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rcsid added

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clr.w -(sp) generated in prolog if register save mask is 0
This commit is contained in:
bal 1984-07-19 10:57:19 +00:00
parent eeeff10a51
commit a520ccdbbc
1 changed files with 11 additions and 1 deletions
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12
mach/m68k2/cg/mach.c
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@ -1,3 +1,7 @@
#ifndef NORCSID
static char rcsid[] = "$Header$";
#endif
/* /*
* (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands. * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
* *
@ -65,6 +69,7 @@ static int been_here;
regscore(off,size,typ,score,totyp) regscore(off,size,typ,score,totyp)
long off; long off;
{ {
if (score == 0) return -1;
switch(typ) { switch(typ) {
case reg_float: case reg_float:
return -1; return -1;
@ -147,7 +152,12 @@ save()
} }
/* Push a mask that indicates which registers were saved */ /* Push a mask that indicates which registers were saved */
assert(nr_d_regs < 8 && nr_a_regs < 8); assert(nr_d_regs < 8 && nr_a_regs < 8);
fprintf(codefile,"move.w #%d,-(sp)\n",nr_d_regs + (nr_a_regs<<3)); if (nr_d_regs == 0 && nr_a_regs == 0) {
fprintf(codefile,"clr.w -(sp)\n");
} else {
fprintf(codefile,"move.w #%d,-(sp)\n",
nr_d_regs + (nr_a_regs<<3));
}
/* Compute AB - LB */ /* Compute AB - LB */
EM_BSIZE = 4 * (nr_d_regs + nr_a_regs) + 10; EM_BSIZE = 4 * (nr_d_regs + nr_a_regs) + 10;