-/*
- * 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.
- */
+#ifndef GMQCC_INTRIN_HDR
+#define GMQCC_INTRIN_HDR
+#include "gmqcc.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;
+struct fold;
+struct parser_t;
-ht intrin_intrinsics() {
- static ht intrinsics = NULL;
- if (!intrinsics)
- intrinsics = util_htnew(PARSER_HT_SIZE);
+struct ast_function;
+struct ast_expression;
+struct ast_value;
- return intrinsics;
-}
+struct intrin;
-#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) {
- /*
- * float pow(float x, float y) {
- * float local = 1.0f;
- * while (y > 0) {
- * while (!(y & 1)) {
- * y >>= 2;
- * x *= x;
- * }
- * y--;
- * local *= x;
- * }
- * return local;
- * }
- */
- 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) {
- /*
- * float mod(float x, float y) {
- * return x - y * floor(x / y);
- * }
- */
- 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 exp(float x) {
- * return 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;
-}
-
-ast_expression *intrin_isnan(parser_t *parser) {
- /*
- * float isnan(float x) {
- * float local;
- * local = x;
- *
- * return (x != local);
- * }
- */
- static ast_value *value = NULL;
-
- if (!value) {
- ast_value *arg1 = ast_value_new (parser_ctx(parser), "x", TYPE_FLOAT);
- ast_value *local = ast_value_new (parser_ctx(parser), "local", TYPE_FLOAT);
- ast_block *body = ast_block_new (parser_ctx(parser));
- ast_function *func = NULL;
-
- INTRIN_VAL(value, "isnan", func, "<float>", TYPE_FLOAT);
-
- vec_push(body->locals, local);
- vec_push(body->exprs,
- (ast_expression*)ast_store_new(
- parser_ctx(parser),
- INSTR_STORE_F,
- (ast_expression*)local,
- (ast_expression*)arg1
- )
- );
-
- vec_push(body->exprs,
- (ast_expression*)ast_return_new(
- parser_ctx(parser),
- (ast_expression*)ast_binary_new(
- parser_ctx(parser),
- INSTR_NE_F,
- (ast_expression*)arg1,
- (ast_expression*)local
- )
- )
- );
-
- vec_push(value->expression.params, arg1);
-
- vec_push(func->blocks, 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"},
- {&intrin_isnan, "__builtin_isnan", "isnan"}
+struct intrin_func_t {
+ ast_expression *(intrin::*function)();
+ const char *name;
+ const char *alias;
+ size_t args;
};
-void intrin_intrinsics_destroy(parser_t *parser) {
- /*size_t i;*/
- (void)parser;
- util_htdel(intrin_intrinsics());
-#if 0
- for (i = 0; i < sizeof(intrinsics)/sizeof(intrin_t); i++)
- ast_value_delete( (ast_value*) intrinsics[i].intrin(parser));
-#endif
-}
-
-
-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, Blub design something less fucking
- * impossible to use, like a ast_is_builtin(ast_expression *), also
- * use a hashtable :P
- */
- 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;
+struct intrin {
+ intrin() = default;
+ intrin(parser_t *parser);
+
+ ast_expression *debug_typestring();
+ ast_expression *do_fold(ast_value *val, ast_expression **exprs);
+ ast_expression *func_try(size_t offset, const char *compare);
+ ast_expression *func_self(const char *name, const char *from);
+ ast_expression *func(const char *name);
+
+protected:
+ lex_ctx_t ctx() const;
+ ast_function *value(ast_value **out, const char *name, qc_type vtype);
+ void reg(ast_value *const value, ast_function *const func);
+
+ ast_expression *nullfunc();
+ ast_expression *isfinite_();
+ ast_expression *isinf_();
+ ast_expression *isnan_();
+ ast_expression *isnormal_();
+ ast_expression *signbit_();
+ ast_expression *acosh_();
+ ast_expression *asinh_();
+ ast_expression *atanh_();
+ ast_expression *exp_();
+ ast_expression *exp2_();
+ ast_expression *expm1_();
+ ast_expression *pow_();
+ ast_expression *mod_();
+ ast_expression *fabs_();
+ ast_expression *epsilon_();
+ ast_expression *nan_();
+ ast_expression *inf_();
+ ast_expression *ln_();
+ ast_expression *log_variant(const char *name, float base);
+ ast_expression *log_();
+ ast_expression *log10_();
+ ast_expression *log2_();
+ ast_expression *logb_();
+ ast_expression *shift_variant(const char *name, size_t instr);
+ ast_expression *lshift();
+ ast_expression *rshift();
+
+ void error(const char *fmt, ...);
+
+private:
+ parser_t *m_parser;
+ fold *m_fold;
+ std::vector<intrin_func_t> m_intrinsics;
+ std::vector<ast_expression*> m_generated;
+};
- 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;
-}
+#endif
projects / xonotic / gmqcc.git / blobdiff