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MIPS: math-emu: Use helpers to manipulate CAUSEF_BD flag.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2014-04-16 01:59:03 +02:00
parent 5a7ebbf893
commit e7e9cae5db
2 changed files with 8 additions and 8 deletions
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14
arch/mips/math-emu/cp1emu.c
View file

@ -933,17 +933,17 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
int pc_inc; int pc_inc;
/* XXX NEC Vr54xx bug workaround */ /* XXX NEC Vr54xx bug workaround */
if (xcp->cp0_cause & CAUSEF_BD) { if (delay_slot(xcp)) {
if (dec_insn.micro_mips_mode) { if (dec_insn.micro_mips_mode) {
if (!mm_isBranchInstr(xcp, dec_insn, &contpc)) if (!mm_isBranchInstr(xcp, dec_insn, &contpc))
xcp->cp0_cause &= ~CAUSEF_BD; clear_delay_slot(xcp);
} else { } else {
if (!isBranchInstr(xcp, dec_insn, &contpc)) if (!isBranchInstr(xcp, dec_insn, &contpc))
xcp->cp0_cause &= ~CAUSEF_BD; clear_delay_slot(xcp);
} }
} }
if (xcp->cp0_cause & CAUSEF_BD) { if (delay_slot(xcp)) {
/* /*
* The instruction to be emulated is in a branch delay slot * The instruction to be emulated is in a branch delay slot
* which means that we have to emulate the branch instruction * which means that we have to emulate the branch instruction
@ -1178,7 +1178,7 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
case bc_op:{ case bc_op:{
int likely = 0; int likely = 0;
if (xcp->cp0_cause & CAUSEF_BD) if (delay_slot(xcp))
return SIGILL; return SIGILL;
#if __mips >= 4 #if __mips >= 4
@ -1201,7 +1201,7 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
return SIGILL; return SIGILL;
} }
xcp->cp0_cause |= CAUSEF_BD; set_delay_slot(xcp);
if (cond) { if (cond) {
/* branch taken: emulate dslot /* branch taken: emulate dslot
* instruction * instruction
@ -1321,7 +1321,7 @@ sigill:
/* we did it !! */ /* we did it !! */
xcp->cp0_epc = contpc; xcp->cp0_epc = contpc;
xcp->cp0_cause &= ~CAUSEF_BD; clear_delay_slot(xcp);
return 0; return 0;
} }

2
arch/mips/math-emu/dsemul.c
View file

@ -59,7 +59,7 @@ int mips_dsemul(struct pt_regs *regs, mips_instruction ir, unsigned long cpc)
(ir == 0)) { (ir == 0)) {
/* NOP is easy */ /* NOP is easy */
regs->cp0_epc = cpc; regs->cp0_epc = cpc;
regs->cp0_cause &= ~CAUSEF_BD; clear_delay_slot(regs);
return 0; return 0;
} }
#ifdef DSEMUL_TRACE #ifdef DSEMUL_TRACE