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* interp.c (mips16_entry): Add support for floating point cases.

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(SignalException): Pass floating point cases to mips16_entry.
	(ValueFPR): Don't restrict fmt_single and fmt_word to even
	registers.
	(StoreFPR): Likewise.  Also, don't clobber fpr + 1 for fmt_single
	or fmt_word.
	(COP_LW): Pass fmt_word rather than fmt_uninterpreted to StoreFPR,
	and then set the state to fmt_uninterpreted.
	(COP_SW): Temporarily set the state to fmt_word while calling
	ValueFPR.
This commit is contained in:
Ian Lance Taylor 1997-02-06 22:19:05 +00:00
parent e900e695a2
commit da0bce9c27
2 changed files with 61 additions and 16 deletions
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13
sim/mips/ChangeLog
View file

@ -1,3 +1,16 @@
Thu Feb 6 17:16:15 1997 Ian Lance Taylor <ian@cygnus.com>
* interp.c (mips16_entry): Add support for floating point cases.
(SignalException): Pass floating point cases to mips16_entry.
(ValueFPR): Don't restrict fmt_single and fmt_word to even
registers.
(StoreFPR): Likewise. Also, don't clobber fpr + 1 for fmt_single
or fmt_word.
(COP_LW): Pass fmt_word rather than fmt_uninterpreted to StoreFPR,
and then set the state to fmt_uninterpreted.
(COP_SW): Temporarily set the state to fmt_word while calling
ValueFPR.
Tue Feb 4 16:48:25 1997 Ian Lance Taylor <ian@cygnus.com>
* gencode.c (build_instruction): The high order may be set in the

64
sim/mips/interp.c
View file

@ -1624,7 +1624,14 @@ sim_monitor(reason)
uword64 paddr;
int cca;
if (AddressTranslation(A1,isDATA,isLOAD,&paddr,&cca,isHOST,isREAL))
V0 = callback->write(callback,(int)A0,(const char *)((int)paddr),(int)A2);
{
if (A0 == 1)
V0 = callback->write_stdout(callback,(const char *)((int)paddr),
(int)A2);
else
V0 = callback->write(callback,(int)A0,(const char *)((int)paddr),
(int)A2);
}
else
sim_error("Attempt to pass pointer that does not reference simulated memory");
}
@ -1895,11 +1902,11 @@ mips16_entry (insn)
sregs = (insn & 0x0c0) >> 6;
rreg = (insn & 0x020) >> 5;
/* These should be checked by the caller. */
if (aregs == 5 || aregs == 6 || sregs == 3)
/* This should be checked by the caller. */
if (sregs == 3)
abort ();
if (aregs != 7)
if (aregs < 5)
{
int i;
t_reg tsp;
@ -1947,6 +1954,19 @@ mips16_entry (insn)
SP += 32;
if (aregs == 5)
{
FGR[0] = WORD64LO (GPR[4]);
fpr_state[0] = fmt_uninterpreted;
}
else if (aregs == 6)
{
FGR[0] = WORD64LO (GPR[5]);
FGR[1] = WORD64LO (GPR[4]);
fpr_state[0] = fmt_uninterpreted;
fpr_state[1] = fmt_uninterpreted;
}
PC = RA;
}
}
@ -2704,8 +2724,6 @@ SignalException (int exception,...)
simulate a handler for them. */
else if ((IPC & 1) != 0
&& (instruction & 0xf81f) == 0xe809
&& (instruction & 0x700) != 0x500
&& (instruction & 0x700) != 0x600
&& (instruction & 0x0c0) != 0x0c0) {
mips16_entry (instruction);
break;
@ -3000,7 +3018,7 @@ ValueFPR(fpr,fmt)
err = -1;
break;
}
} else if ((fpr & 1) == 0) { /* even registers only */
} else {
switch (fmt) {
case fmt_single:
case fmt_word:
@ -3010,7 +3028,11 @@ ValueFPR(fpr,fmt)
case fmt_uninterpreted:
case fmt_double:
case fmt_long:
value = ((((uword64)FGR[fpr+1]) << 32) | (FGR[fpr] & 0xFFFFFFFF));
if ((fpr & 1) == 0) { /* even registers only */
value = ((((uword64)FGR[fpr+1]) << 32) | (FGR[fpr] & 0xFFFFFFFF));
} else {
SignalException (ReservedInstruction, 0);
}
break;
default :
@ -3061,23 +3083,27 @@ StoreFPR(fpr,fmt,value)
err = -1;
break;
}
} else if ((fpr & 1) == 0) { /* even register number only */
} else {
switch (fmt) {
case fmt_single :
case fmt_word :
FGR[fpr+1] = 0xDEADC0DE;
FGR[fpr] = (value & 0xFFFFFFFF);
fpr_state[fpr + 1] = fmt;
fpr_state[fpr] = fmt;
break;
case fmt_uninterpreted:
case fmt_double :
case fmt_long :
FGR[fpr+1] = (value >> 32);
FGR[fpr] = (value & 0xFFFFFFFF);
fpr_state[fpr + 1] = fmt;
fpr_state[fpr] = fmt;
if ((fpr & 1) == 0) { /* even register number only */
FGR[fpr+1] = (value >> 32);
FGR[fpr] = (value & 0xFFFFFFFF);
fpr_state[fpr + 1] = fmt;
fpr_state[fpr] = fmt;
} else {
fpr_state[fpr] = fmt_unknown;
fpr_state[fpr + 1] = fmt_unknown;
SignalException (ReservedInstruction, 0);
}
break;
default :
@ -3754,7 +3780,8 @@ COP_LW(coproc_num,coproc_reg,memword)
#ifdef DEBUG
printf("DBG: COP_LW: memword = 0x%08X (uword64)memword = 0x%08X%08X\n",memword,WORD64HI(memword),WORD64LO(memword));
#endif
StoreFPR(coproc_reg,fmt_uninterpreted,(uword64)memword);
StoreFPR(coproc_reg,fmt_word,(uword64)memword);
fpr_state[coproc_reg] = fmt_uninterpreted;
break;
#endif /* HASFPU */
@ -3795,11 +3822,16 @@ COP_SW(coproc_num,coproc_reg)
int coproc_num, coproc_reg;
{
unsigned int value = 0;
FP_formats hold;
switch (coproc_num) {
#if defined(HASFPU)
case 1:
#if 1
hold = fpr_state[coproc_reg];
fpr_state[coproc_reg] = fmt_word;
value = (unsigned int)ValueFPR(coproc_reg,fmt_uninterpreted);
fpr_state[coproc_reg] = hold;
#else
#if 1
value = (unsigned int)ValueFPR(coproc_reg,fpr_state[coproc_reg]);