/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright (c) 2013 by Delphix. All rights reserved.
*/
#include <mdb/mdb_modapi.h>
#include <mdb/mdb_gcore.h>
#include <mdb/mdb_debug.h>
#include <sys/psw.h>
#include <sys/privregs.h>
uintptr_t
gcore_prgetstackbase(mdb_proc_t *p)
{
return (p->p_usrstack - p->p_stksize);
}
int
gcore_prfetchinstr(mdb_klwp_t *lwp, ulong_t *ip)
{
*ip = (ulong_t)(instr_t)lwp->lwp_pcb.pcb_instr;
return (lwp->lwp_pcb.pcb_flags & INSTR_VALID);
}
int
gcore_prisstep(mdb_klwp_t *lwp)
{
return ((lwp->lwp_pcb.pcb_flags &
(NORMAL_STEP|WATCH_STEP|DEBUG_PENDING)) != 0);
}
void
gcore_getgregs(mdb_klwp_t *lwp, gregset_t grp)
{
struct regs rgs;
struct regs *rp;
if (mdb_vread(&rgs, sizeof (rgs), lwp->lwp_regs) != sizeof (rgs)) {
mdb_warn("Failed to read regs from %p\n", lwp->lwp_regs);
return;
}
rp = &rgs;
#if defined(__amd64)
struct pcb *pcb = &lwp->lwp_pcb;
grp[REG_RDI] = rp->r_rdi;
grp[REG_RSI] = rp->r_rsi;
grp[REG_RDX] = rp->r_rdx;
grp[REG_RCX] = rp->r_rcx;
grp[REG_R8] = rp->r_r8;
grp[REG_R9] = rp->r_r9;
grp[REG_RAX] = rp->r_rax;
grp[REG_RBX] = rp->r_rbx;
grp[REG_RBP] = rp->r_rbp;
grp[REG_R10] = rp->r_r10;
grp[REG_R11] = rp->r_r11;
grp[REG_R12] = rp->r_r12;
grp[REG_R13] = rp->r_r13;
grp[REG_R14] = rp->r_r14;
grp[REG_R15] = rp->r_r15;
grp[REG_FSBASE] = pcb->pcb_fsbase;
grp[REG_GSBASE] = pcb->pcb_gsbase;
if (pcb->pcb_rupdate == 1) {
grp[REG_DS] = pcb->pcb_ds;
grp[REG_ES] = pcb->pcb_es;
grp[REG_FS] = pcb->pcb_fs;
grp[REG_GS] = pcb->pcb_gs;
} else {
grp[REG_DS] = rp->r_ds;
grp[REG_ES] = rp->r_es;
grp[REG_FS] = rp->r_fs;
grp[REG_GS] = rp->r_gs;
}
grp[REG_TRAPNO] = rp->r_trapno;
grp[REG_ERR] = rp->r_err;
grp[REG_RIP] = rp->r_rip;
grp[REG_CS] = rp->r_cs;
grp[REG_SS] = rp->r_ss;
grp[REG_RFL] = rp->r_rfl;
grp[REG_RSP] = rp->r_rsp;
#else
bcopy(&rp->r_gs, grp, sizeof (gregset_t));
#endif
}
int
gcore_prgetrvals(mdb_klwp_t *lwp, long *rval1, long *rval2)
{
struct regs *r = lwptoregs(lwp);
if (r->r_ps & PS_C)
return (r->r_r0);
if (lwp->lwp_eosys == JUSTRETURN) {
*rval1 = 0;
*rval2 = 0;
} else {
*rval1 = r->r_r0;
*rval2 = r->r_r1;
}
return (0);
}