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MFamd64 r238669:

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Force clean FPU state in PCB user FPU save area for PT_I386_{GET,SET}XMMREGS.

Reported by:	bde
MFC after:	1 week
This commit is contained in:
kib 2012-07-21 21:39:02 +00:00
parent 5793dc9994
commit 02cd44f6d4
1 changed files with 2 additions and 0 deletions
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2
sys/i386/i386/ptrace_machdep.c
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@ -54,10 +54,12 @@ cpu_ptrace(struct thread *td, int req, void *addr, int data)
fpstate = &td->td_pcb->pcb_user_save.sv_xmm;
switch (req) {
case PT_GETXMMREGS:
npxgetregs(td);
error = copyout(fpstate, addr, sizeof(*fpstate));
break;
case PT_SETXMMREGS:
npxgetregs(td);
error = copyin(addr, fpstate, sizeof(*fpstate));
fpstate->sv_env.en_mxcsr &= cpu_mxcsr_mask;
break;