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Flesh-out ptrace support. This obviously needs more work.

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This commit is contained in:
Marcel Moolenaar 2002-05-20 05:41:20 +00:00
parent 243917fe3b
commit 96700c9c35
2 changed files with 98 additions and 16 deletions
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113
sys/ia64/ia64/machdep.c
View File

@ -1131,15 +1131,34 @@ setregs(struct thread *td, u_long entry, u_long stack, u_long ps_strings)
int
ptrace_set_pc(struct thread *td, unsigned long addr)
{
/* TODO set pc in trapframe */
return 0;
uint64_t slot;
switch (addr & 0xFUL) {
case 0:
slot = IA64_PSR_RI_0;
break;
case 1:
/* XXX we need to deal with MLX bundles here */
slot = IA64_PSR_RI_1;
break;
case 2:
slot = IA64_PSR_RI_2;
break;
default:
return (EINVAL);
}
td->td_frame->tf_cr_iip = addr & ~0x0FULL;
td->td_frame->tf_cr_ipsr = (td->td_frame->tf_cr_ipsr & ~IA64_PSR_RI) |
slot;
return (0);
}
int
ptrace_single_step(struct thread *td)
{
/* TODO arrange for user process to single step */
return 0;
td->td_frame->tf_cr_ipsr |= IA64_PSR_SS;
return (0);
}
int
@ -1153,7 +1172,26 @@ fill_regs(td, regs)
struct thread *td;
struct reg *regs;
{
/* TODO copy trapframe to regs */
bcopy(td->td_frame->tf_b, regs->r_br, sizeof(regs->r_br));
bcopy(td->td_frame->tf_r, regs->r_gr+1, sizeof(td->td_frame->tf_r));
/* TODO copy registers from the register stack. */
regs->r_cfm = td->td_frame->tf_cr_ifs;
regs->r_ip = td->td_frame->tf_cr_iip;
regs->r_ip |= (td->td_frame->tf_cr_ipsr & IA64_PSR_RI) >> 41;
regs->r_pr = td->td_frame->tf_pr;
regs->r_psr = td->td_frame->tf_cr_ipsr;
regs->r_ar_rsc = td->td_frame->tf_ar_rsc;
regs->r_ar_bsp = 0; /* XXX */
regs->r_ar_bspstore = td->td_frame->tf_ar_bspstore;
regs->r_ar_rnat = td->td_frame->tf_ar_rnat;
regs->r_ar_ccv = td->td_frame->tf_ar_ccv;
regs->r_ar_unat = td->td_frame->tf_ar_unat;
regs->r_ar_fpsr = td->td_frame->tf_ar_fpsr;
regs->r_ar_pfs = td->td_frame->tf_ar_pfs;
regs->r_ar_lc = td->td_frame->tf_ar_lc;
regs->r_ar_ec = td->td_frame->tf_ar_ec;
return (0);
}
@ -1162,7 +1200,34 @@ set_regs(td, regs)
struct thread *td;
struct reg *regs;
{
/* TODO copy regs to trapframe */
int error;
error = ptrace_set_pc(td, regs->r_ip);
if (error)
return (error);
td->td_frame->tf_cr_ipsr &= ~0x1FUL; /* clear user mask */
td->td_frame->tf_cr_ipsr |= regs->r_psr & 0x1FUL;
td->td_frame->tf_pr = regs->r_pr;
/* XXX r_ar_bsp */
td->td_frame->tf_ar_rsc = regs->r_ar_rsc;
td->td_frame->tf_ar_pfs = regs->r_ar_pfs;
td->td_frame->tf_cr_ifs = regs->r_cfm;
td->td_frame->tf_ar_bspstore = regs->r_ar_bspstore;
td->td_frame->tf_ar_rnat = regs->r_ar_rnat;
td->td_frame->tf_ar_unat = regs->r_ar_unat;
td->td_frame->tf_ar_ccv = regs->r_ar_ccv;
td->td_frame->tf_ar_fpsr = regs->r_ar_fpsr;
td->td_frame->tf_ar_lc = regs->r_ar_lc;
td->td_frame->tf_ar_ec = regs->r_ar_ec;
bcopy(regs->r_br, td->td_frame->tf_b, sizeof(td->td_frame->tf_b));
bcopy(regs->r_gr+1, td->td_frame->tf_r, sizeof(td->td_frame->tf_r));
/* TODO copy registers to the register stack. */
return (0);
}
@ -1185,12 +1250,20 @@ fill_fpregs(td, fpregs)
struct thread *td;
struct fpreg *fpregs;
{
/* TODO copy fpu state to fpregs */
ia64_fpstate_save(td, 0);
fpregs->fpr_regs[2] = td->td_pcb->pcb_f2;
fpregs->fpr_regs[3] = td->td_pcb->pcb_f3;
fpregs->fpr_regs[4] = td->td_pcb->pcb_f4;
fpregs->fpr_regs[5] = td->td_pcb->pcb_f5;
bcopy(td->td_frame->tf_f, fpregs->fpr_regs+6,
sizeof(td->td_frame->tf_f));
/* XXX f16-f31 */
ia64_fpstate_save(td, 0);
bcopy(td->td_pcb->pcb_highfp, fpregs->fpr_regs+32,
sizeof(td->td_pcb->pcb_highfp));
#if 0
bcopy(&td->td_pcb->pcb_fp, fpregs, sizeof *fpregs);
#endif
return (0);
}
@ -1199,12 +1272,20 @@ set_fpregs(td, fpregs)
struct thread *td;
struct fpreg *fpregs;
{
/* TODO copy fpregs fpu state */
ia64_fpstate_drop(td);
td->td_pcb->pcb_f2 = fpregs->fpr_regs[2];
td->td_pcb->pcb_f3 = fpregs->fpr_regs[3];
td->td_pcb->pcb_f4 = fpregs->fpr_regs[4];
td->td_pcb->pcb_f5 = fpregs->fpr_regs[5];
bcopy(fpregs->fpr_regs+6, td->td_frame->tf_f,
sizeof(td->td_frame->tf_f));
/* XXX f16-f31 */
ia64_fpstate_drop(td);
bcopy(fpregs->fpr_regs+32, td->td_pcb->pcb_highfp,
sizeof(td->td_pcb->pcb_highfp));
#if 0
bcopy(fpregs, &td->td_pcb->pcb_fp, sizeof *fpregs);
#endif
return (0);
}

1
sys/ia64/include/reg.h
View File

@ -55,6 +55,7 @@ struct reg {
uint64_t r_ar_fpsr;
uint64_t r_ar_pfs;
uint64_t r_ar_lc;
uint64_t r_ar_ec;
};
struct fpreg {