diff options
| -rw-r--r-- | gdb/ChangeLog | 41 | ||||
| -rw-r--r-- | gdb/Makefile.in | 6 | ||||
| -rw-r--r-- | gdb/alpha-linux-tdep.c | 7 | ||||
| -rw-r--r-- | gdb/alpha-osf1-tdep.c | 53 | ||||
| -rw-r--r-- | gdb/alpha-tdep.c | 74 | ||||
| -rw-r--r-- | gdb/alpha-tdep.h | 9 | ||||
| -rw-r--r-- | gdb/config/alpha/alpha-osf1.mt | 2 | ||||
| -rw-r--r-- | gdb/config/alpha/tm-alpha.h | 38 | ||||
| -rw-r--r-- | gdb/config/alpha/tm-alphalinux.h | 29 |
9 files changed, 172 insertions, 87 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index d424106..e42ebd3 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,46 @@ 2002-04-24 Jason Thorpe <thorpej@wasabisystems.com> + * 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. + +2002-04-24 Jason Thorpe <thorpej@wasabisystems.com> + * NEWS: Note that Alpha targets are now multi-arch. 2002-04-24 Michael Snyder <msnyder@redhat.com> diff --git a/gdb/Makefile.in b/gdb/Makefile.in index 6c7a4f0..de82a03 100644 --- a/gdb/Makefile.in +++ b/gdb/Makefile.in @@ -1178,8 +1178,8 @@ unexport CHILLFLAGS CHILL_LIB CHILL_FOR_TARGET : ALLDEPFILES = 29k-share/udi/udip2soc.c 29k-share/udi/udr.c \ 29k-share/udi/udi2go32.c \ a29k-tdep.c a68v-nat.c \ - alpha-nat.c alphabsd-nat.c alpha-tdep.c alpha-linux-tdep.c \ - alphafbsd-tdep.c \ + alpha-nat.c alphabsd-nat.c alpha-tdep.c \ + alpha-linux-tdep.c alpha-osf1-tdep.c alphafbsd-tdep.c \ arm-linux-nat.c arm-linux-tdep.c arm-tdep.c \ armnbsd-nat.c armnbsd-tdep.c \ coff-solib.c \ @@ -1255,6 +1255,8 @@ alpha-tdep.o: alpha-tdep.c $(defs_h) $(gdbcmd_h) $(gdbcore_h) \ alpha-linux-tdep.o: alpha-linux-tdep.c $(defs_h) $(value_h) alpha-tdep.h +alpha-osf1-tdep.o: alpha-osf1-tdep.c $(defs_h) $(value_h) alpha-tdep.h + alphafbsd-tdep.o: alphafbsd-tdep.c $(defs_h) $(value_h) alpha-tdep.h annotate.o: annotate.c $(defs_h) $(annotate_h) $(value_h) $(target_h) $(gdbtypes_h) diff --git a/gdb/alpha-linux-tdep.c b/gdb/alpha-linux-tdep.c index cb4e9c7..f9b060d 100644 --- a/gdb/alpha-linux-tdep.c +++ b/gdb/alpha-linux-tdep.c @@ -19,6 +19,7 @@ Boston, MA 02111-1307, USA. */ #include "defs.h" +#include "gdbcore.h" #include "value.h" #include "alpha-tdep.h" @@ -45,7 +46,7 @@ middle of the designated sequence, in which case there is no guarantee that we are in the middle of a sigreturn syscall. Don't think this will be a problem in praxis, though. */ -long +LONGEST alpha_linux_sigtramp_offset (CORE_ADDR pc) { unsigned int i[3], w; @@ -88,7 +89,9 @@ static void alpha_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { - /* Place holder. */ + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + + tdep->dynamic_sigtramp_offset = alpha_linux_sigtramp_offset; } void diff --git a/gdb/alpha-osf1-tdep.c b/gdb/alpha-osf1-tdep.c new file mode 100644 index 0000000..97ac6fb --- /dev/null +++ b/gdb/alpha-osf1-tdep.c @@ -0,0 +1,53 @@ +/* Target-dependent code for OSF/1 on Alpha. + Copyright 2002 Free Software Foundation, Inc. + + This file is part of GDB. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include "defs.h" +#include "frame.h" +#include "value.h" + +#include "alpha-tdep.h" + +/* Under OSF/1, the __sigtramp routine is frameless and has a frame + size of zero, but we are able to backtrace through it. */ +static CORE_ADDR +alpha_osf1_skip_sigtramp_frame (struct frame_info *frame, CORE_ADDR pc) +{ + char *name; + + find_pc_partial_function (pc, &name, (CORE_ADDR *) NULL, (CORE_ADDR *) NULL); + if (PC_IN_SIGTRAMP (pc, name)) + return frame->frame; + return 0; +} + +static void +alpha_osf1_init_abi (struct gdbarch_info info, + struct gdbarch *gdbarch) +{ + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + + tdep->skip_sigtramp_frame = alpha_osf1_skip_sigtramp_frame; +} + +void +_initialize_alpha_osf1_tdep (void) +{ + alpha_gdbarch_register_os_abi (ALPHA_ABI_OSF1, alpha_osf1_init_abi); +} diff --git a/gdb/alpha-tdep.c b/gdb/alpha-tdep.c index 4dc9a90..ef0b2cd 100644 --- a/gdb/alpha-tdep.c +++ b/gdb/alpha-tdep.c @@ -167,8 +167,6 @@ static unsigned int heuristic_fence_post = 0; */ /* *INDENT-ON* */ - - #define PROC_LOW_ADDR(proc) ((proc)->pdr.adr) /* least address */ /* These next two fields are kind of being hijacked. I wonder if iline is too small for the values it needs to hold, if GDB is @@ -201,19 +199,53 @@ alpha_osf_in_sigtramp (CORE_ADDR pc, char *func_name) return (func_name != NULL && STREQ ("__sigtramp", func_name)); } -/* Under OSF/1, the __sigtramp routine is frameless and has a frame - size of zero, but we are able to backtrace through it. */ -CORE_ADDR -alpha_osf_skip_sigtramp_frame (struct frame_info *frame, CORE_ADDR pc) +static CORE_ADDR +alpha_frame_past_sigtramp_frame (struct frame_info *frame, CORE_ADDR pc) { - char *name; - find_pc_partial_function (pc, &name, (CORE_ADDR *) NULL, (CORE_ADDR *) NULL); - if (PC_IN_SIGTRAMP (pc, name)) - return frame->frame; - else - return 0; + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + if (tdep->skip_sigtramp_frame != NULL) + return (tdep->skip_sigtramp_frame (frame, pc)); + + return (0); +} + +static LONGEST +alpha_dynamic_sigtramp_offset (CORE_ADDR pc) +{ + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + /* Must be provided by OS/ABI variant code if supported. */ + if (tdep->dynamic_sigtramp_offset != NULL) + return (tdep->dynamic_sigtramp_offset (pc)); + + return (-1); +} + +#define ALPHA_PROC_SIGTRAMP_MAGIC 0x0e0f0f0f + +/* Return TRUE if the procedure descriptor PROC is a procedure + descriptor that refers to a dynamically generated signal + trampoline routine. */ +static int +alpha_proc_desc_is_dyn_sigtramp (struct alpha_extra_func_info *proc) +{ + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + if (tdep->dynamic_sigtramp_offset != NULL) + return (proc->pdr.isym == ALPHA_PROC_SIGTRAMP_MAGIC); + + return (0); +} + +static void +alpha_set_proc_desc_is_dyn_sigtramp (struct alpha_extra_func_info *proc) +{ + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + if (tdep->dynamic_sigtramp_offset != NULL) + proc->pdr.isym = ALPHA_PROC_SIGTRAMP_MAGIC; } - /* Dynamically create a signal-handler caller procedure descriptor for the signal-handler return code starting at address LOW_ADDR. The @@ -242,7 +274,7 @@ push_sigtramp_desc (CORE_ADDR low_addr) PROC_FREG_MASK (proc_desc) = 0xffff; PROC_PC_REG (proc_desc) = 26; PROC_LOCALOFF (proc_desc) = 0; - SET_PROC_DESC_IS_DYN_SIGTRAMP (proc_desc); + alpha_set_proc_desc_is_dyn_sigtramp (proc_desc); return (proc_desc); } @@ -734,7 +766,7 @@ after_prologue (CORE_ADDR pc, alpha_extra_func_info_t proc_desc) if (proc_desc) { - if (PROC_DESC_IS_DYN_SIGTRAMP (proc_desc)) + if (alpha_proc_desc_is_dyn_sigtramp (proc_desc)) return PROC_LOW_ADDR (proc_desc); /* "prologue" is in kernel */ /* If function is frameless, then we need to do it the hard way. I @@ -876,7 +908,7 @@ find_proc_desc (CORE_ADDR pc, struct frame_info *next_frame) /* If PC is inside a dynamically generated sigtramp handler, create and push a procedure descriptor for that code: */ - offset = DYNAMIC_SIGTRAMP_OFFSET (pc); + offset = alpha_dynamic_sigtramp_offset (pc); if (offset >= 0) return push_sigtramp_desc (pc - offset); @@ -925,7 +957,7 @@ alpha_frame_chain (struct frame_info *frame) /* The previous frame from a sigtramp frame might be frameless and have frame size zero. */ && !frame->signal_handler_caller) - return FRAME_PAST_SIGTRAMP_FRAME (frame, saved_pc); + return alpha_frame_past_sigtramp_frame (frame, saved_pc); else return read_next_frame_reg (frame, PROC_FRAME_REG (proc_desc)) + PROC_FRAME_OFFSET (proc_desc); @@ -976,7 +1008,7 @@ alpha_init_extra_frame_info (int fromleaf, struct frame_info *frame) Get the value of the frame relative sp, procedure might have been interrupted by a signal at it's very start. */ else if (frame->pc == PROC_LOW_ADDR (proc_desc) - && !PROC_DESC_IS_DYN_SIGTRAMP (proc_desc)) + && !alpha_proc_desc_is_dyn_sigtramp (proc_desc)) frame->frame = read_next_frame_reg (frame->next, SP_REGNUM); else frame->frame = read_next_frame_reg (frame->next, PROC_FRAME_REG (proc_desc)) @@ -1285,7 +1317,7 @@ alpha_pop_frame (void) flush_cached_frames (); if (proc_desc && (PROC_DESC_IS_DUMMY (proc_desc) - || PROC_DESC_IS_DYN_SIGTRAMP (proc_desc))) + || alpha_proc_desc_is_dyn_sigtramp (proc_desc))) { struct linked_proc_info *pi_ptr, *prev_ptr; @@ -1934,6 +1966,9 @@ alpha_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) decide when to stop looking. */ tdep->vm_min_address = (CORE_ADDR) 0x120000000; + tdep->dynamic_sigtramp_offset = NULL; + tdep->skip_sigtramp_frame = NULL; + /* Type sizes */ set_gdbarch_short_bit (gdbarch, 16); set_gdbarch_int_bit (gdbarch, 32); @@ -2026,6 +2061,7 @@ alpha_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) set_gdbarch_init_frame_pc_first (gdbarch, alpha_init_frame_pc_first); set_gdbarch_inner_than (gdbarch, core_addr_lessthan); + set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target); /* Floats are always passed as doubles. */ set_gdbarch_coerce_float_to_double (gdbarch, diff --git a/gdb/alpha-tdep.h b/gdb/alpha-tdep.h index 618d47c..a9a724d 100644 --- a/gdb/alpha-tdep.h +++ b/gdb/alpha-tdep.h @@ -96,6 +96,15 @@ struct gdbarch_tdep const char *abi_name; /* Name of the above. */ CORE_ADDR vm_min_address; /* used by heuristic_proc_start */ + + /* If PC is inside a dynamically-generated signal trampoline function + (i.e. one copied onto the user stack at run-time), return how many + bytes PC is beyond the start of that function. Otherwise, return -1. */ + LONGEST (*dynamic_sigtramp_offset) (CORE_ADDR); + + /* If FRAME refers to a sigtramp frame, return the address of the next + frame. */ + CORE_ADDR (*skip_sigtramp_frame) (struct frame_info *, CORE_ADDR); }; void alpha_software_single_step (enum target_signal, int); diff --git a/gdb/config/alpha/alpha-osf1.mt b/gdb/config/alpha/alpha-osf1.mt index 98f87c1..29212c9 100644 --- a/gdb/config/alpha/alpha-osf1.mt +++ b/gdb/config/alpha/alpha-osf1.mt @@ -1,3 +1,3 @@ # Target: Little-endian Alpha -TDEPFILES= alpha-tdep.o +TDEPFILES= alpha-tdep.o alpha-osf1-tdep.o TM_FILE= tm-alpha.h diff --git a/gdb/config/alpha/tm-alpha.h b/gdb/config/alpha/tm-alpha.h index bfc2a6e..61d9561 100644 --- a/gdb/config/alpha/tm-alpha.h +++ b/gdb/config/alpha/tm-alpha.h @@ -26,7 +26,6 @@ #define GDB_MULTI_ARCH GDB_MULTI_ARCH_PARTIAL -#include "regcache.h" #include "bfd.h" #include "coff/sym.h" /* Needed for PDR below. */ #include "coff/symconst.h" @@ -36,10 +35,9 @@ struct type; struct value; struct symbol; -/* 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 most implementations. - */ +/* 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 most implementations. */ #define START_INFERIOR_TRAPS_EXPECTED 3 /* Offset from address of function to start of its code. @@ -99,40 +97,10 @@ extern void alpha_print_extra_frame_info (struct frame_info *); alpha_setup_arbitrary_frame (argc, argv) extern struct frame_info *alpha_setup_arbitrary_frame (int, CORE_ADDR *); -/* If PC is in a shared library trampoline code, return the PC - where the function itself actually starts. If not, return 0. */ -#define SKIP_TRAMPOLINE_CODE(pc) find_solib_trampoline_target (pc) - -/* 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 - FALSE. */ - -#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 */ diff --git a/gdb/config/alpha/tm-alphalinux.h b/gdb/config/alpha/tm-alphalinux.h index 23592aa..0235758 100644 --- a/gdb/config/alpha/tm-alphalinux.h +++ b/gdb/config/alpha/tm-alphalinux.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 */ |