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87 lines
2.7 KiB
C
87 lines
2.7 KiB
C
/* libunwind - a platform-independent unwind library
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Copyright (C) 2004 Hewlett-Packard Co
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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This file is part of libunwind.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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#include "unwind_i.h"
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HIDDEN int
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tdep_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp,
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int write)
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{
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struct dwarf_loc loc;
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switch (reg)
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{
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case UNW_HPPA_IP:
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if (write)
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c->dwarf.ip = *valp; /* update the IP cache */
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if (c->dwarf.pi_valid && (*valp < c->dwarf.pi.start_ip
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|| *valp >= c->dwarf.pi.end_ip))
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c->dwarf.pi_valid = 0; /* new IP outside of current proc */
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break;
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case UNW_HPPA_CFA:
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case UNW_HPPA_SP:
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if (write)
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return -UNW_EREADONLYREG;
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*valp = c->dwarf.cfa;
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return 0;
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/* Do the exception-handling register remapping: */
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case UNW_HPPA_EH0: reg = UNW_HPPA_GR + 20; break;
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case UNW_HPPA_EH1: reg = UNW_HPPA_GR + 21; break;
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case UNW_HPPA_EH2: reg = UNW_HPPA_GR + 22; break;
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case UNW_HPPA_EH3: reg = UNW_HPPA_GR + 31; break;
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default:
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break;
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}
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if ((unsigned) (reg - UNW_HPPA_GR) >= 32)
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return -UNW_EBADREG;
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loc = c->dwarf.loc[reg];
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if (write)
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return dwarf_put (&c->dwarf, loc, *valp);
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else
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return dwarf_get (&c->dwarf, loc, valp);
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}
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HIDDEN int
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tdep_access_fpreg (struct cursor *c, unw_regnum_t reg, unw_fpreg_t *valp,
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int write)
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{
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struct dwarf_loc loc;
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if ((unsigned) (reg - UNW_HPPA_FR) >= 32)
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return -UNW_EBADREG;
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loc = c->dwarf.loc[reg];
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if (write)
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return dwarf_putfp (&c->dwarf, loc, *valp);
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else
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return dwarf_getfp (&c->dwarf, loc, valp);
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}
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