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-rw-r--r--erts/emulator/beam/bs_instrs.tab1023
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diff --git a/erts/emulator/beam/bs_instrs.tab b/erts/emulator/beam/bs_instrs.tab
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+++ b/erts/emulator/beam/bs_instrs.tab
@@ -0,0 +1,1023 @@
+// -*- c -*-
+//
+// %CopyrightBegin%
+//
+// Copyright Ericsson AB 2017. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// %CopyrightEnd%
+//
+
+%if ARCH_64
+BS_SAFE_MUL(A, B, Fail, Dst) {
+ Uint64 res = ($A) * ($B);
+ if (res / $B != $A) {
+ $Fail;
+ }
+ $Dst = res;
+}
+%else
+BS_SAFE_MUL(A, B, Fail, Dst) {
+ Uint64 res = (Uint64)($A) * (Uint64)($B);
+ if ((res >> (8*sizeof(Uint))) != 0) {
+ $Fail;
+ }
+ $Dst = res;
+}
+%endif
+
+BS_GET_FIELD_SIZE(Bits, Unit, Fail, Dst) {
+ Sint signed_size;
+ Uint uint_size;
+ Uint temp_bits;
+
+ if (is_small($Bits)) {
+ signed_size = signed_val($Bits);
+ if (signed_size < 0) {
+ $Fail;
+ }
+ uint_size = (Uint) signed_size;
+ } else {
+ if (!term_to_Uint($Bits, &temp_bits)) {
+ $Fail;
+ }
+ uint_size = temp_bits;
+ }
+ $BS_SAFE_MUL(uint_size, $Unit, $Fail, $Dst);
+}
+
+BS_GET_UNCHECKED_FIELD_SIZE(Bits, Unit, Fail, Dst) {
+ Sint signed_size;
+ Uint uint_size;
+ Uint temp_bits;
+
+ if (is_small($Bits)) {
+ signed_size = signed_val($Bits);
+ if (signed_size < 0) {
+ $Fail;
+ }
+ uint_size = (Uint) signed_size;
+ } else {
+ if (!term_to_Uint($Bits, &temp_bits)) {
+ $Fail;
+ }
+ uint_size = temp_bits;
+ }
+ $Dst = uint_size * $Unit;
+}
+
+TEST_BIN_VHEAP(VNh, Nh, Live) {
+ Uint need = $Nh;
+ if (E - HTOP < need || MSO(c_p).overhead + $VNh >= BIN_VHEAP_SZ(c_p)) {
+ SWAPOUT;
+ PROCESS_MAIN_CHK_LOCKS(c_p);
+ FCALLS -= erts_garbage_collect_nobump(c_p, need, reg, $Live, FCALLS);
+ ERTS_VERIFY_UNUSED_TEMP_ALLOC(c_p);
+ PROCESS_MAIN_CHK_LOCKS(c_p);
+ SWAPIN;
+ }
+ HEAP_SPACE_VERIFIED(need);
+}
+
+i_bs_get_binary_all2(Fail, Ms, Live, Unit, Dst) {
+ ErlBinMatchBuffer *_mb;
+ Eterm _result;
+
+ $GC_TEST(0, ERL_SUB_BIN_SIZE, $Live);
+ _mb = ms_matchbuffer($Ms);
+ if (((_mb->size - _mb->offset) % $Unit) == 0) {
+ LIGHT_SWAPOUT;
+ _result = erts_bs_get_binary_all_2(c_p, _mb);
+ LIGHT_SWAPIN;
+ HEAP_SPACE_VERIFIED(0);
+ ASSERT(is_value(_result));
+ $Dst = _result;
+ } else {
+ HEAP_SPACE_VERIFIED(0);
+ $FAIL($Fail);
+ }
+}
+
+i_bs_get_binary2(Fail, Ms, Live, Sz, Flags, Dst) {
+ ErlBinMatchBuffer *_mb;
+ Eterm _result;
+ Uint _size;
+ $BS_GET_FIELD_SIZE($Sz, (($Flags) >> 3), $FAIL($Fail), _size);
+ $GC_TEST(0, ERL_SUB_BIN_SIZE, $Live);
+ _mb = ms_matchbuffer($Ms);
+ LIGHT_SWAPOUT;
+ _result = erts_bs_get_binary_2(c_p, _size, $Flags, _mb);
+ LIGHT_SWAPIN;
+ HEAP_SPACE_VERIFIED(0);
+ if (is_non_value(_result)) {
+ $FAIL($Fail);
+ } else {
+ $Dst = _result;
+ }
+}
+
+i_bs_get_binary_imm2(Fail, Ms, Live, Sz, Flags, Dst) {
+ ErlBinMatchBuffer *_mb;
+ Eterm _result;
+ $GC_TEST(0, heap_bin_size(ERL_ONHEAP_BIN_LIMIT), $Live);
+ _mb = ms_matchbuffer($Ms);
+ LIGHT_SWAPOUT;
+ _result = erts_bs_get_binary_2(c_p, $Sz, $Flags, _mb);
+ LIGHT_SWAPIN;
+ HEAP_SPACE_VERIFIED(0);
+ if (is_non_value(_result)) {
+ $FAIL($Fail);
+ } else {
+ $Dst = _result;
+ }
+}
+
+i_bs_get_float2(Fail, Ms, Live, Sz, Flags, Dst) {
+ ErlBinMatchBuffer *_mb;
+ Eterm _result;
+ Sint _size;
+
+ if (!is_small($Sz) || (_size = unsigned_val($Sz)) > 64) {
+ $FAIL($Fail);
+ }
+ _size *= (($Flags) >> 3);
+ $GC_TEST(0, FLOAT_SIZE_OBJECT, $Live);
+ _mb = ms_matchbuffer($Ms);
+ LIGHT_SWAPOUT;
+ _result = erts_bs_get_float_2(c_p, _size, ($Flags), _mb);
+ LIGHT_SWAPIN;
+ HEAP_SPACE_VERIFIED(0);
+ if (is_non_value(_result)) {
+ $FAIL($Fail);
+ } else {
+ $Dst = _result;
+ }
+}
+
+i_bs_skip_bits2(Fail, Ms, Bits, Unit) {
+ ErlBinMatchBuffer *_mb;
+ size_t new_offset;
+ Uint _size;
+
+ _mb = ms_matchbuffer($Ms);
+ $BS_GET_FIELD_SIZE($Bits, $Unit, $FAIL($Fail), _size);
+ new_offset = _mb->offset + _size;
+ if (new_offset <= _mb->size) {
+ _mb->offset = new_offset;
+ } else {
+ $FAIL($Fail);
+ }
+}
+
+i_bs_skip_bits_all2(Fail, Ms, Unit) {
+ ErlBinMatchBuffer *_mb;
+ _mb = ms_matchbuffer($Ms);
+ if (((_mb->size - _mb->offset) % $Unit) == 0) {
+ _mb->offset = _mb->size;
+ } else {
+ $FAIL($Fail);
+ }
+}
+
+i_bs_skip_bits_imm2(Fail, Ms, Bits) {
+ ErlBinMatchBuffer *_mb;
+ size_t new_offset;
+ _mb = ms_matchbuffer($Ms);
+ new_offset = _mb->offset + ($Bits);
+ if (new_offset <= _mb->size) {
+ _mb->offset = new_offset;
+ } else {
+ $FAIL($Fail);
+ }
+}
+
+i_new_bs_put_binary(Fail, Sz, Flags, Src) {
+ Sint _size;
+ $BS_GET_UNCHECKED_FIELD_SIZE($Sz, (($Flags) >> 3), $BADARG($Fail), _size);
+ if (!erts_new_bs_put_binary(ERL_BITS_ARGS_2(($Src), _size))) {
+ $BADARG($Fail);
+ }
+}
+
+i_new_bs_put_binary_all(Fail, Src, Unit) {
+ if (!erts_new_bs_put_binary_all(ERL_BITS_ARGS_2(($Src), ($Unit)))) {
+ $BADARG($Fail);
+ }
+}
+
+i_new_bs_put_binary_imm(Fail, Sz, Src) {
+ if (!erts_new_bs_put_binary(ERL_BITS_ARGS_2(($Src), ($Sz)))) {
+ $BADARG($Fail);
+ }
+}
+
+i_new_bs_put_float(Fail, Sz, Flags, Src) {
+ Sint _size;
+ $BS_GET_UNCHECKED_FIELD_SIZE($Sz, (($Flags) >> 3), $BADARG($Fail), _size);
+ if (!erts_new_bs_put_float(c_p, ($Src), _size, ($Flags))) {
+ $BADARG($Fail);
+ }
+}
+
+i_new_bs_put_float_imm(Fail, Sz, Flags, Src) {
+ if (!erts_new_bs_put_float(c_p, ($Src), ($Sz), ($Flags))) {
+ $BADARG($Fail);
+ }
+}
+
+i_new_bs_put_integer(Fail, Sz, Flags, Src) {
+ Sint _size;
+ $BS_GET_UNCHECKED_FIELD_SIZE($Sz, (($Flags) >> 3), $BADARG($Fail), _size);
+ if (!erts_new_bs_put_integer(ERL_BITS_ARGS_3(($Src), _size, ($Flags)))) {
+ $BADARG($Fail);
+ }
+}
+
+i_new_bs_put_integer_imm(Fail, Sz, Flags, Src) {
+ if (!erts_new_bs_put_integer(ERL_BITS_ARGS_3(($Src), ($Sz), ($Flags)))) {
+ $BADARG($Fail);
+ }
+}
+
+#
+# i_bs_init*
+#
+
+i_bs_init_fail_heap := bs_init.fail_heap.verify.execute;
+i_bs_init_fail := bs_init.fail.verify.execute;
+i_bs_init := bs_init.plain.execute;
+i_bs_init_heap := bs_init.heap.execute;
+
+bs_init.head() {
+ Eterm BsOp1;
+ Eterm BsOp2;
+}
+
+bs_init.fail_heap(Size, HeapAlloc) {
+ BsOp1 = $Size;
+ BsOp2 = $HeapAlloc;
+}
+
+bs_init.fail(Size) {
+ BsOp1 = $Size;
+ BsOp2 = 0;
+}
+
+bs_init.plain(Size) {
+ BsOp1 = $Size;
+ BsOp2 = 0;
+}
+
+bs_init.heap(Size, HeapAlloc) {
+ BsOp1 = $Size;
+ BsOp2 = $HeapAlloc;
+}
+
+bs_init.verify(Fail) {
+ if (is_small(BsOp1)) {
+ Sint size = signed_val(BsOp1);
+ if (size < 0) {
+ $BADARG($Fail);
+ }
+ BsOp1 = (Eterm) size;
+ } else {
+ Uint bytes;
+
+ if (!term_to_Uint(BsOp1, &bytes)) {
+ c_p->freason = bytes;
+ $FAIL_HEAD_OR_BODY($Fail);
+ }
+ if ((bytes >> (8*sizeof(Uint)-3)) != 0) {
+ $SYSTEM_LIMIT($Fail);
+ }
+ BsOp1 = (Eterm) bytes;
+ }
+}
+
+bs_init.execute(Live, Dst) {
+ if (BsOp1 <= ERL_ONHEAP_BIN_LIMIT) {
+ ErlHeapBin* hb;
+ Uint bin_need;
+
+ bin_need = heap_bin_size(BsOp1);
+ erts_bin_offset = 0;
+ erts_writable_bin = 0;
+ $GC_TEST(0, bin_need+BsOp2+ERL_SUB_BIN_SIZE, $Live);
+ hb = (ErlHeapBin *) HTOP;
+ HTOP += bin_need;
+ hb->thing_word = header_heap_bin(BsOp1);
+ hb->size = BsOp1;
+ erts_current_bin = (byte *) hb->data;
+ $Dst = make_binary(hb);
+ } else {
+ Binary* bptr;
+ ProcBin* pb;
+
+ erts_bin_offset = 0;
+ erts_writable_bin = 0;
+ $TEST_BIN_VHEAP(BsOp1 / sizeof(Eterm),
+ BsOp2 + PROC_BIN_SIZE + ERL_SUB_BIN_SIZE, $Live);
+
+ /*
+ * Allocate the binary struct itself.
+ */
+ bptr = erts_bin_nrml_alloc(BsOp1);
+ erts_current_bin = (byte *) bptr->orig_bytes;
+
+ /*
+ * Now allocate the ProcBin on the heap.
+ */
+ pb = (ProcBin *) HTOP;
+ HTOP += PROC_BIN_SIZE;
+ pb->thing_word = HEADER_PROC_BIN;
+ pb->size = BsOp1;
+ pb->next = MSO(c_p).first;
+ MSO(c_p).first = (struct erl_off_heap_header*) pb;
+ pb->val = bptr;
+ pb->bytes = (byte*) bptr->orig_bytes;
+ pb->flags = 0;
+
+ OH_OVERHEAD(&(MSO(c_p)), BsOp1 / sizeof(Eterm));
+
+ $Dst = make_binary(pb);
+ }
+}
+
+#
+# i_bs_init_bits*
+#
+
+i_bs_init_bits := bs_init_bits.plain.execute;
+i_bs_init_bits_heap := bs_init_bits.heap.execute;
+i_bs_init_bits_fail := bs_init_bits.fail.verify.execute;
+i_bs_init_bits_fail_heap := bs_init_bits.fail_heap.verify.execute;
+
+bs_init_bits.head() {
+ Eterm new_binary;
+ Eterm num_bits_term;
+ Uint num_bits;
+ Uint alloc;
+ Uint num_bytes;
+}
+
+bs_init_bits.plain(NumBits) {
+ num_bits = $NumBits;
+ alloc = 0;
+}
+
+bs_init_bits.heap(NumBits, Alloc) {
+ num_bits = $NumBits;
+ alloc = $Alloc;
+}
+
+bs_init_bits.fail(NumBitsTerm) {
+ num_bits_term = $NumBitsTerm;
+ alloc = 0;
+}
+
+bs_init_bits.fail_heap(NumBitsTerm, Alloc) {
+ num_bits_term = $NumBitsTerm;
+ alloc = $Alloc;
+}
+
+bs_init_bits.verify(Fail) {
+ if (is_small(num_bits_term)) {
+ Sint size = signed_val(num_bits_term);
+ if (size < 0) {
+ $BADARG($Fail);
+ }
+ num_bits = (Uint) size;
+ } else {
+ Uint bits;
+
+ if (!term_to_Uint(num_bits_term, &bits)) {
+ c_p->freason = bits;
+ $FAIL_HEAD_OR_BODY($Fail);
+ }
+ num_bits = (Uint) bits;
+ }
+}
+
+bs_init_bits.execute(Live, Dst) {
+ num_bytes = ((Uint64)num_bits+(Uint64)7) >> 3;
+ if (num_bits & 7) {
+ alloc += ERL_SUB_BIN_SIZE;
+ }
+ if (num_bytes <= ERL_ONHEAP_BIN_LIMIT) {
+ alloc += heap_bin_size(num_bytes);
+ } else {
+ alloc += PROC_BIN_SIZE;
+ }
+ $test_heap(alloc, $Live);
+
+ /* num_bits = Number of bits to build
+ * num_bytes = Number of bytes to allocate in the binary
+ * alloc = Total number of words to allocate on heap
+ * Operands: NotUsed NotUsed Dst
+ */
+ if (num_bytes <= ERL_ONHEAP_BIN_LIMIT) {
+ ErlHeapBin* hb;
+
+ erts_bin_offset = 0;
+ erts_writable_bin = 0;
+ hb = (ErlHeapBin *) HTOP;
+ HTOP += heap_bin_size(num_bytes);
+ hb->thing_word = header_heap_bin(num_bytes);
+ hb->size = num_bytes;
+ erts_current_bin = (byte *) hb->data;
+ new_binary = make_binary(hb);
+
+ do_bits_sub_bin:
+ if (num_bits & 7) {
+ ErlSubBin* sb;
+
+ sb = (ErlSubBin *) HTOP;
+ HTOP += ERL_SUB_BIN_SIZE;
+ sb->thing_word = HEADER_SUB_BIN;
+ sb->size = num_bytes - 1;
+ sb->bitsize = num_bits & 7;
+ sb->offs = 0;
+ sb->bitoffs = 0;
+ sb->is_writable = 0;
+ sb->orig = new_binary;
+ new_binary = make_binary(sb);
+ }
+ HEAP_SPACE_VERIFIED(0);
+ $Dst = new_binary;
+ } else {
+ Binary* bptr;
+ ProcBin* pb;
+
+ erts_bin_offset = 0;
+ erts_writable_bin = 0;
+
+ /*
+ * Allocate the binary struct itself.
+ */
+ bptr = erts_bin_nrml_alloc(num_bytes);
+ erts_current_bin = (byte *) bptr->orig_bytes;
+
+ /*
+ * Now allocate the ProcBin on the heap.
+ */
+ pb = (ProcBin *) HTOP;
+ HTOP += PROC_BIN_SIZE;
+ pb->thing_word = HEADER_PROC_BIN;
+ pb->size = num_bytes;
+ pb->next = MSO(c_p).first;
+ MSO(c_p).first = (struct erl_off_heap_header*) pb;
+ pb->val = bptr;
+ pb->bytes = (byte*) bptr->orig_bytes;
+ pb->flags = 0;
+ OH_OVERHEAD(&(MSO(c_p)), pb->size / sizeof(Eterm));
+ new_binary = make_binary(pb);
+ goto do_bits_sub_bin;
+ }
+}
+
+bs_add(Fail, Src1, Src2, Unit, Dst) {
+ Eterm Op1 = $Src1;
+ Eterm Op2 = $Src2;
+ Uint unit = $Unit;
+
+ if (is_both_small(Op1, Op2)) {
+ Sint Arg1 = signed_val(Op1);
+ Sint Arg2 = signed_val(Op2);
+
+ if (Arg1 >= 0 && Arg2 >= 0) {
+ $BS_SAFE_MUL(Arg2, unit, $SYSTEM_LIMIT($Fail), Op1);
+ Op1 += Arg1;
+
+ store_bs_add_result:
+ if (Op1 <= MAX_SMALL) {
+ Op1 = make_small(Op1);
+ } else {
+ /*
+ * May generate a heap fragment, but in this
+ * particular case it is OK, since the value will be
+ * stored into an x register (the GC will scan x
+ * registers for references to heap fragments) and
+ * there is no risk that value can be stored into a
+ * location that is not scanned for heap-fragment
+ * references (such as the heap).
+ */
+ SWAPOUT;
+ Op1 = erts_make_integer(Op1, c_p);
+ HTOP = HEAP_TOP(c_p);
+ }
+ $Dst = Op1;
+ $NEXT0();
+ }
+ $BADARG($Fail);
+ } else {
+ Uint a;
+ Uint b;
+ Uint c;
+
+ /*
+ * Now we know that one of the arguments is
+ * not a small. We must convert both arguments
+ * to Uints and check for errors at the same time.
+ *
+ * Error checking is tricky.
+ *
+ * If one of the arguments is not numeric or
+ * not positive, the error reason is BADARG.
+ *
+ * Otherwise if both arguments are numeric,
+ * but at least one argument does not fit in
+ * an Uint, the reason is SYSTEM_LIMIT.
+ */
+
+ if (!term_to_Uint(Op1, &a)) {
+ if (a == BADARG) {
+ $BADARG($Fail);
+ }
+ if (!term_to_Uint(Op2, &b)) {
+ c_p->freason = b;
+ $FAIL_HEAD_OR_BODY($Fail);
+ }
+ $SYSTEM_LIMIT($Fail);
+ } else if (!term_to_Uint(Op2, &b)) {
+ c_p->freason = b;
+ $FAIL_HEAD_OR_BODY($Fail);
+ }
+
+ /*
+ * The arguments are now correct and stored in a and b.
+ */
+
+ $BS_SAFE_MUL(b, unit, $SYSTEM_LIMIT($Fail), c);
+ Op1 = a + c;
+ if (Op1 < a) {
+ /*
+ * If the result is less than one of the
+ * arguments, there must have been an overflow.
+ */
+ $SYSTEM_LIMIT($Fail);
+ }
+ goto store_bs_add_result;
+ }
+ /* No fallthrough */
+ ASSERT(0);
+}
+
+bs_put_string(Len, Ptr) {
+ erts_new_bs_put_string(ERL_BITS_ARGS_2((byte *) $Ptr, $Len));
+}
+
+i_bs_append(Fail, ExtraHeap, Live, Unit, Size, Dst) {
+ Uint live = $Live;
+ Uint res;
+
+ HEAVY_SWAPOUT;
+ reg[live] = x(SCRATCH_X_REG);
+ res = erts_bs_append(c_p, reg, live, $Size, $ExtraHeap, $Unit);
+ HEAVY_SWAPIN;
+ if (is_non_value(res)) {
+ /* c_p->freason is already set (to BADARG or SYSTEM_LIMIT). */
+ $FAIL_HEAD_OR_BODY($Fail);
+ }
+ $Dst = res;
+}
+
+i_bs_private_append(Fail, Unit, Size, Src, Dst) {
+ Eterm res;
+
+ res = erts_bs_private_append(c_p, $Src, $Size, $Unit);
+ if (is_non_value(res)) {
+ /* c_p->freason is already set (to BADARG or SYSTEM_LIMIT). */
+ $FAIL_HEAD_OR_BODY($Fail);
+ }
+ $Dst = res;
+}
+
+bs_init_writable() {
+ HEAVY_SWAPOUT;
+ r(0) = erts_bs_init_writable(c_p, r(0));
+ HEAVY_SWAPIN;
+}
+
+i_bs_utf8_size(Src, Dst) {
+ Eterm arg = $Src;
+ Eterm result;
+
+ /*
+ * Calculate the number of bytes needed to encode the source
+ * operand to UTF-8. If the source operand is invalid (e.g. wrong
+ * type or range) we return a nonsense integer result (0 or 4). We
+ * can get away with that because we KNOW that bs_put_utf8 will do
+ * full error checking.
+ */
+
+ if (arg < make_small(0x80UL)) {
+ result = make_small(1);
+ } else if (arg < make_small(0x800UL)) {
+ result = make_small(2);
+ } else if (arg < make_small(0x10000UL)) {
+ result = make_small(3);
+ } else {
+ result = make_small(4);
+ }
+ $Dst = result;
+}
+
+i_bs_put_utf8(Fail, Src) {
+ if (!erts_bs_put_utf8(ERL_BITS_ARGS_1($Src))) {
+ $BADARG($Fail);
+ }
+}
+
+i_bs_utf16_size(Src, Dst) {
+ Eterm arg = $Src;
+ Eterm result = make_small(2);
+
+ /*
+ * Calculate the number of bytes needed to encode the source
+ * operarand to UTF-16. If the source operand is invalid (e.g. wrong
+ * type or range) we return a nonsense integer result (2 or 4). We
+ * can get away with that because we KNOW that bs_put_utf16 will do
+ * full error checking.
+ */
+
+ if (arg >= make_small(0x10000UL)) {
+ result = make_small(4);
+ }
+ $Dst = result;
+}
+
+bs_put_utf16(Fail, Flags, Src) {
+ if (!erts_bs_put_utf16(ERL_BITS_ARGS_2($Src, $Flags))) {
+ $BADARG($Fail);
+ }
+}
+
+// Validate a value about to be stored in a binary.
+i_bs_validate_unicode(Fail, Src) {
+ Eterm val = $Src;
+
+ /*
+ * There is no need to untag the integer, but it IS necessary
+ * to make sure it is small (if the term is a bignum, it could
+ * slip through the test, and there is no further test that
+ * would catch it, since bit syntax construction silently masks
+ * too big numbers).
+ */
+ if (is_not_small(val) || val > make_small(0x10FFFFUL) ||
+ (make_small(0xD800UL) <= val && val <= make_small(0xDFFFUL))) {
+ $BADARG($Fail);
+ }
+}
+
+// Validate a value that has been matched out.
+i_bs_validate_unicode_retract(Fail, Src, Ms) {
+ /*
+ * There is no need to untag the integer, but it IS necessary
+ * to make sure it is small (a bignum pointer could fall in
+ * the valid range).
+ */
+
+ Eterm i = $Src;
+ if (is_not_small(i) || i > make_small(0x10FFFFUL) ||
+ (make_small(0xD800UL) <= i && i <= make_small(0xDFFFUL))) {
+ Eterm ms = $Ms; /* Match context */
+ ErlBinMatchBuffer* mb;
+
+ /* Invalid value. Retract the position in the binary. */
+ mb = ms_matchbuffer(ms);
+ mb->offset -= 32;
+ $BADARG($Fail);
+ }
+}
+
+
+//
+// Matching of binaries.
+//
+
+i_bs_start_match2 := bs_start_match.fetch.execute;
+
+bs_start_match.head() {
+ Uint slots;
+ Uint live;
+ Eterm header;
+ Eterm context;
+}
+
+bs_start_match.fetch(Src) {
+ context = $Src;
+}
+
+bs_start_match.execute(Fail, Live, Slots, Dst) {
+ if (!is_boxed(context)) {
+ $FAIL($Fail);
+ }
+ header = *boxed_val(context);
+ slots = $Slots;
+ live = $Live;
+ if (header_is_bin_matchstate(header)) {
+ ErlBinMatchState* ms = (ErlBinMatchState *) boxed_val(context);
+ Uint actual_slots = HEADER_NUM_SLOTS(header);
+ ms->save_offset[0] = ms->mb.offset;
+ if (actual_slots < slots) {
+ ErlBinMatchState* dst;
+ Uint live = $Live;
+ Uint wordsneeded = ERL_BIN_MATCHSTATE_SIZE(slots);
+
+ $GC_TEST_PRESERVE(wordsneeded, live, context);
+ ms = (ErlBinMatchState *) boxed_val(context);
+ dst = (ErlBinMatchState *) HTOP;
+ *dst = *ms;
+ *HTOP = HEADER_BIN_MATCHSTATE(slots);
+ HTOP += wordsneeded;
+ HEAP_SPACE_VERIFIED(0);
+ $Dst = make_matchstate(dst);
+ }
+ } else if (is_binary_header(header)) {
+ Eterm result;
+ Uint wordsneeded = ERL_BIN_MATCHSTATE_SIZE(slots);
+ $GC_TEST_PRESERVE(wordsneeded, live, context);
+ HEAP_TOP(c_p) = HTOP;
+#ifdef DEBUG
+ c_p->stop = E; /* Needed for checking in HeapOnlyAlloc(). */
+#endif
+ result = erts_bs_start_match_2(c_p, context, slots);
+ HTOP = HEAP_TOP(c_p);
+ HEAP_SPACE_VERIFIED(0);
+ if (is_non_value(result)) {
+ $FAIL($Fail);
+ }
+ $Dst = result;
+ } else {
+ $FAIL($Fail);
+ }
+}
+
+bs_test_zero_tail2(Fail, Ctx) {
+ ErlBinMatchBuffer *_mb;
+ _mb = (ErlBinMatchBuffer*) ms_matchbuffer($Ctx);
+ if (_mb->size != _mb->offset) {
+ $FAIL($Fail);
+ }
+}
+
+bs_test_tail_imm2(Fail, Ctx, Offset) {
+ ErlBinMatchBuffer *_mb;
+ _mb = ms_matchbuffer($Ctx);
+ if (_mb->size - _mb->offset != $Offset) {
+ $FAIL($Fail);
+ }
+}
+
+bs_test_unit(Fail, Ctx, Unit) {
+ ErlBinMatchBuffer *_mb;
+ _mb = ms_matchbuffer($Ctx);
+ if ((_mb->size - _mb->offset) % $Unit) {
+ $FAIL($Fail);
+ }
+}
+
+bs_test_unit8(Fail, Ctx) {
+ ErlBinMatchBuffer *_mb;
+ _mb = ms_matchbuffer($Ctx);
+ if ((_mb->size - _mb->offset) & 7) {
+ $FAIL($Fail);
+ }
+}
+
+i_bs_get_integer_8(Ctx, Fail, Dst) {
+ Eterm _result;
+ ErlBinMatchBuffer* _mb = ms_matchbuffer($Ctx);
+
+ if (_mb->size - _mb->offset < 8) {
+ $FAIL($Fail);
+ }
+ if (BIT_OFFSET(_mb->offset) != 0) {
+ _result = erts_bs_get_integer_2(c_p, 8, 0, _mb);
+ } else {
+ _result = make_small(_mb->base[BYTE_OFFSET(_mb->offset)]);
+ _mb->offset += 8;
+ }
+ $Dst = _result;
+}
+
+i_bs_get_integer_16(Ctx, Fail, Dst) {
+ Eterm _result;
+ ErlBinMatchBuffer* _mb = ms_matchbuffer($Ctx);
+
+ if (_mb->size - _mb->offset < 16) {
+ $FAIL($Fail);
+ }
+ if (BIT_OFFSET(_mb->offset) != 0) {
+ _result = erts_bs_get_integer_2(c_p, 16, 0, _mb);
+ } else {
+ _result = make_small(get_int16(_mb->base+BYTE_OFFSET(_mb->offset)));
+ _mb->offset += 16;
+ }
+ $Dst = _result;
+}
+
+%if ARCH_64
+i_bs_get_integer_32(Ctx, Fail, Dst) {
+ Uint32 _integer;
+ ErlBinMatchBuffer* _mb = ms_matchbuffer($Ctx);
+
+ if (_mb->size - _mb->offset < 32) {
+ $FAIL($Fail);
+ }
+ if (BIT_OFFSET(_mb->offset) != 0) {
+ _integer = erts_bs_get_unaligned_uint32(_mb);
+ } else {
+ _integer = get_int32(_mb->base + _mb->offset/8);
+ }
+ _mb->offset += 32;
+ $Dst = make_small(_integer);
+}
+%endif
+
+i_bs_get_integer_imm := bs_get_integer.fetch.execute;
+i_bs_get_integer_small_imm := bs_get_integer.fetch_small.execute;
+
+bs_get_integer.head() {
+ Eterm Ms, Sz;
+}
+
+bs_get_integer.fetch(Ctx, Size, Live) {
+ Uint wordsneeded;
+ Ms = $Ctx;
+ Sz = $Size;
+ wordsneeded = 1+WSIZE(NBYTES(Sz));
+ $GC_TEST_PRESERVE(wordsneeded, $Live, Ms);
+}
+
+bs_get_integer.fetch_small(Ctx, Size) {
+ Ms = $Ctx;
+ Sz = $Size;
+}
+
+bs_get_integer.execute(Fail, Flags, Dst) {
+ ErlBinMatchBuffer* mb;
+ Eterm result;
+
+ mb = ms_matchbuffer(Ms);
+ LIGHT_SWAPOUT;
+ result = erts_bs_get_integer_2(c_p, Sz, $Flags, mb);
+ LIGHT_SWAPIN;
+ HEAP_SPACE_VERIFIED(0);
+ if (is_non_value(result)) {
+ $FAIL($Fail);
+ }
+ $Dst = result;
+}
+
+i_bs_get_integer(Fail, Live, FlagsAndUnit, Ms, Sz, Dst) {
+ Uint flags;
+ Uint size;
+ Eterm ms;
+ ErlBinMatchBuffer* mb;
+ Eterm result;
+
+ flags = $FlagsAndUnit;
+ ms = $Ms;
+ $BS_GET_FIELD_SIZE($Sz, (flags >> 3), $FAIL($Fail), size);
+ if (size >= SMALL_BITS) {
+ Uint wordsneeded;
+ /* Check bits size before potential gc.
+ * We do not want a gc and then realize we don't need
+ * the allocated space (i.e. if the op fails).
+ *
+ * Remember to re-acquire the matchbuffer after gc.
+ */
+
+ mb = ms_matchbuffer(ms);
+ if (mb->size - mb->offset < size) {
+ $FAIL($Fail);
+ }
+ wordsneeded = 1+WSIZE(NBYTES((Uint) size));
+ $GC_TEST_PRESERVE(wordsneeded, $Live, ms);
+ }
+ mb = ms_matchbuffer(ms);
+ LIGHT_SWAPOUT;
+ result = erts_bs_get_integer_2(c_p, size, flags, mb);
+ LIGHT_SWAPIN;
+ HEAP_SPACE_VERIFIED(0);
+ if (is_non_value(result)) {
+ $FAIL($Fail);
+ }
+ $Dst = result;
+}
+
+i_bs_get_utf8(Ctx, Fail, Dst) {
+ ErlBinMatchBuffer* mb = ms_matchbuffer($Ctx);
+ Eterm result = erts_bs_get_utf8(mb);
+
+ if (is_non_value(result)) {
+ $FAIL($Fail);
+ }
+ $Dst = result;
+}
+
+i_bs_get_utf16(Ctx, Fail, Flags, Dst) {
+ ErlBinMatchBuffer* mb = ms_matchbuffer($Ctx);
+ Eterm result = erts_bs_get_utf16(mb, $Flags);
+
+ if (is_non_value(result)) {
+ $FAIL($Fail);
+ }
+ $Dst = result;
+}
+
+bs_context_to_binary := ctx_to_bin.fetch.execute;
+i_bs_get_binary_all_reuse := ctx_to_bin.fetch_bin.execute;
+
+ctx_to_bin.head() {
+ Eterm context;
+ ErlBinMatchBuffer* mb;
+ ErlSubBin* sb;
+ Uint size;
+ Uint offs;
+ Uint orig;
+ Uint hole_size;
+}
+
+ctx_to_bin.fetch(Src) {
+ context = $Src;
+ if (is_boxed(context) &&
+ header_is_bin_matchstate(*boxed_val(context))) {
+ ErlBinMatchState* ms;
+ ms = (ErlBinMatchState *) boxed_val(context);
+ mb = &ms->mb;
+ offs = ms->save_offset[0];
+ size = mb->size - offs;
+ } else {
+ $NEXT0();
+ }
+}
+
+ctx_to_bin.fetch_bin(Src, Fail, Unit) {
+ context = $Src;
+ mb = ms_matchbuffer(context);
+ size = mb->size - mb->offset;
+ if (size % $Unit != 0) {
+ $FAIL($Fail);
+ }
+ offs = mb->offset;
+}
+
+ctx_to_bin.execute() {
+ orig = mb->orig;
+ sb = (ErlSubBin *) boxed_val(context);
+ hole_size = 1 + header_arity(sb->thing_word) - ERL_SUB_BIN_SIZE;
+ sb->thing_word = HEADER_SUB_BIN;
+ sb->size = BYTE_OFFSET(size);
+ sb->bitsize = BIT_OFFSET(size);
+ sb->offs = BYTE_OFFSET(offs);
+ sb->bitoffs = BIT_OFFSET(offs);
+ sb->is_writable = 0;
+ sb->orig = orig;
+ if (hole_size) {
+ sb[1].thing_word = make_pos_bignum_header(hole_size-1);
+ }
+}
+
+i_bs_match_string(Ctx, Fail, Bits, Ptr) {
+ byte* bytes = (byte *) $Ptr;
+ Uint bits = $Bits;
+ ErlBinMatchBuffer* mb;
+ Uint offs;
+
+ mb = ms_matchbuffer($Ctx);
+ if (mb->size - mb->offset < bits) {
+ $FAIL($Fail);
+ }
+ offs = mb->offset & 7;
+ if (offs == 0 && (bits & 7) == 0) {
+ if (sys_memcmp(bytes, mb->base+(mb->offset>>3), bits>>3)) {
+ $FAIL($Fail);
+ }
+ } else if (erts_cmp_bits(bytes, 0, mb->base+(mb->offset>>3), mb->offset & 7, bits)) {
+ $FAIL($Fail);
+ }
+ mb->offset += bits;
+}
+
+i_bs_save2(Src, Slot) {
+ ErlBinMatchState* _ms = (ErlBinMatchState*) boxed_val((Eterm) $Src);
+ _ms->save_offset[$Slot] = _ms->mb.offset;
+}
+
+i_bs_restore2(Src, Slot) {
+ ErlBinMatchState* _ms = (ErlBinMatchState*) boxed_val((Eterm) $Src);
+ _ms->mb.offset = _ms->save_offset[$Slot];
+}