| /* libunwind - a platform-independent unwind library |
| Copyright (C) 2008 CodeSourcery |
| Copyright (C) 2012 Tommi Rantala <tt.rantala@gmail.com> |
| Copyright (C) 2013 Linaro Limited |
| |
| 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 "unwind_i.h" |
| |
| HIDDEN int |
| tdep_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp, |
| int write) |
| { |
| dwarf_loc_t loc = DWARF_NULL_LOC; |
| unsigned int mask; |
| |
| switch (reg) |
| { |
| case UNW_AARCH64_X0: |
| case UNW_AARCH64_X1: |
| case UNW_AARCH64_X2: |
| case UNW_AARCH64_X3: |
| mask = 1 << reg; |
| if (write) |
| { |
| c->dwarf.eh_args[reg] = *valp; |
| c->dwarf.eh_valid_mask |= mask; |
| return 0; |
| } |
| else if ((c->dwarf.eh_valid_mask & mask) != 0) |
| { |
| *valp = c->dwarf.eh_args[reg]; |
| return 0; |
| } |
| else |
| loc = c->dwarf.loc[reg]; |
| break; |
| |
| case UNW_AARCH64_X4: |
| case UNW_AARCH64_X5: |
| case UNW_AARCH64_X6: |
| case UNW_AARCH64_X7: |
| case UNW_AARCH64_X8: |
| case UNW_AARCH64_X9: |
| case UNW_AARCH64_X10: |
| case UNW_AARCH64_X11: |
| case UNW_AARCH64_X12: |
| case UNW_AARCH64_X13: |
| case UNW_AARCH64_X14: |
| case UNW_AARCH64_X15: |
| case UNW_AARCH64_X16: |
| case UNW_AARCH64_X17: |
| case UNW_AARCH64_X18: |
| case UNW_AARCH64_X19: |
| case UNW_AARCH64_X20: |
| case UNW_AARCH64_X21: |
| case UNW_AARCH64_X22: |
| case UNW_AARCH64_X23: |
| case UNW_AARCH64_X24: |
| case UNW_AARCH64_X25: |
| case UNW_AARCH64_X26: |
| case UNW_AARCH64_X27: |
| case UNW_AARCH64_X28: |
| case UNW_AARCH64_X29: |
| case UNW_AARCH64_X30: |
| case UNW_AARCH64_PC: |
| case UNW_AARCH64_PSTATE: |
| loc = c->dwarf.loc[reg]; |
| break; |
| |
| case UNW_AARCH64_SP: |
| if (write) |
| return -UNW_EREADONLYREG; |
| *valp = c->dwarf.cfa; |
| return 0; |
| |
| default: |
| Debug (1, "bad register number %u\n", reg); |
| return -UNW_EBADREG; |
| } |
| |
| if (write) |
| return dwarf_put (&c->dwarf, loc, *valp); |
| else |
| return dwarf_get (&c->dwarf, loc, valp); |
| } |
| |
| HIDDEN int |
| tdep_access_fpreg (struct cursor *c, unw_regnum_t reg, unw_fpreg_t *valp, |
| int write) |
| { |
| Debug (1, "bad register number %u\n", reg); |
| return -UNW_EBADREG; |
| } |