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Rename: src/ia64/Gget_save_loc-ia64.c -> src/ia64/Gget_save_loc.c
(Logical change 1.241)
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homeip.net!davidm
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1 changed files with 168 additions and 0 deletions
168
src/ia64/Gget_save_loc.c
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src/ia64/Gget_save_loc.c
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/* libunwind - a platform-independent unwind library
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Copyright (C) 2002-2003 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 <assert.h>
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#include "ia64/rse.h"
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#include "offsets.h"
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#include "regs.h"
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PROTECTED int
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unw_get_save_loc (unw_cursor_t *cursor, int reg, unw_save_loc_t *sloc)
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{
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struct cursor *c = (struct cursor *) cursor;
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ia64_loc_t loc, reg_loc;
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uint8_t nat_bitnr;
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int ret;
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loc = IA64_NULL_LOC; /* default to "not saved" */
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switch (reg)
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{
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/* frame registers */
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case UNW_IA64_BSP:
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case UNW_REG_SP:
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default:
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break;
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case UNW_REG_IP:
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loc = c->loc[IA64_REG_IP];
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break;
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/* preserved registers: */
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case UNW_IA64_GR + 4 ... UNW_IA64_GR + 7:
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loc = c->loc[IA64_REG_R4 + (reg - (UNW_IA64_GR + 4))];
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break;
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case UNW_IA64_NAT + 4 ... UNW_IA64_NAT + 7:
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loc = c->loc[IA64_REG_NAT4 + (reg - (UNW_IA64_NAT + 4))];
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reg_loc = c->loc[IA64_REG_R4 + (reg - (UNW_IA64_NAT + 4))];
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nat_bitnr = c->nat_bitnr[reg - (UNW_IA64_NAT + 4)];
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if (IA64_IS_FP_LOC (reg_loc))
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/* NaT bit saved as a NaTVal. */
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loc = reg_loc;
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break;
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case UNW_IA64_FR + 2: loc = c->loc[IA64_REG_F2]; break;
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case UNW_IA64_FR + 3: loc = c->loc[IA64_REG_F3]; break;
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case UNW_IA64_FR + 4: loc = c->loc[IA64_REG_F4]; break;
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case UNW_IA64_FR + 5: loc = c->loc[IA64_REG_F5]; break;
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case UNW_IA64_FR + 16 ... UNW_IA64_FR + 31:
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loc = c->loc[IA64_REG_F16 + (reg - (UNW_IA64_FR + 16))];
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break;
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case UNW_IA64_AR_BSP: loc = c->loc[IA64_REG_BSP]; break;
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case UNW_IA64_AR_BSPSTORE: loc = c->loc[IA64_REG_BSPSTORE]; break;
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case UNW_IA64_AR_PFS: loc = c->loc[IA64_REG_PFS]; break;
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case UNW_IA64_AR_RNAT: loc = c->loc[IA64_REG_RNAT]; break;
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case UNW_IA64_AR_UNAT: loc = c->loc[IA64_REG_UNAT]; break;
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case UNW_IA64_AR_LC: loc = c->loc[IA64_REG_LC]; break;
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case UNW_IA64_AR_FPSR: loc = c->loc[IA64_REG_FPSR]; break;
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case UNW_IA64_BR + 1: loc = c->loc[IA64_REG_B1]; break;
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case UNW_IA64_BR + 2: loc = c->loc[IA64_REG_B2]; break;
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case UNW_IA64_BR + 3: loc = c->loc[IA64_REG_B3]; break;
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case UNW_IA64_BR + 4: loc = c->loc[IA64_REG_B4]; break;
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case UNW_IA64_BR + 5: loc = c->loc[IA64_REG_B5]; break;
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case UNW_IA64_CFM: loc = c->cfm_loc; break;
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case UNW_IA64_PR: loc = c->loc[IA64_REG_PR]; break;
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case UNW_IA64_GR + 32 ... UNW_IA64_GR + 127: /* stacked reg */
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reg = rotate_gr (c, reg - UNW_IA64_GR);
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ret = ia64_get_stacked (c, reg, &loc, NULL);
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if (ret < 0)
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return ret;
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break;
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case UNW_IA64_NAT + 32 ... UNW_IA64_NAT + 127: /* stacked reg */
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reg = rotate_gr (c, reg - UNW_IA64_NAT);
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ret = ia64_get_stacked (c, reg, NULL, &loc);
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break;
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case UNW_IA64_AR_EC:
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loc = c->cfm_loc;
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break;
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/* scratch & special registers: */
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case UNW_IA64_GR + 0:
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case UNW_IA64_GR + 1: /* global pointer */
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case UNW_IA64_NAT + 0:
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case UNW_IA64_NAT + 1: /* global pointer */
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case UNW_IA64_FR + 0:
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case UNW_IA64_FR + 1:
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break;
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case UNW_IA64_NAT + 2 ... UNW_IA64_NAT + 3:
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case UNW_IA64_NAT + 8 ... UNW_IA64_NAT + 31:
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loc = ia64_scratch_loc (c, reg, &nat_bitnr);
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break;
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case UNW_IA64_GR + 2 ... UNW_IA64_GR + 3:
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case UNW_IA64_GR + 8 ... UNW_IA64_GR + 31:
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case UNW_IA64_BR + 0:
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case UNW_IA64_BR + 6:
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case UNW_IA64_BR + 7:
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case UNW_IA64_AR_RSC:
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case UNW_IA64_AR_CSD:
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case UNW_IA64_AR_SSD:
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case UNW_IA64_AR_CCV:
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loc = ia64_scratch_loc (c, reg, NULL);
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break;
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case UNW_IA64_FR + 6 ... UNW_IA64_FR + 15:
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loc = ia64_scratch_loc (c, reg, NULL);
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break;
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case UNW_IA64_FR + 32 ... UNW_IA64_FR + 127:
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reg = rotate_fr (c, reg - UNW_IA64_FR) + UNW_IA64_FR;
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loc = ia64_scratch_loc (c, reg, NULL);
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break;
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}
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memset (sloc, 0, sizeof (sloc));
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if (IA64_IS_NULL_LOC (loc))
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{
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sloc->type = UNW_SLT_NONE;
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return 0;
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}
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#if !defined(UNW_LOCAL_ONLY)
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if (IA64_IS_REG_LOC (loc))
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{
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sloc->type = UNW_SLT_REG;
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sloc->u.regnum = IA64_GET_REG (loc);
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sloc->extra.nat_bitnr = nat_bitnr;
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}
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else
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#endif
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{
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sloc->type = UNW_SLT_MEMORY;
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sloc->u.addr = IA64_GET_ADDR (loc);
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sloc->extra.nat_bitnr = nat_bitnr;
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}
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return 0;
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}
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