X-Git-Url: http://deadsoftware.ru/gitweb?a=blobdiff_plain;f=src%2Fbackends%2Fjvm%2Fgenerator-jvm.c;h=48db18000ba1a65e2c651d59f7f0f0afe0482f53;hb=afdfb61e64fb9c7d05a7612812739aa0d9a560fc;hp=24268e178a7474cf893ec5836b437fedc6197bcf;hpb=023ef0d8349acdfe751bba1b50749361682f72ff;p=dsw-obn.git diff --git a/src/backends/jvm/generator-jvm.c b/src/backends/jvm/generator-jvm.c index 24268e1..48db180 100644 --- a/src/backends/jvm/generator-jvm.c +++ b/src/backends/jvm/generator-jvm.c @@ -8,8 +8,8 @@ #include -#include "../../../include/oberon.h" #include "../../oberon-internals.h" +#include "../../generator.h" #include "generator-jvm.h" #include "generator-jvm-abi.h" #include "generator-jvm-asm.h" @@ -21,6 +21,96 @@ push_item(gen_proc_t * p, oberon_item_t * item); static void jvm_generate_new(gen_proc_t * p, oberon_type_t * type, int num); +static void +jvm_generate_cast_prefix(gen_proc_t * p, char prefix, char postfix) +{ + if((prefix == 'b' || prefix == 's') && (postfix = 'l' || postfix == 'd')) + { + prefix = 'i'; + } + + if(prefix == postfix) + { + return; + } + + if((prefix == 'l' || prefix == 'd') && (postfix == 'b' || postfix == 's')) + { + jvm_generate(p, 2, 1, "%c2i", prefix); + prefix = 'i'; + } + + int from_cell_size = jvm_cell_size_for_postfix(prefix); + int to_cell_size = jvm_cell_size_for_postfix(postfix); + jvm_generate(p, from_cell_size, to_cell_size, "%c2%c", prefix, postfix); +} + +static void +jvm_generate_cast_type(gen_proc_t * p, oberon_type_t * from, oberon_type_t * to) +{ + if(to -> class == OBERON_TYPE_RECORD || to -> class == OBERON_TYPE_POINTER) + { + if(to -> class == OBERON_TYPE_POINTER && to -> base -> class == OBERON_TYPE_RECORD) + { + char * full_name = jvm_get_class_full_name(to); + jvm_generate(p, 1, 1, "checkcast %s", full_name); + } + } + else + { + char prefix = jvm_get_prefix(from); + char postfix = jvm_get_postfix(to); + jvm_generate_cast_prefix(p, prefix, postfix); + } +} + +static void +jvm_generate_hard_cast_type(gen_proc_t * p, oberon_type_t * from, oberon_type_t * to) +{ + if(from -> class == OBERON_TYPE_REAL + && (to -> class == OBERON_TYPE_INTEGER || to -> class == OBERON_TYPE_SYSTEM_BYTE)) + { + char postfix = jvm_get_postfix(to); + if(from -> size <= 4) + { + jvm_generate(p, 1, 1, "invokestatic java/lang/Float/floatToRawIntBits(F)I"); + jvm_generate_cast_prefix(p, 'i', postfix); + } + else + { + jvm_generate(p, 2, 2, "invokestatic java/lang/Double/doubleToRawIntBits(D)J"); + jvm_generate_cast_prefix(p, 'l', postfix); + } + } + else if((from -> class == OBERON_TYPE_INTEGER || from -> class == OBERON_TYPE_SYSTEM_BYTE) + && to -> class == OBERON_TYPE_REAL) + { + char prefix = jvm_get_prefix(from); + if(to -> size <= 4) + { + jvm_generate_cast_prefix(p, prefix, 'i'); + jvm_generate(p, 1, 1, "invokestatic java/lang/Float/intBitsToFloat(I)F"); + } + else + { + jvm_generate_cast_prefix(p, prefix, 'l'); + jvm_generate(p, 2, 2, "invokestatic java/lang/Double/longBitsToDouble(J)D"); + } + } + else + { + jvm_generate_cast_type(p, from, to); + } +} + +static void +check_index(gen_proc_t * p, oberon_type_t * index_type) +{ + // TODO проверка валидности границ + char prefix = jvm_get_prefix(index_type); + jvm_generate_cast_prefix(p, prefix, 'i'); +} + /* * Генерирует код для инициализации массива со статическим базовым типом * ( aref -- ) @@ -492,6 +582,8 @@ oberon_generator_init_type(oberon_context_t * ctx, oberon_type_t * type) case OBERON_TYPE_STRING: case OBERON_TYPE_SET: case OBERON_TYPE_NIL: + case OBERON_TYPE_SYSTEM_BYTE: + case OBERON_TYPE_SYSTEM_PTR: break; case OBERON_TYPE_RECORD: m = type -> module -> gen_mod; @@ -581,6 +673,13 @@ oberon_generator_init_record(oberon_context_t * ctx, oberon_type_t * rec) jvm_generate_var_initialization(p, copy_dst); jvm_generate_var_initialization(p, copy_src); + if(rec -> base) + { + jvm_generate_load(p, copy_dst); + jvm_generate_load(p, copy_src); + jvm_generate_copy_record(p, rec -> base); + } + num = rec -> num_decl; field = rec -> decl; for(int i = 0; i < num; i++) @@ -630,6 +729,13 @@ oberon_generator_init_var(oberon_context_t * ctx, oberon_object_t * var) struct gen_class * c; char * name = var -> name; gen_type_t * t = var -> type -> gen_type; + + assert(name); + if(t == NULL) + { + gen_error("uninitialized type class %i", var -> type -> class); + } + switch(var -> class) { case OBERON_CLASS_VAR_PARAM: @@ -723,6 +829,18 @@ oberon_generator_fini_module(oberon_module_t * mod) static void push_expr(gen_proc_t * p, oberon_expr_t * expr); +static void +oberon_generate_static_initialization(gen_proc_t * p, oberon_object_t * x) +{ + if(x -> type -> class == OBERON_TYPE_ARRAY + || x -> type -> class == OBERON_TYPE_RECORD) + { + jvm_generate_ldst_prepare(p, x -> gen_var); + jvm_generate_new(p, x -> type, 0); + jvm_generate_store(p, x -> gen_var); + } +} + void oberon_generate_begin_module(oberon_context_t * ctx) { @@ -750,18 +868,15 @@ oberon_generate_begin_module(oberon_context_t * ctx) { if(x -> class == OBERON_CLASS_MODULE) { - jvm_generate(p, 0, 0, "invokestatic %s/BEGIN()V", x -> module -> gen_mod -> class -> full_name); + if(!x -> module -> intrinsic) + { + jvm_generate(p, 0, 0, "invokestatic %s/BEGIN()V", x -> module -> gen_mod -> class -> full_name); + } } else if(x -> class == OBERON_CLASS_VAR) { jvm_generate_var_initialization(p, x -> gen_var); - if(x -> type -> class == OBERON_TYPE_ARRAY - || x -> type -> class == OBERON_TYPE_RECORD) - { - jvm_generate_ldst_prepare(p, x -> gen_var); - jvm_generate_new(p, x -> type, 0); - jvm_generate_store(p, x -> gen_var); - } + oberon_generate_static_initialization(p, x); } x = x -> next; @@ -860,10 +975,12 @@ jvm_generate_local_object(gen_proc_t * p, oberon_object_t * x) case OBERON_CLASS_VAR: jvm_generate_var(v); break; + case OBERON_CLASS_CONST: + case OBERON_CLASS_TYPE: case OBERON_CLASS_PROC: break; default: - gen_error("jvm_generate_local_initialization: wat"); + gen_error("jvm_generate_local_initialization: wat class %i", x -> class); break; } } @@ -884,28 +1001,31 @@ jvm_generate_local_initialization(gen_proc_t * p, oberon_object_t * x) switch(x -> class) { case OBERON_CLASS_VAR_PARAM: + jvm_generate_var_initialization(p, v); + break; case OBERON_CLASS_PARAM: + jvm_generate_var_initialization(p, v); + if(x -> type -> class == OBERON_TYPE_ARRAY) + { + jvm_generate_array_duplicate_and_replace(p, v, x -> type); + } + else if(x -> type -> class == OBERON_TYPE_RECORD) + { + jvm_generate_record_duplicate_and_replace(p, v, x -> type); + } + break; case OBERON_CLASS_VAR: jvm_generate_var_initialization(p, v); + oberon_generate_static_initialization(p, x); break; + case OBERON_CLASS_CONST: + case OBERON_CLASS_TYPE: case OBERON_CLASS_PROC: break; default: - gen_error("jvm_generate_local_initialization: wat"); + gen_error("jvm_generate_local_initialization: wat class %i", x -> class); break; } - - if(x -> class == OBERON_CLASS_PARAM) - { - if(x -> type -> class == OBERON_TYPE_ARRAY) - { - jvm_generate_array_duplicate_and_replace(p, v, x -> type); - } - else if(x -> type -> class == OBERON_TYPE_RECORD) - { - jvm_generate_record_duplicate_and_replace(p, v, x -> type); - } - } } void @@ -966,6 +1086,7 @@ oberon_generate_end_proc(oberon_context_t * ctx) m = ctx -> mod -> gen_mod; p = m -> class -> p; + oberon_generate_trap(ctx, -4); jvm_generate_function_end(p); } @@ -1044,13 +1165,17 @@ push_varptr(gen_proc_t * p, oberon_expr_t * expr) jvm_generate_ldst_prepare(p, expr -> item.var -> gen_var); break; case MODE_INDEX: - push_item(p, (oberon_item_t *) expr -> item.parent); + push_item(p, expr -> item.parent); push_expr(p, expr -> item.args); + check_index(p, expr -> item.args -> result); break; case MODE_FIELD: - push_item(p, (oberon_item_t *) expr -> item.parent); + push_item(p, expr -> item.parent); jvm_generate_ldst_prepare(p, expr -> item.var -> gen_var); break; + case MODE_DEREF: + push_varptr(p, (oberon_expr_t *) expr -> item.parent); + break; default: gen_error("push_varptr: wat %i", expr -> item.mode); break; @@ -1161,44 +1286,13 @@ jvm_generate_expr_new_pointer(gen_proc_t * p, oberon_type_t * type, int num, obe for(int i = 0; i < num; i++) { push_expr(p, arg); + check_index(p, arg -> result); arg = arg -> next; } jvm_generate_new(p, type -> base, num); } -static void -jvm_generate_cast_prefix(gen_proc_t * p, char prefix, char postfix) -{ - if(prefix == postfix) - { - return; - } - - int from_cell_size = jvm_cell_size_for_postfix(prefix); - int to_cell_size = jvm_cell_size_for_postfix(postfix); - jvm_generate(p, from_cell_size, to_cell_size, "%c2%c", prefix, postfix); -} - -static void -jvm_generate_cast_type(gen_proc_t * p, oberon_type_t * from, oberon_type_t * to) -{ - if(to -> class == OBERON_TYPE_RECORD || to -> class == OBERON_TYPE_POINTER) - { - if(to -> class == OBERON_TYPE_POINTER && to -> base -> class == OBERON_TYPE_RECORD) - { - char * full_name = jvm_get_class_full_name(to); - jvm_generate(p, 1, 1, "checkcast %s", full_name); - } - } - else - { - char prefix = jvm_get_prefix(from); - char postfix = jvm_get_postfix(to); - jvm_generate_cast_prefix(p, prefix, postfix); - } -} - static void push_item(gen_proc_t * p, oberon_item_t * item) { @@ -1229,6 +1323,7 @@ push_item(gen_proc_t * p, oberon_item_t * item) int cell_size = jvm_cell_size_for_postfix(postfix); push_item(p, item -> parent); push_expr(p, item -> args); + check_index(p, item -> args -> result); jvm_generate(p, 1 + 1, cell_size, "%caload", postfix); break; case MODE_FIELD: @@ -1256,6 +1351,10 @@ push_item(gen_proc_t * p, oberon_item_t * item) jvm_generate_array_len(p, item -> integer); jvm_generate_cast_prefix(p, 'i', jvm_get_postfix(item -> result)); break; + case MODE_AS: + push_item(p, item -> parent); + jvm_generate_cast_type(p, item -> parent -> result, item -> result); + break; default: gen_error("push_item: unk mode %i", item -> mode); break; @@ -1562,36 +1661,35 @@ jvm_generate_in(gen_proc_t * p, oberon_expr_t * a, oberon_expr_t * b) } static void -jvm_generate_ash(gen_proc_t * p, oberon_expr_t * a, oberon_expr_t * b) +jvm_generate_shift(gen_proc_t * p, int op, oberon_expr_t * a, oberon_expr_t * b) { oberon_type_t * t = a -> result; int cell_size = jvm_cell_size_for_type(t); char prefix = jvm_get_prefix(t); - int label_else = jvm_new_label_id(p); - int label_end = jvm_new_label_id(p); - - /* if b < 0 then a << b else a >> b end */ + char dt = jvm_get_type_of_prefix(prefix); push_expr(p, a); + jvm_generate_cast_type(p, a -> result, t); push_expr(p, b); - if(cell_size == 1) - { - jvm_generate(p, cell_size, 2 * cell_size, "dup"); - } - else + jvm_generate_cast_type(p, b -> result, t); + + char * opname; + switch(op) { - jvm_generate(p, cell_size, 2 * cell_size, "dup2"); + case OP_ASH: + opname = "ASH"; + break; + case OP_LSH: + opname = "LSH"; + break; + case OP_ROT: + opname = "ROT"; + break; + default: + gen_error("jvm_generate_shift: invalid op %i", op); } - jvm_generate_push_int_size(p, 0, t -> size); - jvm_generate_compare_op(p, t, OP_LSS); - jvm_generate(p, cell_size, 0, "ifne L%i", label_else); - jvm_generate(p, 2 * cell_size, cell_size, "%cshl", prefix); - jvm_generate(p, 0, 0, "goto L%i", label_end); - jvm_generate_label(p, label_else); - jvm_generate_abs(p, prefix); - jvm_generate(p, 2 * cell_size, cell_size, "%cshr", prefix); - jvm_generate_label(p, label_end); + jvm_generate(p, 2 * cell_size, cell_size, "invokestatic SYSTEM/%s(%c%c)%c", opname, dt, dt, dt); } static void @@ -1617,6 +1715,10 @@ push_operator(gen_proc_t * p, oberon_oper_t * oper) push_expr(p, oper -> left); jvm_generate_cast_type(p, oper -> left -> result, oper -> result); break; + case OP_HARDCAST: + push_expr(p, oper -> left); + jvm_generate_hard_cast_type(p, oper -> left -> result, oper -> result); + break; case OP_COMPLEMENTATION: case OP_UNARY_MINUS: case OP_LOGIC_NOT: @@ -1672,7 +1774,9 @@ push_operator(gen_proc_t * p, oberon_oper_t * oper) break; case OP_ASH: - jvm_generate_ash(p, oper -> left, oper -> right); + case OP_LSH: + case OP_ROT: + jvm_generate_shift(p, op, oper -> left, oper -> right); break; default: gen_error("push_oper: unk op %i", op); @@ -1727,6 +1831,7 @@ store_expr(gen_proc_t * p, oberon_expr_t * dst, oberon_expr_t * src) assert(item -> parent -> is_item); push_item(p, (oberon_item_t *) item -> parent); push_expr(p, item -> args); + check_index(p, item -> args -> result); push_expr(p, src); jvm_generate(p, 1 + 1 + cell_size, 0, "%castore", postfix); break;