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MFi386: revision 1.489.

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This commit is contained in:
nyan 2002-01-31 08:35:38 +00:00
parent b09c2d2590
commit a5768e878f
2 changed files with 16 additions and 26 deletions
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21
sys/pc98/i386/machdep.c
View File

@ -721,27 +721,22 @@ sigreturn(td, uap)
} */ *uap;
{
struct proc *p = td->td_proc;
struct osigcontext *oscp;
struct osigreturn_args *ouap;
struct trapframe *regs;
ucontext_t *ucp;
int cs, eflags;
ucp = uap->sigcntxp;
#ifdef COMPAT_43
if (!useracc((caddr_t)ucp, sizeof(struct osigcontext), VM_PROT_READ))
return (EFAULT);
if (((struct osigcontext *)ucp)->sc_trapno == 0x01d516)
return (osigreturn(td, (struct osigreturn_args *)uap));
/*
* Since ucp is not an osigcontext but a ucontext_t, we have to
* check again if all of it is accessible. A ucontext_t is
* much larger, so instead of just checking for the pointer
* being valid for the size of an osigcontext, now check for
* it being valid for a whole, new-style ucontext_t.
*/
ouap = (struct osigreturn_args *)uap;
oscp = ouap->sigcntxp;
if (fuword(&oscp->sc_trapno) == 0x01d516)
return (osigreturn(td, ouap));
#endif
ucp = uap->sigcntxp;
if (!useracc((caddr_t)ucp, sizeof(*ucp), VM_PROT_READ))
return (EFAULT);
regs = td->td_frame;
eflags = ucp->uc_mcontext.mc_eflags;
if (eflags & PSL_VM) {

21
sys/pc98/pc98/machdep.c
View File

@ -721,27 +721,22 @@ sigreturn(td, uap)
} */ *uap;
{
struct proc *p = td->td_proc;
struct osigcontext *oscp;
struct osigreturn_args *ouap;
struct trapframe *regs;
ucontext_t *ucp;
int cs, eflags;
ucp = uap->sigcntxp;
#ifdef COMPAT_43
if (!useracc((caddr_t)ucp, sizeof(struct osigcontext), VM_PROT_READ))
return (EFAULT);
if (((struct osigcontext *)ucp)->sc_trapno == 0x01d516)
return (osigreturn(td, (struct osigreturn_args *)uap));
/*
* Since ucp is not an osigcontext but a ucontext_t, we have to
* check again if all of it is accessible. A ucontext_t is
* much larger, so instead of just checking for the pointer
* being valid for the size of an osigcontext, now check for
* it being valid for a whole, new-style ucontext_t.
*/
ouap = (struct osigreturn_args *)uap;
oscp = ouap->sigcntxp;
if (fuword(&oscp->sc_trapno) == 0x01d516)
return (osigreturn(td, ouap));
#endif
ucp = uap->sigcntxp;
if (!useracc((caddr_t)ucp, sizeof(*ucp), VM_PROT_READ))
return (EFAULT);
regs = td->td_frame;
eflags = ucp->uc_mcontext.mc_eflags;
if (eflags & PSL_VM) {