index dc04ffe3423a03433323e677b23f82cd1e1513a0..a107efc119eca8a22afc620cbc912e8e284f86fa 100644 (file)
#include <stdio.h>
+#include <stdlib.h>
#include <stdarg.h>
+#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <assert.h>
#include "../../../include/oberon.h"
#include "../../oberon-internals.h"
#include "generator-jvm.h"
+#include "generator-jvm-basic.h"
-char *
-new_string(const char * format, ...)
+// ==========================================
+// ==========================================
+// ==========================================
+
+gen_proc_t *
+jvm_create_proc(struct gen_class * class)
+{
+ gen_proc_t * p = GC_MALLOC(sizeof *p);
+ memset(p, 0, sizeof *p);
+
+ struct gen_register_file * rf = GC_MALLOC(sizeof *rf);
+ memset(rf, 0, sizeof *rf);
+
+ struct gen_stack * stack = GC_MALLOC(sizeof *stack);
+ memset(rf, 0, sizeof *stack);
+
+ p -> rf = rf;
+ p -> stack = stack;
+ p -> class = class;
+ p -> label_id = 0;
+
+ return p;
+}
+
+void
+jvm_generate_function_header(gen_proc_t * p, char * access, char * name, char * signature)
+{
+ struct gen_class * class;
+ class = p -> class;
+
+ /* Делаем процедуру текущей в этом классе */
+ assert(class -> p == NULL);
+ class -> p = p;
+
+ fprintf(class -> fp, ".method %s %s%s\n", access, name, signature);
+ fprintf(class -> fp, " start:\n");
+}
+
+void
+jvm_generate_function_end(gen_proc_t * p)
+{
+ struct gen_class * class;
+ class = p -> class;
+
+ assert(class -> p);
+ class -> p = NULL;
+
+ int pointer = p -> stack -> pointer;
+ int max_pointer = p -> stack -> max_pointer;
+ int locals = p -> rf -> num_used;
+ int max_locals = p -> rf -> max_used;
+
+ fprintf(class -> fp, " .limit stack %i \t; current(%i)\n", max_pointer, pointer);
+ fprintf(class -> fp, " .limit locals %i \t; current(%i)\n", max_locals, locals);
+ fprintf(class -> fp, " end:\n");
+ fprintf(class -> fp, ".end method\n\n");
+}
+
+struct gen_class *
+jvm_create_class(char * full_name)
+{
+ struct gen_class * class = GC_MALLOC(sizeof *class);
+ memset(class, 0, sizeof *class);
+
+ char * fname = new_string("%s.j", full_name);
+ class -> full_name = new_string(full_name);
+ class -> fp = fopen(fname, "w");
+ assert(class -> fp);
+
+ return class;
+}
+
+static void
+jvm_destroy_class(struct gen_class * class)
+{
+ assert(class -> p == NULL);
+ fclose(class -> fp);
+}
+
+static void
+jvm_stack_push(gen_proc_t * p, unsigned size)
+{
+ p -> stack -> pointer += size;
+ if(p -> stack -> pointer > p -> stack -> max_pointer)
+ {
+ p -> stack -> max_pointer = p -> stack -> pointer;
+ }
+}
+
+static void
+jvm_stack_pop(gen_proc_t * p, unsigned size)
+{
+ p -> stack -> pointer -= size;
+
+ if(p -> stack -> pointer < 0)
+ {
+ printf("WARING: stack pointer %i\n", p -> stack -> pointer);
+ }
+}
+
+static void
+jvm_generate(gen_proc_t * p, unsigned get, unsigned push, char * format, ...)
{
va_list ptr;
va_start(ptr, format);
- char buf[1024];
- vsnprintf(buf, 1024, format, ptr);
+ jvm_stack_pop(p, get);
+ fprintf(p -> class -> fp, " ");
+ vfprintf(p -> class -> fp, format, ptr);
+ jvm_stack_push(p, push);
+ fprintf(p -> class -> fp, " \t ;>>>> %i -- %i : current_stack(%i)\n", get, push, p -> stack -> pointer);
va_end(ptr);
+}
- char * result;
- int size;
+static void
+jvm_generate_comment(gen_proc_t * p, char * format, ...)
+{
+ va_list ptr;
+ va_start(ptr, format);
- size = strlen(buf);
- result = GC_MALLOC(size + 1);
- memset(result, 0, size);
- strncpy(result, buf, size);
+ fprintf(p -> class -> fp, " ;;;; ");
+ vfprintf(p -> class -> fp, format, ptr);
+ fprintf(p -> class -> fp, "\n");
- return result;
+ va_end(ptr);
}
-void
-oberon_generator_init_context(oberon_context_t * ctx)
+static void
+jvm_generate_push_int(gen_proc_t * p, int64_t i)
{
- gen_context_t * gen_context = GC_MALLOC(sizeof *gen_context);
- memset(gen_context, 0, sizeof *gen_context);
+ if(i == -1)
+ {
+ jvm_generate(p, 0, 1, "iconst_m1");
+ }
+ else if(i >= 0 && i <= 5)
+ {
+ jvm_generate(p, 0, 1, "iconst_%li", i);
+ }
+ else if(i >= -128 && i <= 127)
+ {
+ jvm_generate(p, 0, 1, "bipush %li", i);
+ }
+ else if(i >= -32768 && i <= 32767)
+ {
+ jvm_generate(p, 0, 1, "sipush %li", i);
+ }
+ else if(i >= -2147483648 && i <= 2147483647)
+ {
+ jvm_generate(p, 0, 1, "ldc %li", i);
+ }
+ else
+ {
+ jvm_generate(p, 0, 2, "ldc2_w %li", i);
+ }
+}
- ctx -> gen_context = gen_context;
+static void
+jvm_generate_push_int_size(gen_proc_t * p, int64_t i, int size)
+{
+ int pushed_cell = 1;
+
+ if(i == -1)
+ {
+ jvm_generate(p, 0, 1, "iconst_m1");
+ }
+ else if(i >= 0 && i <= 5)
+ {
+ jvm_generate(p, 0, 1, "iconst_%li", i);
+ }
+ else if(i >= -128 && i <= 127)
+ {
+ jvm_generate(p, 0, 1, "bipush %li", i);
+ }
+ else if(i >= -32768 && i <= 32767)
+ {
+ jvm_generate(p, 0, 1, "sipush %li", i);
+ }
+ else if(i >= -2147483648 && i <= 2147483647)
+ {
+ jvm_generate(p, 0, 1, "ldc %li", i);
+ }
+ else
+ {
+ pushed_cell = 2;
+ jvm_generate(p, 0, 2, "ldc2_w %li", i);
+ }
+
+ assert(size <= 8);
+ if(size > 4 && pushed_cell == 1)
+ {
+ jvm_generate(p, pushed_cell, 2, "i2l");
+ }
+ else if(size <= 4)
+ {
+ if(pushed_cell > 1)
+ {
+ jvm_generate(p, 2, 1, "l2i");
+ }
+
+ if(size == 2)
+ {
+ jvm_generate(p, 1, 1, "i2s");
+ }
+ else if(size == 1)
+ {
+ jvm_generate(p, 1, 1, "i2b");
+ }
+ }
}
-void
-oberon_generator_destroy_context(oberon_context_t * ctx)
+static void
+jvm_generate_push_float(gen_proc_t * p, double f, int size)
+{
+ if(size <= 4)
+ {
+ if(f == 0.0)
+ {
+ jvm_generate(p, 0, 1, "fconst_0");
+ }
+ if(f == 1.0)
+ {
+ jvm_generate(p, 0, 1, "fconst_1");
+ }
+ if(f == 2.0)
+ {
+ jvm_generate(p, 0, 1, "fconst_2");
+ }
+ else
+ {
+ jvm_generate(p, 0, 1, "ldc %lf", f);
+ }
+ }
+ else
+ {
+ if(f == 0.0)
+ {
+ jvm_generate(p, 0, 2, "dconst_0");
+ }
+ if(f == 1.0)
+ {
+ jvm_generate(p, 0, 2, "dconst_1");
+ }
+ else
+ {
+ jvm_generate(p, 0, 2, "ldc2_w %lf", f);
+ }
+ }
+}
+
+static void
+jvm_generate_push_string(gen_proc_t * p, char * str, int char_size)
{
- ctx -> gen_context = NULL;
+ assert(char_size == 1);
+ int len = strlen(str);
+
+ jvm_generate_push_int(p, len + 1);
+ jvm_generate(p, 1, 1, "newarray byte");
+
+ for(int i = 0; i < len; i++)
+ {
+ jvm_generate(p, 1, 2, "dup");
+ jvm_generate_push_int(p, i);
+ jvm_generate_push_int(p, str[i]);
+ jvm_generate(p, 3, 0, "bastore");
+ }
}
-static char * get_class_full_name(oberon_context_t * ctx, oberon_type_t * type);
+static gen_var_t *
+oberon_generator_new_var()
+{
+ gen_var_t * v = GC_MALLOC(sizeof *v);
+ memset(v, 0, sizeof *v);
+ return v;
+}
+
+static void
+jvm_generate_and_init_global_var(gen_var_t * v, struct gen_class * class, char * access, char * name, char * desc)
+{
+ assert(class -> p == NULL);
+ fprintf(class -> fp, ".field %s static %s %s\n\n", access, name, desc);
+
+ v -> storage = JVM_STORAGE_STATIC;
+ v -> full_name = new_string("%s/%s", class -> full_name, name);
+ v -> desc = new_string(desc);
+}
+
+static void
+jvm_generate_and_init_field(gen_var_t * v, struct gen_class * class, char * access, char * name, char * desc)
+{
+ assert(class -> p == NULL);
+ fprintf(class -> fp, ".field %s %s %s\n\n", access, name, desc);
+
+ v -> storage = JVM_STORAGE_FIELD;
+ v -> full_name = new_string("%s/%s", class -> full_name, name);
+ v -> desc = new_string(desc);
+}
+
+static void
+jvm_generate_and_init_local_var(gen_var_t * v, gen_proc_t * p, bool wide)
+{
+ v -> storage = JVM_STORAGE_REGISTER;
+ v -> reg = jvm_alloc_register_untyped(p -> rf, wide);
+}
+
+static void
+jvm_generate_and_init_named_local_var(gen_var_t * v, gen_proc_t * p, bool wide, char * name, char * desc)
+{
+ jvm_generate_and_init_local_var(v, p, wide);
+ v -> desc = new_string(desc);
+ jvm_generate(p, 0, 0, ".var %i is %s %s from start to end", v -> reg, name, desc);
+}
+
+static int
+jvm_new_label_id(gen_proc_t * p)
+{
+ int label_id = p -> label_id;
+ p -> label_id += 1;
+ return label_id;
+}
static char *
-get_descriptor(oberon_context_t * ctx, oberon_type_t * type)
+jvm_get_label_name(int label_id)
{
- char * desc;
+ return new_string("L%i", label_id);
+}
- switch(type -> class)
+static void
+jvm_generate_label(gen_proc_t * p, int label_id)
+{
+ jvm_generate(p, 0, 0, "L%i:", label_id);
+}
+
+static void
+jvm_generate_load(gen_proc_t * p, oberon_type_t * src_type, gen_var_t * src)
+{
+ char prefix;
+ int cell_size;
+
+ cell_size = jvm_cell_size_for_type(src_type);
+
+ switch(src -> storage)
{
- case OBERON_TYPE_VOID:
- return new_string("V");
- break;
- case OBERON_TYPE_INTEGER:
- switch(type -> size)
- {
- case 1:
- return new_string("B");
- break;
- case 2:
- return new_string("S");
- break;
- case 4:
- return new_string("I");
- break;
- case 8:
- return new_string("J");
- break;
- default:
- oberon_error(ctx, "get_descriptor: unsupported int size %i", type -> size);
- break;
- }
- break;
- case OBERON_TYPE_REAL:
- switch(type -> size)
- {
- case 4:
- return new_string("F");
- break;
- case 8:
- return new_string("D");
- break;
- default:
- oberon_error(ctx, "get_descriptor: unsupported float size %i", type -> size);
- break;
- }
- break;
- case OBERON_TYPE_BOOLEAN:
- return new_string("Z");
+ case JVM_STORAGE_REGISTER:
+ prefix = jvm_get_prefix(src_type);
+ jvm_generate(p, 0, cell_size, "%cload %i", prefix, src -> reg);
break;
- case OBERON_TYPE_PROCEDURE:
- case OBERON_TYPE_RECORD:
- desc = get_class_full_name(ctx, type);
- return new_string("L%s;", desc);
+ case JVM_STORAGE_STATIC:
+ jvm_generate(p, 0, cell_size, "getstatic %s %s", src -> full_name, src -> desc);
break;
- case OBERON_TYPE_ARRAY:
- desc = get_descriptor(ctx, type -> base);
- return new_string("[%s", desc);
+ case JVM_STORAGE_FIELD:
+ jvm_generate(p, 1, cell_size, "getfield %s %s", src -> full_name, src -> desc);
break;
default:
- oberon_error(ctx, "print_descriptor: unsupported type class %i", type -> class);
+ gen_error("jvm_generate_load: unknow storage type %i", src -> storage);
break;
}
-
- return NULL;
}
-static char
-get_prefix(oberon_context_t * ctx, oberon_type_t * type)
+static void
+jvm_generate_store(gen_proc_t * p, oberon_type_t * src_type, gen_var_t * dst)
{
- int size = type -> size;
- switch(type -> class)
+ char prefix;
+ int cell_size;
+
+ cell_size = jvm_cell_size_for_type(src_type);
+
+ switch(dst -> storage)
{
- case OBERON_TYPE_BOOLEAN:
- case OBERON_TYPE_INTEGER:
- return (size <= 4) ? ('i') : ('l');
+ case JVM_STORAGE_REGISTER:
+ prefix = jvm_get_prefix(src_type);
+ jvm_generate(p, cell_size, 0, "%cstore %i", prefix, dst -> reg);
break;
- case OBERON_TYPE_PROCEDURE:
- case OBERON_TYPE_ARRAY:
- case OBERON_TYPE_RECORD:
- case OBERON_TYPE_POINTER:
- return 'a';
+ case JVM_STORAGE_STATIC:
+ jvm_generate(p, cell_size, 0, "putstatic %s %s", dst -> full_name, dst -> desc);
break;
- case OBERON_TYPE_REAL:
- return (size <= 4) ? ('f') : ('d');
+ case JVM_STORAGE_FIELD:
+ jvm_generate(p, 1 + cell_size, 0, "putfield %s %s", dst -> full_name, dst -> desc);
+ break;
+ default:
+ gen_error("jvm_generate_store: unknow storage type %i", dst -> storage);
break;
}
-
- oberon_error(ctx, "get_prefix: wat");
- return '!';
}
-static char *
-get_field_full_name(oberon_context_t * ctx, oberon_object_t * x)
+static void
+jvm_generate_new(gen_proc_t * p, oberon_type_t * type, int num);
+
+/*
+ * Генерирует код для инициализации массива со статическим базовым типом
+ * ( aref -- )
+ */
+
+static void
+jvm_generate_array_initialization(gen_proc_t * p, oberon_type_t * arr)
{
- return new_string("%s/%s", x -> module -> name, x -> name);
+ int dim = 0;
+ oberon_type_t * base = arr;
+ while(base -> class == OBERON_TYPE_ARRAY)
+ {
+ dim += 1;
+ base = base -> base;
+ }
+
+ if(base -> class != OBERON_TYPE_RECORD)
+ {
+ jvm_generate(p, 1, 0, "pop");
+ return;
+ }
+
+ struct {
+ gen_var_t * index;
+ gen_var_t * length;
+ int start;
+ int end;
+ } loop[dim];
+
+ gen_var_t * dst = oberon_generator_new_var();
+ jvm_generate_and_init_local_var(dst, p, false);
+ jvm_generate_store(p, arr, dst);
+
+ /*
+ * Входящие параметры заграблены.
+ * Теперь генерируем эквивалентный код:
+ * int i = 0;
+ * int len = dst.length
+ * while(i < len)
+ * {
+ * ...
+ * {
+ * dst[i, ...] = new record;
+ * }
+ * ...
+ * i += 1;
+ * }
+ * Где "..." такой же код (начало и конец) для следующей размерности.
+ */
+
+ for(int i = 0; i < dim; i++)
+ {
+ loop[i].index = oberon_generator_new_var();
+ loop[i].length = oberon_generator_new_var();
+ loop[i].start = jvm_new_label_id(p);
+ loop[i].end = jvm_new_label_id(p);
+ jvm_generate_and_init_local_var(loop[i].index, p, false);
+ jvm_generate_and_init_local_var(loop[i].length, p, false);
+
+ /* TODO преределать через jvm_generate_load{{store}} */
+
+ jvm_generate(p, 0, 1, "iconst_0");
+ jvm_generate(p, 1, 0, "istore %i", loop[i].index -> reg);
+
+ jvm_generate_load(p, arr, dst);
+ jvm_generate(p, 1, 1, "arraylength");
+ jvm_generate(p, 1, 0, "istore %i", loop[i].length -> reg);
+
+ /* if(i >= len) goto end; */
+ jvm_generate_label(p, loop[i].start);
+ jvm_generate(p, 0, 1, "iload %i", loop[i].index -> reg);
+ jvm_generate(p, 0, 1, "iload %i", loop[i].length -> reg);
+ jvm_generate(p, 2, 0, "if_icmpge L%i", loop[i].end);
+ }
+
+ jvm_generate_load(p, arr, dst);
+ jvm_generate(p, 0, 1, "iload %i", loop[0].index -> reg);
+ for(int i = 1; i < dim; i++)
+ {
+ jvm_generate(p, 2, 1, "aaload");
+ jvm_generate(p, 0, 1, "iload %i", loop[i].index -> reg);
+ }
+ jvm_generate_new(p, base, 0);
+ jvm_generate(p, 3, 0, "aastore");
+
+ for(int i = dim - 1; i >= 0; i--)
+ {
+ jvm_generate(p, 0, 0, "iinc %i 1", loop[i].index -> reg);
+ jvm_generate(p, 0, 0, "goto L%i", loop[i].start);
+ jvm_generate_label(p, loop[i].end);
+ }
}
-static char *
-get_class_full_name(oberon_context_t * ctx, oberon_type_t * type)
+static void
+jvm_generate_new(gen_proc_t * p, oberon_type_t * type, int num)
{
- int rec_id;
- char * name = NULL;
+ int dim;
+ char * cname;
+ char * desc;
+ oberon_type_t * base;
switch(type -> class)
{
+ case OBERON_TYPE_INTEGER:
+ case OBERON_TYPE_BOOLEAN:
case OBERON_TYPE_PROCEDURE:
- name = new_string("SYSTEM$PROCEDURE");
-
- char * desc;
- desc = get_descriptor(ctx, type -> base);
- name = new_string("%s$%s", name, desc);
-
- int num = type -> num_decl;
- oberon_object_t * arg = type -> decl;
- for(int i = 0; i < num; i++)
+ case OBERON_TYPE_REAL:
+ case OBERON_TYPE_POINTER:
+ gen_error("jvm_generate_new_static: static alocation not allowed");
+ break;
+ case OBERON_TYPE_RECORD:
+ assert(num == 0);
+ cname = jvm_get_class_full_name(type);
+ jvm_generate(p, 0, 1, "new %s", cname);
+ jvm_generate(p, 1, 2, "dup");
+ jvm_generate(p, 1, 0, "invokespecial %s/<init>()V", cname);
+ break;
+ case OBERON_TYPE_ARRAY:
+ dim = 0;
+ base = type;
+ desc = jvm_get_descriptor(type);
+ while(base -> class == OBERON_TYPE_ARRAY)
{
- desc = get_descriptor(ctx, arg -> type);
- name = new_string("%s%s", name, desc);
- arg = arg -> next;
+ if(num > 0)
+ {
+ assert(base -> size == 0);
+ num -= 1;
+ }
+ else
+ {
+ assert(base -> size > 0);
+ jvm_generate_push_int(p, base -> size);
+ }
+ dim += 1;
+ base = base -> base;
}
- break;
- case OBERON_TYPE_RECORD:
- assert(type -> module);
- assert(type -> module -> gen_mod);
- rec_id = type -> gen_type -> rec_id;
- name = new_string("%s$RECORD%i", type -> module -> name, rec_id);
+ assert(num == 0);
+ jvm_generate(p, dim, 1, "multianewarray %s %i", desc, dim);
+ jvm_generate(p, 1, 2, "dup");
+ jvm_generate_array_initialization(p, type);
break;
default:
- oberon_error(ctx, "get_record_full_name: unk type class %i", type -> class);
+ gen_error("jvm_generate_new_static: unk type class %i", type -> class);
break;
}
+}
- return name;
+/*
+ * Генерирует код для копирования полей из первой записи во вторую.
+ * ( aref_dst aref_src -- )
+ * dst := src;
+ */
+
+static void
+jvm_generate_copy_record(gen_proc_t * p, oberon_type_t * rec)
+{
+ assert(rec -> class == OBERON_TYPE_RECORD);
+ char * desc = jvm_get_descriptor(rec);
+ char * cname = jvm_get_class_full_name(rec);
+ jvm_generate(p, 1 + 1, 0, "invokestatic %s/$COPY$(%s%s)V", cname, desc, desc);
}
-static char *
-get_procedure_signature(oberon_context_t * ctx, oberon_type_t * proc)
+/*
+ * Генерирует кода для копирования массивов.
+ * ( aref_dst aref_src -- )
+ * dst := src;
+ */
+
+static void
+jvm_generate_copy_array(gen_proc_t * p, oberon_type_t * arr)
{
- char * signature;
- char * desc;
+ int dim = 0;
+ oberon_type_t * base = arr;
+ while(base -> class == OBERON_TYPE_ARRAY)
+ {
+ dim += 1;
+ base = base -> base;
+ }
- signature = new_string("(");
+ struct {
+ gen_var_t * index;
+ gen_var_t * length;
+ int start;
+ int end;
+ } loop[dim];
+
+ gen_var_t * dst = oberon_generator_new_var();
+ gen_var_t * src = oberon_generator_new_var();
+ jvm_generate_and_init_local_var(dst, p, false);
+ jvm_generate_and_init_local_var(src, p, false);
+
+ jvm_generate_store(p, arr, src);
+ jvm_generate_store(p, arr, dst);
+
+ /*
+ * Входящие параметры заграблены.
+ * Теперь генерируем эквивалентный код:
+ * int i = 0;
+ * int len = src.length
+ * while(i < len)
+ * {
+ * ...
+ * {
+ * copy from src[i, ...] to dst[i, ...];
+ * }
+ * ...
+ * i += 1;
+ * }
+ * Где "..." такой же код (начало и конец) для следующей размерности.
+ */
+
+ for(int i = 0; i < dim; i++)
+ {
+ loop[i].index = oberon_generator_new_var();
+ loop[i].length = oberon_generator_new_var();
+ loop[i].start = jvm_new_label_id(p);
+ loop[i].end = jvm_new_label_id(p);
+ jvm_generate_and_init_local_var(loop[i].index, p, false);
+ jvm_generate_and_init_local_var(loop[i].length, p, false);
+
+ /* TODO преределать через jvm_generate_load{{store}} */
+
+ jvm_generate(p, 0, 1, "iconst_0");
+ jvm_generate(p, 1, 0, "istore %i", loop[i].index -> reg);
+
+ jvm_generate_load(p, arr, src);
+ jvm_generate(p, 1, 1, "arraylength");
+ jvm_generate(p, 1, 0, "istore %i", loop[i].length -> reg);
+
+ /* if(i >= len) goto end; */
+ jvm_generate_label(p, loop[i].start);
+ jvm_generate(p, 0, 1, "iload %i", loop[i].index -> reg);
+ jvm_generate(p, 0, 1, "iload %i", loop[i].length -> reg);
+ jvm_generate(p, 2, 0, "if_icmpge L%i", loop[i].end);
+ }
- int num = proc -> num_decl;
- oberon_object_t * arg = proc -> decl;
- for(int i = 0; i < num; i++)
+ if(base -> class == OBERON_TYPE_RECORD)
{
- desc = get_descriptor(ctx, arg -> type);
- signature = new_string("%s%s", signature, desc);
- arg = arg -> next;
+ /* Получаем записи по индексам ( -- dst src ) */
+
+ jvm_generate_load(p, arr, dst);
+ for(int i = 0; i < dim; i++)
+ {
+ jvm_generate(p, 0, 1, "iload %i", loop[i].index -> reg);
+ jvm_generate(p, 2, 1, "aaload");
+ }
+
+ jvm_generate_load(p, arr, src);
+ for(int i = 0; i < dim; i++)
+ {
+ jvm_generate(p, 0, 1, "iload %i", loop[i].index -> reg);
+ jvm_generate(p, 2, 1, "aaload");
+ }
+
+ /* Копируем записи ( dst src -- ) */
+ jvm_generate_copy_record(p, base);
}
+ else
+ {
+ char postfix = jvm_get_postfix(base);
+ int cell_size = jvm_cell_size_for_postfix(postfix);
- desc = get_descriptor(ctx, proc -> base);
- signature = new_string("%s)%s", signature, desc);
+ /* Получаем массивы и индексы ( -- dst i src i ) */
- return signature;
+ jvm_generate_load(p, arr, dst);
+ jvm_generate(p, 0, 1, "iload %i", loop[0].index -> reg);
+ for(int i = 1; i < dim; i++)
+ {
+ jvm_generate(p, 2, 1, "aaload");
+ jvm_generate(p, 0, 1, "iload %i", loop[i].index -> reg);
+ }
+
+ jvm_generate_load(p, arr, src);
+ jvm_generate(p, 0, 1, "iload %i", loop[0].index -> reg);
+ for(int i = 1; i < dim; i++)
+ {
+ jvm_generate(p, 2, 1, "aaload");
+ jvm_generate(p, 0, 1, "iload %i", loop[i].index -> reg);
+ }
+
+ /* Копируем значения ( dst i src i -- ) */
+ jvm_generate(p, 2, cell_size, "%caload", postfix);
+ jvm_generate(p, 2 + cell_size, 0, "%castore", postfix);
+ }
+
+ for(int i = dim - 1; i >= 0; i--)
+ {
+ jvm_generate(p, 0, 0, "iinc %i 1", loop[i].index -> reg);
+ jvm_generate(p, 0, 0, "goto L%i", loop[i].start);
+ jvm_generate_label(p, loop[i].end);
+ }
+}
+
+static void
+jvm_generate_push_procedure_pointer(gen_proc_t * p, oberon_object_t * proc)
+{
+ char * full_name = jvm_get_field_full_name_safe(proc);
+ char * desc = jvm_get_descriptor(proc -> type);
+ jvm_generate(p, 0, 1, "getstatic %s/pointer %s", full_name, desc);
+}
+
+// ==========================================
+// ==========================================
+// ==========================================
+
+static void
+push_item(gen_proc_t * p, oberon_item_t * item);
+
+void
+oberon_generator_init_context(oberon_context_t * ctx)
+{
+ gen_context_t * gen_context = GC_MALLOC(sizeof *gen_context);
+ memset(gen_context, 0, sizeof *gen_context);
+
+ ctx -> gen_context = gen_context;
+}
+
+void
+oberon_generator_destroy_context(oberon_context_t * ctx)
+{
}
static void
-oberon_generate_procedure_class(oberon_context_t * ctx, oberon_type_t * proc)
+oberon_generate_procedure_class(oberon_type_t * proc)
{
FILE * fp;
char * cname;
- char * fname;
char * signature;
+ struct gen_class * class;
- cname = get_class_full_name(ctx, proc);
- fname = new_string("%s.j", cname);
-
- fp = fopen(fname, "w");
+ cname = jvm_get_class_full_name(proc);
+ class = jvm_create_class(cname);
+ fp = class -> fp;
fprintf(fp, ".source SYSTEM\n");
fprintf(fp, ".class public abstract %s\n", cname);
fprintf(fp, ".super java/lang/Object\n\n");
- signature = get_procedure_signature(ctx, proc);
-
- fprintf(fp, ".method public <init>()V\n");
+ fprintf(fp, ".method <init>()V\n");
fprintf(fp, " aload_0\n");
fprintf(fp, " invokespecial java/lang/Object/<init>()V\n");
fprintf(fp, " return\n");
fprintf(fp, ".end method\n\n");
+ signature = jvm_get_procedure_signature(proc);
+
fprintf(fp, ".method public abstract invoke%s\n", signature);
fprintf(fp, ".end method\n\n");
- fclose(fp);
+ jvm_destroy_class(class);
}
static void
-oberon_generate_record_class(oberon_context_t * ctx, oberon_type_t * rec)
+oberon_generate_procedure_pointer_class(oberon_object_t * proc)
{
FILE * fp;
char * cname;
- char * fname;
+ char * abscname;
+ char * absdesc;
+ char * signature;
+ struct gen_class * class;
+
+ cname = jvm_get_field_full_name_safe(proc);
+ class = jvm_create_class(cname);
+ abscname = jvm_get_class_full_name(proc -> type);
+ absdesc = jvm_get_descriptor(proc -> type);
+ fp = class -> fp;
+
+ fprintf(fp, ".source %s\n", proc -> module -> name);
+ fprintf(fp, ".class public %s\n", cname);
+ fprintf(fp, ".super %s\n\n", abscname);
+
+ fprintf(fp, ".field public static pointer %s\n\n", absdesc);
+
+ fprintf(fp, ".method <init>()V\n");
+ fprintf(fp, " aload_0\n");
+ fprintf(fp, " invokespecial %s/<init>()V\n", abscname);
+ fprintf(fp, " return\n");
+ fprintf(fp, ".end method\n\n");
+
+ fprintf(fp, ".method static <clinit>()V\n");
+ fprintf(fp, " .limit stack 2\n");
+ fprintf(fp, " new %s\n", cname);
+ fprintf(fp, " dup\n");
+ fprintf(fp, " invokespecial %s/<init>()V\n", cname);
+ fprintf(fp, " putstatic %s/pointer %s\n", cname, absdesc);
+ fprintf(fp, " return\n");
+ fprintf(fp, ".end method\n\n");
+
+ signature = jvm_get_procedure_signature(proc -> type);
+
+ gen_proc_t * p;
+ gen_var_t * this_v;
+
+ p = jvm_create_proc(class);
+ jvm_generate_function_header(p, "public", "invoke", signature);
+
+ this_v = oberon_generator_new_var();
+ jvm_generate_and_init_local_var(this_v, p, false);
+
+ gen_var_t * v;
+ int use_size = 0;
+ int num = proc -> type -> num_decl;
+ oberon_object_t * arg = proc -> type -> decl;
+ for(int i = 0; i < num; i++)
+ {
+ v = oberon_generator_new_var();
+ bool wide = jvm_is_wide_type(arg -> type);
+ char * desc = jvm_get_descriptor(arg -> type);
+ jvm_generate_and_init_named_local_var(v, p, wide, arg -> name, desc);
+
+ jvm_generate_load(p, arg -> type, v);
+
+ use_size += (wide) ? (2) : (1);
+
+ arg = arg -> next;
+ }
+
+ char * full_name = jvm_get_field_full_name(proc);
+ int cell_size = jvm_cell_size_for_type(proc -> type -> base);
+
+ jvm_generate(p, use_size, cell_size, "invokestatic %s%s", full_name, signature);
+
+ if(proc -> type -> base -> class == OBERON_TYPE_VOID)
+ {
+ jvm_generate(p, 0, 0, "return");
+ }
+ else
+ {
+ char prefix = jvm_get_prefix(proc -> type -> base);
+ jvm_generate(p, cell_size, 0, "%creturn", prefix);
+ }
+
+ jvm_generate_function_end(p);
+
+ jvm_destroy_class(class);
+}
+
+static void
+oberon_generate_record_class(gen_module_t * m, oberon_type_t * rec)
+{
+ char * cname;
+ struct gen_class * class;
/* Устанавливаем новоый id */
- rec -> gen_type -> rec_id = rec -> module -> gen_mod -> rec_id;
- rec -> module -> gen_mod -> rec_id += 1;
+ rec -> gen_type -> rec_id = m -> rec_id;
+ m -> rec_id += 1;
- cname = get_class_full_name(ctx, rec);
- fname = new_string("%s.j", cname);
+ cname = jvm_get_class_full_name(rec);
+ class = jvm_create_class(cname);
- fp = fopen(fname, "w");
+ fprintf(class -> fp, ".source %s\n", rec -> module -> name);
+ fprintf(class -> fp, ".class public %s\n", cname);
- fprintf(fp, ".source %s\n", rec -> module -> name);
- fprintf(fp, ".class public %s\n", cname);
- fprintf(fp, ".super java/lang/Object\n\n");
+ if(rec -> base == NULL)
+ {
+ fprintf(class -> fp, ".super java/lang/Object\n\n");
+ }
+ else
+ {
+ class -> base = rec -> base -> gen_type -> class;
+ fprintf(class -> fp, ".super %s\n\n", class -> base -> full_name);
+ }
- rec -> gen_type -> fp = fp;
+ rec -> gen_type -> class = class;
}
void
case OBERON_TYPE_BOOLEAN:
case OBERON_TYPE_ARRAY:
case OBERON_TYPE_REAL:
+ case OBERON_TYPE_CHAR:
+ case OBERON_TYPE_STRING:
+ case OBERON_TYPE_SET:
break;
case OBERON_TYPE_RECORD:
- oberon_generate_record_class(ctx, type);
+ ;
+ gen_module_t * m;
+ m = type -> module -> gen_mod;
+ oberon_generate_record_class(m, type);
break;
case OBERON_TYPE_PROCEDURE:
- oberon_generate_procedure_class(ctx, type);
+ oberon_generate_procedure_class(type);
break;
case OBERON_TYPE_POINTER:
- assert(type -> base -> class == OBERON_TYPE_VOID);
break;
default:
- oberon_error(ctx, "oberon_generator_init_type: unk calss %i", type -> class);
- break;
- }
-}
-
-static void
-oberon_generate_object(oberon_context_t * ctx, FILE * fp, oberon_object_t * x)
-{
- char * name;
- char * desc;
-
- name = x -> name;
- desc = get_descriptor(ctx, x -> type);
- switch(x -> class)
- {
- case OBERON_CLASS_VAR:
- fprintf(fp, ".field public static %s %s\n\n", name, desc);
- break;
- case OBERON_CLASS_FIELD:
- fprintf(fp, ".field public %s %s\n\n", name, desc);
- break;
- default:
- oberon_error(ctx, "oberon_generate_object: unk class %i", x -> class);
+ gen_error("oberon_generator_init_type: unk calss %i", type -> class);
break;
}
}
@@ -315,366 +907,762 @@ oberon_generate_object(oberon_context_t * ctx, FILE * fp, oberon_object_t * x)
void
oberon_generator_init_record(oberon_context_t * ctx, oberon_type_t * rec)
{
- FILE * fp;
-
- fp = rec -> gen_type -> fp;
+ struct gen_class * class;
+ class = rec -> gen_type -> class;
int num = rec -> num_decl;
oberon_object_t * field = rec -> decl;
for(int i = 0; i < num; i++)
{
- oberon_generate_object(ctx, fp, field);
+ gen_var_t * v = field -> gen_var;
+ char * name = field -> name;
+ char * desc = jvm_get_descriptor(field -> type);
+ jvm_generate_and_init_field(v, class, "public", name, desc);
field = field -> next;
}
- fprintf(fp, ".method public <init>()V\n");
- fprintf(fp, " aload_0\n");
- fprintf(fp, " invokespecial java/lang/Object/<init>()V\n");
- fprintf(fp, " return\n");
- fprintf(fp, ".end method\n");
+ /* Стандартный конструктор класса */
+ /* Инициализирует внутренние статические записи и массивы */
+ gen_proc_t * p = jvm_create_proc(class);
+ jvm_generate_function_header(p, "public", "<init>", "()V");
+ jvm_alloc_register_untyped(p -> rf, false);
+ jvm_generate(p, 0, 1, "aload_0");
+ if(class -> base)
+ {
+ jvm_generate(p, 1, 0, "invokespecial %s/<init>()V", class -> base -> full_name);
+ }
+ else
+ {
+ jvm_generate(p, 1, 0, "invokespecial java/lang/Object/<init>()V");
+ }
+ num = rec -> num_decl;
+ field = rec -> decl;
+ for(int i = 0; i < num; i++)
+ {
+ if(field -> type -> class == OBERON_TYPE_RECORD
+ || field -> type -> class == OBERON_TYPE_ARRAY)
+ {
+ jvm_generate(p, 0, 1, "aload_0");
+ jvm_generate_new(p, field -> type, 0);
+ jvm_generate_store(p, field -> type, field -> gen_var);
+ }
+ field = field -> next;
+ }
+ jvm_generate(p, 0, 0, "return");
+ jvm_generate_function_end(p);
+
+ /* Метод для копирования полей класса */
+ /* reg0 == src -> reg1 == dst */
+ p = jvm_create_proc(class);
+ gen_var_t * copy_dst = oberon_generator_new_var();
+ gen_var_t * copy_src = oberon_generator_new_var();
+ char * desc = jvm_get_descriptor(rec);
+ char * signature = new_string("(%s%s)V", desc, desc);
+ jvm_generate_function_header(p, "public static", "$COPY$", signature);
+ jvm_generate_and_init_named_local_var(copy_dst, p, false, "dst", desc);
+ jvm_generate_and_init_named_local_var(copy_src, p, false, "src", desc);
+ num = rec -> num_decl;
+ field = rec -> decl;
+ for(int i = 0; i < num; i++)
+ {
+ if(field -> type -> class == OBERON_TYPE_RECORD)
+ {
+ jvm_generate_load(p, rec, copy_dst);
+ jvm_generate_load(p, field -> type, field -> gen_var);
+ jvm_generate_load(p, rec, copy_src);
+ jvm_generate_load(p, field -> type, field -> gen_var);
+ jvm_generate_copy_record(p, field -> type);
+ }
+ else if(field -> type -> class == OBERON_TYPE_ARRAY)
+ {
+ jvm_generate_load(p, rec, copy_dst);
+ jvm_generate_load(p, field -> type, field -> gen_var);
+ jvm_generate_load(p, rec, copy_src);
+ jvm_generate_load(p, field -> type, field -> gen_var);
+ jvm_generate_copy_array(p, field -> type);
+ }
+ else
+ {
+ jvm_generate_load(p, rec, copy_dst);
+ jvm_generate_load(p, rec, copy_src);
+ jvm_generate_load(p, field -> type, field -> gen_var);
+ jvm_generate_store(p, field -> type, field -> gen_var);
+ }
+ field = field -> next;
+ }
+ jvm_generate(p, 0, 0, "return");
+ jvm_generate_function_end(p);
- fclose(fp);
+ jvm_destroy_class(class);
}
void
oberon_generator_init_var(oberon_context_t * ctx, oberon_object_t * var)
{
- gen_var_t * v = GC_MALLOC(sizeof *v);
- memset(v, 0, sizeof *v);
+ gen_var_t * v = oberon_generator_new_var();
var -> gen_var = v;
- gen_module_t * m = ctx -> mod -> gen_mod;
+ gen_module_t * m;
+ m = ctx -> mod -> gen_mod;
+
+ struct gen_class * class;
+ class = m -> class;
+ char * desc;
switch(var -> class)
{
case OBERON_CLASS_VAR_PARAM:
- oberon_error(ctx, "generator: VAR-parameters not implemented");
+ gen_error("generator: VAR-parameters not implemented");
break;
case OBERON_CLASS_PARAM:
+ /* Заполняется при генерации функции */
+ /* смотри jvm_init_local_object() */
+ break;
case OBERON_CLASS_FIELD:
+ /* Заполняются при инициализации структуры */
+ /* смотри oberon_generator_init_record() */
break;
case OBERON_CLASS_VAR:
- oberon_generate_object(ctx, m -> fp, var);
+ /* Локальные заполняются при генерации функции */
+ /* смотри jvm_init_local_object() */
+ if(var -> local == 0)
+ {
+ desc = jvm_get_descriptor(var -> type);
+ jvm_generate_and_init_global_var(v, class, "public", var -> name, desc);
+ }
break;
default:
- oberon_error(ctx, "oberon_generator_init_var: unk var class %i", var -> class);
+ gen_error("oberon_generator_init_var: unk var class %i", var -> class);
break;
}
}
+void
+oberon_generator_init_temp_var(oberon_context_t * ctx, oberon_object_t * var)
+{
+ assert(var -> class == OBERON_CLASS_VAR);
+
+ gen_var_t * v = oberon_generator_new_var();
+ var -> gen_var = v;
+
+ gen_module_t * m;
+ m = ctx -> mod -> gen_mod;
+
+ gen_proc_t * p;
+ p = m -> class -> p;
+
+ bool wide;
+ wide = jvm_is_wide_type(var -> type);
+
+ jvm_generate_and_init_local_var(v, p, wide);
+}
+
void
oberon_generator_init_proc(oberon_context_t * ctx, oberon_object_t * proc)
{
- gen_proc_t * p = GC_MALLOC(sizeof *p);
- memset(p, 0, sizeof *p);
- proc -> gen_proc = p;
+ struct gen_class * class = proc -> module -> gen_mod -> class;
+ proc -> gen_proc = jvm_create_proc(class);
if(proc -> local)
{
- oberon_error(ctx, "generator: local procedures not implemented");
+ gen_error("generator: local procedures not implemented");
+ }
+
+ oberon_generate_procedure_pointer_class(proc);
+}
+
+void
+oberon_generator_init_module(oberon_context_t * ctx, oberon_module_t * mod)
+{
+ gen_module_t * m = GC_MALLOC(sizeof *m);
+ memset(m, 0, sizeof *m);
+ mod -> gen_mod = m;
+
+ struct gen_class * class;
+ class = jvm_create_class(mod -> name);
+
+ fprintf(class -> fp, ".source %s\n", mod -> name);
+ fprintf(class -> fp, ".class %s\n", mod -> name);
+ fprintf(class -> fp, ".super java/lang/Object\n\n");
+
+ m -> class = class;
+
+ ctx -> gen_context -> current_m = m;
+}
+
+void
+oberon_generator_fini_module(oberon_module_t * mod)
+{
+ jvm_destroy_class(mod -> gen_mod -> class);
+}
+
+static void
+push_expr(gen_proc_t * p, oberon_expr_t * expr);
+
+void
+oberon_generate_begin_module(oberon_context_t * ctx)
+{
+ struct gen_class * class = ctx -> mod -> gen_mod -> class;
+ gen_proc_t * p = jvm_create_proc(class);
+
+ jvm_generate_function_header(p, "public", "<init>", "()V");
+ jvm_alloc_register_untyped(p -> rf, false);
+ jvm_generate(p, 0, 1, "aload_0");
+ jvm_generate(p, 1, 0, "invokespecial java/lang/Object/<init>()V");
+
+ /* Инициализация переменных объявленных в модуле */
+ oberon_object_t * x = ctx -> mod -> decl -> list -> next;
+ while(x != NULL)
+ {
+ if(x -> class == OBERON_CLASS_VAR)
+ {
+ if(x -> type -> class == OBERON_TYPE_ARRAY
+ || x -> type -> class == OBERON_TYPE_RECORD)
+ {
+ jvm_generate_new(p, x -> type, 0);
+ jvm_generate_store(p, x -> type, x -> gen_var);
+ }
+ }
+
+ x = x -> next;
+ }
+}
+
+void
+oberon_generate_end_module(oberon_context_t * ctx)
+{
+ struct gen_class * class = ctx -> mod -> gen_mod -> class;
+ gen_proc_t * p = class -> p;
+
+ jvm_generate(p, 0, 0, "return");
+ jvm_generate_function_end(class -> p);
+}
+
+static void
+jvm_init_local_object(gen_proc_t * p, oberon_object_t * x)
+{
+ gen_var_t * v;
+ bool wide;
+ char * desc;
+ struct gen_class * class;
+
+ v = x -> gen_var;
+ class = p -> class;
+ wide = jvm_is_wide_type(x -> type);
+ desc = jvm_get_descriptor(x -> type);
+
+ // Убеждаемся что сейчас находимся в функции
+ assert(class -> p);
+ assert(x -> local);
+
+ switch(x -> class)
+ {
+ case OBERON_CLASS_VAR:
+ case OBERON_CLASS_PARAM:
+ jvm_generate_and_init_named_local_var(v, p, wide, x -> name, desc);
+ break;
+ default:
+ gen_error("jvm_init_local_object: wat");
+ break;
+ }
+}
+
+/*
+ * Генерирует код для получения размера измерения массива
+ * Аналог Обероновского LEN(v, n); где n = 0 - первое измерение.
+ * ( aref -- int )
+ */
+
+static void
+jvm_generate_array_len(gen_proc_t * p, int dim)
+{
+ while(dim > 0)
+ {
+ jvm_generate(p, 0, 1, "iconst_0");
+ jvm_generate(p, 2, 1, "aaload");
+ dim -= 1;
+ }
+ jvm_generate(p, 1, 1, "arraylength");
+}
+
+static void
+jvm_generate_array_duplicate_and_replace(gen_proc_t * p, gen_var_t * v, oberon_type_t * arr)
+{
+ int dim = 0;
+ oberon_type_t * base = arr;
+ while(base -> class == OBERON_TYPE_ARRAY)
+ {
+ if(base -> size == 0)
+ {
+ jvm_generate_load(p, arr, v);
+ jvm_generate_array_len(p, dim);
+ dim += 1;
+ }
+ base = base -> base;
}
+
+ jvm_generate_new(p, arr, dim);
+ jvm_generate(p, 1, 2, "dup");
+ jvm_generate_load(p, arr, v);
+ jvm_generate_copy_array(p, arr);
+ jvm_generate_store(p, arr, v);
+}
+
+static void
+jvm_generate_record_duplicate_and_replace(gen_proc_t * p, gen_var_t * v, oberon_type_t * rec)
+{
+ jvm_generate_new(p, rec, 0);
+ jvm_generate(p, 1, 2, "dup");
+ jvm_generate_load(p, rec, v);
+ jvm_generate_copy_record(p, rec);
+ jvm_generate_store(p, rec, v);
}
void
-oberon_generator_init_module(oberon_context_t * ctx, oberon_module_t * mod)
+oberon_generate_begin_proc(oberon_context_t * ctx, oberon_object_t * proc)
{
- gen_module_t * m = GC_MALLOC(sizeof *m);
- memset(m, 0, sizeof *m);
- mod -> gen_mod = m;
+ gen_proc_t * p;
+ char * signature;
- int fnamesz = strlen(mod -> name) + 3;
- char fname[fnamesz + 1];
- snprintf(fname, fnamesz, "%s.j", mod -> name);
+ p = proc -> gen_proc;
- FILE * fp;
- fp = fopen(fname, "w");
- assert(fp != NULL);
+ signature = jvm_get_procedure_signature(proc -> type);
+ jvm_generate_function_header(p, "public static", proc -> name, signature);
- fprintf(fp, ".source %s\n", mod -> name);
- fprintf(fp, ".class %s\n", mod -> name);
- fprintf(fp, ".super java/lang/Object\n\n");
+ /* Выделение регистров под параметры и переменные */
+ oberon_object_t * var = proc -> type -> decl;
+ while(var)
+ {
+ jvm_init_local_object(p, var);
+ var = var -> next;
+ }
- m -> fp = fp;
+ /* Копирование статических/открытых массивов и записей */
+ var = proc -> type -> decl;
+ while(var)
+ {
+ if(var -> class == OBERON_CLASS_PARAM || var -> class == OBERON_CLASS_VAR_PARAM)
+ {
+ if(var -> type -> class == OBERON_TYPE_ARRAY)
+ {
+ jvm_generate_array_duplicate_and_replace(p, var -> gen_var, var -> type);
+ }
+ else if(var -> type -> class == OBERON_TYPE_RECORD)
+ {
+ jvm_generate_record_duplicate_and_replace(p, var -> gen_var, var -> type);
+ }
+ }
+ var = var -> next;
+ }
}
-// =======================================================================
-// GENERATOR
-// =======================================================================
-
-static void
-push_expr(oberon_context_t * ctx, FILE * fp, oberon_expr_t * expr);
-
void
-oberon_generate_begin_module(oberon_context_t * ctx)
+oberon_generate_end_proc(oberon_context_t * ctx)
{
- gen_module_t * m = ctx -> mod -> gen_mod;
- fprintf(m -> fp, ".method public <init>()V\n");
- fprintf(m -> fp, " aload_0\n");
- fprintf(m -> fp, " invokespecial java/lang/Object/<init>()V\n");
-}
+ gen_module_t * m;
+ gen_proc_t * p;
-void
-oberon_generate_end_module(oberon_context_t * ctx)
-{
- gen_module_t * m = ctx -> mod -> gen_mod;
+ m = ctx -> mod -> gen_mod;
+ p = m -> class -> p;
- fprintf(m -> fp, " .limit stack 32\n");
- fprintf(m -> fp, " .limit locals 32\n");
- fprintf(m -> fp, " return\n");
- fprintf(m -> fp, ".end method\n");
+ jvm_generate_function_end(p);
}
-void
-oberon_generate_begin_proc(oberon_context_t * ctx, oberon_object_t * proc)
+gen_label_t *
+oberon_generator_reserve_label(oberon_context_t * ctx)
{
gen_module_t * m;
- char * signature;
+ gen_proc_t * p;
+ gen_label_t * l;
m = ctx -> mod -> gen_mod;
- signature = get_procedure_signature(ctx, proc -> type);
+ p = m -> class -> p;
+
+ l = GC_MALLOC(sizeof *l);
+ memset(l, 0, sizeof *l);
- fprintf(m -> fp, ".method public static %s%s\n", proc -> name, signature);
+ l -> id = jvm_new_label_id(p);
+ return l;
}
void
-oberon_generate_call_proc(oberon_context_t * ctx, oberon_expr_t * desig)
+oberon_generate_label(oberon_context_t * ctx, gen_label_t * l)
{
- oberon_object_t * proc;
gen_module_t * m;
- char * fullname;
- char * signature;
-
- assert(desig -> is_item);
- assert(desig -> item.mode == MODE_CALL);
+ gen_proc_t * p;
m = ctx -> mod -> gen_mod;
- proc = desig -> item.var;
- fullname = get_field_full_name(ctx, proc);
- signature = get_procedure_signature(ctx, proc -> type);
-
- int num = desig -> item.num_args;
- oberon_expr_t * arg = desig -> item.args;
- for(int i = 0; i < num; i++)
- {
- push_expr(ctx, m -> fp, arg);
- arg = arg -> next;
- }
+ p = m -> class -> p;
- fprintf(m -> fp, "invokestatic %s%s\n", fullname, signature);
+ jvm_generate_label(p, l -> id);
}
void
-oberon_generate_end_proc(oberon_context_t * ctx)
+oberon_generate_goto(oberon_context_t * ctx, gen_label_t * l)
{
gen_module_t * m;
+ gen_proc_t * p;
+
m = ctx -> mod -> gen_mod;
+ p = m -> class -> p;
- fprintf(m -> fp, " .limit stack 32\n");
- fprintf(m -> fp, " .limit locals 32\n");
- fprintf(m -> fp, ".end method\n\n");
+ jvm_generate(p, 0, 0, "goto L%i", l -> id);
}
void
-oberon_generate_return(oberon_context_t * ctx, oberon_expr_t * expr)
+oberon_generate_branch(oberon_context_t * ctx, oberon_expr_t * cond, bool gotoif, gen_label_t * l)
{
gen_module_t * m;
- char prefix;
+ gen_proc_t * p;
m = ctx -> mod -> gen_mod;
+ p = m -> class -> p;
- if(expr)
+ push_expr(p, cond);
+
+ if(gotoif == false)
{
- push_expr(ctx, m -> fp, expr);
- prefix = get_prefix(ctx, expr -> result);
- fprintf(m -> fp, " %creturn\n", prefix);
+ /* переход если false */
+ jvm_generate(p, 1, 0, "ifeq L%i", l -> id);
}
else
{
- fprintf(m -> fp, " return\n");
+ /* переход если true */
+ jvm_generate(p, 1, 0, "ifne L%i", l -> id);
}
}
static void
-push_int(FILE * fp, long i)
+jvm_generate_call_proc(gen_proc_t * p, oberon_item_t * desig)
{
- if(i == -1)
- {
- fprintf(fp, "iconst_m1\n");
- }
- else if(i >= 0 && i <= 5)
+ assert(desig -> var == NULL);
+ assert(desig -> mode == MODE_CALL);
+
+ char * signature = NULL;
+
+ bool direct_call = false;
+ if(desig -> parent -> mode == MODE_VAR)
{
- fprintf(fp, "iconst_%li\n", i);
+ if(desig -> parent -> var -> class == OBERON_CLASS_PROC)
+ {
+ direct_call = true;
+ }
}
- else if(i >= -128 && i <= 127)
+
+ printf("direct_call == %i\n", direct_call);
+
+ oberon_type_t * procsig;
+ procsig = desig -> parent -> result;
+ signature = jvm_get_procedure_signature(procsig);
+
+ if(direct_call == false)
{
- fprintf(fp, "bipush %li\n", i);
+ /* Загружаем указатель на процедуру */
+ push_item(p, desig -> parent);
}
- else if(i >= -32768 && i <= 32767)
+
+ int args_cells = 0;
+ int result_cells = jvm_cell_size_for_type(procsig -> base);
+
+ int num = desig -> num_args;
+ oberon_expr_t * arg = desig -> args;
+ for(int i = 0; i < num; i++)
{
- fprintf(fp, "sipush %li\n", i);
+ args_cells += jvm_cell_size_for_type(arg -> result);
+ push_expr(p, arg);
+ arg = arg -> next;
}
- else if(i >= -2147483648 && i <= 2147483647)
+
+ if(direct_call)
{
- fprintf(fp, "ldc %li\n", i);
+ char * full_name = jvm_get_field_full_name(desig -> parent -> var);
+ jvm_generate(p, args_cells, result_cells, "invokestatic %s%s", full_name, signature);
}
else
{
- fprintf(fp, "ldc2 %li\n", i);
+ char * cname = jvm_get_class_full_name(procsig);
+ jvm_generate(p, 1 + args_cells, result_cells, "invokevirtual %s/invoke%s", cname, signature);
}
}
-static void
-push_float(FILE * fp, double f, int size)
+void
+oberon_generate_call_proc(oberon_context_t * ctx, oberon_expr_t * desig)
{
- if(size <= 4)
+ assert(desig -> is_item);
+ jvm_generate_call_proc(ctx -> mod -> gen_mod -> class -> p, (oberon_item_t *) desig);
+}
+
+void
+oberon_generate_return(oberon_context_t * ctx, oberon_expr_t * expr)
+{
+ gen_module_t * m;
+ gen_proc_t * p;
+ char prefix;
+ int cell_size;
+
+ m = ctx -> mod -> gen_mod;
+ p = m -> class -> p;
+
+ if(expr)
{
- if(f == 0.0)
- {
- fprintf(fp, "fconst_0\n");
- }
- if(f == 1.0)
- {
- fprintf(fp, "fconst_1\n");
- }
- if(f == 2.0)
- {
- fprintf(fp, "fconst_2\n");
- }
- else
- {
- fprintf(fp, "ldc %lf\n", f);
- }
+ push_expr(p, expr);
+ prefix = jvm_get_prefix(expr -> result);
+ cell_size = jvm_cell_size_for_type(expr -> result);
+ jvm_generate(p, cell_size, 0, "%creturn", prefix);
}
else
{
- if(f == 0.0)
- {
- fprintf(fp, "dconst_0\n");
- }
- if(f == 1.0)
- {
- fprintf(fp, "dconst_1\n");
- }
- else
- {
- fprintf(fp, "ldc2 %lf\n", f);
- }
+ jvm_generate(p, 0, 0, "return");
+ }
+}
+
+static void
+jvm_generate_expr_new_pointer(gen_proc_t * p, oberon_type_t * type, int num, oberon_expr_t * arg)
+{
+ assert(type -> class == OBERON_TYPE_POINTER);
+
+ for(int i = 0; i < num; i++)
+ {
+ push_expr(p, arg);
+ arg = arg -> next;
}
+
+ jvm_generate_new(p, type -> base, num);
}
static void
-push_var(oberon_context_t * ctx, FILE * fp, oberon_object_t * var)
+jvm_generate_cast_type(gen_proc_t * p, oberon_type_t * from, oberon_type_t * to)
{
- if(var -> local)
+ if(to -> class == OBERON_TYPE_RECORD || to -> class == OBERON_TYPE_POINTER)
{
- int reg = var -> gen_var -> reg;
- char prefix = get_prefix(ctx, var -> type);
- fprintf(fp, "%cload %i\n", prefix, reg);
+ char * full_name = jvm_get_class_full_name(to);
+ jvm_generate(p, 1, 1, "checkcast %s", full_name);
}
else
{
- char * fullname = get_field_full_name(ctx, var);
- char * desc = get_descriptor(ctx, var -> type);
- fprintf(fp, "getstatic %s %s\n", fullname, desc);
+ char prefix = jvm_get_prefix(from);
+ char postfix = jvm_get_postfix(to);
+ int from_cell_size = jvm_cell_size_for_type(from);
+ int to_cell_size = jvm_cell_size_for_type(to);
+
+ jvm_generate_comment(p, "cast type class from %i(%i) to %i(%i)", from -> class, from -> size, to -> class, to -> size);
+
+ if(prefix == postfix)
+ {
+ return;
+ }
+
+ jvm_generate(p, from_cell_size, to_cell_size, "%c2%c", prefix, postfix);
}
}
static void
-push_item(oberon_context_t * ctx, FILE * fp, oberon_item_t * item)
+push_item(gen_proc_t * p, oberon_item_t * item)
{
switch(item -> mode)
{
case MODE_VAR:
- push_var(ctx, fp, item -> var);
+ if(item -> var -> class == OBERON_CLASS_PROC)
+ {
+ jvm_generate_push_procedure_pointer(p, item -> var);
+ }
+ else
+ {
+ jvm_generate_load(p, item -> result, item -> var -> gen_var);
+ }
break;
case MODE_INTEGER:
- push_int(fp, item -> integer);
+ case MODE_CHAR:
+ case MODE_SET:
+ jvm_generate_push_int_size(p, item -> integer, item -> result -> size);
break;
case MODE_BOOLEAN:
- push_int(fp, item -> boolean);
+ jvm_generate_push_int_size(p, item -> boolean, item -> result -> size);
break;
case MODE_CALL:
- oberon_generate_call_proc(ctx, (oberon_expr_t *) item);
+ jvm_generate_call_proc(p, item);
break;
case MODE_INDEX:
- oberon_error(ctx, "push_item: TODO index");
+ ;
+ char postfix = jvm_get_postfix(item -> result);
+ int cell_size = jvm_cell_size_for_postfix(postfix);
+ assert(item -> parent -> is_item);
+ push_item(p, (oberon_item_t *) item -> parent);
+ push_expr(p, item -> args);
+ jvm_generate(p, 1 + 1, cell_size, "%caload", postfix);
break;
case MODE_FIELD:
- oberon_error(ctx, "push_item: TODO field");
+ assert(item -> parent -> is_item);
+ push_item(p, (oberon_item_t *) item -> parent);
+ jvm_generate_load(p, item -> result, item -> var -> gen_var);
break;
case MODE_DEREF:
- oberon_error(ctx, "push_item: TODO deref");
+ /* Все объекты в jvm представляются как указатели */
+ assert(item -> parent -> is_item);
+ push_item(p, (oberon_item_t *) item -> parent);
break;
case MODE_NIL:
- fprintf(fp, "aconst_null\n");
+ jvm_generate(p, 0, 1, "aconst_null");
break;
case MODE_NEW:
- oberon_error(ctx, "push_item: TODO new");
+ jvm_generate_expr_new_pointer(p, item -> result, item -> num_args, item -> args);
break;
case MODE_REAL:
- push_float(fp, item -> real, item -> result -> size);
+ jvm_generate_push_float(p, item -> real, item -> result -> size);
+ break;
+ case MODE_STRING:
+ jvm_generate_push_string(p, item -> string, item -> result -> size);
+ break;
+ default:
+ gen_error("push_item: unk mode %i", item -> mode);
+ break;
+ }
+}
+
+static void
+jvm_generate_logical_not(gen_proc_t * p)
+{
+ int label_done = jvm_new_label_id(p);
+ int label_false = jvm_new_label_id(p);
+ char * label_name_done = jvm_get_label_name(label_done);
+ char * label_name_false = jvm_get_label_name(label_false);
+
+ jvm_generate(p, 1, 0, "ifne %s", label_name_false);
+ jvm_generate(p, 0, 1, "iconst_1");
+ jvm_generate(p, 0, 0, "goto %s", label_name_done);
+ jvm_generate_label(p, label_false);
+ jvm_generate(p, 0, 1, "iconst_0");
+ jvm_generate_label(p, label_done);
+}
+
+static void
+jvm_generate_abs(gen_proc_t * p, char prefix)
+{
+ char t = jvm_get_type_of_prefix(prefix);
+ int cell_size = jvm_cell_size_for_postfix(prefix);
+ jvm_generate(p, cell_size, cell_size, "invokestatic java/lang/Math/abs(%c)%c", t, t);
+}
+
+static char *
+jvm_get_compare_postfix(int op)
+{
+ char * cmpop = "";
+ switch(op)
+ {
+ case OP_EQ:
+ cmpop = "eq";
+ break;
+ case OP_NEQ:
+ cmpop = "ne";
+ break;
+ case OP_LSS:
+ cmpop = "lt";
+ break;
+ case OP_LEQ:
+ cmpop = "le";
+ break;
+ case OP_GRT:
+ cmpop = "gt";
+ break;
+ case OP_GEQ:
+ cmpop = "ge";
break;
default:
- oberon_error(ctx, "push_item: unk mode %i", item -> mode);
+ gen_error("jvm_generate_compare_op: wat");
break;
}
+ return cmpop;
+}
+
+static void
+jvm_generate_compare_op(gen_proc_t * p, oberon_type_t * t, int op)
+{
+ char prefix = jvm_get_prefix(t);
+ int label_true = jvm_new_label_id(p);
+ int label_done = jvm_new_label_id(p);
+ int cell_size = jvm_cell_size_for_type(t);
+ char * cmpop = jvm_get_compare_postfix(op);
+
+ if(prefix == 'l')
+ {
+ jvm_generate(p, 2 * cell_size, 1, "lcmp");
+ jvm_generate(p, 1, 1, "if%s L%i", cmpop, label_true);
+ }
+ else if(prefix == 'f' || prefix == 'd')
+ {
+ char fop;
+ if(op == OP_EQ || op == OP_NEQ || op == OP_GRT || op == OP_GEQ)
+ {
+ fop = 'l';
+ }
+ else
+ {
+ fop = 'g';
+ }
+ jvm_generate(p, 2 * cell_size, 1, "%ccmp%c", prefix, fop);
+ jvm_generate(p, 1, 1, "if%s L%i", cmpop, label_true);
+ }
+ else
+ {
+ jvm_generate(p, 2 * cell_size, 0, "if_%ccmp%s L%i", prefix, cmpop, label_true);
+ }
+
+ jvm_generate(p, 0, 1, "iconst_0");
+ jvm_generate(p, 0, 0, "goto L%i", label_done);
+ jvm_generate_label(p, label_true);
+ jvm_generate(p, 0, 1, "iconst_1");
+ jvm_generate_label(p, label_done);
}
static void
-push_operator(oberon_context_t * ctx, FILE * fp, oberon_oper_t * oper)
+jvm_generate_operator(gen_proc_t * p, oberon_type_t * t, int op)
{
- char prefix = get_prefix(ctx, oper -> result);
- switch(oper -> op)
+ char prefix = jvm_get_prefix(t);
+ int cell_size = jvm_cell_size_for_type(t);
+ switch(op)
{
case OP_UNARY_MINUS:
- push_expr(ctx, fp, oper -> left);
- fprintf(fp, "%cneg\n", prefix);
+ jvm_generate(p, cell_size, cell_size, "%cneg", prefix);
break;
- case OP_BITWISE_NOT:
- push_expr(ctx, fp, oper -> left);
- push_int(fp, -1);
- fprintf(fp, "%cxor\n", prefix);
+ case OP_COMPLEMENTATION:
+ jvm_generate_push_int_size(p, -1, t -> size);
+ jvm_generate(p, 2 * cell_size, cell_size, "%cxor", prefix);
+ break;
+ case OP_LOGIC_NOT:
+ jvm_generate_logical_not(p);
+ break;
+ case OP_ABS:
+ jvm_generate_abs(p, prefix);
break;
case OP_ADD:
- push_expr(ctx, fp, oper -> left);
- push_expr(ctx, fp, oper -> right);
- fprintf(fp, "%cadd\n", prefix);
+ jvm_generate(p, 2 * cell_size, cell_size, "%cadd", prefix);
break;
case OP_SUB:
- push_expr(ctx, fp, oper -> left);
- push_expr(ctx, fp, oper -> right);
- fprintf(fp, "%csub\n", prefix);
+ jvm_generate(p, 2 * cell_size, cell_size, "%csub", prefix);
break;
case OP_MUL:
- push_expr(ctx, fp, oper -> left);
- push_expr(ctx, fp, oper -> right);
- fprintf(fp, "%cmul\n", prefix);
+ jvm_generate(p, 2 * cell_size, cell_size, "%cmul", prefix);
break;
case OP_DIV:
- push_expr(ctx, fp, oper -> left);
- push_expr(ctx, fp, oper -> right);
- fprintf(fp, "%cdiv\n", prefix);
+ jvm_generate(p, 2 * cell_size, cell_size, "%cdiv", prefix);
break;
case OP_MOD:
- push_expr(ctx, fp, oper -> left);
- push_expr(ctx, fp, oper -> right);
- fprintf(fp, "%crem\n", prefix);
+ jvm_generate(p, 2 * cell_size, cell_size, "%crem", prefix);
break;
- case OP_BITWISE_AND:
- push_expr(ctx, fp, oper -> left);
- push_expr(ctx, fp, oper -> right);
- fprintf(fp, "%cand\n", prefix);
+ case OP_UNION:
+ jvm_generate(p, 2 * cell_size, cell_size, "%cor", prefix);
break;
- case OP_BITWISE_XOR:
- push_expr(ctx, fp, oper -> left);
- push_expr(ctx, fp, oper -> right);
- fprintf(fp, "%cxor\n", prefix);
+ case OP_INTERSECTION:
+ jvm_generate(p, 2 * cell_size, cell_size, "%cand", prefix);
break;
- case OP_BITWISE_OR:
- push_expr(ctx, fp, oper -> left);
- push_expr(ctx, fp, oper -> right);
- fprintf(fp, "%cor\n", prefix);
+ case OP_DIFFERENCE:
+ jvm_generate_push_int_size(p, -1, t -> size);
+ jvm_generate(p, 2 * cell_size, cell_size, "%cxor", prefix);
+ jvm_generate(p, 2 * cell_size, cell_size, "%cand", prefix);
+ break;
+ case OP_SYM_DIFFERENCE:
+ jvm_generate(p, 2 * cell_size, cell_size, "%cxor", prefix);
break;
case OP_EQ:
case OP_LEQ:
case OP_GRT:
case OP_GEQ:
+ jvm_generate_compare_op(p, t, op);
+ break;
+ default:
+ gen_error("jvm_generate_operator: unk op %i", op);
+ break;
+ }
+}
+
+static void
+jvm_generate_logical_or(gen_proc_t * p, oberon_expr_t * a, oberon_expr_t * b)
+{
+ int label_calc_b = jvm_new_label_id(p);
+ int label_done = jvm_new_label_id(p);
+ char * label_name_calc_b = jvm_get_label_name(label_calc_b);
+ char * label_name_done = jvm_get_label_name(label_done);
+
+ /* a OR b -- если a, то TRUE, иначе b */
+
+ push_expr(p, a);
+ jvm_generate(p, 1, 0, "ifeq %s", label_name_calc_b);
+ jvm_generate(p, 0, 1, "iconst_1");
+ jvm_generate(p, 0, 0, "goto %s", label_name_done);
+ jvm_generate_label(p, label_calc_b);
+ push_expr(p, b);
+ jvm_generate_label(p, label_done);
+}
+
+static void
+jvm_generate_logical_and(gen_proc_t * p, oberon_expr_t * a, oberon_expr_t * b)
+{
+ int label_false = jvm_new_label_id(p);
+ int label_done = jvm_new_label_id(p);
+ char * label_name_false = jvm_get_label_name(label_false);
+ char * label_name_done = jvm_get_label_name(label_done);
+
+ /* a AND b -- если a, то b, иначе FALSE */
+
+ push_expr(p, a);
+ jvm_generate(p, 1, 0, "ifeq %s", label_name_false);
+ push_expr(p, b);
+ jvm_generate(p, 0, 0, "goto %s", label_name_done);
+ jvm_generate_label(p, label_false);
+ jvm_generate(p, 0, 1, "iconst_0");
+ jvm_generate_label(p, label_done);
+}
+
+static void
+jvm_generate_range(gen_proc_t * p, oberon_expr_t * a, oberon_expr_t * b)
+{
+ /* { a } == 1 << a */
+ /* { a..b } == (a <= b) ? ((2 << b) - (1 << a)) : (0); */
+
+ char prefix;
+ int cell_size;
+ oberon_type_t * t;
+ gen_var_t * ra;
+ gen_var_t * rb;
+ int label_else;
+ int label_end;
+ bool wide;
+
+ t = a -> result;
+ cell_size = jvm_cell_size_for_type(t);
+ prefix = jvm_get_prefix(t);
+
+ if(b == NULL)
+ {
+ jvm_generate_push_int_size(p, 1, t -> size);
+ push_expr(p, a);
+ jvm_generate(p, 2 * cell_size, cell_size, "%cshl", prefix);
+ }
+ else
+ {
+ wide = jvm_is_wide_type(t);
+ ra = oberon_generator_new_var();
+ rb = oberon_generator_new_var();
+ jvm_generate_and_init_local_var(ra, p, wide);
+ jvm_generate_and_init_local_var(rb, p, wide);
+ label_else = jvm_new_label_id(p);
+ label_end = jvm_new_label_id(p);
+
+ push_expr(p, a);
+ jvm_generate_store(p, t, ra);
+ push_expr(p, b);
+ jvm_generate_store(p, t, rb);
+
+ jvm_generate_load(p, t, ra);
+ jvm_generate_load(p, t, rb);
+ jvm_generate(p, 2 * cell_size, 0, "if_%ccmpgt L%i", prefix, label_else);
+
+ jvm_generate_push_int_size(p, 2, t -> size);
+ jvm_generate_load(p, t, rb);
+ jvm_generate(p, 2 * cell_size, cell_size, "%cshl", prefix);
+ jvm_generate_push_int_size(p, 2, t -> size);
+ jvm_generate_load(p, t, ra);
+ jvm_generate(p, 2 * cell_size, cell_size, "%cshl", prefix);
+ jvm_generate(p, 2 * cell_size, cell_size, "%csub", prefix);
+ jvm_generate(p, 0, 0, "goto L%i", label_end);
+
+ jvm_generate_label(p, label_else);
+ jvm_generate_push_int_size(p, 0, t -> size);
+ jvm_generate_label(p, label_end);
+ }
+
+ /* TODO free registers */
+}
+
+static void
+jvm_generate_in(gen_proc_t * p, 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);
+
+ jvm_generate_push_int_size(p, 1, t -> size);
+ push_expr(p, a);
+ jvm_generate(p, 2 * cell_size, cell_size, "%cshl", prefix);
+ push_expr(p, b);
+ jvm_generate(p, 2 * cell_size, cell_size, "%cand", prefix);
+
+ if(cell_size > 1)
+ {
+ jvm_generate(p, cell_size, 0, "lcmp");
+ }
+
+ jvm_generate(p, 1, 0, "ifeq L%i", label_else);
+ jvm_generate(p, 0, 1, "iconst_1");
+ jvm_generate(p, 0, 0, "goto L%i", label_end);
+ jvm_generate_label(p, label_else);
+ jvm_generate(p, 0, 1, "iconst_0");
+ jvm_generate_label(p, label_end);
+}
+
+static void
+push_operator(gen_proc_t * p, oberon_oper_t * oper)
+{
+ oberon_type_t * preq = oper -> left -> result;
+ int op = oper -> op;
+ switch(op)
+ {
+ case OP_CAST:
+ push_expr(p, oper -> left);
+ jvm_generate_cast_type(p, oper -> left -> result, oper -> result);
+ break;
+ case OP_COMPLEMENTATION:
+ case OP_UNARY_MINUS:
case OP_LOGIC_NOT:
case OP_ABS:
- oberon_error(ctx, "push_oper: TODO op %i", oper -> op);
+ push_expr(p, oper -> left);
+ jvm_generate_operator(p, preq, op);
+ break;
+
+ case OP_ADD:
+ case OP_SUB:
+ case OP_MUL:
+ case OP_DIV:
+ case OP_MOD:
+
+ case OP_UNION:
+ case OP_INTERSECTION:
+ case OP_DIFFERENCE:
+ case OP_SYM_DIFFERENCE:
+
+ case OP_EQ:
+ case OP_NEQ:
+ case OP_LSS:
+ case OP_LEQ:
+ case OP_GRT:
+ case OP_GEQ:
+ push_expr(p, oper -> left);
+ push_expr(p, oper -> right);
+ jvm_generate_operator(p, preq, op);
+ break;
+
+ case OP_LOGIC_OR:
+ jvm_generate_logical_or(p, oper -> left, oper -> right);
+ break;
+ case OP_LOGIC_AND:
+ jvm_generate_logical_and(p, oper -> left, oper -> right);
+ break;
+
+ case OP_IS:
+ preq = oper -> right -> result;
+ char * cname = jvm_get_class_full_name(preq);
+ push_expr(p, oper -> left);
+ jvm_generate(p, 1, 1, "instanceof %s", cname);
+ break;
+ case OP_RANGE:
+ jvm_generate_range(p, oper -> left, oper -> right);
+ break;
+ case OP_IN:
+ jvm_generate_in(p, oper -> left, oper -> right);
break;
default:
- oberon_error(ctx, "push_oper: unk op %i", oper -> op);
+ gen_error("push_oper: unk op %i", op);
break;
}
}
static void
-push_expr(oberon_context_t * ctx, FILE * fp, oberon_expr_t * expr)
+push_expr(gen_proc_t * p, oberon_expr_t * expr)
{
if(expr -> is_item)
{
- push_item(ctx, fp, (oberon_item_t *) expr);
+ push_item(p, (oberon_item_t *) expr);
}
else
{
- push_operator(ctx, fp, (oberon_oper_t *) expr);
+ push_operator(p, (oberon_oper_t *) expr);
}
}
static void
-store_expr(oberon_context_t * ctx, FILE * fp, oberon_expr_t * expr)
+store_expr(gen_proc_t * p, oberon_expr_t * dst, oberon_expr_t * src)
{
- assert(expr -> is_item);
- oberon_item_t * item = (oberon_item_t *) expr;
+ assert(dst -> is_item);
+ oberon_item_t * item = (oberon_item_t *) dst;
- char prefix;
- switch(item -> mode)
+ if(dst -> result -> class == OBERON_TYPE_ARRAY
+ || src -> result -> class == OBERON_TYPE_ARRAY)
+ {
+ push_expr(p, dst);
+ push_expr(p, src);
+ jvm_generate_copy_array(p, dst -> result);
+ }
+ else if(dst -> result -> class == OBERON_TYPE_RECORD
+ || src -> result -> class == OBERON_TYPE_RECORD)
+ {
+ push_expr(p, dst);
+ push_expr(p, src);
+ jvm_generate_copy_record(p, dst -> result);
+ }
+ else switch(item -> mode)
{
case MODE_VAR:
- if(item -> var -> local)
- {
- int reg = item -> var -> gen_var -> reg;
- prefix = get_prefix(ctx, item -> result);
- fprintf(fp, "%cstore %i\n", prefix, reg);
- }
- else
- {
- char * fullname = get_field_full_name(ctx, item -> var);
- char * desc = get_descriptor(ctx, item -> result);
- fprintf(fp, "putstatic %s %s\n", fullname, desc);
- }
+ push_expr(p, src);
+ jvm_generate_store(p, src -> result, item -> var -> gen_var);
+ break;
+ case MODE_INDEX:
+ ;
+ char postfix = jvm_get_postfix(src -> result);
+ int cell_size = jvm_cell_size_for_postfix(postfix);
+ assert(item -> parent -> is_item);
+ push_item(p, (oberon_item_t *) item -> parent);
+ push_expr(p, item -> args);
+ push_expr(p, src);
+ jvm_generate(p, 1 + 1 + cell_size, 0, "%castore", postfix);
+ break;
+ case MODE_FIELD:
+ assert(item -> parent -> is_item);
+ push_item(p, (oberon_item_t *) item -> parent);
+ push_expr(p, src);
+ jvm_generate_store(p, src -> result, item -> var -> gen_var);
break;
default:
- oberon_error(ctx, "store_expr: unk mode %i", item -> mode);
+ gen_error("store_expr: unk mode %i", item -> mode);
break;
}
}
oberon_generate_assign(oberon_context_t * ctx, oberon_expr_t * src, oberon_expr_t * dst)
{
gen_module_t * m;
+ gen_proc_t * p;
+
m = ctx -> mod -> gen_mod;
+ p = m -> class -> p;
- push_expr(ctx, m -> fp, src);
- store_expr(ctx, m -> fp, dst);
+ store_expr(p, dst, src);
}
void