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MFi386: revision 237445

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Commit changes missed from r237435.  Properly calculate the signal
  trampoline addresses after the shared page is enabled.  Handle FreeBSD
  ABIs without shared page support too.

MFi386: revision 238792

  Introduce curpcb magic variable.
This commit is contained in:
Yoshihiro Takahashi 2012-09-23 09:13:57 +00:00
parent a112b2d0e4
commit 47c6c015ff
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=240855
1 changed files with 11 additions and 4 deletions
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15
sys/pc98/pc98/machdep.c
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@ -407,7 +407,13 @@ osendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
}
regs->tf_esp = (int)fp;
regs->tf_eip = PS_STRINGS - szosigcode;
if (p->p_sysent->sv_sigcode_base != 0) {
regs->tf_eip = p->p_sysent->sv_sigcode_base + szsigcode -
szosigcode;
} else {
/* a.out sysentvec does not use shared page */
regs->tf_eip = p->p_sysent->sv_psstrings - szosigcode;
}
regs->tf_eflags &= ~(PSL_T | PSL_D);
regs->tf_cs = _ucodesel;
regs->tf_ds = _udatasel;
@ -534,7 +540,8 @@ freebsd4_sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
}
regs->tf_esp = (int)sfp;
regs->tf_eip = PS_STRINGS - szfreebsd4_sigcode;
regs->tf_eip = p->p_sysent->sv_sigcode_base + szsigcode -
szfreebsd4_sigcode;
regs->tf_eflags &= ~(PSL_T | PSL_D);
regs->tf_cs = _ucodesel;
regs->tf_ds = _udatasel;
@ -685,7 +692,7 @@ sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
}
regs->tf_esp = (int)sfp;
regs->tf_eip = PS_STRINGS - *(p->p_sysent->sv_szsigcode);
regs->tf_eip = p->p_sysent->sv_sigcode_base;
regs->tf_eflags &= ~(PSL_T | PSL_D);
regs->tf_cs = _ucodesel;
regs->tf_ds = _udatasel;
@ -1412,7 +1419,7 @@ exec_setregs(struct thread *td, struct image_params *imgp, u_long stack)
pcb->pcb_dr3 = 0;
pcb->pcb_dr6 = 0;
pcb->pcb_dr7 = 0;
if (pcb == PCPU_GET(curpcb)) {
if (pcb == curpcb) {
/*
* Clear the debug registers on the running
* CPU, otherwise they will end up affecting