static void
store_exception(jit_int32_t regval, jit_int32_t ipreg)
{
jit_stxi(offsetof(oexception_t, ip), regval, ipreg);
/* Current fp */
if (GPR[FRAME] != JIT_NOREG)
jit_stxi(offsetof(oexception_t, fp), regval, GPR[FRAME]);
else {
jit_ldxi(JIT_R0, JIT_V0, offsetof(othread_t, fp));
jit_stxi(offsetof(oexception_t, fp), regval, JIT_R0);
}
/* Current sp */
if (GPR[STACK] != JIT_NOREG)
jit_stxi(offsetof(oexception_t, sp), regval, GPR[STACK]);
else {
jit_ldxi(JIT_R0, JIT_V0, offsetof(othread_t, sp));
jit_stxi(offsetof(oexception_t, sp), regval, JIT_R0);
}
/* Current this (if there is a this register) */
if (GPR[THIS] != JIT_NOREG)
jit_stxi(offsetof(oexception_t, th), regval, GPR[THIS]);
/* Previous exception frame */
jit_ldxi(JIT_R0, JIT_V0, offsetof(othread_t, ex));
jit_stxi(offsetof(oexception_t, ex), regval, JIT_R0);
/* Update current exception frame */
jit_stxi(offsetof(othread_t, ex), JIT_V0, regval);
}
void
_jit_pushargi_d(jit_state_t *_jit, jit_float64_t u)
{
jit_int32_t regno;
regno = jit_get_reg(jit_class_fpr);
jit_movi_d(regno, u);
if (jit_arg_d_reg_p(_jitc->function->call.argi)) {
jit_stxi_d(-8, JIT_FP, regno);
jit_ldxi(_O0 + _jitc->function->call.argi, JIT_FP, -8);
jit_ldxi(_O0 + _jitc->function->call.argi + 1, JIT_FP, -4);
_jitc->function->call.argi += 2;
}
else if (jit_arg_reg_p(_jitc->function->call.argi)) {
jit_stxi_f(-8, JIT_FP, regno);
jit_ldxi(_O0 + _jitc->function->call.argi, JIT_FP, -8);
++_jitc->function->call.argi;
jit_stxi_f(stack_framesize, JIT_SP, regno + 1);
_jitc->function->call.size += sizeof(jit_float32_t);
}
else {
jit_stxi_f(_jitc->function->call.size + stack_framesize,
JIT_SP, regno);
jit_stxi_f(_jitc->function->call.size + stack_framesize + 4,
JIT_SP, regno + 1);
_jitc->function->call.size += sizeof(jit_float64_t);
}
jit_unget_reg(regno);
}
static void
unwind_exception(jit_int32_t regval, obool_t unsafe)
{
jit_int32_t frame;
jit_int32_t stack;
jit_node_t *equal;
/* Need to restore and resync thread state */
frame = GPR[FRAME] != JIT_NOREG ? GPR[FRAME] : JIT_R0;
stack = GPR[STACK] != JIT_NOREG ? GPR[STACK] : JIT_R0;
/* Restore fp */
jit_ldxi(frame, regval, offsetof(oexception_t, fp));
jit_stxi(offsetof(othread_t, fp), JIT_V0, frame);
/* Restore sp */
if (unsafe) {
/* If throw may be from another vm stack frame, need to
* zero memory, or it may later be cast to the wrong object;
* the logic is somewhat optimized, to zero memory before
* function return instead of function call, but exceptions
* break all rules. */
if (GPR[STACK] != JIT_NOREG) {
jit_ldxi(GPR[STACK], regval, offsetof(oexception_t, sp));
jit_ldxi(JIT_R1, JIT_V0, offsetof(othread_t, sp));
equal = jit_beqr(GPR[STACK], JIT_R1);
jit_subr(JIT_R0, GPR[STACK], JIT_R1);
jit_prepare();
jit_pushargr(JIT_R1);
jit_pushargi(0);
jit_pushargr(JIT_R0);
jit_finishi(memset);
jit_patch(equal);
jit_stxi(offsetof(othread_t, sp), JIT_V0, GPR[STACK]);
}
else {
jit_ldxi(JIT_R0, regval, offsetof(oexception_t, sp));
jit_ldxi(JIT_R1, JIT_V0, offsetof(othread_t, sp));
equal = jit_beqr(JIT_R0, JIT_R1);
jit_subr(JIT_R0, JIT_R0, JIT_R1);
jit_prepare();
jit_pushargr(JIT_R1);
jit_pushargi(0);
jit_pushargr(JIT_R0);
jit_finishi(memset);
jit_ldxi(JIT_R0, regval, offsetof(oexception_t, sp));
jit_patch(equal);
jit_stxi(offsetof(othread_t, sp), JIT_V0, JIT_R0);
}
}
else {
jit_ldxi(stack, regval, offsetof(oexception_t, sp));
jit_stxi(offsetof(othread_t, sp), JIT_V0, stack);
}
/* Restore this (if there is a this register) */
if (GPR[THIS] != JIT_NOREG)
jit_ldxi(GPR[THIS], regval, offsetof(oexception_t, th));
/* Restore exception frame */
jit_ldxi(JIT_R0, regval, offsetof(oexception_t, ex));
jit_stxi(offsetof(othread_t, ex), JIT_V0, JIT_R0);
}
jit_value pop_int(Frame* frame) {
jit_value reg = pop_reg(frame);
struct jit* jit = frame->jit;
jit_ldxi(jit, frame->accum[1], reg, offsetof(YValue, type), sizeof(void*));
jit_movi(jit, frame->accum[2], 0);
jit_op* not_int_jump = jit_bner(jit, (intptr_t) JIT_FORWARD, frame->accum[1], frame->IntType);
jit_ldxi(jit, frame->accum[2], reg, offsetof(YInteger, value), sizeof(int64_t));
jit_patch(jit, not_int_jump);
jit_movr(jit, frame->accum[0], frame->accum[2]);
return frame->accum[0];
}
void
_jit_putargr_f(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
{
assert(v->code == jit_code_arg_f);
if (jit_arg_reg_p(v->u.w)) {
jit_stxi_f(-4, JIT_FP, u);
jit_ldxi(_I0 + v->u.w, JIT_FP, -4);
}
else
jit_stxi_f(v->u.w, JIT_FP, u);
}
void
_jit_putargi_d(jit_state_t *_jit, jit_float64_t u, jit_node_t *v)
{
jit_int32_t regno, gpr;
assert(v->code == jit_code_arg_d);
regno = jit_get_reg(jit_class_fpr);
jit_movi_d(regno, u);
if (jit_arg_d_reg_p(v->u.w)) {
jit_stxi_d(-8, JIT_FP, regno);
jit_ldxi(_I0 + v->u.w, JIT_FP, -8);
jit_ldxi(_I0 + v->u.w + 1, JIT_FP, -4);
}
else if (jit_arg_reg_p(v->u.w)) {
gpr = jit_get_reg(jit_class_gpr);
jit_stxi_d(-8, JIT_FP, regno);
jit_ldxi(_I0 + v->u.w, JIT_FP, -8);
jit_ldxi(gpr, JIT_FP, -4);
jit_stxi(stack_framesize, JIT_FP, gpr);
jit_unget_reg(gpr);
}
else if ((v->u.w & 7) == 0)
jit_stxi_d(v->u.w, JIT_FP, regno);
else {
jit_stxi_d(-8, JIT_FP, regno);
gpr = jit_get_reg(jit_class_gpr);
jit_ldxi(gpr, JIT_FP, -8);
jit_stxi(v->u.w, JIT_FP, gpr);
jit_ldxi(gpr, JIT_FP, -4);
jit_stxi(v->u.w + 4, JIT_FP, gpr);
jit_unget_reg(gpr);
}
jit_unget_reg(regno);
}
void
_jit_pushargr_f(jit_state_t *_jit, jit_int32_t u)
{
if (jit_arg_reg_p(_jitc->function->call.argi)) {
jit_stxi_f(-4, JIT_FP, u);
jit_ldxi(_O0 + _jitc->function->call.argi, JIT_FP, -4);
++_jitc->function->call.argi;
}
else {
jit_stxi_f(_jitc->function->call.size + stack_framesize, JIT_SP, u);
_jitc->function->call.size += sizeof(jit_float32_t);
}
}
void
_jit_putargi_f(jit_state_t *_jit, jit_float32_t u, jit_node_t *v)
{
jit_int32_t regno;
assert(v->code == jit_code_arg_f);
regno = jit_get_reg(jit_class_fpr);
jit_movi_f(regno, u);
if (jit_arg_reg_p(v->u.w)) {
jit_stxi_f(-4, JIT_FP, regno);
jit_ldxi(_I0 + v->u.w, JIT_FP, -4);
}
else
jit_stxi_f(v->u.w, JIT_FP, regno);
jit_unget_reg(regno);
}
static void
load_exception(jit_int32_t regval, oword_t offset)
{
if (otype(current_record) == t_namespace) {
if (GPR[GLOBAL] != JIT_NOREG)
jit_addi(regval, GPR[GLOBAL], offset);
else
jit_movi(regval, (oword_t)gd + offset);
}
else {
if (GPR[FRAME] != JIT_NOREG)
jit_addi(regval, GPR[FRAME], offset);
else {
jit_ldxi(regval, JIT_V0, offsetof(othread_t, fp));
jit_addi(regval, regval, offset);
}
}
}
