Alien-TinyCCx
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}
gv(regmask(pplan->start));
/* Mark register as used so that gcall_or_jmp use another one
(regs >=4 are free as never used to pass parameters) */
pplan->sval->r = vtop->r;
break;
}
vtop--;
}
}
/* second pass to restore registers that were saved on stack by accident.
Maybe redundant after the "lvalue_save" patch in tccgen.c:gv() */
if (++pass < 2)
goto again;
/* Manually free remaining registers since next parameters are loaded
* manually, without the help of gv(int). */
save_regs(nb_args);
if(todo) {
o(0xE8BD0000|todo); /* pop {todo} */
for(pplan = plan->clsplans[CORE_STRUCT_CLASS]; pplan; pplan = pplan->prev) {
int r;
pplan->sval->r = pplan->start;
/* An SValue can only pin 2 registers at best (r and r2) but a structure
can occupy more than 2 registers. Thus, we need to push on the value
stack some fake parameter to have on SValue for each registers used
by a structure (r2 is not used). */
for (r = pplan->start + 1; r <= pplan->end; r++) {
if (todo & (1 << r)) {
nb_extra_sval++;
vpushi(0);
vtop->r = r;
}
}
}
}
return nb_extra_sval;
}
/* Generate function call. The function address is pushed first, then
all the parameters in call order. This functions pops all the
parameters and the function address. */
void gfunc_call(int nb_args)
{
int r, args_size;
int def_float_abi = float_abi;
int todo;
struct plan plan;
#ifdef TCC_ARM_EABI
int variadic;
if (float_abi == ARM_HARD_FLOAT) {
variadic = (vtop[-nb_args].type.ref->c == FUNC_ELLIPSIS);
if (variadic || floats_in_core_regs(&vtop[-nb_args]))
float_abi = ARM_SOFTFP_FLOAT;
}
#endif
/* cannot let cpu flags if other instruction are generated. Also avoid leaving
VT_JMP anywhere except on the top of the stack because it would complicate
the code generator. */
r = vtop->r & VT_VALMASK;
if (r == VT_CMP || (r & ~1) == VT_JMP)
gv(RC_INT);
args_size = assign_regs(nb_args, float_abi, &plan, &todo);
#ifdef TCC_ARM_EABI
if (args_size & 7) { /* Stack must be 8 byte aligned at fct call for EABI */
args_size = (args_size + 7) & ~7;
o(0xE24DD004); /* sub sp, sp, #4 */
}
#endif
nb_args += copy_params(nb_args, &plan, todo);
tcc_free(plan.pplans);
/* Move fct SValue on top as required by gcall_or_jmp */
vrotb(nb_args + 1);
gcall_or_jmp(0);
if (args_size)
gadd_sp(args_size); /* pop all parameters passed on the stack */
#if defined(TCC_ARM_EABI) && defined(TCC_ARM_VFP)
if(float_abi == ARM_SOFTFP_FLOAT && is_float(vtop->type.ref->type.t)) {
if((vtop->type.ref->type.t & VT_BTYPE) == VT_FLOAT) {
o(0xEE000A10); /*vmov s0, r0 */
} else {
o(0xEE000B10); /* vmov.32 d0[0], r0 */
o(0xEE201B10); /* vmov.32 d0[1], r1 */
}
}
#endif
vtop -= nb_args + 1; /* Pop all params and fct address from value stack */
leaffunc = 0; /* we are calling a function, so we aren't in a leaf function */
float_abi = def_float_abi;
}
/* generate function prolog of type 't' */
void gfunc_prolog(CType *func_type)
{
Sym *sym,*sym2;
int n, nf, size, align, rs, struct_ret = 0;
int addr, pn, sn; /* pn=core, sn=stack */
CType ret_type;
#ifdef TCC_ARM_EABI
struct avail_regs avregs = AVAIL_REGS_INITIALIZER;
#endif
sym = func_type->ref;
func_vt = sym->type;
func_var = (func_type->ref->c == FUNC_ELLIPSIS);
n = nf = 0;
if ((func_vt.t & VT_BTYPE) == VT_STRUCT &&
!gfunc_sret(&func_vt, func_var, &ret_type, &align, &rs))
{
n++;
struct_ret = 1;
( run in 0.593 second using v1.01-cache-2.11-cpan-5735350b133 )