_CLASS_PROTOCOLS_", 22))
+ objc_cat_cls_meth_section ();
+ else if (!strncmp (name, "_OBJC_CLASS_NAME_", 17))
+ objc_class_names_section ();
+ else if (!strncmp (name, "_OBJC_METH_VAR_NAME_", 20))
+ objc_meth_var_names_section ();
+ else if (!strncmp (name, "_OBJC_METH_VAR_TYPE_", 20))
+ objc_meth_var_types_section ();
+ else if (!strncmp (name, "_OBJC_CLASS_REFERENCES", 22))
+ objc_cls_refs_section ();
+ else if (!strncmp (name, "_OBJC_CLASS_", 12))
+ objc_class_section ();
+ else if (!strncmp (name, "_OBJC_METACLASS_", 16))
+ objc_meta_class_section ();
+ else if (!strncmp (name, "_OBJC_CATEGORY_", 15))
+ objc_category_section ();
+ else if (!strncmp (name, "_OBJC_SELECTOR_REFERENCES", 25))
+ objc_selector_refs_section ();
+ else if (!strncmp (name, "_OBJC_SELECTOR_FIXUP", 20))
+ objc_selector_fixup_section ();
+ else if (!strncmp (name, "_OBJC_SYMBOLS", 13))
+ objc_symbols_section ();
+ else if (!strncmp (name, "_OBJC_MODULES", 13))
+ objc_module_info_section ();
+ else if (!strncmp (name, "_OBJC_PROTOCOL_INSTANCE_METHODS_", 32))
+ objc_cat_inst_meth_section ();
+ else if (!strncmp (name, "_OBJC_PROTOCOL_CLASS_METHODS_", 29))
+ objc_cat_cls_meth_section ();
+ else if (!strncmp (name, "_OBJC_PROTOCOL_REFS_", 20))
+ objc_cat_cls_meth_section ();
+ else if (!strncmp (name, "_OBJC_PROTOCOL_", 15))
+ objc_protocol_section ();
+ else if ((TREE_READONLY (exp) || TREE_CONSTANT (exp))
+ && !TREE_SIDE_EFFECTS (exp))
+ {
+ if (flag_pic && reloc)
+ const_data_section ();
+ else
+ readonly_data_section ();
+ }
+ else
+ data_section ();
+ }
+ else if (TREE_READONLY (exp) || TREE_CONSTANT (exp))
+ {
+ if (TREE_SIDE_EFFECTS (exp) || (flag_pic && reloc))
+ const_data_section ();
+ else
+ readonly_data_section ();
+ }
+ else
+ data_section ();
+}
+
+/* This can be called with address expressions as "rtx".
+ They must go in "const". */
+
+void
+machopic_select_rtx_section (mode, x, align)
+ enum machine_mode mode;
+ rtx x;
+ unsigned HOST_WIDE_INT align ATTRIBUTE_UNUSED;
+{
+ if (GET_MODE_SIZE (mode) == 8)
+ literal8_section ();
+ else if (GET_MODE_SIZE (mode) == 4
+ && (GET_CODE (x) == CONST_INT
+ || GET_CODE (x) == CONST_DOUBLE))
+ literal4_section ();
+ else
+ const_section ();
+}
+
+void
+machopic_asm_out_constructor (symbol, priority)
+ rtx symbol;
+ int priority ATTRIBUTE_UNUSED;
+{
+ if (flag_pic)
+ mod_init_section ();
+ else
+ constructor_section ();
+ assemble_align (POINTER_SIZE);
+ assemble_integer (symbol, POINTER_SIZE / BITS_PER_UNIT, POINTER_SIZE, 1);
+
+ if (!flag_pic)
+ fprintf (asm_out_file, ".reference .constructors_used\n");
+}
+
+void
+machopic_asm_out_destructor (symbol, priority)
+ rtx symbol;
+ int priority ATTRIBUTE_UNUSED;
+{
+ if (flag_pic)
+ mod_term_section ();
+ else
+ destructor_section ();
+ assemble_align (POINTER_SIZE);
+ assemble_integer (symbol, POINTER_SIZE / BITS_PER_UNIT, POINTER_SIZE, 1);
+
+ if (!flag_pic)
+ fprintf (asm_out_file, ".reference .destructors_used\n");
+}
+
+void
+darwin_globalize_label (stream, name)
+ FILE *stream;
+ const char *name;
+{
+ if (!!strncmp (name, "_OBJC_", 6))
+ default_globalize_label (stream, name);
+}
+
+/* Output a difference of two labels that will be an assembly time
+ constant if the two labels are local. (.long lab1-lab2 will be
+ very different if lab1 is at the boundary between two sections; it
+ will be relocated according to the second section, not the first,
+ so one ends up with a difference between labels in different
+ sections, which is bad in the dwarf2 eh context for instance.) */
+
+static int darwin_dwarf_label_counter;
+
+void
+darwin_asm_output_dwarf_delta (file, size, lab1, lab2)
+ FILE *file;
+ int size ATTRIBUTE_UNUSED;
+ const char *lab1, *lab2;
+{
+ const char *p = lab1 + (lab1[0] == '*');
+ int islocaldiff = (p[0] == 'L');
+
+ if (islocaldiff)
+ fprintf (file, "\t.set L$set$%d,", darwin_dwarf_label_counter);
+ else
+ fprintf (file, "\t%s\t", ".long");
+ assemble_name (file, lab1);
+ fprintf (file, "-");
+ assemble_name (file, lab2);
+ if (islocaldiff)
+ fprintf (file, "\n\t.long L$set$%d", darwin_dwarf_label_counter++);
+}
+
+#include "gt-darwin.h"
+
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