| /* libunwind - a platform-independent unwind library |
| Copyright (C) 2002 Hewlett-Packard Co |
| Contributed by David Mosberger-Tang <davidm@hpl.hp.com> |
| |
| Modified for x86_64 by Max Asbock <masbock@us.ibm.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 "unwind_i.h" |
| |
| /* Avoid a trip to x86_64_r_uc_addr() for purely local initialisation. */ |
| #if defined UNW_LOCAL_ONLY && defined __linux |
| # define REG_INIT_LOC(c, rlc, ruc) \ |
| DWARF_LOC ((unw_word_t) &c->uc->uc_mcontext.gregs[REG_ ## ruc], 0) |
| |
| #elif defined UNW_LOCAL_ONLY && defined __FreeBSD__ |
| # define REG_INIT_LOC(c, rlc, ruc) \ |
| DWARF_LOC ((unw_word_t) &c->uc->uc_mcontext.mc_ ## rlc, 0) |
| |
| #else |
| # define REG_INIT_LOC(c, rlc, ruc) \ |
| DWARF_REG_LOC (&c->dwarf, UNW_X86_64_ ## ruc) |
| #endif |
| |
| static inline int |
| common_init (struct cursor *c, unsigned use_prev_instr) |
| { |
| int ret; |
| |
| c->dwarf.loc[RAX] = REG_INIT_LOC(c, rax, RAX); |
| c->dwarf.loc[RDX] = REG_INIT_LOC(c, rdx, RDX); |
| c->dwarf.loc[RCX] = REG_INIT_LOC(c, rcx, RCX); |
| c->dwarf.loc[RBX] = REG_INIT_LOC(c, rbx, RBX); |
| c->dwarf.loc[RSI] = REG_INIT_LOC(c, rsi, RSI); |
| c->dwarf.loc[RDI] = REG_INIT_LOC(c, rdi, RDI); |
| c->dwarf.loc[RBP] = REG_INIT_LOC(c, rbp, RBP); |
| c->dwarf.loc[RSP] = REG_INIT_LOC(c, rsp, RSP); |
| c->dwarf.loc[R8] = REG_INIT_LOC(c, r8, R8); |
| c->dwarf.loc[R9] = REG_INIT_LOC(c, r9, R9); |
| c->dwarf.loc[R10] = REG_INIT_LOC(c, r10, R10); |
| c->dwarf.loc[R11] = REG_INIT_LOC(c, r11, R11); |
| c->dwarf.loc[R12] = REG_INIT_LOC(c, r12, R12); |
| c->dwarf.loc[R13] = REG_INIT_LOC(c, r13, R13); |
| c->dwarf.loc[R14] = REG_INIT_LOC(c, r14, R14); |
| c->dwarf.loc[R15] = REG_INIT_LOC(c, r15, R15); |
| c->dwarf.loc[RIP] = REG_INIT_LOC(c, rip, RIP); |
| |
| ret = dwarf_get (&c->dwarf, c->dwarf.loc[RIP], &c->dwarf.ip); |
| if (ret < 0) |
| return ret; |
| |
| ret = dwarf_get (&c->dwarf, DWARF_REG_LOC (&c->dwarf, UNW_X86_64_RSP), |
| &c->dwarf.cfa); |
| if (ret < 0) |
| return ret; |
| |
| c->sigcontext_format = X86_64_SCF_NONE; |
| c->sigcontext_addr = 0; |
| |
| c->dwarf.args_size = 0; |
| c->dwarf.ret_addr_column = RIP; |
| c->dwarf.stash_frames = 0; |
| c->dwarf.use_prev_instr = use_prev_instr; |
| c->dwarf.pi_valid = 0; |
| c->dwarf.pi_is_dynamic = 0; |
| c->dwarf.hint = 0; |
| c->dwarf.prev_rs = 0; |
| /* ANDROID support update. */ |
| c->dwarf.frame = 0; |
| /* End of ANDROID update. */ |
| |
| return 0; |
| } |