6 #include "fmt/format.h"
10 void factor_vm::primitive_bignum_to_fixnum() {
11 ctx->replace(tag_fixnum(bignum_to_fixnum(untag<bignum>(ctx->peek()))));
14 void factor_vm::primitive_bignum_to_fixnum_strict() {
15 ctx->replace(tag_fixnum(bignum_to_fixnum_strict(untag<bignum>(ctx->peek()))));
18 void factor_vm::primitive_float_to_fixnum() {
19 ctx->replace(tag_fixnum(float_to_fixnum(ctx->peek())));
22 // does not allocate, even though from_signed_cell can allocate
23 // Division can only overflow when we are dividing the most negative fixnum
25 void factor_vm::primitive_fixnum_divint() {
26 fixnum y = untag_fixnum(ctx->pop());
27 fixnum x = untag_fixnum(ctx->peek());
28 fixnum result = x / y;
29 if (result == -fixnum_min)
31 ctx->replace(from_signed_cell(-fixnum_min));
33 ctx->replace(tag_fixnum(result));
36 // does not allocate, even though from_signed_cell can allocate
37 void factor_vm::primitive_fixnum_divmod() {
38 cell* s0 = (cell*)(ctx->datastack);
39 cell* s1 = (cell*)(ctx->datastack - sizeof(cell));
40 fixnum y = untag_fixnum(*s0);
41 fixnum x = untag_fixnum(*s1);
42 if (y == -1 && x == fixnum_min) {
44 *s1 = from_signed_cell(-fixnum_min);
47 *s1 = tag_fixnum(x / y);
48 *s0 = tag_fixnum(x % y);
53 // If we're shifting right by n bits, we won't overflow as long as none of the
54 // high WORD_SIZE-TAG_BITS-n bits are set.
55 inline fixnum factor_vm::sign_mask(fixnum x) {
56 return x >> (WORD_SIZE - 1);
59 inline fixnum factor_vm::branchless_max(fixnum x, fixnum y) {
60 return (x - ((x - y) & sign_mask(x - y)));
63 inline fixnum factor_vm::branchless_abs(fixnum x) {
64 return (x ^ sign_mask(x)) - sign_mask(x);
68 void factor_vm::primitive_fixnum_shift() {
69 fixnum y = untag_fixnum(ctx->pop());
70 fixnum x = untag_fixnum(ctx->peek());
75 y = branchless_max(y, -WORD_SIZE + 1);
76 ctx->replace(tag_fixnum(x >> -y));
78 } else if (y < WORD_SIZE - TAG_BITS) {
79 fixnum mask = -((fixnum)1 << (WORD_SIZE - 1 - TAG_BITS - y));
80 if (!(branchless_abs(x) & mask)) {
81 ctx->replace(tag_fixnum(x << y));
86 ctx->replace(tag<bignum>(bignum_arithmetic_shift(fixnum_to_bignum(x), y)));
90 void factor_vm::primitive_fixnum_to_bignum() {
91 ctx->replace(tag<bignum>(fixnum_to_bignum(untag_fixnum(ctx->peek()))));
95 void factor_vm::primitive_float_to_bignum() {
96 ctx->replace(tag<bignum>(float_to_bignum(ctx->peek())));
99 #define POP_BIGNUMS(x, y) \
100 bignum* y = untag<bignum>(ctx->pop()); \
101 bignum* x = untag<bignum>(ctx->peek());
103 void factor_vm::primitive_bignum_eq() {
105 ctx->replace(tag_boolean(bignum_equal_p(x, y)));
109 void factor_vm::primitive_bignum_add() {
111 ctx->replace(tag<bignum>(bignum_add(x, y)));
115 void factor_vm::primitive_bignum_subtract() {
117 ctx->replace(tag<bignum>(bignum_subtract(x, y)));
121 void factor_vm::primitive_bignum_multiply() {
123 ctx->replace(tag<bignum>(bignum_multiply(x, y)));
127 void factor_vm::primitive_bignum_divint() {
129 ctx->replace(tag<bignum>(bignum_quotient(x, y)));
133 void factor_vm::primitive_bignum_divmod() {
134 cell* s0 = (cell*)(ctx->datastack);
135 cell* s1 = (cell*)(ctx->datastack - sizeof(cell));
136 bignum* y = untag<bignum>(*s0);
137 bignum* x = untag<bignum>(*s1);
139 bignum_divide(x, y, &q, &r);
140 *s1 = tag<bignum>(q);
141 *s0 = bignum_maybe_to_fixnum(r);
144 void factor_vm::primitive_bignum_mod() {
146 cell val = bignum_maybe_to_fixnum(bignum_remainder(x, y));
150 void factor_vm::primitive_bignum_gcd() {
152 ctx->replace(tag<bignum>(bignum_gcd(x, y)));
155 void factor_vm::primitive_bignum_and() {
157 ctx->replace(tag<bignum>(bignum_bitwise_and(x, y)));
160 void factor_vm::primitive_bignum_or() {
162 ctx->replace(tag<bignum>(bignum_bitwise_ior(x, y)));
165 void factor_vm::primitive_bignum_xor() {
167 ctx->replace(tag<bignum>(bignum_bitwise_xor(x, y)));
171 void factor_vm::primitive_bignum_shift() {
172 fixnum y = untag_fixnum(ctx->pop());
173 bignum* x = untag<bignum>(ctx->peek());
174 ctx->replace(tag<bignum>(bignum_arithmetic_shift(x, y)));
177 void factor_vm::primitive_bignum_less() {
179 ctx->replace(tag_boolean(bignum_compare(x, y) == BIGNUM_COMPARISON_LESS));
182 void factor_vm::primitive_bignum_lesseq() {
184 ctx->replace(tag_boolean(bignum_compare(x, y) != BIGNUM_COMPARISON_GREATER));
187 void factor_vm::primitive_bignum_greater() {
189 ctx->replace(tag_boolean(bignum_compare(x, y) == BIGNUM_COMPARISON_GREATER));
192 void factor_vm::primitive_bignum_greatereq() {
194 ctx->replace(tag_boolean(bignum_compare(x, y) != BIGNUM_COMPARISON_LESS));
197 void factor_vm::primitive_bignum_not() {
198 ctx->replace(tag<bignum>(bignum_bitwise_not(untag<bignum>(ctx->peek()))));
201 void factor_vm::primitive_bignum_bitp() {
202 int bit = (int)to_fixnum(ctx->pop());
203 bignum* x = untag<bignum>(ctx->peek());
204 ctx->replace(tag_boolean(bignum_logbitp(bit, x)));
207 void factor_vm::primitive_bignum_log2() {
208 ctx->replace(tag<bignum>(bignum_integer_length(untag<bignum>(ctx->peek()))));
212 void factor_vm::primitive_fixnum_to_float() {
213 ctx->replace(allot_float(fixnum_to_float(ctx->peek())));
217 void factor_vm::primitive_format_float() {
218 char* locale = alien_offset(ctx->pop());
219 char* format = alien_offset(ctx->pop());
220 fixnum precision = untag_fixnum(ctx->pop());
221 fixnum width = untag_fixnum(ctx->pop());
222 char* fill = alien_offset(ctx->pop());
223 double value = untag_float_check(ctx->peek());
224 std::ostringstream localized_stream;
226 localized_stream.imbue(std::locale(locale));
227 } catch (const runtime_error&) {
228 byte_array* array = allot_byte_array(0);
229 ctx->replace(tag<byte_array>(array));
236 case 'f': localized_stream << std::fixed; break;
237 case 'e': localized_stream << std::scientific; break;
239 if (isupper(format[0])) {
240 localized_stream << std::uppercase;
242 if (fill[0] != '\0') {
243 localized_stream << std::setfill(fill[0]);
246 localized_stream << std::setw(static_cast<int>(width));
248 if (precision >= 0) {
249 localized_stream << std::setprecision(static_cast<int>(precision));
252 localized_stream << value;
256 localized_stream << fmt::format("{}", value);
259 const std::string& tmp = localized_stream.str();
260 const char* cstr = tmp.c_str();
261 size_t size = tmp.length();
262 byte_array* array = allot_byte_array(size);
263 memcpy(array->data<char>(), cstr, size);
264 ctx->replace(tag<byte_array>(array));
267 #define POP_FLOATS(x, y) \
268 double y = untag_float(ctx->pop()); \
269 double x = untag_float(ctx->peek());
271 void factor_vm::primitive_float_eq() {
273 ctx->replace(tag_boolean(x == y));
277 void factor_vm::primitive_float_add() {
279 ctx->replace(allot_float(x + y));
283 void factor_vm::primitive_float_subtract() {
285 ctx->replace(allot_float(x - y));
289 void factor_vm::primitive_float_multiply() {
291 ctx->replace(allot_float(x * y));
295 void factor_vm::primitive_float_divfloat() {
297 ctx->replace(allot_float(x / y));
300 void factor_vm::primitive_float_less() {
302 ctx->replace(tag_boolean(x < y));
305 void factor_vm::primitive_float_lesseq() {
307 ctx->replace(tag_boolean(x <= y));
310 void factor_vm::primitive_float_greater() {
312 ctx->replace(tag_boolean(x > y));
315 void factor_vm::primitive_float_greatereq() {
317 ctx->replace(tag_boolean(x >= y));
321 void factor_vm::primitive_float_bits() {
323 from_unsigned_cell(float_bits((float)untag_float_check(ctx->peek()))));
327 void factor_vm::primitive_bits_float() {
328 ctx->replace(allot_float(bits_float((uint32_t)to_cell(ctx->peek()))));
331 void factor_vm::primitive_double_bits() {
332 ctx->replace(from_unsigned_8(double_bits(untag_float_check(ctx->peek()))));
336 void factor_vm::primitive_bits_double() {
337 ctx->replace(allot_float(bits_double(to_unsigned_8(ctx->peek()))));
341 #define CELL_TO_FOO(name, type, converter) \
342 type factor_vm::name(cell tagged) { \
343 switch (TAG(tagged)) { \
345 return (type)untag_fixnum(tagged); \
347 return converter(untag<bignum>(tagged)); \
349 type_error(FIXNUM_TYPE, tagged); \
350 return 0; /* can't happen */ \
353 VM_C_API type name(cell tagged, factor_vm* parent) { \
354 return parent->name(tagged); \
357 CELL_TO_FOO(to_fixnum, fixnum, bignum_to_fixnum)
358 CELL_TO_FOO(to_fixnum_strict, fixnum, bignum_to_fixnum_strict)
359 CELL_TO_FOO(to_cell, cell, bignum_to_cell)
360 CELL_TO_FOO(to_signed_8, int64_t, bignum_to_long_long)
361 CELL_TO_FOO(to_unsigned_8, uint64_t, bignum_to_ulong_long)
364 VM_C_API cell from_signed_cell(fixnum integer, factor_vm* parent) {
365 return parent->from_signed_cell(integer);
369 VM_C_API cell from_unsigned_cell(cell integer, factor_vm* parent) {
370 return parent->from_unsigned_cell(integer);
374 cell factor_vm::from_signed_8(int64_t n) {
375 if (n < fixnum_min || n > fixnum_max)
376 return tag<bignum>(long_long_to_bignum(n));
378 return tag_fixnum((fixnum)n);
381 VM_C_API cell from_signed_8(int64_t n, factor_vm* parent) {
382 return parent->from_signed_8(n);
386 cell factor_vm::from_unsigned_8(uint64_t n) {
387 if (n > (uint64_t)fixnum_max)
388 return tag<bignum>(ulong_long_to_bignum(n));
390 return tag_fixnum((fixnum)n);
393 VM_C_API cell from_unsigned_8(uint64_t n, factor_vm* parent) {
394 return parent->from_unsigned_8(n);
398 float factor_vm::to_float(cell value) {
399 return (float)untag_float_check(value);
403 double factor_vm::to_double(cell value) { return untag_float_check(value); }
405 // The fixnum+, fixnum- and fixnum* primitives are defined in cpu_*.S. On
406 // overflow, they call these functions.
408 inline void factor_vm::overflow_fixnum_add(fixnum x, fixnum y) {
410 tag<bignum>(fixnum_to_bignum(untag_fixnum(x) + untag_fixnum(y))));
413 VM_C_API void overflow_fixnum_add(fixnum x, fixnum y, factor_vm* parent) {
414 parent->overflow_fixnum_add(x, y);
418 inline void factor_vm::overflow_fixnum_subtract(fixnum x, fixnum y) {
420 tag<bignum>(fixnum_to_bignum(untag_fixnum(x) - untag_fixnum(y))));
423 VM_C_API void overflow_fixnum_subtract(fixnum x, fixnum y, factor_vm* parent) {
424 parent->overflow_fixnum_subtract(x, y);
428 inline void factor_vm::overflow_fixnum_multiply(fixnum x, fixnum y) {
429 data_root<bignum> bx(fixnum_to_bignum(x), this);
430 data_root<bignum> by(fixnum_to_bignum(y), this);
431 cell ret = tag<bignum>(bignum_multiply(bx.untagged(), by.untagged()));
435 VM_C_API void overflow_fixnum_multiply(fixnum x, fixnum y, factor_vm* parent) {
436 parent->overflow_fixnum_multiply(x, y);