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-rw-r--r--erts/emulator/beam/beam_bif_load.c2
-rw-r--r--erts/emulator/beam/beam_emu.c7
-rw-r--r--erts/emulator/beam/beam_load.c17
-rw-r--r--erts/emulator/beam/big.c56
-rw-r--r--erts/emulator/beam/big.h1
-rw-r--r--erts/emulator/beam/erl_bits.c12
-rw-r--r--erts/emulator/beam/erl_unicode.c24
-rw-r--r--erts/emulator/beam/erl_vm.h2
-rw-r--r--erts/emulator/beam/utils.c105
9 files changed, 170 insertions, 56 deletions
diff --git a/erts/emulator/beam/beam_bif_load.c b/erts/emulator/beam/beam_bif_load.c
index 2561d7a630..8c1f85ea37 100644
--- a/erts/emulator/beam/beam_bif_load.c
+++ b/erts/emulator/beam/beam_bif_load.c
@@ -66,8 +66,6 @@ load_module_2(BIF_ALIST_2)
erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_smp_block_system(0);
- erts_export_consolidate();
-
hp = HAlloc(BIF_P, 3);
sz = binary_size(BIF_ARG_2);
if ((i = erts_load_module(BIF_P, 0,
diff --git a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c
index 5691f7aec1..76912ebbd6 100644
--- a/erts/emulator/beam/beam_emu.c
+++ b/erts/emulator/beam/beam_emu.c
@@ -3967,8 +3967,7 @@ void process_main(void)
* too big numbers).
*/
if (is_not_small(val) || val > make_small(0x10FFFFUL) ||
- (make_small(0xD800UL) <= val && val <= make_small(0xDFFFUL)) ||
- val == make_small(0xFFFEUL) || val == make_small(0xFFFFUL)) {
+ (make_small(0xD800UL) <= val && val <= make_small(0xDFFFUL))) {
goto badarg;
}
Next(2);
@@ -3987,8 +3986,8 @@ void process_main(void)
* the valid range).
*/
if (is_not_small(tmp_arg1) || tmp_arg1 > make_small(0x10FFFFUL) ||
- (make_small(0xD800UL) <= tmp_arg1 && tmp_arg1 <= make_small(0xDFFFUL)) ||
- tmp_arg1 == make_small(0xFFFEUL) || tmp_arg1 == make_small(0xFFFFUL)) {
+ (make_small(0xD800UL) <= tmp_arg1 &&
+ tmp_arg1 <= make_small(0xDFFFUL))) {
ErlBinMatchBuffer *mb = ms_matchbuffer(tmp_arg2);
mb->offset -= 32;
diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c
index de4b32b238..d82b5dbcac 100644
--- a/erts/emulator/beam/beam_load.c
+++ b/erts/emulator/beam/beam_load.c
@@ -758,6 +758,14 @@ bin_load(Process *c_p, ErtsProcLocks c_p_locks,
}
/*
+ * Since the literal table *may* have contained external
+ * funs (containing references to export entries), now is
+ * the time to consolidate the export tables.
+ */
+
+ erts_export_consolidate();
+
+ /*
* Load the code chunk.
*/
@@ -1570,10 +1578,15 @@ read_code_header(LoaderState* stp)
/*
* Verify the number of the highest opcode used.
*/
-
GetInt(stp, 4, opcode_max);
if (opcode_max > MAX_GENERIC_OPCODE) {
- LoadError2(stp, "use of opcode %d; this emulator supports only up to %d",
+ LoadError2(stp,
+ "This BEAM file was compiled for a later version"
+ " of the run-time system than " ERLANG_OTP_RELEASE ".\n"
+ " To fix this, please recompile this module with an "
+ ERLANG_OTP_RELEASE " compiler.\n"
+ " (Use of opcode %d; this emulator supports "
+ "only up to %d.)",
opcode_max, MAX_GENERIC_OPCODE);
}
diff --git a/erts/emulator/beam/big.c b/erts/emulator/beam/big.c
index d18de9ae5d..b90ea6b478 100644
--- a/erts/emulator/beam/big.c
+++ b/erts/emulator/beam/big.c
@@ -1584,6 +1584,62 @@ big_to_double(Wterm x, double* resp)
return 0;
}
+/*
+ * Logic has been copied from erl_bif_guard.c and slightly
+ * modified to use a static instead of dynamic heap
+ */
+Eterm
+double_to_big(double x, Eterm *heap)
+{
+ int is_negative;
+ int ds;
+ ErtsDigit* xp;
+ Eterm res;
+ int i;
+ size_t sz;
+ Eterm* hp;
+ double dbase;
+
+ if (x >= 0) {
+ is_negative = 0;
+ } else {
+ is_negative = 1;
+ x = -x;
+ }
+
+ /* Unscale & (calculate exponent) */
+ ds = 0;
+ dbase = ((double) (D_MASK) + 1);
+ while (x >= 1.0) {
+ x /= dbase; /* "shift" right */
+ ds++;
+ }
+ sz = BIG_NEED_SIZE(ds); /* number of words including arity */
+
+ hp = heap;
+ res = make_big(hp);
+ xp = (ErtsDigit*) (hp + 1);
+
+ for (i = ds - 1; i >= 0; i--) {
+ ErtsDigit d;
+
+ x *= dbase; /* "shift" left */
+ d = x; /* trunc */
+ xp[i] = d; /* store digit */
+ x -= d; /* remove integer part */
+ }
+ while ((ds & (BIG_DIGITS_PER_WORD - 1)) != 0) {
+ xp[ds++] = 0;
+ }
+
+ if (is_negative) {
+ *hp = make_neg_bignum_header(sz-1);
+ } else {
+ *hp = make_pos_bignum_header(sz-1);
+ }
+ return res;
+}
+
/*
** Estimate the number of decimal digits (include sign)
diff --git a/erts/emulator/beam/big.h b/erts/emulator/beam/big.h
index 2afc37004f..256f1c2b45 100644
--- a/erts/emulator/beam/big.h
+++ b/erts/emulator/beam/big.h
@@ -140,6 +140,7 @@ Eterm big_lshift(Eterm, Sint, Eterm*);
int big_comp (Wterm, Wterm);
int big_ucomp (Eterm, Eterm);
int big_to_double(Wterm x, double* resp);
+Eterm double_to_big(double, Eterm*);
Eterm small_to_big(Sint, Eterm*);
Eterm uint_to_big(Uint, Eterm*);
Eterm uword_to_big(UWord, Eterm*);
diff --git a/erts/emulator/beam/erl_bits.c b/erts/emulator/beam/erl_bits.c
index 326a5c136b..6f7309f493 100644
--- a/erts/emulator/beam/erl_bits.c
+++ b/erts/emulator/beam/erl_bits.c
@@ -845,8 +845,7 @@ erts_bs_put_utf8(ERL_BITS_PROTO_1(Eterm arg))
dst[1] = 0x80 | (val & 0x3F);
num_bits = 16;
} else if (val < 0x10000UL) {
- if ((0xD800 <= val && val <= 0xDFFF) ||
- val == 0xFFFE || val == 0xFFFF) {
+ if (0xD800 <= val && val <= 0xDFFF) {
return 0;
}
dst[0] = 0xE0 | (val >> 12);
@@ -886,8 +885,7 @@ erts_bs_put_utf16(ERL_BITS_PROTO_2(Eterm arg, Uint flags))
return 0;
}
val = unsigned_val(arg);
- if (val > 0x10FFFF || (0xD800 <= val && val <= 0xDFFF) ||
- val == 0xFFFE || val == 0xFFFF) {
+ if (val > 0x10FFFF || (0xD800 <= val && val <= 0xDFFF)) {
return 0;
}
@@ -1652,8 +1650,7 @@ erts_bs_get_utf8(ErlBinMatchBuffer* mb)
return THE_NON_VALUE;
}
result = (((result << 6) + a) << 6) + b - (Eterm) 0x000E2080UL;
- if ((0xD800 <= result && result <= 0xDFFF) ||
- result == 0xFFFE || result == 0xFFFF) {
+ if (0xD800 <= result && result <= 0xDFFF) {
return THE_NON_VALUE;
}
mb->offset += 24;
@@ -1723,9 +1720,6 @@ erts_bs_get_utf16(ErlBinMatchBuffer* mb, Uint flags)
w1 = (src[0] << 8) | src[1];
}
if (w1 < 0xD800 || w1 > 0xDFFF) {
- if (w1 == 0xFFFE || w1 == 0xFFFF) {
- return THE_NON_VALUE;
- }
mb->offset += 16;
return make_small(w1);
} else if (w1 > 0xDBFF) {
diff --git a/erts/emulator/beam/erl_unicode.c b/erts/emulator/beam/erl_unicode.c
index 158eb361a4..bd5f3cc4c1 100644
--- a/erts/emulator/beam/erl_unicode.c
+++ b/erts/emulator/beam/erl_unicode.c
@@ -348,12 +348,6 @@ static int copy_utf8_bin(byte *target, byte *source, Uint size,
return copied;
}
- if (((*source) == 0xEF) && (source[1] == 0xBF) &&
- ((source[2] == 0xBE) || (source[2] == 0xBF))) {
- *err_pos = source;
- return copied;
- }
-
*(target++) = *(source++);
*(target++) = *(source++);
*(target++) = *(source++);
@@ -714,9 +708,8 @@ L_Again: /* Restart with sublist, old listend was pushed on stack */
target[(*pos)++] = (((byte) (x & 0x3F)) |
((byte) 0x80));
} else if (x < 0x10000) {
- if ((x >= 0xD800 && x <= 0xDFFF) ||
- (x == 0xFFFE) ||
- (x == 0xFFFF)) { /* Invalid unicode range */
+ if (x >= 0xD800 && x <= 0xDFFF) {
+ /* Invalid unicode range */
*err = 1;
goto done;
}
@@ -1230,10 +1223,6 @@ int erts_analyze_utf8(byte *source, Uint size,
((source[1] & 0x20) != 0)) {
return ERTS_UTF8_ERROR;
}
- if (((*source) == 0xEF) && (source[1] == 0xBF) &&
- ((source[2] == 0xBE) || (source[2] == 0xBF))) {
- return ERTS_UTF8_ERROR;
- }
source += 3;
size -= 3;
} else if (((*source) & ((byte) 0xF8)) == 0xF0) {
@@ -2166,9 +2155,8 @@ L_Again: /* Restart with sublist, old listend was pushed on stack */
} else if (x < 0x800) {
need += 2;
} else if (x < 0x10000) {
- if ((x >= 0xD800 && x <= 0xDFFF) ||
- (x == 0xFFFE) ||
- (x == 0xFFFF)) { /* Invalid unicode range */
+ if (x >= 0xD800 && x <= 0xDFFF) {
+ /* Invalid unicode range */
DESTROY_ESTACK(stack);
return ((Sint) -1);
}
@@ -2314,9 +2302,7 @@ L_Again: /* Restart with sublist, old listend was pushed on stack */
*p++ = (((byte) (x & 0x3F)) |
((byte) 0x80));
} else if (x < 0x10000) {
- ASSERT(!((x >= 0xD800 && x <= 0xDFFF) ||
- (x == 0xFFFE) ||
- (x == 0xFFFF)));
+ ASSERT(!(x >= 0xD800 && x <= 0xDFFF));
*p++ = (((byte) (x >> 12)) |
((byte) 0xE0));
*p++ = ((((byte) (x >> 6)) & 0x3F) |
diff --git a/erts/emulator/beam/erl_vm.h b/erts/emulator/beam/erl_vm.h
index e7fd144ec3..f810392e60 100644
--- a/erts/emulator/beam/erl_vm.h
+++ b/erts/emulator/beam/erl_vm.h
@@ -55,7 +55,7 @@
heap data on the C stack or if we use the buffers in the scheduler data. */
#define TMP_HEAP_SIZE 128 /* Number of Eterm in the schedulers
small heap for transient heap data */
-#define CMP_TMP_HEAP_SIZE 2 /* cmp wants its own tmp-heap... */
+#define CMP_TMP_HEAP_SIZE 32 /* cmp wants its own tmp-heap... */
#define ERL_ARITH_TMP_HEAP_SIZE 4 /* as does erl_arith... */
#define BEAM_EMU_TMP_HEAP_SIZE 2 /* and beam_emu... */
diff --git a/erts/emulator/beam/utils.c b/erts/emulator/beam/utils.c
index 3f6accba2d..825cb140b2 100644
--- a/erts/emulator/beam/utils.c
+++ b/erts/emulator/beam/utils.c
@@ -2642,7 +2642,7 @@ tailrecur_ne:
FloatDef f1, f2;
Eterm big;
#if HEAP_ON_C_STACK
- Eterm big_buf[2]; /* If HEAP_ON_C_STACK */
+ Eterm big_buf[32]; /* If HEAP_ON_C_STACK */
#else
Eterm *big_buf = erts_get_scheduler_data()->cmp_tmp_heap;
#endif
@@ -2653,41 +2653,108 @@ tailrecur_ne:
Eterm aw = a;
Eterm bw = b;
#endif
+#define MAX_LOSSLESS_FLOAT ((double)((1LL << 53) - 2))
+#define MIN_LOSSLESS_FLOAT ((double)(((1LL << 53) - 2)*-1))
b_tag = tag_val_def(bw);
switch(_NUMBER_CODE(a_tag, b_tag)) {
case SMALL_BIG:
- big = small_to_big(signed_val(a), big_buf);
- j = big_comp(big, bw);
+ j = big_sign(bw) ? 1 : -1;
+ break;
+ case BIG_SMALL:
+ j = big_sign(aw) ? -1 : 1;
break;
case SMALL_FLOAT:
- f1.fd = signed_val(a);
GET_DOUBLE(bw, f2);
- j = float_comp(f1.fd, f2.fd);
- break;
- case BIG_SMALL:
- big = small_to_big(signed_val(b), big_buf);
- j = big_comp(aw, big);
+ if (f2.fd < MAX_LOSSLESS_FLOAT && f2.fd > MIN_LOSSLESS_FLOAT) {
+ // Float is within the no loss limit
+ f1.fd = signed_val(aw);
+ j = float_comp(f1.fd, f2.fd);
+#if ERTS_SIZEOF_ETERM == 8
+ } else if (f2.fd > (double) (MAX_SMALL + 1)) {
+ // Float is a positive bignum, i.e. bigger
+ j = -1;
+ } else if (f2.fd < (double) (MIN_SMALL - 1)) {
+ // Float is a negative bignum, i.e. smaller
+ j = 1;
+ } else { // Float is a Sint but less precise
+ j = signed_val(aw) - (Sint) f2.fd;
+ }
+#else
+ } else {
+ // If float is positive it is bigger than small
+ j = (f2.fd > 0.0) ? -1 : 1;
+ }
+#endif // ERTS_SIZEOF_ETERM == 8
break;
case BIG_FLOAT:
- if (big_to_double(aw, &f1.fd) < 0) {
- j = big_sign(a) ? -1 : 1;
+ GET_DOUBLE(bw, f2);
+ if ((f2.fd < (double) (MAX_SMALL + 1))
+ && (f2.fd > (double) (MIN_SMALL - 1))) {
+ // Float is a Sint
+ j = big_sign(aw) ? -1 : 1;
+ } else if ((pow(2.0,(big_arity(aw)-1.0)*D_EXP)-1.0) > fabs(f2.fd)) {
+ // If bignum size shows that it is bigger than the abs float
+ j = big_sign(aw) ? -1 : 1;
+ } else if ((pow(2.0,(big_arity(aw))*D_EXP)-1.0) < fabs(f2.fd)) {
+ // If bignum size shows that it is smaller than the abs float
+ j = f2.fd < 0 ? 1 : -1;
+ } else if (f2.fd < MAX_LOSSLESS_FLOAT && f2.fd > MIN_LOSSLESS_FLOAT) {
+ // Float is within the no loss limit
+ if (big_to_double(aw, &f1.fd) < 0) {
+ j = big_sign(aw) ? -1 : 1;
+ } else {
+ j = float_comp(f1.fd, f2.fd);
+ }
} else {
- GET_DOUBLE(bw, f2);
- j = float_comp(f1.fd, f2.fd);
+ big = double_to_big(f2.fd, big_buf);
+ j = big_comp(aw, big);
}
break;
case FLOAT_SMALL:
GET_DOUBLE(aw, f1);
- f2.fd = signed_val(b);
- j = float_comp(f1.fd, f2.fd);
+ if (f1.fd < MAX_LOSSLESS_FLOAT && f1.fd > MIN_LOSSLESS_FLOAT) {
+ // Float is within the no loss limit
+ f2.fd = signed_val(bw);
+ j = float_comp(f1.fd, f2.fd);
+#if ERTS_SIZEOF_ETERM == 8
+ } else if (f1.fd > (double) (MAX_SMALL + 1)) {
+ // Float is a positive bignum, i.e. bigger
+ j = 1;
+ } else if (f1.fd < (double) (MIN_SMALL - 1)) {
+ // Float is a negative bignum, i.e. smaller
+ j = -1;
+ } else { // Float is a Sint but less precise it
+ j = (Sint) f1.fd - signed_val(bw);
+ }
+#else
+ } else {
+ // If float is positive it is bigger than small
+ j = (f1.fd > 0.0) ? 1 : -1;
+ }
+#endif // ERTS_SIZEOF_ETERM == 8
break;
case FLOAT_BIG:
- if (big_to_double(bw, &f2.fd) < 0) {
- j = big_sign(b) ? 1 : -1;
+ GET_DOUBLE(aw, f1);
+ if ((f1.fd < (double) (MAX_SMALL + 1))
+ && (f1.fd > (double) (MIN_SMALL - 1))) { // Float is a Sint
+ j = big_sign(bw) ? 1 : -1;
+ } else if ((pow(2.0, (big_arity(bw) - 1.0) * D_EXP) - 1.0) > fabs(f1.fd)) {
+ // If bignum size shows that it is bigger than the abs float
+ j = big_sign(bw) ? 1 : -1;
+ } else if ((pow(2.0,(big_arity(bw))*D_EXP)-1.0) < fabs(f1.fd)) {
+ // If bignum size shows that it is smaller than the abs float
+ j = f1.fd < 0 ? -1 : 1;
+ } else if (f1.fd < MAX_LOSSLESS_FLOAT && f1.fd > MIN_LOSSLESS_FLOAT) {
+ // Float is within the no loss limit
+ if (big_to_double(bw, &f2.fd) < 0) {
+ j = big_sign(bw) ? 1 : -1;
+ } else {
+ j = float_comp(f1.fd, f2.fd);
+ }
} else {
- GET_DOUBLE(aw, f1);
- j = float_comp(f1.fd, f2.fd);
+ big = double_to_big(f1.fd, big_buf);
+ j = big_comp(big, bw);
}
break;
default:
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-07 10:47:11 +0000