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/* $PMDB: sparc64.c,v 1.6 2002/03/07 01:10:52 art Exp $ */
/*
* Copyright (c) 2002 Artur Grabowski <art@openbsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/ptrace.h>
#include <machine/reg.h>
#include <machine/frame.h>
#include "pmdb.h"
static const char *md_reg_names[] = {
"%pc", "%npc", /* %y */
"%o0", "%o1", "%o2", "%o3", "%o4", "%o5", "%o6", "%o7",
"%g0", "%g1", "%g2", "%g3", "%g4", "%g5", "%g6", "%g7",
};
struct md_def md_def = { md_reg_names, 18, 0 };
void
md_def_init(void)
{
/* no need to do anything */
}
int
md_getframe(struct pstate *ps, int frame, struct md_frame *fram)
{
struct frame64 fr;
struct reg r;
reg fp, pc;
reg *outs;
int i;
if (ptrace(PT_GETREGS, ps->ps_pid, (caddr_t)&r, 0) != 0)
return (-1);
if (frame == 0) {
pc = r.r_pc;
fp = r.r_out[6] + BIAS;
/*
* XXX - we need some kind of heuristics here to decide
* if the function has done a save or not and then pick
* the in registers. the problem is just that there are
* no in registers in PT_GETREGS.
*/
outs = (reg *)&r.r_out;
goto out;
}
fp = r.r_out[6] + BIAS;
pc = r.r_out[7];
for (i = 1; i < frame; i++) {
/* Too low or unaligned frame pointer? */
if (fp < 8192 || (fp & 7) != 0)
return (-1);
if (read_from_pid(ps->ps_pid, fp, &fr, sizeof(fr)) < 0)
return -1;
fp = (unsigned long)v9next_frame((&fr));
pc = fr.fr_pc;
/* Too low or unaligned pc ? */
if ((pc < 8192) || (pc & 3) != 0)
return (-1);
outs = (reg *)&fr.fr_arg;
}
out:
fram->pc = pc;
fram->fp = fp;
fram->nargs = 6; /* XXX - don't know the real number */
for (i = 0; i < 6; i++) {
fram->args[i] = fr.fr_arg[i];
}
return 0;
}
int
md_getregs(struct pstate *ps, reg *regs)
{
struct reg r;
int i;
if (ptrace(PT_GETREGS, ps->ps_pid, (caddr_t)&r, 0) != 0)
return -1;
regs[0] = r.r_pc;
regs[1] = r.r_npc;
for (i = 0; i < 8; i++) {
regs[2 + i] = r.r_out[i];
}
for (i = 0; i < 8; i++) {
regs[10 + i] = r.r_global[i];
}
return 0;
}
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