diff options
| author | kib <kib@FreeBSD.org> | 2010-06-05 15:59:59 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2010-06-05 15:59:59 +0000 |
| commit | 2d77212fe48ecc0a97a3c56ca4cb8dc37493a066 (patch) | |
| tree | bcc333531405cbc8269cbb94116e1781440b2ed4 /sys/i386/linux/linux_ptrace.c | |
| parent | fbdcfea8cb5a809b733223e1c53a383040e1dc4b (diff) | |
| download | FreeBSD-src-2d77212fe48ecc0a97a3c56ca4cb8dc37493a066.zip FreeBSD-src-2d77212fe48ecc0a97a3c56ca4cb8dc37493a066.tar.gz | |
Introduce the x86 kernel interfaces to allow kernel code to use
FPU/SSE hardware. Caller should provide a save area that is chained
into the stack of the areas; pcb save_area for usermode FPU state is
on top. The pcb now contains a pointer to the current FPU saved area,
used during FPUDNA handling and context switches. There is also a
facility to allow the kernel thread to use pcb save_area.
Change the dreaded warnings "npxdna in kernel mode!" into the panics
when FPU usage is not registered.
KPI discussed with: fabient
Tested by: pho, fabient
Hardware provided by: Sentex Communications
MFC after: 1 month
Diffstat (limited to 'sys/i386/linux/linux_ptrace.c')
| -rw-r--r-- | sys/i386/linux/linux_ptrace.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/i386/linux/linux_ptrace.c b/sys/i386/linux/linux_ptrace.c index daee9e5..e9559f8 100644 --- a/sys/i386/linux/linux_ptrace.c +++ b/sys/i386/linux/linux_ptrace.c @@ -224,7 +224,7 @@ linux_proc_read_fpxregs(struct thread *td, struct linux_pt_fpxreg *fpxregs) PROC_LOCK_ASSERT(td->td_proc, MA_OWNED); if (cpu_fxsr == 0 || (td->td_proc->p_flag & P_INMEM) == 0) return (EIO); - bcopy(&td->td_pcb->pcb_save.sv_xmm, fpxregs, sizeof(*fpxregs)); + bcopy(&td->td_pcb->pcb_user_save.sv_xmm, fpxregs, sizeof(*fpxregs)); return (0); } @@ -235,7 +235,7 @@ linux_proc_write_fpxregs(struct thread *td, struct linux_pt_fpxreg *fpxregs) PROC_LOCK_ASSERT(td->td_proc, MA_OWNED); if (cpu_fxsr == 0 || (td->td_proc->p_flag & P_INMEM) == 0) return (EIO); - bcopy(fpxregs, &td->td_pcb->pcb_save.sv_xmm, sizeof(*fpxregs)); + bcopy(fpxregs, &td->td_pcb->pcb_user_save.sv_xmm, sizeof(*fpxregs)); return (0); } #endif |
