diff options
Diffstat (limited to 'src/third_party/unwind/dist/src/aarch64/Gregs.c')
-rw-r--r-- | src/third_party/unwind/dist/src/aarch64/Gregs.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/src/third_party/unwind/dist/src/aarch64/Gregs.c b/src/third_party/unwind/dist/src/aarch64/Gregs.c new file mode 100644 index 00000000000..a8843734459 --- /dev/null +++ b/src/third_party/unwind/dist/src/aarch64/Gregs.c @@ -0,0 +1,118 @@ +/* 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_X30: + if (write) + c->dwarf.ip = *valp; /* update the IP cache */ + 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_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) +{ + dwarf_loc_t loc = c->dwarf.loc[reg]; + if (write) + return dwarf_putfp (&c->dwarf, loc, *valp); + else + return dwarf_getfp (&c->dwarf, loc, valp); +} |