index 2a2abcdcd3632f1b73a22aecc2135138f8e94523..f26c9513e000ca18cc3203fc0e67155b3111398c 100644 (file)
#include <stdio.h>
+#include <stdlib.h>
#include <stdarg.h>
+#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <assert.h>
#include <gc.h>
-#include "../../../include/oberon.h"
#include "../../oberon-internals.h"
+#include "../../oberon-type-compat.h"
+#include "../../generator.h"
#include "generator-jvm.h"
+#include "generator-jvm-abi.h"
+#include "generator-jvm-asm.h"
+#include "generator-jvm-basic.h"
-char *
-new_string(const char * format, ...)
-{
- va_list ptr;
- va_start(ptr, format);
+static void
+push_item(gen_proc_t * p, oberon_item_t * item);
- char buf[1024];
- vsnprintf(buf, 1024, format, ptr);
+static void
+jvm_generate_new(gen_proc_t * p, oberon_type_t * type, int num);
- va_end(ptr);
+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';
+ }
- char * result;
- int size;
+ if(prefix == postfix)
+ {
+ return;
+ }
- size = strlen(buf);
- result = GC_MALLOC(size + 1);
- memset(result, 0, size);
- strncpy(result, buf, size);
+ if((prefix == 'l' || prefix == 'd') && (postfix == 'b' || postfix == 's'))
+ {
+ jvm_generate(p, 2, 1, "%c2i", prefix);
+ prefix = 'i';
+ }
- return result;
+ 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);
}
-void
-oberon_generator_init_context(oberon_context_t * ctx)
+static void
+jvm_generate_cast_type(gen_proc_t * p, oberon_type_t * from, oberon_type_t * to)
{
- gen_context_t * gen_context = GC_MALLOC(sizeof *gen_context);
- memset(gen_context, 0, sizeof *gen_context);
+ 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);
+ }
+}
- ctx -> gen_context = gen_context;
+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/doubleToRawLongBits(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);
+ }
}
-void
-oberon_generator_destroy_context(oberon_context_t * ctx)
+static void
+check_index(gen_proc_t * p, oberon_type_t * index_type)
{
- ctx -> gen_context = NULL;
+ // TODO проверка валидности границ
+ char prefix = jvm_get_prefix(index_type);
+ jvm_generate_cast_prefix(p, prefix, 'i');
}
-static char * get_class_full_name(oberon_context_t * ctx, oberon_type_t * type);
+/*
+ * Генерирует код для инициализации массива со статическим базовым типом
+ * ( aref -- )
+ */
-static char *
-get_descriptor(oberon_context_t * ctx, oberon_type_t * type)
+static void
+jvm_generate_array_initialization(gen_proc_t * p, oberon_type_t * arr)
+{
+ 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 {
+ int reg_index;
+ int reg_length;
+ int start;
+ int end;
+ } loop[dim];
+
+ int reg_dst;
+ reg_dst = jvm_alloc_register_untyped(p -> rf, false);
+ jvm_generate(p, 1, 0, "astore %i", reg_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].reg_index = jvm_alloc_register_untyped(p -> rf, false);
+ loop[i].reg_length = jvm_alloc_register_untyped(p -> rf, false);
+ loop[i].start = jvm_new_label_id(p);
+ loop[i].end = jvm_new_label_id(p);
+
+ jvm_generate(p, 0, 1, "iconst_0");
+ jvm_generate(p, 1, 0, "istore %i", loop[i].reg_index);
+
+ jvm_generate(p, 0, 1, "aload %i", reg_dst);
+ jvm_generate(p, 1, 1, "arraylength");
+ jvm_generate(p, 1, 0, "istore %i", loop[i].reg_length);
+
+ /* if(i >= len) goto end; */
+ jvm_generate_label(p, loop[i].start);
+ jvm_generate(p, 0, 1, "iload %i", loop[i].reg_index);
+ jvm_generate(p, 0, 1, "iload %i", loop[i].reg_length);
+ jvm_generate(p, 2, 0, "if_icmpge L%i", loop[i].end);
+ }
+
+ jvm_generate(p, 0, 1, "aload %i", reg_dst);
+ jvm_generate(p, 0, 1, "iload %i", loop[0].reg_index);
+ for(int i = 1; i < dim; i++)
+ {
+ jvm_generate(p, 2, 1, "aaload");
+ jvm_generate(p, 0, 1, "iload %i", loop[i].reg_index);
+ }
+ 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].reg_index);
+ jvm_generate(p, 0, 0, "goto L%i", loop[i].start);
+ jvm_generate_label(p, loop[i].end);
+ }
+}
+
+static void
+jvm_generate_new(gen_proc_t * p, oberon_type_t * type, int num)
{
+ int dim;
+ char * cname;
char * desc;
+ oberon_type_t * base;
switch(type -> class)
{
- 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");
- break;
case OBERON_TYPE_PROCEDURE:
+ case OBERON_TYPE_REAL:
+ case OBERON_TYPE_POINTER:
+ gen_error("jvm_generate_new_static: static alocation not allowed");
+ break;
case OBERON_TYPE_RECORD:
- desc = get_class_full_name(ctx, type);
- return new_string("L%s;", desc);
+ 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:
- desc = get_descriptor(ctx, type -> base);
- return new_string("[%s", desc);
+ dim = 0;
+ base = type;
+ desc = jvm_get_descriptor(type);
+ while(base -> class == OBERON_TYPE_ARRAY)
+ {
+ 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;
+ }
+
+ 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, "print_descriptor: unsupported type class %i", type -> class);
+ gen_error("jvm_generate_new_static: unk type class %i", type -> class);
break;
}
+}
+
+/*
+ * Генерирует код для копирования полей из первой записи во вторую.
+ * ( aref_dst aref_src -- )
+ * dst := src;
+ */
- return NULL;
+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_prefix(oberon_context_t * ctx, oberon_type_t * type)
+/*
+ * 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)
{
- int size = type -> size;
- switch(type -> class)
+ int dim = 0;
+ oberon_type_t * base = arr;
+ while(base -> class == OBERON_TYPE_ARRAY)
{
- case OBERON_TYPE_BOOLEAN:
- case OBERON_TYPE_INTEGER:
- return (size <= 4) ? ('i') : ('l');
- break;
- case OBERON_TYPE_PROCEDURE:
- case OBERON_TYPE_ARRAY:
- case OBERON_TYPE_RECORD:
- case OBERON_TYPE_POINTER:
- return 'a';
- break;
- case OBERON_TYPE_REAL:
- return (size <= 4) ? ('f') : ('d');
- break;
+ dim += 1;
+ base = base -> base;
}
- oberon_error(ctx, "get_prefix: wat");
- return '!';
-}
+ struct {
+ int reg_index;
+ int reg_length;
+ int start;
+ int end;
+ } loop[dim];
+
+ int reg_dst = jvm_alloc_register_untyped(p -> rf, false);
+ int reg_src = jvm_alloc_register_untyped(p -> rf, false);
+ jvm_generate(p, 1, 0, "astore %i", reg_src);
+ jvm_generate(p, 1, 0, "astore %i", reg_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].reg_index = jvm_alloc_register_untyped(p -> rf, false);
+ loop[i].reg_length = jvm_alloc_register_untyped(p -> rf, false);
+ loop[i].start = jvm_new_label_id(p);
+ loop[i].end = jvm_new_label_id(p);
+
+ jvm_generate(p, 0, 1, "iconst_0");
+ jvm_generate(p, 1, 0, "istore %i", loop[i].reg_index);
+
+ jvm_generate(p, 0, 1, "aload %i", reg_src);
+ jvm_generate(p, 1, 1, "arraylength");
+ jvm_generate(p, 1, 0, "istore %i", loop[i].reg_length);
+
+ /* if(i >= len) goto end; */
+ jvm_generate_label(p, loop[i].start);
+ jvm_generate(p, 0, 1, "iload %i", loop[i].reg_index);
+ jvm_generate(p, 0, 1, "iload %i", loop[i].reg_length);
+ jvm_generate(p, 2, 0, "if_icmpge L%i", loop[i].end);
+ }
-static char *
-get_field_full_name(oberon_context_t * ctx, oberon_object_t * x)
-{
- return new_string("%s/%s", x -> module -> name, x -> name);
-}
+ if(base -> class == OBERON_TYPE_RECORD)
+ {
+ /* Получаем записи по индексам ( -- dst src ) */
-static char *
-get_class_full_name(oberon_context_t * ctx, oberon_type_t * type)
-{
- int rec_id;
- char * name = NULL;
+ jvm_generate(p, 0, 1, "aload %i", reg_dst);
+ for(int i = 0; i < dim; i++)
+ {
+ jvm_generate(p, 0, 1, "iload %i", loop[i].reg_index);
+ jvm_generate(p, 2, 1, "aaload");
+ }
- switch(type -> class)
+ jvm_generate(p, 0, 1, "aload %i", reg_src);
+ for(int i = 0; i < dim; i++)
+ {
+ jvm_generate(p, 0, 1, "iload %i", loop[i].reg_index);
+ jvm_generate(p, 2, 1, "aaload");
+ }
+
+ /* Копируем записи ( dst src -- ) */
+ jvm_generate_copy_record(p, base);
+ }
+ else
{
- case OBERON_TYPE_PROCEDURE:
- name = new_string("SYSTEM$PROCEDURE");
+ char postfix = jvm_get_postfix(base);
+ int cell_size = jvm_cell_size_for_postfix(postfix);
- char * desc;
- desc = get_descriptor(ctx, type -> base);
- name = new_string("%s$%s", name, desc);
+ /* Получаем массивы и индексы ( -- dst i src i ) */
- int num = type -> num_decl;
- oberon_object_t * arg = type -> decl;
- for(int i = 0; i < num; i++)
- {
- desc = get_descriptor(ctx, arg -> type);
- name = new_string("%s%s", name, desc);
- arg = arg -> next;
- }
+ jvm_generate(p, 0, 1, "aload %i", reg_dst);
+ jvm_generate(p, 0, 1, "iload %i", loop[0].reg_index);
+ for(int i = 1; i < dim; i++)
+ {
+ jvm_generate(p, 2, 1, "aaload");
+ jvm_generate(p, 0, 1, "iload %i", loop[i].reg_index);
+ }
- 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);
- break;
- default:
- oberon_error(ctx, "get_record_full_name: unk type class %i", type -> class);
- break;
+ jvm_generate(p, 0, 1, "aload %i", reg_src);
+ jvm_generate(p, 0, 1, "iload %i", loop[0].reg_index);
+ for(int i = 1; i < dim; i++)
+ {
+ jvm_generate(p, 2, 1, "aaload");
+ jvm_generate(p, 0, 1, "iload %i", loop[i].reg_index);
+ }
+
+ /* Копируем значения ( dst i src i -- ) */
+ jvm_generate(p, 2, cell_size, "%caload", postfix);
+ jvm_generate(p, 2 + cell_size, 0, "%castore", postfix);
}
- return name;
+ for(int i = dim - 1; i >= 0; i--)
+ {
+ jvm_generate(p, 0, 0, "iinc %i 1", loop[i].reg_index);
+ jvm_generate(p, 0, 0, "goto L%i", loop[i].start);
+ jvm_generate_label(p, loop[i].end);
+ }
}
-static char *
-get_procedure_signature(oberon_context_t * ctx, oberon_type_t * proc)
+static void
+jvm_generate_push_procedure_pointer(gen_proc_t * p, oberon_object_t * proc)
{
- char * signature;
- char * desc;
-
- signature = new_string("(");
+ 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);
+}
- int num = proc -> num_decl;
- oberon_object_t * arg = proc -> decl;
- for(int i = 0; i < num; i++)
- {
- desc = get_descriptor(ctx, arg -> type);
- signature = new_string("%s%s", signature, desc);
- arg = arg -> next;
- }
+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);
- desc = get_descriptor(ctx, proc -> base);
- signature = new_string("%s)%s", signature, desc);
+ ctx -> gen_context = gen_context;
+ gen_context -> dir = ".";
+}
- return signature;
+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(const char * dir, 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(dir, 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");
+ 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(const char * dir, 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(dir, 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 private <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 = jvm_create_proc(class);
+ jvm_generate_function_header(p, "public", "invoke", signature);
+ jvm_alloc_register_untyped(p -> rf, false);
+
+ int use_size = 0;
+ int num = proc -> type -> num_decl;
+ oberon_object_t * param = proc -> type -> decl;
+ for(int i = 0; i < num; i++)
+ {
+ gen_type_t * t = param -> type -> gen_type;
+ if(param -> class == OBERON_CLASS_VAR_PARAM)
+ {
+ int reg = jvm_alloc_register_untyped(p -> rf, true);
+ jvm_generate(p, 0, 1, "aload %i", reg);
+ jvm_generate(p, 0, 1, "iload %i", reg + 1);
+ }
+ else
+ {
+ int reg = jvm_alloc_register_untyped(p -> rf, t -> wide);
+ jvm_generate(p, 0, t -> cell_size, "%cload %i", t -> prefix, reg);
+ }
+ use_size += t -> cell_size;
+ param = param -> 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_NOTYPE)
+ {
+ 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(const char * dir, 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(dir, 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
memset(t, 0, sizeof *t);
type -> gen_type = t;
+ gen_context_t * c;
+ c = ctx -> gen_context;
+
+ gen_module_t * m;
switch(type -> class)
{
- case OBERON_TYPE_VOID:
+ case OBERON_TYPE_NOTYPE:
case OBERON_TYPE_INTEGER:
case OBERON_TYPE_BOOLEAN:
case OBERON_TYPE_ARRAY:
+ case OBERON_TYPE_POINTER:
case OBERON_TYPE_REAL:
+ case OBERON_TYPE_CHAR:
+ 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:
- oberon_generate_record_class(ctx, type);
+ m = type -> module -> gen_mod;
+ t -> full_name = jvm_get_class_full_name(type);
+ oberon_generate_record_class(c -> dir, m, type);
break;
case OBERON_TYPE_PROCEDURE:
- oberon_generate_procedure_class(ctx, type);
- break;
- case OBERON_TYPE_POINTER:
- assert(type -> base -> class == OBERON_TYPE_VOID);
+ oberon_generate_procedure_class(c -> dir, type);
break;
default:
- oberon_error(ctx, "oberon_generator_init_type: unk calss %i", type -> class);
+ gen_error("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;
+ if(type -> class != OBERON_TYPE_NOTYPE)
+ {
+ t -> wide = jvm_is_wide_type(type);
+ t -> prefix = jvm_get_prefix(type);
+ t -> postfix = jvm_get_postfix(type);
+ }
- name = x -> name;
- desc = get_descriptor(ctx, x -> type);
- switch(x -> class)
+ if((type -> class == OBERON_TYPE_POINTER && type -> base -> class == OBERON_TYPE_RECORD) ||
+ type -> class == OBERON_TYPE_PROCEDURE ||
+ type -> class == OBERON_TYPE_RECORD ||
+ type -> class == OBERON_TYPE_SYSTEM_PTR)
{
- 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);
- break;
+ t -> full_name = jvm_get_class_full_name(type);
+ }
+
+ t -> cell_size = jvm_cell_size_for_type(type);
+
+ if(type -> class != OBERON_TYPE_NIL)
+ {
+ t -> desc = jvm_get_descriptor(type);
}
}
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);
+ jvm_generate_var(field -> gen_var);
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++)
+ {
+ jvm_generate(p, 0, 1, "aload_0");
+ jvm_generate_var_initialization(p, field -> gen_var);
- fclose(fp);
+ if(field -> type -> class == OBERON_TYPE_RECORD
+ || field -> type -> class == OBERON_TYPE_ARRAY)
+ {
+ jvm_generate(p, 0, 1, "aload_0");
+ jvm_generate_ldst_prepare(p, field -> gen_var);
+ jvm_generate_new(p, field -> type, 0);
+ jvm_generate_store(p, 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);
+ char * signature = new_string("(%s%s)V", rec -> gen_type -> desc, rec -> gen_type -> desc);
+ jvm_generate_function_header(p, "public static", "$COPY$", signature);
+
+ gen_var_t * copy_dst = jvm_create_function_var(p, JVM_STORAGE_REGISTER, "dst", rec -> gen_type);
+ gen_var_t * copy_src = jvm_create_function_var(p, JVM_STORAGE_REGISTER, "src", rec -> gen_type);
+ jvm_generate_var(copy_dst);
+ jvm_generate_var(copy_src);
+ 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++)
+ {
+ if(field -> type -> class == OBERON_TYPE_RECORD)
+ {
+ jvm_generate_load(p, copy_dst);
+ jvm_generate_load(p, field -> gen_var);
+ jvm_generate_load(p, copy_src);
+ jvm_generate_load(p, field -> gen_var);
+ jvm_generate_copy_record(p, field -> type);
+ }
+ else if(field -> type -> class == OBERON_TYPE_ARRAY)
+ {
+ jvm_generate_load(p, copy_dst);
+ jvm_generate_load(p, field -> gen_var);
+ jvm_generate_load(p, copy_src);
+ jvm_generate_load(p, field -> gen_var);
+ jvm_generate_copy_array(p, field -> type);
+ }
+ else
+ {
+ jvm_generate_load(p, copy_dst);
+ jvm_generate_ldst_prepare(p, field -> gen_var);
+ jvm_generate_load(p, copy_src);
+ jvm_generate_load(p, field -> gen_var);
+ jvm_generate_store(p, field -> gen_var);
+ }
+ field = field -> next;
+ }
+ jvm_generate(p, 0, 0, "return");
+ jvm_generate_function_end(p);
+
+ 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);
- var -> gen_var = v;
+ gen_module_t * m;
+ m = ctx -> mod -> gen_mod;
+
+ struct gen_class * class;
+ class = m -> class;
- gen_module_t * m = ctx -> mod -> gen_mod;
+ gen_proc_t * p;
+ 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:
+ p = var -> parent -> gen_proc;
+ var -> gen_var = jvm_create_function_var(p, JVM_STORAGE_FRAME_PARAM_VARPTR, name, t);
+ break;
case OBERON_CLASS_PARAM:
+ p = var -> parent -> gen_proc;
+ var -> gen_var = jvm_create_function_var(p, JVM_STORAGE_FRAME_PARAM_VAR, name, t);
+ break;
case OBERON_CLASS_FIELD:
+ c = var -> parent_type -> gen_type -> class;
+ var -> gen_var = jvm_create_class_var(c, JVM_STORAGE_FIELD_VAR, name, t);
break;
case OBERON_CLASS_VAR:
- oberon_generate_object(ctx, m -> fp, var);
+ if(var -> local)
+ {
+ p = var -> parent -> gen_proc;
+ var -> gen_var = jvm_create_function_var(p, JVM_STORAGE_FRAME_VAR, name, t);
+ }
+ else
+ {
+ var -> gen_var = jvm_create_class_var(class, JVM_STORAGE_STATIC_VAR, name, t);
+ jvm_generate_var(var -> gen_var);
+ }
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_proc(oberon_context_t * ctx, oberon_object_t * proc)
+static void
+oberon_generate_static_initialization(gen_proc_t * p, oberon_object_t * x)
{
- gen_proc_t * p = GC_MALLOC(sizeof *p);
- memset(p, 0, sizeof *p);
- proc -> gen_proc = p;
-
- if(proc -> local)
+ if(x -> type -> class == OBERON_TYPE_ARRAY
+ || x -> type -> class == OBERON_TYPE_RECORD)
{
- oberon_error(ctx, "generator: local procedures not implemented");
+ jvm_generate_ldst_prepare(p, x -> gen_var);
+ jvm_generate_new(p, x -> type, 0);
+ jvm_generate_store(p, x -> gen_var);
}
}
+void
+oberon_generator_init_temp_var(oberon_context_t * ctx, oberon_object_t * var)
+{
+ assert(var -> class == OBERON_CLASS_VAR);
+
+ gen_module_t * m;
+ m = ctx -> mod -> gen_mod;
+
+ gen_proc_t * p;
+ p = m -> class -> p;
+
+ gen_type_t * t;
+ t = var -> type -> gen_type;
+
+ var -> gen_var = jvm_create_function_temp_var(p, t);
+ jvm_generate_var(var -> gen_var);
+ jvm_generate_var_initialization(p, var -> gen_var);
+ oberon_generate_static_initialization(p, var);
+}
+
+void
+oberon_generator_init_proc(oberon_context_t * ctx, oberon_object_t * proc)
+{
+ struct gen_class * class = proc -> module -> gen_mod -> class;
+ proc -> gen_proc = jvm_create_proc(class);
+ proc -> gen_proc -> full_name = jvm_get_field_full_name_safe(proc);
+ jvm_create_static_links(proc);
+}
+
void
oberon_generator_init_module(oberon_context_t * ctx, oberon_module_t * mod)
{
memset(m, 0, sizeof *m);
mod -> gen_mod = m;
- int fnamesz = strlen(mod -> name) + 3;
- char fname[fnamesz + 1];
- snprintf(fname, fnamesz, "%s.j", mod -> name);
+ gen_context_t * c;
+ c = ctx -> gen_context;
- FILE * fp;
- fp = fopen(fname, "w");
- assert(fp != NULL);
+ struct gen_class * class;
+ class = jvm_create_class(c -> dir, 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");
+
+ fprintf(class -> fp, ".field private static $INITIALIZED$ Z\n\n");
+
+ m -> class = class;
- fprintf(fp, ".source %s\n", mod -> name);
- fprintf(fp, ".class %s\n", mod -> name);
- fprintf(fp, ".super java/lang/Object\n\n");
+ c -> current_m = m;
+}
- m -> fp = fp;
+void
+oberon_generator_fini_module(oberon_module_t * mod)
+{
+ jvm_destroy_class(mod -> gen_mod -> class);
}
-// =======================================================================
-// GENERATOR
-// =======================================================================
+static void
+push_expr(gen_proc_t * p, oberon_expr_t * expr);
void
oberon_generate_begin_module(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_proc_t * p;
+ int label_cont;
+ struct gen_class * class;
+
+ class = ctx -> mod -> gen_mod -> class;
+
+ p = jvm_create_proc(class);
+ jvm_generate_function_header(p, "public static", "BEGIN", "()V");
+
+ label_cont = jvm_new_label_id(p);
+ jvm_generate(p, 0, 1, "getstatic %s/$INITIALIZED$ Z", class -> full_name);
+ jvm_generate(p, 1, 0, "ifeq L%i", label_cont);
+ jvm_generate(p, 0, 0, "return");
+ jvm_generate_label(p, label_cont);
+
+ jvm_generate(p, 0, 1, "iconst_1");
+ jvm_generate(p, 1, 0, "putstatic %s/$INITIALIZED$ Z", class -> full_name);
+
+ /* Инициализация переменных объявленных в модуле */
+ oberon_object_t * x = ctx -> mod -> decl -> list -> next;
+ while(x != NULL)
+ {
+ if(x -> class == OBERON_CLASS_MODULE)
+ {
+ 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);
+ oberon_generate_static_initialization(p, x);
+ }
+
+ x = x -> next;
+ }
}
void
oberon_generate_end_module(oberon_context_t * ctx)
{
- gen_module_t * m = ctx -> mod -> gen_mod;
+ 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);
+
+ p = jvm_create_proc(class);
+ jvm_generate_function_header(p, "private", "<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");
+ jvm_generate(p, 0, 0, "return");
+ jvm_generate_function_end(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");
+/*
+ * 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)
+{
+ jvm_generate_ldst_prepare(p, v);
+
+ int dim = 0;
+ oberon_type_t * base = arr;
+ while(base -> class == OBERON_TYPE_ARRAY)
+ {
+ if(base -> size == 0)
+ {
+ jvm_generate_load(p, 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, v);
+ jvm_generate_copy_array(p, arr);
+ jvm_generate_store(p, v);
+}
+
+static void
+jvm_generate_record_duplicate_and_replace(gen_proc_t * p, gen_var_t * v, oberon_type_t * rec)
+{
+ jvm_generate_ldst_prepare(p, v);
+ jvm_generate_new(p, rec, 0);
+ jvm_generate(p, 1, 2, "dup");
+ jvm_generate_load(p, v);
+ jvm_generate_copy_record(p, rec);
+ jvm_generate_store(p, v);
+}
+
+static void
+jvm_generate_local_object(gen_proc_t * p, oberon_object_t * x)
+{
+ gen_var_t * v;
+ struct gen_class * class;
+
+ v = x -> gen_var;
+ class = p -> class;
+
+ // Убеждаемся что сейчас находимся в функции
+ assert(class -> p);
+ assert(x -> local);
+
+ switch(x -> class)
+ {
+ case OBERON_CLASS_VAR_PARAM:
+ case OBERON_CLASS_PARAM:
+ 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 class %i", x -> class);
+ break;
+ }
+}
+
+static void
+jvm_generate_local_initialization(gen_proc_t * p, oberon_object_t * x)
+{
+ gen_var_t * v;
+ struct gen_class * class;
+
+ v = x -> gen_var;
+ class = p -> class;
+
+ // Убеждаемся что сейчас находимся в функции
+ assert(class -> p);
+ assert(x -> local);
+
+ 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 class %i", x -> class);
+ break;
+ }
}
void
oberon_generate_begin_proc(oberon_context_t * ctx, oberon_object_t * proc)
{
- gen_module_t * m;
+ gen_proc_t * p;
+ char * name;
char * signature;
+ oberon_object_t * var;
+
+ p = proc -> gen_proc;
+
+ if(proc -> local)
+ {
+ signature = jvm_get_local_procedure_signature(proc);
+ }
+ else
+ {
+ oberon_generate_procedure_pointer_class(p -> class -> dir, proc);
+ signature = jvm_get_procedure_signature(proc -> type);
+ }
+
+ name = jvm_get_name(proc);
+ p -> ret_prefix = jvm_get_prefix(proc -> type -> base);
+ jvm_generate_function_header(p, "public static", name, signature);
+
+ if(proc -> local)
+ {
+ jvm_generate_staticlinks(proc);
+ }
+
+ jvm_generate_procedure_frame(proc);
+
+ /* Создание параметров и переменных */
+ var = proc -> scope -> list -> next;
+ while(var)
+ {
+ jvm_generate_local_object(p, var);
+ var = var -> next;
+ }
+
+ jvm_generate_frame_initialization(p);
+
+ /* Инициализация парамеров и переменных */
+ var = proc -> scope -> list -> next;
+ while(var)
+ {
+ jvm_generate_local_initialization(p, var);
+ var = var -> next;
+ }
+}
+
+void
+oberon_generate_end_proc(oberon_context_t * ctx)
+{
+ gen_module_t * m;
+ gen_proc_t * p;
m = ctx -> mod -> gen_mod;
- signature = get_procedure_signature(ctx, proc -> type);
+ p = m -> class -> p;
- fprintf(m -> fp, ".method public static %s%s\n", proc -> name, signature);
+ oberon_generate_trap(ctx, -4);
+
+ if(p -> ret_prefix == ' ')
+ {
+ jvm_generate(p, 0, 0, "return");
+ }
+ else
+ {
+ int sz = jvm_cell_size_for_postfix(p -> ret_prefix);
+ switch(p -> ret_prefix)
+ {
+ case 'a':
+ jvm_generate(p, 0, 1, "aconst_null");
+ break;
+ case 'l':
+ jvm_generate_push_int_size(p, 0, 8);
+ break;
+ case 'f':
+ jvm_generate_push_float(p, 0, 4);
+ break;
+ case 'd':
+ jvm_generate_push_float(p, 0, 8);
+ break;
+ default:
+ jvm_generate_push_int(p, 0);
+ break;
+ }
+ jvm_generate(p, sz, 0, "%creturn", p -> ret_prefix);
+ }
+
+ jvm_generate_function_end(p);
+}
+
+gen_label_t *
+oberon_generator_reserve_label(oberon_context_t * ctx)
+{
+ gen_module_t * m;
+ gen_proc_t * p;
+ gen_label_t * l;
+
+ m = ctx -> mod -> gen_mod;
+ p = m -> class -> p;
+
+ l = GC_MALLOC(sizeof *l);
+ memset(l, 0, sizeof *l);
+
+ 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)
{
- printf("call proc\n");
+ gen_module_t * m;
+ gen_proc_t * p;
+
+ m = ctx -> mod -> gen_mod;
+ p = m -> class -> p;
+
+ 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;
+
+ jvm_generate(p, 0, 0, "goto L%i", l -> id);
+}
+
+void
+oberon_generate_branch(oberon_context_t * ctx, oberon_expr_t * cond, bool gotoif, gen_label_t * l)
+{
+ gen_module_t * m;
+ gen_proc_t * p;
+
+ m = ctx -> mod -> gen_mod;
+ p = m -> class -> p;
+
+ push_expr(p, cond);
- fprintf(m -> fp, " .limit stack 32\n");
- fprintf(m -> fp, " .limit locals 32\n");
- fprintf(m -> fp, ".end method\n\n");
+ if(gotoif == false)
+ {
+ /* переход если false */
+ jvm_generate(p, 1, 0, "ifeq L%i", l -> id);
+ }
+ else
+ {
+ /* переход если true */
+ jvm_generate(p, 1, 0, "ifne L%i", l -> id);
+ }
+}
+
+static void
+push_varptr(gen_proc_t * p, oberon_expr_t * expr)
+{
+ assert(expr -> is_item);
+
+ switch(expr -> item.mode)
+ {
+ case MODE_VAR:
+ jvm_generate_ldst_prepare(p, expr -> item.var -> gen_var);
+ break;
+ case MODE_INDEX:
+ 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, 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;
+ }
+}
+
+static void
+jvm_generate_call_proc(gen_proc_t * p, oberon_item_t * desig)
+{
+ assert(desig -> var == NULL);
+ assert(desig -> mode == MODE_CALL);
+
+ bool direct_call = false;
+ if(desig -> parent -> mode == MODE_VAR)
+ {
+ if(desig -> parent -> var -> class == OBERON_CLASS_PROC)
+ {
+ direct_call = true;
+ }
+ }
+
+ oberon_type_t * procsig;
+ procsig = desig -> parent -> result;
+
+ if(direct_call == false)
+ {
+ /* Загружаем указатель на процедуру */
+ push_item(p, desig -> parent);
+ }
+
+ if(direct_call)
+ {
+ jvm_generate_push_static_links(p, desig -> parent -> var);
+ }
+
+ 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;
+ oberon_object_t * param = procsig -> decl;
+ for(int i = 0; i < num; i++)
+ {
+ if(param -> class == OBERON_CLASS_VAR_PARAM)
+ {
+ args_cells += 2;
+ push_varptr(p, arg);
+ }
+ else
+ {
+ args_cells += jvm_cell_size_for_type(arg -> result);
+ push_expr(p, arg);
+ }
+ arg = arg -> next;
+ param = param -> next;
+ }
+
+ if(direct_call)
+ {
+ char * full_name = jvm_get_field_full_name(desig -> parent -> var);
+ char * signature = jvm_get_local_procedure_signature(desig -> parent -> var);
+ jvm_generate(p, args_cells, result_cells, "invokestatic %s%s", full_name, signature);
+ }
+ else
+ {
+ char * cname = jvm_get_class_full_name(procsig);
+ char * signature = jvm_get_procedure_signature(procsig);
+ jvm_generate(p, 1 + args_cells, result_cells, "invokevirtual %s/invoke%s", cname, signature);
+ }
+}
+
+void
+oberon_generate_call_proc(oberon_context_t * ctx, oberon_expr_t * desig)
+{
+ 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)
{
- oberon_error(ctx, "oberon_generate_return: TODO return expr");
+ 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
{
- fprintf(m -> fp, " return\n");
+ jvm_generate(p, 0, 0, "return");
}
}
static void
-push_int(FILE * fp, long i)
+jvm_generate_expr_new_pointer(gen_proc_t * p, oberon_type_t * type, int num, oberon_expr_t * arg)
{
- if(i == -1)
- {
- fprintf(fp, "iconst_m1\n");
- }
- else if(i >= 0 && i <= 5)
- {
- fprintf(fp, "iconst_%li\n", i);
- }
- else if(i >= -128 && i <= 127)
- {
- fprintf(fp, "bipush %li\n", i);
- }
- else if(i >= -32768 && i <= 32767)
+ assert(type -> class == OBERON_TYPE_POINTER);
+
+ for(int i = 0; i < num; i++)
{
- fprintf(fp, "sipush %li\n", i);
+ push_expr(p, arg);
+ check_index(p, arg -> result);
+ arg = arg -> next;
}
- else if(i >= -2147483648 && i <= 2147483647)
+
+ jvm_generate_new(p, type -> base, num);
+}
+
+static void
+push_item(gen_proc_t * p, oberon_item_t * item)
+{
+ switch(item -> mode)
{
- fprintf(fp, "ldc %li\n", i);
+ case MODE_VAR:
+ if(item -> var -> class == OBERON_CLASS_PROC)
+ {
+ jvm_generate_push_procedure_pointer(p, item -> var);
+ }
+ else
+ {
+ jvm_generate_load(p, item -> var -> gen_var);
+ }
+ break;
+ case MODE_INTEGER:
+ case MODE_BOOLEAN:
+ case MODE_CHAR:
+ case MODE_SET:
+ jvm_generate_push_int_size(p, item -> integer, item -> result -> size);
+ break;
+ case MODE_CALL:
+ jvm_generate_call_proc(p, item);
+ break;
+ case MODE_INDEX:
+ ;
+ char postfix = jvm_get_postfix(item -> result);
+ 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:
+ push_item(p, item -> parent);
+ jvm_generate_load(p, item -> var -> gen_var);
+ break;
+ case MODE_DEREF:
+ /* Все объекты в jvm представляются как указатели */
+ push_item(p, item -> parent);
+ break;
+ case MODE_NIL:
+ jvm_generate(p, 0, 1, "aconst_null");
+ break;
+ case MODE_NEW:
+ jvm_generate_expr_new_pointer(p, item -> result, item -> num_args, item -> args);
+ break;
+ case MODE_REAL:
+ 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;
+ case MODE_LEN:
+ push_item(p, item -> parent);
+ 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;
}
- else
+}
+
+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);
+
+ jvm_generate(p, 1, 0, "ifne L%i", label_false);
+ jvm_generate(p, 0, 1, "iconst_1");
+ jvm_generate(p, 0, 0, "goto L%i", label_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)
{
- fprintf(fp, "ldc2 %li\n", i);
+ 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:
+ gen_error("jvm_generate_compare_op: wat");
+ break;
}
+ return cmpop;
}
static void
-push_float(FILE * fp, double f, int size)
+jvm_generate_compare_op(gen_proc_t * p, oberon_type_t * t, int op)
{
- if(size <= 4)
+ 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')
{
- if(f == 0.0)
- {
- fprintf(fp, "fconst_0\n");
- }
- if(f == 1.0)
- {
- fprintf(fp, "fconst_1\n");
- }
- if(f == 2.0)
+ 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)
{
- fprintf(fp, "fconst_2\n");
+ fop = 'l';
}
else
{
- fprintf(fp, "ldc %lf\n", f);
+ 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
+ else if(prefix == 'a')
{
- if(f == 0.0)
- {
- fprintf(fp, "dconst_0\n");
- }
- if(f == 1.0)
+ if(oberon_is_array_of_char_type(t) || oberon_is_string_type(t))
{
- fprintf(fp, "dconst_1\n");
+ jvm_generate(p, 2, 1, "invokestatic SYSTEM/STRCMP([B[B)I");
+ jvm_generate(p, 1, 0, "if%s L%i", cmpop, label_true);
}
else
{
- fprintf(fp, "ldc2 %lf\n", f);
+ jvm_generate(p, 1, 0, "if_acmp%s L%i", cmpop, label_true);
}
}
-}
-
-static void push_expr(oberon_context_t * ctx, FILE * fp, oberon_expr_t * expr);
-
-static void
-push_var(oberon_context_t * ctx, FILE * fp, oberon_object_t * var)
-{
- if(var -> local)
- {
- int reg = var -> gen_var -> reg;
- char prefix = get_prefix(ctx, var -> type);
- fprintf(fp, "%cload %i\n", prefix, reg);
- }
else
{
- char * fullname = get_field_full_name(ctx, var);
- char * desc = get_descriptor(ctx, var -> type);
- fprintf(fp, "getstatic %s %s\n", fullname, desc);
+ 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_item(oberon_context_t * ctx, FILE * fp, oberon_item_t * item)
+jvm_generate_operator(gen_proc_t * p, oberon_type_t * t, int op)
{
- switch(item -> mode)
+ char prefix = jvm_get_prefix(t);
+ int cell_size = jvm_cell_size_for_type(t);
+ switch(op)
{
- case MODE_VAR:
- push_var(ctx, fp, item -> var);
+ case OP_UNARY_MINUS:
+ jvm_generate(p, cell_size, cell_size, "%cneg", prefix);
break;
- case MODE_INTEGER:
- push_int(fp, item -> integer);
+ case OP_COMPLEMENTATION:
+ jvm_generate_push_int_size(p, -1, t -> size);
+ jvm_generate(p, 2 * cell_size, cell_size, "%cxor", prefix);
break;
- case MODE_BOOLEAN:
- push_int(fp, item -> boolean);
+ case OP_LOGIC_NOT:
+ jvm_generate_logical_not(p);
break;
- case MODE_CALL:
- oberon_error(ctx, "push_item: TODO call");
+ case OP_ABS:
+ jvm_generate_abs(p, prefix);
break;
- case MODE_INDEX:
- oberon_error(ctx, "push_item: TODO index");
+ case OP_CAP:
+ jvm_generate(p, cell_size, cell_size, "invokestatic java/lang/Character/toUpperCase(I)I");
break;
- case MODE_FIELD:
- oberon_error(ctx, "push_item: TODO field");
+
+ case OP_ADD:
+ jvm_generate(p, 2 * cell_size, cell_size, "%cadd", prefix);
break;
- case MODE_DEREF:
- oberon_error(ctx, "push_item: TODO deref");
+ case OP_SUB:
+ jvm_generate(p, 2 * cell_size, cell_size, "%csub", prefix);
break;
- case MODE_NIL:
- fprintf(fp, "aconst_null\n");
+ case OP_MUL:
+ jvm_generate(p, 2 * cell_size, cell_size, "%cmul", prefix);
break;
- case MODE_NEW:
- oberon_error(ctx, "push_item: TODO new");
+ case OP_DIV:
+ jvm_generate(p, 2 * cell_size, cell_size, "%cdiv", prefix);
break;
- case MODE_REAL:
- push_float(fp, item -> real, item -> result -> size);
+ case OP_MOD:
+ jvm_generate(p, 2 * cell_size, cell_size, "%crem", prefix);
+ break;
+ case OP_UNION:
+ jvm_generate(p, 2 * cell_size, cell_size, "%cor", prefix);
+ break;
+ case OP_INTERSECTION:
+ jvm_generate(p, 2 * cell_size, cell_size, "%cand", prefix);
+ break;
+ case OP_DIFFERENCE:
+ /* (a - b) == a & ~b */
+ 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_NEQ:
+ case OP_LSS:
+ case OP_LEQ:
+ case OP_GRT:
+ case OP_GEQ:
+ jvm_generate_compare_op(p, t, op);
break;
default:
- oberon_error(ctx, "push_item: unk mode %i", item -> mode);
+ 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);
+
+ /* a OR b -- если a, то TRUE, иначе b */
+
+ push_expr(p, a);
+ jvm_generate(p, 1, 0, "ifeq L%i", label_calc_b);
+ jvm_generate(p, 0, 1, "iconst_1");
+ jvm_generate(p, 0, 0, "goto L%i", label_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);
+
+ /* a AND b -- если a, то b, иначе FALSE */
+
+ push_expr(p, a);
+ jvm_generate(p, 1, 0, "ifeq L%i", label_false);
+ push_expr(p, b);
+ jvm_generate(p, 0, 0, "goto L%i", label_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 * type;
+ gen_var_t * ra;
+ gen_var_t * rb;
+ int label_else;
+ int label_end;
+
+ type = a -> result;
+ cell_size = jvm_cell_size_for_type(type);
+ prefix = jvm_get_prefix(type);
+
+ if(b == NULL)
+ {
+ jvm_generate_push_int_size(p, 1, type -> size);
+ push_expr(p, a);
+ jvm_generate(p, 2 * cell_size, cell_size, "%cshl", prefix);
+ }
+ else
+ {
+ ra = jvm_create_function_temp_var(p, type -> gen_type);
+ rb = jvm_create_function_temp_var(p, type -> gen_type);
+ jvm_generate_var(ra);
+ jvm_generate_var(rb);
+ jvm_generate_var_initialization(p, ra);
+ jvm_generate_var_initialization(p, rb);
+ label_else = jvm_new_label_id(p);
+ label_end = jvm_new_label_id(p);
+
+ push_expr(p, a);
+ jvm_generate_store(p, ra);
+ push_expr(p, b);
+ jvm_generate_store(p, rb);
+
+ jvm_generate_load(p, ra);
+ jvm_generate_load(p, rb);
+ jvm_generate(p, 2 * cell_size, 0, "if_%ccmpgt L%i", prefix, label_else);
+
+ jvm_generate_push_int_size(p, 2, type -> size);
+ jvm_generate_load(p, rb);
+ jvm_generate(p, 2 * cell_size, cell_size, "%cshl", prefix);
+ jvm_generate_push_int_size(p, 2, type -> size);
+ jvm_generate_load(p, 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, type -> 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);
+
+ /* (a IN b) == (1 << a) & b */
+ 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
+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);
+ char dt = jvm_get_type_of_prefix(prefix);
+
+ push_expr(p, a);
+ jvm_generate_cast_type(p, a -> result, t);
+ push_expr(p, b);
+ jvm_generate_cast_type(p, b -> result, t);
+
+ char * opname;
+ switch(op)
+ {
+ 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(p, 2 * cell_size, cell_size, "invokestatic SYSTEM/%s(%c%c)%c", opname, dt, dt, dt);
}
static void
-push_operator(oberon_context_t * ctx, FILE * fp, oberon_oper_t * oper)
+jvm_generate_entier(gen_proc_t * p, oberon_expr_t * x, oberon_type_t * res)
{
- char prefix = get_prefix(ctx, oper -> result);
- switch(oper -> op)
+ char prefix = jvm_get_prefix(x -> result);
+ char postfix = jvm_get_postfix(res);
+
+ push_expr(p, x);
+ jvm_generate_cast_prefix(p, prefix, 'd');
+ jvm_generate(p, 2, 2, "invokestatic java/lang/Math/floor(D)D");
+ jvm_generate_cast_prefix(p, 'd', postfix);
+}
+
+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_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:
- push_expr(ctx, fp, oper -> left);
- fprintf(fp, "%cneg\n", prefix);
+ case OP_LOGIC_NOT:
+ case OP_ABS:
+ case OP_CAP:
+ push_expr(p, oper -> left);
+ jvm_generate_operator(p, preq, op);
break;
- case OP_BITWISE_NOT:
- push_expr(ctx, fp, oper -> left);
- push_int(fp, -1);
- fprintf(fp, "%cxor\n", prefix);
+ case OP_ENTIER:
+ jvm_generate_entier(p, oper -> left, oper -> result);
break;
case OP_ADD:
- push_expr(ctx, fp, oper -> left);
- push_expr(ctx, fp, oper -> right);
- fprintf(fp, "%cadd\n", prefix);
- break;
case OP_SUB:
- push_expr(ctx, fp, oper -> left);
- push_expr(ctx, fp, oper -> right);
- fprintf(fp, "%csub\n", prefix);
- break;
case OP_MUL:
- push_expr(ctx, fp, oper -> left);
- push_expr(ctx, fp, oper -> right);
- fprintf(fp, "%cmul\n", prefix);
- break;
case OP_DIV:
- push_expr(ctx, fp, oper -> left);
- push_expr(ctx, fp, oper -> right);
- fprintf(fp, "%cdiv\n", prefix);
- break;
case OP_MOD:
- push_expr(ctx, fp, oper -> left);
- push_expr(ctx, fp, oper -> right);
- fprintf(fp, "%crem\n", prefix);
- break;
- case OP_BITWISE_AND:
- push_expr(ctx, fp, oper -> left);
- push_expr(ctx, fp, oper -> right);
- fprintf(fp, "%cand\n", prefix);
- break;
- case OP_BITWISE_XOR:
- push_expr(ctx, fp, oper -> left);
- push_expr(ctx, fp, oper -> right);
- fprintf(fp, "%cxor\n", prefix);
- break;
- case OP_BITWISE_OR:
- push_expr(ctx, fp, oper -> left);
- push_expr(ctx, fp, oper -> right);
- fprintf(fp, "%cor\n", prefix);
- break;
+
+ case OP_UNION:
+ case OP_INTERSECTION:
+ case OP_DIFFERENCE:
+ case OP_SYM_DIFFERENCE:
case OP_EQ:
case OP_NEQ:
case OP_LEQ:
case OP_GRT:
case OP_GEQ:
- case OP_LOGIC_NOT:
- case OP_ABS:
- oberon_error(ctx, "push_oper: TODO op %i", oper -> op);
+ 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;
+
+ case OP_ASH:
+ case OP_LSH:
+ case OP_ROT:
+ jvm_generate_shift(p, op, 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);
- }
+ jvm_generate_ldst_prepare(p, item -> var -> gen_var);
+ push_expr(p, src);
+ jvm_generate_store(p, 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);
+ check_index(p, item -> args -> result);
+ 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);
+ jvm_generate_ldst_prepare(p, item -> var -> gen_var);
+ push_expr(p, src);
+ jvm_generate_store(p, 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;
+
+ store_expr(p, dst, src);
+}
+
+void
+oberon_generate_copy(oberon_context_t * ctx, oberon_expr_t * src, oberon_expr_t * dst)
+{
+ gen_module_t * m;
+ gen_proc_t * p;
+ char * desc;
+
+ m = ctx -> mod -> gen_mod;
+ p = m -> class -> p;
+
+ push_expr(p, src);
+ push_expr(p, dst);
+
+ desc = jvm_get_descriptor(dst -> result);
+
+ jvm_generate(p, 2, 0, "invokestatic SYSTEM/COPY(%s%s)V", desc, desc);
+}
+
+void
+oberon_generate_assert(oberon_context_t * ctx, oberon_expr_t * cond)
+{
+ gen_module_t * m;
+ gen_proc_t * p;
+
+ m = ctx -> mod -> gen_mod;
+ p = m -> class -> p;
+
+ push_expr(p, cond);
+ jvm_generate(p, 1, 0, "invokestatic SYSTEM/ASSERT(Z)V");
+}
+
+void
+oberon_generate_assert_n(oberon_context_t * ctx, oberon_expr_t * cond, int64_t n)
+{
+ gen_module_t * m;
+ gen_proc_t * p;
+
+ m = ctx -> mod -> gen_mod;
+ p = m -> class -> p;
+
+ push_expr(p, cond);
+ jvm_generate_push_int_size(p, n, 8);
+ jvm_generate(p, 1 + 2, 0, "invokestatic SYSTEM/ASSERT(ZJ)V");
+}
+
+void
+oberon_generate_trap(oberon_context_t * ctx, int64_t n)
+{
+ 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);
+ jvm_generate_push_int_size(p, n, 8);
+ jvm_generate(p, 2, 0, "invokestatic SYSTEM/TRAP(J)V");
}
void
-oberon_generate_code(oberon_context_t * ctx)
+oberon_generate_halt(oberon_context_t * ctx, int64_t n)
{
- printf("generate code\n");
+ gen_module_t * m;
+ gen_proc_t * p;
+
+ m = ctx -> mod -> gen_mod;
+ p = m -> class -> p;
+
+ jvm_generate_push_int_size(p, n, 8);
+ jvm_generate(p, 2, 0, "invokestatic SYSTEM/HALT(J)V");
}
void
-oberon_generator_dump(oberon_context_t * ctx, char * path)
+oberon_set_out_directory(oberon_context_t * ctx, const char * path)
{
- printf("jit: dump code\n");
+ gen_context_t * c;
+
+ c = ctx -> gen_context;
+
+ c -> dir = new_string(path);
}
-void *
-oberon_generator_get_procedure(oberon_context_t * ctx, const char * name)
+void
+oberon_set_typecheck(oberon_object_t * var, bool enable)
{
- printf("jit: get pointer to procedure %s\n", name);
- return NULL;
+ var -> gen_var -> typecheck = enable;
+ var -> gen_var -> forcetype = (enable) ? (var -> type -> gen_type) : (NULL);
}
-void *
-oberon_generator_get_var(oberon_context_t * ctx, const char * name)
+void oberon_set_line(oberon_context_t * ctx, int line)
{
- printf("jit: get pointer to var %s\n", name);
- return NULL;
+ gen_module_t * m;
+ gen_proc_t * p;
+
+ m = ctx -> mod -> gen_mod;
+ if(m != NULL)
+ {
+ p = m -> class -> p;
+
+ if(p != NULL)
+ {
+ jvm_generate(p, 0, 0, ".line %i", line);
+ }
+
+ m -> line = line;
+ }
}