bring back PIC support

[r27057]

diff --git a/ir/be/begnuas.c b/ir/be/begnuas.c
index b4bffed..097d693 100644 (file)
--- a/ir/be/begnuas.c
+++ b/ir/be/begnuas.c
@@ -1186,6 +1186,25 @@ static void emit_common(const ir_entity *ent)
        panic("invalid object file format");
 }
 
+static void dump_indirect_symbol(const ir_entity *entity, be_gas_section_t section)
+{
+       /* we can only do PIC code on macho so far */
+       assert(be_gas_object_file_format == OBJECT_FILE_FORMAT_MACH_O);
+
+       be_emit_cstring("\t.indirect_symbol ");
+       be_emit_ident(get_entity_ident(entity));
+       be_emit_char('\n');
+       be_emit_write_line();
+       if (section == GAS_SECTION_PIC_TRAMPOLINES) {
+               be_emit_cstring("\thlt ; hlt ; hlt ; hlt ; hlt\n");
+               be_emit_write_line();
+       } else {
+               assert(section == GAS_SECTION_PIC_SYMBOLS);
+               be_emit_cstring("\t.long 0\n");
+               be_emit_write_line();
+       }
+}
+
 /**
  * Dump a global entity.
  *
@@ -1228,6 +1247,12 @@ static void dump_global(be_gas_decl_env_t *env, const ir_entity *ent)
 
        be_gas_emit_switch_section(section);
 
+       if (section == GAS_SECTION_PIC_TRAMPOLINES
+                       || section == GAS_SECTION_PIC_SYMBOLS) {
+               dump_indirect_symbol(ent, section);
+               return;
+       }
+
        /* alignment */
        if (alignment > 1) {
                emit_align(alignment);