* blockframe.c, frame.h (sigtramp_saved_pc): New routine to fetch
the saved pc from sigcontext on the stack for BSD signal handling. * config/i386/tm-i386bsd.h (SIGTRAMP_START, SIGTRAMP_END, FRAME_CHAIN, FRAMELESS_FUNCTION_INVOCATION, FRAME_SAVED_PC, SIGCONTEXT_PC_OFFSET): Define to make backtracing through sigtramp work. * config/vax/tm-vax.h (SIGTRAMP_START, SIGTRAMP_END, TARGET_UPAGES, FRAME_SAVED_PC, SIGCONTEXT_PC_OFFSET): Ditto.
This commit is contained in:
parent
b606bd8df4
commit
d541211d61
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@ -1,5 +1,18 @@
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||||||
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Tue Aug 17 01:43:55 1993 Peter Schauer (pes@regent.e-technik.tu-muenchen.de)
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* blockframe.c, frame.h (sigtramp_saved_pc): New routine to fetch
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the saved pc from sigcontext on the stack for BSD signal handling.
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* config/i386/tm-i386bsd.h (SIGTRAMP_START, SIGTRAMP_END, FRAME_CHAIN,
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FRAMELESS_FUNCTION_INVOCATION, FRAME_SAVED_PC, SIGCONTEXT_PC_OFFSET):
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Define to make backtracing through sigtramp work.
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* config/vax/tm-vax.h (SIGTRAMP_START, SIGTRAMP_END, TARGET_UPAGES,
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FRAME_SAVED_PC, SIGCONTEXT_PC_OFFSET): Ditto.
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Mon Aug 16 13:52:14 1993 Jim Kingdon (kingdon@lioth.cygnus.com)
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Mon Aug 16 13:52:14 1993 Jim Kingdon (kingdon@lioth.cygnus.com)
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* target.c (target_xfer_memory): Clear errno before calling
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to_xfer_memory.
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* stack.c (frame_info, print_frame_info): Add comment about using
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* stack.c (frame_info, print_frame_info): Add comment about using
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the starting source line number on a line boundary if backtracing
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the starting source line number on a line boundary if backtracing
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through sigtramp.
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through sigtramp.
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185
gdb/blockframe.c
185
gdb/blockframe.c
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@ -124,6 +124,7 @@ create_new_frame (addr, pc)
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CORE_ADDR pc;
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CORE_ADDR pc;
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{
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{
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struct frame_info *fci; /* Same type as FRAME */
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struct frame_info *fci; /* Same type as FRAME */
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char *name;
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fci = (struct frame_info *)
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fci = (struct frame_info *)
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obstack_alloc (&frame_cache_obstack,
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obstack_alloc (&frame_cache_obstack,
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@ -134,7 +135,8 @@ create_new_frame (addr, pc)
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fci->prev = (struct frame_info *) 0;
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fci->prev = (struct frame_info *) 0;
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fci->frame = addr;
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fci->frame = addr;
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fci->pc = pc;
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fci->pc = pc;
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fci->signal_handler_caller = IN_SIGTRAMP (fci->pc, (char *)NULL);
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find_pc_partial_function (pc, &name, (CORE_ADDR *)NULL,(CORE_ADDR *)NULL);
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fci->signal_handler_caller = IN_SIGTRAMP (fci->pc, name);
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#ifdef INIT_EXTRA_FRAME_INFO
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#ifdef INIT_EXTRA_FRAME_INFO
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INIT_EXTRA_FRAME_INFO (0, fci);
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INIT_EXTRA_FRAME_INFO (0, fci);
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@ -263,6 +265,7 @@ get_prev_frame_info (next_frame)
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FRAME_ADDR address;
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FRAME_ADDR address;
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struct frame_info *prev;
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struct frame_info *prev;
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int fromleaf = 0;
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int fromleaf = 0;
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char *name;
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/* If the requested entry is in the cache, return it.
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/* If the requested entry is in the cache, return it.
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Otherwise, figure out what the address should be for the entry
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Otherwise, figure out what the address should be for the entry
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@ -382,7 +385,9 @@ get_prev_frame_info (next_frame)
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(see tm-sparc.h). We want the pc saved in the inferior frame. */
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(see tm-sparc.h). We want the pc saved in the inferior frame. */
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INIT_FRAME_PC(fromleaf, prev);
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INIT_FRAME_PC(fromleaf, prev);
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if (IN_SIGTRAMP (prev->pc, (char *)NULL))
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find_pc_partial_function (prev->pc, &name,
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(CORE_ADDR *)NULL,(CORE_ADDR *)NULL);
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if (IN_SIGTRAMP (prev->pc, name))
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prev->signal_handler_caller = 1;
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prev->signal_handler_caller = 1;
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return prev;
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return prev;
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@ -578,18 +583,23 @@ clear_pc_function_cache()
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cache_pc_function_name = (char *)0;
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cache_pc_function_name = (char *)0;
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}
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}
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/* Finds the "function" (text symbol) that is smaller than PC
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/* Finds the "function" (text symbol) that is smaller than PC but
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but greatest of all of the potential text symbols. Sets
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greatest of all of the potential text symbols. Sets *NAME and/or
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*NAME and/or *ADDRESS conditionally if that pointer is non-zero.
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*ADDRESS conditionally if that pointer is non-null. If ENDADDR is
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Returns 0 if it couldn't find anything, 1 if it did. On a zero
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non-null, then set *ENDADDR to be the end of the function
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return, *NAME and *ADDRESS are always set to zero. On a 1 return,
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(exclusive), but passing ENDADDR as non-null means that the
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*NAME and *ADDRESS contain real information. */
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function might cause symbols to be read. This function either
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succeeds or fails (not halfway succeeds). If it succeeds, it sets
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*NAME, *ADDRESS, and *ENDADDR to real information and returns 1.
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If it fails, it sets *NAME, *ADDRESS, and *ENDADDR to zero
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and returns 0. */
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int
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int
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find_pc_partial_function (pc, name, address)
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find_pc_partial_function (pc, name, address, endaddr)
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CORE_ADDR pc;
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CORE_ADDR pc;
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char **name;
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char **name;
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CORE_ADDR *address;
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CORE_ADDR *address;
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CORE_ADDR *endaddr;
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{
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{
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struct partial_symtab *pst;
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struct partial_symtab *pst;
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struct symbol *f;
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struct symbol *f;
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@ -597,54 +607,51 @@ find_pc_partial_function (pc, name, address)
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struct partial_symbol *psb;
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struct partial_symbol *psb;
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if (pc >= cache_pc_function_low && pc < cache_pc_function_high)
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if (pc >= cache_pc_function_low && pc < cache_pc_function_high)
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{
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goto return_cached_value;
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if (address)
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*address = cache_pc_function_low;
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if (name)
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*name = cache_pc_function_name;
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return 1;
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}
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/* If sigtramp is in the u area, it counts as a function (especially
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important for step_1). */
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#if defined SIGTRAMP_START
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if (IN_SIGTRAMP (pc, (char *)NULL))
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{
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cache_pc_function_low = SIGTRAMP_START;
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cache_pc_function_high = SIGTRAMP_END;
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cache_pc_function_name = "<sigtramp>";
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goto return_cached_value;
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}
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#endif
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msymbol = lookup_minimal_symbol_by_pc (pc);
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pst = find_pc_psymtab (pc);
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pst = find_pc_psymtab (pc);
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if (pst)
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if (pst)
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{
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{
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/* Need to read the symbols to get a good value for the end address. */
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if (endaddr != NULL && !pst->readin)
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PSYMTAB_TO_SYMTAB (pst);
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if (pst->readin)
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if (pst->readin)
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{
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{
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/* The information we want has already been read in.
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/* Checking whether the msymbol has a larger value is for the
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We can go to the already readin symbols and we'll get
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"pathological" case mentioned in print_frame_info. */
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the best possible answer. */
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f = find_pc_function (pc);
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f = find_pc_function (pc);
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if (!f)
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if (f != NULL
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&& (msymbol == NULL
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|| (BLOCK_START (SYMBOL_BLOCK_VALUE (f))
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>= SYMBOL_VALUE_ADDRESS (msymbol))))
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{
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{
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return_error:
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cache_pc_function_low = BLOCK_START (SYMBOL_BLOCK_VALUE (f));
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/* No available symbol. */
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cache_pc_function_high = BLOCK_END (SYMBOL_BLOCK_VALUE (f));
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if (name != 0)
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cache_pc_function_name = SYMBOL_NAME (f);
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*name = 0;
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goto return_cached_value;
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if (address != 0)
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*address = 0;
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return 0;
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}
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}
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cache_pc_function_low = BLOCK_START (SYMBOL_BLOCK_VALUE (f));
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cache_pc_function_high = BLOCK_END (SYMBOL_BLOCK_VALUE (f));
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cache_pc_function_name = SYMBOL_NAME (f);
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if (name)
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*name = cache_pc_function_name;
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if (address)
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*address = cache_pc_function_low;
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return 1;
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}
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}
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/* Get the information from a combination of the pst
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/* Now that static symbols go in the minimal symbol table, perhaps
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(static symbols), and the minimal symbol table (extern
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we could just ignore the partial symbols. But at least for now
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symbols). */
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we use the partial or minimal symbol, whichever is larger. */
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msymbol = lookup_minimal_symbol_by_pc (pc);
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psb = find_pc_psymbol (pst, pc);
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psb = find_pc_psymbol (pst, pc);
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if (!psb && (msymbol == NULL))
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{
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goto return_error;
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}
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if (psb
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if (psb
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&& (msymbol == NULL ||
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&& (msymbol == NULL ||
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(SYMBOL_VALUE_ADDRESS (psb) >= SYMBOL_VALUE_ADDRESS (msymbol))))
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(SYMBOL_VALUE_ADDRESS (psb) >= SYMBOL_VALUE_ADDRESS (msymbol))))
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@ -654,35 +661,66 @@ find_pc_partial_function (pc, name, address)
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*address = SYMBOL_VALUE_ADDRESS (psb);
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*address = SYMBOL_VALUE_ADDRESS (psb);
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if (name)
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if (name)
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*name = SYMBOL_NAME (psb);
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*name = SYMBOL_NAME (psb);
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|
/* endaddr non-NULL can't happen here. */
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return 1;
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return 1;
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}
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}
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}
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}
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else
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/* Must be in the minimal symbol table. */
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/* Must be in the minimal symbol table. */
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if (msymbol == NULL)
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{
|
{
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msymbol = lookup_minimal_symbol_by_pc (pc);
|
/* No available symbol. */
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if (msymbol == NULL)
|
if (name != NULL)
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goto return_error;
|
*name = 0;
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|
if (address != NULL)
|
||||||
|
*address = 0;
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||||||
|
if (endaddr != NULL)
|
||||||
|
*endaddr = 0;
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||||||
|
return 0;
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}
|
}
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||||||
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||||||
{
|
/* I believe the purpose of this check is to make sure that anything
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if (msymbol -> type == mst_text)
|
beyond the end of the text segment does not appear as part of the
|
||||||
cache_pc_function_low = SYMBOL_VALUE_ADDRESS (msymbol);
|
last function of the text segment. It assumes that there is something
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else
|
other than a mst_text symbol after the text segment. It is broken in
|
||||||
/* It is a transfer table for Sun shared libraries. */
|
various cases, so anything relying on this behavior (there might be
|
||||||
cache_pc_function_low = pc - FUNCTION_START_OFFSET;
|
some places) should be using find_pc_section or some such instead. */
|
||||||
}
|
if (msymbol -> type == mst_text)
|
||||||
|
cache_pc_function_low = SYMBOL_VALUE_ADDRESS (msymbol);
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||||||
|
else
|
||||||
|
/* It is a transfer table for Sun shared libraries. */
|
||||||
|
cache_pc_function_low = pc - FUNCTION_START_OFFSET;
|
||||||
cache_pc_function_name = SYMBOL_NAME (msymbol);
|
cache_pc_function_name = SYMBOL_NAME (msymbol);
|
||||||
/* FIXME: Deal with bumping into end of minimal symbols for a given
|
|
||||||
objfile, and what about testing for mst_text again? */
|
|
||||||
if (SYMBOL_NAME (msymbol + 1) != NULL)
|
if (SYMBOL_NAME (msymbol + 1) != NULL)
|
||||||
|
/* This might be part of a different segment, which might be a bad
|
||||||
|
idea. Perhaps we should be using the smaller of this address or the
|
||||||
|
endaddr from find_pc_section. */
|
||||||
cache_pc_function_high = SYMBOL_VALUE_ADDRESS (msymbol + 1);
|
cache_pc_function_high = SYMBOL_VALUE_ADDRESS (msymbol + 1);
|
||||||
else
|
else
|
||||||
cache_pc_function_high = cache_pc_function_low + 1;
|
{
|
||||||
|
/* We got the start address from the last msymbol in the objfile.
|
||||||
|
So the end address is the end of the section. */
|
||||||
|
struct obj_section *sec;
|
||||||
|
|
||||||
|
sec = find_pc_section (pc);
|
||||||
|
if (sec == NULL)
|
||||||
|
{
|
||||||
|
/* Don't know if this can happen but if it does, then just say
|
||||||
|
that the function is 1 byte long. */
|
||||||
|
cache_pc_function_high = cache_pc_function_low + 1;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
cache_pc_function_high = sec->endaddr;
|
||||||
|
}
|
||||||
|
|
||||||
|
return_cached_value:
|
||||||
if (address)
|
if (address)
|
||||||
*address = cache_pc_function_low;
|
*address = cache_pc_function_low;
|
||||||
if (name)
|
if (name)
|
||||||
*name = cache_pc_function_name;
|
*name = cache_pc_function_name;
|
||||||
|
if (endaddr)
|
||||||
|
*endaddr = cache_pc_function_high;
|
||||||
return 1;
|
return 1;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -714,6 +752,35 @@ block_innermost_frame (block)
|
||||||
|
|
||||||
#endif /* 0 */
|
#endif /* 0 */
|
||||||
|
|
||||||
|
#ifdef SIGCONTEXT_PC_OFFSET
|
||||||
|
/* Get saved user PC for sigtramp from sigcontext for BSD style sigtramp. */
|
||||||
|
|
||||||
|
CORE_ADDR
|
||||||
|
sigtramp_saved_pc (frame)
|
||||||
|
FRAME frame;
|
||||||
|
{
|
||||||
|
CORE_ADDR sigcontext_addr;
|
||||||
|
char buf[TARGET_PTR_BIT / TARGET_CHAR_BIT];
|
||||||
|
int ptrbytes = TARGET_PTR_BIT / TARGET_CHAR_BIT;
|
||||||
|
int sigcontext_offs = (2 * TARGET_INT_BIT) / TARGET_CHAR_BIT;
|
||||||
|
|
||||||
|
/* Get sigcontext address, it is the third parameter on the stack. */
|
||||||
|
if (frame->next)
|
||||||
|
sigcontext_addr = read_memory_integer (FRAME_ARGS_ADDRESS (frame->next)
|
||||||
|
+ FRAME_ARGS_SKIP + sigcontext_offs,
|
||||||
|
ptrbytes);
|
||||||
|
else
|
||||||
|
sigcontext_addr = read_memory_integer (read_register (SP_REGNUM)
|
||||||
|
+ sigcontext_offs,
|
||||||
|
ptrbytes);
|
||||||
|
|
||||||
|
/* Don't cause a memory_error when accessing sigcontext in case the stack
|
||||||
|
layout has changed or the stack is corrupt. */
|
||||||
|
target_read_memory (sigcontext_addr + SIGCONTEXT_PC_OFFSET, buf, ptrbytes);
|
||||||
|
return extract_unsigned_integer (buf, ptrbytes);
|
||||||
|
}
|
||||||
|
#endif /* SIGCONTEXT_PC_OFFSET */
|
||||||
|
|
||||||
void
|
void
|
||||||
_initialize_blockframe ()
|
_initialize_blockframe ()
|
||||||
{
|
{
|
||||||
|
|
278
gdb/frame.h
278
gdb/frame.h
|
@ -1,81 +1,113 @@
|
||||||
/* Definitions for dealing with stack frames, for GDB, the GNU debugger.
|
/* Definitions for dealing with stack frames, for GDB, the GNU debugger.
|
||||||
Copyright (C) 1986, 1989 Free Software Foundation, Inc.
|
Copyright 1986, 1989, 1991, 1992 Free Software Foundation, Inc.
|
||||||
|
|
||||||
This file is part of GDB.
|
This file is part of GDB.
|
||||||
|
|
||||||
GDB is free software; you can redistribute it and/or modify
|
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
|
it under the terms of the GNU General Public License as published by
|
||||||
the Free Software Foundation; either version 1, or (at your option)
|
the Free Software Foundation; either version 2 of the License, or
|
||||||
any later version.
|
(at your option) any later version.
|
||||||
|
|
||||||
GDB is distributed in the hope that it will be useful,
|
This program is distributed in the hope that it will be useful,
|
||||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
GNU General Public License for more details.
|
GNU General Public License for more details.
|
||||||
|
|
||||||
You should have received a copy of the GNU General Public License
|
You should have received a copy of the GNU General Public License
|
||||||
along with GDB; see the file COPYING. If not, write to
|
along with this program; if not, write to the Free Software
|
||||||
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||||||
|
|
||||||
#if !defined (FRAME_H)
|
#if !defined (FRAME_H)
|
||||||
#define FRAME_H 1
|
#define FRAME_H 1
|
||||||
#include "param.h"
|
|
||||||
|
|
||||||
/*
|
/* A FRAME identifies a specific stack frame. It is not constant over
|
||||||
* FRAME is the type of the identifier of a specific stack frame. It
|
calls to the inferior (frame addresses are, see below).
|
||||||
* is a pointer to the frame cache item corresponding to this frame.
|
|
||||||
* Please note that frame id's are *not* constant over calls to the
|
This is implemented as a "struct frame_info *". This file and
|
||||||
* inferior. Use frame addresses, which are.
|
blockframe.c are the only places which are allowed to use the
|
||||||
*
|
equivalence between FRAME and struct frame_info *. Exception:
|
||||||
* FRAME_ADDR is the type of the address of a specific frame. I
|
Prototypes in other files use "struct frame_info *" because this
|
||||||
* cannot imagine a case in which this would not be CORE_ADDR, so
|
file might not be included.
|
||||||
* maybe it's silly to give it it's own type. Life's rough.
|
|
||||||
*
|
The distinction between a FRAME and a "struct frame_info *" is made
|
||||||
* FRAME_FP is a macro which converts from a frame identifier into a
|
with the idea of maybe someday changing a FRAME to be something else,
|
||||||
* frame_address.
|
but seems to me that a "struct frame_info *" is fully general (since
|
||||||
*
|
any necessarily fields can be added; changing the meaning of existing
|
||||||
* FRAME_INFO_ID is a macro which "converts" from a frame info pointer
|
fields is not helped by the FRAME distinction), and this distinction
|
||||||
* to a frame id. This is here in case I or someone else decides to
|
merely creates unnecessary hair. -kingdon, 18 May 93. */
|
||||||
* change the FRAME type again.
|
|
||||||
*
|
|
||||||
* This file and blockframe.c are the only places which are allowed to
|
|
||||||
* use the equivalence between FRAME and struct frame_info *. EXCEPTION:
|
|
||||||
* value.h uses CORE_ADDR instead of FRAME_ADDR because the compiler
|
|
||||||
* will accept that in the absense of this file.
|
|
||||||
*/
|
|
||||||
typedef struct frame_info *FRAME;
|
typedef struct frame_info *FRAME;
|
||||||
typedef CORE_ADDR FRAME_ADDR;
|
|
||||||
#define FRAME_FP(fr) ((fr)->frame)
|
/* Convert from a "struct frame_info *" into a FRAME. */
|
||||||
#define FRAME_INFO_ID(f) (f)
|
#define FRAME_INFO_ID(f) (f)
|
||||||
|
|
||||||
/*
|
/* Convert from a FRAME into a "struct frame_info *". */
|
||||||
* Caching structure for stack frames. This is also the structure
|
extern struct frame_info *
|
||||||
* used for extended info about stack frames. May add more to this
|
get_frame_info PARAMS ((FRAME));
|
||||||
* structure as it becomes necessary.
|
|
||||||
*
|
/* Type of the address of a frame. It is widely assumed (at least in
|
||||||
* Note that the first entry in the cache will always refer to the
|
prototypes in headers which might not include this header) that
|
||||||
* innermost executing frame. This value should be set (is it?
|
this is the same as CORE_ADDR, and no one can think of a case in
|
||||||
* Check) in something like normal_stop.
|
which it wouldn't be, so it might be best to remove this typedef. */
|
||||||
*/
|
typedef CORE_ADDR FRAME_ADDR;
|
||||||
|
|
||||||
|
/* Convert from a FRAME into a frame address. Except in the
|
||||||
|
machine-dependent *FRAME* macros, a frame address has no defined
|
||||||
|
meaning other than as a magic cookie which identifies a frame over
|
||||||
|
calls to the inferior. The only known exception is inferior.h
|
||||||
|
(PC_IN_CALL_DUMMY) [ON_STACK]; see comments there. You cannot
|
||||||
|
assume that a frame address contains enough information to
|
||||||
|
reconstruct the frame; if you want more than just to identify the
|
||||||
|
frame (e.g. be able to fetch variables relative to that frame),
|
||||||
|
then save the whole struct frame_info (and the next struct
|
||||||
|
frame_info, since the latter is used for fetching variables on some
|
||||||
|
machines). */
|
||||||
|
|
||||||
|
#define FRAME_FP(fr) ((fr)->frame)
|
||||||
|
|
||||||
|
/* We keep a cache of stack frames, each of which is a "struct
|
||||||
|
frame_info". The innermost one gets allocated (in
|
||||||
|
wait_for_inferior) each time the inferior stops; current_frame
|
||||||
|
points to it. Additional frames get allocated (in
|
||||||
|
get_prev_frame_info) as needed, and are chained through the next
|
||||||
|
and prev fields. Any time that the frame cache becomes invalid
|
||||||
|
(most notably when we execute something, but also if we change how
|
||||||
|
we interpret the frames (e.g. "set heuristic-fence-post" in
|
||||||
|
mips-tdep.c, or anything which reads new symbols)), we should call
|
||||||
|
reinit_frame_cache. */
|
||||||
|
|
||||||
struct frame_info
|
struct frame_info
|
||||||
{
|
{
|
||||||
/* Nominal address of the frame described. */
|
/* Nominal address of the frame described. See comments at FRAME_FP
|
||||||
|
about what this means outside the *FRAME* macros; in the *FRAME*
|
||||||
|
macros, it can mean whatever makes most sense for this machine. */
|
||||||
FRAME_ADDR frame;
|
FRAME_ADDR frame;
|
||||||
|
|
||||||
/* Address at which execution is occurring in this frame.
|
/* Address at which execution is occurring in this frame.
|
||||||
For the innermost frame, it's the current pc.
|
For the innermost frame, it's the current pc.
|
||||||
For other frames, it is a pc saved in the next frame. */
|
For other frames, it is a pc saved in the next frame. */
|
||||||
CORE_ADDR pc;
|
CORE_ADDR pc;
|
||||||
/* The frame called by the frame we are describing, or 0.
|
|
||||||
This may be set even if there isn't a frame called by the one
|
/* Nonzero if this is a frame associated with calling a signal handler.
|
||||||
we are describing (.->next == 0); in that case it is simply the
|
|
||||||
bottom of this frame */
|
Set by machine-dependent code. On some machines, if
|
||||||
FRAME_ADDR next_frame;
|
the machine-dependent code fails to check for this, the backtrace
|
||||||
|
will look relatively normal. For example, on the i386
|
||||||
|
#3 0x158728 in sighold ()
|
||||||
|
On other machines (e.g. rs6000), the machine-dependent code better
|
||||||
|
set this to prevent us from trying to print it like a normal frame. */
|
||||||
|
int signal_handler_caller;
|
||||||
|
|
||||||
/* Anything extra for this structure that may have been defined
|
/* Anything extra for this structure that may have been defined
|
||||||
in the machine depedent files. */
|
in the machine depedent files. */
|
||||||
#ifdef EXTRA_FRAME_INFO
|
#ifdef EXTRA_FRAME_INFO
|
||||||
EXTRA_FRAME_INFO
|
EXTRA_FRAME_INFO
|
||||||
#endif
|
#endif
|
||||||
/* Pointers to the next and previous frame_info's in this stack. */
|
|
||||||
|
/* We should probably also store a "struct frame_saved_regs" here.
|
||||||
|
This is already done by some machines (e.g. config/m88k/tm-m88k.h)
|
||||||
|
but there is no reason it couldn't be general. */
|
||||||
|
|
||||||
|
/* Pointers to the next and previous frame_info's in the frame cache. */
|
||||||
FRAME next, prev;
|
FRAME next, prev;
|
||||||
};
|
};
|
||||||
|
|
||||||
|
@ -83,46 +115,142 @@ struct frame_info
|
||||||
|
|
||||||
struct frame_saved_regs
|
struct frame_saved_regs
|
||||||
{
|
{
|
||||||
/* For each register, address of where it was saved on entry to the frame,
|
|
||||||
or zero if it was not saved on entry to this frame. */
|
/* For each register, address of where it was saved on entry to
|
||||||
|
the frame, or zero if it was not saved on entry to this frame.
|
||||||
|
This includes special registers such as pc and fp saved in
|
||||||
|
special ways in the stack frame. The SP_REGNUM is even more
|
||||||
|
special, the address here is the sp for the next frame, not the
|
||||||
|
address where the sp was saved. */
|
||||||
|
|
||||||
CORE_ADDR regs[NUM_REGS];
|
CORE_ADDR regs[NUM_REGS];
|
||||||
};
|
};
|
||||||
|
|
||||||
|
/* Define a default FRAME_CHAIN_VALID, in the form that is suitable for most
|
||||||
|
targets. If FRAME_CHAIN_VALID returns zero it means that the given frame
|
||||||
|
is the outermost one and has no caller.
|
||||||
|
|
||||||
|
If a particular target needs a different definition, then it can override
|
||||||
|
the definition here by providing one in the tm file. */
|
||||||
|
|
||||||
|
#if !defined (FRAME_CHAIN_VALID)
|
||||||
|
|
||||||
|
#if defined (FRAME_CHAIN_VALID_ALTERNATE)
|
||||||
|
|
||||||
|
/* Use the alternate method of avoiding running up off the end of the frame
|
||||||
|
chain or following frames back into the startup code. See the comments
|
||||||
|
in objfiles.h. */
|
||||||
|
|
||||||
|
#define FRAME_CHAIN_VALID(chain, thisframe) \
|
||||||
|
((chain) != 0 \
|
||||||
|
&& !inside_main_func ((thisframe) -> pc) \
|
||||||
|
&& !inside_entry_func ((thisframe) -> pc))
|
||||||
|
|
||||||
|
#else
|
||||||
|
|
||||||
|
#define FRAME_CHAIN_VALID(chain, thisframe) \
|
||||||
|
((chain) != 0 \
|
||||||
|
&& !inside_entry_file (FRAME_SAVED_PC (thisframe)))
|
||||||
|
|
||||||
|
#endif /* FRAME_CHAIN_VALID_ALTERNATE */
|
||||||
|
|
||||||
|
#endif /* FRAME_CHAIN_VALID */
|
||||||
|
|
||||||
|
/* If we encounter a request to use base register addressing of variables
|
||||||
|
on a machine for which gdb has not been configured to support such
|
||||||
|
access, report the failure to support this access mode. */
|
||||||
|
|
||||||
|
#if !defined (FRAME_GET_BASEREG_VALUE)
|
||||||
|
|
||||||
|
#define FRAME_GET_BASEREG_VALUE(frame, regno) \
|
||||||
|
(error ("Missing valid method for finding contents of base register."),0)
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
/* The stack frame that the user has specified for commands to act on.
|
/* The stack frame that the user has specified for commands to act on.
|
||||||
Note that one cannot assume this is the address of valid data. */
|
Note that one cannot assume this is the address of valid data. */
|
||||||
|
|
||||||
extern FRAME selected_frame;
|
extern FRAME selected_frame;
|
||||||
|
|
||||||
extern struct frame_info *get_frame_info ();
|
/* Level of the selected frame:
|
||||||
extern struct frame_info *get_prev_frame_info ();
|
0 for innermost, 1 for its caller, ...
|
||||||
|
or -1 for frame specified by address with no defined level. */
|
||||||
|
|
||||||
extern FRAME create_new_frame ();
|
extern int selected_frame_level;
|
||||||
extern void flush_cached_frames ();
|
|
||||||
|
|
||||||
extern void get_frame_saved_regs ();
|
extern struct frame_info *
|
||||||
|
get_prev_frame_info PARAMS ((FRAME));
|
||||||
|
|
||||||
extern void set_current_frame ();
|
extern FRAME
|
||||||
extern FRAME get_prev_frame ();
|
create_new_frame PARAMS ((FRAME_ADDR, CORE_ADDR));
|
||||||
extern FRAME get_current_frame ();
|
|
||||||
extern FRAME get_next_frame ();
|
|
||||||
|
|
||||||
extern struct block *get_frame_block ();
|
extern void
|
||||||
extern struct block *get_current_block ();
|
flush_cached_frames PARAMS ((void));
|
||||||
extern struct block *get_selected_block ();
|
|
||||||
extern struct symbol *get_frame_function ();
|
|
||||||
extern CORE_ADDR get_frame_pc ();
|
|
||||||
extern CORE_ADDR get_pc_function_start ();
|
|
||||||
struct block *block_for_pc ();
|
|
||||||
|
|
||||||
int frameless_look_for_prologue ();
|
extern void
|
||||||
|
reinit_frame_cache PARAMS ((void));
|
||||||
|
|
||||||
void print_frame_args ();
|
extern void
|
||||||
|
get_frame_saved_regs PARAMS ((struct frame_info *, struct frame_saved_regs *));
|
||||||
|
|
||||||
/* In stack.c */
|
extern void
|
||||||
extern FRAME find_relative_frame ();
|
set_current_frame PARAMS ((FRAME));
|
||||||
extern void print_selected_frame ();
|
|
||||||
extern void print_sel_frame ();
|
|
||||||
extern void select_frame ();
|
|
||||||
extern void record_selected_frame ();
|
|
||||||
|
|
||||||
#endif /* frame.h not already included. */
|
extern FRAME
|
||||||
|
get_prev_frame PARAMS ((FRAME));
|
||||||
|
|
||||||
|
extern FRAME
|
||||||
|
get_current_frame PARAMS ((void));
|
||||||
|
|
||||||
|
extern FRAME
|
||||||
|
get_next_frame PARAMS ((FRAME));
|
||||||
|
|
||||||
|
extern struct block *
|
||||||
|
get_frame_block PARAMS ((FRAME));
|
||||||
|
|
||||||
|
extern struct block *
|
||||||
|
get_current_block PARAMS ((void));
|
||||||
|
|
||||||
|
extern struct block *
|
||||||
|
get_selected_block PARAMS ((void));
|
||||||
|
|
||||||
|
extern struct symbol *
|
||||||
|
get_frame_function PARAMS ((FRAME));
|
||||||
|
|
||||||
|
extern CORE_ADDR
|
||||||
|
get_frame_pc PARAMS ((FRAME));
|
||||||
|
|
||||||
|
extern CORE_ADDR
|
||||||
|
get_pc_function_start PARAMS ((CORE_ADDR));
|
||||||
|
|
||||||
|
extern struct block *
|
||||||
|
block_for_pc PARAMS ((CORE_ADDR));
|
||||||
|
|
||||||
|
extern int
|
||||||
|
frameless_look_for_prologue PARAMS ((FRAME));
|
||||||
|
|
||||||
|
extern void
|
||||||
|
print_frame_args PARAMS ((struct symbol *, struct frame_info *, int, FILE *));
|
||||||
|
|
||||||
|
extern FRAME
|
||||||
|
find_relative_frame PARAMS ((FRAME, int*));
|
||||||
|
|
||||||
|
extern void
|
||||||
|
print_stack_frame PARAMS ((FRAME, int, int));
|
||||||
|
|
||||||
|
extern void
|
||||||
|
select_frame PARAMS ((FRAME, int));
|
||||||
|
|
||||||
|
extern void
|
||||||
|
record_selected_frame PARAMS ((FRAME_ADDR *, int *));
|
||||||
|
|
||||||
|
extern void
|
||||||
|
print_frame_info PARAMS ((struct frame_info *, int, int, int));
|
||||||
|
|
||||||
|
extern CORE_ADDR
|
||||||
|
find_saved_register PARAMS ((FRAME, int));
|
||||||
|
|
||||||
|
extern CORE_ADDR
|
||||||
|
sigtramp_saved_pc PARAMS ((FRAME));
|
||||||
|
|
||||||
|
#endif /* !defined (FRAME_H) */
|
||||||
|
|
Loading…
Reference in New Issue