C++ emit_label函数代码示例

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本文整理汇总了C++中emit_label函数的典型用法代码示例。如果您正苦于以下问题：C++ emit_label函数的具体用法？C++ emit_label怎么用？C++ emit_label使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了emit_label函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: emit_format

void emit_format(){
	emit_label(".DEC");//emit format of integer.
	emit_ascii("%d\\n");
	
	//fprintf(fp,"    .ascii \"%%d\\n\\0\"\n");
	emit_label(".HEX");
	emit_ascii("0x%X\\n");
	//fprintf(fp,"    .ascii \"%%X\\n\\0\"\n");
}

开发者ID:noppadet008，项目名称:noobPrinterLangCompiler，代码行数:9，代码来源:asmX86emiter.c

示例2: emitstmt

void emitstmt(void* stmt){
	Syntax *st = (Syntax*) stmt;
	if(st->type == IF_STATEMENT){
		int label = labelconditionid++;
		char c[10];
		emit_condition(st->if_statement->condition,label);
		emitblock(st->if_statement->then);
		sprintf(c,".LC%d",label);
		emit_label(c);
	}else if(st->type == WHILE_SYNTAX){
		int labelcondition,labelblock;
		labelcondition = labelconditionid++;
		labelblock = labelconditionid++;
		char c[10];
		emit_instr_format("jmp",".LC%d",labelcondition);//to check condition
		sprintf(c,".LC%d",labelblock);
		emit_label(c);
		emitblock(st->while_statement->body);
		sprintf(c,".LC%d",labelcondition);
		emit_label(c);
		emit_condition(st->while_statement->condition,labelblock);
	}else if(st->type == PRINT_STATEMENT){
		emit_instr_format("leaq","%s(%%rip), %%rcx",st->printstmt->tag);
		emit_ins("call","printf");
	}else if(st->type == PRINTDEC_STATEMENT){
		emit_expression(st->printexp->exp);
		emit_ins("movq","%%rax, %%rdx");
		emit_ins("leaq",".DEC(%%rip), %%rcx");//.DEC print dec format
		emit_ins("call","printf");
	}else if(st->type == PRINTHEX_STATEMENT){
		emit_expression(st->printexp->exp);
		emit_ins("movq","%%rax, %%rdx");
		emit_ins("leaq",".HEX(%%rip), %%rcx");//.HEX print hex format
		emit_ins("call","printf");
	}else if(st->type == ASSIGNMENT){
		int tempoffset = findOffsetVar(st->assignment->var_name);//not found is -1
		if(tempoffset == -1){
			OffsetVarmap* temp = (OffsetVarmap*)malloc(sizeof(OffsetVarmap));
			temp->varname = st->assignment->var_name;
			temp->offset = offset;
			tempoffset = offset;
			//printf("offset %d \n",offset);
			offset = offset+8;
			list_push(tablevar,temp);
		}
		emit_expression(st->assignment->expression);
		emit_instr_format("movq","%%rax, -%d(%%rbp)",tempoffset);//result to variable.
	}else if(st->type == VARIABLE){
		OffsetVarmap *temp = (OffsetVarmap*)malloc(sizeof(OffsetVarmap));
		temp->varname = st->variable->var_name;
		temp->offset = offset;
		offset = offset+8;
		list_push(tablevar,temp);
	}else{
		fprintf(fp,"statement error");
	}
}

开发者ID:noppadet008，项目名称:noobPrinterLangCompiler，代码行数:57，代码来源:asmX86emiter.c

示例3: emit_literal

static void emit_literal(Node *node) {
    SAVE;
    switch (node->ty->kind) {
    case KIND_BOOL:
    case KIND_CHAR:
    case KIND_SHORT:
        emit("mov $%u, #rax", node->ival);
        break;
    case KIND_INT:
        emit("mov $%u, #rax", node->ival);
        break;
    case KIND_LONG:
    case KIND_LLONG: {
        emit("mov $%lu, #rax", node->ival);
        break;
    }
    case KIND_FLOAT: {
        if (!node->flabel) {
            node->flabel = make_label();
            float fval = node->fval;
            emit_noindent(".data");
            emit_label(node->flabel);
            emit(".long %d", *(uint32_t *)&fval);
            emit_noindent(".text");
        }
        emit("movss %s(#rip), #xmm0", node->flabel);
        break;
    }
    case KIND_DOUBLE:
    case KIND_LDOUBLE: {
        if (!node->flabel) {
            node->flabel = make_label();
            emit_noindent(".data");
            emit_label(node->flabel);
            emit(".quad %lu", *(uint64_t *)&node->fval);
            emit_noindent(".text");
        }
        emit("movsd %s(#rip), #xmm0", node->flabel);
        break;
    }
    case KIND_ARRAY: {
        if (!node->slabel) {
            node->slabel = make_label();
            emit_noindent(".data");
            emit_label(node->slabel);
            emit(".string \"%s\"", quote_cstring_len(node->sval, node->ty->size));
            emit_noindent(".text");
        }
        emit("lea %s(#rip), #rax", node->slabel);
        break;
    }
    default:
        error("internal error");
    }
}

开发者ID:4ker，项目名称:8cc，代码行数:55，代码来源:gen.c

示例4: gen_mod_pow2

/* Generate code for transformation 2 (with MODE and OPERATION, operands OP1
   and OP2, result TARGET and probability of taking the optimal path PROB).  */
static rtx
gen_mod_pow2 (enum machine_mode mode, enum rtx_code operation, rtx target,
	      rtx op1, rtx op2, int prob)
{
  rtx tmp, tmp1, tmp2, tmp3, jump;
  rtx neq_label = gen_label_rtx ();
  rtx end_label = gen_label_rtx ();
  rtx sequence;

  start_sequence ();
  
  if (!REG_P (op2))
    {
      tmp = gen_reg_rtx (mode);
      emit_move_insn (tmp, copy_rtx (op2));
    }
  else
    tmp = op2;

  tmp1 = expand_simple_binop (mode, PLUS, tmp, constm1_rtx, NULL_RTX,
			      0, OPTAB_WIDEN);
  tmp2 = expand_simple_binop (mode, AND, tmp, tmp1, NULL_RTX,
			      0, OPTAB_WIDEN);
  do_compare_rtx_and_jump (tmp2, const0_rtx, NE, 0, mode, NULL_RTX,
			   NULL_RTX, neq_label);

  /* Add branch probability to jump we just created.  */
  jump = get_last_insn ();
  REG_NOTES (jump) = gen_rtx_EXPR_LIST (REG_BR_PROB,
					GEN_INT (REG_BR_PROB_BASE - prob),
					REG_NOTES (jump));

  tmp3 = expand_simple_binop (mode, AND, op1, tmp1, target,
			      0, OPTAB_WIDEN);
  if (tmp3 != target)
    emit_move_insn (copy_rtx (target), tmp3);
  emit_jump_insn (gen_jump (end_label));
  emit_barrier ();

  emit_label (neq_label);
  tmp1 = simplify_gen_binary (operation, mode, copy_rtx (op1), copy_rtx (tmp));
  tmp1 = force_operand (tmp1, target);
  if (tmp1 != target)
    emit_move_insn (target, tmp1);
  
  emit_label (end_label);

  sequence = get_insns ();
  end_sequence ();
  rebuild_jump_labels (sequence);
  return sequence;
}

开发者ID:DJHartley，项目名称:iphone-dev，代码行数:54，代码来源:value-prof.c

示例5: gen_divmod_fixed_value

/* Generate code for transformation 1 (with MODE and OPERATION, operands OP1
   and OP2, whose value is expected to be VALUE, result TARGET and
   probability of taking the optimal path PROB).  */
static rtx
gen_divmod_fixed_value (enum machine_mode mode, enum rtx_code operation,
			rtx target, rtx op1, rtx op2, gcov_type value,
			int prob)
{
  rtx tmp, tmp1, jump;
  rtx neq_label = gen_label_rtx ();
  rtx end_label = gen_label_rtx ();
  rtx sequence;

  start_sequence ();
  
  if (!REG_P (op2))
    {
      tmp = gen_reg_rtx (mode);
      emit_move_insn (tmp, copy_rtx (op2));
    }
  else
    tmp = op2;

  do_compare_rtx_and_jump (tmp, GEN_INT (value), NE, 0, mode, NULL_RTX,
			   NULL_RTX, neq_label);

  /* Add branch probability to jump we just created.  */
  jump = get_last_insn ();
  REG_NOTES (jump) = gen_rtx_EXPR_LIST (REG_BR_PROB,
					GEN_INT (REG_BR_PROB_BASE - prob),
					REG_NOTES (jump));

  tmp1 = simplify_gen_binary (operation, mode,
			      copy_rtx (op1), GEN_INT (value));
  tmp1 = force_operand (tmp1, target);
  if (tmp1 != target)
    emit_move_insn (copy_rtx (target), copy_rtx (tmp1));

  emit_jump_insn (gen_jump (end_label));
  emit_barrier ();

  emit_label (neq_label);
  tmp1 = simplify_gen_binary (operation, mode,
			      copy_rtx (op1), copy_rtx (tmp));
  tmp1 = force_operand (tmp1, target);
  if (tmp1 != target)
    emit_move_insn (copy_rtx (target), copy_rtx (tmp1));
  
  emit_label (end_label);

  sequence = get_insns ();
  end_sequence ();
  rebuild_jump_labels (sequence);
  return sequence;
}

开发者ID:DJHartley，项目名称:iphone-dev，代码行数:55，代码来源:value-prof.c

示例6: while_stmt

static
while_stmt(stream, node, brk, cont, ret) {
    cont = new_label();
    emit_label( stream, cont );

    expr_code( stream, node[3], 0 );
    brk = new_label();
    branch_ifz( stream, brk );

    stmt_code( stream, node[4], brk, cont, ret );
    branch( stream, cont );
    emit_label( stream, brk );
}

开发者ID:ras52，项目名称:bootstrap，代码行数:13，代码来源:codegen.c

示例7: emit_do

static void emit_do(Node *node) {
    SAVE;
    char *begin = make_label();
    char *end = make_label();
    SET_JUMP_LABELS(end, begin);
    emit_label(begin);
    if (node->forbody)
        emit_expr(node->forbody);
    emit_expr(node->forcond);
    emit_je(end);
    emit_jmp(begin);
    emit_label(end);
    RESTORE_JUMP_LABELS();
}

开发者ID:irori，项目名称:8cc，代码行数:14，代码来源:gen.c

示例8: emit_switch

static void emit_switch(Node *node) {
    SAVE;
    char *oswitch = lswitch, *obreak = lbreak;
    emit_expr(node->switchexpr);
    lswitch = make_label();
    lbreak = make_label();
    emit_jmp(lswitch);
    if (node->switchbody)
        emit_expr(node->switchbody);
    emit_label(lswitch);
    emit_label(lbreak);
    lswitch = oswitch;
    lbreak = obreak;
}

开发者ID:irori，项目名称:8cc，代码行数:14，代码来源:gen.c

示例9: conditional

static
conditional(stream, node) {
    auto l1 = new_label(), l2 = new_label();

    expr_code( stream, node[3], 0 );

    branch_ifz( stream, l1 );
    expr_code( stream, node[4], 0 );
    branch( stream, l2 );
    
    emit_label( stream, l1 );
    expr_code( stream, node[5], 0 );
    emit_label( stream, l2 );
}

开发者ID:ras52，项目名称:bootstrap，代码行数:14，代码来源:codegen.c

示例10: do_stmt

static
do_stmt(stream, node, brk, cont, ret) {
    auto start = new_label();
    emit_label( stream, start );

    cont = new_label();
    brk = new_label();
    
    stmt_code( stream, node[3], brk, cont, ret );

    emit_label( stream, cont );
    expr_code( stream, node[4], 0 );
    branch_ifnz( stream, start );
    emit_label( stream, brk );
}

开发者ID:ras52，项目名称:bootstrap，代码行数:15，代码来源:codegen.c

示例11: switch_stmt

static
switch_stmt(stream, node, brk, cont, ret) {
    auto i = 0, def;
    expr_code( stream, node[3], 0 );
    def = brk = new_label();

    if (node[5][0] != 'swtb')
        int_error("No table for switch statement");

    while ( i < node[5][1] ) {
        auto c = node[5][3 + i++];

        /* Make asm labels for each case label.  We store these as integers 
         * in the unused 3rd operator slot of the case node. */
        c[5] = new_label();

        if (c[0] == 'case')
            /* Case labels have to be integers */
            branch_eq_n( stream, c[3][3], c[5] );
        else 
            def = c[5];
    }
    
    branch( stream, def ); 
    stmt_code( stream, node[4], brk, cont, ret );
    emit_label( stream, brk );
}

开发者ID:ras52，项目名称:bootstrap，代码行数:27，代码来源:codegen.c

示例12: case_stmt

static
case_stmt(stream, node, brk, cont, ret) {
    /* The case labels were written into the unused 3rd operator slot of 
     * the case node by switch_stmt(), below. */
    emit_label( stream, node[5] );
    stmt_code( stream, node[4], brk, cont, ret );
}

开发者ID:ras52，项目名称:bootstrap，代码行数:7，代码来源:codegen.c

示例13: do_jump_by_parts_equality_rtx

static void
do_jump_by_parts_equality_rtx (enum machine_mode mode, rtx op0, rtx op1,
			       rtx if_false_label, rtx if_true_label, int prob)
{
  int nwords = (GET_MODE_SIZE (mode) / UNITS_PER_WORD);
  rtx drop_through_label = 0;
  int i;

  if (op1 == const0_rtx)
    {
      do_jump_by_parts_zero_rtx (mode, op0, if_false_label, if_true_label,
				 prob);
      return;
    }
  else if (op0 == const0_rtx)
    {
      do_jump_by_parts_zero_rtx (mode, op1, if_false_label, if_true_label,
				 prob);
      return;
    }

  if (! if_false_label)
    drop_through_label = if_false_label = gen_label_rtx ();

  for (i = 0; i < nwords; i++)
    do_compare_rtx_and_jump (operand_subword_force (op0, i, mode),
                             operand_subword_force (op1, i, mode),
                             EQ, 0, word_mode, NULL_RTX,
			     if_false_label, NULL_RTX, prob);

  if (if_true_label)
    emit_jump (if_true_label);
  if (drop_through_label)
    emit_label (drop_through_label);
}

开发者ID:FilipinOTech，项目名称:gcc，代码行数:35，代码来源:dojump.c

示例14: emit_default

static void emit_default(Node *node) {
    SAVE;
    if (!lswitch)
        error("stray case label");
    emit_label(lswitch);
    lswitch = make_label();
}

开发者ID:irori，项目名称:8cc，代码行数:7，代码来源:gen.c

示例15: emit_str

void emit_str(Stack* string_stack){
	while(!stack_empty(string_stack)){
		Syntax *syntax = (Syntax*)stack_pop(string_stack);
		emit_label(syntax->printstmt->tag);
		emit_ascii(syntax->printstmt->value);
	}
}

开发者ID:noppadet008，项目名称:noobPrinterLangCompiler，代码行数:7，代码来源:asmX86emiter.c

示例16: while_loop

void while_loop () {
    int loop_to = emit_label(new_label());
    int break_to = new_label();

    bool do_while = try_match("do");

    if (do_while)
        line();

    match("while");
    match("(");
    expr(0);
    match(")");

    fprintf(output, "cmp eax, 0\n"
                    "je _%08d\n", break_to);

    if (do_while)
        match(";");

    else
        line();

    fprintf(output, "jmp _%08d\n", loop_to);
    fprintf(output, "\t_%08d:\n", break_to);
}

开发者ID:Fedjmike，项目名称:mini-c，代码行数:26，代码来源:cc.c

示例17: new_label

inline
void If::gen(const std::uint32_t &b, const std::uint32_t &a) {
    auto label = new_label();
    expr_->jumping(0, a);
    emit_label(label);
    statement_->gen(label, a);
}

开发者ID:sambatyon，项目名称:cpp-dragonbook-frontend，代码行数:7，代码来源:if.hpp

示例18: nds32_expand_setmem_loop_v3m

static bool
nds32_expand_setmem_loop_v3m (rtx dstmem, rtx size, rtx value)
{
  rtx base_reg = copy_to_mode_reg (Pmode, XEXP (dstmem, 0));
  rtx need_align_bytes = gen_reg_rtx (SImode);
  rtx last_2_bit = gen_reg_rtx (SImode);
  rtx byte_loop_base = gen_reg_rtx (SImode);
  rtx byte_loop_size = gen_reg_rtx (SImode);
  rtx remain_size = gen_reg_rtx (SImode);
  rtx new_base_reg;
  rtx value4byte, value4doubleword;
  rtx byte_mode_size;
  rtx last_byte_loop_label = gen_label_rtx ();

  size = force_reg (SImode, size);

  value4doubleword = nds32_gen_dup_8_byte_to_double_word_value (value);
  value4byte = simplify_gen_subreg (QImode, value4doubleword, DImode,
				    subreg_lowpart_offset (QImode, DImode));

  emit_move_insn (byte_loop_size, size);
  emit_move_insn (byte_loop_base, base_reg);

  /* Jump to last byte loop if size is less than 16.  */
  emit_cmp_and_jump_insns (size, gen_int_mode (16, SImode), LE, NULL,
			   SImode, 1, last_byte_loop_label);

  /* Make sure align to 4 byte first since v3m can't unalign access.  */
  emit_insn (gen_andsi3 (last_2_bit,
			 base_reg,
			 gen_int_mode (0x3, SImode)));

  emit_insn (gen_subsi3 (need_align_bytes,
			 gen_int_mode (4, SImode),
			 last_2_bit));

  /* Align to 4 byte. */
  new_base_reg = emit_setmem_byte_loop (base_reg,
					need_align_bytes,
					value4byte,
					true);

  /* Calculate remain size. */
  emit_insn (gen_subsi3 (remain_size, size, need_align_bytes));

  /* Set memory word by word. */
  byte_mode_size = emit_setmem_doubleword_loop (new_base_reg,
						remain_size,
						value4doubleword);

  emit_move_insn (byte_loop_base, new_base_reg);
  emit_move_insn (byte_loop_size, byte_mode_size);

  emit_label (last_byte_loop_label);

  /* And set memory for remain bytes. */
  emit_setmem_byte_loop (byte_loop_base, byte_loop_size, value4byte, false);
  return true;
}

开发者ID:KangDroid，项目名称:gcc，代码行数:59，代码来源:nds32-memory-manipulation.c

示例19: emit_expr

static void emit_expr(Node *node) {
    SAVE;
    switch (node->type) {
    case AST_LITERAL: emit_literal(node); return;
    case AST_STRING:  emit_literal_string(node); return;
    case AST_LVAR:    emit_lvar(node); return;
    case AST_GVAR:    emit_gvar(node); return;
    case AST_FUNCALL:
    case AST_FUNCPTR_CALL:
        emit_func_call(node);
        return;
    case AST_DECL:    emit_decl(node); return;
    case AST_CONV:    emit_conv(node); return;
    case AST_ADDR:    emit_addr(node->operand); return;
    case AST_DEREF:   emit_deref(node); return;
    case AST_IF:
    case AST_TERNARY:
        emit_ternary(node);
        return;
    case AST_FOR:     emit_for(node); return;
    case AST_WHILE:   emit_while(node); return;
    case AST_DO:      emit_do(node); return;
    case AST_SWITCH:  emit_switch(node); return;
    case AST_CASE:    emit_case(node); return;
    case AST_DEFAULT: emit_default(node); return;
    case AST_GOTO:    emit_goto(node); return;
    case AST_LABEL:
        if (node->newlabel)
            emit_label(node->newlabel);
        return;
    case AST_RETURN:  emit_return(node); return;
    case AST_BREAK:   emit_break(node); return;
    case AST_CONTINUE: emit_continue(node); return;
    case AST_COMPOUND_STMT: emit_compound_stmt(node); return;
    case AST_STRUCT_REF:
        emit_load_struct_ref(node->struc, node->ctype, 0);
        return;
    case AST_VA_START: emit_va_start(node); return;
    case AST_VA_ARG:   emit_va_arg(node); return;
    case OP_UMINUS:    emit_uminus(node); return;
    case OP_PRE_INC:   emit_pre_inc_dec(node, "add"); return;
    case OP_PRE_DEC:   emit_pre_inc_dec(node, "sub"); return;
    case OP_POST_INC:  emit_post_inc_dec(node, "add"); return;
    case OP_POST_DEC:  emit_post_inc_dec(node, "sub"); return;
    case '!': emit_lognot(node); return;
    case '&': emit_bitand(node); return;
    case '|': emit_bitor(node); return;
    case '~': emit_bitnot(node); return;
    case OP_LOGAND: emit_logand(node); return;
    case OP_LOGOR:  emit_logor(node); return;
    case OP_CAST:   emit_cast(node); return;
    case ',': emit_comma(node); return;
    case '=': emit_assign(node); return;
    case OP_LABEL_ADDR: emit_label_addr(node); return;
    case AST_COMPUTED_GOTO: emit_computed_goto(node); return;
    default:
        emit_binop(node);
    }
}

开发者ID:irori，项目名称:8cc，代码行数:59，代码来源:gen.c

示例20: emit_builtin_return_address

static void emit_builtin_return_address(Node *node) {
    push("r11");
    assert(vec_len(node->args) == 1);
    emit_expr(vec_head(node->args));
    char *loop = make_label();
    char *end = make_label();
    emit("mov #rbp, #r11");
    emit_label(loop);
    emit("test #rax, #rax");
    emit("jz %s", end);
    emit("mov (#r11), #r11");
    emit("sub $1, #rax");
    emit_jmp(loop);
    emit_label(end);
    emit("mov 8(#r11), #rax");
    pop("r11");
}

开发者ID:4ker，项目名称:8cc，代码行数:17，代码来源:gen.c

注：本文中的emit_label函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。