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Diffstat (limited to 'src/mesa/shader/slang/slang_compile_function.c')
-rw-r--r--src/mesa/shader/slang/slang_compile_function.c234
1 files changed, 234 insertions, 0 deletions
diff --git a/src/mesa/shader/slang/slang_compile_function.c b/src/mesa/shader/slang/slang_compile_function.c
new file mode 100644
index 0000000000..e6e0d89ddb
--- /dev/null
+++ b/src/mesa/shader/slang/slang_compile_function.c
@@ -0,0 +1,234 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 6.5
+ *
+ * Copyright (C) 2005-2006 Brian Paul All Rights Reserved.
+ *
+ * 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
+ * BRIAN PAUL 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.
+ */
+
+/**
+ * \file slang_compile_function.c
+ * slang front-end compiler
+ * \author Michal Krol
+ */
+
+#include "imports.h"
+#include "slang_compile.h"
+
+/* slang_fixup_table */
+
+void
+slang_fixup_table_init(slang_fixup_table * fix)
+{
+ fix->table = NULL;
+ fix->count = 0;
+}
+
+void
+slang_fixup_table_free(slang_fixup_table * fix)
+{
+ slang_alloc_free(fix->table);
+ slang_fixup_table_init(fix);
+}
+
+/**
+ * Add a new fixup address to the table.
+ */
+GLboolean
+slang_fixup_save(slang_fixup_table *fixups, GLuint address)
+{
+ fixups->table = (GLuint *)
+ slang_alloc_realloc(fixups->table,
+ fixups->count * sizeof(GLuint),
+ (fixups->count + 1) * sizeof(GLuint));
+ if (fixups->table == NULL)
+ return GL_FALSE;
+ fixups->table[fixups->count] = address;
+ fixups->count++;
+ return GL_TRUE;
+}
+
+
+
+/* slang_function */
+
+int
+slang_function_construct(slang_function * func)
+{
+ func->kind = slang_func_ordinary;
+ if (!slang_variable_construct(&func->header))
+ return 0;
+
+ func->parameters = (slang_variable_scope *)
+ slang_alloc_malloc(sizeof(slang_variable_scope));
+ if (func->parameters == NULL) {
+ slang_variable_destruct(&func->header);
+ return 0;
+ }
+
+ _slang_variable_scope_ctr(func->parameters);
+ func->param_count = 0;
+ func->body = NULL;
+ func->address = ~0;
+ slang_fixup_table_init(&func->fixups);
+ return 1;
+}
+
+void
+slang_function_destruct(slang_function * func)
+{
+ slang_variable_destruct(&func->header);
+ slang_variable_scope_destruct(func->parameters);
+ slang_alloc_free(func->parameters);
+ if (func->body != NULL) {
+ slang_operation_destruct(func->body);
+ slang_alloc_free(func->body);
+ }
+ slang_fixup_table_free(&func->fixups);
+}
+
+/*
+ * slang_function_scope
+ */
+
+GLvoid
+_slang_function_scope_ctr(slang_function_scope * self)
+{
+ self->functions = NULL;
+ self->num_functions = 0;
+ self->outer_scope = NULL;
+}
+
+void
+slang_function_scope_destruct(slang_function_scope * scope)
+{
+ unsigned int i;
+
+ for (i = 0; i < scope->num_functions; i++)
+ slang_function_destruct(scope->functions + i);
+ slang_alloc_free(scope->functions);
+}
+
+
+/**
+ * Search a list of functions for a particular function by name.
+ * \param funcs the list of functions to search
+ * \param a_name the name to search for
+ * \param all_scopes if non-zero, search containing scopes too.
+ * \return pointer to found function, or NULL.
+ */
+int
+slang_function_scope_find_by_name(slang_function_scope * funcs,
+ slang_atom a_name, int all_scopes)
+{
+ unsigned int i;
+
+ for (i = 0; i < funcs->num_functions; i++)
+ if (a_name == funcs->functions[i].header.a_name)
+ return 1;
+ if (all_scopes && funcs->outer_scope != NULL)
+ return slang_function_scope_find_by_name(funcs->outer_scope, a_name, 1);
+ return 0;
+}
+
+
+/**
+ * Search a list of functions for a particular function (for implementing
+ * function calls. Matching is done by first comparing the function's name,
+ * then the function's parameter list.
+ *
+ * \param funcs the list of functions to search
+ * \param fun the function to search for
+ * \param all_scopes if non-zero, search containing scopes too.
+ * \return pointer to found function, or NULL.
+ */
+slang_function *
+slang_function_scope_find(slang_function_scope * funcs, slang_function * fun,
+ int all_scopes)
+{
+ unsigned int i;
+
+ for (i = 0; i < funcs->num_functions; i++) {
+ slang_function *f = &funcs->functions[i];
+ unsigned int j;
+
+ if (fun->header.a_name != f->header.a_name)
+ continue;
+ if (fun->param_count != f->param_count)
+ continue;
+ for (j = 0; j < fun->param_count; j++) {
+ if (!slang_type_specifier_equal
+ (&fun->parameters->variables[j].type.specifier,
+ &f->parameters->variables[j].type.specifier))
+ break;
+ }
+ if (j == fun->param_count)
+ return f;
+ }
+ if (all_scopes && funcs->outer_scope != NULL)
+ return slang_function_scope_find(funcs->outer_scope, fun, 1);
+ return NULL;
+}
+
+/*
+ * _slang_build_export_code_table()
+ */
+
+GLboolean
+_slang_build_export_code_table(slang_export_code_table * tbl,
+ slang_function_scope * funs,
+ slang_code_unit * unit)
+{
+ slang_atom mainAtom;
+ GLuint i;
+
+ mainAtom = slang_atom_pool_atom(tbl->atoms, "main");
+ if (mainAtom == SLANG_ATOM_NULL)
+ return GL_FALSE;
+
+ for (i = 0; i < funs->num_functions; i++) {
+ if (funs->functions[i].header.a_name == mainAtom) {
+ slang_function *fun = &funs->functions[i];
+ slang_export_code_entry *e;
+ slang_assemble_ctx A;
+
+ e = slang_export_code_table_add(tbl);
+ if (e == NULL)
+ return GL_FALSE;
+ e->address = unit->object->assembly.count;
+ e->name = slang_atom_pool_atom(tbl->atoms, "@main");
+ if (e->name == SLANG_ATOM_NULL)
+ return GL_FALSE;
+
+ A.file = &unit->object->assembly;
+ A.mach = &unit->object->machine;
+ A.atoms = &unit->object->atompool;
+ A.space.funcs = &unit->funs;
+ A.space.structs = &unit->structs;
+ A.space.vars = &unit->vars;
+ slang_assembly_file_push_label(&unit->object->assembly,
+ slang_asm_local_alloc, 20);
+ slang_assembly_file_push_label(&unit->object->assembly,
+ slang_asm_enter, 20);
+ _slang_assemble_function_call(&A, fun, NULL, 0, GL_FALSE);
+ slang_assembly_file_push(&unit->object->assembly, slang_asm_exit);
+ }
+ }
+ return GL_TRUE;
+}
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