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MFi386: revision 190617

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Fill the fsbase and gsbase fields of the mcontext structure on i386.
This commit is contained in:
Yoshihiro Takahashi 2009-04-08 11:35:47 +00:00
parent 4970b8ae0a
commit 30a8aaf0df
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=190840
1 changed files with 16 additions and 0 deletions
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16
sys/pc98/pc98/machdep.c
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@ -525,6 +525,7 @@ sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
struct sigacts *psp;
char *sp;
struct trapframe *regs;
struct segment_descriptor *sdp;
int sig;
int oonstack;
@ -561,6 +562,15 @@ sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
sf.sf_uc.uc_mcontext.mc_len = sizeof(sf.sf_uc.uc_mcontext); /* magic */
get_fpcontext(td, &sf.sf_uc.uc_mcontext);
fpstate_drop(td);
/*
* Unconditionally fill the fsbase and gsbase into the mcontext.
*/
sdp = &td->td_pcb->pcb_gsd;
sf.sf_uc.uc_mcontext.mc_fsbase = sdp->sd_hibase << 24 |
sdp->sd_lobase;
sdp = &td->td_pcb->pcb_fsd;
sf.sf_uc.uc_mcontext.mc_gsbase = sdp->sd_hibase << 24 |
sdp->sd_lobase;
/* Allocate space for the signal handler context. */
if ((td->td_pflags & TDP_ALTSTACK) != 0 && !oonstack &&
@ -2410,6 +2420,7 @@ int
get_mcontext(struct thread *td, mcontext_t *mcp, int flags)
{
struct trapframe *tp;
struct segment_descriptor *sdp;
tp = td->td_frame;
@ -2441,6 +2452,11 @@ get_mcontext(struct thread *td, mcontext_t *mcp, int flags)
mcp->mc_ss = tp->tf_ss;
mcp->mc_len = sizeof(*mcp);
get_fpcontext(td, mcp);
sdp = &td->td_pcb->pcb_gsd;
mcp->mc_fsbase = sdp->sd_hibase << 24 | sdp->sd_lobase;
sdp = &td->td_pcb->pcb_fsd;
mcp->mc_gsbase = sdp->sd_hibase << 24 | sdp->sd_lobase;
return (0);
}