+++ /dev/null
-/*
- * Copyright (C) 2012, 2013
- * Dale Weiler
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy of
- * this software and associated documentation files (the "Software"), to deal in
- * the Software without restriction, including without limitation the rights to
- * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
- * of the Software, and to permit persons to whom the Software is furnished to do
- * so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-#include "ast.h"
-
-
-/*
- * Provides all the "intrinsics" / "builtins" for GMQCC. These can do
- * a few things, they can provide fall back implementations for math
- * functions if the definitions don't exist for some given engine. Or
- * then can determine definitions for existing builtins, and simply
- * wrap back to them instead. This is like a "portable" intrface that
- * is entered when -fintrin is used (causing all existing builtins to
- * be ignored by the compiler and instead interface through here.
- */
-typedef struct {
- ast_expression (*intrin)(parser_t *);
- const char *name;
- const char *alias;
-} intrin_t;
-
-
-/*
- * Some helper macros for generating def, doing ast_value from func, with
- * assignment, and a nice aggregate builder for generating the intrinsic
- * table at the bottom of this file, and for registering functions and
- * globals with the parser (so that they can be codegen'ed)
- */
-#define INTRIN_IMP(NAME) \
- ast_expression intrin_##NAME (parser_t *parser)
-
-/*
- * For intrinsics that are not to take precedence over a builtin, leave
- * ALIAS as an empty string.
- */
-#define INTRIN_DEF(NAME, ALIAS) \
- { &intrin_##NAME, #NAME, ALIAS }
-
-
-#define INTRIN_VAL(NAME, FUNC, STYPE, VTYPE) \
- do { \
- (NAME) = ast_value_new ( \
- parser_ctx(parser), \
- "__builtin_" #NAME, \
- TYPE_FUNCTION \
- ); \
- (NAME)->expression.next = (ast_expression*)ast_value_new ( \
- parser_ctx(parser), \
- STYPE, \
- VTYPE \
- ); \
- (FUNC) = ast_function_new ( \
- parser_ctx(parser), \
- "__builtin_" #NAME, \
- (NAME) \
- ); \
- } while (0)
-
-#define INTRIN_REG(FUNC, VALUE) \
- do { \
- vec_push(parser->functions, (FUNC)); \
- vec_push(parser->globals, (ast_expression*)(VALUE)); \
- } while (0)
-
-
-typedef enum {
- QC_FP_NAN,
- QC_FP_INFINITE,
- QC_FP_ZERO,
- QC_FP_SUBNORMAL,
- QC_FP_NORMAL
-} intrin_fp_t;
-
-
-#if 0
-/*
- * Implementation of intrinsics. Each new intrinsic needs to be added
- * to the intrinsic table below.
- */
-INTRIN_IMP(isnan) {
- /*
- * float isnan(float x) {
- * float y;
- *
- * y = x;
- * return (x != y);
- */
-}
-
-INTRIN_IMP(isinf) {
- /*
- * float isinf(float x) {
- * return (x != 0) && (x + x == x);
- * }
- */
-}
-
-INTRIN_IMP(fpclassify) {
- /*
- * float __builtin_fpclassify(float x) {
- * if (isnan(x)) {
- * return QC_FP_NAN;
- * }
- * if (isinf(x)) {
- * return QC_FP_INFINITE;
- * }
- * if (x == 0.0f) {
- * return QC_FP_ZERO;
- * }
- * return QC_FP_NORMAL;
- * }
- */
-}
-#endif
-
-
-INTRIN_IMP(exp) {
- /*
- * float __builtin_exp(float x) {
- * return __builtin_pow(QC_M_E, x);
- * }
- */
- static ast_value *value = NULL;
-
- if (!value) {
- ast_call *call = ast_call_new (parser_ctx(parser), intrin_func(parser, "pow"));
- ast_value *arg1 = ast_value_new (parser_ctx(parser), "x", TYPE_FLOAT);
- ast_block *body = ast_block_new (parser_ctx(parser));
- ast_function *func = NULL;
-
- INTRIN_VAL("exp", func, "<float>", TYPE_FLOAT);
-
- /* push arguments for params to call */
- vec_push(call->params, (ast_expression*)parser_const_float(parser, QC_M_E));
- vec_push(call->params, (ast_expression*)arg1);
-
- /* return pow(QC_M_E, x) */
- vec_push(body->exprs,
- (ast_expression*)ast_return_new(
- parser_ctx(parser),
- (ast_expression*)call
- )
- );
-
- vec_push(value->expressions.param, arg1); /* float x (for param) */
- vec_push(func ->blocks, body); /* {{{ body }}} */
-
- INTRIN_REG(func, value);
- }
-
- return (ast_expression*)value;
-}
-
-#if 0
-INTRIN_IMP(exp2) {
- /*
- * float __builtin_exp2(float x) {
- * return __builin_pow(2, x);
- * }
- */
-}
-
-INTRIN_IMP(expm1) {
- /*
- * float __builtin_expm1(float x) {
- * return __builtin_exp(x) - 1;
- * }
- */
-}
-#endif
-
-intrin_t intrin_intrinsics[] = {
- INTRIN_DEF(exp, "exp")
-};
--- /dev/null
+/*
+ * Copyright (C) 2012, 2013
+ * Dale Weiler
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+/*
+ * Provides all the "intrinsics" / "builtins" for GMQCC. These can do
+ * a few things, they can provide fall back implementations for math
+ * functions if the definitions don't exist for some given engine. Or
+ * then can determine definitions for existing builtins, and simply
+ * wrap back to them instead. This is like a "portable" intrface that
+ * is entered when -fintrin is used (causing all existing builtins to
+ * be ignored by the compiler and instead interface through here.
+ */
+typedef struct {
+ ast_expression *(*intrin)(parser_t *);
+ const char *name;
+ const char *alias;
+} intrin_t;
+
+ht intrin_intrinsics() {
+ static ht intrinsics = NULL;
+ if (!intrinsics)
+ intrinsics = util_htnew(PARSER_HT_SIZE);
+
+ return intrinsics;
+}
+
+void intrin_intrinsics_destroy() {
+ util_htdel(intrin_intrinsics());
+}
+
+#define INTRIN_VAL(VALUE, NAME, FUNC, STYPE, VTYPE) \
+ do { \
+ (VALUE) = ast_value_new ( \
+ parser_ctx(parser), \
+ "__builtin_" NAME, \
+ TYPE_FUNCTION \
+ ); \
+ (VALUE)->expression.next = (ast_expression*)ast_value_new ( \
+ parser_ctx(parser), \
+ STYPE, \
+ VTYPE \
+ ); \
+ (FUNC) = ast_function_new ( \
+ parser_ctx(parser), \
+ "__builtin_" NAME, \
+ (VALUE) \
+ ); \
+ } while (0)
+
+#define INTRIN_REG(FUNC, VALUE) \
+ do { \
+ vec_push(parser->functions, (FUNC)); \
+ vec_push(parser->globals, (ast_expression*)(VALUE)); \
+ } while (0)
+
+
+ast_expression *intrin_func (parser_t *parser, const char *name);
+
+#define QC_M_E 2.71828182845905
+
+ast_expression *intrin_pow(parser_t *parser) {
+ static ast_value *value = NULL;
+
+ if (!value) {
+ ast_value *arg1 = ast_value_new(parser_ctx(parser), "x", TYPE_FLOAT);
+ ast_value *arg2 = ast_value_new(parser_ctx(parser), "y", TYPE_FLOAT);
+ ast_value *local = ast_value_new(parser_ctx(parser), "local", TYPE_FLOAT);
+ ast_block *body = ast_block_new(parser_ctx(parser));
+ ast_block *l1b = ast_block_new(parser_ctx(parser)); /* loop 1 body */
+ ast_block *l2b = ast_block_new(parser_ctx(parser)); /* looo 2 body */
+ ast_loop *loop1 = NULL;
+ ast_loop *loop2 = NULL;
+ ast_function *func = NULL;
+
+ INTRIN_VAL(value, "pow", func, "<float>", TYPE_FLOAT);
+
+ /* arguments */
+ vec_push(value->expression.params, arg1);
+ vec_push(value->expression.params, arg2);
+
+ /* local */
+ vec_push(body->locals, local);
+
+ /* assignment to local of value 1.0f */
+ vec_push(body->exprs,
+ (ast_expression*)ast_store_new (
+ parser_ctx(parser),
+ INSTR_STORE_F,
+ (ast_expression*)local,
+ (ast_expression*)parser_const_float_1(parser)
+ )
+ );
+
+ /* y >>= 2 */
+ vec_push(l2b->exprs,
+ (ast_expression*)ast_binstore_new (
+ parser_ctx(parser),
+ INSTR_STORE_F,
+ INSTR_MUL_F,
+ (ast_expression*)arg2,
+ (ast_expression*)parser_const_float(parser, 0.25f)
+ )
+ );
+
+ /* x *= x */
+ vec_push(l2b->exprs,
+ (ast_expression*)ast_binstore_new (
+ parser_ctx(parser),
+ INSTR_STORE_F,
+ INSTR_MUL_F,
+ (ast_expression*)arg1,
+ (ast_expression*)arg1
+ )
+ );
+
+ /* while (!(y&1)) */
+ loop2 = ast_loop_new (
+ parser_ctx(parser),
+ NULL,
+ (ast_expression*)ast_binary_new (
+ parser_ctx(parser),
+ INSTR_AND,
+ (ast_expression*)arg2,
+ (ast_expression*)parser_const_float_1(parser)
+ ),
+ true, /* ! not */
+ NULL,
+ false,
+ NULL,
+ (ast_expression*)l2b
+ );
+
+ /* push nested loop into loop expressions */
+ vec_push(l1b->exprs, (ast_expression*)loop2);
+
+ /* y-- */
+ vec_push(l1b->exprs,
+ (ast_expression*)ast_binstore_new (
+ parser_ctx(parser),
+ INSTR_STORE_F,
+ INSTR_SUB_F,
+ (ast_expression*)arg2,
+ (ast_expression*)parser_const_float_1(parser)
+ )
+ );
+ /* local *= x */
+ vec_push(l1b->exprs,
+ (ast_expression*)ast_binstore_new (
+ parser_ctx(parser),
+ INSTR_STORE_F,
+ INSTR_MUL_F,
+ (ast_expression*)local,
+ (ast_expression*)arg1
+ )
+ );
+
+ /* while (y > 0) */
+ loop1 = ast_loop_new (
+ parser_ctx(parser),
+ NULL,
+ (ast_expression*)ast_binary_new (
+ parser_ctx(parser),
+ INSTR_GT,
+ (ast_expression*)arg2,
+ (ast_expression*)parser_const_float_0(parser)
+ ),
+ false,
+ NULL,
+ false,
+ NULL,
+ (ast_expression*)l1b
+ );
+
+ /* push the loop1 into the body for the function */
+ vec_push(body->exprs, (ast_expression*)loop1);
+
+ /* return local; */
+ vec_push(body->exprs,
+ (ast_expression*)ast_return_new (
+ parser_ctx(parser),
+ (ast_expression*)local
+ )
+ );
+
+ /* push block and register intrin for codegen */
+ vec_push(func->blocks, body);
+
+ INTRIN_REG(func, value);
+ }
+
+ return (ast_expression*)value;
+}
+
+ast_expression *intrin_mod(parser_t *parser) {
+ static ast_value *value = NULL;
+
+ if (!value) {
+ ast_call *call = ast_call_new (parser_ctx(parser), intrin_func(parser, "floor"));
+ ast_value *arg1 = ast_value_new(parser_ctx(parser), "x", TYPE_FLOAT);
+ ast_value *arg2 = ast_value_new(parser_ctx(parser), "y", TYPE_FLOAT);
+ ast_block *body = ast_block_new(parser_ctx(parser));
+ ast_function *func = NULL;
+
+ INTRIN_VAL(value, "mod", func, "<float>", TYPE_FLOAT);
+
+ /* floor(x/y) */
+ vec_push(call->params,
+ (ast_expression*)ast_binary_new (
+ parser_ctx(parser),
+ INSTR_DIV_F,
+ (ast_expression*)arg1,
+ (ast_expression*)arg2
+ )
+ );
+
+ vec_push(body->exprs,
+ (ast_expression*)ast_return_new(
+ parser_ctx(parser),
+ (ast_expression*)ast_binary_new(
+ parser_ctx(parser),
+ INSTR_SUB_F,
+ (ast_expression*)arg1,
+ (ast_expression*)ast_binary_new(
+ parser_ctx(parser),
+ INSTR_MUL_F,
+ (ast_expression*)arg2,
+ (ast_expression*)call
+ )
+ )
+ )
+ );
+
+ vec_push(value->expression.params, arg1); /* float x (for param) */
+ vec_push(value->expression.params, arg2); /* float y (for param) */
+
+ vec_push(func->blocks, body); /* {{{ body }}} */
+
+ INTRIN_REG(func, value);
+ }
+
+ return (ast_expression*)value;
+}
+
+ast_expression *intrin_exp(parser_t *parser) {
+ /*
+ * float __builtin_exp(float x) {
+ * return __builtin_pow(QC_M_E, x);
+ * }
+ */
+ static ast_value *value = NULL;
+
+ if (!value) {
+ ast_call *call = ast_call_new (parser_ctx(parser), intrin_func(parser, "pow"));
+ ast_value *arg1 = ast_value_new (parser_ctx(parser), "x", TYPE_FLOAT);
+ ast_block *body = ast_block_new (parser_ctx(parser));
+ ast_function *func = NULL;
+
+ INTRIN_VAL(value, "exp", func, "<float>", TYPE_FLOAT);
+
+ /* push arguments for params to call */
+ vec_push(call->params, (ast_expression*)parser_const_float(parser, QC_M_E));
+ vec_push(call->params, (ast_expression*)arg1);
+
+ /* return pow(QC_M_E, x) */
+ vec_push(body->exprs,
+ (ast_expression*)ast_return_new(
+ parser_ctx(parser),
+ (ast_expression*)call
+ )
+ );
+
+ vec_push(value->expression.params, arg1); /* float x (for param) */
+
+ vec_push(func->blocks, body); /* {{{ body }}} */
+
+ INTRIN_REG(func, value);
+ }
+
+ return (ast_expression*)value;
+}
+
+static intrin_t intrinsics[] = {
+ {&intrin_exp, "__builtin_exp", "exp"},
+ {&intrin_mod, "__builtin_mod", "mod"},
+ {&intrin_pow, "__builtin_pow", "pow"}
+};
+
+ast_expression *intrin_func(parser_t *parser, const char *name) {
+ static bool init = false;
+ size_t i = 0;
+ void *find;
+
+ /* register the intrinsics in the hashtable for O(1) lookup */
+ if (!init) {
+ for (i = 0; i < sizeof(intrinsics)/sizeof(*intrinsics); i++)
+ util_htset(intrin_intrinsics(), intrinsics[i].alias, &intrinsics[i]);
+
+ init = true; /* only once */
+ }
+
+ /* jesus fucking christ all might Blub design something less fucking
+ * impossible to use.
+ */
+ if ((find = (void*)parser_find_global(parser, name)) && ((ast_value*)find)->expression.vtype == TYPE_FUNCTION)
+ for (i = 0; i < vec_size(parser->functions); ++i)
+ if (((ast_value*)find)->name && !strcmp(parser->functions[i]->name, ((ast_value*)find)->name) && parser->functions[i]->builtin < 0)
+ return find;
+
+ if ((find = util_htget(intrin_intrinsics(), name))) {
+ /* intrinsic is in table. This will "generate the function" so
+ * to speak (if it's not already generated).
+ */
+ return ((intrin_t*)find)->intrin(parser);
+ }
+
+ parseerror(parser, "need function: `%s` compiler depends on it", name);
+ return NULL;
+}
projects / xonotic / gmqcc.git / commitdiff