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nativecall.c
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nativecall.c
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#include "moar.h"
#ifndef _WIN32
#include <dlfcn.h>
#endif
#include <platform/threads.h>
#include <platform/time.h>
/* Grabs a NativeCall body. */
MVMNativeCallBody * MVM_nativecall_get_nc_body(MVMThreadContext *tc, MVMObject *obj) {
if (REPR(obj)->ID == MVM_REPR_ID_MVMNativeCall)
return (MVMNativeCallBody *)OBJECT_BODY(obj);
else
return (MVMNativeCallBody *)REPR(obj)->box_funcs.get_boxed_ref(tc,
STABLE(obj), obj, OBJECT_BODY(obj), MVM_REPR_ID_MVMNativeCall);
}
/* Gets the flag for whether to free a string after a call or not. */
static MVMint16 get_str_free_flag(MVMThreadContext *tc, MVMObject *info) {
MVMString *flag = tc->instance->str_consts.free_str;
if (MVM_repr_exists_key(tc, info, flag))
if (!MVM_repr_get_int(tc, MVM_repr_at_key_o(tc, info, flag)))
return MVM_NATIVECALL_ARG_NO_FREE_STR;
return MVM_NATIVECALL_ARG_FREE_STR;
}
/* Gets the flag for whether an arg is rw or not. */
static MVMint16 get_rw_flag(MVMThreadContext *tc, MVMObject *info) {
MVMString *flag = tc->instance->str_consts.rw;
if (MVM_repr_exists_key(tc, info, flag)) {
if (MVM_repr_get_int(tc, MVM_repr_at_key_o(tc, info, flag)))
return MVM_NATIVECALL_ARG_RW;
}
return MVM_NATIVECALL_ARG_NO_RW;
}
/* Gets the flag for whether an arg is rw or not. */
static MVMint16 get_refresh_flag(MVMThreadContext *tc, MVMObject *info) {
MVMString *typeobj_str = tc->instance->str_consts.typeobj;
if (MVM_repr_exists_key(tc, info, typeobj_str)) {
MVMObject *typeobj = MVM_repr_at_key_o(tc, info, typeobj_str);
if (REPR(typeobj)->ID == MVM_REPR_ID_MVMCArray) {
MVMCArrayREPRData *repr_data = (MVMCArrayREPRData *)STABLE(typeobj)->REPR_data;
/* No need to refresh numbers. They're stored directly in the array. */
if (repr_data->elem_kind == MVM_CARRAY_ELEM_KIND_NUMERIC)
return MVM_NATIVECALL_ARG_NO_REFRESH;
return MVM_NATIVECALL_ARG_REFRESH;
}
}
/* We don't know, so fail safe by assuming we have to refresh */
return MVM_NATIVECALL_ARG_REFRESH;
}
/* Takes a hash describing a type hands back an argument type code. */
MVMint16 MVM_nativecall_get_arg_type(MVMThreadContext *tc, MVMObject *info, MVMint16 is_return) {
MVMString *typename = MVM_repr_get_str(tc, MVM_repr_at_key_o(tc, info,
tc->instance->str_consts.type));
char *ctypename = MVM_string_utf8_encode_C_string(tc, typename);
MVMint16 result;
if (strcmp(ctypename, "void") == 0) {
if (!is_return) {
MVM_free(ctypename);
MVM_exception_throw_adhoc(tc,
"Cannot use 'void' type except for on native call return values");
}
result = MVM_NATIVECALL_ARG_VOID;
}
else if (strcmp(ctypename, "char") == 0)
result = MVM_NATIVECALL_ARG_CHAR | get_rw_flag(tc, info);
else if (strcmp(ctypename, "short") == 0)
result = MVM_NATIVECALL_ARG_SHORT | get_rw_flag(tc, info);
else if (strcmp(ctypename, "int") == 0)
result = MVM_NATIVECALL_ARG_INT | get_rw_flag(tc, info);
else if (strcmp(ctypename, "long") == 0)
result = MVM_NATIVECALL_ARG_LONG | get_rw_flag(tc, info);
else if (strcmp(ctypename, "longlong") == 0)
result = MVM_NATIVECALL_ARG_LONGLONG | get_rw_flag(tc, info);
else if (strcmp(ctypename, "uchar") == 0)
result = MVM_NATIVECALL_ARG_UCHAR | get_rw_flag(tc, info);
else if (strcmp(ctypename, "ushort") == 0)
result = MVM_NATIVECALL_ARG_USHORT | get_rw_flag(tc, info);
else if (strcmp(ctypename, "uint") == 0)
result = MVM_NATIVECALL_ARG_UINT | get_rw_flag(tc, info);
else if (strcmp(ctypename, "ulong") == 0)
result = MVM_NATIVECALL_ARG_ULONG | get_rw_flag(tc, info);
else if (strcmp(ctypename, "ulonglong") == 0)
result = MVM_NATIVECALL_ARG_ULONGLONG | get_rw_flag(tc, info);
else if (strcmp(ctypename, "float") == 0)
result = MVM_NATIVECALL_ARG_FLOAT | get_rw_flag(tc, info);
else if (strcmp(ctypename, "double") == 0)
result = MVM_NATIVECALL_ARG_DOUBLE | get_rw_flag(tc, info);
else if (strcmp(ctypename, "asciistr") == 0)
result = MVM_NATIVECALL_ARG_ASCIISTR | get_str_free_flag(tc, info);
else if (strcmp(ctypename, "utf8str") == 0)
result = MVM_NATIVECALL_ARG_UTF8STR | get_str_free_flag(tc, info);
else if (strcmp(ctypename, "utf16str") == 0)
result = MVM_NATIVECALL_ARG_UTF16STR | get_str_free_flag(tc, info);
else if (strcmp(ctypename, "cstruct") == 0)
result = MVM_NATIVECALL_ARG_CSTRUCT;
else if (strcmp(ctypename, "cppstruct") == 0)
result = MVM_NATIVECALL_ARG_CPPSTRUCT;
else if (strcmp(ctypename, "cpointer") == 0)
result = MVM_NATIVECALL_ARG_CPOINTER | get_rw_flag(tc, info);
else if (strcmp(ctypename, "carray") == 0)
result = MVM_NATIVECALL_ARG_CARRAY | get_refresh_flag(tc, info);
else if (strcmp(ctypename, "cunion") == 0)
result = MVM_NATIVECALL_ARG_CUNION;
else if (strcmp(ctypename, "vmarray") == 0)
result = MVM_NATIVECALL_ARG_VMARRAY;
else if (strcmp(ctypename, "callback") == 0)
result = MVM_NATIVECALL_ARG_CALLBACK;
else {
char *waste[] = { ctypename, NULL };
MVM_exception_throw_adhoc_free(tc, waste, "Unknown type '%s' used for native call", ctypename);
}
MVM_free(ctypename);
return result;
}
MVMObject * MVM_nativecall_make_int(MVMThreadContext *tc, MVMObject *type, MVMint64 value) {
return type ? MVM_repr_box_int(tc, type, value) : NULL;
}
MVMObject * MVM_nativecall_make_uint(MVMThreadContext *tc, MVMObject *type, MVMuint64 value) {
return type ? MVM_repr_box_int(tc, type, (MVMint64)value) : NULL;
}
MVMObject * MVM_nativecall_make_num(MVMThreadContext *tc, MVMObject *type, MVMnum64 value) {
return type ? MVM_repr_box_num(tc, type, value) : NULL;
}
MVMObject * MVM_nativecall_make_str(MVMThreadContext *tc, MVMObject *type, MVMint16 ret_type, char *cstring) {
MVMObject *result = type;
if (cstring && type) {
MVMString *value;
MVM_gc_root_temp_push(tc, (MVMCollectable **)&type);
switch (ret_type & MVM_NATIVECALL_ARG_TYPE_MASK) {
case MVM_NATIVECALL_ARG_ASCIISTR:
value = MVM_string_ascii_decode(tc, tc->instance->VMString, cstring, strlen(cstring));
break;
case MVM_NATIVECALL_ARG_UTF8STR:
value = MVM_string_utf8_decode(tc, tc->instance->VMString, cstring, strlen(cstring));
break;
case MVM_NATIVECALL_ARG_UTF16STR:
value = MVM_string_utf16_decode(tc, tc->instance->VMString, cstring, strlen(cstring));
break;
default:
MVM_exception_throw_adhoc(tc, "Internal error: unhandled encoding");
}
MVM_gc_root_temp_pop(tc);
result = MVM_repr_box_str(tc, type, value);
if (ret_type & MVM_NATIVECALL_ARG_FREE_STR)
MVM_free(cstring);
}
return result;
}
/* Constructs a boxed result using a CStruct REPR type. */
MVMObject * MVM_nativecall_make_cstruct(MVMThreadContext *tc, MVMObject *type, void *cstruct) {
MVMObject *result = type;
if (cstruct && type) {
MVMCStructREPRData *repr_data = (MVMCStructREPRData *)STABLE(type)->REPR_data;
if (REPR(type)->ID != MVM_REPR_ID_MVMCStruct)
MVM_exception_throw_adhoc(tc,
"Native call expected return type with CStruct representation, but got a %s (%s)", REPR(type)->name, MVM_6model_get_debug_name(tc, type));
result = REPR(type)->allocate(tc, STABLE(type));
((MVMCStruct *)result)->body.cstruct = cstruct;
if (repr_data->num_child_objs)
((MVMCStruct *)result)->body.child_objs = MVM_calloc(repr_data->num_child_objs, sizeof(MVMObject *));
}
return result;
}
/* Constructs a boxed result using a CUnion REPR type. */
MVMObject * MVM_nativecall_make_cunion(MVMThreadContext *tc, MVMObject *type, void *cunion) {
MVMObject *result = type;
if (cunion && type) {
MVMCUnionREPRData *repr_data = (MVMCUnionREPRData *)STABLE(type)->REPR_data;
if (REPR(type)->ID != MVM_REPR_ID_MVMCUnion)
MVM_exception_throw_adhoc(tc,
"Native call expected return type with CUnion representation, but got a %s (%s)", REPR(type)->name, MVM_6model_get_debug_name(tc, type));
result = REPR(type)->allocate(tc, STABLE(type));
((MVMCUnion *)result)->body.cunion = cunion;
if (repr_data->num_child_objs)
((MVMCUnion *)result)->body.child_objs = MVM_calloc(repr_data->num_child_objs, sizeof(MVMObject *));
}
return result;
}
MVMObject * MVM_nativecall_make_cppstruct(MVMThreadContext *tc, MVMObject *type, void *cppstruct) {
MVMObject *result = type;
if (cppstruct && type) {
MVMCPPStructREPRData *repr_data = (MVMCPPStructREPRData *)STABLE(type)->REPR_data;
if (REPR(type)->ID != MVM_REPR_ID_MVMCPPStruct)
MVM_exception_throw_adhoc(tc,
"Native call expected return type with CPPStruct representation, but got a %s (%s)", REPR(type)->name, MVM_6model_get_debug_name(tc, type));
result = REPR(type)->allocate(tc, STABLE(type));
((MVMCPPStruct *)result)->body.cppstruct = cppstruct;
if (repr_data->num_child_objs)
((MVMCPPStruct *)result)->body.child_objs = MVM_calloc(repr_data->num_child_objs, sizeof(MVMObject *));
}
return result;
}
/* Constructs a boxed result using a CPointer REPR type. */
MVMObject * MVM_nativecall_make_cpointer(MVMThreadContext *tc, MVMObject *type, void *ptr) {
MVMObject *result = type;
if (ptr && type) {
if (REPR(type)->ID != MVM_REPR_ID_MVMCPointer)
MVM_exception_throw_adhoc(tc,
"Native call expected return type with CPointer representation, but got a %s (%s)", REPR(type)->name, MVM_6model_get_debug_name(tc, type));
result = REPR(type)->allocate(tc, STABLE(type));
((MVMCPointer *)result)->body.ptr = ptr;
}
return result;
}
/* Constructs a boxed result using a CArray REPR type. */
MVMObject * MVM_nativecall_make_carray(MVMThreadContext *tc, MVMObject *type, void *carray) {
MVMObject *result = type;
if (carray && type) {
if (REPR(type)->ID != MVM_REPR_ID_MVMCArray)
MVM_exception_throw_adhoc(tc,
"Native call expected return type with CArray representation, but got a %s (%s)", REPR(type)->name, MVM_6model_get_debug_name(tc, type));
result = REPR(type)->allocate(tc, STABLE(type));
((MVMCArray *)result)->body.storage = carray;
}
return result;
}
signed char MVM_nativecall_unmarshal_char(MVMThreadContext *tc, MVMObject *value) {
return (signed char)MVM_repr_get_int(tc, value);
}
signed short MVM_nativecall_unmarshal_short(MVMThreadContext *tc, MVMObject *value) {
return (signed short)MVM_repr_get_int(tc, value);
}
signed int MVM_nativecall_unmarshal_int(MVMThreadContext *tc, MVMObject *value) {
return (signed int)MVM_repr_get_int(tc, value);
}
signed long MVM_nativecall_unmarshal_long(MVMThreadContext *tc, MVMObject *value) {
return (signed long)MVM_repr_get_int(tc, value);
}
signed long long MVM_nativecall_unmarshal_longlong(MVMThreadContext *tc, MVMObject *value) {
return (signed long long)MVM_repr_get_int(tc, value);
}
unsigned char MVM_nativecall_unmarshal_uchar(MVMThreadContext *tc, MVMObject *value) {
return (unsigned char)MVM_repr_get_int(tc, value);
}
unsigned short MVM_nativecall_unmarshal_ushort(MVMThreadContext *tc, MVMObject *value) {
return (unsigned short)MVM_repr_get_int(tc, value);
}
unsigned int MVM_nativecall_unmarshal_uint(MVMThreadContext *tc, MVMObject *value) {
return (unsigned int)MVM_repr_get_int(tc, value);
}
unsigned long MVM_nativecall_unmarshal_ulong(MVMThreadContext *tc, MVMObject *value) {
return (unsigned long)MVM_repr_get_int(tc, value);
}
unsigned long long MVM_nativecall_unmarshal_ulonglong(MVMThreadContext *tc, MVMObject *value) {
return (unsigned long long)MVM_repr_get_int(tc, value);
}
float MVM_nativecall_unmarshal_float(MVMThreadContext *tc, MVMObject *value) {
return (float)MVM_repr_get_num(tc, value);
}
double MVM_nativecall_unmarshal_double(MVMThreadContext *tc, MVMObject *value) {
return (double)MVM_repr_get_num(tc, value);
}
char * MVM_nativecall_unmarshal_string(MVMThreadContext *tc, MVMObject *value, MVMint16 type, MVMint16 *free) {
if (IS_CONCRETE(value)) {
MVMString *value_str = MVM_repr_get_str(tc, value);
/* Encode string. */
char *str;
switch (type & MVM_NATIVECALL_ARG_TYPE_MASK) {
case MVM_NATIVECALL_ARG_ASCIISTR:
str = MVM_string_ascii_encode_any(tc, value_str);
break;
case MVM_NATIVECALL_ARG_UTF16STR:
str = MVM_string_utf16_encode(tc, value_str, 0);
break;
default:
str = MVM_string_utf8_encode_C_string(tc, value_str);
}
/* Set whether to free it or not. */
if (free) {
if (REPR(value)->ID == MVM_REPR_ID_MVMCStr)
*free = 0; /* Manually managed. */
else if (free && type & MVM_NATIVECALL_ARG_FREE_STR_MASK)
*free = 1;
else
*free = 0;
}
return str;
}
else {
return NULL;
}
}
void * MVM_nativecall_unmarshal_cstruct(MVMThreadContext *tc, MVMObject *value) {
if (!IS_CONCRETE(value))
return NULL;
else if (REPR(value)->ID == MVM_REPR_ID_MVMCStruct)
return ((MVMCStruct *)value)->body.cstruct;
else
MVM_exception_throw_adhoc(tc,
"Native call expected return type with CStruct representation, but got a %s (%s)", REPR(value)->name, MVM_6model_get_debug_name(tc, value));
}
void * MVM_nativecall_unmarshal_cppstruct(MVMThreadContext *tc, MVMObject *value) {
if (!IS_CONCRETE(value))
return NULL;
else if (REPR(value)->ID == MVM_REPR_ID_MVMCPPStruct)
return ((MVMCPPStruct *)value)->body.cppstruct;
else
MVM_exception_throw_adhoc(tc,
"Native call expected return type with CPPStruct representation, but got a %s (%s)", REPR(value)->name, MVM_6model_get_debug_name(tc, value));
}
void * MVM_nativecall_unmarshal_cpointer(MVMThreadContext *tc, MVMObject *value) {
if (!IS_CONCRETE(value))
return NULL;
else if (REPR(value)->ID == MVM_REPR_ID_MVMCPointer)
return ((MVMCPointer *)value)->body.ptr;
else
MVM_exception_throw_adhoc(tc,
"Native call expected return type with CPointer representation, but got a %s (%s)", REPR(value)->name, MVM_6model_get_debug_name(tc, value));
}
void * MVM_nativecall_unmarshal_carray(MVMThreadContext *tc, MVMObject *value) {
if (!IS_CONCRETE(value))
return NULL;
else if (REPR(value)->ID == MVM_REPR_ID_MVMCArray)
return ((MVMCArray *)value)->body.storage;
else
MVM_exception_throw_adhoc(tc,
"Native call expected return type with CArray representation, but got a %s (%s)", REPR(value)->name, MVM_6model_get_debug_name(tc, value));
}
void * MVM_nativecall_unmarshal_vmarray(MVMThreadContext *tc, MVMObject *value) {
if (!IS_CONCRETE(value))
return NULL;
else if (REPR(value)->ID == MVM_REPR_ID_VMArray) {
MVMArrayBody *body = &((MVMArray *)value)->body;
MVMArrayREPRData *repr_data = (MVMArrayREPRData *)STABLE(value)->REPR_data;
size_t start_pos = body->start * repr_data->elem_size;
return ((char *)body->slots.any) + start_pos;
}
else
MVM_exception_throw_adhoc(tc,
"Native call expected object with Array representation, but got a %s (%s)", REPR(value)->name, MVM_6model_get_debug_name(tc, value));
}
void * MVM_nativecall_unmarshal_cunion(MVMThreadContext *tc, MVMObject *value) {
if (!IS_CONCRETE(value))
return NULL;
else if (REPR(value)->ID == MVM_REPR_ID_MVMCUnion)
return ((MVMCUnion *)value)->body.cunion;
else
MVM_exception_throw_adhoc(tc,
"Native call expected return type with CUnion representation, but got a %s (%s)", REPR(value)->name, MVM_6model_get_debug_name(tc, value));
}
#ifdef _WIN32
static const char *dlerror(void)
{
static char buf[32];
DWORD dw = GetLastError();
if (dw == 0)
return NULL;
snprintf(buf, 32, "error 0x%"PRIx32"", (MVMuint32)dw);
return buf;
}
#endif
void init_c_call_node(MVMThreadContext *tc, MVMSpeshGraph *sg, MVMJitNode *node, void *func_ptr, MVMint16 num_args, MVMJitCallArg *args) {
node->type = MVM_JIT_NODE_CALL_C;
node->u.call.func_ptr = func_ptr;
if (0 < num_args) {
node->u.call.args = MVM_spesh_alloc(tc, sg, num_args * sizeof(MVMJitCallArg));
memcpy(node->u.call.args, args, num_args * sizeof(MVMJitCallArg));
}
else {
node->u.call.args = NULL;
}
node->u.call.num_args = num_args;
node->u.call.has_vargs = 0;
node->u.call.rv_mode = MVM_JIT_RV_VOID;
node->u.call.rv_idx = -1;
}
void init_box_call_node(MVMThreadContext *tc, MVMSpeshGraph *sg, MVMJitNode *box_rv_node, void *func_ptr, MVMint16 restype, MVMint16 dst) {
MVMJitCallArg args[] = { { MVM_JIT_INTERP_VAR , { MVM_JIT_INTERP_TC } },
{ MVM_JIT_REG_DYNIDX, { 2 } },
{ MVM_JIT_SAVED_RV, { 0 } }};
init_c_call_node(tc, sg, box_rv_node, func_ptr, 3, args);
box_rv_node->next = NULL;
if (dst == -1) {
box_rv_node->u.call.rv_mode = MVM_JIT_RV_DYNIDX;
box_rv_node->u.call.rv_idx = 0;
}
else {
box_rv_node->u.call.args[1].type = MVM_JIT_REG_VAL;
box_rv_node->u.call.args[1].v.reg = restype;
box_rv_node->u.call.rv_mode = MVM_JIT_RV_PTR;
box_rv_node->u.call.rv_idx = dst;
}
}
MVMJitGraph *MVM_nativecall_jit_graph_for_caller_code(
MVMThreadContext *tc,
MVMSpeshGraph *sg,
MVMNativeCallBody *body,
MVMint16 restype,
MVMint16 dst,
MVMSpeshIns **arg_ins
) {
MVMJitGraph *jg = MVM_spesh_alloc(tc, sg, sizeof(MVMJitGraph)); /* will actually calloc */
MVMJitNode *block_gc_node = MVM_spesh_alloc(tc, sg, sizeof(MVMJitNode));
MVMJitNode *unblock_gc_node = MVM_spesh_alloc(tc, sg, sizeof(MVMJitNode));
MVMJitNode *call_node = MVM_spesh_alloc(tc, sg, sizeof(MVMJitNode));
MVMJitNode *save_rv_node = MVM_spesh_alloc(tc, sg, sizeof(MVMJitNode));
MVMJitNode *box_rv_node = MVM_spesh_alloc(tc, sg, sizeof(MVMJitNode));
MVMJitCode *jitcode = NULL;
MVMJitCallArg block_gc_args[] = { { MVM_JIT_INTERP_VAR , { MVM_JIT_INTERP_TC } } };
jg->sg = sg;
jg->first_node = block_gc_node;
save_rv_node->type = MVM_JIT_NODE_SAVE_RV;
save_rv_node->u.stack.slot = 0;
save_rv_node->next = unblock_gc_node;
init_c_call_node(tc, sg, block_gc_node, &MVM_gc_mark_thread_blocked, 1, block_gc_args);
block_gc_node->next = call_node;
init_c_call_node(tc, sg, unblock_gc_node, &MVM_gc_mark_thread_unblocked, 1, block_gc_args);
init_c_call_node(tc, sg, call_node, body->entry_point, 0, NULL); /* we handle args manually */
call_node->next = save_rv_node;
call_node->u.call.num_args = body->num_args;
jg->last_node = unblock_gc_node->next = box_rv_node;
if (0 < body->num_args) {
MVMuint16 i = 0, str_arg_count = 0;
call_node->u.call.args = MVM_spesh_alloc(tc, sg, body->num_args * sizeof(MVMJitCallArg));
for (i = 0; i < body->num_args; i++) {
if ((body->arg_types[i] & MVM_NATIVECALL_ARG_TYPE_MASK) == MVM_NATIVECALL_ARG_UTF8STR) {
MVMJitNode *unbox_str_node;
MVMJitNode *save_str_rv_node;
MVMJitNode *free_str_node;
if (7 < ++str_arg_count) /* only got 7 empty slots in the stack scratch space */
goto fail;
save_str_rv_node = MVM_spesh_alloc(tc, sg, sizeof(MVMJitNode));
save_str_rv_node->type = MVM_JIT_NODE_SAVE_RV;
save_str_rv_node->u.stack.slot = str_arg_count;
save_str_rv_node->next = jg->first_node;
unbox_str_node = MVM_spesh_alloc(tc, sg, sizeof(MVMJitNode));
{
MVMJitCallArg unbox_str_args[] = {
{ MVM_JIT_INTERP_VAR , { MVM_JIT_INTERP_TC } },
{
dst == -1 ? MVM_JIT_ARG_I64 : MVM_JIT_PARAM_I64 ,
{ dst == -1 ? i : arg_ins[i]->operands[1].reg.orig }
}
};
init_c_call_node(tc, sg, unbox_str_node, &MVM_string_utf8_maybe_encode_C_string, 2, unbox_str_args);
}
unbox_str_node->next = save_str_rv_node;
jg->first_node = unbox_str_node;
call_node->u.call.args[i].type = MVM_JIT_SAVED_RV;
call_node->u.call.args[i].v.lit_i64 = str_arg_count;
if ((body->arg_types[i] & MVM_NATIVECALL_ARG_FREE_STR_MASK) != 0) {
MVMJitCallArg free_str_args[] = {
{ MVM_JIT_SAVED_RV , { str_arg_count } }
};
free_str_node = MVM_spesh_alloc(tc, sg, sizeof(MVMJitNode));
init_c_call_node(tc, sg, free_str_node, &MVM_free, 1, free_str_args);
free_str_node->next = unblock_gc_node->next;
unblock_gc_node->next = free_str_node;
}
}
}
for (i = 0; i < body->num_args; i++) {
MVMJitArgType arg_type;
int is_rw = ((body->arg_types[i] & MVM_NATIVECALL_ARG_RW_MASK) == MVM_NATIVECALL_ARG_RW);
switch (body->arg_types[i] & MVM_NATIVECALL_ARG_TYPE_MASK) {
case MVM_NATIVECALL_ARG_CHAR:
case MVM_NATIVECALL_ARG_UCHAR:
case MVM_NATIVECALL_ARG_SHORT:
case MVM_NATIVECALL_ARG_USHORT:
case MVM_NATIVECALL_ARG_INT:
case MVM_NATIVECALL_ARG_UINT:
case MVM_NATIVECALL_ARG_LONG:
case MVM_NATIVECALL_ARG_ULONG:
case MVM_NATIVECALL_ARG_LONGLONG:
case MVM_NATIVECALL_ARG_ULONGLONG:
arg_type = dst == -1
? is_rw ? MVM_JIT_ARG_I64_RW : MVM_JIT_ARG_I64
: is_rw ? MVM_JIT_PARAM_I64_RW : MVM_JIT_PARAM_I64;
break;
case MVM_NATIVECALL_ARG_CPOINTER:
if (is_rw) goto fail;
arg_type = dst == -1 ? MVM_JIT_ARG_PTR : MVM_JIT_PARAM_PTR;
break;
case MVM_NATIVECALL_ARG_CARRAY:
if (body->arg_types[i] & MVM_NATIVECALL_ARG_REFRESH_MASK) goto fail;
if (is_rw) goto fail;
arg_type = dst == -1 ? MVM_JIT_ARG_PTR : MVM_JIT_PARAM_PTR;
break;
case MVM_NATIVECALL_ARG_VMARRAY:
if (is_rw) goto fail;
arg_type = dst == -1 ? MVM_JIT_ARG_VMARRAY : MVM_JIT_PARAM_VMARRAY;
break;
case MVM_NATIVECALL_ARG_UTF8STR:
if (is_rw) goto fail;
continue; /* already handled */
default:
goto fail;
}
call_node->u.call.args[i].type = arg_type;
call_node->u.call.args[i].v.lit_i64 = dst == -1 ? i : arg_ins[i]->operands[1].reg.orig;
}
}
if (body->ret_type == MVM_NATIVECALL_ARG_CHAR
|| body->ret_type == MVM_NATIVECALL_ARG_UCHAR
|| body->ret_type == MVM_NATIVECALL_ARG_SHORT
|| body->ret_type == MVM_NATIVECALL_ARG_USHORT
|| body->ret_type == MVM_NATIVECALL_ARG_INT
|| body->ret_type == MVM_NATIVECALL_ARG_UINT
|| body->ret_type == MVM_NATIVECALL_ARG_LONG
|| body->ret_type == MVM_NATIVECALL_ARG_ULONG
|| body->ret_type == MVM_NATIVECALL_ARG_LONGLONG
|| body->ret_type == MVM_NATIVECALL_ARG_ULONGLONG
) {
call_node->next = save_rv_node;
jg->last_node = unblock_gc_node->next = box_rv_node;
init_box_call_node(tc, sg, box_rv_node, &MVM_nativecall_make_int, restype, dst);
}
else if (body->ret_type == MVM_NATIVECALL_ARG_CPOINTER) {
init_box_call_node(tc, sg, box_rv_node, &MVM_nativecall_make_cpointer, restype, dst);
}
else if (body->ret_type == MVM_NATIVECALL_ARG_UTF8STR) {
MVMJitCallArg args[] = { { MVM_JIT_INTERP_VAR , { MVM_JIT_INTERP_TC } },
{ MVM_JIT_REG_DYNIDX, { 2 } },
{ MVM_JIT_LITERAL, { MVM_NATIVECALL_ARG_UTF8STR } },
{ MVM_JIT_SAVED_RV, { 0 } }};
init_c_call_node(tc, sg, box_rv_node, &MVM_nativecall_make_str, 4, args);
box_rv_node->next = NULL;
if (dst == -1) {
box_rv_node->u.call.rv_mode = MVM_JIT_RV_DYNIDX;
box_rv_node->u.call.rv_idx = 0;
}
else {
box_rv_node->u.call.args[1].type = MVM_JIT_REG_VAL;
box_rv_node->u.call.args[1].v.reg = restype;
box_rv_node->u.call.rv_mode = MVM_JIT_RV_PTR;
box_rv_node->u.call.rv_idx = dst;
}
}
else if (body->ret_type == MVM_NATIVECALL_ARG_VOID) {
call_node->next = unblock_gc_node;
unblock_gc_node->next = NULL;
jg->last_node = unblock_gc_node;
}
else {
goto fail;
}
return jg;
fail:
return NULL;
}
MVMJitCode *create_caller_code(MVMThreadContext *tc, MVMNativeCallBody *body) {
MVMSpeshGraph *sg = MVM_calloc(1, sizeof(MVMSpeshGraph));
MVMJitGraph *jg = MVM_nativecall_jit_graph_for_caller_code(tc, sg, body, -1, -1, NULL);
MVMJitCode *jitcode;
if (jg != NULL) {
MVMJitNode *entry_label = MVM_spesh_alloc(tc, sg, sizeof(MVMJitNode));
entry_label->next = jg->first_node;
jg->first_node = entry_label;
jg->num_labels = 1;
entry_label->type = MVM_JIT_NODE_LABEL;
entry_label->u.label.name = 0;
jitcode = MVM_jit_compile_graph(tc, jg);
}
else {
jitcode = NULL;
}
MVM_spesh_graph_destroy(tc, sg);
return jitcode;
}
/* Builds up a native call site out of the supplied arguments. */
MVMint8 MVM_nativecall_build(MVMThreadContext *tc, MVMObject *site, MVMString *lib,
MVMString *sym, MVMString *conv, MVMObject *arg_info, MVMObject *ret_info) {
char *lib_name = MVM_string_utf8_c8_encode_C_string(tc, lib);
char *sym_name = MVM_string_utf8_c8_encode_C_string(tc, sym);
MVMint8 keep_sym_name = 0;
MVMint16 i;
unsigned int interval_id = MVM_telemetry_interval_start(tc, "building native call");
MVMObject *entry_point_o = (MVMObject *)MVM_repr_at_key_o(tc, ret_info,
tc->instance->str_consts.entry_point);
/* Initialize the object; grab native call part of its body. */
MVMNativeCallBody *body = MVM_nativecall_get_nc_body(tc, site);
/* Try to load the library. */
body->lib_name = lib_name;
body->lib_handle = MVM_nativecall_load_lib(lib_name[0] ? lib_name : NULL);
if (!body->lib_handle) {
char *waste[] = { lib_name, NULL };
MVM_free(sym_name);
MVM_telemetry_interval_stop(tc, interval_id, "error building native call");
MVM_exception_throw_adhoc_free(tc, waste, "Cannot locate native library '%s': %s", lib_name, dlerror());
}
/* Try to locate the symbol. */
if (entry_point_o) {
body->entry_point = MVM_nativecall_unmarshal_cpointer(tc, entry_point_o);
body->sym_name = sym_name;
keep_sym_name = 1;
}
if (!body->entry_point) {
body->entry_point = MVM_nativecall_find_sym(body->lib_handle, sym_name);
if (!body->entry_point) {
char *waste[] = { sym_name, lib_name, NULL };
MVM_telemetry_interval_stop(tc, interval_id, "error building native call");
MVM_exception_throw_adhoc_free(tc, waste, "Cannot locate symbol '%s' in native library '%s'",
sym_name, lib_name);
}
body->sym_name = sym_name;
keep_sym_name = 1;
}
MVM_telemetry_interval_annotate_dynamic((uintptr_t)body->entry_point, interval_id, body->sym_name);
if (keep_sym_name == 0) {
MVM_free(sym_name);
}
/* Set calling convention, if any. */
body->convention = MVM_nativecall_get_calling_convention(tc, conv);
/* Transform each of the args info structures into a flag. */
body->num_args = MVM_repr_elems(tc, arg_info);
body->arg_types = MVM_malloc(sizeof(MVMint16) * (body->num_args ? body->num_args : 1));
body->arg_info = MVM_malloc(sizeof(MVMObject *) * (body->num_args ? body->num_args : 1));
#ifdef HAVE_LIBFFI
body->ffi_arg_types = MVM_malloc(sizeof(ffi_type *) * (body->num_args ? body->num_args : 1));
#endif
for (i = 0; i < body->num_args; i++) {
MVMObject *info = MVM_repr_at_pos_o(tc, arg_info, i);
body->arg_types[i] = MVM_nativecall_get_arg_type(tc, info, 0);
#ifdef HAVE_LIBFFI
body->ffi_arg_types[i] = MVM_nativecall_get_ffi_type(tc, body->arg_types[i]);
#endif
if(body->arg_types[i] == MVM_NATIVECALL_ARG_CALLBACK) {
MVM_ASSIGN_REF(tc, &(site->header), body->arg_info[i],
MVM_repr_at_key_o(tc, info, tc->instance->str_consts.callback_args));
}
else {
body->arg_info[i] = NULL;
}
}
/* Transform return argument type info a flag. */
body->ret_type = MVM_nativecall_get_arg_type(tc, ret_info, 1);
#ifdef HAVE_LIBFFI
body->ffi_ret_type = MVM_nativecall_get_ffi_type(tc, body->ret_type);
#endif
if (tc->instance->jit_enabled) {
body->jitcode = create_caller_code(tc, body);
}
else
body->jitcode = NULL;
MVM_telemetry_interval_stop(tc, interval_id, "nativecall built");
return body->jitcode != NULL;
}
static MVMObject * nativecall_cast(MVMThreadContext *tc, MVMObject *target_spec, MVMObject *target_type, void *cpointer_body) {
MVMObject *result = NULL;
MVMROOT2(tc, target_spec, target_type, {
switch (REPR(target_type)->ID) {
case MVM_REPR_ID_P6opaque: {
const MVMStorageSpec *ss = REPR(target_spec)->get_storage_spec(tc, STABLE(target_spec));
if(ss->can_box & MVM_STORAGE_SPEC_CAN_BOX_INT) {
MVMint64 value = 0;
if (ss->is_unsigned)
switch(ss->bits) {
case 8:
value = *(MVMuint8 *)cpointer_body;
break;
case 16:
value = *(MVMuint16 *)cpointer_body;
break;
case 32:
value = *(MVMuint32 *)cpointer_body;
break;
case 64:
default:
value = *(MVMuint64 *)cpointer_body;
}
else
switch(ss->bits) {
case 8:
value = *(MVMint8 *)cpointer_body;
break;
case 16:
value = *(MVMint16 *)cpointer_body;
break;
case 32:
value = *(MVMint32 *)cpointer_body;
break;
case 64:
default:
value = *(MVMint64 *)cpointer_body;
}
result = MVM_nativecall_make_int(tc, target_type, value);
}
else if(ss->can_box & MVM_STORAGE_SPEC_CAN_BOX_NUM) {
MVMnum64 value;
switch(ss->bits) {
case 32:
value = *(MVMnum32 *)cpointer_body;
break;
case 64:
default:
value = *(MVMnum64 *)cpointer_body;
}
result = MVM_nativecall_make_num(tc, target_type, value);
}
else if(ss->can_box & MVM_STORAGE_SPEC_CAN_BOX_STR) {
result = MVM_nativecall_make_str(tc, target_type, MVM_NATIVECALL_ARG_UTF8STR,
(char *)cpointer_body);
}
else
MVM_exception_throw_adhoc(tc, "Internal error: unhandled target type");
break;
}
case MVM_REPR_ID_P6int: {
const MVMStorageSpec *ss = REPR(target_spec)->get_storage_spec(tc, STABLE(target_spec));
MVMint64 value;
if (ss->is_unsigned)
switch(ss->bits) {
case 8:
value = *(MVMuint8 *)cpointer_body;
break;
case 16:
value = *(MVMuint16 *)cpointer_body;
break;
case 32:
value = *(MVMuint32 *)cpointer_body;
break;
case 64:
default:
value = *(MVMuint64 *)cpointer_body;
}
else
switch(ss->bits) {
case 8:
value = *(MVMint8 *)cpointer_body;
break;
case 16:
value = *(MVMint16 *)cpointer_body;
break;
case 32:
value = *(MVMint32 *)cpointer_body;
break;
case 64:
default:
value = *(MVMint64 *)cpointer_body;
}
result = MVM_nativecall_make_int(tc, target_type, value);
break;
}
case MVM_REPR_ID_P6num: {
const MVMStorageSpec *ss = REPR(target_spec)->get_storage_spec(tc, STABLE(target_spec));
MVMnum64 value;
switch(ss->bits) {
case 32:
value = *(MVMnum32 *)cpointer_body;
break;
case 64:
default:
value = *(MVMnum64 *)cpointer_body;
}
result = MVM_nativecall_make_num(tc, target_type, value);
break;
}
case MVM_REPR_ID_MVMCStr:
case MVM_REPR_ID_P6str:
result = MVM_nativecall_make_str(tc, target_type, MVM_NATIVECALL_ARG_UTF8STR,
(char *)cpointer_body);
break;
case MVM_REPR_ID_MVMCStruct:
result = MVM_nativecall_make_cstruct(tc, target_type, (void *)cpointer_body);
break;
case MVM_REPR_ID_MVMCUnion:
result = MVM_nativecall_make_cunion(tc, target_type, (void *)cpointer_body);
break;
case MVM_REPR_ID_MVMCPointer:
result = MVM_nativecall_make_cpointer(tc, target_type, (void *)cpointer_body);
break;
case MVM_REPR_ID_MVMCArray: {
result = MVM_nativecall_make_carray(tc, target_type, (void *)cpointer_body);
break;
}
default:
MVM_exception_throw_adhoc(tc, "Internal error: unhandled target type");
}
});
return result;
}
MVMObject * MVM_nativecall_global(MVMThreadContext *tc, MVMString *lib, MVMString *sym, MVMObject *target_spec, MVMObject *target_type) {
char *lib_name = MVM_string_utf8_c8_encode_C_string(tc, lib);
char *sym_name = MVM_string_utf8_c8_encode_C_string(tc, sym);
DLLib *lib_handle;
void *entry_point;
MVMObject *ret = NULL;
/* Try to load the library. */
lib_handle = MVM_nativecall_load_lib(lib_name[0] ? lib_name : NULL);
if (!lib_handle) {
char *waste[] = { lib_name, NULL };
MVM_free(sym_name);
MVM_exception_throw_adhoc_free(tc, waste, "Cannot locate native library '%s': %s", lib_name, dlerror());
}
/* Try to locate the symbol. */
entry_point = MVM_nativecall_find_sym(lib_handle, sym_name);
if (!entry_point) {
char *waste[] = { sym_name, lib_name, NULL };
MVM_exception_throw_adhoc_free(tc, waste, "Cannot locate symbol '%s' in native library '%s'",
sym_name, lib_name);
}
MVM_free(sym_name);
MVM_free(lib_name);
if (REPR(target_type)->ID == MVM_REPR_ID_MVMCStr
|| REPR(target_type)->ID == MVM_REPR_ID_P6str
|| (REPR(target_type)->ID == MVM_REPR_ID_P6opaque
&& REPR(target_spec)->get_storage_spec(tc, STABLE(target_spec))->can_box & MVM_STORAGE_SPEC_CAN_BOX_STR)) {
entry_point = *(void **)entry_point;
}
ret = nativecall_cast(tc, target_spec, target_type, entry_point);
MVM_nativecall_free_lib(lib_handle);
return ret;
}
MVMObject * MVM_nativecall_cast(MVMThreadContext *tc, MVMObject *target_spec, MVMObject *target_type, MVMObject *source) {
void *data_body;
if (!source)
return target_type;
if (REPR(source)->ID == MVM_REPR_ID_MVMCStruct)
data_body = MVM_nativecall_unmarshal_cstruct(tc, source);
else if (REPR(source)->ID == MVM_REPR_ID_MVMCPPStruct)
data_body = MVM_nativecall_unmarshal_cppstruct(tc, source);
else if (REPR(source)->ID == MVM_REPR_ID_MVMCUnion)
data_body = MVM_nativecall_unmarshal_cunion(tc, source);
else if (REPR(source)->ID == MVM_REPR_ID_MVMCPointer)
data_body = MVM_nativecall_unmarshal_cpointer(tc, source);
else if (REPR(source)->ID == MVM_REPR_ID_MVMCArray)
data_body = MVM_nativecall_unmarshal_carray(tc, source);
else if (REPR(source)->ID == MVM_REPR_ID_VMArray)
data_body = MVM_nativecall_unmarshal_vmarray(tc, source);
else
MVM_exception_throw_adhoc(tc,
"Native call expected return type with CPointer, CStruct, CArray, or VMArray representation, but got a %s (%s)", REPR(source)->name, MVM_6model_get_debug_name(tc, source));
return nativecall_cast(tc, target_spec, target_type, data_body);
}
MVMint64 MVM_nativecall_sizeof(MVMThreadContext *tc, MVMObject *obj) {
if (REPR(obj)->ID == MVM_REPR_ID_MVMCStruct)
return ((MVMCStructREPRData *)STABLE(obj)->REPR_data)->struct_size;
else if (REPR(obj)->ID == MVM_REPR_ID_MVMCPPStruct)
return ((MVMCPPStructREPRData *)STABLE(obj)->REPR_data)->struct_size;
else if (REPR(obj)->ID == MVM_REPR_ID_MVMCUnion)
return ((MVMCUnionREPRData *)STABLE(obj)->REPR_data)->struct_size;
else if (REPR(obj)->ID == MVM_REPR_ID_P6int)
return ((MVMP6intREPRData *)STABLE(obj)->REPR_data)->bits / 8;
else if (REPR(obj)->ID == MVM_REPR_ID_P6num)
return ((MVMP6numREPRData *)STABLE(obj)->REPR_data)->bits / 8;
else if (REPR(obj)->ID == MVM_REPR_ID_MVMCPointer
|| REPR(obj)->ID == MVM_REPR_ID_MVMCArray
|| REPR(obj)->ID == MVM_REPR_ID_MVMCStr
|| REPR(obj)->ID == MVM_REPR_ID_P6str)
return sizeof(void *);
else
MVM_exception_throw_adhoc(tc,
"NativeCall op sizeof expected type with CPointer, CStruct, CArray, P6int or P6num representation, but got a %s (%s)",
REPR(obj)->name, MVM_6model_get_debug_name(tc, obj));
}
/* Write-barriers a dyncall object so that delayed changes to the C-side of
* objects are propagated to the HLL side. All CArray and CStruct arguments to
* C functions are write-barriered automatically, so this should be necessary
* only in the rarest of cases. */
void MVM_nativecall_refresh(MVMThreadContext *tc, MVMObject *cthingy) {
if (!IS_CONCRETE(cthingy))
return;
if (REPR(cthingy)->ID == MVM_REPR_ID_MVMCArray) {
MVMCArrayBody *body = (MVMCArrayBody *)OBJECT_BODY(cthingy);
MVMCArrayREPRData *repr_data = (MVMCArrayREPRData *)STABLE(cthingy)->REPR_data;
void **storage = (void **) body->storage;
MVMint64 i;
/* No need to check for numbers. They're stored directly in the array. */
if (repr_data->elem_kind == MVM_CARRAY_ELEM_KIND_NUMERIC)
return;
for (i = 0; i < body->elems; i++) {
void *cptr; /* The pointer in the C storage. */
void *objptr; /* The pointer in the object representing the C object. */
/* Ignore elements where we haven't generated an object. */
if (!body->child_objs[i])
continue;
cptr = storage[i];
if (IS_CONCRETE(body->child_objs[i])) {
switch (repr_data->elem_kind) {
case MVM_CARRAY_ELEM_KIND_CARRAY:
objptr = ((MVMCArrayBody *)OBJECT_BODY(body->child_objs[i]))->storage;
break;
case MVM_CARRAY_ELEM_KIND_CPOINTER:
objptr = ((MVMCPointerBody *)OBJECT_BODY(body->child_objs[i]))->ptr;
break;
case MVM_CARRAY_ELEM_KIND_CSTRUCT:
objptr = ((MVMCStructBody *)OBJECT_BODY(body->child_objs[i]))->cstruct;
break;
case MVM_CARRAY_ELEM_KIND_CUNION:
objptr = ((MVMCUnionBody *)OBJECT_BODY(body->child_objs[i]))->cunion;
break;
case MVM_CARRAY_ELEM_KIND_STRING:
objptr = NULL; /* TODO */
break;
default:
MVM_exception_throw_adhoc(tc,
"Fatal error: bad elem_kind (%d) in CArray write barrier",
repr_data->elem_kind);
}
}
else {
objptr = NULL;
}
if (objptr != cptr)
body->child_objs[i] = NULL;
else