updated cost model from gcc 4.3.0

[libfirm] / ir / be / begnuas.c

diff --git a/ir/be/begnuas.c b/ir/be/begnuas.c
index b79ba28..b78ab81 100644 (file)
--- a/ir/be/begnuas.c
+++ b/ir/be/begnuas.c
@@ -69,7 +69,9 @@ static const char *get_section_name(be_gas_section_t section) {
                        ".section\t.bss",
                        ".section\t.tbss,\"awT\",@nobits",
                        ".section\t.ctors,\"aw\",@progbits",
+                       NULL, /* no cstring section */
                        NULL,
+                       NULL
                },
                { /* GAS_FLAVOUR_MINGW */
                        ".section\t.text",
@@ -79,6 +81,8 @@ static const char *get_section_name(be_gas_section_t section) {
                        ".section\t.tbss,\"awT\",@nobits",
                        ".section\t.ctors,\"aw\",@progbits",
                        NULL,
+                       NULL,
+                       NULL
                },
                { /* GAS_FLAVOUR_YASM */
                        ".section\t.text",
@@ -87,6 +91,8 @@ static const char *get_section_name(be_gas_section_t section) {
                        ".section\t.bss",
                        ".section\t.tbss,\"awT\",@nobits",
                        ".section\t.ctors,\"aw\",@progbits",
+                       NULL,
+                       NULL,
                        NULL
                },
                { /* GAS_FLAVOUR_MACH_O */
@@ -96,7 +102,9 @@ static const char *get_section_name(be_gas_section_t section) {
                        ".data",
                        NULL,             /* TLS is not supported on Mach-O */
                        ".mod_init_func",
-                       ".cstring"
+                       ".cstring",
+                       ".section\t__IMPORT,__jump_table,symbol_stubs,self_modifying_code+pure_instructions,5",
+                       ".section\t__IMPORT,__pointers,non_lazy_symbol_pointers"
                }
        };
 
@@ -1099,6 +1107,10 @@ static void dump_global(be_gas_decl_env_t *env, ir_entity *ent)
        ir_variability    variability    = get_entity_variability(ent);
        ir_visibility     visibility     = get_entity_visibility(ent);
 
+       if (is_Method_type(type) && section != GAS_SECTION_PIC_TRAMPOLINES) {
+               return;
+       }
+
        if (section != (be_gas_section_t) -1) {
                emit_as_common = 0;
        } else if (variability == variability_constant) {
@@ -1113,6 +1125,8 @@ static void dump_global(be_gas_decl_env_t *env, ir_entity *ent)
                section = GAS_SECTION_COMMON;
                if (visibility != visibility_local)
                        emit_as_common = 1;
+       } else {
+               section = GAS_SECTION_DATA;
        }
 
        if(!emit_as_common) {
@@ -1136,7 +1150,8 @@ static void dump_global(be_gas_decl_env_t *env, ir_entity *ent)
                return;
        }
        /* alignment */
-       if (align > 1 && !emit_as_common) {
+       if (align > 1 && !emit_as_common && section != GAS_SECTION_PIC_TRAMPOLINES
+                       && section != GAS_SECTION_PIC_SYMBOLS) {
                emit_align(align);
        }
 
@@ -1162,6 +1177,17 @@ static void dump_global(be_gas_decl_env_t *env, ir_entity *ent)
                                be_emit_write_line();
                                break;
                        }
+               } else if (section == GAS_SECTION_PIC_TRAMPOLINES) {
+                       if (be_gas_flavour == GAS_FLAVOUR_MACH_O) {
+                               be_emit_cstring("\t.indirect_symbol ");
+                               be_emit_ident(get_entity_ident(ent));
+                               be_emit_char('\n');
+                               be_emit_write_line();
+                               be_emit_cstring("\thlt ; hlt ; hlt ; hlt ; hlt\n");
+                               be_emit_write_line();
+                       } else {
+                               panic("PIC trampolines not yet supported in this gas mode");
+                       }
                } else {
                        be_emit_irprintf("\t.space %u\n", get_type_size_bytes(type));
                        be_emit_write_line();
@@ -1253,4 +1279,17 @@ void be_gas_emit_decls(const be_main_env_t *main_env,
        env.section = GAS_SECTION_CTOR;
        be_gas_dump_globals(get_constructors_type(), &env,
                            only_emit_marked_entities);
+       env.section = GAS_SECTION_PIC_SYMBOLS;
+       be_gas_dump_globals(main_env->pic_symbols_type, &env,
+                           only_emit_marked_entities);
+
+       if (get_compound_n_members(main_env->pic_trampolines_type) > 0) {
+               env.section = GAS_SECTION_PIC_TRAMPOLINES;
+               be_gas_dump_globals(main_env->pic_trampolines_type, &env,
+                                   only_emit_marked_entities);
+               if (be_gas_flavour == GAS_FLAVOUR_MACH_O) {
+                       be_emit_cstring("\t.subsections_via_symbols\n");
+                       be_emit_write_line();
+               }
+       }
 }