/
interp.c
6827 lines (6763 loc) · 297 KB
/
interp.c
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#include "moar.h"
#include "platform/time.h"
#include "platform/sys.h"
/* Macros for getting things from the bytecode stream. */
#if MVM_GC_DEBUG >= 2
MVM_STATIC_INLINE MVMuint16 check_reg(MVMThreadContext *tc, MVMRegister *reg_base, MVMuint16 idx) {
MVMFrame *f = tc->cur_frame;
MVMuint16 kind = f->spesh_cand && f->spesh_cand->body.local_types
? f->spesh_cand->body.local_types[idx]
: f->static_info->body.local_types[idx];
if (kind == MVM_reg_obj || kind == MVM_reg_str)
MVM_ASSERT_NOT_FROMSPACE(tc, reg_base[idx].o);
return idx;
}
/* The bytecode stream is OPs (16 bit numbers) followed by the (16 bit numbers) of the registers
* the OP needs (return register + argument registers. The pc will point to the first place after
* the current op, i.e. the first 16 bit register number. We add the requested number to that and
* use the result as index into the reg_base array which stores the frame's locals. */
#define GET_REG(pc, idx) reg_base[check_reg(tc, reg_base, *((MVMuint16 *)(pc + idx)))]
#else
#define GET_REG(pc, idx) reg_base[*((MVMuint16 *)(pc + idx))]
#endif
#if MVM_GC_DEBUG >= 2
MVM_STATIC_INLINE MVMuint16 check_lex(MVMThreadContext *tc, MVMFrame *f, MVMuint16 idx) {
MVMuint16 kind = f->spesh_cand && f->spesh_cand->body.lexical_types
? f->spesh_cand->body.lexical_types[idx]
: f->static_info->body.lexical_types[idx];
if (kind == MVM_reg_obj || kind == MVM_reg_str)
MVM_ASSERT_NOT_FROMSPACE(tc, f->env[idx].o);
return idx;
}
#define GET_LEX(pc, idx, f) f->env[check_lex(tc, f, *((MVMuint16 *)(pc + idx)))]
#else
#define GET_LEX(pc, idx, f) f->env[*((MVMuint16 *)(pc + idx))]
#endif
#define GET_I16(pc, idx) *((MVMint16 *)(pc + idx))
#define GET_UI16(pc, idx) *((MVMuint16 *)(pc + idx))
MVM_STATIC_INLINE MVMint32 GET_I32(const MVMuint8 *pc, MVMint32 idx) {
MVMint32 retval;
memcpy(&retval, pc + idx, sizeof(retval));
return retval;
}
MVM_STATIC_INLINE MVMuint32 GET_UI32(const MVMuint8 *pc, MVMint32 idx) {
MVMuint32 retval;
memcpy(&retval, pc + idx, sizeof(retval));
return retval;
}
#define NEXT_OP (op = *(MVMuint16 *)(cur_op), cur_op += 2, op)
#if MVM_CGOTO
#define DISPATCH(op)
#define OP(name) OP_ ## name
#define NEXT *LABELS[NEXT_OP]
#else
#define DISPATCH(op) switch (op)
#define OP(name) case MVM_OP_ ## name
#define NEXT runloop
#endif
#define CHECK_CONC(obj) do { if (MVM_UNLIKELY(IS_CONCRETE((MVMObject *)(obj)) == 0)) { error_concreteness(tc, (MVMObject *)(obj), op); } } while (0)
typedef union double_memory
{
uint64_t u;
double d;
} double_memory;
typedef union float_memory
{
uint32_t u;
float f;
} float_memory;
#define CAST_N32(u) (((float_memory)(u)).d)
static void error_concreteness(MVMThreadContext *tc, MVMObject *object, MVMuint16 op) {
MVM_exception_throw_adhoc(tc, "%s requires a concrete object (got a %s type object instead)",
MVM_op_get_op(op)->name, MVM_6model_get_debug_name(tc, object));
}
static int tracing_enabled = 0;
/* Various spesh ops incorporate a fastcreate, so they can decide to not do
* the allocation and serve a result from a cache instead. This factors the
* fastcreate logic out. */
static MVMObject * fastcreate(MVMThreadContext *tc, MVMuint8 *cur_op) {
/* Assume we're in normal code, so doing a nursery allocation.
* Also, that there is no initialize. */
MVMuint16 size = GET_UI16(cur_op, 2);
MVMObject *obj = MVM_gc_allocate_nursery(tc, size);
#if MVM_GC_DEBUG
if (tc->allocate_in_gen2)
MVM_panic(1, "Illegal use of a nursery-allocating spesh op when gen2 allocation flag set");
#endif
obj->st = (MVMSTable *)tc->cur_frame->effective_spesh_slots[GET_UI16(cur_op, 4)];
obj->header.size = size;
obj->header.owner = tc->thread_id;
return obj;
}
static MVMuint64 switch_endian(MVMuint64 val, unsigned char size) {
if (size == 1) {
return val;
}
else if (size == 2) {
return (MVMuint16)((val & 0x00FF) << 8) | ((val >> 8 ) & 0x00FF);
}
else if (size == 4) {
val = (MVMuint32)((val << 8) & 0xFF00FF00) | ((val >> 8) & 0xFF00FF );
return (MVMuint32)((val << 16)) | (val >> 16);
}
else if (size == 8) {
val = ((val << 8) & 0xFF00FF00FF00FF00ULL ) | ((val >> 8) & 0x00FF00FF00FF00FFULL );
val = ((val << 16) & 0xFFFF0000FFFF0000ULL ) | ((val >> 16) & 0x0000FFFF0000FFFFULL );
return (val << 32) | (val >> 32);
}
MVM_panic(1, "Invalid size (%u) when attempting to switch endianness of %"PRIu64"\n", size, val);
}
/* This is the interpreter run loop. We have one of these per thread. */
void MVM_interp_run(MVMThreadContext *tc, void (*initial_invoke)(MVMThreadContext *, void *), void *invoke_data, MVMRunloopState *outer_runloop) {
#if MVM_CGOTO
#include "oplabels.h"
#endif
/* Points to the place in the bytecode right after the current opcode. */
/* See the NEXT_OP macro for making sense of this */
MVMuint8 *cur_op = NULL;
/* The current frame's bytecode start. */
MVMuint8 *bytecode_start = NULL;
/* Points to the base of the current register set for the frame we
* are presently in. */
MVMRegister *reg_base = NULL;
/* Points to the current compilation unit. */
MVMCompUnit *cu = NULL;
/* The current call site we're constructing. */
MVMCallsite *cur_callsite = NULL;
/* Stash addresses of current op, register base and SC deref base
* in the TC; this will be used by anything that needs to switch
* the current place we're interpreting. */
tc->interp_cur_op = &cur_op;
tc->interp_bytecode_start = &bytecode_start;
tc->interp_reg_base = ®_base;
tc->interp_cu = &cu;
/* With everything set up, do the initial invocation (exactly what this does
* varies depending on if this is starting a new thread or is the top-level
* program entry point). */
initial_invoke(tc, invoke_data);
/* initial_invoke is supposed to have setup interpreter state; if it hasn't,
* it wasn't a 'real' thread. */
if (!cur_op)
goto return_label;
/* Set jump point, for if we arrive back in the interpreter from an
* exception thrown from C code. */
setjmp(tc->interp_jump);
#if !MVM_CGOTO
/* Enter runloop. */
runloop:
#endif
{
MVMuint16 op;
#if MVM_TRACING
if (tracing_enabled) {
char *trace_line;
trace_line = MVM_exception_backtrace_line(tc, tc->cur_frame, 0, cur_op);
fprintf(stderr, "Op %d%s\n", (int)*((MVMuint16 *)cur_op), trace_line);
/* slow tracing is slow. Feel free to speed it. */
MVM_free(trace_line);
}
#endif
/* The ops should be in the same order here as in the oplist file, so
* the compiler can can optimise the switch properly. To check if they
* are in the same order as the oplist use the
* tools/compare-oplist-interp-order.sh helper script. */
DISPATCH(NEXT_OP) {
OP(no_op):
goto NEXT;
OP(const_i8):
OP(const_i16):
OP(const_i32):
MVM_exception_throw_adhoc(tc, "const_iX NYI");
OP(const_i64):
GET_REG(cur_op, 0).i64 = MVM_BC_get_I64(cur_op, 2);
cur_op += 10;
goto NEXT;
OP(const_n32):
MVM_exception_throw_adhoc(tc, "const_n32 NYI");
OP(const_n64):
GET_REG(cur_op, 0).n64 = MVM_BC_get_N64(cur_op, 2);
cur_op += 10;
goto NEXT;
OP(const_s):
GET_REG(cur_op, 0).s = MVM_cu_string(tc, cu, GET_UI32(cur_op, 2));
cur_op += 6;
goto NEXT;
OP(set):
GET_REG(cur_op, 0) = GET_REG(cur_op, 2);
cur_op += 4;
goto NEXT;
OP(extend_u8):
GET_REG(cur_op, 0).u64 = (MVMuint64)GET_REG(cur_op, 2).u8;
cur_op += 4;
goto NEXT;
OP(extend_u16):
GET_REG(cur_op, 0).u64 = (MVMuint64)GET_REG(cur_op, 2).u16;
cur_op += 4;
goto NEXT;
OP(extend_u32):
GET_REG(cur_op, 0).u64 = (MVMuint64)GET_REG(cur_op, 2).u32;
cur_op += 4;
goto NEXT;
OP(extend_i8):
GET_REG(cur_op, 0).i64 = (MVMint64)GET_REG(cur_op, 2).i8;
cur_op += 4;
goto NEXT;
OP(extend_i16):
GET_REG(cur_op, 0).i64 = (MVMint64)GET_REG(cur_op, 2).i16;
cur_op += 4;
goto NEXT;
OP(extend_i32):
GET_REG(cur_op, 0).i64 = (MVMint64)GET_REG(cur_op, 2).i32;
cur_op += 4;
goto NEXT;
OP(trunc_u8):
GET_REG(cur_op, 0).u8 = (MVMuint8)GET_REG(cur_op, 2).u64;
cur_op += 4;
goto NEXT;
OP(trunc_u16):
GET_REG(cur_op, 0).u16 = (MVMuint16)GET_REG(cur_op, 2).u64;
cur_op += 4;
goto NEXT;
OP(trunc_u32):
GET_REG(cur_op, 0).u32 = (MVMuint32)GET_REG(cur_op, 2).u64;
cur_op += 4;
goto NEXT;
OP(trunc_i8):
GET_REG(cur_op, 0).i8 = (MVMint8)GET_REG(cur_op, 2).i64;
cur_op += 4;
goto NEXT;
OP(trunc_i16):
GET_REG(cur_op, 0).i16 = (MVMint16)GET_REG(cur_op, 2).i64;
cur_op += 4;
goto NEXT;
OP(trunc_i32):
GET_REG(cur_op, 0).i32 = (MVMint32)GET_REG(cur_op, 2).i64;
cur_op += 4;
goto NEXT;
OP(extend_n32):
GET_REG(cur_op, 0).n64 = (MVMnum64)GET_REG(cur_op, 2).n32;
cur_op += 4;
goto NEXT;
OP(trunc_n32):
GET_REG(cur_op, 0).n32 = (MVMnum32)GET_REG(cur_op, 2).n64;
cur_op += 4;
goto NEXT;
OP(goto):
cur_op = bytecode_start + GET_UI32(cur_op, 0);
GC_SYNC_POINT(tc);
goto NEXT;
OP(if_i):
if (GET_REG(cur_op, 0).i64)
cur_op = bytecode_start + GET_UI32(cur_op, 2);
else
cur_op += 6;
GC_SYNC_POINT(tc);
goto NEXT;
OP(unless_i):
if (GET_REG(cur_op, 0).i64)
cur_op += 6;
else
cur_op = bytecode_start + GET_UI32(cur_op, 2);
GC_SYNC_POINT(tc);
goto NEXT;
OP(if_n):
if (GET_REG(cur_op, 0).n64 != 0.0)
cur_op = bytecode_start + GET_UI32(cur_op, 2);
else
cur_op += 6;
GC_SYNC_POINT(tc);
goto NEXT;
OP(unless_n):
if (GET_REG(cur_op, 0).n64 != 0.0)
cur_op += 6;
else
cur_op = bytecode_start + GET_UI32(cur_op, 2);
GC_SYNC_POINT(tc);
goto NEXT;
OP(if_s): {
MVMString *str = GET_REG(cur_op, 0).s;
if (!str || MVM_string_graphs(tc, str) == 0)
cur_op += 6;
else
cur_op = bytecode_start + GET_UI32(cur_op, 2);
GC_SYNC_POINT(tc);
goto NEXT;
}
OP(unless_s): {
MVMString *str = GET_REG(cur_op, 0).s;
if (!str || MVM_string_graphs(tc, str) == 0)
cur_op = bytecode_start + GET_UI32(cur_op, 2);
else
cur_op += 6;
GC_SYNC_POINT(tc);
goto NEXT;
}
OP(if_s0): {
MVMString *str = GET_REG(cur_op, 0).s;
if (!MVM_coerce_istrue_s(tc, str))
cur_op += 6;
else
cur_op = bytecode_start + GET_UI32(cur_op, 2);
GC_SYNC_POINT(tc);
goto NEXT;
}
OP(unless_s0): {
MVMString *str = GET_REG(cur_op, 0).s;
if (!MVM_coerce_istrue_s(tc, str))
cur_op = bytecode_start + GET_UI32(cur_op, 2);
else
cur_op += 6;
GC_SYNC_POINT(tc);
goto NEXT;
}
OP(if_o):
GC_SYNC_POINT(tc);
MVM_coerce_istrue(tc, GET_REG(cur_op, 0).o, NULL,
bytecode_start + GET_UI32(cur_op, 2),
cur_op + 6,
0);
goto NEXT;
OP(unless_o):
GC_SYNC_POINT(tc);
MVM_coerce_istrue(tc, GET_REG(cur_op, 0).o, NULL,
bytecode_start + GET_UI32(cur_op, 2),
cur_op + 6,
1);
goto NEXT;
OP(jumplist): {
MVMint64 num_labels = MVM_BC_get_I64(cur_op, 0);
MVMint64 input = GET_REG(cur_op, 8).i64;
cur_op += 10;
/* the goto ops are guaranteed valid/existent by validation.c */
if (input < 0 || input >= num_labels) { /* implicitly covers num_labels == 0 */
/* skip the entire goto list block */
cur_op += (6 /* size of each goto op */) * num_labels;
}
else { /* delve directly into the selected goto op */
cur_op = bytecode_start + GET_UI32(cur_op,
input * (6 /* size of each goto op */)
+ (2 /* size of the goto instruction itself */));
}
GC_SYNC_POINT(tc);
goto NEXT;
}
OP(getlex): {
MVMFrame *f = tc->cur_frame;
MVMuint16 idx = GET_UI16(cur_op, 2);
MVMuint16 outers = GET_UI16(cur_op, 4);
MVMuint16 *lexical_types;
while (outers) {
if (!f->outer)
MVM_exception_throw_adhoc(tc, "getlex: outer index out of range");
f = f->outer;
outers--;
}
lexical_types = f->spesh_cand && f->spesh_cand->body.lexical_types
? f->spesh_cand->body.lexical_types
: f->static_info->body.lexical_types;
if (lexical_types[idx] == MVM_reg_obj) {
MVMRegister found = GET_LEX(cur_op, 2, f);
MVMObject *value = found.o == NULL
? MVM_frame_vivify_lexical(tc, f, idx)
: found.o;
GET_REG(cur_op, 0).o = value;
if (MVM_spesh_log_is_logging(tc))
MVM_spesh_log_type(tc, value);
}
else {
GET_REG(cur_op, 0) = GET_LEX(cur_op, 2, f);
}
cur_op += 6;
goto NEXT;
}
OP(bindlex): {
MVMFrame *f = tc->cur_frame;
MVMuint16 outers = GET_UI16(cur_op, 2);
MVMuint16 kind = f->spesh_cand && f->spesh_cand->body.local_types
? f->spesh_cand->body.local_types[GET_UI16(cur_op, 4)]
: f->static_info->body.local_types[GET_UI16(cur_op, 4)];
while (outers) {
if (!f->outer)
MVM_exception_throw_adhoc(tc, "bindlex: outer index out of range");
f = f->outer;
outers--;
}
if (kind == MVM_reg_obj || kind == MVM_reg_str) {
#if MVM_GC_DEBUG
MVM_ASSERT_NOT_FROMSPACE(tc, GET_REG(cur_op, 4).o);
#endif
MVM_ASSIGN_REF(tc, &(f->header), GET_LEX(cur_op, 0, f).o,
GET_REG(cur_op, 4).o);
}
else {
GET_LEX(cur_op, 0, f) = GET_REG(cur_op, 4);
}
cur_op += 6;
goto NEXT;
}
OP(getlex_ni):
GET_REG(cur_op, 0).i64 = MVM_frame_find_lexical_by_name(tc,
MVM_cu_string(tc, cu, GET_UI32(cur_op, 2)), MVM_reg_int64)->i64;
cur_op += 6;
goto NEXT;
OP(getlex_nn):
GET_REG(cur_op, 0).n64 = MVM_frame_find_lexical_by_name(tc,
MVM_cu_string(tc, cu, GET_UI32(cur_op, 2)), MVM_reg_num64)->n64;
cur_op += 6;
goto NEXT;
OP(getlex_ns):
GET_REG(cur_op, 0).s = MVM_frame_find_lexical_by_name(tc,
MVM_cu_string(tc, cu, GET_UI32(cur_op, 2)), MVM_reg_str)->s;
cur_op += 6;
goto NEXT;
OP(getlex_no): {
MVMRegister *found = MVM_frame_find_lexical_by_name(tc,
MVM_cu_string(tc, cu, GET_UI32(cur_op, 2)), MVM_reg_obj);
if (found) {
GET_REG(cur_op, 0).o = found->o;
if (MVM_spesh_log_is_logging(tc))
MVM_spesh_log_type(tc, found->o);
}
else {
GET_REG(cur_op, 0).o = tc->instance->VMNull;
}
cur_op += 6;
goto NEXT;
}
OP(bindlex_ni):
MVM_frame_bind_lexical_by_name(tc,
MVM_cu_string(tc, cu, GET_UI32(cur_op, 0)),
MVM_reg_int64, GET_REG(cur_op, 4));
cur_op += 6;
goto NEXT;
OP(bindlex_nn):
MVM_frame_bind_lexical_by_name(tc,
MVM_cu_string(tc, cu, GET_UI32(cur_op, 0)),
MVM_reg_num64, GET_REG(cur_op, 4));
cur_op += 6;
goto NEXT;
OP(bindlex_ns):
MVM_frame_bind_lexical_by_name(tc,
MVM_cu_string(tc, cu, GET_UI32(cur_op, 0)),
MVM_reg_str, GET_REG(cur_op, 4));
cur_op += 6;
goto NEXT;
OP(bindlex_no):
MVM_frame_bind_lexical_by_name(tc,
MVM_cu_string(tc, cu, GET_UI32(cur_op, 0)),
MVM_reg_obj, GET_REG(cur_op, 4));
cur_op += 6;
goto NEXT;
OP(getlex_ng):
OP(bindlex_ng):
MVM_exception_throw_adhoc(tc, "get/bindlex_ng NYI");
OP(getdynlex): {
if (MVM_UNLIKELY(tc->cur_frame->caller == 0)) {
MVM_exception_throw_adhoc(tc, "cannot call getdynlex without a caller frame");
}
GET_REG(cur_op, 0).o = MVM_frame_getdynlex(tc, GET_REG(cur_op, 2).s,
tc->cur_frame->caller);
cur_op += 4;
goto NEXT;
}
OP(binddynlex): {
MVM_frame_binddynlex(tc, GET_REG(cur_op, 0).s, GET_REG(cur_op, 2).o,
tc->cur_frame->caller);
cur_op += 4;
goto NEXT;
}
OP(setlexvalue): {
MVMObject *code = GET_REG(cur_op, 0).o;
MVMString *name = MVM_cu_string(tc, cu, GET_UI32(cur_op, 2));
MVMObject *val = GET_REG(cur_op, 6).o;
MVMint16 flag = GET_I16(cur_op, 8);
if (flag < 0 || flag > 2)
MVM_exception_throw_adhoc(tc, "setlexvalue provided with invalid flag (%"PRId16")", flag);
if (IS_CONCRETE(code) && REPR(code)->ID == MVM_REPR_ID_MVMCode) {
MVMStaticFrame *sf = ((MVMCode *)code)->body.sf;
MVMuint8 found = 0;
if (!sf->body.fully_deserialized)
MVM_bytecode_finish_frame(tc, sf->body.cu, sf, 0);
if (sf->body.num_lexicals) {
MVMuint32 idx = MVM_get_lexical_by_name(tc, sf, name);
if (idx != MVM_INDEX_HASH_NOT_FOUND
&& sf->body.lexical_types[idx] == MVM_reg_obj) {
MVM_ASSIGN_REF(tc, &(sf->common.header), sf->body.static_env[idx].o, val);
sf->body.static_env_flags[idx] = (MVMuint8)flag;
found = 1;
}
}
if (!found) {
char *c_name = MVM_string_utf8_encode_C_string(tc, name);
char *waste[] = { c_name, NULL };
MVM_exception_throw_adhoc_free(tc, waste, "setstaticlex given invalid lexical name '%s'", c_name);
}
}
else {
MVM_exception_throw_adhoc(tc, "setstaticlex needs a code ref");
}
cur_op += 10;
goto NEXT;
}
OP(lexprimspec): {
MVMObject *ctx = GET_REG(cur_op, 2).o;
MVMString *name = GET_REG(cur_op, 4).s;
if (REPR(ctx)->ID != MVM_REPR_ID_MVMContext || !IS_CONCRETE(ctx))
MVM_exception_throw_adhoc(tc, "lexprimspec needs a context");
GET_REG(cur_op, 0).i64 = MVM_context_lexical_primspec(tc,
(MVMContext *)ctx, name);
cur_op += 6;
goto NEXT;
}
OP(return_i):
MVM_args_set_result_int(tc, GET_REG(cur_op, 0).i64,
MVM_RETURN_CALLER_FRAME);
if (MVM_frame_try_return(tc) == 0)
goto return_label;
goto NEXT;
OP(return_n):
MVM_args_set_result_num(tc, GET_REG(cur_op, 0).n64,
MVM_RETURN_CALLER_FRAME);
if (MVM_frame_try_return(tc) == 0)
goto return_label;
goto NEXT;
OP(return_s):
MVM_args_set_result_str(tc, GET_REG(cur_op, 0).s,
MVM_RETURN_CALLER_FRAME);
if (MVM_frame_try_return(tc) == 0)
goto return_label;
goto NEXT;
OP(return_o): {
MVMObject *value = GET_REG(cur_op, 0).o;
MVM_args_set_result_obj(tc, value, MVM_RETURN_CALLER_FRAME);
if (MVM_frame_try_return(tc) == 0)
goto return_label;
goto NEXT;
}
OP(return):
MVM_args_assert_void_return_ok(tc, MVM_RETURN_CALLER_FRAME);
if (MVM_frame_try_return(tc) == 0)
goto return_label;
goto NEXT;
OP(eq_i):
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).i64 == GET_REG(cur_op, 4).i64;
cur_op += 6;
goto NEXT;
OP(ne_i):
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).i64 != GET_REG(cur_op, 4).i64;
cur_op += 6;
goto NEXT;
OP(lt_i):
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).i64 < GET_REG(cur_op, 4).i64;
cur_op += 6;
goto NEXT;
OP(le_i):
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).i64 <= GET_REG(cur_op, 4).i64;
cur_op += 6;
goto NEXT;
OP(gt_i):
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).i64 > GET_REG(cur_op, 4).i64;
cur_op += 6;
goto NEXT;
OP(ge_i):
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).i64 >= GET_REG(cur_op, 4).i64;
cur_op += 6;
goto NEXT;
OP(cmp_i): {
MVMint64 a = GET_REG(cur_op, 2).i64, b = GET_REG(cur_op, 4).i64;
GET_REG(cur_op, 0).i64 = (a > b) - (a < b);
cur_op += 6;
goto NEXT;
}
OP(add_i):
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).i64 + GET_REG(cur_op, 4).i64;
cur_op += 6;
goto NEXT;
OP(sub_i):
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).i64 - GET_REG(cur_op, 4).i64;
cur_op += 6;
goto NEXT;
OP(mul_i):
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).i64 * GET_REG(cur_op, 4).i64;
cur_op += 6;
goto NEXT;
OP(div_i): {
MVMint64 num = GET_REG(cur_op, 2).i64;
MVMint64 denom = GET_REG(cur_op, 4).i64;
/* if we have a negative result, make sure we floor rather
* than rounding towards zero. */
if (denom == 0)
MVM_exception_throw_adhoc(tc, "Division by zero");
if ((num < 0) ^ (denom < 0)) {
if ((num % denom) != 0) {
GET_REG(cur_op, 0).i64 = num / denom - 1;
} else {
GET_REG(cur_op, 0).i64 = num / denom;
}
} else {
GET_REG(cur_op, 0).i64 = num / denom;
}
cur_op += 6;
goto NEXT;
}
OP(div_u):
GET_REG(cur_op, 0).u64 = GET_REG(cur_op, 2).u64 / GET_REG(cur_op, 4).u64;
cur_op += 6;
goto NEXT;
OP(mod_i): {
MVMint64 numer = GET_REG(cur_op, 2).i64;
MVMint64 denom = GET_REG(cur_op, 4).i64;
if (denom == 0)
MVM_exception_throw_adhoc(tc, "Modulation by zero");
GET_REG(cur_op, 0).i64 = numer % denom;
cur_op += 6;
goto NEXT;
}
OP(mod_u):
GET_REG(cur_op, 0).u64 = GET_REG(cur_op, 2).u64 % GET_REG(cur_op, 4).u64;
cur_op += 6;
goto NEXT;
OP(neg_i):
GET_REG(cur_op, 0).i64 = -GET_REG(cur_op, 2).i64;
cur_op += 4;
goto NEXT;
OP(abs_i): {
MVMint64 v = GET_REG(cur_op, 2).i64;
MVMint64 mask = v >> 63;
GET_REG(cur_op, 0).i64 = (v + mask) ^ mask;
cur_op += 4;
goto NEXT;
}
OP(inc_i):
GET_REG(cur_op, 0).i64++;
cur_op += 2;
goto NEXT;
OP(inc_u):
GET_REG(cur_op, 0).u64++;
cur_op += 2;
goto NEXT;
OP(dec_i):
GET_REG(cur_op, 0).i64--;
cur_op += 2;
goto NEXT;
OP(dec_u):
GET_REG(cur_op, 0).u64--;
cur_op += 2;
goto NEXT;
OP(band_i):
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).i64 & GET_REG(cur_op, 4).i64;
cur_op += 6;
goto NEXT;
OP(bor_i):
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).i64 | GET_REG(cur_op, 4).i64;
cur_op += 6;
goto NEXT;
OP(bxor_i):
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).i64 ^ GET_REG(cur_op, 4).i64;
cur_op += 6;
goto NEXT;
OP(bnot_i):
GET_REG(cur_op, 0).i64 = ~GET_REG(cur_op, 2).i64;
cur_op += 4;
goto NEXT;
OP(blshift_i):
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).i64 << GET_REG(cur_op, 4).i64;
cur_op += 6;
goto NEXT;
OP(brshift_i):
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).i64 >> GET_REG(cur_op, 4).i64;
cur_op += 6;
goto NEXT;
OP(pow_i): {
MVMint64 base = GET_REG(cur_op, 2).i64;
MVMint64 exp = GET_REG(cur_op, 4).i64;
MVMint64 result = 1;
/* "Exponentiation by squaring" */
if (exp < 0) {
result = 0; /* because 1/base**-exp is between 0 and 1 */
}
else {
while (exp) {
if (exp & 1)
result *= base;
exp >>= 1;
base *= base;
}
}
GET_REG(cur_op, 0).i64 = result;
}
cur_op += 6;
goto NEXT;
OP(not_i): {
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).i64 ? 0 : 1;
cur_op += 4;
goto NEXT;
}
OP(gcd_i): {
MVMint64 a = labs(GET_REG(cur_op, 2).i64), b = labs(GET_REG(cur_op, 4).i64), c;
while ( b != 0 ) {
c = a % b; a = b; b = c;
}
GET_REG(cur_op, 0).i64 = a;
cur_op += 6;
goto NEXT;
}
OP(lcm_i): {
MVMint64 a = GET_REG(cur_op, 2).i64, b = GET_REG(cur_op, 4).i64, c, a_ = a, b_ = b;
while ( b != 0 ) {
c = a % b; a = b; b = c;
}
c = a;
GET_REG(cur_op, 0).i64 = a_ / c * b_;
cur_op += 6;
goto NEXT;
}
OP(eq_n):
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).n64 == GET_REG(cur_op, 4).n64;
cur_op += 6;
goto NEXT;
OP(ne_n):
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).n64 != GET_REG(cur_op, 4).n64;
cur_op += 6;
goto NEXT;
OP(lt_n):
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).n64 < GET_REG(cur_op, 4).n64;
cur_op += 6;
goto NEXT;
OP(le_n):
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).n64 <= GET_REG(cur_op, 4).n64;
cur_op += 6;
goto NEXT;
OP(gt_n):
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).n64 > GET_REG(cur_op, 4).n64;
cur_op += 6;
goto NEXT;
OP(ge_n):
GET_REG(cur_op, 0).i64 = GET_REG(cur_op, 2).n64 >= GET_REG(cur_op, 4).n64;
cur_op += 6;
goto NEXT;
OP(cmp_n): {
MVMnum64 a = GET_REG(cur_op, 2).n64, b = GET_REG(cur_op, 4).n64;
GET_REG(cur_op, 0).i64 = (a > b) - (a < b);
cur_op += 6;
goto NEXT;
}
OP(add_n):
GET_REG(cur_op, 0).n64 = GET_REG(cur_op, 2).n64 + GET_REG(cur_op, 4).n64;
cur_op += 6;
goto NEXT;
OP(sub_n):
GET_REG(cur_op, 0).n64 = GET_REG(cur_op, 2).n64 - GET_REG(cur_op, 4).n64;
cur_op += 6;
goto NEXT;
OP(mul_n):
GET_REG(cur_op, 0).n64 = GET_REG(cur_op, 2).n64 * GET_REG(cur_op, 4).n64;
cur_op += 6;
goto NEXT;
OP(div_n):
GET_REG(cur_op, 0).n64 = GET_REG(cur_op, 2).n64 / GET_REG(cur_op, 4).n64;
cur_op += 6;
goto NEXT;
OP(mod_n): {
MVMnum64 a = GET_REG(cur_op, 2).n64;
MVMnum64 b = GET_REG(cur_op, 4).n64;
GET_REG(cur_op, 0).n64 = b == 0 ? a : a - b * floor(a / b);
cur_op += 6;
goto NEXT;
}
OP(neg_n):
GET_REG(cur_op, 0).n64 = -GET_REG(cur_op, 2).n64;
cur_op += 4;
goto NEXT;
OP(abs_n):
GET_REG(cur_op, 0).n64 = fabs(GET_REG(cur_op, 2).n64);
cur_op += 4;
goto NEXT;
OP(pow_n): {
MVMnum64 x = GET_REG(cur_op, 2).n64;
MVMnum64 y = GET_REG(cur_op, 4).n64;
#ifdef MVM_HAS_SUBSTANDARD_POW
if (y == 0.0 || x == 1.0) {
GET_REG(cur_op, 0).n64 = 1.0;
}
else if (x == 0.0 && y < 0.0) {
/* If x is +0 or -0, and y is an odd integer less than 0, a
* pole error occurs and HUGE_VAL, HUGE_VALF, or HUGE_VALL,
* is returned, with the same sign as x.
*
* If x is +0 or -0, and y is less than 0 and not an odd
* integer, a pole error occurs and +HUGE_VAL, +HUGE_VALF,
* or +HUGE_VALL, is returned.
*
*
* Which, you can rearrange to
* if and only if "y is a negative odd integer and x is -0"
* then it's -Inf
* else it's always +Inf
*/
if (MVM_num_isnegzero(tc, x)
&& fmod(y, 2.0) == -1.0) {
GET_REG(cur_op, 0).n64 = MVM_num_neginf(tc);
}
else {
GET_REG(cur_op, 0).n64 = MVM_num_posinf(tc);
}
}
/* There are more corner cases, but these (so far) are all that
* I have found that (some targetable) systems get wrong. */
else {
GET_REG(cur_op, 0).n64 = pow(x, y);
}
#else
GET_REG(cur_op, 0).n64 = pow(x, y);
#endif
cur_op += 6;
goto NEXT;
}
OP(ceil_n):
GET_REG(cur_op, 0).n64 = ceil(GET_REG(cur_op, 2).n64);
cur_op += 4;
goto NEXT;
OP(floor_n):
GET_REG(cur_op, 0).n64 = floor(GET_REG(cur_op, 2).n64);
cur_op += 4;
goto NEXT;
OP(sin_n):
GET_REG(cur_op, 0).n64 = sin(GET_REG(cur_op, 2).n64);
cur_op += 4;
goto NEXT;
OP(asin_n): {
MVMnum64 x = GET_REG(cur_op, 2).n64;
GET_REG(cur_op, 0).n64 =
#ifdef MVM_HAS_SUBSTANDARD_ASIN
(x < -1.0 || x > 1.0) ? MVM_num_nan(tc) :
#endif
asin(x);
cur_op += 4;
goto NEXT;
}
OP(cos_n):
GET_REG(cur_op, 0).n64 = cos(GET_REG(cur_op, 2).n64);
cur_op += 4;
goto NEXT;
OP(acos_n): {
MVMnum64 x = GET_REG(cur_op, 2).n64;
GET_REG(cur_op, 0).n64 =
#ifdef MVM_HAS_SUBSTANDARD_ACOS
(x < -1.0 || x > 1.0) ? MVM_num_nan(tc) :
#endif
acos(x);
cur_op += 4;
goto NEXT;
}
OP(tan_n):
GET_REG(cur_op, 0).n64 = tan(GET_REG(cur_op, 2).n64);
cur_op += 4;
goto NEXT;
OP(atan_n):
GET_REG(cur_op, 0).n64 = atan(GET_REG(cur_op, 2).n64);
cur_op += 4;
goto NEXT;
OP(atan2_n):
GET_REG(cur_op, 0).n64 = atan2(GET_REG(cur_op, 2).n64,
GET_REG(cur_op, 4).n64);
cur_op += 6;
goto NEXT;
OP(sinh_n):
GET_REG(cur_op, 0).n64 = sinh(GET_REG(cur_op, 2).n64);
cur_op += 4;
goto NEXT;
OP(cosh_n):
GET_REG(cur_op, 0).n64 = cosh(GET_REG(cur_op, 2).n64);
cur_op += 4;
goto NEXT;
OP(tanh_n):
GET_REG(cur_op, 0).n64 = tanh(GET_REG(cur_op, 2).n64);
cur_op += 4;
goto NEXT;
OP(sqrt_n):
GET_REG(cur_op, 0).n64 = sqrt(GET_REG(cur_op, 2).n64);
cur_op += 4;
goto NEXT;
OP(log_n): {
MVMnum64 x = GET_REG(cur_op, 2).n64;
GET_REG(cur_op, 0).n64 =
#ifdef MVM_HAS_SUBSTANDARD_LOG
x < 0 ? MVM_num_nan(tc) :
#endif
log(x);
cur_op += 4;
goto NEXT;
}
OP(exp_n):
GET_REG(cur_op, 0).n64 = exp(GET_REG(cur_op, 2).n64);
cur_op += 4;
goto NEXT;
OP(coerce_in):
GET_REG(cur_op, 0).n64 = (MVMnum64)GET_REG(cur_op, 2).i64;
cur_op += 4;
goto NEXT;
OP(coerce_ni):
GET_REG(cur_op, 0).i64 = (MVMint64)GET_REG(cur_op, 2).n64;
cur_op += 4;
goto NEXT;
OP(coerce_is):
GET_REG(cur_op, 0).s = MVM_coerce_i_s(tc, GET_REG(cur_op, 2).i64);
cur_op += 4;
goto NEXT;
OP(coerce_ns):
GET_REG(cur_op, 0).s = MVM_coerce_n_s(tc, GET_REG(cur_op, 2).n64);
cur_op += 4;
goto NEXT;
OP(coerce_si):
GET_REG(cur_op, 0).i64 = MVM_coerce_s_i(tc, GET_REG(cur_op, 2).s);
cur_op += 4;
goto NEXT;
OP(coerce_sn):
GET_REG(cur_op, 0).n64 = MVM_coerce_s_n(tc, GET_REG(cur_op, 2).s);
cur_op += 4;
goto NEXT;
OP(smrt_intify): {
/* Increment PC before calling coercer, as it may make
* a method call to get the result. */
MVMObject *obj = GET_REG(cur_op, 2).o;
MVMRegister *res = &GET_REG(cur_op, 0);
cur_op += 4;
MVM_coerce_smart_intify(tc, obj, res);
goto NEXT;
}
OP(smrt_numify): {
/* Increment PC before calling coercer, as it may make
* a method call to get the result. */
MVMObject *obj = GET_REG(cur_op, 2).o;
MVMRegister *res = &GET_REG(cur_op, 0);
cur_op += 4;
MVM_coerce_smart_numify(tc, obj, res);
goto NEXT;
}
OP(smrt_strify): {
/* Increment PC before calling coercer, as it may make
* a method call to get the result. */
MVMObject *obj = GET_REG(cur_op, 2).o;
MVMRegister *res = &GET_REG(cur_op, 0);
cur_op += 4;
MVM_coerce_smart_stringify(tc, obj, res);
goto NEXT;
}
OP(prepargs):
/* Store callsite in the frame so that the GC knows how to mark
* any arguments. Note that since none of the arg-setting ops can
* trigger GC, there's no way the setup can be interrupted, so we
* don't need to clear the args buffer before we start. */
cur_callsite = cu->body.callsites[GET_UI16(cur_op, 0)];
tc->cur_frame->cur_args_callsite = cur_callsite;
cur_op += 2;
goto NEXT;
OP(arg_i):
tc->cur_frame->args[GET_UI16(cur_op, 0)].i64 = GET_REG(cur_op, 2).i64;
cur_op += 4;
goto NEXT;
OP(arg_n):
tc->cur_frame->args[GET_UI16(cur_op, 0)].n64 = GET_REG(cur_op, 2).n64;
cur_op += 4;
goto NEXT;
OP(arg_s):
tc->cur_frame->args[GET_UI16(cur_op, 0)].s = GET_REG(cur_op, 2).s;
cur_op += 4;
goto NEXT;
OP(arg_o):
tc->cur_frame->args[GET_UI16(cur_op, 0)].o = GET_REG(cur_op, 2).o;
cur_op += 4;
goto NEXT;
OP(argconst_i):
tc->cur_frame->args[GET_UI16(cur_op, 0)].i64 = MVM_BC_get_I64(cur_op, 2);
cur_op += 10;