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Rename: src/x86/Ginit-x86.c -> src/x86/Ginit.c
(Logical change 1.241)
This commit is contained in:
homeip.net!davidm
parent
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commit
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1 changed files with 209 additions and 0 deletions
209
src/x86/Ginit.c
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src/x86/Ginit.c
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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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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 <stdlib.h>
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#include <string.h>
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#include "unwind_i.h"
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#ifdef UNW_REMOTE_ONLY
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/* unw_local_addr_space is a NULL pointer in this case. */
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PROTECTED unw_addr_space_t unw_local_addr_space;
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#else /* !UNW_REMOTE_ONLY */
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static struct unw_addr_space local_addr_space;
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PROTECTED unw_addr_space_t unw_local_addr_space = &local_addr_space;
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static inline void *
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uc_addr (ucontext_t *uc, int reg)
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{
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void *addr;
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switch (reg)
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{
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case UNW_X86_GS: addr = &uc->uc_mcontext.gregs[REG_GS]; break;
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case UNW_X86_FS: addr = &uc->uc_mcontext.gregs[REG_FS]; break;
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case UNW_X86_ES: addr = &uc->uc_mcontext.gregs[REG_ES]; break;
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case UNW_X86_DS: addr = &uc->uc_mcontext.gregs[REG_DS]; break;
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case UNW_X86_EAX: addr = &uc->uc_mcontext.gregs[REG_EAX]; break;
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case UNW_X86_EBX: addr = &uc->uc_mcontext.gregs[REG_EBX]; break;
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case UNW_X86_ECX: addr = &uc->uc_mcontext.gregs[REG_ECX]; break;
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case UNW_X86_EDX: addr = &uc->uc_mcontext.gregs[REG_EDX]; break;
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case UNW_X86_ESI: addr = &uc->uc_mcontext.gregs[REG_ESI]; break;
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case UNW_X86_EDI: addr = &uc->uc_mcontext.gregs[REG_EDI]; break;
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case UNW_X86_EBP: addr = &uc->uc_mcontext.gregs[REG_EBP]; break;
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case UNW_X86_EIP: addr = &uc->uc_mcontext.gregs[REG_EIP]; break;
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case UNW_X86_ESP: addr = &uc->uc_mcontext.gregs[REG_ESP]; break;
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case UNW_X86_TRAPNO: addr = &uc->uc_mcontext.gregs[REG_TRAPNO]; break;
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case UNW_X86_CS: addr = &uc->uc_mcontext.gregs[REG_CS]; break;
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case UNW_X86_EFLAGS: addr = &uc->uc_mcontext.gregs[REG_EFL]; break;
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case UNW_X86_SS: addr = &uc->uc_mcontext.gregs[REG_SS]; break;
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default:
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addr = NULL;
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}
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return addr;
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}
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# ifdef UNW_LOCAL_ONLY
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HIDDEN void *
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tdep_uc_addr (ucontext_t *uc, int reg)
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{
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return uc_addr (uc, reg);
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}
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# endif /* UNW_LOCAL_ONLY */
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HIDDEN unw_dyn_info_list_t _U_dyn_info_list;
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/* XXX fix me: there is currently no way to locate the dyn-info list
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by a remote unwinder. On ia64, this is done via a special
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unwind-table entry. Perhaps something similar can be done with
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DWARF2 unwind info. */
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static void
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put_unwind_info (unw_addr_space_t as, unw_proc_info_t *proc_info, void *arg)
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{
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/* it's a no-op */
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}
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static int
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get_dyn_info_list_addr (unw_addr_space_t as, unw_word_t *dyn_info_list_addr,
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void *arg)
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{
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*dyn_info_list_addr = (unw_word_t) &_U_dyn_info_list;
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return 0;
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}
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static int
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access_mem (unw_addr_space_t as, unw_word_t addr, unw_word_t *val, int write,
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void *arg)
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{
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if (write)
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{
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Debug (16, "mem[%x] <- %x\n", addr, *val);
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*(unw_word_t *) addr = *val;
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}
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else
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{
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*val = *(unw_word_t *) addr;
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Debug (16, "mem[%x] -> %x\n", addr, *val);
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}
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return 0;
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}
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static int
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access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val, int write,
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void *arg)
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{
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unw_word_t *addr;
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ucontext_t *uc = arg;
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if (unw_is_fpreg (reg))
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goto badreg;
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Debug (16, "reg = %s\n", unw_regname (reg));
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if (!(addr = uc_addr (uc, reg)))
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goto badreg;
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if (write)
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{
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*(unw_word_t *) addr = *val;
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Debug (12, "%s <- %x\n", unw_regname (reg), *val);
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}
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else
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{
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*val = *(unw_word_t *) addr;
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Debug (12, "%s -> %x\n", unw_regname (reg), *val);
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}
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return 0;
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badreg:
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Debug (1, "bad register number %u\n", reg);
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return -UNW_EBADREG;
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}
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static int
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access_fpreg (unw_addr_space_t as, unw_regnum_t reg, unw_fpreg_t *val,
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int write, void *arg)
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{
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ucontext_t *uc = arg;
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unw_fpreg_t *addr;
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if (!unw_is_fpreg (reg))
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goto badreg;
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if (!(addr = uc_addr (uc, reg)))
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goto badreg;
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if (write)
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{
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Debug (12, "%s <- %08lx.%08lx.%08lx\n", unw_regname (reg),
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((long *)val)[0], ((long *)val)[1], ((long *)val)[2]);
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*(unw_fpreg_t *) addr = *val;
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}
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else
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{
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*val = *(unw_fpreg_t *) addr;
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Debug (12, "%s -> %08lx.%08lx.%08lx\n", unw_regname (reg),
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((long *)val)[0], ((long *)val)[1], ((long *)val)[2]);
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}
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return 0;
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badreg:
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Debug (1, "bad register number %u\n", reg);
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/* attempt to access a non-preserved register */
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return -UNW_EBADREG;
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}
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static int
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get_static_proc_name (unw_addr_space_t as, unw_word_t ip,
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char *buf, size_t buf_len, unw_word_t *offp,
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void *arg)
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{
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return _Uelf32_get_proc_name (getpid (), ip, buf, buf_len, offp);
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}
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HIDDEN void
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x86_local_addr_space_init (void)
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{
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memset (&local_addr_space, 0, sizeof (local_addr_space));
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local_addr_space.caching_policy = UNW_CACHE_GLOBAL;
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local_addr_space.acc.find_proc_info = dwarf_find_proc_info;
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local_addr_space.acc.put_unwind_info = put_unwind_info;
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local_addr_space.acc.get_dyn_info_list_addr = get_dyn_info_list_addr;
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local_addr_space.acc.access_mem = access_mem;
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local_addr_space.acc.access_reg = access_reg;
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local_addr_space.acc.access_fpreg = access_fpreg;
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local_addr_space.acc.resume = x86_local_resume;
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local_addr_space.acc.get_proc_name = get_static_proc_name;
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unw_flush_cache (&local_addr_space, 0, 0);
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}
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#endif /* !UNW_REMOTE_ONLY */
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