X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbegnuas.c;h=a3a26086db4324789bec08a3b4a4f45c6a3a9780;hb=bd019d8cd785c1a433c19dee44bf3f9e82397286;hp=6d4d337d646793f7025ed53d547cffacb251e774;hpb=14b4e9b3f48cd53db6c3179283ce8354d5127ce1;p=libfirm diff --git a/ir/be/begnuas.c b/ir/be/begnuas.c index 6d4d337d6..a3a26086d 100644 --- a/ir/be/begnuas.c +++ b/ir/be/begnuas.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved. + * Copyright (C) 1995-2011 University of Karlsruhe. All right reserved. * * This file is part of libFirm. * @@ -22,7 +22,6 @@ * @brief Dumps global variables and constants as gas assembler. * @author Christian Wuerdig, Matthias Braun * @date 04.11.2005 - * @version $Id$ */ #include "config.h" @@ -39,6 +38,7 @@ #include "irprog.h" #include "entity_t.h" #include "error.h" +#include "util.h" #include "be_t.h" #include "beemitter.h" @@ -46,6 +46,7 @@ /** by default, we generate assembler code for the Linux gas */ object_file_format_t be_gas_object_file_format = OBJECT_FILE_FORMAT_ELF; +elf_variant_t be_gas_elf_variant = ELF_VARIANT_NORMAL; bool be_gas_emit_types = true; char be_gas_elf_type_char = '@'; @@ -57,7 +58,7 @@ static be_gas_section_t current_section = (be_gas_section_t) -1; * write it to the disk. This is an artifact from the old C-generating backend * and even there NOT needed. So we might change it in the future. */ -typedef struct _be_gas_decl_env { +typedef struct be_gas_decl_env { be_gas_section_t section; const be_main_env_t *main_env; } be_gas_decl_env_t; @@ -84,6 +85,10 @@ static void emit_section_macho(be_gas_section_t section) case GAS_SECTION_PIC_TRAMPOLINES: name = "section\t__IMPORT,__jump_table,symbol_stubs,self_modifying_code+pure_instructions,5"; break; case GAS_SECTION_PIC_SYMBOLS: name = "section\t__IMPORT,__pointers,non_lazy_symbol_pointers"; break; case GAS_SECTION_CSTRING: name = "cstring"; break; + case GAS_SECTION_DEBUG_INFO: name = "section __DWARF,__debug_info,regular,debug"; break; + case GAS_SECTION_DEBUG_ABBREV: name = "section __DWARF,__debug_abbrev,regular,debug"; break; + case GAS_SECTION_DEBUG_LINE: name = "section __DWARF,__debug_line,regular,debug"; break; + case GAS_SECTION_DEBUG_PUBNAMES: name = "section __DWARF,__debug_pubnames,regular,debug"; break; default: panic("unsupported scetion type 0x%X", section); } be_emit_irprintf("\t.%s\n", name); @@ -102,20 +107,98 @@ static void emit_section_macho(be_gas_section_t section) } } -static void emit_section(be_gas_section_t section, const ir_entity *entity) +static void emit_section_sparc(be_gas_section_t section, const ir_entity *entity) { be_gas_section_t base = section & GAS_SECTION_TYPE_MASK; be_gas_section_t flags = section & ~GAS_SECTION_TYPE_MASK; - static const char *const basename[] = { - "text", "data", "rodata", "bss", "ctors", "dtors" + static const char *const basename[GAS_SECTION_LAST+1] = { + "text", + "data", + "rodata", + "bss", + "ctors", + "dtors", + NULL, /* cstring */ + NULL, /* pic trampolines */ + NULL, /* pic symbols */ + "debug_info", + "debug_abbrev", + "debug_line", + "debug_pubnames" }; - static const char *const type[] = { - "progbits", "progbits", "progbits", "nobits", "init_array", "fini_array" + + if (current_section == section && !(section & GAS_SECTION_FLAG_COMDAT)) + return; + current_section = section; + + be_emit_cstring("\t.section\t\"."); + + /* Part1: section-name */ + if (flags & GAS_SECTION_FLAG_TLS) + be_emit_char('t'); + assert(base < (be_gas_section_t)ARRAY_SIZE(basename)); + be_emit_string(basename[base]); + + if (flags & GAS_SECTION_FLAG_COMDAT) { + be_emit_char('.'); + be_gas_emit_entity(entity); + } + be_emit_char('"'); + + /* for the simple sections we're done here */ + if (flags == 0) + goto end; + + be_emit_cstring(",#alloc"); + + switch (base) { + case GAS_SECTION_TEXT: be_emit_cstring(",#execinstr"); break; + case GAS_SECTION_DATA: + case GAS_SECTION_BSS: be_emit_cstring(",#write"); break; + default: + /* nothing */ + break; + } + if (flags & GAS_SECTION_FLAG_TLS) { + be_emit_cstring(",#tls"); + } + +end: + be_emit_char('\n'); + be_emit_write_line(); +} + +static void emit_section(be_gas_section_t section, const ir_entity *entity) +{ + be_gas_section_t base = section & GAS_SECTION_TYPE_MASK; + be_gas_section_t flags = section & ~GAS_SECTION_TYPE_MASK; + const char *f; + static const struct { + const char *name; + const char *type; + const char *flags; + } sectioninfos[GAS_SECTION_LAST+1] = { + { "text", "progbits", "ax" }, + { "data", "progbits", "aw" }, + { "rodata", "progbits", "a" }, + { "bss", "nobits", "aw" }, + { "ctors", "progbits", "aw" }, + { "dtors", "progbits", "aw" }, + { NULL, NULL, NULL }, /* cstring */ + { NULL, NULL, NULL }, /* pic trampolines */ + { NULL, NULL, NULL }, /* pic symbols */ + { "debug_info", "progbits", "" }, + { "debug_abbrev", "progbits", "" }, + { "debug_line", "progbits", "" }, + { "debug_pubnames", "progbits", "" }, }; if (be_gas_object_file_format == OBJECT_FILE_FORMAT_MACH_O) { emit_section_macho(section); return; + } else if(be_gas_elf_variant == ELF_VARIANT_SPARC) { + emit_section_sparc(section, entity); + return; } if (current_section == section && !(section & GAS_SECTION_FLAG_COMDAT)) @@ -146,12 +229,12 @@ static void emit_section(be_gas_section_t section, const ir_entity *entity) } } - assert(base < sizeof(basename)/sizeof(basename[0])); + assert(base < (be_gas_section_t) ARRAY_SIZE(sectioninfos)); be_emit_cstring("\t.section\t."); /* section name */ if (flags & GAS_SECTION_FLAG_TLS) be_emit_char('t'); - be_emit_string(basename[base]); + be_emit_string(sectioninfos[base].name); if (flags & GAS_SECTION_FLAG_COMDAT) { be_emit_char('.'); be_gas_emit_entity(entity); @@ -159,17 +242,20 @@ static void emit_section(be_gas_section_t section, const ir_entity *entity) /* section flags */ be_emit_cstring(",\""); - if (be_gas_object_file_format != OBJECT_FILE_FORMAT_COFF) - be_emit_char('a'); - if (base != GAS_SECTION_RODATA) - be_emit_char('w'); + for (f = sectioninfos[base].flags; *f != '\0'; ++f) { + be_emit_char(*f); + } if (flags & GAS_SECTION_FLAG_TLS) be_emit_char('T'); if (flags & GAS_SECTION_FLAG_COMDAT) be_emit_char('G'); - be_emit_cstring("\","); - be_emit_char(be_gas_elf_type_char); - be_emit_string(type[base]); + + /* section type */ + if (be_gas_object_file_format != OBJECT_FILE_FORMAT_COFF) { + be_emit_cstring("\","); + be_emit_char(be_gas_elf_type_char); + be_emit_string(sectioninfos[base].type); + } if (flags & GAS_SECTION_FLAG_COMDAT) { be_emit_char(','); @@ -180,6 +266,8 @@ static void emit_section(be_gas_section_t section, const ir_entity *entity) be_emit_write_line(); } + + void be_gas_emit_switch_section(be_gas_section_t section) { /* you have to produce a switch_section call with entity manually @@ -189,7 +277,7 @@ void be_gas_emit_switch_section(be_gas_section_t section) emit_section(section, NULL); } -static tarval *get_initializer_tarval(const ir_initializer_t *initializer) +static ir_tarval *get_initializer_tarval(const ir_initializer_t *initializer) { if (initializer->kind == IR_INITIALIZER_TARVAL) return initializer->tarval.value; @@ -202,40 +290,40 @@ static tarval *get_initializer_tarval(const ir_initializer_t *initializer) return get_tarval_undefined(); } -static int initializer_is_string_const(const ir_initializer_t *initializer) +static bool initializer_is_string_const(const ir_initializer_t *initializer) { size_t i, len; - int found_printable = 0; + bool found_printable = false; if (initializer->kind != IR_INITIALIZER_COMPOUND) - return 0; + return false; len = initializer->compound.n_initializers; if (len < 1) - return 0; + return false; for (i = 0; i < len; ++i) { int c; - tarval *tv; + ir_tarval *tv; ir_mode *mode; ir_initializer_t *sub_initializer = initializer->compound.initializers[i]; tv = get_initializer_tarval(sub_initializer); if (!tarval_is_constant(tv)) - return 0; + return false; mode = get_tarval_mode(tv); if (!mode_is_int(mode) || get_mode_size_bits(mode) != 8) - return 0; + return false; c = get_tarval_long(tv); if (isgraph(c) || isspace(c)) - found_printable = 1; + found_printable = true; else if (c != 0) - return 0; + return false; if (i == len - 1 && c != '\0') - return 0; + return false; } return found_printable; @@ -247,7 +335,7 @@ static bool initializer_is_null(const ir_initializer_t *initializer) case IR_INITIALIZER_NULL: return true; case IR_INITIALIZER_TARVAL: { - tarval *tv = initializer->tarval.value; + ir_tarval *tv = initializer->tarval.value; return tarval_is_null(tv); } case IR_INITIALIZER_CONST: { @@ -333,6 +421,7 @@ static bool entity_is_null(const ir_entity *entity) } else if (entity_has_compound_ent_values(entity)) { /* I'm too lazy to implement this case as compound graph paths will be * remove anyway in the future */ + return false; } /* uninitialized, NULL is fine */ return true; @@ -393,6 +482,11 @@ static be_gas_section_t determine_section(be_gas_decl_env_t *env, return section | GAS_SECTION_FLAG_TLS; } + /* the java frontend keeps some functions inside classes */ + if (is_Class_type(owner)) { + return determine_basic_section(entity); + } + panic("Couldn't determine section for %+F?!?", entity); } @@ -423,7 +517,8 @@ static void emit_visibility(const ir_entity *entity) } if (be_gas_object_file_format == OBJECT_FILE_FORMAT_MACH_O - && (linkage & IR_LINKAGE_HIDDEN_USER)) { + && (linkage & IR_LINKAGE_HIDDEN_USER) + && get_entity_ld_name(entity)[0] != '\0') { be_emit_cstring("\t.no_dead_strip "); be_gas_emit_entity(entity); be_emit_char('\n'); @@ -433,7 +528,11 @@ static void emit_visibility(const ir_entity *entity) void be_gas_emit_function_prolog(const ir_entity *entity, unsigned po2alignment) { - be_gas_section_t section = determine_section(NULL, entity); + be_gas_section_t section; + + be_dbg_method_begin(entity); + + section = determine_section(NULL, entity); emit_section(section, entity); /* write the begin line (makes the life easier for scripts parsing the @@ -501,9 +600,12 @@ void be_gas_emit_function_epilog(const ir_entity *entity) be_gas_emit_entity(entity); be_emit_char('\n'); be_emit_write_line(); -} -/************************************************************************/ + be_dbg_method_end(); + + be_emit_char('\n'); + be_emit_write_line(); +} /** * Output a tarval. @@ -511,7 +613,7 @@ void be_gas_emit_function_epilog(const ir_entity *entity) * @param tv the tarval * @param bytes the width of the tarvals value in bytes */ -static void emit_arith_tarval(tarval *tv, int bytes) +static void emit_arith_tarval(ir_tarval *tv, unsigned bytes) { switch (bytes) { case 1: @@ -519,53 +621,22 @@ static void emit_arith_tarval(tarval *tv, int bytes) return; case 2: - be_emit_irprintf("0x%02x%02x", get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0)); + be_emit_irprintf("0x%02x%02x", + get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0)); return; case 4: be_emit_irprintf("0x%02x%02x%02x%02x", - get_tarval_sub_bits(tv, 3), get_tarval_sub_bits(tv, 2), get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0)); + get_tarval_sub_bits(tv, 3), get_tarval_sub_bits(tv, 2), + get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0)); return; case 8: be_emit_irprintf("0x%02x%02x%02x%02x%02x%02x%02x%02x", - get_tarval_sub_bits(tv, 7), get_tarval_sub_bits(tv, 6), get_tarval_sub_bits(tv, 5), get_tarval_sub_bits(tv, 4), - get_tarval_sub_bits(tv, 3), get_tarval_sub_bits(tv, 2), get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0)); - return; - - case 12: - /* Beware: Mixed endian output! One little endian number emitted as - * three longs. Each long initializer is written in big endian. */ - be_emit_irprintf( - "\t.long\t0x%02x%02x%02x%02x\n" - "\t.long\t0x%02x%02x%02x%02x\n" - "\t.long\t0x%02x%02x%02x%02x", - get_tarval_sub_bits(tv, 3), get_tarval_sub_bits(tv, 2), - get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0), - get_tarval_sub_bits(tv, 7), get_tarval_sub_bits(tv, 6), - get_tarval_sub_bits(tv, 5), get_tarval_sub_bits(tv, 4), - get_tarval_sub_bits(tv, 11), get_tarval_sub_bits(tv, 10), - get_tarval_sub_bits(tv, 9), get_tarval_sub_bits(tv, 8) - ); - return; - - case 16: - /* Beware: Mixed endian output! One little endian number emitted as - * three longs. Each long initializer is written in big endian. */ - be_emit_irprintf( - "\t.long\t0x%02x%02x%02x%02x\n" - "\t.long\t0x%02x%02x%02x%02x\n" - "\t.long\t0x%02x%02x%02x%02x\n" - "\t.long\t0x%02x%02x%02x%02x", - get_tarval_sub_bits(tv, 3), get_tarval_sub_bits(tv, 2), - get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0), - get_tarval_sub_bits(tv, 7), get_tarval_sub_bits(tv, 6), - get_tarval_sub_bits(tv, 5), get_tarval_sub_bits(tv, 4), - get_tarval_sub_bits(tv, 11), get_tarval_sub_bits(tv, 10), - get_tarval_sub_bits(tv, 9), get_tarval_sub_bits(tv, 8), - get_tarval_sub_bits(tv, 15), get_tarval_sub_bits(tv, 14), - get_tarval_sub_bits(tv, 13), get_tarval_sub_bits(tv, 12) - ); + get_tarval_sub_bits(tv, 7), get_tarval_sub_bits(tv, 6), + get_tarval_sub_bits(tv, 5), get_tarval_sub_bits(tv, 4), + get_tarval_sub_bits(tv, 3), get_tarval_sub_bits(tv, 2), + get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0)); return; } @@ -587,7 +658,7 @@ const char *be_gas_insn_label_prefix(void) * * @return the tarval */ -static tarval *get_atomic_init_tv(ir_node *init) +static ir_tarval *get_atomic_init_tv(ir_node *init) { for (;;) { ir_mode *mode = get_irn_mode(init); @@ -635,37 +706,33 @@ static tarval *get_atomic_init_tv(ir_node *init) * @param env the gas output environment * @param init a node representing the atomic value (on the const code irg) */ -static void do_emit_atomic_init(be_gas_decl_env_t *env, ir_node *init) +static void emit_init_expression(be_gas_decl_env_t *env, ir_node *init) { ir_mode *mode = get_irn_mode(init); int bytes = get_mode_size_bytes(mode); - tarval *tv; + ir_tarval *tv; ir_entity *ent; init = skip_Id(init); switch (get_irn_opcode(init)) { case iro_Cast: - do_emit_atomic_init(env, get_Cast_op(init)); + emit_init_expression(env, get_Cast_op(init)); return; case iro_Conv: - do_emit_atomic_init(env, get_Conv_op(init)); + emit_init_expression(env, get_Conv_op(init)); return; case iro_Const: tv = get_Const_tarval(init); - /* it's a arithmetic value */ + /* it's an arithmetic value */ emit_arith_tarval(tv, bytes); return; case iro_SymConst: switch (get_SymConst_kind(init)) { - case symconst_addr_name: - be_emit_ident(get_SymConst_name(init)); - break; - case symconst_addr_ent: ent = get_SymConst_entity(init); be_gas_emit_entity(ent); @@ -698,27 +765,27 @@ static void do_emit_atomic_init(be_gas_decl_env_t *env, ir_node *init) if (!mode_is_int(mode) && !mode_is_reference(mode)) { panic("Constant must be int or pointer for '+' to work"); } - do_emit_atomic_init(env, get_Add_left(init)); + emit_init_expression(env, get_Add_left(init)); be_emit_cstring(" + "); - do_emit_atomic_init(env, get_Add_right(init)); + emit_init_expression(env, get_Add_right(init)); return; case iro_Sub: if (!mode_is_int(mode) && !mode_is_reference(mode)) { panic("Constant must be int or pointer for '-' to work"); } - do_emit_atomic_init(env, get_Sub_left(init)); + emit_init_expression(env, get_Sub_left(init)); be_emit_cstring(" - "); - do_emit_atomic_init(env, get_Sub_right(init)); + emit_init_expression(env, get_Sub_right(init)); return; case iro_Mul: if (!mode_is_int(mode) && !mode_is_reference(mode)) { panic("Constant must be int or pointer for '*' to work"); } - do_emit_atomic_init(env, get_Mul_left(init)); + emit_init_expression(env, get_Mul_left(init)); be_emit_cstring(" * "); - do_emit_atomic_init(env, get_Mul_right(init)); + emit_init_expression(env, get_Mul_right(init)); return; case iro_Unknown: @@ -738,54 +805,16 @@ static void do_emit_atomic_init(be_gas_decl_env_t *env, ir_node *init) static void emit_size_type(size_t size) { switch (size) { - case 1: - be_emit_cstring("\t.byte\t"); - break; - - case 2: - be_emit_cstring("\t.short\t"); - break; - - case 4: - be_emit_cstring("\t.long\t"); - break; - - case 8: - be_emit_cstring("\t.quad\t"); - break; - - case 10: - case 12: - case 16: /* Note: .octa does not work on mac */ - /* handled in arith */ - break; + case 1: be_emit_cstring("\t.byte\t"); break; + case 2: be_emit_cstring("\t.short\t"); break; + case 4: be_emit_cstring("\t.long\t"); break; + case 8: be_emit_cstring("\t.quad\t"); break; default: panic("Try to dump a type with %u bytes", (unsigned)size); } } -/** - * Emit an atomic value. - * - * @param env the gas output environment - * @param init a node representing the atomic value (on the const code irg) - */ -static void emit_atomic_init(be_gas_decl_env_t *env, ir_node *init) -{ - ir_mode *mode = get_irn_mode(init); - int bytes = get_mode_size_bytes(mode); - - emit_size_type(bytes); - do_emit_atomic_init(env, init); - be_emit_char('\n'); - be_emit_write_line(); -} - -/************************************************************************/ -/* Routines to dump global variables */ -/************************************************************************/ - /** * Dump a string constant. * No checks are made!! @@ -826,7 +855,7 @@ static void emit_string_cst(const ir_entity *ent) if (isprint(c)) be_emit_char(c); else - be_emit_irprintf("\\%o", c); + be_emit_irprintf("\\%03o", c); break; } } @@ -838,11 +867,11 @@ static void emit_string_cst(const ir_entity *ent) remaining_space = type_size - len; assert(remaining_space >= 0); if (remaining_space > 0) { - be_emit_irprintf("\t.space\t%d\n", remaining_space); + be_emit_irprintf("\t.space\t%d, 0\n", remaining_space); } } -static void emit_string_initializer(const ir_initializer_t *initializer) +static size_t emit_string_initializer(const ir_initializer_t *initializer) { size_t i, len; @@ -858,8 +887,8 @@ static void emit_string_initializer(const ir_initializer_t *initializer) const ir_initializer_t *sub_initializer = get_initializer_compound_value(initializer, i); - tarval *tv = get_initializer_tarval(sub_initializer); - int c = get_tarval_long(tv); + ir_tarval *tv = get_initializer_tarval(sub_initializer); + int c = get_tarval_long(tv); switch (c) { case '"' : be_emit_cstring("\\\""); break; @@ -871,26 +900,31 @@ static void emit_string_initializer(const ir_initializer_t *initializer) if (isprint(c)) be_emit_char(c); else - be_emit_irprintf("\\%o", c); + be_emit_irprintf("\\%03o", c); break; } } be_emit_cstring("\"\n"); be_emit_write_line(); + + return initializer->compound.n_initializers; } -enum normal_or_bitfield_kind { +typedef enum normal_or_bitfield_kind { NORMAL = 0, TARVAL, + STRING, BITFIELD -}; +} normal_or_bitfield_kind; typedef struct { - enum normal_or_bitfield_kind kind; + normal_or_bitfield_kind kind; + ir_type *type; union { - ir_node *value; - tarval *tarval; - unsigned char bf_val; + ir_node *value; + ir_tarval *tarval; + unsigned char bf_val; + const ir_initializer_t *string; } v; } normal_or_bitfield; @@ -915,9 +949,9 @@ static size_t get_initializer_size(const ir_initializer_t *initializer, if (!is_type_variable_size(type)) { return get_type_size_bytes(type); } else { - unsigned n_entries + size_t n_entries = get_initializer_compound_n_entries(initializer); - unsigned i; + size_t i; unsigned initializer_size = get_type_size_bytes(type); for (i = 0; i < n_entries; ++i) { ir_entity *entity = get_compound_member(type, i); @@ -948,12 +982,13 @@ static size_t max_vals; static void emit_bitfield(normal_or_bitfield *vals, size_t offset_bits, const ir_initializer_t *initializer, ir_type *type) { - unsigned char last_bits = 0; - ir_mode *mode = get_type_mode(type); - tarval *tv = NULL; - unsigned char curr_bits; - int value_len; - int j; + static const size_t BITS_PER_BYTE = 8; + ir_mode *mode = get_type_mode(type); + ir_tarval *tv = NULL; + int value_len; + size_t bit_offset; + size_t end; + bool big_endian = be_get_backend_param()->byte_order_big_endian; switch (get_initializer_kind(initializer)) { case IR_INITIALIZER_NULL: @@ -977,22 +1012,41 @@ static void emit_bitfield(normal_or_bitfield *vals, size_t offset_bits, } tv = tarval_convert_to(tv, get_type_mode(type)); - /* normalize offset */ - vals += offset_bits >> 3; - offset_bits &= 7; - value_len = get_mode_size_bits(mode); - - /* combine bits with existing bits */ - for (j = 0; value_len + (int) offset_bits > 0; ++j) { - assert((size_t) (vals - glob_vals) + j < max_vals); - assert(vals[j].kind == BITFIELD || - (vals[j].kind == NORMAL && vals[j].v.value == NULL)); - vals[j].kind = BITFIELD; - curr_bits = get_tarval_sub_bits(tv, j); - vals[j].v.bf_val - |= (last_bits >> (8 - offset_bits)) | (curr_bits << offset_bits); - value_len -= 8; - last_bits = curr_bits; + value_len = get_type_size_bytes(get_primitive_base_type(type)); + bit_offset = 0; + end = get_mode_size_bits(mode); + while (bit_offset < end) { + size_t src_offset = bit_offset / BITS_PER_BYTE; + size_t src_offset_bits = bit_offset % BITS_PER_BYTE; + size_t dst_offset = (bit_offset+offset_bits) / BITS_PER_BYTE; + size_t dst_offset_bits = (bit_offset+offset_bits) % BITS_PER_BYTE; + size_t src_bits_len = end-bit_offset; + size_t dst_bits_len = BITS_PER_BYTE-dst_offset_bits; + unsigned char curr_bits; + normal_or_bitfield *val; + if (src_bits_len > dst_bits_len) + src_bits_len = dst_bits_len; + + if (big_endian) { + val = &vals[value_len - dst_offset - 1]; + } else { + val = &vals[dst_offset]; + } + + assert((val-glob_vals) < (ptrdiff_t) max_vals); + assert(val->kind == BITFIELD || + (val->kind == NORMAL && val->v.value == NULL)); + val->kind = BITFIELD; + curr_bits = get_tarval_sub_bits(tv, src_offset); + curr_bits = curr_bits >> src_offset_bits; + if (src_offset_bits + src_bits_len > 8) { + unsigned next_bits = get_tarval_sub_bits(tv, src_offset+1); + curr_bits |= next_bits << (8 - src_offset_bits); + } + curr_bits &= (1 << src_bits_len) - 1; + val->v.bf_val |= curr_bits << dst_offset_bits; + + bit_offset += dst_bits_len; } } @@ -1002,6 +1056,13 @@ static void emit_ir_initializer(normal_or_bitfield *vals, { assert((size_t) (vals - glob_vals) < max_vals); + if (initializer_is_string_const(initializer)) { + assert(vals->kind != BITFIELD); + vals->kind = STRING; + vals->v.string = initializer; + return; + } + switch (get_initializer_kind(initializer)) { case IR_INITIALIZER_NULL: return; @@ -1010,10 +1071,12 @@ static void emit_ir_initializer(normal_or_bitfield *vals, assert(vals->kind != BITFIELD); vals->kind = TARVAL; + vals->type = type; vals->v.tarval = get_initializer_tarval_value(initializer); assert(get_type_mode(type) == get_tarval_mode(vals->v.tarval)); for (i = 1; i < get_type_size_bytes(type); ++i) { vals[i].kind = NORMAL; + vals[i].type = NULL; vals[i].v.value = NULL; } return; @@ -1023,9 +1086,11 @@ static void emit_ir_initializer(normal_or_bitfield *vals, assert(vals->kind != BITFIELD); vals->kind = NORMAL; + vals->type = type; vals->v.value = get_initializer_const_value(initializer); for (i = 1; i < get_type_size_bytes(type); ++i) { vals[i].kind = NORMAL; + vals[i].type = NULL; vals[i].v.value = NULL; } return; @@ -1069,14 +1134,14 @@ static void emit_ir_initializer(normal_or_bitfield *vals, if (mode != NULL) { size_t offset_bits = get_entity_offset_bits_remainder(member); - size_t value_len = get_mode_size_bits(mode); - if (offset_bits != 0 || - (value_len != 8 && value_len != 16 && value_len != 32 - && value_len != 64)) { + if (is_Primitive_type(subtype) + && get_primitive_base_type(subtype) != NULL) { emit_bitfield(&vals[offset], offset_bits, sub_initializer, subtype); continue; + } else { + assert(offset_bits == 0); } } @@ -1090,6 +1155,97 @@ static void emit_ir_initializer(normal_or_bitfield *vals, panic("invalid ir_initializer kind found"); } +static void emit_tarval_data(ir_type *type, ir_tarval *tv) +{ + size_t size = get_type_size_bytes(type); + if (size == 12) { + /* this should be an x86 extended float */ + assert(be_get_backend_param()->byte_order_big_endian == 0); + + /* Beware: Mixed endian output! One little endian number emitted as + * three longs. Each long initializer is written in big endian. */ + be_emit_irprintf( + "\t.long\t0x%02x%02x%02x%02x\n" + "\t.long\t0x%02x%02x%02x%02x\n" + "\t.long\t0x%02x%02x%02x%02x\n", + get_tarval_sub_bits(tv, 3), get_tarval_sub_bits(tv, 2), + get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0), + get_tarval_sub_bits(tv, 7), get_tarval_sub_bits(tv, 6), + get_tarval_sub_bits(tv, 5), get_tarval_sub_bits(tv, 4), + get_tarval_sub_bits(tv, 11), get_tarval_sub_bits(tv, 10), + get_tarval_sub_bits(tv, 9), get_tarval_sub_bits(tv, 8) + ); + be_emit_write_line(); + } else if (size == 16) { + if (be_get_backend_param()->byte_order_big_endian) { + be_emit_irprintf( + "\t.long\t0x%02x%02x%02x%02x\n" + "\t.long\t0x%02x%02x%02x%02x\n" + "\t.long\t0x%02x%02x%02x%02x\n" + "\t.long\t0x%02x%02x%02x%02x\n", + get_tarval_sub_bits(tv, 15), get_tarval_sub_bits(tv, 14), + get_tarval_sub_bits(tv, 13), get_tarval_sub_bits(tv, 12), + get_tarval_sub_bits(tv, 11), get_tarval_sub_bits(tv, 10), + get_tarval_sub_bits(tv, 9), get_tarval_sub_bits(tv, 8), + get_tarval_sub_bits(tv, 7), get_tarval_sub_bits(tv, 6), + get_tarval_sub_bits(tv, 5), get_tarval_sub_bits(tv, 4), + get_tarval_sub_bits(tv, 3), get_tarval_sub_bits(tv, 2), + get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0) + ); + } else { + /* Beware: Mixed endian output! One little endian number emitted as + * three longs. Each long initializer is written in big endian. */ + be_emit_irprintf( + "\t.long\t0x%02x%02x%02x%02x\n" + "\t.long\t0x%02x%02x%02x%02x\n" + "\t.long\t0x%02x%02x%02x%02x\n" + "\t.long\t0x%02x%02x%02x%02x\n", + get_tarval_sub_bits(tv, 3), get_tarval_sub_bits(tv, 2), + get_tarval_sub_bits(tv, 1), get_tarval_sub_bits(tv, 0), + get_tarval_sub_bits(tv, 7), get_tarval_sub_bits(tv, 6), + get_tarval_sub_bits(tv, 5), get_tarval_sub_bits(tv, 4), + get_tarval_sub_bits(tv, 11), get_tarval_sub_bits(tv, 10), + get_tarval_sub_bits(tv, 9), get_tarval_sub_bits(tv, 8), + get_tarval_sub_bits(tv, 15), get_tarval_sub_bits(tv, 14), + get_tarval_sub_bits(tv, 13), get_tarval_sub_bits(tv, 12) + ); + } + be_emit_write_line(); + return; + } else { + /* default case */ + emit_size_type(size); + emit_arith_tarval(tv, size); + be_emit_char('\n'); + be_emit_write_line(); + } +} + +/** + * Emit an atomic value. + * + * @param env the gas output environment + * @param init a node representing the atomic value (on the const code irg) + */ +static void emit_node_data(be_gas_decl_env_t *env, ir_node *init, ir_type *type) +{ + size_t size = get_type_size_bytes(type); + if (size == 12 || size == 16) { + ir_tarval *tv; + if (!is_Const(init)) { + panic("12/16byte initializers only support Const nodes yet"); + } + tv = get_Const_tarval(init); + emit_tarval_data(type, tv); + return; + } + + emit_size_type(size); + emit_init_expression(env, init); + be_emit_char('\n'); + be_emit_write_line(); +} + static void emit_initializer(be_gas_decl_env_t *env, const ir_entity *entity) { const ir_initializer_t *initializer = entity->initializer; @@ -1124,30 +1280,32 @@ static void emit_initializer(be_gas_decl_env_t *env, const ir_entity *entity) /* now write values sorted */ for (k = 0; k < size; ) { - int space = 0; - int elem_size = 1; - if (vals[k].kind == NORMAL) { + int space = 0; + normal_or_bitfield_kind kind = vals[k].kind; + int elem_size; + switch (kind) { + case NORMAL: if (vals[k].v.value != NULL) { - emit_atomic_init(env, vals[k].v.value); - elem_size = get_mode_size_bytes(get_irn_mode(vals[k].v.value)); - } else { - elem_size = 0; - } - } else if (vals[k].kind == TARVAL) { - tarval *tv = vals[k].v.tarval; - size_t size = get_mode_size_bytes(get_tarval_mode(tv)); - - assert(tv != NULL); - - elem_size = size; - emit_size_type(size); - emit_arith_tarval(tv, size); - be_emit_char('\n'); - be_emit_write_line(); - } else { - assert(vals[k].kind == BITFIELD); + emit_node_data(env, vals[k].v.value, vals[k].type); + elem_size = get_type_size_bytes(vals[k].type); + } else { + elem_size = 0; + } + break; + case TARVAL: + emit_tarval_data(vals[k].type, vals[k].v.tarval); + elem_size = get_type_size_bytes(vals[k].type); + break; + case STRING: + elem_size = emit_string_initializer(vals[k].v.string); + break; + case BITFIELD: be_emit_irprintf("\t.byte\t%d\n", vals[k].v.bf_val); be_emit_write_line(); + elem_size = 1; + break; + default: + panic("internal compiler error (invalid normal_or_bitfield_kind"); } k += elem_size; @@ -1158,7 +1316,7 @@ static void emit_initializer(be_gas_decl_env_t *env, const ir_entity *entity) /* a gap */ if (space > 0) { - be_emit_irprintf("\t.space\t%d\n", space); + be_emit_irprintf("\t.space\t%d, 0\n", space); be_emit_write_line(); } } @@ -1213,7 +1371,7 @@ static void emit_compound_graph_init(be_gas_decl_env_t *env, if (offset_bits != 0 || (value_len != 8 && value_len != 16 && value_len != 32 && value_len != 64)) { - tarval *tv = get_atomic_init_tv(value); + ir_tarval *tv = get_atomic_init_tv(value); unsigned char curr_bits, last_bits = 0; if (tv == NULL) { panic("Couldn't get numeric value for bitfield initializer '%s'", @@ -1249,7 +1407,7 @@ static void emit_compound_graph_init(be_gas_decl_env_t *env, int space = 0, skip = 0; if (vals[k].kind == NORMAL) { if (vals[k].v.value != NULL) { - emit_atomic_init(env, vals[k].v.value); + emit_node_data(env, vals[k].v.value, vals[k].type); skip = get_mode_size_bytes(get_irn_mode(vals[k].v.value)) - 1; } else { space = 1; @@ -1269,7 +1427,7 @@ static void emit_compound_graph_init(be_gas_decl_env_t *env, /* a gap */ if (space > 0) { - be_emit_irprintf("\t.space\t%d\n", space); + be_emit_irprintf("\t.space\t%d, 0\n", space); be_emit_write_line(); } } @@ -1384,9 +1542,7 @@ static void emit_indirect_symbol(const ir_entity *entity, be_gas_section_t secti char const *be_gas_get_private_prefix(void) { - return - be_gas_object_file_format == OBJECT_FILE_FORMAT_MACH_O ? "L" : - ".L"; + return be_gas_object_file_format == OBJECT_FILE_FORMAT_MACH_O ? "L" : ".L"; } void be_gas_emit_entity(const ir_entity *entity) @@ -1405,7 +1561,7 @@ void be_gas_emit_entity(const ir_entity *entity) void be_gas_emit_block_name(const ir_node *block) { - if (has_Block_entity(block)) { + if (get_Block_entity(block) != NULL) { ir_entity *entity = get_Block_entity(block); be_gas_emit_entity(entity); } else { @@ -1446,8 +1602,6 @@ static void emit_global(be_gas_decl_env_t *env, const ir_entity *entity) be_dbg_variable(entity); if (section == GAS_SECTION_BSS) { - ir_visibility visibility = get_entity_visibility(entity); - switch (visibility) { case ir_visibility_local: case ir_visibility_private: @@ -1488,7 +1642,8 @@ static void emit_global(be_gas_decl_env_t *env, const ir_entity *entity) emit_align(alignment); } if (be_gas_object_file_format == OBJECT_FILE_FORMAT_ELF - && be_gas_emit_types) { + && be_gas_emit_types + && visibility != ir_visibility_private) { be_emit_cstring("\t.type\t"); be_gas_emit_entity(entity); be_emit_cstring(", "); @@ -1505,9 +1660,12 @@ static void emit_global(be_gas_decl_env_t *env, const ir_entity *entity) } if (entity_is_null(entity)) { - be_emit_irprintf("\t.space %u\n", get_type_size_bytes(type)); - be_emit_write_line(); - } else if(entity_has_compound_ent_values(entity)) { + unsigned size = get_type_size_bytes(type); + if (size > 0) { + be_emit_irprintf("\t.space %u, 0\n", get_type_size_bytes(type)); + be_emit_write_line(); + } + } else if (entity_has_compound_ent_values(entity)) { emit_compound_graph_init(env, entity); } else { assert(entity->initializer != NULL); @@ -1523,7 +1681,7 @@ static void emit_global(be_gas_decl_env_t *env, const ir_entity *entity) */ static void be_gas_emit_globals(ir_type *gt, be_gas_decl_env_t *env) { - int i, n = get_compound_n_members(gt); + size_t i, n = get_compound_n_members(gt); for (i = 0; i < n; i++) { ir_entity *ent = get_compound_member(gt, i); @@ -1531,10 +1689,8 @@ static void be_gas_emit_globals(ir_type *gt, be_gas_decl_env_t *env) } } -/************************************************************************/ - /* Generate all entities. */ -void be_gas_emit_decls(const be_main_env_t *main_env) +static void emit_global_decls(const be_main_env_t *main_env) { be_gas_decl_env_t env; memset(&env, 0, sizeof(env)); @@ -1562,3 +1718,136 @@ void be_gas_emit_decls(const be_main_env_t *main_env) be_emit_write_line(); } } + +void be_emit_jump_table(const ir_node *node, const ir_switch_table *table, + ir_entity *entity, get_cfop_target_func get_cfop_target) +{ + unsigned n_outs = arch_get_irn_n_outs(node); + const ir_node **targets = XMALLOCNZ(const ir_node*, n_outs); + size_t n_entries = ir_switch_table_get_n_entries(table); + unsigned long length = 0; + size_t e; + const ir_edge_t *edge; + unsigned i; + const ir_node **labels; + + /* go over all proj's and collect their jump targets */ + foreach_out_edge(node, edge) { + ir_node *proj = get_edge_src_irn(edge); + long pn = get_Proj_proj(proj); + ir_node *target = get_cfop_target(proj); + assert(targets[pn] == NULL); + targets[pn] = target; + } + + /* go over table to determine max value (note that we normalized the + * ranges so that the minimum is 0) */ + for (e = 0; e < n_entries; ++e) { + const ir_switch_table_entry *entry + = ir_switch_table_get_entry_const(table, e); + ir_tarval *max = entry->max; + unsigned long val; + if (entry->pn == 0) + continue; + if (!tarval_is_long(max)) + panic("switch case overflow (%+F)", node); + val = (unsigned long) get_tarval_long(max); + if (val > length) { + length = val; + } + } + + /* the 16000 isn't a real limit of the architecture. But should protect us + * from seamingly endless compiler runs */ + if (length > 16000) { + /* switch lowerer should have broken this monster to pieces... */ + panic("too large switch encountered (%+F)", node); + } + ++length; + + labels = XMALLOCNZ(const ir_node*, length); + for (e = 0; e < n_entries; ++e) { + const ir_switch_table_entry *entry + = ir_switch_table_get_entry_const(table, e); + ir_tarval *min = entry->min; + ir_tarval *max = entry->max; + const ir_node *target = targets[entry->pn]; + assert(entry->pn < (long)n_outs); + if (min == max) { + unsigned long val = (unsigned long)get_tarval_long(max); + labels[val] = target; + } else { + unsigned long min_val; + unsigned long max_val; + unsigned long i; + if (!tarval_is_long(min)) + panic("switch case overflow (%+F)", node); + min_val = (unsigned long)get_tarval_long(min); + max_val = (unsigned long)get_tarval_long(max); + assert(min_val <= max_val); + for (i = min_val; i <= max_val; ++i) { + labels[i] = target; + } + } + } + + /* emit table */ + if (entity != NULL) { + be_gas_emit_switch_section(GAS_SECTION_RODATA); + be_emit_cstring("\t.align 4\n"); + be_gas_emit_entity(entity); + be_emit_cstring(":\n"); + } + + for (i = 0; i < length; ++i) { + const ir_node *block = labels[i]; + if (block == NULL) + block = targets[0]; + be_emit_cstring("\t.long "); + be_gas_emit_block_name(block); + be_emit_char('\n'); + be_emit_write_line(); + } + + if (entity != NULL) + be_gas_emit_switch_section(GAS_SECTION_TEXT); + + xfree(labels); + xfree(targets); +} + +static void emit_global_asms(void) +{ + size_t n = get_irp_n_asms(); + size_t i; + + be_gas_emit_switch_section(GAS_SECTION_TEXT); + for (i = 0; i < n; ++i) { + ident *asmtext = get_irp_asm(i); + + be_emit_cstring("#APP\n"); + be_emit_write_line(); + be_emit_ident(asmtext); + be_emit_char('\n'); + be_emit_write_line(); + be_emit_cstring("#NO_APP\n"); + be_emit_write_line(); + } +} + +void be_gas_begin_compilation_unit(const be_main_env_t *env) +{ + be_dbg_open(); + be_dbg_unit_begin(env->cup_name); + be_dbg_types(); + + emit_global_asms(); +} + +void be_gas_end_compilation_unit(const be_main_env_t *env) +{ + emit_global_decls(env); + + be_dbg_unit_end(); + be_dbg_close(); +}