diff options
Diffstat (limited to 'sys/compat/ia32/ia32_sysvec.c')
| -rw-r--r-- | sys/compat/ia32/ia32_sysvec.c | 45 |
1 files changed, 0 insertions, 45 deletions
diff --git a/sys/compat/ia32/ia32_sysvec.c b/sys/compat/ia32/ia32_sysvec.c index e1c6102..2a0d684 100644 --- a/sys/compat/ia32/ia32_sysvec.c +++ b/sys/compat/ia32/ia32_sysvec.c @@ -86,8 +86,6 @@ CTASSERT(sizeof(struct ia32_sigframe4) == 408); #endif static register_t *ia32_copyout_strings(struct image_params *imgp); -static void ia32_setregs(struct thread *td, u_long entry, u_long stack, - u_long ps_strings); static void ia32_fixlimits(struct image_params *imgp); extern struct sysent freebsd32_sysent[]; @@ -244,49 +242,6 @@ ia32_copyout_strings(struct image_params *imgp) return ((register_t *)stack_base); } -/* - * Clear registers on exec - * XXX backend MD - */ -extern int _ucode32sel, _udatasel; -void -ia32_setregs(td, entry, stack, ps_strings) - struct thread *td; - u_long entry; - u_long stack; - u_long ps_strings; -{ - struct trapframe *regs = td->td_frame; - struct pcb *pcb = td->td_pcb; - - wrmsr(MSR_FSBASE, 0); - wrmsr(MSR_KGSBASE, 0); /* User value while we're in the kernel */ - pcb->pcb_fsbase = 0; - pcb->pcb_gsbase = 0; - load_ds(_udatasel); - load_es(_udatasel); - load_fs(_udatasel); - load_gs(_udatasel); - pcb->pcb_ds = _udatasel; - pcb->pcb_es = _udatasel; - pcb->pcb_fs = _udatasel; - pcb->pcb_gs = _udatasel; - - bzero((char *)regs, sizeof(struct trapframe)); - regs->tf_rip = entry; - regs->tf_rsp = stack; - regs->tf_rflags = PSL_USER | (regs->tf_rflags & PSL_T); - regs->tf_ss = _udatasel; - regs->tf_cs = _ucode32sel; - regs->tf_rbx = ps_strings; - load_cr0(rcr0() | CR0_MP | CR0_TS); - fpstate_drop(td); - - /* Return via doreti so that we can change to a different %cs */ - pcb->pcb_flags |= PCB_FULLCTX; - td->td_retval[1] = 0; -} - static u_long ia32_maxdsiz = IA32_MAXDSIZ; SYSCTL_ULONG(_compat_ia32, OID_AUTO, maxdsiz, CTLFLAG_RW, &ia32_maxdsiz, 0, ""); static u_long ia32_maxssiz = IA32_MAXSSIZ; |
