mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-11-05 09:19:27 +01:00
Rename: src/ia64/Gresume-ia64.c -> src/ia64/Gresume.c
}(Logical change 1.241)
This commit is contained in:
homeip.net!davidm
parent
6139bb71c1
commit
5a3ded7a0f
1 changed files with 0 additions and 267 deletions
|
|
@ -1,267 +0,0 @@
|
|||
/* libunwind - a platform-independent unwind library
|
||||
Copyright (C) 2001-2004 Hewlett-Packard Co
|
||||
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
|
||||
|
||||
This file is part of libunwind.
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining
|
||||
a copy of this software and associated documentation files (the
|
||||
"Software"), to deal in the Software without restriction, including
|
||||
without limitation the rights to use, copy, modify, merge, publish,
|
||||
distribute, sublicense, and/or sell copies of the Software, and to
|
||||
permit persons to whom the Software is furnished to do so, subject to
|
||||
the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be
|
||||
included in all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
||||
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
||||
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
||||
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
||||
|
||||
#include <stdlib.h>
|
||||
|
||||
#include "unwind_i.h"
|
||||
#include "offsets.h"
|
||||
|
||||
#ifndef UNW_REMOTE_ONLY
|
||||
|
||||
static inline int
|
||||
local_resume (unw_addr_space_t as, unw_cursor_t *cursor, void *arg)
|
||||
{
|
||||
#if defined(__linux)
|
||||
unw_word_t val, sol, sof, pri_unat, n, pfs;
|
||||
struct cursor *c = (struct cursor *) cursor;
|
||||
struct
|
||||
{
|
||||
unw_word_t r1;
|
||||
unw_word_t r4;
|
||||
unw_word_t r5;
|
||||
unw_word_t r6;
|
||||
unw_word_t r7;
|
||||
unw_word_t r15;
|
||||
unw_word_t r16;
|
||||
unw_word_t r17;
|
||||
unw_word_t r18;
|
||||
}
|
||||
extra;
|
||||
int ret;
|
||||
# define GET_NAT(n) \
|
||||
do \
|
||||
{ \
|
||||
ret = tdep_access_reg (c, UNW_IA64_NAT + (n), &val, 0); \
|
||||
if (ret < 0) \
|
||||
return ret; \
|
||||
if (val) \
|
||||
pri_unat |= (unw_word_t) 1 << n; \
|
||||
} \
|
||||
while (0)
|
||||
|
||||
/* ensure c->pi is up-to-date: */
|
||||
if ((ret = ia64_make_proc_info (c)) < 0)
|
||||
return ret;
|
||||
|
||||
/* Copy contents of r4-r7 into "extra", so that their values end up
|
||||
contiguous, so we can use a single (primary-) UNaT value. */
|
||||
if ((ret = ia64_get (c, c->loc[IA64_REG_R4], &extra.r4)) < 0
|
||||
|| (ret = ia64_get (c, c->loc[IA64_REG_R5], &extra.r5)) < 0
|
||||
|| (ret = ia64_get (c, c->loc[IA64_REG_R6], &extra.r6)) < 0
|
||||
|| (ret = ia64_get (c, c->loc[IA64_REG_R7], &extra.r7)) < 0)
|
||||
return ret;
|
||||
|
||||
/* Form the primary UNaT value: */
|
||||
pri_unat = 0;
|
||||
GET_NAT (4); GET_NAT(5);
|
||||
GET_NAT (6); GET_NAT(7);
|
||||
n = (((uintptr_t) &extra.r4) / 8 - 4) % 64;
|
||||
pri_unat = (pri_unat << n) | (pri_unat >> (64 - n));
|
||||
|
||||
if (unlikely (c->sigcontext_addr))
|
||||
{
|
||||
struct sigcontext *sc = (struct sigcontext *) c->sigcontext_addr;
|
||||
# define PR_SCRATCH 0xffc0 /* p6-p15 are scratch */
|
||||
# define PR_PRESERVED (~(PR_SCRATCH | 1))
|
||||
|
||||
/* We're returning to a frame that was (either directly or
|
||||
indirectly) interrupted by a signal. We have to restore
|
||||
_both_ "preserved" and "scratch" registers. That doesn't
|
||||
leave us any registers to work with, and the only way we can
|
||||
achieve this is by doing a sigreturn().
|
||||
|
||||
Note: it might be tempting to think that we don't have to
|
||||
restore the scratch registers when returning to a frame that
|
||||
was indirectly interrupted by a signal. However, that is not
|
||||
safe because that frame and its descendants could have been
|
||||
using a special convention that stores "preserved" state in
|
||||
scratch registers. For example, the Linux fsyscall
|
||||
convention does this with r11 (to save ar.pfs) and b6 (to
|
||||
save "rp"). */
|
||||
|
||||
sc->sc_gr[12] = c->psp;
|
||||
c->psp = c->sigcontext_addr - c->sigcontext_off;
|
||||
|
||||
sof = (c->cfm & 0x7f);
|
||||
rbs_cover_and_flush (c, sof);
|
||||
|
||||
/* Clear the "in-syscall" flag, because in general we won't be
|
||||
returning to the interruption-point and we need all registers
|
||||
restored. */
|
||||
sc->sc_flags &= ~IA64_SC_FLAG_IN_SYSCALL;
|
||||
sc->sc_ip = c->ip;
|
||||
sc->sc_cfm = c->cfm & (((unw_word_t) 1 << 38) - 1);
|
||||
sc->sc_pr = (c->pr & ~PR_SCRATCH) | (sc->sc_pr & ~PR_PRESERVED);
|
||||
if ((ret = ia64_get (c, c->loc[IA64_REG_PFS], &sc->sc_ar_pfs)) < 0
|
||||
|| (ret = ia64_get (c, c->loc[IA64_REG_FPSR], &sc->sc_ar_fpsr)) < 0
|
||||
|| (ret = ia64_get (c, c->loc[IA64_REG_UNAT], &sc->sc_ar_unat)) < 0)
|
||||
return ret;
|
||||
|
||||
sc->sc_gr[1] = c->pi.gp;
|
||||
if (c->eh_valid_mask & 0x1) sc->sc_gr[15] = c->eh_args[0];
|
||||
if (c->eh_valid_mask & 0x2) sc->sc_gr[16] = c->eh_args[1];
|
||||
if (c->eh_valid_mask & 0x4) sc->sc_gr[17] = c->eh_args[2];
|
||||
if (c->eh_valid_mask & 0x8) sc->sc_gr[18] = c->eh_args[3];
|
||||
Debug (9, "sc: r15=%lx,r16=%lx,r17=%lx,r18=%lx\n",
|
||||
(long) sc->sc_gr[15], (long) sc->sc_gr[16],
|
||||
(long) sc->sc_gr[17], (long) sc->sc_gr[18]);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Account for the fact that _Uia64_install_context() will
|
||||
return via br.ret, which will decrement bsp by size-of-locals. */
|
||||
if ((ret = ia64_get (c, c->loc[IA64_REG_PFS], &pfs)) < 0)
|
||||
return ret;
|
||||
sol = (pfs >> 7) & 0x7f;
|
||||
rbs_cover_and_flush (c, sol);
|
||||
|
||||
extra.r1 = c->pi.gp;
|
||||
extra.r15 = c->eh_args[0];
|
||||
extra.r16 = c->eh_args[1];
|
||||
extra.r17 = c->eh_args[2];
|
||||
extra.r18 = c->eh_args[3];
|
||||
Debug (9, "extra: r15=%lx,r16=%lx,r17=%lx,r18=%lx\n",
|
||||
(long) extra.r15, (long) extra.r16,
|
||||
(long) extra.r17, (long) extra.r18);
|
||||
}
|
||||
Debug (8, "resuming at ip=%lx\n", (long) c->ip);
|
||||
ia64_install_cursor (c, pri_unat, (unw_word_t *) &extra);
|
||||
#elif defined(__hpux)
|
||||
struct cursor *c = (struct cursor *) cursor;
|
||||
|
||||
setcontext (c->as_arg); /* should not return */
|
||||
#endif
|
||||
return -UNW_EINVAL;
|
||||
}
|
||||
|
||||
HIDDEN int
|
||||
ia64_local_resume (unw_addr_space_t as, unw_cursor_t *cursor, void *arg)
|
||||
{
|
||||
return local_resume (as, cursor, arg);
|
||||
}
|
||||
|
||||
#endif /* !UNW_REMOTE_ONLY */
|
||||
|
||||
#ifndef UNW_LOCAL_ONLY
|
||||
|
||||
static inline int
|
||||
remote_install_cursor (struct cursor *c)
|
||||
{
|
||||
int (*access_reg) (unw_addr_space_t, unw_regnum_t, unw_word_t *,
|
||||
int write, void *);
|
||||
int (*access_fpreg) (unw_addr_space_t, unw_regnum_t, unw_fpreg_t *,
|
||||
int write, void *);
|
||||
unw_fpreg_t fpval;
|
||||
unw_word_t val;
|
||||
int reg;
|
||||
|
||||
#if defined(__linux) && !defined(UNW_REMOTE_ONLY)
|
||||
if (c->as == unw_local_addr_space)
|
||||
{
|
||||
/* Take a short-cut: we directly resume out of the cursor and
|
||||
all we need to do is make sure that all locations point to
|
||||
memory, not registers. Furthermore, R4-R7 and NAT4-NAT7 are
|
||||
taken care of by ia64_local_resume() so they don't need to be
|
||||
handled here. */
|
||||
# define MEMIFY(preg, reg) \
|
||||
do { \
|
||||
if (IA64_IS_REG_LOC (c->loc[(preg)])) \
|
||||
c->loc[(preg)] = IA64_LOC_ADDR ((unw_word_t) \
|
||||
tdep_uc_addr(c->as_arg, (reg), \
|
||||
NULL), 0); \
|
||||
} while (0)
|
||||
MEMIFY (IA64_REG_PR, UNW_IA64_PR);
|
||||
MEMIFY (IA64_REG_PFS, UNW_IA64_AR_PFS);
|
||||
MEMIFY (IA64_REG_RNAT, UNW_IA64_AR_RNAT);
|
||||
MEMIFY (IA64_REG_UNAT, UNW_IA64_AR_UNAT);
|
||||
MEMIFY (IA64_REG_LC, UNW_IA64_AR_LC);
|
||||
MEMIFY (IA64_REG_FPSR, UNW_IA64_AR_FPSR);
|
||||
MEMIFY (IA64_REG_IP, UNW_IA64_BR + 0);
|
||||
MEMIFY (IA64_REG_B1, UNW_IA64_BR + 1);
|
||||
MEMIFY (IA64_REG_B2, UNW_IA64_BR + 2);
|
||||
MEMIFY (IA64_REG_B3, UNW_IA64_BR + 3);
|
||||
MEMIFY (IA64_REG_B4, UNW_IA64_BR + 4);
|
||||
MEMIFY (IA64_REG_B5, UNW_IA64_BR + 5);
|
||||
MEMIFY (IA64_REG_F2, UNW_IA64_FR + 2);
|
||||
MEMIFY (IA64_REG_F3, UNW_IA64_FR + 3);
|
||||
MEMIFY (IA64_REG_F4, UNW_IA64_FR + 4);
|
||||
MEMIFY (IA64_REG_F5, UNW_IA64_FR + 5);
|
||||
MEMIFY (IA64_REG_F16, UNW_IA64_FR + 16);
|
||||
MEMIFY (IA64_REG_F17, UNW_IA64_FR + 17);
|
||||
MEMIFY (IA64_REG_F18, UNW_IA64_FR + 18);
|
||||
MEMIFY (IA64_REG_F19, UNW_IA64_FR + 19);
|
||||
MEMIFY (IA64_REG_F20, UNW_IA64_FR + 20);
|
||||
MEMIFY (IA64_REG_F21, UNW_IA64_FR + 21);
|
||||
MEMIFY (IA64_REG_F22, UNW_IA64_FR + 22);
|
||||
MEMIFY (IA64_REG_F23, UNW_IA64_FR + 23);
|
||||
MEMIFY (IA64_REG_F24, UNW_IA64_FR + 24);
|
||||
MEMIFY (IA64_REG_F25, UNW_IA64_FR + 25);
|
||||
MEMIFY (IA64_REG_F26, UNW_IA64_FR + 26);
|
||||
MEMIFY (IA64_REG_F27, UNW_IA64_FR + 27);
|
||||
MEMIFY (IA64_REG_F28, UNW_IA64_FR + 28);
|
||||
MEMIFY (IA64_REG_F29, UNW_IA64_FR + 29);
|
||||
MEMIFY (IA64_REG_F30, UNW_IA64_FR + 30);
|
||||
MEMIFY (IA64_REG_F31, UNW_IA64_FR + 31);
|
||||
}
|
||||
else
|
||||
#endif /* __linux && !UNW_REMOTE_ONLY */
|
||||
{
|
||||
access_reg = c->as->acc.access_reg;
|
||||
access_fpreg = c->as->acc.access_fpreg;
|
||||
|
||||
Debug (8, "copying out cursor state\n");
|
||||
|
||||
for (reg = 0; reg < UNW_REG_LAST; ++reg)
|
||||
{
|
||||
if (unw_is_fpreg (reg))
|
||||
{
|
||||
if (tdep_access_fpreg (c, reg, &fpval, 0) >= 0)
|
||||
(*access_fpreg) (c->as, reg, &fpval, 1, c->as_arg);
|
||||
}
|
||||
else
|
||||
{
|
||||
if (tdep_access_reg (c, reg, &val, 0) >= 0)
|
||||
(*access_reg) (c->as, reg, &val, 1, c->as_arg);
|
||||
}
|
||||
}
|
||||
}
|
||||
return (*c->as->acc.resume) (c->as, (unw_cursor_t *) c, c->as_arg);
|
||||
}
|
||||
|
||||
#endif /* !UNW_LOCAL_ONLY */
|
||||
|
||||
PROTECTED int
|
||||
unw_resume (unw_cursor_t *cursor)
|
||||
{
|
||||
struct cursor *c = (struct cursor *) cursor;
|
||||
|
||||
Debug (2, "(cursor=%p)\n", c);
|
||||
|
||||
#ifdef UNW_LOCAL_ONLY
|
||||
return local_resume (c->as, cursor, c->as_arg);
|
||||
#else
|
||||
return remote_install_cursor (c);
|
||||
#endif
|
||||
}
|
||||
Loading…
Reference in a new issue