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(output_function_{pro,epi}logue): Save and restore fp-registers only

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if TARGET_68881.

From-SVN: r13145
This commit is contained in:
Richard Kenner 1996-11-12 16:37:12 -05:00
parent d8db81924a
commit f277471f36
1 changed files with 19 additions and 13 deletions
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32
gcc/config/m68k/m68k.c
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@ -255,18 +255,21 @@ output_function_prologue (stream, size)
#endif
}
#endif
for (regno = 16; regno < 24; regno++)
if (regs_ever_live[regno] && ! call_used_regs[regno])
mask |= 1 << (regno - 16);
if ((mask & 0xff) != 0)
if (TARGET_68881)
{
for (regno = 16; regno < 24; regno++)
if (regs_ever_live[regno] && ! call_used_regs[regno])
mask |= 1 << (regno - 16);
if ((mask & 0xff) != 0)
{
#ifdef MOTOROLA
asm_fprintf (stream, "\tfmovm %0I0x%x,-(%Rsp)\n", mask & 0xff);
asm_fprintf (stream, "\tfmovm %0I0x%x,-(%Rsp)\n", mask & 0xff);
#else
asm_fprintf (stream, "\tfmovem %0I0x%x,%Rsp@-\n", mask & 0xff);
asm_fprintf (stream, "\tfmovem %0I0x%x,%Rsp@-\n", mask & 0xff);
#endif
}
mask = 0;
}
mask = 0;
for (regno = 0; regno < 16; regno++)
if (regs_ever_live[regno] && ! call_used_regs[regno])
{
@ -428,12 +431,15 @@ output_function_epilogue (stream, size)
fpoffset = nregs * 8;
#endif
nregs = 0;
for (regno = 16; regno < 24; regno++)
if (regs_ever_live[regno] && ! call_used_regs[regno])
{
nregs++;
fmask |= 1 << (23 - regno);
}
if (TARGET_68881)
{
for (regno = 16; regno < 24; regno++)
if (regs_ever_live[regno] && ! call_used_regs[regno])
{
nregs++;
fmask |= 1 << (23 - regno);
}
}
foffset = fpoffset + nregs * 12;
nregs = 0; mask = 0;
if (frame_pointer_needed)