/* Functions for generic Darwin as target machine for GNU C compiler.
- Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002, 2003
+ Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002, 2003, 2004
Free Software Foundation, Inc.
Contributed by Apple Computer Inc.
#include "ggc.h"
#include "langhooks.h"
#include "tm_p.h"
+#include "errors.h"
static int machopic_data_defined_p (const char *);
static void update_non_lazy_ptrs (const char *);
static void update_stubs (const char *);
+static const char *machopic_non_lazy_ptr_name (const char*);
int
name_needs_quotes (const char *name)
{
int c;
while ((c = *name++) != '\0')
- if (! ISIDNUM (c))
+ if (! ISIDNUM (c) && c != '.' && c != '$')
return 1;
return 0;
}
&& name[5] == '_'));
tree temp;
- /* The PIC base symbol is always defined. */
+ /* The PIC base symbol is always defined. */
if (! strcmp (name, "<pic base>"))
return MACHOPIC_DEFINED_DATA;
const char *
machopic_function_base_name (void)
{
- const char *current_name;
/* if dynamic-no-pic is on, we should not get here */
if (MACHO_DYNAMIC_NO_PIC_P)
abort ();
- current_name =
- IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl));
if (function_base == NULL)
function_base =
{
const char *current_name;
- /* If dynamic-no-pic is on, we should not get here. */
+ /* If dynamic-no-pic is on, we should not get here. */
if (MACHO_DYNAMIC_NO_PIC_P)
abort ();
current_name =
either by finding it in our list of pointer names, or by generating
a new one. */
-const char *
+static const char *
machopic_non_lazy_ptr_name (const char *name)
{
const char *temp_name;
{
char *buffer;
+ int namelen = strlen (name);
+ int bufferlen = 0;
tree ptr_name;
- buffer = alloca (strlen (name) + 20);
+ buffer = alloca (namelen + strlen("$non_lazy_ptr") + 5);
strcpy (buffer, "&L");
+ bufferlen = 2;
if (name[0] == '*')
- strcat (buffer, name+1);
+ {
+ memcpy (buffer + bufferlen, name+1, namelen-1+1);
+ bufferlen += namelen-1;
+ }
else
{
- strcat (buffer, "_");
- strcat (buffer, name);
+ buffer[bufferlen] = '_';
+ memcpy (buffer + bufferlen +1, name, namelen+1);
+ bufferlen += namelen +1;
}
- strcat (buffer, "$non_lazy_ptr");
+ memcpy (buffer + bufferlen, "$non_lazy_ptr", strlen("$non_lazy_ptr")+1);
+ bufferlen += strlen("$non_lazy_ptr");
ptr_name = get_identifier (buffer);
machopic_non_lazy_pointers
{
char *buffer;
+ int bufferlen = 0;
+ int namelen = strlen (name);
tree ptr_name;
int needs_quotes = name_needs_quotes (name);
- buffer = alloca (strlen (name) + 20);
+ buffer = alloca (namelen + 20);
if (needs_quotes)
- strcpy (buffer, "&\"L");
+ {
+ strcpy (buffer, "&\"L");
+ bufferlen = strlen("&\"L");
+ }
else
- strcpy (buffer, "&L");
+ {
+ strcpy (buffer, "&L");
+ bufferlen = strlen("&L");
+ }
+
if (name[0] == '*')
{
- strcat (buffer, name+1);
+ memcpy (buffer + bufferlen, name+1, namelen - 1 +1);
+ bufferlen += namelen - 1;
}
else
{
- strcat (buffer, "_");
- strcat (buffer, name);
+ buffer[bufferlen] = '_';
+ memcpy (buffer + bufferlen +1, name, namelen+1);
+ bufferlen += namelen +1;
}
if (needs_quotes)
- strcat (buffer, "$stub\"");
+ {
+ memcpy (buffer + bufferlen, "$stub\"", strlen("$stub\"")+1);
+ bufferlen += strlen("$stub\"");
+ }
else
- strcat (buffer, "$stub");
+ {
+ memcpy (buffer + bufferlen, "$stub", strlen("$stub")+1);
+ bufferlen += strlen("$stub");
+ }
ptr_name = get_identifier (buffer);
machopic_stubs = tree_cons (ptr_name, ident, machopic_stubs);
if (GET_CODE (orig) == SYMBOL_REF)
{
const char *name = XSTR (orig, 0);
-
int defined = machopic_data_defined_p (name);
if (defined && MACHO_DYNAMIC_NO_PIC_P)
else if (defined)
{
#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));
+ 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;
+ rtx hi_sum_reg = (no_new_pseudos ? reg : gen_reg_rtx (Pmode));
if (reg == NULL)
abort ();
- emit_insn (gen_rtx (SET, Pmode, hi_sum_reg,
- gen_rtx (PLUS, Pmode, pic_offset_table_rtx,
- gen_rtx (HIGH, Pmode, offset))));
- emit_insn (gen_rtx (SET, Pmode, reg,
- gen_rtx (LO_SUM, Pmode, hi_sum_reg, offset)));
+ emit_insn (gen_rtx_SET (Pmode, hi_sum_reg,
+ gen_rtx_PLUS (Pmode, pic_offset_table_rtx,
+ gen_rtx_HIGH (Pmode, offset))));
+ emit_insn (gen_rtx_SET (Pmode, reg,
+ gen_rtx_LO_SUM (Pmode, hi_sum_reg, offset)));
orig = reg;
#else
#if defined (HAVE_lo_sum)
if (reg == 0) abort ();
- emit_insn (gen_rtx (SET, VOIDmode, reg,
- gen_rtx (HIGH, Pmode, offset)));
- emit_insn (gen_rtx (SET, VOIDmode, reg,
- gen_rtx (LO_SUM, Pmode, reg, offset)));
- emit_insn (gen_rtx (USE, VOIDmode,
- gen_rtx_REG (Pmode, PIC_OFFSET_TABLE_REGNUM)));
+ emit_insn (gen_rtx_SET (VOIDmode, reg,
+ gen_rtx_HIGH (Pmode, offset)));
+ emit_insn (gen_rtx_SET (VOIDmode, reg,
+ gen_rtx_LO_SUM (Pmode, reg, offset)));
+ emit_insn (gen_rtx_USE (VOIDmode, pic_offset_table_rtx));
- orig = gen_rtx (PLUS, Pmode, pic_offset_table_rtx, reg);
+ orig = gen_rtx_PLUS (Pmode, pic_offset_table_rtx, reg);
#endif
#endif
return orig;
}
- ptr_ref = gen_rtx (SYMBOL_REF, Pmode,
- machopic_non_lazy_ptr_name (name));
+ ptr_ref = gen_rtx_SYMBOL_REF (Pmode,
+ machopic_non_lazy_ptr_name (name));
ptr_ref = gen_rtx_MEM (Pmode, ptr_ref);
RTX_UNCHANGING_P (ptr_ref) = 1;
if (MACHOPIC_PURE && GET_CODE (orig) == CONST_INT)
result = plus_constant (base, INTVAL (orig));
else
- result = gen_rtx (PLUS, Pmode, base, orig);
+ result = gen_rtx_PLUS (Pmode, base, orig);
if (MACHOPIC_JUST_INDIRECT && GET_CODE (base) == MEM)
{
{
const char *stub_name = machopic_stub_name (name);
- XEXP (target, 0) = gen_rtx (SYMBOL_REF, mode, stub_name);
+ XEXP (target, 0) = gen_rtx_SYMBOL_REF (mode, stub_name);
RTX_UNCHANGING_P (target) = 1;
}
}
if (MACHO_DYNAMIC_NO_PIC_P)
pic_base = CONST0_RTX (Pmode);
else
- pic_base = gen_rtx (SYMBOL_REF, Pmode, machopic_function_base_name ());
+ pic_base = gen_rtx_SYMBOL_REF (Pmode, machopic_function_base_name ());
if (GET_CODE (orig) == MEM)
{
emit_insn (gen_macho_high (temp_reg, asym));
mem = gen_rtx_MEM (GET_MODE (orig),
- gen_rtx (LO_SUM, Pmode, temp_reg, asym));
+ gen_rtx_LO_SUM (Pmode, temp_reg, asym));
RTX_UNCHANGING_P (mem) = 1;
- emit_insn (gen_rtx (SET, VOIDmode, reg, mem));
+ emit_insn (gen_rtx_SET (VOIDmode, reg, mem));
#else
/* Some other CPU -- WriteMe! but right now there are no other platform that can use dynamic-no-pic */
abort ();
if (GET_CODE (XEXP (orig, 0)) == SYMBOL_REF
|| GET_CODE (XEXP (orig, 0)) == LABEL_REF)
{
- rtx offset = gen_rtx (CONST, Pmode,
- gen_rtx (MINUS, Pmode,
- XEXP (orig, 0), pic_base));
+ rtx offset = gen_rtx_CONST (Pmode,
+ gen_rtx_MINUS (Pmode,
+ XEXP (orig, 0),
+ pic_base));
#if defined (TARGET_TOC) /* i.e., PowerPC */
/* Generating a new reg may expose opportunities for
common subexpression elimination. */
- rtx hi_sum_reg =
- (reload_in_progress ? reg : gen_reg_rtx (SImode));
-
- emit_insn (gen_rtx (SET, Pmode, hi_sum_reg,
- gen_rtx (PLUS, Pmode,
- pic_offset_table_rtx,
- gen_rtx (HIGH, Pmode, offset))));
- emit_insn (gen_rtx (SET, VOIDmode, reg,
- gen_rtx (MEM, GET_MODE (orig),
- gen_rtx (LO_SUM, Pmode,
- hi_sum_reg, offset))));
- pic_ref = reg;
+ rtx hi_sum_reg = no_new_pseudos ? reg : gen_reg_rtx (SImode);
+ rtx mem;
+ rtx insn;
+ rtx sum;
+
+ sum = gen_rtx_HIGH (Pmode, offset);
+ if (! MACHO_DYNAMIC_NO_PIC_P)
+ sum = gen_rtx_PLUS (Pmode, pic_offset_table_rtx, sum);
+ emit_insn (gen_rtx_SET (Pmode, hi_sum_reg, sum));
+
+ mem = gen_rtx_MEM (GET_MODE (orig),
+ gen_rtx_LO_SUM (Pmode,
+ hi_sum_reg, offset));
+ RTX_UNCHANGING_P (mem) = 1;
+ insn = emit_insn (gen_rtx_SET (VOIDmode, reg, mem));
+ REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_EQUAL, pic_ref,
+ REG_NOTES (insn));
+
+ pic_ref = reg;
#else
- emit_insn (gen_rtx (USE, VOIDmode,
- gen_rtx_REG (Pmode, PIC_OFFSET_TABLE_REGNUM)));
-
- emit_insn (gen_rtx (SET, VOIDmode, reg,
- gen_rtx (HIGH, Pmode,
- gen_rtx (CONST, Pmode, offset))));
- emit_insn (gen_rtx (SET, VOIDmode, reg,
- gen_rtx (LO_SUM, Pmode, reg,
- gen_rtx (CONST, Pmode, offset))));
- pic_ref = gen_rtx (PLUS, Pmode,
- pic_offset_table_rtx, reg);
+ emit_insn (gen_rtx_USE (VOIDmode,
+ gen_rtx_REG (Pmode,
+ PIC_OFFSET_TABLE_REGNUM)));
+
+ emit_insn (gen_rtx_SET (VOIDmode, reg,
+ gen_rtx_HIGH (Pmode,
+ gen_rtx_CONST (Pmode,
+ offset))));
+ emit_insn (gen_rtx_SET (VOIDmode, reg,
+ gen_rtx_LO_SUM (Pmode, reg,
+ gen_rtx_CONST (Pmode, offset))));
+ pic_ref = gen_rtx_PLUS (Pmode,
+ pic_offset_table_rtx, reg);
#endif
}
else
pic = reg;
}
#if 0
- emit_insn (gen_rtx (USE, VOIDmode,
- gen_rtx (REG, Pmode, PIC_OFFSET_TABLE_REGNUM)));
+ emit_insn (gen_rtx_USE (VOIDmode,
+ gen_rtx_REG (Pmode,
+ PIC_OFFSET_TABLE_REGNUM)));
#endif
- pic_ref = gen_rtx (PLUS, Pmode,
- pic,
- gen_rtx (CONST, Pmode,
- gen_rtx (MINUS, Pmode,
- XEXP (orig, 0),
- pic_base)));
+ pic_ref = gen_rtx_PLUS (Pmode,
+ pic,
+ gen_rtx_CONST (Pmode,
+ gen_rtx_MINUS (Pmode,
+ XEXP (orig, 0),
+ pic_base)));
}
#if !defined (TARGET_TOC)
emit_move_insn (reg, pic_ref);
- pic_ref = gen_rtx (MEM, GET_MODE (orig), reg);
+ pic_ref = gen_rtx_MEM (GET_MODE (orig), reg);
#endif
RTX_UNCHANGING_P (pic_ref) = 1;
}
if (GET_CODE (orig) == SYMBOL_REF
|| GET_CODE (orig) == LABEL_REF)
{
- rtx offset = gen_rtx (CONST, Pmode,
- gen_rtx (MINUS, Pmode, orig, pic_base));
+ rtx offset = gen_rtx_CONST (Pmode,
+ gen_rtx_MINUS (Pmode,
+ orig, pic_base));
#if defined (TARGET_TOC) /* i.e., PowerPC */
rtx hi_sum_reg;
hi_sum_reg = reg;
- emit_insn (gen_rtx (SET, Pmode, hi_sum_reg,
- (MACHO_DYNAMIC_NO_PIC_P)
- ? gen_rtx (HIGH, Pmode, offset)
- : gen_rtx (PLUS, Pmode,
- pic_offset_table_rtx,
- gen_rtx (HIGH, Pmode, offset))));
- emit_insn (gen_rtx (SET, VOIDmode, reg,
- gen_rtx (LO_SUM, Pmode,
- hi_sum_reg, offset)));
+ emit_insn (gen_rtx_SET (Pmode, hi_sum_reg,
+ (MACHO_DYNAMIC_NO_PIC_P)
+ ? gen_rtx_HIGH (Pmode, offset)
+ : gen_rtx_PLUS (Pmode,
+ pic_offset_table_rtx,
+ gen_rtx_HIGH (Pmode,
+ offset))));
+ emit_insn (gen_rtx_SET (VOIDmode, reg,
+ 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)));
- emit_insn (gen_rtx (SET, VOIDmode, reg,
- gen_rtx (LO_SUM, Pmode, reg, offset)));
- pic_ref = gen_rtx (PLUS, Pmode,
- pic_offset_table_rtx, reg);
+ emit_insn (gen_rtx_SET (VOIDmode, reg,
+ gen_rtx_HIGH (Pmode, offset)));
+ emit_insn (gen_rtx_SET (VOIDmode, reg,
+ 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
}
pic = reg;
}
#if 0
- emit_insn (gen_rtx (USE, VOIDmode,
- pic_offset_table_rtx));
+ emit_insn (gen_rtx_USE (VOIDmode,
+ pic_offset_table_rtx));
#endif
- pic_ref = gen_rtx (PLUS, Pmode,
- pic,
- gen_rtx (CONST, Pmode,
- gen_rtx (MINUS, Pmode,
- orig, pic_base)));
+ pic_ref = gen_rtx_PLUS (Pmode,
+ pic,
+ gen_rtx_CONST (Pmode,
+ gen_rtx_MINUS (Pmode,
+ orig, pic_base)));
}
}
}
is_complex = 1;
}
else
- pic_ref = gen_rtx (PLUS, Pmode, base, orig);
+ pic_ref = gen_rtx_PLUS (Pmode, base, orig);
if (RTX_UNCHANGING_P (base) && RTX_UNCHANGING_P (orig))
RTX_UNCHANGING_P (pic_ref) = 1;
{
rtx addr = machopic_legitimize_pic_address (XEXP (orig, 0), Pmode, reg);
- addr = gen_rtx (MEM, GET_MODE (orig), addr);
+ addr = gen_rtx_MEM (GET_MODE (orig), addr);
RTX_UNCHANGING_P (addr) = RTX_UNCHANGING_P (orig);
emit_move_insn (reg, addr);
pic_ref = reg;
if (! TREE_USED (temp))
continue;
- /* 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);
data_section ();
assemble_align (GET_MODE_ALIGNMENT (Pmode));
assemble_label (lazy_name);
- assemble_integer (gen_rtx (SYMBOL_REF, Pmode, sym_name),
+ assemble_integer (gen_rtx_SYMBOL_REF (Pmode, sym_name),
GET_MODE_SIZE (Pmode),
GET_MODE_ALIGNMENT (Pmode), 1);
}
if ((TREE_CODE (decl) == FUNCTION_DECL
|| TREE_CODE (decl) == VAR_DECL)
&& !DECL_EXTERNAL (decl)
+ && (!TREE_PUBLIC (decl) || (!DECL_ONE_ONLY (decl) && !DECL_WEAK (decl)))
&& ((TREE_STATIC (decl)
&& (!DECL_COMMON (decl) || !TREE_PUBLIC (decl)))
- || (DECL_INITIAL (decl)
+ || (!DECL_COMMON (decl) && DECL_INITIAL (decl)
&& DECL_INITIAL (decl) != error_mark_node)))
defined = 1;
}
}
-/* 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 *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. */
}
void
+darwin_make_decl_one_only (tree decl)
+{
+ static const char *text_section = "__TEXT,__textcoal_nt,coalesced,no_toc";
+ static const char *data_section = "__DATA,__datacoal_nt,coalesced,no_toc";
+
+ const char *sec = TREE_CODE (decl) == FUNCTION_DECL
+ ? text_section
+ : data_section;
+ TREE_PUBLIC (decl) = 1;
+ DECL_ONE_ONLY (decl) = 1;
+ DECL_SECTION_NAME (decl) = build_string (strlen (sec), sec);
+}
+
+void
machopic_select_section (tree exp, int reloc,
unsigned HOST_WIDE_INT align ATTRIBUTE_UNUSED)
{
if (TREE_CODE (exp) == STRING_CST
&& ((size_t) TREE_STRING_LENGTH (exp)
- == strlen (TREE_STRING_POINTER (exp)) + 1)
- && ! flag_writable_strings)
+ == strlen (TREE_STRING_POINTER (exp)) + 1))
cstring_section ();
else if ((TREE_CODE (exp) == INTEGER_CST || TREE_CODE (exp) == REAL_CST)
&& flag_merge_constants)
void
machopic_asm_out_constructor (rtx symbol, int priority ATTRIBUTE_UNUSED)
{
-
if (MACHOPIC_INDIRECT)
mod_init_section ();
else
assemble_align (POINTER_SIZE);
assemble_integer (symbol, POINTER_SIZE / BITS_PER_UNIT, POINTER_SIZE, 1);
-
if (! MACHOPIC_INDIRECT)
fprintf (asm_out_file, ".reference .constructors_used\n");
}
void
machopic_asm_out_destructor (rtx symbol, int priority ATTRIBUTE_UNUSED)
{
-
if (MACHOPIC_INDIRECT)
mod_term_section ();
else
default_globalize_label (stream, name);
}
+void
+darwin_asm_named_section (const char *name, unsigned int flags ATTRIBUTE_UNUSED)
+{
+ if (flag_reorder_blocks_and_partition)
+ fprintf (asm_out_file, SECTION_FORMAT_STRING, name);
+ else
+ fprintf (asm_out_file, ".section %s\n", name);
+}
+
+unsigned int
+darwin_section_type_flags (tree decl, const char *name, int reloc)
+{
+ unsigned int flags = default_section_type_flags (decl, name, reloc);
+
+ /* Weak or linkonce variables live in a writable section. */
+ if (decl != 0 && TREE_CODE (decl) != FUNCTION_DECL
+ && (DECL_WEAK (decl) || DECL_ONE_ONLY (decl)))
+ flags |= SECTION_WRITE;
+
+ return flags;
+}
+
+void
+darwin_unique_section (tree decl, int reloc ATTRIBUTE_UNUSED)
+{
+ /* Darwin does not use unique sections. However, the target's
+ unique_section hook is called for linkonce symbols. We need
+ to set an appropriate section for such symbols. */
+ if (DECL_ONE_ONLY (decl) && !DECL_SECTION_NAME (decl))
+ darwin_make_decl_one_only (decl);
+}
+
+/* Emit a label for an FDE, making it global and/or weak if appropriate.
+ The third parameter is nonzero if this is just a placeholder for an
+ FDE that we are omitting. */
+void
+darwin_emit_unwind_label(FILE *file, tree decl, int empty)
+{
+ tree id = DECL_ASSEMBLER_NAME (decl)
+ ? DECL_ASSEMBLER_NAME (decl)
+ : DECL_NAME (decl);
+
+ const char *prefix = "_";
+ const int prefix_len = 1;
+
+ const char *base = IDENTIFIER_POINTER (id);
+ unsigned int base_len = IDENTIFIER_LENGTH (id);
+
+ const char *suffix = ".eh";
+ unsigned int suffix_len = 3;
+
+ int need_quotes = name_needs_quotes (base);
+ int quotes_len = need_quotes ? 2 : 0;
+
+ char *lab = xmalloc (prefix_len + base_len + suffix_len + quotes_len + 1);
+ lab[0] = '\0';
+
+ if (need_quotes)
+ strcat(lab, "\"");
+ strcat(lab, prefix);
+ strcat(lab, base);
+ strcat(lab, suffix);
+ if (need_quotes)
+ strcat(lab, "\"");
+
+ if (TREE_PUBLIC (decl))
+ fprintf (file, "%s %s\n",
+ (DECL_VISIBILITY (decl) != VISIBILITY_HIDDEN
+ ? ".globl"
+ : ".private_extern"),
+ lab);
+
+ if (DECL_ONE_ONLY (decl) && TREE_PUBLIC (decl))
+ fprintf (file, ".weak_definition %s\n", lab);
+
+ if (empty)
+ fprintf (file, "%s = 0\n", lab);
+ else
+ fprintf (file, "%s:\n", lab);
+
+ free (lab);
+}
+
+/* Generate a PC-relative reference to a Mach-O non-lazy-symbol. */
+void
+darwin_non_lazy_pcrel (FILE *file, rtx addr)
+{
+ const char *str;
+ const char *nlp_name;
+
+ if (GET_CODE (addr) != SYMBOL_REF)
+ abort ();
+
+ str = darwin_strip_name_encoding (XSTR (addr, 0));
+ nlp_name = machopic_non_lazy_ptr_name (str);
+ fputs ("\t.long\t", file);
+ ASM_OUTPUT_LABELREF (file, nlp_name);
+ fputs ("-.", file);
+}
+
+/* Emit an assembler directive to set visibility for a symbol. The
+ only supported visibilities are VISIBILITY_DEFAULT and
+ VISIBILITY_HIDDEN; the latter corresponds to Darwin's "private
+ extern". There is no MACH-O equivalent of ELF's
+ VISIBILITY_INTERNAL or VISIBILITY_PROTECTED. */
+
+void
+darwin_assemble_visibility (tree decl, int vis)
+{
+ if (vis == VISIBILITY_DEFAULT)
+ ;
+ else if (vis == VISIBILITY_HIDDEN)
+ {
+ fputs ("\t.private_extern ", asm_out_file);
+ assemble_name (asm_out_file,
+ (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))));
+ fputs ("\n", asm_out_file);
+ }
+ else
+ warning ("internal and protected visibility attributes not supported"
+ "in this configuration; ignored");
+}
+
/* 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
darwin_asm_output_dwarf_delta (FILE *file, int size ATTRIBUTE_UNUSED,
const char *lab1, const char *lab2)
{
- const char *p = lab1 + (lab1[0] == '*');
- int islocaldiff = (p[0] == 'L');
+ int islocaldiff = (lab1[0] == '*' && lab1[1] == 'L'
+ && lab2[0] == '*' && lab2[1] == 'L');
if (islocaldiff)
fprintf (file, "\t.set L$set$%d,", darwin_dwarf_label_counter);
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