2004-08-19 15:39:10 +02:00
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/* libunwind - a platform-independent unwind library
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Copyright (C) 2002 Hewlett-Packard Co
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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Modified for x86_64 by Max Asbock <masbock@us.ibm.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 "unwind_i.h"
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2011-04-18 05:33:09 +02:00
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/* Avoid a trip to x86_64_r_uc_addr() for purely local initialisation. */
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#if defined UNW_LOCAL_ONLY && defined __linux
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# define REG_INIT_LOC(c, rlc, ruc) \
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DWARF_LOC ((unw_word_t) &c->uc->uc_mcontext.gregs[REG_ ## ruc], 0)
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#elif defined UNW_LOCAL_ONLY && defined __FreeBSD__
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# define REG_INIT_LOC(c, rlc, ruc) \
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DWARF_LOC ((unw_word_t) &c->uc->uc_mcontext.mc_ ## rlc, 0)
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#else
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# define REG_INIT_LOC(c, rlc, ruc) \
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DWARF_REG_LOC (&c->dwarf, UNW_X86_64_ ## ruc)
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#endif
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2004-08-19 15:39:10 +02:00
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static inline int
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2010-04-25 04:16:09 +02:00
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common_init (struct cursor *c, unsigned use_prev_instr)
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2004-08-19 15:39:10 +02:00
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{
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int ret;
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2011-04-18 05:33:09 +02:00
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c->dwarf.loc[RAX] = REG_INIT_LOC(c, rax, RAX);
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c->dwarf.loc[RDX] = REG_INIT_LOC(c, rdx, RDX);
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c->dwarf.loc[RCX] = REG_INIT_LOC(c, rcx, RCX);
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c->dwarf.loc[RBX] = REG_INIT_LOC(c, rbx, RBX);
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c->dwarf.loc[RSI] = REG_INIT_LOC(c, rsi, RSI);
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c->dwarf.loc[RDI] = REG_INIT_LOC(c, rdi, RDI);
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c->dwarf.loc[RBP] = REG_INIT_LOC(c, rbp, RBP);
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c->dwarf.loc[RSP] = REG_INIT_LOC(c, rsp, RSP);
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c->dwarf.loc[R8] = REG_INIT_LOC(c, r8, R8);
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c->dwarf.loc[R9] = REG_INIT_LOC(c, r9, R9);
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c->dwarf.loc[R10] = REG_INIT_LOC(c, r10, R10);
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c->dwarf.loc[R11] = REG_INIT_LOC(c, r11, R11);
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c->dwarf.loc[R12] = REG_INIT_LOC(c, r12, R12);
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c->dwarf.loc[R13] = REG_INIT_LOC(c, r13, R13);
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c->dwarf.loc[R14] = REG_INIT_LOC(c, r14, R14);
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c->dwarf.loc[R15] = REG_INIT_LOC(c, r15, R15);
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c->dwarf.loc[RIP] = REG_INIT_LOC(c, rip, RIP);
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2004-08-19 15:39:10 +02:00
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ret = dwarf_get (&c->dwarf, c->dwarf.loc[RIP], &c->dwarf.ip);
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if (ret < 0)
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return ret;
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ret = dwarf_get (&c->dwarf, DWARF_REG_LOC (&c->dwarf, UNW_X86_64_RSP),
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&c->dwarf.cfa);
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if (ret < 0)
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return ret;
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2005-05-03 11:13:17 +02:00
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c->sigcontext_format = X86_64_SCF_NONE;
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c->sigcontext_addr = 0;
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c->dwarf.args_size = 0;
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2006-07-27 05:18:49 +02:00
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c->dwarf.ret_addr_column = RIP;
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2011-03-19 10:00:48 +01:00
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c->dwarf.stash_frames = 0;
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2010-04-25 04:16:09 +02:00
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c->dwarf.use_prev_instr = use_prev_instr;
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2005-05-03 11:13:17 +02:00
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c->dwarf.pi_valid = 0;
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c->dwarf.pi_is_dynamic = 0;
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2006-07-27 05:18:49 +02:00
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c->dwarf.hint = 0;
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c->dwarf.prev_rs = 0;
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2004-08-19 15:39:10 +02:00
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return 0;
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}
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