X-Git-Url: http://deadsoftware.ru/gitweb?a=blobdiff_plain;f=generator.c;h=b0887aee7c82587beed212c50e56cac179a32b72;hb=e763da864f7330c2b53029782c6b0d85543eb4d2;hp=bad063d57adcac9ee2c45d5f1442febdf5839055;hpb=d1b4e7fdab92589146e19cf4b8b402edf4d6b33d;p=dsw-obn.git diff --git a/generator.c b/generator.c index bad063d..b0887ae 100644 --- a/generator.c +++ b/generator.c @@ -4,10 +4,26 @@ #include #include #include +#include + +#include #include "oberon.h" #include "generator.h" +// ======================================================================= +// INTERNAL FUNCTIONS +// ======================================================================= + +static void * +__OBERON_ALLOC__ (size_t bytes) +{ + void * p = GC_MALLOC(bytes); + memset(p, 0, bytes); + printf("allocated %lu bytes\n", bytes); + return p; +} + // ======================================================================= // ALLOC // ======================================================================= @@ -41,6 +57,15 @@ oberon_generator_init_context(oberon_context_t * ctx) ctx -> gen_context = gen_context; gen_context -> gcc_context = gcc_context; + + gcc_jit_type * void_ptr_type = gcc_jit_context_get_type(gcc_context, GCC_JIT_TYPE_VOID_PTR); + gcc_jit_type * size_type = gcc_jit_context_get_type(gcc_context, GCC_JIT_TYPE_SIZE_T); + gcc_jit_type * alloc_ptr_type = gcc_jit_context_new_function_ptr_type( + gcc_context, NULL, void_ptr_type, 1, &size_type, 0 + ); + gen_context -> gcc_alloc = gcc_jit_context_new_global( + gcc_context, NULL, GCC_JIT_GLOBAL_EXPORTED, alloc_ptr_type, "__OBERON_ALLOC__" + ); } void @@ -74,7 +99,33 @@ oberon_generator_init_type(oberon_context_t * ctx, oberon_type_t * type) } else if(type -> class == OBERON_TYPE_BOOLEAN) { - gcc_type = gcc_jit_context_get_type(gcc_context, GCC_JIT_TYPE_BOOL); + if(type -> size == sizeof(bool)) + { + gcc_type = gcc_jit_context_get_type(gcc_context, GCC_JIT_TYPE_BOOL); + } + else + { + oberon_error(ctx, "generator: unsupported boolean size"); + } + } + else if(type -> class == OBERON_TYPE_REAL) + { + if(type -> size == sizeof(float)) + { + gcc_type = gcc_jit_context_get_type(gcc_context, GCC_JIT_TYPE_FLOAT); + } + else if(type -> size == sizeof(double)) + { + gcc_type = gcc_jit_context_get_type(gcc_context, GCC_JIT_TYPE_DOUBLE); + } + else if(type -> size == sizeof(long double)) + { + gcc_type = gcc_jit_context_get_type(gcc_context, GCC_JIT_TYPE_LONG_DOUBLE); + } + else + { + oberon_error(ctx, "generator: unsupported real size"); + } } else if(type -> class == OBERON_TYPE_ARRAY) { @@ -299,6 +350,54 @@ oberon_generator_init_proc(oberon_context_t * ctx, oberon_object_t * proc) static gcc_jit_rvalue * rvalue_from_item(oberon_context_t * ctx, oberon_item_t * item); static gcc_jit_rvalue * rvalue_from_expr(oberon_context_t * ctx, oberon_expr_t * expr); +static int +oberon_generator_get_type_size(oberon_context_t * ctx, oberon_type_t * type) +{ + int size = 0; + switch(type -> class) + { + case OBERON_TYPE_INTEGER: + size = type -> size; + printf("int size: %i\n", size); + break; + case OBERON_TYPE_BOOLEAN: + size = sizeof(bool); + printf("bool size: %i\n", size); + break; + case OBERON_TYPE_PROCEDURE: + case OBERON_TYPE_POINTER: + size = sizeof(void*); + printf("ptr size: %i\n", size); + break; + case OBERON_TYPE_ARRAY: + size = type -> size; + type = type -> base; + size = (size == 0) ? (1) : (size); + size *= oberon_generator_get_type_size(ctx, type); + printf("array size: %i\n", size); + break; + case OBERON_TYPE_RECORD: + { + int num = type -> num_decl; + oberon_object_t * arg = type -> decl; + for(int i = 0; i < num; i++) + { + oberon_type_t * x; + x = arg -> type; + size += oberon_generator_get_type_size(ctx, x); + arg = arg -> next; + } + } + printf("struct size: %i\n", size); + break; + default: + oberon_error(ctx, "oberon_generator_get_type_size: wat"); + break; + } + + return size; +} + void oberon_generate_begin_module(oberon_context_t * ctx) { @@ -423,7 +522,7 @@ lvalue_from_item(oberon_context_t * ctx, oberon_item_t * item) } else { - oberon_error(ctx, "invalid lvalue expression"); + oberon_error(ctx, "lvalue_from_item: invalid mode %i", item -> mode); } return left; @@ -548,6 +647,38 @@ rvalue_from_item(oberon_context_t * ctx, oberon_item_t * item) gcc_jit_type * type = gcc_jit_context_get_type(gcc_context, GCC_JIT_TYPE_VOID_PTR); right = gcc_jit_context_null(gcc_context, type); } + else if(item -> mode == MODE_NEW) + { + assert(item -> result -> class == OBERON_TYPE_POINTER); + + oberon_type_t * type = item -> result -> base; + int type_size = oberon_generator_get_type_size(ctx, type); + int array_size = type_size; + + int num = item -> num_args; + oberon_expr_t * arg = item -> args; + for(int i = 0; i < num; i++) + { + array_size *= arg -> item.integer; + arg = arg -> next; + } + + gcc_jit_type * size_type; + size_type = gcc_jit_context_get_type(gcc_context, GCC_JIT_TYPE_SIZE_T); + + gcc_jit_rvalue * fnarg; + fnarg = gcc_jit_context_new_rvalue_from_int(gcc_context, size_type, array_size); + + gcc_jit_type * result_type = item -> result -> gen_type -> gcc_type; + gcc_jit_rvalue * gcc_alloc = gcc_jit_lvalue_as_rvalue(gen_context -> gcc_alloc); + right = gcc_jit_context_new_call_through_ptr(gcc_context, NULL, gcc_alloc, 1, &fnarg); + right = gcc_jit_context_new_cast(gcc_context, NULL, right, result_type); + } + else if(item -> mode == MODE_REAL) + { + gcc_jit_type * int_type = gcc_jit_context_get_type(gcc_context, GCC_JIT_TYPE_FLOAT); + right = gcc_jit_context_new_rvalue_from_int(gcc_context, int_type, item -> real); + } else { oberon_error(ctx, "rvalue_from_item: invalid mode %i", item -> mode); @@ -686,6 +817,10 @@ oberon_generate_code(oberon_context_t * ctx) gen_context -> gcc_result = gcc_result; + typedef void * (*TOberonAlloc)(size_t); + TOberonAlloc * fn_alloc_ptr = gcc_jit_result_get_global(gcc_result, "__OBERON_ALLOC__"); + *fn_alloc_ptr = __OBERON_ALLOC__; + // ctx -> mod -> begin = gcc_jit_result_get_code(gcc_result, "BEGIN"); }