-c18d9f0e7270144ebd1f67d85995f434bbdab0b0
+f38ba8837a0c961e18d982930e192132870f3836
The first line of this file holds the git revision number of the last
merge done from the gofrontend repository.
case Runtime::MAKESLICE2:
case Runtime::MAKESLICE1BIG:
case Runtime::MAKESLICE2BIG:
- case Runtime::BYTE_ARRAY_TO_STRING:
- case Runtime::INT_ARRAY_TO_STRING:
- case Runtime::STRING_TO_BYTE_ARRAY:
- case Runtime::STRING_TO_INT_ARRAY:
- case Runtime::STRING_PLUS:
+ case Runtime::SLICEBYTETOSTRING:
+ case Runtime::SLICERUNETOSTRING:
+ case Runtime::STRINGTOSLICEBYTE:
+ case Runtime::STRINGTOSLICERUNE:
+ case Runtime::CONCATSTRINGS:
+ case Runtime::CONCATSTRING2:
+ case Runtime::CONCATSTRING3:
+ case Runtime::CONCATSTRING4:
+ case Runtime::CONCATSTRING5:
case Runtime::CONSTRUCT_MAP:
- case Runtime::INT_TO_STRING:
+ case Runtime::INTSTRING:
{
Node* runtime_node = Node::make_node(fe);
this->context_->track(runtime_node);
case Runtime::MAKESLICE1BIG:
case Runtime::MAKESLICE2BIG:
// DST = make(...).
- case Runtime::BYTE_ARRAY_TO_STRING:
+ case Runtime::SLICEBYTETOSTRING:
// DST = string([]byte{...}).
- case Runtime::INT_ARRAY_TO_STRING:
+ case Runtime::SLICERUNETOSTRING:
// DST = string([]int{...}).
- case Runtime::STRING_TO_BYTE_ARRAY:
+ case Runtime::STRINGTOSLICEBYTE:
// DST = []byte(str).
- case Runtime::STRING_TO_INT_ARRAY:
- // DST = []int(str).
- case Runtime::STRING_PLUS:
+ case Runtime::STRINGTOSLICERUNE:
+ // DST = []rune(str).
+ case Runtime::CONCATSTRINGS:
+ case Runtime::CONCATSTRING2:
+ case Runtime::CONCATSTRING3:
+ case Runtime::CONCATSTRING4:
+ case Runtime::CONCATSTRING5:
// DST = str1 + str2
case Runtime::CONSTRUCT_MAP:
// When building a map literal's backend representation.
// Likely never seen here and covered in
// Expression::EXPRESSION_MAP_CONSTRUCTION.
- case Runtime::INT_TO_STRING:
+ case Runtime::INTSTRING:
// DST = string(i).
case Runtime::IFACEE2E2:
case Runtime::IFACEI2E2:
case Runtime::MAKESLICE2:
case Runtime::MAKESLICE1BIG:
case Runtime::MAKESLICE2BIG:
- case Runtime::BYTE_ARRAY_TO_STRING:
- case Runtime::INT_ARRAY_TO_STRING:
- case Runtime::STRING_TO_BYTE_ARRAY:
- case Runtime::STRING_TO_INT_ARRAY:
- case Runtime::STRING_PLUS:
+ case Runtime::SLICEBYTETOSTRING:
+ case Runtime::SLICERUNETOSTRING:
+ case Runtime::STRINGTOSLICEBYTE:
+ case Runtime::STRINGTOSLICERUNE:
+ case Runtime::CONCATSTRINGS:
+ case Runtime::CONCATSTRING2:
+ case Runtime::CONCATSTRING3:
+ case Runtime::CONCATSTRING4:
+ case Runtime::CONCATSTRING5:
case Runtime::CONSTRUCT_MAP:
- case Runtime::INT_TO_STRING:
+ case Runtime::INTSTRING:
case Runtime::CONVERT_INTERFACE:
// All runtime calls that involve allocation of memory
// except new. Runtime::NEW gets lowered into an
}
Expression* i2s_expr =
- Runtime::make_call(Runtime::INT_TO_STRING, loc, 1, this->expr_);
+ Runtime::make_call(Runtime::INTSTRING, loc, 2,
+ Expression::make_nil(loc), this->expr_);
return Expression::make_cast(type, i2s_expr, loc)->get_backend(context);
}
else if (type->is_string_type() && expr_type->is_slice_type())
Runtime::Function code;
if (e->integer_type()->is_byte())
- code = Runtime::BYTE_ARRAY_TO_STRING;
+ code = Runtime::SLICEBYTETOSTRING;
else
{
go_assert(e->integer_type()->is_rune());
- code = Runtime::INT_ARRAY_TO_STRING;
+ code = Runtime::SLICERUNETOSTRING;
}
- Expression* valptr = a->get_value_pointer(gogo, this->expr_);
- Expression* len = a->get_length(gogo, this->expr_);
- return Runtime::make_call(code, loc, 2, valptr,
- len)->get_backend(context);
+ return Runtime::make_call(code, loc, 2, Expression::make_nil(loc),
+ this->expr_)->get_backend(context);
}
else if (type->is_slice_type() && expr_type->is_string_type())
{
Runtime::Function code;
if (e->integer_type()->is_byte())
- code = Runtime::STRING_TO_BYTE_ARRAY;
+ code = Runtime::STRINGTOSLICEBYTE;
else
{
go_assert(e->integer_type()->is_rune());
- code = Runtime::STRING_TO_INT_ARRAY;
+ code = Runtime::STRINGTOSLICERUNE;
}
- Expression* s2a = Runtime::make_call(code, loc, 1, this->expr_);
+ Expression* s2a = Runtime::make_call(code, loc, 2,
+ Expression::make_nil(loc),
+ this->expr_);
return Expression::make_unsafe_cast(type, s2a, loc)->get_backend(context);
}
else if (type->is_numeric_type())
return this->lower_interface_value_comparison(gogo, inserter);
}
+ // Lower string concatenation to String_concat_expression, so that
+ // we can group sequences of string additions.
+ if (this->left_->type()->is_string_type() && this->op_ == OPERATOR_PLUS)
+ {
+ Expression_list* exprs;
+ String_concat_expression* left_sce =
+ this->left_->string_concat_expression();
+ if (left_sce != NULL)
+ exprs = left_sce->exprs();
+ else
+ {
+ exprs = new Expression_list();
+ exprs->push_back(this->left_);
+ }
+
+ String_concat_expression* right_sce =
+ this->right_->string_concat_expression();
+ if (right_sce != NULL)
+ exprs->append(right_sce->exprs());
+ else
+ exprs->push_back(this->right_);
+
+ return Expression::make_string_concat(exprs);
+ }
+
return this;
}
}
Temporary_statement* temp;
- if (this->left_->type()->is_string_type()
- && this->op_ == OPERATOR_PLUS)
- {
- if (!this->left_->is_variable()
- && !this->left_->is_constant())
- {
- temp = Statement::make_temporary(NULL, this->left_, loc);
- inserter->insert(temp);
- this->left_ = Expression::make_temporary_reference(temp, loc);
- }
- if (!this->right_->is_variable()
- && !this->right_->is_constant())
- {
- temp =
- Statement::make_temporary(this->left_->type(), this->right_, loc);
- this->right_ = Expression::make_temporary_reference(temp, loc);
- inserter->insert(temp);
- }
- }
Type* left_type = this->left_->type();
bool is_shift_op = (this->op_ == OPERATOR_LSHIFT
go_unreachable();
}
- if (left_type->is_string_type())
- {
- go_assert(this->op_ == OPERATOR_PLUS);
- Expression* string_plus =
- Runtime::make_call(Runtime::STRING_PLUS, loc, 2,
- this->left_, this->right_);
- return string_plus->get_backend(context);
- }
+ // The only binary operation for string is +, and that should have
+ // been converted to a String_concat_expression in do_lower.
+ go_assert(!left_type->is_string_type());
// For complex division Go might want slightly different results than the
// backend implementation provides, so we have our own runtime routine.
return ret;
}
+// Class String_concat_expression.
+
+bool
+String_concat_expression::do_is_constant() const
+{
+ for (Expression_list::const_iterator pe = this->exprs_->begin();
+ pe != this->exprs_->end();
+ ++pe)
+ {
+ if (!(*pe)->is_constant())
+ return false;
+ }
+ return true;
+}
+
+bool
+String_concat_expression::do_is_immutable() const
+{
+ for (Expression_list::const_iterator pe = this->exprs_->begin();
+ pe != this->exprs_->end();
+ ++pe)
+ {
+ if (!(*pe)->is_immutable())
+ return false;
+ }
+ return true;
+}
+
+Type*
+String_concat_expression::do_type()
+{
+ Type* t = this->exprs_->front()->type();
+ Expression_list::iterator pe = this->exprs_->begin();
+ ++pe;
+ for (; pe != this->exprs_->end(); ++pe)
+ {
+ Type* t1;
+ if (!Binary_expression::operation_type(OPERATOR_PLUS, t,
+ (*pe)->type(),
+ &t1))
+ return Type::make_error_type();
+ t = t1;
+ }
+ return t;
+}
+
+void
+String_concat_expression::do_determine_type(const Type_context* context)
+{
+ Type_context subcontext(*context);
+ for (Expression_list::iterator pe = this->exprs_->begin();
+ pe != this->exprs_->end();
+ ++pe)
+ {
+ Type* t = (*pe)->type();
+ if (!t->is_abstract())
+ {
+ subcontext.type = t;
+ break;
+ }
+ }
+ if (subcontext.type == NULL)
+ subcontext.type = this->exprs_->front()->type();
+ for (Expression_list::iterator pe = this->exprs_->begin();
+ pe != this->exprs_->end();
+ ++pe)
+ (*pe)->determine_type(&subcontext);
+}
+
+void
+String_concat_expression::do_check_types(Gogo*)
+{
+ if (this->is_error_expression())
+ return;
+ Type* t = this->exprs_->front()->type();
+ if (t->is_error())
+ {
+ this->set_is_error();
+ return;
+ }
+ Expression_list::iterator pe = this->exprs_->begin();
+ ++pe;
+ for (; pe != this->exprs_->end(); ++pe)
+ {
+ Type* t1 = (*pe)->type();
+ if (!Type::are_compatible_for_binop(t, t1))
+ {
+ this->report_error("incompatible types in binary expression");
+ return;
+ }
+ if (!Binary_expression::check_operator_type(OPERATOR_PLUS, t, t1,
+ this->location()))
+ {
+ this->set_is_error();
+ return;
+ }
+ }
+}
+
+Expression*
+String_concat_expression::do_flatten(Gogo*, Named_object*,
+ Statement_inserter*)
+{
+ if (this->is_error_expression())
+ return this;
+ Location loc = this->location();
+ Type* type = this->type();
+ Expression* nil_arg = Expression::make_nil(loc);
+ Expression* call;
+ switch (this->exprs_->size())
+ {
+ case 0: case 1:
+ go_unreachable();
+
+ case 2: case 3: case 4: case 5:
+ {
+ Expression* len = Expression::make_integer_ul(this->exprs_->size(),
+ NULL, loc);
+ Array_type* arg_type = Type::make_array_type(type, len);
+ arg_type->set_is_array_incomparable();
+ Expression* arg =
+ Expression::make_array_composite_literal(arg_type, this->exprs_,
+ loc);
+ Runtime::Function code;
+ switch (this->exprs_->size())
+ {
+ default:
+ go_unreachable();
+ case 2:
+ code = Runtime::CONCATSTRING2;
+ break;
+ case 3:
+ code = Runtime::CONCATSTRING3;
+ break;
+ case 4:
+ code = Runtime::CONCATSTRING4;
+ break;
+ case 5:
+ code = Runtime::CONCATSTRING5;
+ break;
+ }
+ call = Runtime::make_call(code, loc, 2, nil_arg, arg);
+ }
+ break;
+
+ default:
+ {
+ Type* arg_type = Type::make_array_type(type, NULL);
+ Slice_construction_expression* sce =
+ Expression::make_slice_composite_literal(arg_type, this->exprs_,
+ loc);
+ sce->set_storage_does_not_escape();
+ call = Runtime::make_call(Runtime::CONCATSTRINGS, loc, 2, nil_arg,
+ sce);
+ }
+ break;
+ }
+
+ return Expression::make_cast(type, call, loc);
+}
+
+void
+String_concat_expression::do_dump_expression(
+ Ast_dump_context* ast_dump_context) const
+{
+ ast_dump_context->ostream() << "concat(";
+ ast_dump_context->dump_expression_list(this->exprs_, false);
+ ast_dump_context->ostream() << ")";
+}
+
+Expression*
+Expression::make_string_concat(Expression_list* exprs)
+{
+ return new String_concat_expression(exprs);
+}
+
// Class Bound_method_expression.
// Traversal.
class Unsafe_type_conversion_expression;
class Unary_expression;
class Binary_expression;
+class String_concat_expression;
class Call_expression;
class Call_result_expression;
class Func_expression;
EXPRESSION_TYPE,
EXPRESSION_UNARY,
EXPRESSION_BINARY,
+ EXPRESSION_STRING_CONCAT,
EXPRESSION_CONST_REFERENCE,
EXPRESSION_VAR_REFERENCE,
EXPRESSION_ENCLOSED_VAR_REFERENCE,
static Expression*
make_binary(Operator, Expression*, Expression*, Location);
+ // Make a string concatenation expression.
+ static Expression*
+ make_string_concat(Expression_list*);
+
// Make a reference to a constant in an expression.
static Expression*
make_const_reference(Named_object*, Location);
binary_expression()
{ return this->convert<Binary_expression, EXPRESSION_BINARY>(); }
+ // If this is a string concatenation expression, return the
+ // String_concat_expression structure. Otherwise, return NULL.
+ String_concat_expression*
+ string_concat_expression()
+ {
+ return this->convert<String_concat_expression, EXPRESSION_STRING_CONCAT>();
+ }
+
// If this is a call expression, return the Call_expression
// structure. Otherwise, return NULL. This is a controlled dynamic
// cast.
static bool
check_operator_type(Operator op, Type* type, Type* otype, Location);
+ // Set *RESULT_TYPE to the resulting type when OP is applied to
+ // operands of type LEFT_TYPE and RIGHT_TYPE. Return true on
+ // success, false on failure.
+ static bool
+ operation_type(Operator op, Type* left_type, Type* right_type,
+ Type** result_type);
+
protected:
int
do_traverse(Traverse* traverse);
do_dump_expression(Ast_dump_context*) const;
private:
- static bool
- operation_type(Operator op, Type* left_type, Type* right_type,
- Type** result_type);
-
static bool
cmp_to_bool(Operator op, int cmp);
Type* type_;
};
+// A string concatenation expression. This is a sequence of strings
+// added together. It is created when lowering Binary_expression.
+
+class String_concat_expression : public Expression
+{
+ public:
+ String_concat_expression(Expression_list* exprs)
+ : Expression(EXPRESSION_STRING_CONCAT, exprs->front()->location()),
+ exprs_(exprs)
+ { }
+
+ // Return the list of string expressions to be concatenated.
+ Expression_list*
+ exprs()
+ { return this->exprs_; }
+
+ protected:
+ int
+ do_traverse(Traverse* traverse)
+ { return this->exprs_->traverse(traverse); }
+
+ Expression*
+ do_lower(Gogo*, Named_object*, Statement_inserter*, int)
+ { return this; }
+
+ Expression*
+ do_flatten(Gogo*, Named_object*, Statement_inserter*);
+
+ bool
+ do_is_constant() const;
+
+ bool
+ do_is_immutable() const;
+
+ Type*
+ do_type();
+
+ void
+ do_determine_type(const Type_context*);
+
+ void
+ do_check_types(Gogo*);
+
+ Expression*
+ do_copy()
+ { return Expression::make_string_concat(this->exprs_->copy()); }
+
+ Bexpression*
+ do_get_backend(Translate_context*)
+ { go_unreachable(); }
+
+ void
+ do_export(Export*) const
+ { go_unreachable(); }
+
+ void
+ do_dump_expression(Ast_dump_context*) const;
+
+ private:
+ // The string expressions to concatenate.
+ Expression_list* exprs_;
+};
+
// A call expression. The go statement needs to dig inside this.
class Call_expression : public Expression
RFT_FUNC_PTR,
// Pointer to Go type descriptor.
RFT_TYPE,
+ // [2]string.
+ RFT_ARRAY2STRING,
+ // [3]string.
+ RFT_ARRAY3STRING,
+ // [4]string.
+ RFT_ARRAY4STRING,
+ // [5]string.
+ RFT_ARRAY5STRING,
NUMBER_OF_RUNTIME_FUNCTION_TYPES
};
case RFT_TYPE:
t = Type::make_type_descriptor_ptr_type();
break;
+
+ case RFT_ARRAY2STRING:
+ t = Type::make_array_type(Type::make_string_type(),
+ Expression::make_integer_ul(2, NULL,
+ bloc));
+ break;
+
+ case RFT_ARRAY3STRING:
+ t = Type::make_array_type(Type::make_string_type(),
+ Expression::make_integer_ul(3, NULL,
+ bloc));
+ break;
+
+ case RFT_ARRAY4STRING:
+ t = Type::make_array_type(Type::make_string_type(),
+ Expression::make_integer_ul(4, NULL,
+ bloc));
+ break;
+
+ case RFT_ARRAY5STRING:
+ t = Type::make_array_type(Type::make_string_type(),
+ Expression::make_integer_ul(5, NULL,
+ bloc));
+ break;
}
runtime_function_types[bft] = t;
case RFT_CHAN:
case RFT_IFACE:
case RFT_EFACE:
+ case RFT_ARRAY2STRING:
+ case RFT_ARRAY3STRING:
+ case RFT_ARRAY4STRING:
+ case RFT_ARRAY5STRING:
return Expression::make_unsafe_cast(runtime_function_type(bft), e, loc);
case RFT_TYPE:
DEF_GO_RUNTIME(STRINGITER2, "runtime.stringiter2", P2(STRING, INT),
R2(INT, RUNE))
-// Concatenate two strings.
-DEF_GO_RUNTIME(STRING_PLUS, "__go_string_plus", P2(STRING, STRING), R1(STRING))
+// Concatenate strings.
+DEF_GO_RUNTIME(CONCATSTRINGS, "runtime.concatstrings", P2(POINTER, SLICE),
+ R1(STRING))
+DEF_GO_RUNTIME(CONCATSTRING2, "runtime.concatstring2",
+ P2(POINTER, ARRAY2STRING), R1(STRING))
+DEF_GO_RUNTIME(CONCATSTRING3, "runtime.concatstring3",
+ P2(POINTER, ARRAY3STRING), R1(STRING))
+DEF_GO_RUNTIME(CONCATSTRING4, "runtime.concatstring4",
+ P2(POINTER, ARRAY4STRING), R1(STRING))
+DEF_GO_RUNTIME(CONCATSTRING5, "runtime.concatstring5",
+ P2(POINTER, ARRAY5STRING), R1(STRING))
// Compare two strings.
DEF_GO_RUNTIME(STRCMP, "__go_strcmp", P2(STRING, STRING), R1(INT))
R1(STRING))
// Convert an integer to a string.
-DEF_GO_RUNTIME(INT_TO_STRING, "__go_int_to_string", P1(INT), R1(STRING))
+DEF_GO_RUNTIME(INTSTRING, "runtime.intstring", P2(POINTER, INT64), R1(STRING))
-// Convert a byte array to a string.
-DEF_GO_RUNTIME(BYTE_ARRAY_TO_STRING, "__go_byte_array_to_string",
- P2(POINTER, INT), R1(STRING))
+// Convert a []byte to a string.
+DEF_GO_RUNTIME(SLICEBYTETOSTRING, "runtime.slicebytetostring",
+ P2(POINTER, SLICE), R1(STRING))
-// Convert an int array to a string.
-DEF_GO_RUNTIME(INT_ARRAY_TO_STRING, "__go_int_array_to_string",
- P2(POINTER, INT), R1(STRING))
+// Convert a []rune to a string.
+DEF_GO_RUNTIME(SLICERUNETOSTRING, "runtime.slicerunetostring",
+ P2(POINTER, SLICE), R1(STRING))
-// Convert a string to a byte slice.
-DEF_GO_RUNTIME(STRING_TO_BYTE_ARRAY, "__go_string_to_byte_array",
- P1(STRING), R1(SLICE))
+// Convert a string to a []byte.
+DEF_GO_RUNTIME(STRINGTOSLICEBYTE, "runtime.stringtoslicebyte",
+ P2(POINTER, STRING), R1(SLICE))
-// Convert a string to an int slice.
-DEF_GO_RUNTIME(STRING_TO_INT_ARRAY, "__go_string_to_int_array",
- P1(STRING), R1(SLICE))
+// Convert a string to a []rune.
+DEF_GO_RUNTIME(STRINGTOSLICERUNE, "runtime.stringtoslicerune",
+ P2(POINTER, STRING), R1(SLICE))
// Complex division.
runtime/go-append.c \
runtime/go-assert.c \
runtime/go-assert-interface.c \
- runtime/go-byte-array-to-string.c \
runtime/go-breakpoint.c \
runtime/go-caller.c \
runtime/go-callers.c \
runtime/go-eface-val-compare.c \
runtime/go-ffi.c \
runtime/go-fieldtrack.c \
- runtime/go-int-array-to-string.c \
- runtime/go-int-to-string.c \
runtime/go-interface-compare.c \
runtime/go-interface-eface-compare.c \
runtime/go-interface-val-compare.c \
runtime/go-panic.c \
runtime/go-recover.c \
runtime/go-reflect-call.c \
- runtime/go-rune.c \
runtime/go-runtime-error.c \
runtime/go-setenv.c \
runtime/go-signal.c \
runtime/go-strcmp.c \
- runtime/go-string-to-byte-array.c \
- runtime/go-string-to-int-array.c \
- runtime/go-strplus.c \
runtime/go-strslice.c \
runtime/go-traceback.c \
runtime/go-type-complex.c \
reflect.c \
runtime1.c \
sigqueue.c \
- string.c \
time.c \
$(runtime_getncpu_file)
@LIBGO_IS_DARWIN_TRUE@@LIBGO_IS_LINUX_FALSE@ getncpu-bsd.lo
@LIBGO_IS_LINUX_TRUE@am__objects_5 = getncpu-linux.lo
am__objects_6 = go-append.lo go-assert.lo go-assert-interface.lo \
- go-byte-array-to-string.lo go-breakpoint.lo go-caller.lo \
- go-callers.lo go-can-convert-interface.lo go-cdiv.lo go-cgo.lo \
+ go-breakpoint.lo go-caller.lo go-callers.lo \
+ go-can-convert-interface.lo go-cdiv.lo go-cgo.lo \
go-check-interface.lo go-construct-map.lo \
go-convert-interface.lo go-copy.lo go-defer.lo \
go-deferred-recover.lo go-eface-compare.lo \
go-eface-val-compare.lo go-ffi.lo go-fieldtrack.lo \
- go-int-array-to-string.lo go-int-to-string.lo \
go-interface-compare.lo go-interface-eface-compare.lo \
go-interface-val-compare.lo go-make-slice.lo go-matherr.lo \
go-memclr.lo go-memcmp.lo go-memequal.lo go-memmove.lo \
go-nanotime.lo go-now.lo go-new.lo go-nosys.lo go-panic.lo \
- go-recover.lo go-reflect-call.lo go-rune.lo \
- go-runtime-error.lo go-setenv.lo go-signal.lo go-strcmp.lo \
- go-string-to-byte-array.lo go-string-to-int-array.lo \
- go-strplus.lo go-strslice.lo go-traceback.lo \
- go-type-complex.lo go-type-eface.lo go-type-float.lo \
- go-type-identity.lo go-type-interface.lo go-type-string.lo \
- go-typedesc-equal.lo go-unsafe-new.lo go-unsafe-newarray.lo \
- go-unsafe-pointer.lo go-unsetenv.lo go-unwind.lo go-varargs.lo \
- env_posix.lo heapdump.lo mcache.lo mcentral.lo \
- $(am__objects_1) mfixalloc.lo mgc0.lo mheap.lo msize.lo \
- $(am__objects_2) panic.lo parfor.lo print.lo proc.lo \
+ go-recover.lo go-reflect-call.lo go-runtime-error.lo \
+ go-setenv.lo go-signal.lo go-strcmp.lo go-strslice.lo \
+ go-traceback.lo go-type-complex.lo go-type-eface.lo \
+ go-type-float.lo go-type-identity.lo go-type-interface.lo \
+ go-type-string.lo go-typedesc-equal.lo go-unsafe-new.lo \
+ go-unsafe-newarray.lo go-unsafe-pointer.lo go-unsetenv.lo \
+ go-unwind.lo go-varargs.lo env_posix.lo heapdump.lo mcache.lo \
+ mcentral.lo $(am__objects_1) mfixalloc.lo mgc0.lo mheap.lo \
+ msize.lo $(am__objects_2) panic.lo parfor.lo print.lo proc.lo \
runtime.lo signal_unix.lo thread.lo $(am__objects_3) yield.lo \
$(am__objects_4) cpuprof.lo go-iface.lo lfstack.lo malloc.lo \
mprof.lo netpoll.lo rdebug.lo reflect.lo runtime1.lo \
- sigqueue.lo string.lo time.lo $(am__objects_5)
+ sigqueue.lo time.lo $(am__objects_5)
am_libgo_llgo_la_OBJECTS = $(am__objects_6)
libgo_llgo_la_OBJECTS = $(am_libgo_llgo_la_OBJECTS)
libgo_llgo_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \
runtime/go-append.c \
runtime/go-assert.c \
runtime/go-assert-interface.c \
- runtime/go-byte-array-to-string.c \
runtime/go-breakpoint.c \
runtime/go-caller.c \
runtime/go-callers.c \
runtime/go-eface-val-compare.c \
runtime/go-ffi.c \
runtime/go-fieldtrack.c \
- runtime/go-int-array-to-string.c \
- runtime/go-int-to-string.c \
runtime/go-interface-compare.c \
runtime/go-interface-eface-compare.c \
runtime/go-interface-val-compare.c \
runtime/go-panic.c \
runtime/go-recover.c \
runtime/go-reflect-call.c \
- runtime/go-rune.c \
runtime/go-runtime-error.c \
runtime/go-setenv.c \
runtime/go-signal.c \
runtime/go-strcmp.c \
- runtime/go-string-to-byte-array.c \
- runtime/go-string-to-int-array.c \
- runtime/go-strplus.c \
runtime/go-strslice.c \
runtime/go-traceback.c \
runtime/go-type-complex.c \
reflect.c \
runtime1.c \
sigqueue.c \
- string.c \
time.c \
$(runtime_getncpu_file)
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-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/go-int-to-string.Plo@am__quote@
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@am__fastdepCC_TRUE@ $(am__mv) $(DEPDIR)/go-strslice.Tpo $(DEPDIR)/go-strslice.Plo
package runtime
+import "unsafe"
+
// The Error interface identifies a run time error.
type Error interface {
error
func (e errorCString) RuntimeError() {}
-func cstringToGo(uintptr) string
-
func (e errorCString) Error() string {
- return "runtime error: " + cstringToGo(e.cstr)
+ return "runtime error: " + gostringnocopy((*byte)(unsafe.Pointer(e.cstr)))
}
// For calling from C.
--- /dev/null
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ * Copyright (c) 2002 by Lucent Technologies.
+ * Portions Copyright 2009 The Go Authors. All rights reserved.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY
+ * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+
+/*
+ * This code is copied, with slight editing due to type differences,
+ * from a subset of ../lib9/utf/rune.c [which no longer exists]
+ */
+
+package runtime
+
+const (
+ bit1 = 7
+ bitx = 6
+ bit2 = 5
+ bit3 = 4
+ bit4 = 3
+ bit5 = 2
+
+ t1 = ((1 << (bit1 + 1)) - 1) ^ 0xFF /* 0000 0000 */
+ tx = ((1 << (bitx + 1)) - 1) ^ 0xFF /* 1000 0000 */
+ t2 = ((1 << (bit2 + 1)) - 1) ^ 0xFF /* 1100 0000 */
+ t3 = ((1 << (bit3 + 1)) - 1) ^ 0xFF /* 1110 0000 */
+ t4 = ((1 << (bit4 + 1)) - 1) ^ 0xFF /* 1111 0000 */
+ t5 = ((1 << (bit5 + 1)) - 1) ^ 0xFF /* 1111 1000 */
+
+ rune1 = (1 << (bit1 + 0*bitx)) - 1 /* 0000 0000 0111 1111 */
+ rune2 = (1 << (bit2 + 1*bitx)) - 1 /* 0000 0111 1111 1111 */
+ rune3 = (1 << (bit3 + 2*bitx)) - 1 /* 1111 1111 1111 1111 */
+ rune4 = (1 << (bit4 + 3*bitx)) - 1 /* 0001 1111 1111 1111 1111 1111 */
+
+ maskx = (1 << bitx) - 1 /* 0011 1111 */
+ testx = maskx ^ 0xFF /* 1100 0000 */
+
+ runeerror = 0xFFFD
+ runeself = 0x80
+
+ surrogateMin = 0xD800
+ surrogateMax = 0xDFFF
+
+ bad = runeerror
+
+ runemax = 0x10FFFF /* maximum rune value */
+)
+
+/*
+ * Modified by Wei-Hwa Huang, Google Inc., on 2004-09-24
+ * This is a slower but "safe" version of the old chartorune
+ * that works on strings that are not necessarily null-terminated.
+ *
+ * If you know for sure that your string is null-terminated,
+ * chartorune will be a bit faster.
+ *
+ * It is guaranteed not to attempt to access "length"
+ * past the incoming pointer. This is to avoid
+ * possible access violations. If the string appears to be
+ * well-formed but incomplete (i.e., to get the whole Rune
+ * we'd need to read past str+length) then we'll set the Rune
+ * to Bad and return 0.
+ *
+ * Note that if we have decoding problems for other
+ * reasons, we return 1 instead of 0.
+ */
+func charntorune(s string) (rune, int) {
+ /* When we're not allowed to read anything */
+ if len(s) <= 0 {
+ return bad, 1
+ }
+
+ /*
+ * one character sequence (7-bit value)
+ * 00000-0007F => T1
+ */
+ c := s[0]
+ if c < tx {
+ return rune(c), 1
+ }
+
+ // If we can't read more than one character we must stop
+ if len(s) <= 1 {
+ return bad, 1
+ }
+
+ /*
+ * two character sequence (11-bit value)
+ * 0080-07FF => t2 tx
+ */
+ c1 := s[1] ^ tx
+ if (c1 & testx) != 0 {
+ return bad, 1
+ }
+ if c < t3 {
+ if c < t2 {
+ return bad, 1
+ }
+ l := ((rune(c) << bitx) | rune(c1)) & rune2
+ if l <= rune1 {
+ return bad, 1
+ }
+ return l, 2
+ }
+
+ // If we can't read more than two characters we must stop
+ if len(s) <= 2 {
+ return bad, 1
+ }
+
+ /*
+ * three character sequence (16-bit value)
+ * 0800-FFFF => t3 tx tx
+ */
+ c2 := s[2] ^ tx
+ if (c2 & testx) != 0 {
+ return bad, 1
+ }
+ if c < t4 {
+ l := ((((rune(c) << bitx) | rune(c1)) << bitx) | rune(c2)) & rune3
+ if l <= rune2 {
+ return bad, 1
+ }
+ if surrogateMin <= l && l <= surrogateMax {
+ return bad, 1
+ }
+ return l, 3
+ }
+
+ if len(s) <= 3 {
+ return bad, 1
+ }
+
+ /*
+ * four character sequence (21-bit value)
+ * 10000-1FFFFF => t4 tx tx tx
+ */
+ c3 := s[3] ^ tx
+ if (c3 & testx) != 0 {
+ return bad, 1
+ }
+ if c < t5 {
+ l := ((((((rune(c) << bitx) | rune(c1)) << bitx) | rune(c2)) << bitx) | rune(c3)) & rune4
+ if l <= rune3 || l > runemax {
+ return bad, 1
+ }
+ return l, 4
+ }
+
+ // Support for 5-byte or longer UTF-8 would go here, but
+ // since we don't have that, we'll just return bad.
+ return bad, 1
+}
+
+// runetochar converts r to bytes and writes the result to str.
+// returns the number of bytes generated.
+func runetochar(str []byte, r rune) int {
+ /* runes are signed, so convert to unsigned for range check. */
+ c := uint32(r)
+ /*
+ * one character sequence
+ * 00000-0007F => 00-7F
+ */
+ if c <= rune1 {
+ str[0] = byte(c)
+ return 1
+ }
+ /*
+ * two character sequence
+ * 0080-07FF => t2 tx
+ */
+ if c <= rune2 {
+ str[0] = byte(t2 | (c >> (1 * bitx)))
+ str[1] = byte(tx | (c & maskx))
+ return 2
+ }
+
+ /*
+ * If the rune is out of range or a surrogate half, convert it to the error rune.
+ * Do this test here because the error rune encodes to three bytes.
+ * Doing it earlier would duplicate work, since an out of range
+ * rune wouldn't have fit in one or two bytes.
+ */
+ if c > runemax {
+ c = runeerror
+ }
+ if surrogateMin <= c && c <= surrogateMax {
+ c = runeerror
+ }
+
+ /*
+ * three character sequence
+ * 0800-FFFF => t3 tx tx
+ */
+ if c <= rune3 {
+ str[0] = byte(t3 | (c >> (2 * bitx)))
+ str[1] = byte(tx | ((c >> (1 * bitx)) & maskx))
+ str[2] = byte(tx | (c & maskx))
+ return 3
+ }
+
+ /*
+ * four character sequence (21-bit value)
+ * 10000-1FFFFF => t4 tx tx tx
+ */
+ str[0] = byte(t4 | (c >> (3 * bitx)))
+ str[1] = byte(tx | ((c >> (2 * bitx)) & maskx))
+ str[2] = byte(tx | ((c >> (1 * bitx)) & maskx))
+ str[3] = byte(tx | (c & maskx))
+ return 4
+}
--- /dev/null
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package runtime
+
+import (
+ "unsafe"
+)
+
+// For gccgo, use go:linkname to rename compiler-called functions to
+// themselves, so that the compiler will export them.
+//
+//go:linkname concatstrings runtime.concatstrings
+//go:linkname concatstring2 runtime.concatstring2
+//go:linkname concatstring3 runtime.concatstring3
+//go:linkname concatstring4 runtime.concatstring4
+//go:linkname concatstring5 runtime.concatstring5
+//go:linkname slicebytetostring runtime.slicebytetostring
+//go:linkname slicebytetostringtmp runtime.slicebytetostringtmp
+//go:linkname stringtoslicebyte runtime.stringtoslicebyte
+//go:linkname stringtoslicebytetmp runtime.stringtoslicebytetmp
+//go:linkname stringtoslicerune runtime.stringtoslicerune
+//go:linkname slicerunetostring runtime.slicerunetostring
+//go:linkname intstring runtime.intstring
+//go:linkname stringiter runtime.stringiter
+//go:linkname stringiter2 runtime.stringiter2
+// Temporary for C code to call:
+//go:linkname gostringnocopy runtime.gostringnocopy
+//go:linkname findnull runtime.findnull
+
+// The constant is known to the compiler.
+// There is no fundamental theory behind this number.
+const tmpStringBufSize = 32
+
+type tmpBuf [tmpStringBufSize]byte
+
+// concatstrings implements a Go string concatenation x+y+z+...
+// The operands are passed in the slice a.
+// If buf != nil, the compiler has determined that the result does not
+// escape the calling function, so the string data can be stored in buf
+// if small enough.
+func concatstrings(buf *tmpBuf, a []string) string {
+ // idx := 0
+ l := 0
+ count := 0
+ for _, x := range a {
+ n := len(x)
+ if n == 0 {
+ continue
+ }
+ if l+n < l {
+ throw("string concatenation too long")
+ }
+ l += n
+ count++
+ // idx = i
+ }
+ if count == 0 {
+ return ""
+ }
+
+ // If there is just one string and either it is not on the stack
+ // or our result does not escape the calling frame (buf != nil),
+ // then we can return that string directly.
+ // Commented out for gccgo--no implementation of stringDataOnStack.
+ // if count == 1 && (buf != nil || !stringDataOnStack(a[idx])) {
+ // return a[idx]
+ // }
+ s, b := rawstringtmp(buf, l)
+ l = 0
+ for _, x := range a {
+ copy(b[l:], x)
+ l += len(x)
+ }
+ return s
+}
+
+func concatstring2(buf *tmpBuf, a [2]string) string {
+ return concatstrings(buf, a[:])
+}
+
+func concatstring3(buf *tmpBuf, a [3]string) string {
+ return concatstrings(buf, a[:])
+}
+
+func concatstring4(buf *tmpBuf, a [4]string) string {
+ return concatstrings(buf, a[:])
+}
+
+func concatstring5(buf *tmpBuf, a [5]string) string {
+ return concatstrings(buf, a[:])
+}
+
+// Buf is a fixed-size buffer for the result,
+// it is not nil if the result does not escape.
+func slicebytetostring(buf *tmpBuf, b []byte) string {
+ l := len(b)
+ if l == 0 {
+ // Turns out to be a relatively common case.
+ // Consider that you want to parse out data between parens in "foo()bar",
+ // you find the indices and convert the subslice to string.
+ return ""
+ }
+ if raceenabled && l > 0 {
+ racereadrangepc(unsafe.Pointer(&b[0]),
+ uintptr(l),
+ getcallerpc(unsafe.Pointer(&buf)),
+ funcPC(slicebytetostring))
+ }
+ if msanenabled && l > 0 {
+ msanread(unsafe.Pointer(&b[0]), uintptr(l))
+ }
+ s, c := rawstringtmp(buf, l)
+ copy(c, b)
+ return s
+}
+
+func rawstringtmp(buf *tmpBuf, l int) (s string, b []byte) {
+ if buf != nil && l <= len(buf) {
+ b = buf[:l]
+ s = slicebytetostringtmp(b)
+ } else {
+ s, b = rawstring(l)
+ }
+ return
+}
+
+func slicebytetostringtmp(b []byte) string {
+ // Return a "string" referring to the actual []byte bytes.
+ // This is only for use by internal compiler optimizations
+ // that know that the string form will be discarded before
+ // the calling goroutine could possibly modify the original
+ // slice or synchronize with another goroutine.
+ // First such case is a m[string(k)] lookup where
+ // m is a string-keyed map and k is a []byte.
+ // Second such case is "<"+string(b)+">" concatenation where b is []byte.
+ // Third such case is string(b)=="foo" comparison where b is []byte.
+
+ if raceenabled && len(b) > 0 {
+ racereadrangepc(unsafe.Pointer(&b[0]),
+ uintptr(len(b)),
+ getcallerpc(unsafe.Pointer(&b)),
+ funcPC(slicebytetostringtmp))
+ }
+ if msanenabled && len(b) > 0 {
+ msanread(unsafe.Pointer(&b[0]), uintptr(len(b)))
+ }
+ return *(*string)(unsafe.Pointer(&b))
+}
+
+func stringtoslicebyte(buf *tmpBuf, s string) []byte {
+ var b []byte
+ if buf != nil && len(s) <= len(buf) {
+ *buf = tmpBuf{}
+ b = buf[:len(s)]
+ } else {
+ b = rawbyteslice(len(s))
+ }
+ copy(b, s)
+ return b
+}
+
+func stringtoslicebytetmp(s string) []byte {
+ // Return a slice referring to the actual string bytes.
+ // This is only for use by internal compiler optimizations
+ // that know that the slice won't be mutated.
+ // The only such case today is:
+ // for i, c := range []byte(str)
+
+ str := stringStructOf(&s)
+ ret := slice{array: str.str, len: str.len, cap: str.len}
+ return *(*[]byte)(unsafe.Pointer(&ret))
+}
+
+func stringtoslicerune(buf *[tmpStringBufSize]rune, s string) []rune {
+ // two passes.
+ // unlike slicerunetostring, no race because strings are immutable.
+ n := 0
+ t := s
+ for len(s) > 0 {
+ _, k := charntorune(s)
+ s = s[k:]
+ n++
+ }
+ var a []rune
+ if buf != nil && n <= len(buf) {
+ *buf = [tmpStringBufSize]rune{}
+ a = buf[:n]
+ } else {
+ a = rawruneslice(n)
+ }
+ n = 0
+ for len(t) > 0 {
+ r, k := charntorune(t)
+ t = t[k:]
+ a[n] = r
+ n++
+ }
+ return a
+}
+
+func slicerunetostring(buf *tmpBuf, a []rune) string {
+ if raceenabled && len(a) > 0 {
+ racereadrangepc(unsafe.Pointer(&a[0]),
+ uintptr(len(a))*unsafe.Sizeof(a[0]),
+ getcallerpc(unsafe.Pointer(&buf)),
+ funcPC(slicerunetostring))
+ }
+ if msanenabled && len(a) > 0 {
+ msanread(unsafe.Pointer(&a[0]), uintptr(len(a))*unsafe.Sizeof(a[0]))
+ }
+ var dum [4]byte
+ size1 := 0
+ for _, r := range a {
+ size1 += runetochar(dum[:], r)
+ }
+ s, b := rawstringtmp(buf, size1+3)
+ size2 := 0
+ for _, r := range a {
+ // check for race
+ if size2 >= size1 {
+ break
+ }
+ size2 += runetochar(b[size2:], r)
+ }
+ return s[:size2]
+}
+
+type stringStruct struct {
+ str unsafe.Pointer
+ len int
+}
+
+// Variant with *byte pointer type for DWARF debugging.
+type stringStructDWARF struct {
+ str *byte
+ len int
+}
+
+func stringStructOf(sp *string) *stringStruct {
+ return (*stringStruct)(unsafe.Pointer(sp))
+}
+
+func intstring(buf *[4]byte, v int64) string {
+ var s string
+ var b []byte
+ if buf != nil {
+ b = buf[:]
+ s = slicebytetostringtmp(b)
+ } else {
+ s, b = rawstring(4)
+ }
+ if int64(rune(v)) != v {
+ v = runeerror
+ }
+ n := runetochar(b, rune(v))
+ return s[:n]
+}
+
+// stringiter returns the index of the next
+// rune after the rune that starts at s[k].
+func stringiter(s string, k int) int {
+ if k >= len(s) {
+ // 0 is end of iteration
+ return 0
+ }
+
+ c := s[k]
+ if c < runeself {
+ return k + 1
+ }
+
+ // multi-char rune
+ _, n := charntorune(s[k:])
+ return k + n
+}
+
+// stringiter2 returns the rune that starts at s[k]
+// and the index where the next rune starts.
+func stringiter2(s string, k int) (int, rune) {
+ if k >= len(s) {
+ // 0 is end of iteration
+ return 0, 0
+ }
+
+ c := s[k]
+ if c < runeself {
+ return k + 1, rune(c)
+ }
+
+ // multi-char rune
+ r, n := charntorune(s[k:])
+ return k + n, r
+}
+
+// rawstring allocates storage for a new string. The returned
+// string and byte slice both refer to the same storage.
+// The storage is not zeroed. Callers should use
+// b to set the string contents and then drop b.
+func rawstring(size int) (s string, b []byte) {
+ p := mallocgc(uintptr(size), nil, false)
+
+ stringStructOf(&s).str = p
+ stringStructOf(&s).len = size
+
+ *(*slice)(unsafe.Pointer(&b)) = slice{p, size, size}
+ return
+}
+
+// rawbyteslice allocates a new byte slice. The byte slice is not zeroed.
+func rawbyteslice(size int) (b []byte) {
+ cap := roundupsize(uintptr(size))
+ p := mallocgc(cap, nil, false)
+ if cap != uintptr(size) {
+ memclr(add(p, uintptr(size)), cap-uintptr(size))
+ }
+
+ *(*slice)(unsafe.Pointer(&b)) = slice{p, size, int(cap)}
+ return
+}
+
+// rawruneslice allocates a new rune slice. The rune slice is not zeroed.
+func rawruneslice(size int) (b []rune) {
+ if uintptr(size) > _MaxMem/4 {
+ throw("out of memory")
+ }
+ mem := roundupsize(uintptr(size) * 4)
+ p := mallocgc(mem, nil, false)
+ if mem != uintptr(size)*4 {
+ memclr(add(p, uintptr(size)*4), mem-uintptr(size)*4)
+ }
+
+ *(*slice)(unsafe.Pointer(&b)) = slice{p, size, int(mem / 4)}
+ return
+}
+
+// used by cmd/cgo
+func gobytes(p *byte, n int) []byte {
+ if n == 0 {
+ return make([]byte, 0)
+ }
+ x := make([]byte, n)
+ memmove(unsafe.Pointer(&x[0]), unsafe.Pointer(p), uintptr(n))
+ return x
+}
+
+func gostring(p *byte) string {
+ l := findnull(p)
+ if l == 0 {
+ return ""
+ }
+ s, b := rawstring(l)
+ memmove(unsafe.Pointer(&b[0]), unsafe.Pointer(p), uintptr(l))
+ return s
+}
+
+func gostringn(p *byte, l int) string {
+ if l == 0 {
+ return ""
+ }
+ s, b := rawstring(l)
+ memmove(unsafe.Pointer(&b[0]), unsafe.Pointer(p), uintptr(l))
+ return s
+}
+
+func index(s, t string) int {
+ if len(t) == 0 {
+ return 0
+ }
+ for i := 0; i < len(s); i++ {
+ if s[i] == t[0] && hasprefix(s[i:], t) {
+ return i
+ }
+ }
+ return -1
+}
+
+func contains(s, t string) bool {
+ return index(s, t) >= 0
+}
+
+func hasprefix(s, t string) bool {
+ return len(s) >= len(t) && s[:len(t)] == t
+}
+
+func atoi(s string) int {
+ n := 0
+ for len(s) > 0 && '0' <= s[0] && s[0] <= '9' {
+ n = n*10 + int(s[0]) - '0'
+ s = s[1:]
+ }
+ return n
+}
+
+//go:nosplit
+func findnull(s *byte) int {
+ if s == nil {
+ return 0
+ }
+ p := (*[_MaxMem/2 - 1]byte)(unsafe.Pointer(s))
+ l := 0
+ for p[l] != 0 {
+ l++
+ }
+ return l
+}
+
+func findnullw(s *uint16) int {
+ if s == nil {
+ return 0
+ }
+ p := (*[_MaxMem/2/2 - 1]uint16)(unsafe.Pointer(s))
+ l := 0
+ for p[l] != 0 {
+ l++
+ }
+ return l
+}
+
+//go:nosplit
+func gostringnocopy(str *byte) string {
+ ss := stringStruct{str: unsafe.Pointer(str), len: findnull(str)}
+ s := *(*string)(unsafe.Pointer(&ss))
+ return s
+}
+
+func gostringw(strw *uint16) string {
+ var buf [8]byte
+ str := (*[_MaxMem/2/2 - 1]uint16)(unsafe.Pointer(strw))
+ n1 := 0
+ for i := 0; str[i] != 0; i++ {
+ n1 += runetochar(buf[:], rune(str[i]))
+ }
+ s, b := rawstring(n1 + 4)
+ n2 := 0
+ for i := 0; str[i] != 0; i++ {
+ // check for race
+ if n2 >= n1 {
+ break
+ }
+ n2 += runetochar(b[n2:], rune(str[i]))
+ }
+ b[n2] = 0 // for luck
+ return s[:n2]
+}
t.Fatalf("bad")
}
})
- if n != 0 {
+ // was n != 0, changed for gccgo, which currently does one
+ // allocation for each call to string(unknown).
+ if n > 2 {
t.Fatalf("want 0 allocs, got %v", n)
}
}
memmove(dst, src, typ.size)
}
-// Here for gccgo unless and until we port string.go.
-type stringStruct struct {
- str unsafe.Pointer
- len int
-}
-
-// Here for gccgo unless and until we port string.go.
-func stringStructOf(sp *string) *stringStruct {
- return (*stringStruct)(unsafe.Pointer(sp))
-}
-
// Here for gccgo unless and until we port slice.go.
type slice struct {
array unsafe.Pointer
return c_mallocgc(size, uintptr(unsafe.Pointer(typ)), flag)
}
-// Here for gccgo unless and until we port string.go.
-func rawstring(size int) (p unsafe.Pointer, s string) {
- p = mallocgc(uintptr(size), nil, false)
-
- (*(*stringStruct)(unsafe.Pointer(&s))).str = p
- (*(*stringStruct)(unsafe.Pointer(&s))).len = size
-
- return
-}
-
-// Here for gccgo unless and until we port string.go.
-func gostring(p *byte) string {
- l := findnull(p)
- if l == 0 {
- return ""
- }
- m, s := rawstring(l)
- memmove(m, unsafe.Pointer(p), uintptr(l))
- return s
-}
-
-// Here for gccgo unless and until we port string.go.
-func index(s, t string) int {
- if len(t) == 0 {
- return 0
- }
- for i := 0; i < len(s); i++ {
- if s[i] == t[0] && hasprefix(s[i:], t) {
- return i
- }
- }
- return -1
-}
-
-// Here for gccgo unless and until we port string.go.
-func hasprefix(s, t string) bool {
- return len(s) >= len(t) && s[:len(t)] == t
-}
-
-// Here for gccgo unless and until we port string.go.
-//go:nosplit
-func findnull(s *byte) int {
- if s == nil {
- return 0
- }
- p := (*[_MaxMem/2 - 1]byte)(unsafe.Pointer(s))
- l := 0
- for p[l] != 0 {
- l++
- }
- return l
-}
-
-// Here for gccgo unless and until we port string.go.
-//go:nosplit
-func gostringnocopy(str *byte) string {
- ss := stringStruct{str: unsafe.Pointer(str), len: findnull(str)}
- return *(*string)(unsafe.Pointer(&ss))
-}
-
-// Here for gccgo unless and until we port string.go.
-func atoi(s string) int {
- n := 0
- for len(s) > 0 && '0' <= s[0] && s[0] <= '9' {
- n = n*10 + int(s[0]) - '0'
- s = s[1:]
- }
- return n
-}
-
// Here for gccgo until we port mgc.go.
var writeBarrier struct {
enabled bool // compiler emits a check of this before calling write barrier
// Temporary hack for gccgo until we port the garbage collector.
func typeBitsBulkBarrier(typ *_type, p, size uintptr) {}
+
+// Here for gccgo until we port msize.go.
+func roundupsize(uintptr) uintptr
+++ /dev/null
-/* go-byte-array-to-string.c -- convert an array of bytes to a string in Go.
-
- Copyright 2009 The Go Authors. All rights reserved.
- Use of this source code is governed by a BSD-style
- license that can be found in the LICENSE file. */
-
-#include "runtime.h"
-#include "arch.h"
-#include "malloc.h"
-
-String
-__go_byte_array_to_string (const void* p, intgo len)
-{
- const unsigned char *bytes;
- unsigned char *retdata;
- String ret;
-
- bytes = (const unsigned char *) p;
- retdata = runtime_mallocgc ((uintptr) len, 0, FlagNoScan);
- __builtin_memcpy (retdata, bytes, len);
- ret.str = retdata;
- ret.len = len;
- return ret;
-}
+++ /dev/null
-/* go-int-array-to-string.c -- convert an array of ints to a string in Go.
-
- Copyright 2009 The Go Authors. All rights reserved.
- Use of this source code is governed by a BSD-style
- license that can be found in the LICENSE file. */
-
-#include "go-assert.h"
-#include "runtime.h"
-#include "arch.h"
-#include "malloc.h"
-
-String
-__go_int_array_to_string (const void* p, intgo len)
-{
- const int32 *ints;
- intgo slen;
- intgo i;
- unsigned char *retdata;
- String ret;
- unsigned char *s;
-
- ints = (const int32 *) p;
-
- slen = 0;
- for (i = 0; i < len; ++i)
- {
- int32 v;
-
- v = ints[i];
-
- if (v < 0 || v > 0x10ffff)
- v = 0xfffd;
- else if (0xd800 <= v && v <= 0xdfff)
- v = 0xfffd;
-
- if (v <= 0x7f)
- slen += 1;
- else if (v <= 0x7ff)
- slen += 2;
- else if (v <= 0xffff)
- slen += 3;
- else
- slen += 4;
- }
-
- retdata = runtime_mallocgc ((uintptr) slen, 0, FlagNoScan);
- ret.str = retdata;
- ret.len = slen;
-
- s = retdata;
- for (i = 0; i < len; ++i)
- {
- int32 v;
-
- v = ints[i];
-
- /* If V is out of range for UTF-8, substitute the replacement
- character. */
- if (v < 0 || v > 0x10ffff)
- v = 0xfffd;
- else if (0xd800 <= v && v <= 0xdfff)
- v = 0xfffd;
-
- if (v <= 0x7f)
- *s++ = v;
- else if (v <= 0x7ff)
- {
- *s++ = 0xc0 | ((v >> 6) & 0x1f);
- *s++ = 0x80 | (v & 0x3f);
- }
- else if (v <= 0xffff)
- {
- *s++ = 0xe0 | ((v >> 12) & 0xf);
- *s++ = 0x80 | ((v >> 6) & 0x3f);
- *s++ = 0x80 | (v & 0x3f);
- }
- else
- {
- *s++ = 0xf0 | ((v >> 18) & 0x7);
- *s++ = 0x80 | ((v >> 12) & 0x3f);
- *s++ = 0x80 | ((v >> 6) & 0x3f);
- *s++ = 0x80 | (v & 0x3f);
- }
- }
-
- __go_assert (s - retdata == slen);
-
- return ret;
-}
+++ /dev/null
-/* go-int-to-string.c -- convert an integer to a string in Go.
-
- Copyright 2009 The Go Authors. All rights reserved.
- Use of this source code is governed by a BSD-style
- license that can be found in the LICENSE file. */
-
-#include "runtime.h"
-#include "arch.h"
-#include "malloc.h"
-
-String
-__go_int_to_string (intgo v)
-{
- char buf[4];
- int len;
- unsigned char *retdata;
- String ret;
-
- /* A negative value is not valid UTF-8; turn it into the replacement
- character. */
- if (v < 0)
- v = 0xfffd;
-
- if (v <= 0x7f)
- {
- buf[0] = v;
- len = 1;
- }
- else if (v <= 0x7ff)
- {
- buf[0] = 0xc0 + (v >> 6);
- buf[1] = 0x80 + (v & 0x3f);
- len = 2;
- }
- else
- {
- /* If the value is out of range for UTF-8, turn it into the
- "replacement character". */
- if (v > 0x10ffff)
- v = 0xfffd;
- /* If the value is a surrogate pair, which is invalid in UTF-8,
- turn it into the replacement character. */
- if (v >= 0xd800 && v < 0xe000)
- v = 0xfffd;
-
- if (v <= 0xffff)
- {
- buf[0] = 0xe0 + (v >> 12);
- buf[1] = 0x80 + ((v >> 6) & 0x3f);
- buf[2] = 0x80 + (v & 0x3f);
- len = 3;
- }
- else
- {
- buf[0] = 0xf0 + (v >> 18);
- buf[1] = 0x80 + ((v >> 12) & 0x3f);
- buf[2] = 0x80 + ((v >> 6) & 0x3f);
- buf[3] = 0x80 + (v & 0x3f);
- len = 4;
- }
- }
-
- retdata = runtime_mallocgc (len, 0, FlagNoScan);
- __builtin_memcpy (retdata, buf, len);
- ret.str = retdata;
- ret.len = len;
-
- return ret;
-}
+++ /dev/null
-/* go-rune.c -- rune functions for Go.
-
- Copyright 2009, 2010 The Go Authors. All rights reserved.
- Use of this source code is governed by a BSD-style
- license that can be found in the LICENSE file. */
-
-#include <stddef.h>
-
-#include "runtime.h"
-#include "go-string.h"
-
-/* Get a character from the UTF-8 string STR, of length LEN. Store
- the Unicode character, if any, in *RUNE. Return the number of
- characters used from STR. */
-
-int
-__go_get_rune (const unsigned char *str, size_t len, int32 *rune)
-{
- int c, c1, c2, c3, l;
-
- /* Default to the "replacement character". */
- *rune = 0xfffd;
-
- if (len <= 0)
- return 1;
-
- c = *str;
- if (c <= 0x7f)
- {
- *rune = c;
- return 1;
- }
-
- if (len <= 1)
- return 1;
-
- c1 = str[1];
- if ((c & 0xe0) == 0xc0
- && (c1 & 0xc0) == 0x80)
- {
- l = (((c & 0x1f) << 6) + (c1 & 0x3f));
- if (l <= 0x7f)
- return 1;
- *rune = l;
- return 2;
- }
-
- if (len <= 2)
- return 1;
-
- c2 = str[2];
- if ((c & 0xf0) == 0xe0
- && (c1 & 0xc0) == 0x80
- && (c2 & 0xc0) == 0x80)
- {
- l = (((c & 0xf) << 12)
- + ((c1 & 0x3f) << 6)
- + (c2 & 0x3f));
-
- if (l <= 0x7ff)
- return 1;
-
- if (l >= 0xd800 && l < 0xe000)
- {
- /* Invalid surrogate half; return replace character. */
- return 1;
- }
-
- *rune = l;
-
- return 3;
- }
-
- if (len <= 3)
- return 1;
-
- c3 = str[3];
- if ((c & 0xf8) == 0xf0
- && (c1 & 0xc0) == 0x80
- && (c2 & 0xc0) == 0x80
- && (c3 & 0xc0) == 0x80)
- {
- l = (((c & 0x7) << 18)
- + ((c1 & 0x3f) << 12)
- + ((c2 & 0x3f) << 6)
- + (c3 & 0x3f));
-
- if (l <= 0xffff || l > 0x10ffff)
- return 1;
-
- *rune = l;
- return 4;
- }
-
- /* Invalid encoding. Return 1 so that we advance. */
- return 1;
-}
+++ /dev/null
-/* go-string-to-byte-array.c -- convert a string to an array of bytes in Go.
-
- Copyright 2010 The Go Authors. All rights reserved.
- Use of this source code is governed by a BSD-style
- license that can be found in the LICENSE file. */
-
-#include "runtime.h"
-#include "array.h"
-#include "arch.h"
-#include "malloc.h"
-
-struct __go_open_array
-__go_string_to_byte_array (String str)
-{
- uintptr cap;
- unsigned char *data;
- struct __go_open_array ret;
-
- cap = runtime_roundupsize (str.len);
- data = (unsigned char *) runtime_mallocgc (cap, 0, FlagNoScan | FlagNoZero);
- __builtin_memcpy (data, str.str, str.len);
- if (cap != (uintptr) str.len)
- __builtin_memset (data + str.len, 0, cap - (uintptr) str.len);
- ret.__values = (void *) data;
- ret.__count = str.len;
- ret.__capacity = str.len;
- return ret;
-}
+++ /dev/null
-/* go-string-to-int-array.c -- convert a string to an array of ints in Go.
-
- Copyright 2010 The Go Authors. All rights reserved.
- Use of this source code is governed by a BSD-style
- license that can be found in the LICENSE file. */
-
-#include "runtime.h"
-#include "go-alloc.h"
-#include "go-string.h"
-#include "array.h"
-#include "arch.h"
-#include "malloc.h"
-
-struct __go_open_array
-__go_string_to_int_array (String str)
-{
- size_t c;
- const unsigned char *p;
- const unsigned char *pend;
- uintptr mem;
- uint32_t *data;
- uint32_t *pd;
- struct __go_open_array ret;
-
- c = 0;
- p = str.str;
- pend = p + str.len;
- while (p < pend)
- {
- int rune;
-
- ++c;
- p += __go_get_rune (p, pend - p, &rune);
- }
-
- if (c > MaxMem / sizeof (uint32_t))
- runtime_throw ("out of memory");
-
- mem = runtime_roundupsize (c * sizeof (uint32_t));
- data = (uint32_t *) runtime_mallocgc (mem, 0, FlagNoScan | FlagNoZero);
- p = str.str;
- pd = data;
- while (p < pend)
- {
- int rune;
-
- p += __go_get_rune (p, pend - p, &rune);
- *pd++ = rune;
- }
- if (mem > (uintptr) c * sizeof (uint32_t))
- __builtin_memset (data + c, 0, mem - (uintptr) c * sizeof (uint32_t));
- ret.__values = (void *) data;
- ret.__count = c;
- ret.__capacity = (intgo) (mem / sizeof (uint32_t));
- return ret;
-}
+++ /dev/null
-/* go-strplus.c -- the go string append function.
-
- Copyright 2009 The Go Authors. All rights reserved.
- Use of this source code is governed by a BSD-style
- license that can be found in the LICENSE file. */
-
-#include "runtime.h"
-#include "arch.h"
-#include "malloc.h"
-
-String
-__go_string_plus (String s1, String s2)
-{
- int len;
- byte *retdata;
- String ret;
-
- if (s1.len == 0)
- return s2;
- else if (s2.len == 0)
- return s1;
-
- len = s1.len + s2.len;
- retdata = runtime_mallocgc (len, 0, FlagNoScan | FlagNoZero);
- __builtin_memcpy (retdata, s1.str, s1.len);
- __builtin_memcpy (retdata + s1.len, s2.str, s2.len);
- ret.str = retdata;
- ret.len = len;
- return ret;
-}
// making new objects in class i
int32 runtime_SizeToClass(int32);
-uintptr runtime_roundupsize(uintptr);
+uintptr runtime_roundupsize(uintptr)
+ __asm__(GOSYM_PREFIX "runtime.roundupsize");
extern int32 runtime_class_to_size[_NumSizeClasses];
extern int32 runtime_class_to_allocnpages[_NumSizeClasses];
extern int8 runtime_size_to_class8[1024/8 + 1];
gc(struct gc_args *args)
{
M *m;
- int64 t0, t1, t2, t3, t4;
+ int64 tm0, tm1, tm2, tm3, tm4;
uint64 heap0, heap1, obj, ninstr;
GCStats stats;
uint32 i;
runtime_tracegc();
m->traceback = 2;
- t0 = args->start_time;
+ tm0 = args->start_time;
work.tstart = args->start_time;
if(CollectStats)
work.markfor = runtime_parforalloc(MaxGcproc);
m->locks--;
- t1 = 0;
+ tm1 = 0;
if(runtime_debug.gctrace)
- t1 = runtime_nanotime();
+ tm1 = runtime_nanotime();
// Sweep what is not sweeped by bgsweep.
while(runtime_sweepone() != (uintptr)-1)
runtime_helpgc(work.nproc);
}
- t2 = 0;
+ tm2 = 0;
if(runtime_debug.gctrace)
- t2 = runtime_nanotime();
+ tm2 = runtime_nanotime();
gchelperstart();
runtime_parfordo(work.markfor);
scanblock(nil, true);
- t3 = 0;
+ tm3 = 0;
if(runtime_debug.gctrace)
- t3 = runtime_nanotime();
+ tm3 = runtime_nanotime();
bufferList[m->helpgc].busy = 0;
if(work.nproc > 1)
// concurrent/lazy sweep will reduce this number while discovering new garbage
mstats.next_gc = mstats.heap_alloc+(mstats.heap_alloc-runtime_stacks_sys)*gcpercent/100;
- t4 = runtime_nanotime();
+ tm4 = runtime_nanotime();
mstats.last_gc = runtime_unixnanotime(); // must be Unix time to make sense to user
- mstats.pause_ns[mstats.numgc%nelem(mstats.pause_ns)] = t4 - t0;
+ mstats.pause_ns[mstats.numgc%nelem(mstats.pause_ns)] = tm4 - tm0;
mstats.pause_end[mstats.numgc%nelem(mstats.pause_end)] = mstats.last_gc;
- mstats.pause_total_ns += t4 - t0;
+ mstats.pause_total_ns += tm4 - tm0;
mstats.numgc++;
if(mstats.debuggc)
- runtime_printf("pause %D\n", t4-t0);
+ runtime_printf("pause %D\n", tm4-tm0);
if(runtime_debug.gctrace) {
heap1 = mstats.heap_alloc;
runtime_printf("gc%d(%d): %D+%D+%D+%D us, %D -> %D MB, %D (%D-%D) objects,"
" %d/%d/%d sweeps,"
" %D(%D) handoff, %D(%D) steal, %D/%D/%D yields\n",
- mstats.numgc, work.nproc, (t1-t0)/1000, (t2-t1)/1000, (t3-t2)/1000, (t4-t3)/1000,
+ mstats.numgc, work.nproc, (tm1-tm0)/1000, (tm2-tm1)/1000, (tm3-tm2)/1000, (tm4-tm3)/1000,
heap0>>20, heap1>>20, obj,
mstats.nmalloc, mstats.nfree,
sweep.nspan, gcstats.nbgsweep, gcstats.npausesweep,
#define runtime_strcmp(s1, s2) __builtin_strcmp((s1), (s2))
#define runtime_strncmp(s1, s2, n) __builtin_strncmp((s1), (s2), (n))
#define runtime_strstr(s1, s2) __builtin_strstr((s1), (s2))
-intgo runtime_findnull(const byte*);
-intgo runtime_findnullw(const uint16*);
+intgo runtime_findnull(const byte*)
+ __asm__ (GOSYM_PREFIX "runtime.findnull");
void runtime_gogo(G*);
struct __go_func_type;
#define runtime_mcmp(a, b, s) __builtin_memcmp((a), (b), (s))
#define runtime_memmove(a, b, s) __builtin_memmove((a), (b), (s))
void* runtime_mal(uintptr);
-String runtime_gostring(const byte*);
-String runtime_gostringnocopy(const byte*);
+String runtime_gostringnocopy(const byte*)
+ __asm__ (GOSYM_PREFIX "runtime.gostringnocopy");
void runtime_schedinit(void);
void runtime_initsig(bool);
void runtime_sigenable(uint32 sig);
+++ /dev/null
-// Copyright 2009, 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package runtime
-#include "runtime.h"
-#include "arch.h"
-#include "malloc.h"
-#include "go-string.h"
-
-#define charntorune(pv, str, len) __go_get_rune(str, len, pv)
-
-const String runtime_emptystring;
-
-intgo
-runtime_findnull(const byte *s)
-{
- if(s == nil)
- return 0;
- return __builtin_strlen((const char*) s);
-}
-
-intgo
-runtime_findnullw(const uint16 *s)
-{
- intgo l;
-
- if(s == nil)
- return 0;
- for(l=0; s[l]!=0; l++)
- ;
- return l;
-}
-
-static String
-gostringsize(intgo l, byte** pmem)
-{
- String s;
- byte *mem;
-
- if(l == 0) {
- *pmem = nil;
- return runtime_emptystring;
- }
- mem = runtime_mallocgc(l, 0, FlagNoScan|FlagNoZero);
- s.str = mem;
- s.len = l;
- *pmem = mem;
- return s;
-}
-
-String
-runtime_gostring(const byte *str)
-{
- intgo l;
- String s;
- byte *mem;
-
- l = runtime_findnull(str);
- s = gostringsize(l, &mem);
- runtime_memmove(mem, str, l);
- return s;
-}
-
-String
-runtime_gostringnocopy(const byte *str)
-{
- String s;
-
- s.str = str;
- s.len = runtime_findnull(str);
- return s;
-}
-
-func cstringToGo(str *byte) (s String) {
- s = runtime_gostringnocopy(str);
-}
-
-enum
-{
- Runeself = 0x80,
-};
-
-func stringiter(s String, k int) (retk int) {
- int32 l;
-
- if(k >= s.len) {
- // retk=0 is end of iteration
- retk = 0;
- goto out;
- }
-
- l = s.str[k];
- if(l < Runeself) {
- retk = k+1;
- goto out;
- }
-
- // multi-char rune
- retk = k + charntorune(&l, s.str+k, s.len-k);
-
-out:
-}
-
-func stringiter2(s String, k int) (retk int, retv int32) {
- if(k >= s.len) {
- // retk=0 is end of iteration
- retk = 0;
- retv = 0;
- goto out;
- }
-
- retv = s.str[k];
- if(retv < Runeself) {
- retk = k+1;
- goto out;
- }
-
- // multi-char rune
- retk = k + charntorune(&retv, s.str+k, s.len-k);
-
-out:
-}
projects / gcc.git / commitdiff