* Makefile.in (ALLDEPFILES): Add alpha-osf1-tdep.c.
(alpha-osf1-tdep.o): New dependency list. * alpha-tdep.h (gdbarch_tdep): Add dynamic_sigtramp_offset and skip_sigtramp_frame members. * alpha-linux-tdep.c: Include gdbcore.h. (alpha_linux_sigtramp_offset): Change return type to LONGEST. (alpha_linux_init_abi): Initialize tdep->dynamic_sigtramp_offset. * alpha-osf1-tdep.c: New file. * alpha-tdep.c (alpha_osf_skip_sigtramp_frame): Moved to alpha-osf1-dep.c. (alpha_frame_past_sigtramp_frame): New function. (alpha_dynamic_sigtramp_offset): Ditto. (alpha_proc_desc_is_dyn_sigtramp): Ditto. (alpha_set_proc_desc_is_dyn_sigtramp): Ditto. (ALPHA_PROC_SIGTRAMP_MAGIC): Define. (push_sigtramp_desc): Use alpha_set_proc_desc_is_dyn_sigtramp. (after_prologue): Use alpha_proc_desc_is_dyn_sigtramp. (find_proc_desc): Use alpha_dynamic_sigtramp_offset. (alpha_frame_chain): Use alpha_frame_past_sigtramp_frame. (alpha_init_extra_frame_info): Use alpha_proc_desc_is_dyn_sigtramp. (alpha_pop_frame): Use alpha_proc_desc_is_dyn_sigtramp. (alpha_gdbarch_init): Initialize tdep->dynamic_sigtramp_offset and tdep->skip_sigtramp_frame. Set gdbarch_skip_trampoline_code to find_solib_trampoline_target. * config/alpha/alpha-osf1.mt (TDEPFILES): Add alpha-osf1-tdep.o. * config/alpha/tm-alpha.h: Remove inclusion of regcache.h. (SKIP_TRAMPOLINE_CODE): Remove. (PROC_DESC_IS_DYN_SIGTRAMP): Ditto. (SET_PROC_DESC_IS_DYN_SIGTRAMP): Ditto. (DYNAMIC_SIGTRAMP_OFFSET): Ditto. (FRAME_PAST_SIGTRAMP_FRAME): Ditto. * config/alpha/tm-alphalinux.h (PROC_DESC_IS_DYN_SIGTRAMP): Remove. (PROC_SIGTRAMP_MAGIC): Ditto. (PROC_DESC_IS_DYN_SIGTRAMP): Ditto. (SET_PROC_DESC_IS_DYN_SIGTRAMP): Ditto. (SET_PROC_DESC_IS_DYN_SIGTRAMP): Ditto. (DYNAMIC_SIGTRAMP_OFFSET): Ditto. (FRAME_PAST_SIGTRAMP_FRAME): Ditto.
This commit is contained in:
Jason Thorpe
parent
2f4bc57b95
commit
36a6271d5e
9 changed files with 172 additions and 87 deletions
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@ -1,3 +1,44 @@
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2002-04-24 Jason Thorpe <thorpej@wasabisystems.com>
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* Makefile.in (ALLDEPFILES): Add alpha-osf1-tdep.c.
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(alpha-osf1-tdep.o): New dependency list.
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* alpha-tdep.h (gdbarch_tdep): Add dynamic_sigtramp_offset
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and skip_sigtramp_frame members.
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* alpha-linux-tdep.c: Include gdbcore.h.
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(alpha_linux_sigtramp_offset): Change return type to LONGEST.
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(alpha_linux_init_abi): Initialize tdep->dynamic_sigtramp_offset.
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* alpha-osf1-tdep.c: New file.
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* alpha-tdep.c (alpha_osf_skip_sigtramp_frame): Moved to
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alpha-osf1-dep.c.
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(alpha_frame_past_sigtramp_frame): New function.
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(alpha_dynamic_sigtramp_offset): Ditto.
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(alpha_proc_desc_is_dyn_sigtramp): Ditto.
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(alpha_set_proc_desc_is_dyn_sigtramp): Ditto.
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(ALPHA_PROC_SIGTRAMP_MAGIC): Define.
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(push_sigtramp_desc): Use alpha_set_proc_desc_is_dyn_sigtramp.
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(after_prologue): Use alpha_proc_desc_is_dyn_sigtramp.
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(find_proc_desc): Use alpha_dynamic_sigtramp_offset.
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(alpha_frame_chain): Use alpha_frame_past_sigtramp_frame.
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(alpha_init_extra_frame_info): Use alpha_proc_desc_is_dyn_sigtramp.
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(alpha_pop_frame): Use alpha_proc_desc_is_dyn_sigtramp.
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(alpha_gdbarch_init): Initialize tdep->dynamic_sigtramp_offset
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and tdep->skip_sigtramp_frame. Set gdbarch_skip_trampoline_code
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to find_solib_trampoline_target.
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* config/alpha/alpha-osf1.mt (TDEPFILES): Add alpha-osf1-tdep.o.
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* config/alpha/tm-alpha.h: Remove inclusion of regcache.h.
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(SKIP_TRAMPOLINE_CODE): Remove.
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(PROC_DESC_IS_DYN_SIGTRAMP): Ditto.
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(SET_PROC_DESC_IS_DYN_SIGTRAMP): Ditto.
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(DYNAMIC_SIGTRAMP_OFFSET): Ditto.
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(FRAME_PAST_SIGTRAMP_FRAME): Ditto.
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* config/alpha/tm-alphalinux.h (PROC_DESC_IS_DYN_SIGTRAMP): Remove.
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(PROC_SIGTRAMP_MAGIC): Ditto.
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(PROC_DESC_IS_DYN_SIGTRAMP): Ditto.
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(SET_PROC_DESC_IS_DYN_SIGTRAMP): Ditto.
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(SET_PROC_DESC_IS_DYN_SIGTRAMP): Ditto.
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(DYNAMIC_SIGTRAMP_OFFSET): Ditto.
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(FRAME_PAST_SIGTRAMP_FRAME): Ditto.
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2002-04-24 Jason Thorpe <thorpej@wasabisystems.com>
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* NEWS: Note that Alpha targets are now multi-arch.
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@ -1178,8 +1178,8 @@ unexport CHILLFLAGS CHILL_LIB CHILL_FOR_TARGET :
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ALLDEPFILES = 29k-share/udi/udip2soc.c 29k-share/udi/udr.c \
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29k-share/udi/udi2go32.c \
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a29k-tdep.c a68v-nat.c \
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alpha-nat.c alphabsd-nat.c alpha-tdep.c alpha-linux-tdep.c \
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alphafbsd-tdep.c \
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alpha-nat.c alphabsd-nat.c alpha-tdep.c \
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alpha-linux-tdep.c alpha-osf1-tdep.c alphafbsd-tdep.c \
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arm-linux-nat.c arm-linux-tdep.c arm-tdep.c \
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armnbsd-nat.c armnbsd-tdep.c \
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coff-solib.c \
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@ -1255,6 +1255,8 @@ alpha-tdep.o: alpha-tdep.c $(defs_h) $(gdbcmd_h) $(gdbcore_h) \
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alpha-linux-tdep.o: alpha-linux-tdep.c $(defs_h) $(value_h) alpha-tdep.h
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alpha-osf1-tdep.o: alpha-osf1-tdep.c $(defs_h) $(value_h) alpha-tdep.h
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alphafbsd-tdep.o: alphafbsd-tdep.c $(defs_h) $(value_h) alpha-tdep.h
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annotate.o: annotate.c $(defs_h) $(annotate_h) $(value_h) $(target_h) $(gdbtypes_h)
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@ -19,6 +19,7 @@
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "gdbcore.h"
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#include "value.h"
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#include "alpha-tdep.h"
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@ -45,7 +46,7 @@
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middle of the designated sequence, in which case there is no
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guarantee that we are in the middle of a sigreturn syscall. Don't
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think this will be a problem in praxis, though. */
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long
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LONGEST
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alpha_linux_sigtramp_offset (CORE_ADDR pc)
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{
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unsigned int i[3], w;
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@ -88,7 +89,9 @@ static void
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alpha_linux_init_abi (struct gdbarch_info info,
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struct gdbarch *gdbarch)
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{
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/* Place holder. */
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struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
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tdep->dynamic_sigtramp_offset = alpha_linux_sigtramp_offset;
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}
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void
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53
gdb/alpha-osf1-tdep.c
Normal file
53
gdb/alpha-osf1-tdep.c
Normal file
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@ -0,0 +1,53 @@
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/* Target-dependent code for OSF/1 on Alpha.
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Copyright 2002 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "frame.h"
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#include "value.h"
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#include "alpha-tdep.h"
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/* Under OSF/1, the __sigtramp routine is frameless and has a frame
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size of zero, but we are able to backtrace through it. */
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static CORE_ADDR
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alpha_osf1_skip_sigtramp_frame (struct frame_info *frame, CORE_ADDR pc)
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{
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char *name;
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find_pc_partial_function (pc, &name, (CORE_ADDR *) NULL, (CORE_ADDR *) NULL);
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if (PC_IN_SIGTRAMP (pc, name))
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return frame->frame;
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return 0;
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}
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static void
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alpha_osf1_init_abi (struct gdbarch_info info,
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struct gdbarch *gdbarch)
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{
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struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
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tdep->skip_sigtramp_frame = alpha_osf1_skip_sigtramp_frame;
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}
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void
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_initialize_alpha_osf1_tdep (void)
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{
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alpha_gdbarch_register_os_abi (ALPHA_ABI_OSF1, alpha_osf1_init_abi);
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}
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@ -167,8 +167,6 @@ static unsigned int heuristic_fence_post = 0;
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*/
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/* *INDENT-ON* */
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#define PROC_LOW_ADDR(proc) ((proc)->pdr.adr) /* least address */
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/* These next two fields are kind of being hijacked. I wonder if
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iline is too small for the values it needs to hold, if GDB is
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@ -201,19 +199,53 @@ alpha_osf_in_sigtramp (CORE_ADDR pc, char *func_name)
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return (func_name != NULL && STREQ ("__sigtramp", func_name));
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}
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/* Under OSF/1, the __sigtramp routine is frameless and has a frame
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size of zero, but we are able to backtrace through it. */
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CORE_ADDR
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alpha_osf_skip_sigtramp_frame (struct frame_info *frame, CORE_ADDR pc)
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static CORE_ADDR
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alpha_frame_past_sigtramp_frame (struct frame_info *frame, CORE_ADDR pc)
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{
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char *name;
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find_pc_partial_function (pc, &name, (CORE_ADDR *) NULL, (CORE_ADDR *) NULL);
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if (PC_IN_SIGTRAMP (pc, name))
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return frame->frame;
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else
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return 0;
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struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
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if (tdep->skip_sigtramp_frame != NULL)
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return (tdep->skip_sigtramp_frame (frame, pc));
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return (0);
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}
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static LONGEST
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alpha_dynamic_sigtramp_offset (CORE_ADDR pc)
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{
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struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
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/* Must be provided by OS/ABI variant code if supported. */
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if (tdep->dynamic_sigtramp_offset != NULL)
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return (tdep->dynamic_sigtramp_offset (pc));
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return (-1);
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}
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#define ALPHA_PROC_SIGTRAMP_MAGIC 0x0e0f0f0f
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/* Return TRUE if the procedure descriptor PROC is a procedure
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descriptor that refers to a dynamically generated signal
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trampoline routine. */
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static int
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alpha_proc_desc_is_dyn_sigtramp (struct alpha_extra_func_info *proc)
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{
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struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
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if (tdep->dynamic_sigtramp_offset != NULL)
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return (proc->pdr.isym == ALPHA_PROC_SIGTRAMP_MAGIC);
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return (0);
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}
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static void
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alpha_set_proc_desc_is_dyn_sigtramp (struct alpha_extra_func_info *proc)
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{
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struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
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if (tdep->dynamic_sigtramp_offset != NULL)
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proc->pdr.isym = ALPHA_PROC_SIGTRAMP_MAGIC;
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}
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/* Dynamically create a signal-handler caller procedure descriptor for
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the signal-handler return code starting at address LOW_ADDR. The
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@ -242,7 +274,7 @@ push_sigtramp_desc (CORE_ADDR low_addr)
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PROC_FREG_MASK (proc_desc) = 0xffff;
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PROC_PC_REG (proc_desc) = 26;
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PROC_LOCALOFF (proc_desc) = 0;
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SET_PROC_DESC_IS_DYN_SIGTRAMP (proc_desc);
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alpha_set_proc_desc_is_dyn_sigtramp (proc_desc);
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return (proc_desc);
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}
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@ -734,7 +766,7 @@ after_prologue (CORE_ADDR pc, alpha_extra_func_info_t proc_desc)
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if (proc_desc)
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{
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if (PROC_DESC_IS_DYN_SIGTRAMP (proc_desc))
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if (alpha_proc_desc_is_dyn_sigtramp (proc_desc))
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return PROC_LOW_ADDR (proc_desc); /* "prologue" is in kernel */
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/* If function is frameless, then we need to do it the hard way. I
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@ -876,7 +908,7 @@ find_proc_desc (CORE_ADDR pc, struct frame_info *next_frame)
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/* If PC is inside a dynamically generated sigtramp handler,
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create and push a procedure descriptor for that code: */
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offset = DYNAMIC_SIGTRAMP_OFFSET (pc);
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offset = alpha_dynamic_sigtramp_offset (pc);
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if (offset >= 0)
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return push_sigtramp_desc (pc - offset);
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@ -925,7 +957,7 @@ alpha_frame_chain (struct frame_info *frame)
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/* The previous frame from a sigtramp frame might be frameless
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and have frame size zero. */
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&& !frame->signal_handler_caller)
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return FRAME_PAST_SIGTRAMP_FRAME (frame, saved_pc);
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return alpha_frame_past_sigtramp_frame (frame, saved_pc);
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else
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return read_next_frame_reg (frame, PROC_FRAME_REG (proc_desc))
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+ PROC_FRAME_OFFSET (proc_desc);
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@ -976,7 +1008,7 @@ alpha_init_extra_frame_info (int fromleaf, struct frame_info *frame)
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Get the value of the frame relative sp, procedure might have been
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interrupted by a signal at it's very start. */
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else if (frame->pc == PROC_LOW_ADDR (proc_desc)
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&& !PROC_DESC_IS_DYN_SIGTRAMP (proc_desc))
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&& !alpha_proc_desc_is_dyn_sigtramp (proc_desc))
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frame->frame = read_next_frame_reg (frame->next, SP_REGNUM);
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else
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frame->frame = read_next_frame_reg (frame->next, PROC_FRAME_REG (proc_desc))
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@ -1285,7 +1317,7 @@ alpha_pop_frame (void)
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flush_cached_frames ();
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if (proc_desc && (PROC_DESC_IS_DUMMY (proc_desc)
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|| PROC_DESC_IS_DYN_SIGTRAMP (proc_desc)))
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|| alpha_proc_desc_is_dyn_sigtramp (proc_desc)))
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{
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struct linked_proc_info *pi_ptr, *prev_ptr;
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@ -1934,6 +1966,9 @@ alpha_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
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decide when to stop looking. */
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tdep->vm_min_address = (CORE_ADDR) 0x120000000;
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tdep->dynamic_sigtramp_offset = NULL;
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tdep->skip_sigtramp_frame = NULL;
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/* Type sizes */
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set_gdbarch_short_bit (gdbarch, 16);
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set_gdbarch_int_bit (gdbarch, 32);
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@ -2026,6 +2061,7 @@ alpha_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
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set_gdbarch_init_frame_pc_first (gdbarch, alpha_init_frame_pc_first);
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set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
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set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
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/* Floats are always passed as doubles. */
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set_gdbarch_coerce_float_to_double (gdbarch,
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@ -96,6 +96,15 @@ struct gdbarch_tdep
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const char *abi_name; /* Name of the above. */
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CORE_ADDR vm_min_address; /* used by heuristic_proc_start */
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/* If PC is inside a dynamically-generated signal trampoline function
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(i.e. one copied onto the user stack at run-time), return how many
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bytes PC is beyond the start of that function. Otherwise, return -1. */
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LONGEST (*dynamic_sigtramp_offset) (CORE_ADDR);
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/* If FRAME refers to a sigtramp frame, return the address of the next
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frame. */
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CORE_ADDR (*skip_sigtramp_frame) (struct frame_info *, CORE_ADDR);
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};
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void alpha_software_single_step (enum target_signal, int);
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|
|
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@ -1,3 +1,3 @@
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# Target: Little-endian Alpha
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TDEPFILES= alpha-tdep.o
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TDEPFILES= alpha-tdep.o alpha-osf1-tdep.o
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TM_FILE= tm-alpha.h
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|
|
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@ -26,7 +26,6 @@
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#define GDB_MULTI_ARCH GDB_MULTI_ARCH_PARTIAL
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#include "regcache.h"
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#include "bfd.h"
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#include "coff/sym.h" /* Needed for PDR below. */
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#include "coff/symconst.h"
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@ -37,9 +36,8 @@ struct value;
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struct symbol;
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|
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/* Number of traps that happen between exec'ing the shell
|
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* to run an inferior, and when we finally get to
|
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* the inferior code. This is 2 on most implementations.
|
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*/
|
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to run an inferior, and when we finally get to
|
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the inferior code. This is 2 on most implementations. */
|
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#define START_INFERIOR_TRAPS_EXPECTED 3
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|
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/* Offset from address of function to start of its code.
|
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|
|
@ -99,40 +97,10 @@ extern void alpha_print_extra_frame_info (struct frame_info *);
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alpha_setup_arbitrary_frame (argc, argv)
|
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extern struct frame_info *alpha_setup_arbitrary_frame (int, CORE_ADDR *);
|
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|
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/* If PC is in a shared library trampoline code, return the PC
|
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where the function itself actually starts. If not, return 0. */
|
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#define SKIP_TRAMPOLINE_CODE(pc) find_solib_trampoline_target (pc)
|
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|
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/* Return TRUE if procedure descriptor PROC is a procedure descriptor
|
||||
that refers to a dynamically generated sigtramp function.
|
||||
|
||||
OSF/1 doesn't use dynamic sigtramp functions, so this is always
|
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FALSE. */
|
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|
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#define PROC_DESC_IS_DYN_SIGTRAMP(proc) (0)
|
||||
#define SET_PROC_DESC_IS_DYN_SIGTRAMP(proc)
|
||||
|
||||
/* If PC is inside a dynamically generated sigtramp function, return
|
||||
how many bytes the program counter is beyond the start of that
|
||||
function. Otherwise, return a negative value.
|
||||
|
||||
OSF/1 doesn't use dynamic sigtramp functions, so this always
|
||||
returns -1. */
|
||||
|
||||
#define DYNAMIC_SIGTRAMP_OFFSET(pc) (-1)
|
||||
|
||||
/* Translate a signal handler frame into the address of the sigcontext
|
||||
structure. */
|
||||
|
||||
#define SIGCONTEXT_ADDR(frame) \
|
||||
(read_memory_integer ((frame)->next ? frame->next->frame : frame->frame, 8))
|
||||
|
||||
/* If FRAME refers to a sigtramp frame, return the address of the next
|
||||
frame. */
|
||||
|
||||
#define FRAME_PAST_SIGTRAMP_FRAME(frame, pc) \
|
||||
(alpha_osf_skip_sigtramp_frame (frame, pc))
|
||||
extern CORE_ADDR alpha_osf_skip_sigtramp_frame (struct frame_info *,
|
||||
CORE_ADDR);
|
||||
|
||||
#endif /* TM_ALPHA_H */
|
||||
|
|
|
|||
|
|
@ -29,7 +29,7 @@
|
|||
|
||||
/* Are we currently handling a signal ? */
|
||||
|
||||
extern long alpha_linux_sigtramp_offset (CORE_ADDR);
|
||||
extern LONGEST alpha_linux_sigtramp_offset (CORE_ADDR);
|
||||
#undef IN_SIGTRAMP
|
||||
#define IN_SIGTRAMP(pc, name) (alpha_linux_sigtramp_offset (pc) >= 0)
|
||||
|
||||
|
|
@ -42,42 +42,15 @@ extern long alpha_linux_sigtramp_offset (CORE_ADDR);
|
|||
/* Number of traps that happen between exec'ing the shell to run an
|
||||
inferior, and when we finally get to the inferior code. This is 2
|
||||
on GNU/Linux and most implementations. */
|
||||
|
||||
#undef START_INFERIOR_TRAPS_EXPECTED
|
||||
#define START_INFERIOR_TRAPS_EXPECTED 2
|
||||
|
||||
/* Return TRUE if procedure descriptor PROC is a procedure descriptor
|
||||
that refers to a dynamically generated sigtramp function. */
|
||||
|
||||
#undef PROC_DESC_IS_DYN_SIGTRAMP
|
||||
#define PROC_SIGTRAMP_MAGIC 0x0e0f0f0f
|
||||
#define PROC_DESC_IS_DYN_SIGTRAMP(proc) ((proc)->pdr.isym \
|
||||
== PROC_SIGTRAMP_MAGIC)
|
||||
#undef SET_PROC_DESC_IS_DYN_SIGTRAMP
|
||||
#define SET_PROC_DESC_IS_DYN_SIGTRAMP(proc) ((proc)->pdr.isym \
|
||||
= PROC_SIGTRAMP_MAGIC)
|
||||
|
||||
/* If PC is inside a dynamically generated sigtramp function, return
|
||||
how many bytes the program counter is beyond the start of that
|
||||
function. Otherwise, return a negative value. */
|
||||
|
||||
#undef DYNAMIC_SIGTRAMP_OFFSET
|
||||
#define DYNAMIC_SIGTRAMP_OFFSET(pc) (alpha_linux_sigtramp_offset (pc))
|
||||
|
||||
/* Translate a signal handler frame into the address of the sigcontext
|
||||
structure. */
|
||||
|
||||
#undef SIGCONTEXT_ADDR
|
||||
#define SIGCONTEXT_ADDR(frame) ((frame)->frame - 0x298)
|
||||
|
||||
/* If FRAME refers to a sigtramp frame, return the address of the next frame.
|
||||
|
||||
Under GNU/Linux, sigtramp handlers have dynamically generated
|
||||
procedure descriptors that make this hack unnecessary. */
|
||||
|
||||
#undef FRAME_PAST_SIGTRAMP_FRAME
|
||||
#define FRAME_PAST_SIGTRAMP_FRAME(frame, pc) (0)
|
||||
|
||||
#include "tm-linux.h"
|
||||
|
||||
#endif /* TM_LINUXALPHA_H */
|
||||
|
|
|
|||
Loading…
Reference in a new issue