diff options
Diffstat (limited to 'src/third_party/unwind/dist/src/ia64/Gget_save_loc.c')
| -rw-r--r-- | src/third_party/unwind/dist/src/ia64/Gget_save_loc.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/src/third_party/unwind/dist/src/ia64/Gget_save_loc.c b/src/third_party/unwind/dist/src/ia64/Gget_save_loc.c new file mode 100644 index 00000000000..34efe99a752 --- /dev/null +++ b/src/third_party/unwind/dist/src/ia64/Gget_save_loc.c @@ -0,0 +1,168 @@ +/* libunwind - a platform-independent unwind library + Copyright (C) 2002-2003, 2005 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 <assert.h> + +#include "rse.h" + +#include "offsets.h" +#include "regs.h" + +int +unw_get_save_loc (unw_cursor_t *cursor, int reg, unw_save_loc_t *sloc) +{ + struct cursor *c = (struct cursor *) cursor; + ia64_loc_t loc, reg_loc; + uint8_t nat_bitnr; + int ret; + + loc = IA64_NULL_LOC; /* default to "not saved" */ + + switch (reg) + { + /* frame registers */ + case UNW_IA64_BSP: + case UNW_REG_SP: + default: + break; + + case UNW_REG_IP: + loc = c->loc[IA64_REG_IP]; + break; + + /* preserved registers: */ + case UNW_IA64_GR + 4 ... UNW_IA64_GR + 7: + loc = c->loc[IA64_REG_R4 + (reg - (UNW_IA64_GR + 4))]; + break; + + case UNW_IA64_NAT + 4 ... UNW_IA64_NAT + 7: + loc = c->loc[IA64_REG_NAT4 + (reg - (UNW_IA64_NAT + 4))]; + reg_loc = c->loc[IA64_REG_R4 + (reg - (UNW_IA64_NAT + 4))]; + nat_bitnr = c->nat_bitnr[reg - (UNW_IA64_NAT + 4)]; + if (IA64_IS_FP_LOC (reg_loc)) + /* NaT bit saved as a NaTVal. */ + loc = reg_loc; + break; + + case UNW_IA64_FR + 2: loc = c->loc[IA64_REG_F2]; break; + case UNW_IA64_FR + 3: loc = c->loc[IA64_REG_F3]; break; + case UNW_IA64_FR + 4: loc = c->loc[IA64_REG_F4]; break; + case UNW_IA64_FR + 5: loc = c->loc[IA64_REG_F5]; break; + case UNW_IA64_FR + 16 ... UNW_IA64_FR + 31: + loc = c->loc[IA64_REG_F16 + (reg - (UNW_IA64_FR + 16))]; + break; + + case UNW_IA64_AR_BSP: loc = c->loc[IA64_REG_BSP]; break; + case UNW_IA64_AR_BSPSTORE: loc = c->loc[IA64_REG_BSPSTORE]; break; + case UNW_IA64_AR_PFS: loc = c->loc[IA64_REG_PFS]; break; + case UNW_IA64_AR_RNAT: loc = c->loc[IA64_REG_RNAT]; break; + case UNW_IA64_AR_UNAT: loc = c->loc[IA64_REG_UNAT]; break; + case UNW_IA64_AR_LC: loc = c->loc[IA64_REG_LC]; break; + case UNW_IA64_AR_FPSR: loc = c->loc[IA64_REG_FPSR]; break; + case UNW_IA64_BR + 1: loc = c->loc[IA64_REG_B1]; break; + case UNW_IA64_BR + 2: loc = c->loc[IA64_REG_B2]; break; + case UNW_IA64_BR + 3: loc = c->loc[IA64_REG_B3]; break; + case UNW_IA64_BR + 4: loc = c->loc[IA64_REG_B4]; break; + case UNW_IA64_BR + 5: loc = c->loc[IA64_REG_B5]; break; + case UNW_IA64_CFM: loc = c->cfm_loc; break; + case UNW_IA64_PR: loc = c->loc[IA64_REG_PR]; break; + + case UNW_IA64_GR + 32 ... UNW_IA64_GR + 127: /* stacked reg */ + reg = rotate_gr (c, reg - UNW_IA64_GR); + ret = ia64_get_stacked (c, reg, &loc, NULL); + if (ret < 0) + return ret; + break; + + case UNW_IA64_NAT + 32 ... UNW_IA64_NAT + 127: /* stacked reg */ + reg = rotate_gr (c, reg - UNW_IA64_NAT); + ret = ia64_get_stacked (c, reg, NULL, &loc); + break; + + case UNW_IA64_AR_EC: + loc = c->cfm_loc; + break; + + /* scratch & special registers: */ + + case UNW_IA64_GR + 0: + case UNW_IA64_GR + 1: /* global pointer */ + case UNW_IA64_NAT + 0: + case UNW_IA64_NAT + 1: /* global pointer */ + case UNW_IA64_FR + 0: + case UNW_IA64_FR + 1: + break; + + case UNW_IA64_NAT + 2 ... UNW_IA64_NAT + 3: + case UNW_IA64_NAT + 8 ... UNW_IA64_NAT + 31: + loc = ia64_scratch_loc (c, reg, &nat_bitnr); + break; + + case UNW_IA64_GR + 2 ... UNW_IA64_GR + 3: + case UNW_IA64_GR + 8 ... UNW_IA64_GR + 31: + case UNW_IA64_BR + 0: + case UNW_IA64_BR + 6: + case UNW_IA64_BR + 7: + case UNW_IA64_AR_RSC: + case UNW_IA64_AR_CSD: + case UNW_IA64_AR_SSD: + case UNW_IA64_AR_CCV: + loc = ia64_scratch_loc (c, reg, NULL); + break; + + case UNW_IA64_FR + 6 ... UNW_IA64_FR + 15: + loc = ia64_scratch_loc (c, reg, NULL); + break; + + case UNW_IA64_FR + 32 ... UNW_IA64_FR + 127: + reg = rotate_fr (c, reg - UNW_IA64_FR) + UNW_IA64_FR; + loc = ia64_scratch_loc (c, reg, NULL); + break; + } + + memset (sloc, 0, sizeof (*sloc)); + + if (IA64_IS_NULL_LOC (loc)) + { + sloc->type = UNW_SLT_NONE; + return 0; + } + +#if !defined(UNW_LOCAL_ONLY) + if (IA64_IS_REG_LOC (loc)) + { + sloc->type = UNW_SLT_REG; + sloc->u.regnum = IA64_GET_REG (loc); + sloc->extra.nat_bitnr = nat_bitnr; + } + else +#endif + { + sloc->type = UNW_SLT_MEMORY; + sloc->u.addr = IA64_GET_ADDR (loc); + sloc->extra.nat_bitnr = nat_bitnr; + } + return 0; +} |