binutils-gdb/gdb/frame.h

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/* Definitions for dealing with stack frames, for GDB, the GNU debugger.
Copyright (C) 1986-2014 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
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 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,
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.
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You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#if !defined (FRAME_H)
#define FRAME_H 1
/* The following is the intended naming schema for frame functions.
It isn't 100% consistent, but it is aproaching that. Frame naming
schema:
Prefixes:
get_frame_WHAT...(): Get WHAT from the THIS frame (functionaly
equivalent to THIS->next->unwind->what)
frame_unwind_WHAT...(): Unwind THIS frame's WHAT from the NEXT
frame.
frame_unwind_caller_WHAT...(): Unwind WHAT for NEXT stack frame's
real caller. Any inlined functions in NEXT's stack frame are
skipped. Use these to ignore any potentially inlined functions,
e.g. inlined into the first instruction of a library trampoline.
gdb/ * NEWS: Document inlined function support. * Makefile.in (SFILES): Add inline-frame.c. (COMMON_OBS): Add inline-frame.o. * block.c (contained_in): Rewrite to use lexical nesting. (block_linkage_function): Skip inlined function blocks. (block_inlined_p): New. * block.h (struct block): Update comment. (block_inlined_p): New prototype. * blockframe.c (get_frame_block): Handle inlined functions. (get_frame_function): Do not use block_linkage_function. (block_innermost_frame): Use get_frame_block and contained_in. * breakpoint.c (watchpoint_check): Remove extra reinit_frame_cache. Skip over inlined functions. Simplify epilogue check. (bpstat_check_breakpoint_conditions): Use get_stack_frame_id. Update comments. (set_momentary_breakpoint): Only accept non-inlined frames. (watch_command_1): Use frame_unwind_caller_pc and frame_unwind_caller_id instead of get_prev_frame. (until_break_command): Likewise. Use get_stack_frame_id. * buildsym.c (end_symtab): Set SYMBOL_SYMTAB for block functions. * dwarf2loc.c (dwarf_expr_frame_base): Use block_linkage_function. * dwarf2read.c (process_die): Handle DW_TAG_inlined_subroutine. (read_func_scope, new_symbol): Likewise. Handle arguments specially for inlined functions without call site information. (inherit_abstract_dies): Allow tag mismatch for inlined subroutines. (die_specification): Treat DW_AT_abstract_origin as a specification. (read_type_die): Handle DW_TAG_inlined_subroutine. * frame-unwind.c (frame_unwind_init): Add inline_frame_unwind. * frame.c (fprint_frame_id): Print inline depth. (fprint_frame_type): Handle INLINE_FRAME and SENTINEL_FRAME. (skip_inlined_frames, get_stack_frame_id): New. (frame_unwind_caller_id): Use skip_inlined_frames. (frame_id_inlined_p): New. (frame_id_eq): Make the logic match the comments. Add inline_depth check. (frame_id_inner): Handle inlined functions. (frame_unwind_pc): New function, copied from frame_unwind_caller_pc. (frame_unwind_caller_pc): Use skip_inlined_frames and frame_unwind_pc. (get_prev_frame_1): Check for inline frames. Split out frame allocation to get_prev_frame_raw. (get_prev_frame_raw): New function. (get_prev_frame): Handle inline frames. (get_frame_pc): Use frame_unwind_pc. (get_frame_address_in_block): Skip inlined frames on both sides. (pc_notcurrent): Delete. (find_frame_sal): Rewrite to handle inline call sites. Use get_frame_address_in_block. (deprecated_update_frame_pc_hack): Make static. * frame.h: Update comments. (struct frame_id): Add inline_depth. (enum frame_type): Add INLINE_FRAME. (frame_id_inlined_p, get_stack_frame_id): New prototypes. * gdbthread.h (struct thread_info): Add step_stack_frame_id field. * infcmd.c (set_step_frame): New function. (step_once): Use set_step_frame. Handle inlined functions. (until_next_command): Use set_step_frame. (finish_backward), finish_forward): Use get_stack_frame_id. (finish_command): Support inlined functions. * inferior.h (set_step_info): New prototype. * infrun.c (RESUME_ALL): Use minus_one_ptid. (clear_proceed_status): Clear step_stack_frame_id. (init_wait_for_inferior): Call clear_inline_frame_state. (init_execution_control_state): Make static. (set_step_info): New function. (init_thread_stepping_state): Do not set the symtab or line here. (stepped_in_from): New function. (handle_inferior_event): Handle inlined functions. Use set_step_info. (insert_step_resume_breakpoint_at_frame): Use get_stack_frame_id. (struct inferior_status): Add step_stack_frame_id. (save_inferior_status, restore_inferior_status): Save and restore step_stack_frame_id. * inline-frame.c, inline-frame.h: New files. * minsyms.c (prim_record_minimal_symbol_and_info): Use XCALLOC. * regcache.c (regcache_write_pc): Call reinit_frame_cache. * s390-tdep.c (s390_prologue_frame_unwind_cache): Handle INLINE_FRAME. * stack.c (frame_show_address): New. (print_frame_info, print_frame): Use it. (find_frame_funname): Use get_frame_function. Handle inlined blocks. (frame_info): Mark inlined functions. (backtrace_command_1): Use get_current_user_frame. (print_frame_local_vars, print_frame_label_vars): Update comments. (return_command): Refuse inlined functions. * symtab.c (lookup_symbol_aux_local): Stop at inlined function boundaries. (find_function_start_sal): Avoid inlined functions. (completion_list_add_fields): New function. (default_make_symbol_completion_list): Use it. Use block_static_block and block_global_block. Check for inlined functions. (skip_prologue_using_sal): Avoid line number comparison across inlining. * symtab.h (struct symbol): Add is_inlined. (SYMBOL_INLINED): New. * target.c (target_resume): Call clear_inline_frame_state. * valops.c (value_of_variable): Check block_inlined_p. gdb/doc/ * gdb.texinfo (Debugging Optimized Code): New chapter. (Compiling for Debugging): Reference it. Move some text to the new section. gdb/testsuite/ * gdb.base/break.exp: Add an XFAIL for gcc/36748. * gdb.cp/annota2.exp: Accept frames-invalid in more places. * gdb.opt/Makefile.in (EXECUTABLES): Update. * gdb.opt/clobbered-registers-O2.exp: Update to GPL v3. * gdb.opt/inline-bt.c, gdb.opt/inline-bt.exp, gdb.opt/inline-cmds.c, gdb.opt/inline-cmds.exp, gdb.opt/inline-locals.c, gdb.opt/inline-locals.exp, gdb.opt/inline-markers.c: New files. * lib/gdb.exp (skip_inline_frame_tests): New function. (skip_inline_var_tests): New function.
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get_stack_frame_WHAT...(): Get WHAT for THIS frame, but if THIS is
inlined, skip to the containing stack frame.
put_frame_WHAT...(): Put a value into this frame (unsafe, need to
invalidate the frame / regcache afterwards) (better name more
strongly hinting at its unsafeness)
safe_....(): Safer version of various functions, doesn't throw an
error (leave this for later?). Returns non-zero / non-NULL if the
request succeeds, zero / NULL otherwize.
Suffixes:
void /frame/_WHAT(): Read WHAT's value into the buffer parameter.
ULONGEST /frame/_WHAT_unsigned(): Return an unsigned value (the
alternative is *frame_unsigned_WHAT).
LONGEST /frame/_WHAT_signed(): Return WHAT signed value.
What:
/frame/_memory* (frame, coreaddr, len [, buf]): Extract/return
*memory.
/frame/_register* (frame, regnum [, buf]): extract/return register.
CORE_ADDR /frame/_{pc,sp,...} (frame): Resume address, innner most
stack *address, ...
*/
struct symtab_and_line;
struct frame_unwind;
struct frame_base;
2003-02-19 David Carlton <carlton@math.stanford.edu> * Makefile.in (SFILES): Add block.c. (block_h): New. (COMMON_OBS): Add block.o. (block.o): New. (x86-64-tdep.o): Add $(block_h). (values.o, valops.o, tracepoint.o, symtab.o, symmisc.o, symfile.o) (stack.o, printcmd.o, p-exp.tab.o, parse.o, objfiles.o) (objc-exp.tab.o, objc-lang.o, nlmread.o, mips-tdep.o, mdebugread.o) (m2-exp.tab.o, linespec.o, jv-lang.o, jv-exp.tab.o, infcmd.o) (f-valprint.o, findvar.o, f-exp.tab.o, expprint.o, coffread.o) (c-exp.tab.o, buildsym.o, breakpoint.o, blockframe.o, ax-gdb.o) (alpha-tdep.o, ada-lang.o, ada-exp.tab.o, mi-cmd-stack.o): Ditto. * value.h: Add opaque declaration for struct block. * parser-defs.h, objc-lang.h, buildsym.h, breakpoint.h: Ditto. * ada-lang.h: Ditto. * x86-64-tdep.c: #include "block.h" * values.c, valops.c, tracepoint.c, symtab.c, symmisc.c: Ditto. * symfile.c, stack.c, printcmd.c, p-exp.y, parse.c: Ditto. * objfiles.c, objc-exp.y, objc-lang.c, nlmread.c: Ditto. * mips-tdep.c, mdebugread.c, m2-exp.y, linespec.c: Ditto. * jv-lang.c, jv-exp.y, infcmd.c, f-valprint.c: Ditto. * findvar.c, f-exp.y, expprint.c, coffread.c, c-exp.y: Ditto. * buildsym.c, breakpoint.c, blockframe.c, ax-gdb.c: Ditto. * alpha-tdep.c, ada-lang.c, ada-exp.y: Ditto. * blockframe.c (blockvector_for_pc_sect): Move to "block.c". (blockvector_for_pc, block_for_pc_sect, block_for_pc): Ditto. * symtab.c (block_function): Ditto. (contained_in): Ditto. * frame.h: Move block_for_pc and block_for_pc_sect declarations to block.h. Add opaque declaration for struct block. * symtab.h: Move block_function and contained_in declarations to block.h. Add opaque declarations for struct block, struct blockvector. (struct block): Move to block.h. (struct blockvector): Ditto. (BLOCK_START, BLOCK_END, BLOCK_FUNCTION, BLOCK_SUPERBLOCK) (BLOCK_GCC_COMPILED, BLOCK_HASHTABLE, BLOCK_NSYMS, BLOCK_SYM) (BLOCK_BUCKETS, BLOCK_BUCKET, BLOCK_HASHTABLE_SIZE) (ALL_BLOCK_SYMBOLS, BLOCK_SHOULD_SORT, BLOCKVECTOR_NBLOCKS) (BLOCKVECTOR_BLOCK, GLOBAL_BLOCK, STATIC_BLOCK, FIRST_LOCAL_BLOCK): Ditto. * block.c: New file. * block.h: New file. 2003-02-19 David Carlton <carlton@math.stanford.edu> * mi-cmd-stack.c: #include "block.h"
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struct block;
struct gdbarch;
struct ui_file;
"tfind" across unavailable-stack frames. Like when stepping, the current stack frame location is expected to be printed as result of tfind command, if that results in moving to a different function. In tfind_1 we see: if (from_tty && (has_stack_frames () || traceframe_number >= 0)) { enum print_what print_what; /* NOTE: in imitation of the step command, try to determine whether we have made a transition from one function to another. If so, we'll print the "stack frame" (ie. the new function and it's arguments) -- otherwise we'll just show the new source line. */ if (frame_id_eq (old_frame_id, get_frame_id (get_current_frame ()))) print_what = SRC_LINE; else print_what = SRC_AND_LOC; print_stack_frame (get_selected_frame (NULL), 1, print_what, 1); do_displays (); } However, when we haven't collected any registers in the tracepoint (collect $regs), that doesn't actually work: (gdb) tstart (gdb) info tracepoints Num Type Disp Enb Address What 1 tracepoint keep y 0x080483b7 in func0 at ../.././../git/gdb/testsuite/gdb.trace/circ.c:28 collect testload installed on target 2 tracepoint keep y 0x080483bc in func1 at ../.././../git/gdb/testsuite/gdb.trace/circ.c:32 collect testload installed on target (gdb) c Continuing. Breakpoint 3, end () at ../.././../git/gdb/testsuite/gdb.trace/circ.c:72 72 } (gdb) tstop (gdb) tfind start Found trace frame 0, tracepoint 1 #0 func0 () at ../.././../git/gdb/testsuite/gdb.trace/circ.c:28 28 } (gdb) tfind Found trace frame 1, tracepoint 2 32 } (gdb) When we don't have info about the stack available (UNWIND_UNAVAILABLE), frames end up with outer_frame_id as frame ID. And in the scenario above, the issue is that both frames before and after the second tfind (the frames for func0 an func1) have the same id (outer_frame_id), so the frame_id_eq check returns false, even though the frames were of different functions. GDB knows that, because the PC is inferred from the tracepoint's address, even if no registers were collected. To fix this, this patch adds support for frame ids with a valid code address, but <unavailable> stack address, and then makes the unwinders use that instead of the catch-all outer_frame_id for such frames. The frame_id_eq check in tfind_1 then automatically does the right thing as expected. I tested with --directory=gdb.trace/ , before/after the patch, and compared the resulting gdb.logs, then adjusted the tests to expect the extra output that came out. Turns out that was only circ.exp, the original test that actually brought this issue to light. Tested on x86_64 Fedora 17, native and gdbserver. gdb/ 2013-12-17 Pedro Alves <palves@redhat.com> * frame.h (enum frame_id_stack_status): New enum. (struct frame_id) <stack_addr>: Adjust comment. <stack_addr_p>: Delete field, replaced with ... <stack_status>: ... this new field. (frame_id_build_unavailable_stack): Declare. * frame.c (frame_addr_hash, fprint_field, outer_frame_id) (frame_id_build_special): Adjust. (frame_id_build_unavailable_stack): New function. (frame_id_build, frame_id_build_wild): Adjust. (frame_id_p, frame_id_eq, frame_id_inner): Adjust to take into account frames with unavailable stack. * amd64-tdep.c (amd64_frame_this_id) (amd64_sigtramp_frame_this_id, amd64_epilogue_frame_this_id): Use frame_id_build_unavailable_stack. * dwarf2-frame.c (dwarf2_frame_this_id): Likewise. * i386-tdep.c (i386_frame_this_id, i386_epilogue_frame_this_id) (i386_sigtramp_frame_this_id): Likewise. gdb/testsuite/ 2013-12-17 Pedro Alves <palves@redhat.com> * gdb.trace/circ.exp: Expect frame info to be printed when switching between frames with unavailable stack, but different functions.
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/* Status of a given frame's stack. */
enum frame_id_stack_status
{
/* Stack address is invalid. E.g., this frame is the outermost
(i.e., _start), and the stack hasn't been setup yet. */
FID_STACK_INVALID = 0,
/* Stack address is valid, and is found in the stack_addr field. */
FID_STACK_VALID = 1,
/* Stack address is unavailable. I.e., there's a valid stack, but
we don't know where it is (because memory or registers we'd
compute it from were not collected). */
FID_STACK_UNAVAILABLE = -1
};
/* The frame object. */
struct frame_info;
/* The frame object's ID. This provides a per-frame unique identifier
that can be used to relocate a `struct frame_info' after a target
resume or a frame cache destruct. It of course assumes that the
inferior hasn't unwound the stack past that frame. */
struct frame_id
{
/* The frame's stack address. This shall be constant through out
the lifetime of a frame. Note that this requirement applies to
not just the function body, but also the prologue and (in theory
at least) the epilogue. Since that value needs to fall either on
the boundary, or within the frame's address range, the frame's
outer-most address (the inner-most address of the previous frame)
is used. Watch out for all the legacy targets that still use the
function pointer register or stack pointer register. They are
wrong.
"tfind" across unavailable-stack frames. Like when stepping, the current stack frame location is expected to be printed as result of tfind command, if that results in moving to a different function. In tfind_1 we see: if (from_tty && (has_stack_frames () || traceframe_number >= 0)) { enum print_what print_what; /* NOTE: in imitation of the step command, try to determine whether we have made a transition from one function to another. If so, we'll print the "stack frame" (ie. the new function and it's arguments) -- otherwise we'll just show the new source line. */ if (frame_id_eq (old_frame_id, get_frame_id (get_current_frame ()))) print_what = SRC_LINE; else print_what = SRC_AND_LOC; print_stack_frame (get_selected_frame (NULL), 1, print_what, 1); do_displays (); } However, when we haven't collected any registers in the tracepoint (collect $regs), that doesn't actually work: (gdb) tstart (gdb) info tracepoints Num Type Disp Enb Address What 1 tracepoint keep y 0x080483b7 in func0 at ../.././../git/gdb/testsuite/gdb.trace/circ.c:28 collect testload installed on target 2 tracepoint keep y 0x080483bc in func1 at ../.././../git/gdb/testsuite/gdb.trace/circ.c:32 collect testload installed on target (gdb) c Continuing. Breakpoint 3, end () at ../.././../git/gdb/testsuite/gdb.trace/circ.c:72 72 } (gdb) tstop (gdb) tfind start Found trace frame 0, tracepoint 1 #0 func0 () at ../.././../git/gdb/testsuite/gdb.trace/circ.c:28 28 } (gdb) tfind Found trace frame 1, tracepoint 2 32 } (gdb) When we don't have info about the stack available (UNWIND_UNAVAILABLE), frames end up with outer_frame_id as frame ID. And in the scenario above, the issue is that both frames before and after the second tfind (the frames for func0 an func1) have the same id (outer_frame_id), so the frame_id_eq check returns false, even though the frames were of different functions. GDB knows that, because the PC is inferred from the tracepoint's address, even if no registers were collected. To fix this, this patch adds support for frame ids with a valid code address, but <unavailable> stack address, and then makes the unwinders use that instead of the catch-all outer_frame_id for such frames. The frame_id_eq check in tfind_1 then automatically does the right thing as expected. I tested with --directory=gdb.trace/ , before/after the patch, and compared the resulting gdb.logs, then adjusted the tests to expect the extra output that came out. Turns out that was only circ.exp, the original test that actually brought this issue to light. Tested on x86_64 Fedora 17, native and gdbserver. gdb/ 2013-12-17 Pedro Alves <palves@redhat.com> * frame.h (enum frame_id_stack_status): New enum. (struct frame_id) <stack_addr>: Adjust comment. <stack_addr_p>: Delete field, replaced with ... <stack_status>: ... this new field. (frame_id_build_unavailable_stack): Declare. * frame.c (frame_addr_hash, fprint_field, outer_frame_id) (frame_id_build_special): Adjust. (frame_id_build_unavailable_stack): New function. (frame_id_build, frame_id_build_wild): Adjust. (frame_id_p, frame_id_eq, frame_id_inner): Adjust to take into account frames with unavailable stack. * amd64-tdep.c (amd64_frame_this_id) (amd64_sigtramp_frame_this_id, amd64_epilogue_frame_this_id): Use frame_id_build_unavailable_stack. * dwarf2-frame.c (dwarf2_frame_this_id): Likewise. * i386-tdep.c (i386_frame_this_id, i386_epilogue_frame_this_id) (i386_sigtramp_frame_this_id): Likewise. gdb/testsuite/ 2013-12-17 Pedro Alves <palves@redhat.com> * gdb.trace/circ.exp: Expect frame info to be printed when switching between frames with unavailable stack, but different functions.
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This field is valid only if frame_id.stack_status is
FID_STACK_VALID. It will be 0 for other
FID_STACK_... statuses. */
CORE_ADDR stack_addr;
/* The frame's code address. This shall be constant through out the
lifetime of the frame. While the PC (a.k.a. resume address)
changes as the function is executed, this code address cannot.
Typically, it is set to the address of the entry point of the
frame's function (as returned by get_frame_func).
gdb/ * NEWS: Document inlined function support. * Makefile.in (SFILES): Add inline-frame.c. (COMMON_OBS): Add inline-frame.o. * block.c (contained_in): Rewrite to use lexical nesting. (block_linkage_function): Skip inlined function blocks. (block_inlined_p): New. * block.h (struct block): Update comment. (block_inlined_p): New prototype. * blockframe.c (get_frame_block): Handle inlined functions. (get_frame_function): Do not use block_linkage_function. (block_innermost_frame): Use get_frame_block and contained_in. * breakpoint.c (watchpoint_check): Remove extra reinit_frame_cache. Skip over inlined functions. Simplify epilogue check. (bpstat_check_breakpoint_conditions): Use get_stack_frame_id. Update comments. (set_momentary_breakpoint): Only accept non-inlined frames. (watch_command_1): Use frame_unwind_caller_pc and frame_unwind_caller_id instead of get_prev_frame. (until_break_command): Likewise. Use get_stack_frame_id. * buildsym.c (end_symtab): Set SYMBOL_SYMTAB for block functions. * dwarf2loc.c (dwarf_expr_frame_base): Use block_linkage_function. * dwarf2read.c (process_die): Handle DW_TAG_inlined_subroutine. (read_func_scope, new_symbol): Likewise. Handle arguments specially for inlined functions without call site information. (inherit_abstract_dies): Allow tag mismatch for inlined subroutines. (die_specification): Treat DW_AT_abstract_origin as a specification. (read_type_die): Handle DW_TAG_inlined_subroutine. * frame-unwind.c (frame_unwind_init): Add inline_frame_unwind. * frame.c (fprint_frame_id): Print inline depth. (fprint_frame_type): Handle INLINE_FRAME and SENTINEL_FRAME. (skip_inlined_frames, get_stack_frame_id): New. (frame_unwind_caller_id): Use skip_inlined_frames. (frame_id_inlined_p): New. (frame_id_eq): Make the logic match the comments. Add inline_depth check. (frame_id_inner): Handle inlined functions. (frame_unwind_pc): New function, copied from frame_unwind_caller_pc. (frame_unwind_caller_pc): Use skip_inlined_frames and frame_unwind_pc. (get_prev_frame_1): Check for inline frames. Split out frame allocation to get_prev_frame_raw. (get_prev_frame_raw): New function. (get_prev_frame): Handle inline frames. (get_frame_pc): Use frame_unwind_pc. (get_frame_address_in_block): Skip inlined frames on both sides. (pc_notcurrent): Delete. (find_frame_sal): Rewrite to handle inline call sites. Use get_frame_address_in_block. (deprecated_update_frame_pc_hack): Make static. * frame.h: Update comments. (struct frame_id): Add inline_depth. (enum frame_type): Add INLINE_FRAME. (frame_id_inlined_p, get_stack_frame_id): New prototypes. * gdbthread.h (struct thread_info): Add step_stack_frame_id field. * infcmd.c (set_step_frame): New function. (step_once): Use set_step_frame. Handle inlined functions. (until_next_command): Use set_step_frame. (finish_backward), finish_forward): Use get_stack_frame_id. (finish_command): Support inlined functions. * inferior.h (set_step_info): New prototype. * infrun.c (RESUME_ALL): Use minus_one_ptid. (clear_proceed_status): Clear step_stack_frame_id. (init_wait_for_inferior): Call clear_inline_frame_state. (init_execution_control_state): Make static. (set_step_info): New function. (init_thread_stepping_state): Do not set the symtab or line here. (stepped_in_from): New function. (handle_inferior_event): Handle inlined functions. Use set_step_info. (insert_step_resume_breakpoint_at_frame): Use get_stack_frame_id. (struct inferior_status): Add step_stack_frame_id. (save_inferior_status, restore_inferior_status): Save and restore step_stack_frame_id. * inline-frame.c, inline-frame.h: New files. * minsyms.c (prim_record_minimal_symbol_and_info): Use XCALLOC. * regcache.c (regcache_write_pc): Call reinit_frame_cache. * s390-tdep.c (s390_prologue_frame_unwind_cache): Handle INLINE_FRAME. * stack.c (frame_show_address): New. (print_frame_info, print_frame): Use it. (find_frame_funname): Use get_frame_function. Handle inlined blocks. (frame_info): Mark inlined functions. (backtrace_command_1): Use get_current_user_frame. (print_frame_local_vars, print_frame_label_vars): Update comments. (return_command): Refuse inlined functions. * symtab.c (lookup_symbol_aux_local): Stop at inlined function boundaries. (find_function_start_sal): Avoid inlined functions. (completion_list_add_fields): New function. (default_make_symbol_completion_list): Use it. Use block_static_block and block_global_block. Check for inlined functions. (skip_prologue_using_sal): Avoid line number comparison across inlining. * symtab.h (struct symbol): Add is_inlined. (SYMBOL_INLINED): New. * target.c (target_resume): Call clear_inline_frame_state. * valops.c (value_of_variable): Check block_inlined_p. gdb/doc/ * gdb.texinfo (Debugging Optimized Code): New chapter. (Compiling for Debugging): Reference it. Move some text to the new section. gdb/testsuite/ * gdb.base/break.exp: Add an XFAIL for gcc/36748. * gdb.cp/annota2.exp: Accept frames-invalid in more places. * gdb.opt/Makefile.in (EXECUTABLES): Update. * gdb.opt/clobbered-registers-O2.exp: Update to GPL v3. * gdb.opt/inline-bt.c, gdb.opt/inline-bt.exp, gdb.opt/inline-cmds.c, gdb.opt/inline-cmds.exp, gdb.opt/inline-locals.c, gdb.opt/inline-locals.exp, gdb.opt/inline-markers.c: New files. * lib/gdb.exp (skip_inline_frame_tests): New function. (skip_inline_var_tests): New function.
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For inlined functions (INLINE_DEPTH != 0), this is the address of
the first executed instruction in the block corresponding to the
inlined function.
This field is valid only if code_addr_p is true. Otherwise, this
frame is considered to have a wildcard code address, i.e. one that
matches every address value in frame comparisons. */
CORE_ADDR code_addr;
/* The frame's special address. This shall be constant through out the
lifetime of the frame. This is used for architectures that may have
frames that do not change the stack but are still distinct and have
some form of distinct identifier (e.g. the ia64 which uses a 2nd
stack for registers). This field is treated as unordered - i.e. will
not be used in frame ordering comparisons.
This field is valid only if special_addr_p is true. Otherwise, this
frame is considered to have a wildcard special address, i.e. one that
matches every address value in frame comparisons. */
CORE_ADDR special_addr;
/* Flags to indicate the above fields have valid contents. */
"tfind" across unavailable-stack frames. Like when stepping, the current stack frame location is expected to be printed as result of tfind command, if that results in moving to a different function. In tfind_1 we see: if (from_tty && (has_stack_frames () || traceframe_number >= 0)) { enum print_what print_what; /* NOTE: in imitation of the step command, try to determine whether we have made a transition from one function to another. If so, we'll print the "stack frame" (ie. the new function and it's arguments) -- otherwise we'll just show the new source line. */ if (frame_id_eq (old_frame_id, get_frame_id (get_current_frame ()))) print_what = SRC_LINE; else print_what = SRC_AND_LOC; print_stack_frame (get_selected_frame (NULL), 1, print_what, 1); do_displays (); } However, when we haven't collected any registers in the tracepoint (collect $regs), that doesn't actually work: (gdb) tstart (gdb) info tracepoints Num Type Disp Enb Address What 1 tracepoint keep y 0x080483b7 in func0 at ../.././../git/gdb/testsuite/gdb.trace/circ.c:28 collect testload installed on target 2 tracepoint keep y 0x080483bc in func1 at ../.././../git/gdb/testsuite/gdb.trace/circ.c:32 collect testload installed on target (gdb) c Continuing. Breakpoint 3, end () at ../.././../git/gdb/testsuite/gdb.trace/circ.c:72 72 } (gdb) tstop (gdb) tfind start Found trace frame 0, tracepoint 1 #0 func0 () at ../.././../git/gdb/testsuite/gdb.trace/circ.c:28 28 } (gdb) tfind Found trace frame 1, tracepoint 2 32 } (gdb) When we don't have info about the stack available (UNWIND_UNAVAILABLE), frames end up with outer_frame_id as frame ID. And in the scenario above, the issue is that both frames before and after the second tfind (the frames for func0 an func1) have the same id (outer_frame_id), so the frame_id_eq check returns false, even though the frames were of different functions. GDB knows that, because the PC is inferred from the tracepoint's address, even if no registers were collected. To fix this, this patch adds support for frame ids with a valid code address, but <unavailable> stack address, and then makes the unwinders use that instead of the catch-all outer_frame_id for such frames. The frame_id_eq check in tfind_1 then automatically does the right thing as expected. I tested with --directory=gdb.trace/ , before/after the patch, and compared the resulting gdb.logs, then adjusted the tests to expect the extra output that came out. Turns out that was only circ.exp, the original test that actually brought this issue to light. Tested on x86_64 Fedora 17, native and gdbserver. gdb/ 2013-12-17 Pedro Alves <palves@redhat.com> * frame.h (enum frame_id_stack_status): New enum. (struct frame_id) <stack_addr>: Adjust comment. <stack_addr_p>: Delete field, replaced with ... <stack_status>: ... this new field. (frame_id_build_unavailable_stack): Declare. * frame.c (frame_addr_hash, fprint_field, outer_frame_id) (frame_id_build_special): Adjust. (frame_id_build_unavailable_stack): New function. (frame_id_build, frame_id_build_wild): Adjust. (frame_id_p, frame_id_eq, frame_id_inner): Adjust to take into account frames with unavailable stack. * amd64-tdep.c (amd64_frame_this_id) (amd64_sigtramp_frame_this_id, amd64_epilogue_frame_this_id): Use frame_id_build_unavailable_stack. * dwarf2-frame.c (dwarf2_frame_this_id): Likewise. * i386-tdep.c (i386_frame_this_id, i386_epilogue_frame_this_id) (i386_sigtramp_frame_this_id): Likewise. gdb/testsuite/ 2013-12-17 Pedro Alves <palves@redhat.com> * gdb.trace/circ.exp: Expect frame info to be printed when switching between frames with unavailable stack, but different functions.
2013-12-17 21:47:36 +01:00
ENUM_BITFIELD(frame_id_stack_status) stack_status : 2;
unsigned int code_addr_p : 1;
unsigned int special_addr_p : 1;
gdb/ * NEWS: Document inlined function support. * Makefile.in (SFILES): Add inline-frame.c. (COMMON_OBS): Add inline-frame.o. * block.c (contained_in): Rewrite to use lexical nesting. (block_linkage_function): Skip inlined function blocks. (block_inlined_p): New. * block.h (struct block): Update comment. (block_inlined_p): New prototype. * blockframe.c (get_frame_block): Handle inlined functions. (get_frame_function): Do not use block_linkage_function. (block_innermost_frame): Use get_frame_block and contained_in. * breakpoint.c (watchpoint_check): Remove extra reinit_frame_cache. Skip over inlined functions. Simplify epilogue check. (bpstat_check_breakpoint_conditions): Use get_stack_frame_id. Update comments. (set_momentary_breakpoint): Only accept non-inlined frames. (watch_command_1): Use frame_unwind_caller_pc and frame_unwind_caller_id instead of get_prev_frame. (until_break_command): Likewise. Use get_stack_frame_id. * buildsym.c (end_symtab): Set SYMBOL_SYMTAB for block functions. * dwarf2loc.c (dwarf_expr_frame_base): Use block_linkage_function. * dwarf2read.c (process_die): Handle DW_TAG_inlined_subroutine. (read_func_scope, new_symbol): Likewise. Handle arguments specially for inlined functions without call site information. (inherit_abstract_dies): Allow tag mismatch for inlined subroutines. (die_specification): Treat DW_AT_abstract_origin as a specification. (read_type_die): Handle DW_TAG_inlined_subroutine. * frame-unwind.c (frame_unwind_init): Add inline_frame_unwind. * frame.c (fprint_frame_id): Print inline depth. (fprint_frame_type): Handle INLINE_FRAME and SENTINEL_FRAME. (skip_inlined_frames, get_stack_frame_id): New. (frame_unwind_caller_id): Use skip_inlined_frames. (frame_id_inlined_p): New. (frame_id_eq): Make the logic match the comments. Add inline_depth check. (frame_id_inner): Handle inlined functions. (frame_unwind_pc): New function, copied from frame_unwind_caller_pc. (frame_unwind_caller_pc): Use skip_inlined_frames and frame_unwind_pc. (get_prev_frame_1): Check for inline frames. Split out frame allocation to get_prev_frame_raw. (get_prev_frame_raw): New function. (get_prev_frame): Handle inline frames. (get_frame_pc): Use frame_unwind_pc. (get_frame_address_in_block): Skip inlined frames on both sides. (pc_notcurrent): Delete. (find_frame_sal): Rewrite to handle inline call sites. Use get_frame_address_in_block. (deprecated_update_frame_pc_hack): Make static. * frame.h: Update comments. (struct frame_id): Add inline_depth. (enum frame_type): Add INLINE_FRAME. (frame_id_inlined_p, get_stack_frame_id): New prototypes. * gdbthread.h (struct thread_info): Add step_stack_frame_id field. * infcmd.c (set_step_frame): New function. (step_once): Use set_step_frame. Handle inlined functions. (until_next_command): Use set_step_frame. (finish_backward), finish_forward): Use get_stack_frame_id. (finish_command): Support inlined functions. * inferior.h (set_step_info): New prototype. * infrun.c (RESUME_ALL): Use minus_one_ptid. (clear_proceed_status): Clear step_stack_frame_id. (init_wait_for_inferior): Call clear_inline_frame_state. (init_execution_control_state): Make static. (set_step_info): New function. (init_thread_stepping_state): Do not set the symtab or line here. (stepped_in_from): New function. (handle_inferior_event): Handle inlined functions. Use set_step_info. (insert_step_resume_breakpoint_at_frame): Use get_stack_frame_id. (struct inferior_status): Add step_stack_frame_id. (save_inferior_status, restore_inferior_status): Save and restore step_stack_frame_id. * inline-frame.c, inline-frame.h: New files. * minsyms.c (prim_record_minimal_symbol_and_info): Use XCALLOC. * regcache.c (regcache_write_pc): Call reinit_frame_cache. * s390-tdep.c (s390_prologue_frame_unwind_cache): Handle INLINE_FRAME. * stack.c (frame_show_address): New. (print_frame_info, print_frame): Use it. (find_frame_funname): Use get_frame_function. Handle inlined blocks. (frame_info): Mark inlined functions. (backtrace_command_1): Use get_current_user_frame. (print_frame_local_vars, print_frame_label_vars): Update comments. (return_command): Refuse inlined functions. * symtab.c (lookup_symbol_aux_local): Stop at inlined function boundaries. (find_function_start_sal): Avoid inlined functions. (completion_list_add_fields): New function. (default_make_symbol_completion_list): Use it. Use block_static_block and block_global_block. Check for inlined functions. (skip_prologue_using_sal): Avoid line number comparison across inlining. * symtab.h (struct symbol): Add is_inlined. (SYMBOL_INLINED): New. * target.c (target_resume): Call clear_inline_frame_state. * valops.c (value_of_variable): Check block_inlined_p. gdb/doc/ * gdb.texinfo (Debugging Optimized Code): New chapter. (Compiling for Debugging): Reference it. Move some text to the new section. gdb/testsuite/ * gdb.base/break.exp: Add an XFAIL for gcc/36748. * gdb.cp/annota2.exp: Accept frames-invalid in more places. * gdb.opt/Makefile.in (EXECUTABLES): Update. * gdb.opt/clobbered-registers-O2.exp: Update to GPL v3. * gdb.opt/inline-bt.c, gdb.opt/inline-bt.exp, gdb.opt/inline-cmds.c, gdb.opt/inline-cmds.exp, gdb.opt/inline-locals.c, gdb.opt/inline-locals.exp, gdb.opt/inline-markers.c: New files. * lib/gdb.exp (skip_inline_frame_tests): New function. (skip_inline_var_tests): New function.
2009-06-28 02:20:24 +02:00
/* It is non-zero for a frame made up by GDB without stack data
representation in inferior, such as INLINE_FRAME or TAILCALL_FRAME.
Caller of inlined function will have it zero, each more inner called frame
will have it increasingly one, two etc. Similarly for TAILCALL_FRAME. */
int artificial_depth;
};
/* Methods for constructing and comparing Frame IDs. */
/* For convenience. All fields are zero. This means "there is no frame". */
extern const struct frame_id null_frame_id;
/* This means "there is no frame ID, but there is a frame". It should be
replaced by best-effort frame IDs for the outermost frame, somehow.
The implementation is only special_addr_p set. */
extern const struct frame_id outer_frame_id;
Convert frame unwinders to use the current frame and "struct value". * frame.c (frame_debug): Make global. (get_frame_id): Pass this frame to unwinder routines. (frame_pc_unwind): Remove unused unwind->prev_pc support. (do_frame_register_read): Do not discard the return value of frame_register_read. (frame_register_unwind): Remove debug messages. Use frame_unwind_register_value. (frame_unwind_register_value, get_frame_register_value): New functions. (create_new_frame, get_frame_base_address, get_frame_locals_address) (get_frame_args_address, get_frame_type): Pass this frame to unwinder routines. (frame_cleanup_after_sniffer, frame_prepare_for_sniffer): New functions. * frame.h: Update comments. (frame_debug, frame_unwind_register_value, get_frame_register_value) (frame_prepare_for_sniffer): Declare. * frame-unwind.h: Update comments and parameter names. (default_frame_sniffer): Declare. (frame_prev_register_ftype): Return a struct value *. (struct frame_unwind): Remove prev_pc member. (frame_unwind_sniffer_ftype, frame_unwind_append_sniffer): Delete. (frame_unwind_append_unwinder, frame_unwind_got_optimized) (frame_unwind_got_register, frame_unwind_got_memory) (frame_unwind_got_constant, frame_unwind_got_address): Declare. * frame-base.h: Update comments and parameter names. * valops.c (value_fetch_lazy): Use get_frame_register_value. Iterate if necessary. Add debugging output. * sentinel-frame.c (sentinel_frame_prev_register) (sentinel_frame_this_id): Update for new signature. (sentinel_frame_prev_pc): Delete. (sentinel_frame_unwinder): Remove prev_pc. * ia64-tdep.c (ia64_libunwind_frame_unwind): Do not initialize prev_pc. * libunwind-frame.c (libunwind_frame_unwind): Likewise. * frame-unwind.c (struct frame_unwind_table_entry): Remove sniffer. (frame_unwind_append_sniffer): Delete. (frame_unwind_append_unwinder): New function. (frame_unwind_find_by_frame): Take this frame. Only use sniffers from unwinders. Use frame_prepare_for_sniffer. (default_frame_sniffer, frame_unwind_got_optimized) (frame_unwind_got_register, frame_unwind_got_memory) (frame_unwind_got_constant, frame_unwind_got_address): New functions. * dummy-frame.c (dummy_frame_sniffer): Use gdbarch_dummy_id. (dummy_frame_prev_register, dummy_frame_this_id): Update for new signature. * gdbarch.sh: Replace unwind_dummy_id with dummy_id. * gdbarch.c, gdbarch.c: Regenerated. * frame-base.c (default_frame_base_address) (default_frame_locals_address, default_frame_args_address): Update for new signature. (frame_base_find_by_frame): Pass this frame to unwinder routines. * infcall.c (call_function_by_hand): Update comments. * Makefile.in (frame-unwind.o): Update dependencies. * gdbint.texinfo (Stack Frames): New chapter. (Algorithms): Move Frames text to the new chapter. (Target Conditionals): Delete SAVE_DUMMY_FRAME_TOS. Document gdbarch_dummy_id instead of gdbarch_unwind_dummy_id.
2008-04-30 23:16:46 +02:00
/* Flag to control debugging. */
gdb/ * dwarf2loc.c (entry_values_debug): Add 'unsigned'. (_initialize_dwarf2loc): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * dwarf2loc.h: Update the declaration of 'entry_values_debug'. * dwarf2read.c (dwarf2_die_debug): Add 'unsigned'. (_initialize_dwarf2_read): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * darwin-nat.c (dwarwin_debug_flag): Add 'unsigned'. (_initialize_darwin_inferior): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * frame.c (frame_debug): Add 'unsigned'. (_intialize_frame): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * frame.h: Update the declaration of 'frame_debug'. * gdbtypes.c (overload_debug): Add 'unsigned'. (_initialize_gdbtypes): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * inferior.h: Update declaration of 'debug_infrun'. * infrun.c (debug_infrun): Add 'unsigned'. (_initialize_infrun): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * jit.c (jit_debug): Add 'unsigned'. (_initialize_jit): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * linux-nat.c (debug_linux_nat): Add 'unsigned'. (_initialize_linux_nat): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * linux-thread-db.c (libthread_db_debug): Add 'unsigned'. (_initialize_thread_db): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * machoread.c (mach_o_debug_level): Add 'unsigned'. (_initialize_machoread): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * mi/mi-cmd-var.c: Update the declaration of 'varobjdebug'. * microblaze-tdep.c (microblaze_debug_flag): Add 'unsigned'. (_initialize_microblaze_tdep): Call add_setshow_zuinteger_cmd intead of add_setshow_zinteger_cmd. * mips-tdep.c (mips_debug): Add 'unsigned'. (_initialize_mips_tdep): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * monitor.c (monitor_debug): Add 'unsigned'. (_initialize_remote_monitors): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * observer.c (observer_debug): Add 'unsigned'. (_initialize_observer): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * parse.c (expressiondebug): Add 'unsigned'. (_initialize_parse): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * record.c (record_debug): Add 'unsigned'. (_initialize_record): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * record.h: Update the declaration of 'record_debug'. * stap-probe.c (stap_expression_debug): Add 'unsigned'. (_initialize_stap_probe): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * serial.c (global_serial_debug_p): Add 'unsigned'. (_initialize_serial): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * solib-dsbt.c (solib_dsbt_debug): Add 'unsigned'. (_initialize_dsbt_solib): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * solib-frv.c (solib_frv_debug): Add 'unsigned'. (_initialize_frv_solib): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * target.c (targetdebug): Add 'unsigned'. (initialize_targets): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * valops.c (overload_debug): Add 'unsigned'. * varobj.c (varobjdebug): Add 'unsigned'. (_initialize_varobj): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * xtensa-tdep.c (xtensa_debug_level): Add 'unsigned'. (_initialize_xtensa_tdep): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * arch-utils.h: Remove the declaration of 'gdbarch_debug'. * gdbarch.sh (gdbarch_debug): Add 'unsigned'. (extern void _initialize_gdbarch): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * gdbarch.c, gdbarch.h: Re-generated.
2012-08-02 11:36:40 +02:00
extern unsigned int frame_debug;
Convert frame unwinders to use the current frame and "struct value". * frame.c (frame_debug): Make global. (get_frame_id): Pass this frame to unwinder routines. (frame_pc_unwind): Remove unused unwind->prev_pc support. (do_frame_register_read): Do not discard the return value of frame_register_read. (frame_register_unwind): Remove debug messages. Use frame_unwind_register_value. (frame_unwind_register_value, get_frame_register_value): New functions. (create_new_frame, get_frame_base_address, get_frame_locals_address) (get_frame_args_address, get_frame_type): Pass this frame to unwinder routines. (frame_cleanup_after_sniffer, frame_prepare_for_sniffer): New functions. * frame.h: Update comments. (frame_debug, frame_unwind_register_value, get_frame_register_value) (frame_prepare_for_sniffer): Declare. * frame-unwind.h: Update comments and parameter names. (default_frame_sniffer): Declare. (frame_prev_register_ftype): Return a struct value *. (struct frame_unwind): Remove prev_pc member. (frame_unwind_sniffer_ftype, frame_unwind_append_sniffer): Delete. (frame_unwind_append_unwinder, frame_unwind_got_optimized) (frame_unwind_got_register, frame_unwind_got_memory) (frame_unwind_got_constant, frame_unwind_got_address): Declare. * frame-base.h: Update comments and parameter names. * valops.c (value_fetch_lazy): Use get_frame_register_value. Iterate if necessary. Add debugging output. * sentinel-frame.c (sentinel_frame_prev_register) (sentinel_frame_this_id): Update for new signature. (sentinel_frame_prev_pc): Delete. (sentinel_frame_unwinder): Remove prev_pc. * ia64-tdep.c (ia64_libunwind_frame_unwind): Do not initialize prev_pc. * libunwind-frame.c (libunwind_frame_unwind): Likewise. * frame-unwind.c (struct frame_unwind_table_entry): Remove sniffer. (frame_unwind_append_sniffer): Delete. (frame_unwind_append_unwinder): New function. (frame_unwind_find_by_frame): Take this frame. Only use sniffers from unwinders. Use frame_prepare_for_sniffer. (default_frame_sniffer, frame_unwind_got_optimized) (frame_unwind_got_register, frame_unwind_got_memory) (frame_unwind_got_constant, frame_unwind_got_address): New functions. * dummy-frame.c (dummy_frame_sniffer): Use gdbarch_dummy_id. (dummy_frame_prev_register, dummy_frame_this_id): Update for new signature. * gdbarch.sh: Replace unwind_dummy_id with dummy_id. * gdbarch.c, gdbarch.c: Regenerated. * frame-base.c (default_frame_base_address) (default_frame_locals_address, default_frame_args_address): Update for new signature. (frame_base_find_by_frame): Pass this frame to unwinder routines. * infcall.c (call_function_by_hand): Update comments. * Makefile.in (frame-unwind.o): Update dependencies. * gdbint.texinfo (Stack Frames): New chapter. (Algorithms): Move Frames text to the new chapter. (Target Conditionals): Delete SAVE_DUMMY_FRAME_TOS. Document gdbarch_dummy_id instead of gdbarch_unwind_dummy_id.
2008-04-30 23:16:46 +02:00
/* Construct a frame ID. The first parameter is the frame's constant
stack address (typically the outer-bound), and the second the
frame's constant code address (typically the entry point).
The special identifier address is set to indicate a wild card. */
extern struct frame_id frame_id_build (CORE_ADDR stack_addr,
CORE_ADDR code_addr);
/* Construct a special frame ID. The first parameter is the frame's constant
stack address (typically the outer-bound), the second is the
frame's constant code address (typically the entry point),
2011-01-07 Michael Snyder <msnyder@vmware.com> * ada-lang.c: Comment cleanup, mostly periods and spaces. * ada-lang.h: Ditto. * ada-tasks.c: Ditto. * ada-valprint.c: Ditto. * aix-threads.c: Ditto. * alpha-linux-nat.c: Ditto. * alpha-linux-tdep.c: Ditto. * alpha-mdebug-tdep.c: Ditto. * alpha-nat.c: Ditto. * alpha-osf1-tdep.c: Ditto. * alpha-tdep.c: Ditto. * alphabsd-nat.c: Ditto. * alphabsd-tdep.c: Ditto. * amd64-darwin-tdep.c: Ditto. * amd64-linux-nat.c: Ditto. * amd64-linux-tdep.c: Ditto. * amd64-sol2-tdep.c: Ditto. * amd64-tdep.c: Ditto. * amd64-fbsd-tdep.c: Ditto. * amd64-nbsd-tdep.c: Ditto. * amd64-obsd-tdep.c: Ditto. * amd64-linux-nat.c: Ditto. * amd64-linux-tdep.c: Ditto. * arm-tdep.c: Ditto. * arm-tdep.h: Ditto. * armnbsd-nat.c: Ditto. * avr-tdep.c: Ditto. * bfin-tdep.c: Ditto. * bsd-kvm.c: Ditto. * c-typeprintc: Ditto. * c-valprint.c: Ditto. * coff-pe-read.h: Ditto. * coffreead.c: Ditto. * cris-tdep.c: Ditto. * d-lang.c: Ditto. * darwin-nat-info.c: Ditto. * darwin-nat.c: Ditto. * dbug-rom.c: Ditto. * dbxread.c: Ditto. * dcache.c: Ditto. * dcache.h: Ditto. * dec-thread.c: Ditto. * defs.h: Ditto. * demangle.c: Ditto. * dicos-tdep.c: Ditto. * dictionary.c: Ditto. * dictionary.h: Ditto. * dink32-rom.c: Ditto. * disasm.c: Ditto. * doublest.c: Ditto. * dsrec.c: Ditto. * dummy-frame.c: Ditto. * dwarf2-frame.c: Ditto. * dwarf2expr.c: Ditto. * dwarf2loc.c: Ditto. * dwarf2read.c: Ditto. * elfread.c: Ditto. * environ.c: Ditto. * eval.c: Ditto. * event-top.h: Ditto. * exceptions.c: Ditto. * exceptions.h: Ditto. * exec.c: Ditto. * expprint.c: Ditto. * expression.h: Ditto. * f-exp.y: Ditto. * f-lang.c: Ditto. * f-lang.h: Ditto. * f-typeprint.c: Ditto. * f-valprint.c: Ditto. * fbsd-nat.c: Ditto. * findvar.c: Ditto. * fork-child.c: Ditto. * frame.c: Ditto. * frame.h: Ditto. * frv-linux-tdep.c: Ditto. * frv-tdep.c: Ditto. * gcore.c: Ditto. * gdb-stabs.h: Ditto. * gdb_assert.h: Ditto. * gdb_string.h: Ditto. * gdb_thread_db.h: Ditto. * gdb_wait.h: Ditto. * gdbarch.sh: Ditto. * gdbcore.h: Ditto. * gdbthread.h: Ditto. * gdbtypes.c: Ditto. * gdbtypes.h: Ditto. * gnu-nat.c: Ditto. * gnu-nat.h: Ditto. * gnu-v2-abi.c: Ditto. * gnu-v3-abi.c: Ditto. * go32-nat.c: Ditto. * gdbarch.c: Regenerate. * gdbarch.h: Regenerate.
2011-01-07 20:36:19 +01:00
and the third parameter is the frame's special identifier address. */
extern struct frame_id frame_id_build_special (CORE_ADDR stack_addr,
CORE_ADDR code_addr,
CORE_ADDR special_addr);
"tfind" across unavailable-stack frames. Like when stepping, the current stack frame location is expected to be printed as result of tfind command, if that results in moving to a different function. In tfind_1 we see: if (from_tty && (has_stack_frames () || traceframe_number >= 0)) { enum print_what print_what; /* NOTE: in imitation of the step command, try to determine whether we have made a transition from one function to another. If so, we'll print the "stack frame" (ie. the new function and it's arguments) -- otherwise we'll just show the new source line. */ if (frame_id_eq (old_frame_id, get_frame_id (get_current_frame ()))) print_what = SRC_LINE; else print_what = SRC_AND_LOC; print_stack_frame (get_selected_frame (NULL), 1, print_what, 1); do_displays (); } However, when we haven't collected any registers in the tracepoint (collect $regs), that doesn't actually work: (gdb) tstart (gdb) info tracepoints Num Type Disp Enb Address What 1 tracepoint keep y 0x080483b7 in func0 at ../.././../git/gdb/testsuite/gdb.trace/circ.c:28 collect testload installed on target 2 tracepoint keep y 0x080483bc in func1 at ../.././../git/gdb/testsuite/gdb.trace/circ.c:32 collect testload installed on target (gdb) c Continuing. Breakpoint 3, end () at ../.././../git/gdb/testsuite/gdb.trace/circ.c:72 72 } (gdb) tstop (gdb) tfind start Found trace frame 0, tracepoint 1 #0 func0 () at ../.././../git/gdb/testsuite/gdb.trace/circ.c:28 28 } (gdb) tfind Found trace frame 1, tracepoint 2 32 } (gdb) When we don't have info about the stack available (UNWIND_UNAVAILABLE), frames end up with outer_frame_id as frame ID. And in the scenario above, the issue is that both frames before and after the second tfind (the frames for func0 an func1) have the same id (outer_frame_id), so the frame_id_eq check returns false, even though the frames were of different functions. GDB knows that, because the PC is inferred from the tracepoint's address, even if no registers were collected. To fix this, this patch adds support for frame ids with a valid code address, but <unavailable> stack address, and then makes the unwinders use that instead of the catch-all outer_frame_id for such frames. The frame_id_eq check in tfind_1 then automatically does the right thing as expected. I tested with --directory=gdb.trace/ , before/after the patch, and compared the resulting gdb.logs, then adjusted the tests to expect the extra output that came out. Turns out that was only circ.exp, the original test that actually brought this issue to light. Tested on x86_64 Fedora 17, native and gdbserver. gdb/ 2013-12-17 Pedro Alves <palves@redhat.com> * frame.h (enum frame_id_stack_status): New enum. (struct frame_id) <stack_addr>: Adjust comment. <stack_addr_p>: Delete field, replaced with ... <stack_status>: ... this new field. (frame_id_build_unavailable_stack): Declare. * frame.c (frame_addr_hash, fprint_field, outer_frame_id) (frame_id_build_special): Adjust. (frame_id_build_unavailable_stack): New function. (frame_id_build, frame_id_build_wild): Adjust. (frame_id_p, frame_id_eq, frame_id_inner): Adjust to take into account frames with unavailable stack. * amd64-tdep.c (amd64_frame_this_id) (amd64_sigtramp_frame_this_id, amd64_epilogue_frame_this_id): Use frame_id_build_unavailable_stack. * dwarf2-frame.c (dwarf2_frame_this_id): Likewise. * i386-tdep.c (i386_frame_this_id, i386_epilogue_frame_this_id) (i386_sigtramp_frame_this_id): Likewise. gdb/testsuite/ 2013-12-17 Pedro Alves <palves@redhat.com> * gdb.trace/circ.exp: Expect frame info to be printed when switching between frames with unavailable stack, but different functions.
2013-12-17 21:47:36 +01:00
/* Construct a frame ID representing a frame where the stack address
exists, but is unavailable. CODE_ADDR is the frame's constant code
address (typically the entry point). The special identifier
address is set to indicate a wild card. */
extern struct frame_id frame_id_build_unavailable_stack (CORE_ADDR code_addr);
/* Construct a frame ID representing a frame where the stack address
exists, but is unavailable. CODE_ADDR is the frame's constant code
address (typically the entry point). SPECIAL_ADDR is the special
identifier address. */
extern struct frame_id
frame_id_build_unavailable_stack_special (CORE_ADDR code_addr,
CORE_ADDR special_addr);
/* Construct a wild card frame ID. The parameter is the frame's constant
stack address (typically the outer-bound). The code address as well
as the special identifier address are set to indicate wild cards. */
extern struct frame_id frame_id_build_wild (CORE_ADDR stack_addr);
/* Returns non-zero when L is a valid frame (a valid frame has a
non-zero .base). The outermost frame is valid even without an
ID. */
extern int frame_id_p (struct frame_id l);
/* Returns non-zero when L is a valid frame representing a frame made up by GDB
without stack data representation in inferior, such as INLINE_FRAME or
TAILCALL_FRAME. */
extern int frame_id_artificial_p (struct frame_id l);
gdb/ * NEWS: Document inlined function support. * Makefile.in (SFILES): Add inline-frame.c. (COMMON_OBS): Add inline-frame.o. * block.c (contained_in): Rewrite to use lexical nesting. (block_linkage_function): Skip inlined function blocks. (block_inlined_p): New. * block.h (struct block): Update comment. (block_inlined_p): New prototype. * blockframe.c (get_frame_block): Handle inlined functions. (get_frame_function): Do not use block_linkage_function. (block_innermost_frame): Use get_frame_block and contained_in. * breakpoint.c (watchpoint_check): Remove extra reinit_frame_cache. Skip over inlined functions. Simplify epilogue check. (bpstat_check_breakpoint_conditions): Use get_stack_frame_id. Update comments. (set_momentary_breakpoint): Only accept non-inlined frames. (watch_command_1): Use frame_unwind_caller_pc and frame_unwind_caller_id instead of get_prev_frame. (until_break_command): Likewise. Use get_stack_frame_id. * buildsym.c (end_symtab): Set SYMBOL_SYMTAB for block functions. * dwarf2loc.c (dwarf_expr_frame_base): Use block_linkage_function. * dwarf2read.c (process_die): Handle DW_TAG_inlined_subroutine. (read_func_scope, new_symbol): Likewise. Handle arguments specially for inlined functions without call site information. (inherit_abstract_dies): Allow tag mismatch for inlined subroutines. (die_specification): Treat DW_AT_abstract_origin as a specification. (read_type_die): Handle DW_TAG_inlined_subroutine. * frame-unwind.c (frame_unwind_init): Add inline_frame_unwind. * frame.c (fprint_frame_id): Print inline depth. (fprint_frame_type): Handle INLINE_FRAME and SENTINEL_FRAME. (skip_inlined_frames, get_stack_frame_id): New. (frame_unwind_caller_id): Use skip_inlined_frames. (frame_id_inlined_p): New. (frame_id_eq): Make the logic match the comments. Add inline_depth check. (frame_id_inner): Handle inlined functions. (frame_unwind_pc): New function, copied from frame_unwind_caller_pc. (frame_unwind_caller_pc): Use skip_inlined_frames and frame_unwind_pc. (get_prev_frame_1): Check for inline frames. Split out frame allocation to get_prev_frame_raw. (get_prev_frame_raw): New function. (get_prev_frame): Handle inline frames. (get_frame_pc): Use frame_unwind_pc. (get_frame_address_in_block): Skip inlined frames on both sides. (pc_notcurrent): Delete. (find_frame_sal): Rewrite to handle inline call sites. Use get_frame_address_in_block. (deprecated_update_frame_pc_hack): Make static. * frame.h: Update comments. (struct frame_id): Add inline_depth. (enum frame_type): Add INLINE_FRAME. (frame_id_inlined_p, get_stack_frame_id): New prototypes. * gdbthread.h (struct thread_info): Add step_stack_frame_id field. * infcmd.c (set_step_frame): New function. (step_once): Use set_step_frame. Handle inlined functions. (until_next_command): Use set_step_frame. (finish_backward), finish_forward): Use get_stack_frame_id. (finish_command): Support inlined functions. * inferior.h (set_step_info): New prototype. * infrun.c (RESUME_ALL): Use minus_one_ptid. (clear_proceed_status): Clear step_stack_frame_id. (init_wait_for_inferior): Call clear_inline_frame_state. (init_execution_control_state): Make static. (set_step_info): New function. (init_thread_stepping_state): Do not set the symtab or line here. (stepped_in_from): New function. (handle_inferior_event): Handle inlined functions. Use set_step_info. (insert_step_resume_breakpoint_at_frame): Use get_stack_frame_id. (struct inferior_status): Add step_stack_frame_id. (save_inferior_status, restore_inferior_status): Save and restore step_stack_frame_id. * inline-frame.c, inline-frame.h: New files. * minsyms.c (prim_record_minimal_symbol_and_info): Use XCALLOC. * regcache.c (regcache_write_pc): Call reinit_frame_cache. * s390-tdep.c (s390_prologue_frame_unwind_cache): Handle INLINE_FRAME. * stack.c (frame_show_address): New. (print_frame_info, print_frame): Use it. (find_frame_funname): Use get_frame_function. Handle inlined blocks. (frame_info): Mark inlined functions. (backtrace_command_1): Use get_current_user_frame. (print_frame_local_vars, print_frame_label_vars): Update comments. (return_command): Refuse inlined functions. * symtab.c (lookup_symbol_aux_local): Stop at inlined function boundaries. (find_function_start_sal): Avoid inlined functions. (completion_list_add_fields): New function. (default_make_symbol_completion_list): Use it. Use block_static_block and block_global_block. Check for inlined functions. (skip_prologue_using_sal): Avoid line number comparison across inlining. * symtab.h (struct symbol): Add is_inlined. (SYMBOL_INLINED): New. * target.c (target_resume): Call clear_inline_frame_state. * valops.c (value_of_variable): Check block_inlined_p. gdb/doc/ * gdb.texinfo (Debugging Optimized Code): New chapter. (Compiling for Debugging): Reference it. Move some text to the new section. gdb/testsuite/ * gdb.base/break.exp: Add an XFAIL for gcc/36748. * gdb.cp/annota2.exp: Accept frames-invalid in more places. * gdb.opt/Makefile.in (EXECUTABLES): Update. * gdb.opt/clobbered-registers-O2.exp: Update to GPL v3. * gdb.opt/inline-bt.c, gdb.opt/inline-bt.exp, gdb.opt/inline-cmds.c, gdb.opt/inline-cmds.exp, gdb.opt/inline-locals.c, gdb.opt/inline-locals.exp, gdb.opt/inline-markers.c: New files. * lib/gdb.exp (skip_inline_frame_tests): New function. (skip_inline_var_tests): New function.
2009-06-28 02:20:24 +02:00
/* Returns non-zero when L and R identify the same frame, or, if
either L or R have a zero .func, then the same frame base. */
extern int frame_id_eq (struct frame_id l, struct frame_id r);
/* Write the internal representation of a frame ID on the specified
stream. */
extern void fprint_frame_id (struct ui_file *file, struct frame_id id);
/* Frame types. Some are real, some are signal trampolines, and some
are completely artificial (dummy). */
enum frame_type
{
/* A true stack frame, created by the target program during normal
execution. */
NORMAL_FRAME,
/* A fake frame, created by GDB when performing an inferior function
call. */
DUMMY_FRAME,
gdb/ * NEWS: Document inlined function support. * Makefile.in (SFILES): Add inline-frame.c. (COMMON_OBS): Add inline-frame.o. * block.c (contained_in): Rewrite to use lexical nesting. (block_linkage_function): Skip inlined function blocks. (block_inlined_p): New. * block.h (struct block): Update comment. (block_inlined_p): New prototype. * blockframe.c (get_frame_block): Handle inlined functions. (get_frame_function): Do not use block_linkage_function. (block_innermost_frame): Use get_frame_block and contained_in. * breakpoint.c (watchpoint_check): Remove extra reinit_frame_cache. Skip over inlined functions. Simplify epilogue check. (bpstat_check_breakpoint_conditions): Use get_stack_frame_id. Update comments. (set_momentary_breakpoint): Only accept non-inlined frames. (watch_command_1): Use frame_unwind_caller_pc and frame_unwind_caller_id instead of get_prev_frame. (until_break_command): Likewise. Use get_stack_frame_id. * buildsym.c (end_symtab): Set SYMBOL_SYMTAB for block functions. * dwarf2loc.c (dwarf_expr_frame_base): Use block_linkage_function. * dwarf2read.c (process_die): Handle DW_TAG_inlined_subroutine. (read_func_scope, new_symbol): Likewise. Handle arguments specially for inlined functions without call site information. (inherit_abstract_dies): Allow tag mismatch for inlined subroutines. (die_specification): Treat DW_AT_abstract_origin as a specification. (read_type_die): Handle DW_TAG_inlined_subroutine. * frame-unwind.c (frame_unwind_init): Add inline_frame_unwind. * frame.c (fprint_frame_id): Print inline depth. (fprint_frame_type): Handle INLINE_FRAME and SENTINEL_FRAME. (skip_inlined_frames, get_stack_frame_id): New. (frame_unwind_caller_id): Use skip_inlined_frames. (frame_id_inlined_p): New. (frame_id_eq): Make the logic match the comments. Add inline_depth check. (frame_id_inner): Handle inlined functions. (frame_unwind_pc): New function, copied from frame_unwind_caller_pc. (frame_unwind_caller_pc): Use skip_inlined_frames and frame_unwind_pc. (get_prev_frame_1): Check for inline frames. Split out frame allocation to get_prev_frame_raw. (get_prev_frame_raw): New function. (get_prev_frame): Handle inline frames. (get_frame_pc): Use frame_unwind_pc. (get_frame_address_in_block): Skip inlined frames on both sides. (pc_notcurrent): Delete. (find_frame_sal): Rewrite to handle inline call sites. Use get_frame_address_in_block. (deprecated_update_frame_pc_hack): Make static. * frame.h: Update comments. (struct frame_id): Add inline_depth. (enum frame_type): Add INLINE_FRAME. (frame_id_inlined_p, get_stack_frame_id): New prototypes. * gdbthread.h (struct thread_info): Add step_stack_frame_id field. * infcmd.c (set_step_frame): New function. (step_once): Use set_step_frame. Handle inlined functions. (until_next_command): Use set_step_frame. (finish_backward), finish_forward): Use get_stack_frame_id. (finish_command): Support inlined functions. * inferior.h (set_step_info): New prototype. * infrun.c (RESUME_ALL): Use minus_one_ptid. (clear_proceed_status): Clear step_stack_frame_id. (init_wait_for_inferior): Call clear_inline_frame_state. (init_execution_control_state): Make static. (set_step_info): New function. (init_thread_stepping_state): Do not set the symtab or line here. (stepped_in_from): New function. (handle_inferior_event): Handle inlined functions. Use set_step_info. (insert_step_resume_breakpoint_at_frame): Use get_stack_frame_id. (struct inferior_status): Add step_stack_frame_id. (save_inferior_status, restore_inferior_status): Save and restore step_stack_frame_id. * inline-frame.c, inline-frame.h: New files. * minsyms.c (prim_record_minimal_symbol_and_info): Use XCALLOC. * regcache.c (regcache_write_pc): Call reinit_frame_cache. * s390-tdep.c (s390_prologue_frame_unwind_cache): Handle INLINE_FRAME. * stack.c (frame_show_address): New. (print_frame_info, print_frame): Use it. (find_frame_funname): Use get_frame_function. Handle inlined blocks. (frame_info): Mark inlined functions. (backtrace_command_1): Use get_current_user_frame. (print_frame_local_vars, print_frame_label_vars): Update comments. (return_command): Refuse inlined functions. * symtab.c (lookup_symbol_aux_local): Stop at inlined function boundaries. (find_function_start_sal): Avoid inlined functions. (completion_list_add_fields): New function. (default_make_symbol_completion_list): Use it. Use block_static_block and block_global_block. Check for inlined functions. (skip_prologue_using_sal): Avoid line number comparison across inlining. * symtab.h (struct symbol): Add is_inlined. (SYMBOL_INLINED): New. * target.c (target_resume): Call clear_inline_frame_state. * valops.c (value_of_variable): Check block_inlined_p. gdb/doc/ * gdb.texinfo (Debugging Optimized Code): New chapter. (Compiling for Debugging): Reference it. Move some text to the new section. gdb/testsuite/ * gdb.base/break.exp: Add an XFAIL for gcc/36748. * gdb.cp/annota2.exp: Accept frames-invalid in more places. * gdb.opt/Makefile.in (EXECUTABLES): Update. * gdb.opt/clobbered-registers-O2.exp: Update to GPL v3. * gdb.opt/inline-bt.c, gdb.opt/inline-bt.exp, gdb.opt/inline-cmds.c, gdb.opt/inline-cmds.exp, gdb.opt/inline-locals.c, gdb.opt/inline-locals.exp, gdb.opt/inline-markers.c: New files. * lib/gdb.exp (skip_inline_frame_tests): New function. (skip_inline_var_tests): New function.
2009-06-28 02:20:24 +02:00
/* A frame representing an inlined function, associated with an
upcoming (prev, outer, older) NORMAL_FRAME. */
gdb/ * NEWS: Document inlined function support. * Makefile.in (SFILES): Add inline-frame.c. (COMMON_OBS): Add inline-frame.o. * block.c (contained_in): Rewrite to use lexical nesting. (block_linkage_function): Skip inlined function blocks. (block_inlined_p): New. * block.h (struct block): Update comment. (block_inlined_p): New prototype. * blockframe.c (get_frame_block): Handle inlined functions. (get_frame_function): Do not use block_linkage_function. (block_innermost_frame): Use get_frame_block and contained_in. * breakpoint.c (watchpoint_check): Remove extra reinit_frame_cache. Skip over inlined functions. Simplify epilogue check. (bpstat_check_breakpoint_conditions): Use get_stack_frame_id. Update comments. (set_momentary_breakpoint): Only accept non-inlined frames. (watch_command_1): Use frame_unwind_caller_pc and frame_unwind_caller_id instead of get_prev_frame. (until_break_command): Likewise. Use get_stack_frame_id. * buildsym.c (end_symtab): Set SYMBOL_SYMTAB for block functions. * dwarf2loc.c (dwarf_expr_frame_base): Use block_linkage_function. * dwarf2read.c (process_die): Handle DW_TAG_inlined_subroutine. (read_func_scope, new_symbol): Likewise. Handle arguments specially for inlined functions without call site information. (inherit_abstract_dies): Allow tag mismatch for inlined subroutines. (die_specification): Treat DW_AT_abstract_origin as a specification. (read_type_die): Handle DW_TAG_inlined_subroutine. * frame-unwind.c (frame_unwind_init): Add inline_frame_unwind. * frame.c (fprint_frame_id): Print inline depth. (fprint_frame_type): Handle INLINE_FRAME and SENTINEL_FRAME. (skip_inlined_frames, get_stack_frame_id): New. (frame_unwind_caller_id): Use skip_inlined_frames. (frame_id_inlined_p): New. (frame_id_eq): Make the logic match the comments. Add inline_depth check. (frame_id_inner): Handle inlined functions. (frame_unwind_pc): New function, copied from frame_unwind_caller_pc. (frame_unwind_caller_pc): Use skip_inlined_frames and frame_unwind_pc. (get_prev_frame_1): Check for inline frames. Split out frame allocation to get_prev_frame_raw. (get_prev_frame_raw): New function. (get_prev_frame): Handle inline frames. (get_frame_pc): Use frame_unwind_pc. (get_frame_address_in_block): Skip inlined frames on both sides. (pc_notcurrent): Delete. (find_frame_sal): Rewrite to handle inline call sites. Use get_frame_address_in_block. (deprecated_update_frame_pc_hack): Make static. * frame.h: Update comments. (struct frame_id): Add inline_depth. (enum frame_type): Add INLINE_FRAME. (frame_id_inlined_p, get_stack_frame_id): New prototypes. * gdbthread.h (struct thread_info): Add step_stack_frame_id field. * infcmd.c (set_step_frame): New function. (step_once): Use set_step_frame. Handle inlined functions. (until_next_command): Use set_step_frame. (finish_backward), finish_forward): Use get_stack_frame_id. (finish_command): Support inlined functions. * inferior.h (set_step_info): New prototype. * infrun.c (RESUME_ALL): Use minus_one_ptid. (clear_proceed_status): Clear step_stack_frame_id. (init_wait_for_inferior): Call clear_inline_frame_state. (init_execution_control_state): Make static. (set_step_info): New function. (init_thread_stepping_state): Do not set the symtab or line here. (stepped_in_from): New function. (handle_inferior_event): Handle inlined functions. Use set_step_info. (insert_step_resume_breakpoint_at_frame): Use get_stack_frame_id. (struct inferior_status): Add step_stack_frame_id. (save_inferior_status, restore_inferior_status): Save and restore step_stack_frame_id. * inline-frame.c, inline-frame.h: New files. * minsyms.c (prim_record_minimal_symbol_and_info): Use XCALLOC. * regcache.c (regcache_write_pc): Call reinit_frame_cache. * s390-tdep.c (s390_prologue_frame_unwind_cache): Handle INLINE_FRAME. * stack.c (frame_show_address): New. (print_frame_info, print_frame): Use it. (find_frame_funname): Use get_frame_function. Handle inlined blocks. (frame_info): Mark inlined functions. (backtrace_command_1): Use get_current_user_frame. (print_frame_local_vars, print_frame_label_vars): Update comments. (return_command): Refuse inlined functions. * symtab.c (lookup_symbol_aux_local): Stop at inlined function boundaries. (find_function_start_sal): Avoid inlined functions. (completion_list_add_fields): New function. (default_make_symbol_completion_list): Use it. Use block_static_block and block_global_block. Check for inlined functions. (skip_prologue_using_sal): Avoid line number comparison across inlining. * symtab.h (struct symbol): Add is_inlined. (SYMBOL_INLINED): New. * target.c (target_resume): Call clear_inline_frame_state. * valops.c (value_of_variable): Check block_inlined_p. gdb/doc/ * gdb.texinfo (Debugging Optimized Code): New chapter. (Compiling for Debugging): Reference it. Move some text to the new section. gdb/testsuite/ * gdb.base/break.exp: Add an XFAIL for gcc/36748. * gdb.cp/annota2.exp: Accept frames-invalid in more places. * gdb.opt/Makefile.in (EXECUTABLES): Update. * gdb.opt/clobbered-registers-O2.exp: Update to GPL v3. * gdb.opt/inline-bt.c, gdb.opt/inline-bt.exp, gdb.opt/inline-cmds.c, gdb.opt/inline-cmds.exp, gdb.opt/inline-locals.c, gdb.opt/inline-locals.exp, gdb.opt/inline-markers.c: New files. * lib/gdb.exp (skip_inline_frame_tests): New function. (skip_inline_var_tests): New function.
2009-06-28 02:20:24 +02:00
INLINE_FRAME,
gdb/ Recognize virtual tail call frames. * Makefile.in (SFILES): Add dwarf2-frame-tailcall.c. (HFILES_NO_SRCDIR): Add dwarf2-frame-tailcall.h. (COMMON_OBS): Add dwarf2-frame-tailcall.o. * dwarf2-frame-tailcall.c: New file. * dwarf2-frame-tailcall.h: New file. * dwarf2-frame.c: Include dwarf2-frame-tailcall.h. (execute_cfa_program): New function comment. Return INSN_PTR. Reset REGS.PREV only after CIE execution. (struct dwarf2_frame_cache): New field tailcall_cache. (dwarf2_frame_cache): New variables entry_pc, entry_cfa_sp_offset, entry_cfa_sp_offset_p and instr. Execute FDE instructions in two parts, try to find entry_cfa_sp_offset. Call dwarf2_tailcall_sniffer_first. (dwarf2_frame_prev_register): Call dwarf2_tailcall_prev_register_first when appropriate. (dwarf2_frame_dealloc_cache): New function. (dwarf2_frame_sniffer): Preinitialize cache by dwarf2_frame_cache. (dwarf2_frame_unwind): Install dwarf2_frame_dealloc_cache. (dwarf2_signal_frame_unwind): Do not install dwarf2_frame_dealloc_cache. (dwarf2_append_unwinders): Add dwarf2_tailcall_frame_unwind. (dwarf2_frame_cfa): Support also dwarf2_tailcall_frame_unwind. * dwarf2loc.c (func_addr_to_tail_call_list) (tailcall_dump, call_sitep, VEC (call_sitep), chain_candidate) (call_site_find_chain_1, call_site_find_chain): New. * dwarf2loc.h (struct call_site_chain): New. (call_site_find_chain): New declaration. * frame.c (get_frame_address_in_block): Support also TAILCALL_FRAME. * frame.h (enum frame_type): New entry TAILCALL_FRAME. * python/py-frame.c (gdbpy_initialize_frames): Add TAILCALL_FRAME. * stack.c (frame_info): Support also TAILCALL_FRAME. gdb/doc/ Recognize virtual tail call frames. * gdb.texinfo (Optimized Code): Add reference to Tail Call Frames. (Tail Call Frames): New node. (Frames In Python): Add gdb.TAILCALL_FRAME. gdb/testsuite/ Recognize virtual tail call frames. * gdb.arch/amd64-entry-value.cc (c, a, b, amb_z, amb_y, amb_x, amb) (amb_b, amb_a): New. (main): Call a and b. * gdb.arch/amd64-entry-value.exp (tailcall: breakhere, tailcall: bt) (tailcall: p i, tailcall: p j, set $sp0=$sp, up, p $sp0 == $sp, frame 3) (p $sp0 + sizeof (void *) == $sp, ambiguous: breakhere, ambiguous: bt): New tests.
2011-10-09 21:26:44 +02:00
/* A virtual frame of a tail call - see dwarf2_tailcall_frame_unwind. */
TAILCALL_FRAME,
/* In a signal handler, various OSs handle this in various ways.
The main thing is that the frame may be far from normal. */
SIGTRAMP_FRAME,
/* Fake frame representing a cross-architecture call. */
ARCH_FRAME,
/* Sentinel or registers frame. This frame obtains register values
direct from the inferior's registers. */
SENTINEL_FRAME
};
/* For every stopped thread, GDB tracks two frames: current and
selected. Current frame is the inner most frame of the selected
thread. Selected frame is the one being examined by the GDB
CLI (selected using `up', `down', ...). The frames are created
on-demand (via get_prev_frame()) and then held in a frame cache. */
/* FIXME: cagney/2002-11-28: Er, there is a lie here. If you do the
sequence: `thread 1; up; thread 2; thread 1' you lose thread 1's
selected frame. At present GDB only tracks the selected frame of
the current thread. But be warned, that might change. */
/* FIXME: cagney/2002-11-14: At any time, only one thread's selected
and current frame can be active. Switching threads causes gdb to
discard all that cached frame information. Ulgh! Instead, current
and selected frame should be bound to a thread. */
/* On demand, create the inner most frame using information found in
the inferior. If the inner most frame can't be created, throw an
error. */
extern struct frame_info *get_current_frame (void);
/* Does the current target interface have enough state to be able to
query the current inferior for frame info, and is the inferior in a
state where that is possible? */
extern int has_stack_frames (void);
/* Invalidates the frame cache (this function should have been called
invalidate_cached_frames).
FIXME: cagney/2002-11-28: There should be two methods: one that
reverts the thread's selected frame back to current frame (for when
the inferior resumes) and one that does not (for when the user
modifies the target invalidating the frame cache). */
extern void reinit_frame_cache (void);
/* On demand, create the selected frame and then return it. If the
selected frame can not be created, this function prints then throws
an error. When MESSAGE is non-NULL, use it for the error message,
otherwize use a generic error message. */
/* FIXME: cagney/2002-11-28: At present, when there is no selected
frame, this function always returns the current (inner most) frame.
It should instead, when a thread has previously had its frame
selected (but not resumed) and the frame cache invalidated, find
and then return that thread's previously selected frame. */
extern struct frame_info *get_selected_frame (const char *message);
/* If there is a selected frame, return it. Otherwise, return NULL. */
extern struct frame_info *get_selected_frame_if_set (void);
/* Select a specific frame. NULL, apparently implies re-select the
inner most frame. */
extern void select_frame (struct frame_info *);
/* Given a FRAME, return the next (more inner, younger) or previous
(more outer, older) frame. */
extern struct frame_info *get_prev_frame (struct frame_info *);
extern struct frame_info *get_next_frame (struct frame_info *);
Fix PR backtrace/15558 This PR is about an assertion failure in GDB that can be triggered by setting "backtrace limit" to a value that causes GDB to stop unwinding after an inline frame. In this case, an assertion in inline_frame_this_id will trigger: /* We need a valid frame ID, so we need to be based on a valid frame. (...). */ gdb_assert (frame_id_p (*this_id)); Looking at the function: static void inline_frame_this_id (struct frame_info *this_frame, void **this_cache, struct frame_id *this_id) { struct symbol *func; /* In order to have a stable frame ID for a given inline function, we must get the stack / special addresses from the underlying real frame's this_id method. So we must call get_prev_frame. Because we are inlined into some function, there must be previous frames, so this is safe - as long as we're careful not to create any cycles. */ *this_id = get_frame_id (get_prev_frame (this_frame)); we see we're computing the frame id for the inline frame. If this is an inline frame, which is a virtual frame constructed based on debug info, on top of a real stack frame, we should _always_ be able to find where the frame was inlined into, as that ultimately just means peeling off the virtual frames on top of the real stack frame. If there ultimately was no prev (real) stack frame, then we wouldn't have been able to construct the inline frame either, by design. That's what the assertion catches. So we have an inline frame, we should _always_ be able to compute its ID, even if that means bypassing the user backtrace limits to get at the real stack frame's info. The problem is that inline_frame_id calls get_prev_frame, and that takes user backtrace limits into account. Code that wants to bypass the limits calls get_prev_frame_1 instead. Note how get_prev_frame_1 already skips all checks for inline frames: /* If we are unwinding from an inline frame, all of the below tests were already performed when we unwound from the next non-inline frame. We must skip them, since we can not get THIS_FRAME's ID until we have unwound all the way down to the previous non-inline frame. */ if (get_frame_type (this_frame) == INLINE_FRAME) return get_prev_frame_if_no_cycle (this_frame); And note how the related frame_unwind_caller_id function also uses get_prev_frame_1: struct frame_id frame_unwind_caller_id (struct frame_info *next_frame) { struct frame_info *this_frame; /* Use get_prev_frame_1, and not get_prev_frame. The latter will truncate the frame chain, leading to this function unintentionally returning a null_frame_id (e.g., when a caller requests the frame ID of "main()"s caller. */ next_frame = skip_artificial_frames (next_frame); this_frame = get_prev_frame_1 (next_frame); if (this_frame) return get_frame_id (skip_artificial_frames (this_frame)); else return null_frame_id; } get_prev_frame_1 is currently static in frame.c. As a _1 suffix is not a good name for an extern function, I've renamed it. Tested on x86-64 Fedora 17. gdb/ 2014-04-18 Pedro alves <palves@redhat.com> Tom Tromey <tromey@redhat.com> PR backtrace/15558 * frame.c (get_prev_frame_1): Rename to ... (get_prev_frame_always): ... this, and make extern. Adjust. (skip_artificial_frames): Use get_prev_frame_always. (frame_unwind_caller_id, frame_pop, get_prev_frame) (get_frame_unwind_stop_reason): Adjust to rename. * frame.h (get_prev_frame_always): Declare. * inline-frame.c: Include frame.h. (inline_frame_this_id): Use get_prev_frame_always. gdb/testsuite/ 2014-04-18 Tom Tromey <palves@redhat.com> Pedro alves <tromey@redhat.com> PR backtrace/15558 * gdb.opt/inline-bt.exp: Test backtracing from an inline function with a backtrace limit. * gdb.python/py-frame-inline.exp: Test running to an inline function with a backtrace limit, and printing the newest frame. * gdb.python/py-frame-inline.c (main): Call f.
2014-04-18 11:15:21 +02:00
/* Return a "struct frame_info" corresponding to the frame that called
THIS_FRAME. Returns NULL if there is no such frame.
Unlike get_prev_frame, this function always tries to unwind the
frame. */
extern struct frame_info *get_prev_frame_always (struct frame_info *);
/* Given a frame's ID, relocate the frame. Returns NULL if the frame
is not found. */
extern struct frame_info *frame_find_by_id (struct frame_id id);
/* Base attributes of a frame: */
/* The frame's `resume' address. Where the program will resume in
this frame.
This replaced: frame->pc; */
extern CORE_ADDR get_frame_pc (struct frame_info *);
/* Same as get_frame_pc, but return a boolean indication of whether
the PC is actually available, instead of throwing an error. */
extern int get_frame_pc_if_available (struct frame_info *frame,
CORE_ADDR *pc);
/* An address (not necessarily aligned to an instruction boundary)
that falls within THIS frame's code block.
When a function call is the last statement in a block, the return
address for the call may land at the start of the next block.
Similarly, if a no-return function call is the last statement in
the function, the return address may end up pointing beyond the
function, and possibly at the start of the next function.
These methods make an allowance for this. For call frames, this
function returns the frame's PC-1 which "should" be an address in
the frame's block. */
extern CORE_ADDR get_frame_address_in_block (struct frame_info *this_frame);
/* Same as get_frame_address_in_block, but returns a boolean
indication of whether the frame address is determinable (when the
PC is unavailable, it will not be), instead of possibly throwing an
error trying to read an unavailable PC. */
extern int
get_frame_address_in_block_if_available (struct frame_info *this_frame,
CORE_ADDR *pc);
/* The frame's inner-most bound. AKA the stack-pointer. Confusingly
known as top-of-stack. */
extern CORE_ADDR get_frame_sp (struct frame_info *);
/* Following on from the `resume' address. Return the entry point
address of the function containing that resume address, or zero if
that function isn't known. */
extern CORE_ADDR get_frame_func (struct frame_info *fi);
/* Same as get_frame_func, but returns a boolean indication of whether
the frame function is determinable (when the PC is unavailable, it
will not be), instead of possibly throwing an error trying to read
an unavailable PC. */
extern int get_frame_func_if_available (struct frame_info *fi, CORE_ADDR *);
/* Closely related to the resume address, various symbol table
attributes that are determined by the PC. Note that for a normal
frame, the PC refers to the resume address after the return, and
not the call instruction. In such a case, the address is adjusted
so that it (approximately) identifies the call site (and not the
return site).
NOTE: cagney/2002-11-28: The frame cache could be used to cache the
computed value. Working on the assumption that the bottle-neck is
in the single step code, and that code causes the frame cache to be
constantly flushed, caching things in a frame is probably of little
benefit. As they say `show us the numbers'.
NOTE: cagney/2002-11-28: Plenty more where this one came from:
find_frame_block(), find_frame_partial_function(),
find_frame_symtab(), find_frame_function(). Each will need to be
carefully considered to determine if the real intent was for it to
apply to the PC or the adjusted PC. */
extern void find_frame_sal (struct frame_info *frame,
struct symtab_and_line *sal);
/* Set the current source and line to the location given by frame
FRAME, if possible. When CENTER is true, adjust so the relevant
line is in the center of the next 'list'. */
void set_current_sal_from_frame (struct frame_info *, int);
/* Return the frame base (what ever that is) (DEPRECATED).
Old code was trying to use this single method for two conflicting
purposes. Such code needs to be updated to use either of:
get_frame_id: A low level frame unique identifier, that consists of
both a stack and a function address, that can be used to uniquely
identify a frame. This value is determined by the frame's
low-level unwinder, the stack part [typically] being the
top-of-stack of the previous frame, and the function part being the
function's start address. Since the correct identification of a
frameless function requires both a stack and function address,
the old get_frame_base method was not sufficient.
get_frame_base_address: get_frame_locals_address:
get_frame_args_address: A set of high-level debug-info dependant
addresses that fall within the frame. These addresses almost
certainly will not match the stack address part of a frame ID (as
returned by get_frame_base).
This replaced: frame->frame; */
extern CORE_ADDR get_frame_base (struct frame_info *);
/* Return the per-frame unique identifer. Can be used to relocate a
frame after a frame cache flush (and other similar operations). If
FI is NULL, return the null_frame_id.
NOTE: kettenis/20040508: These functions return a structure. On
platforms where structures are returned in static storage (vax,
m68k), this may trigger compiler bugs in code like:
if (frame_id_eq (get_frame_id (l), get_frame_id (r)))
where the return value from the first get_frame_id (l) gets
overwritten by the second get_frame_id (r). Please avoid writing
code like this. Use code like:
struct frame_id id = get_frame_id (l);
if (frame_id_eq (id, get_frame_id (r)))
instead, since that avoids the bug. */
extern struct frame_id get_frame_id (struct frame_info *fi);
gdb/ * NEWS: Document inlined function support. * Makefile.in (SFILES): Add inline-frame.c. (COMMON_OBS): Add inline-frame.o. * block.c (contained_in): Rewrite to use lexical nesting. (block_linkage_function): Skip inlined function blocks. (block_inlined_p): New. * block.h (struct block): Update comment. (block_inlined_p): New prototype. * blockframe.c (get_frame_block): Handle inlined functions. (get_frame_function): Do not use block_linkage_function. (block_innermost_frame): Use get_frame_block and contained_in. * breakpoint.c (watchpoint_check): Remove extra reinit_frame_cache. Skip over inlined functions. Simplify epilogue check. (bpstat_check_breakpoint_conditions): Use get_stack_frame_id. Update comments. (set_momentary_breakpoint): Only accept non-inlined frames. (watch_command_1): Use frame_unwind_caller_pc and frame_unwind_caller_id instead of get_prev_frame. (until_break_command): Likewise. Use get_stack_frame_id. * buildsym.c (end_symtab): Set SYMBOL_SYMTAB for block functions. * dwarf2loc.c (dwarf_expr_frame_base): Use block_linkage_function. * dwarf2read.c (process_die): Handle DW_TAG_inlined_subroutine. (read_func_scope, new_symbol): Likewise. Handle arguments specially for inlined functions without call site information. (inherit_abstract_dies): Allow tag mismatch for inlined subroutines. (die_specification): Treat DW_AT_abstract_origin as a specification. (read_type_die): Handle DW_TAG_inlined_subroutine. * frame-unwind.c (frame_unwind_init): Add inline_frame_unwind. * frame.c (fprint_frame_id): Print inline depth. (fprint_frame_type): Handle INLINE_FRAME and SENTINEL_FRAME. (skip_inlined_frames, get_stack_frame_id): New. (frame_unwind_caller_id): Use skip_inlined_frames. (frame_id_inlined_p): New. (frame_id_eq): Make the logic match the comments. Add inline_depth check. (frame_id_inner): Handle inlined functions. (frame_unwind_pc): New function, copied from frame_unwind_caller_pc. (frame_unwind_caller_pc): Use skip_inlined_frames and frame_unwind_pc. (get_prev_frame_1): Check for inline frames. Split out frame allocation to get_prev_frame_raw. (get_prev_frame_raw): New function. (get_prev_frame): Handle inline frames. (get_frame_pc): Use frame_unwind_pc. (get_frame_address_in_block): Skip inlined frames on both sides. (pc_notcurrent): Delete. (find_frame_sal): Rewrite to handle inline call sites. Use get_frame_address_in_block. (deprecated_update_frame_pc_hack): Make static. * frame.h: Update comments. (struct frame_id): Add inline_depth. (enum frame_type): Add INLINE_FRAME. (frame_id_inlined_p, get_stack_frame_id): New prototypes. * gdbthread.h (struct thread_info): Add step_stack_frame_id field. * infcmd.c (set_step_frame): New function. (step_once): Use set_step_frame. Handle inlined functions. (until_next_command): Use set_step_frame. (finish_backward), finish_forward): Use get_stack_frame_id. (finish_command): Support inlined functions. * inferior.h (set_step_info): New prototype. * infrun.c (RESUME_ALL): Use minus_one_ptid. (clear_proceed_status): Clear step_stack_frame_id. (init_wait_for_inferior): Call clear_inline_frame_state. (init_execution_control_state): Make static. (set_step_info): New function. (init_thread_stepping_state): Do not set the symtab or line here. (stepped_in_from): New function. (handle_inferior_event): Handle inlined functions. Use set_step_info. (insert_step_resume_breakpoint_at_frame): Use get_stack_frame_id. (struct inferior_status): Add step_stack_frame_id. (save_inferior_status, restore_inferior_status): Save and restore step_stack_frame_id. * inline-frame.c, inline-frame.h: New files. * minsyms.c (prim_record_minimal_symbol_and_info): Use XCALLOC. * regcache.c (regcache_write_pc): Call reinit_frame_cache. * s390-tdep.c (s390_prologue_frame_unwind_cache): Handle INLINE_FRAME. * stack.c (frame_show_address): New. (print_frame_info, print_frame): Use it. (find_frame_funname): Use get_frame_function. Handle inlined blocks. (frame_info): Mark inlined functions. (backtrace_command_1): Use get_current_user_frame. (print_frame_local_vars, print_frame_label_vars): Update comments. (return_command): Refuse inlined functions. * symtab.c (lookup_symbol_aux_local): Stop at inlined function boundaries. (find_function_start_sal): Avoid inlined functions. (completion_list_add_fields): New function. (default_make_symbol_completion_list): Use it. Use block_static_block and block_global_block. Check for inlined functions. (skip_prologue_using_sal): Avoid line number comparison across inlining. * symtab.h (struct symbol): Add is_inlined. (SYMBOL_INLINED): New. * target.c (target_resume): Call clear_inline_frame_state. * valops.c (value_of_variable): Check block_inlined_p. gdb/doc/ * gdb.texinfo (Debugging Optimized Code): New chapter. (Compiling for Debugging): Reference it. Move some text to the new section. gdb/testsuite/ * gdb.base/break.exp: Add an XFAIL for gcc/36748. * gdb.cp/annota2.exp: Accept frames-invalid in more places. * gdb.opt/Makefile.in (EXECUTABLES): Update. * gdb.opt/clobbered-registers-O2.exp: Update to GPL v3. * gdb.opt/inline-bt.c, gdb.opt/inline-bt.exp, gdb.opt/inline-cmds.c, gdb.opt/inline-cmds.exp, gdb.opt/inline-locals.c, gdb.opt/inline-locals.exp, gdb.opt/inline-markers.c: New files. * lib/gdb.exp (skip_inline_frame_tests): New function. (skip_inline_var_tests): New function.
2009-06-28 02:20:24 +02:00
extern struct frame_id get_stack_frame_id (struct frame_info *fi);
extern struct frame_id frame_unwind_caller_id (struct frame_info *next_frame);
/* Assuming that a frame is `normal', return its base-address, or 0 if
the information isn't available. NOTE: This address is really only
meaningful to the frame's high-level debug info. */
extern CORE_ADDR get_frame_base_address (struct frame_info *);
/* Assuming that a frame is `normal', return the base-address of the
local variables, or 0 if the information isn't available. NOTE:
This address is really only meaningful to the frame's high-level
debug info. Typically, the argument and locals share a single
base-address. */
extern CORE_ADDR get_frame_locals_address (struct frame_info *);
/* Assuming that a frame is `normal', return the base-address of the
parameter list, or 0 if that information isn't available. NOTE:
This address is really only meaningful to the frame's high-level
debug info. Typically, the argument and locals share a single
base-address. */
extern CORE_ADDR get_frame_args_address (struct frame_info *);
/* The frame's level: 0 for innermost, 1 for its caller, ...; or -1
for an invalid frame). */
extern int frame_relative_level (struct frame_info *fi);
/* Return the frame's type. */
extern enum frame_type get_frame_type (struct frame_info *);
2009-10-19 Pedro Alves <pedro@codesourcery.com> Stan Shebs <stan@codesourcery.com> Add base multi-executable/process support to GDB. gdb/ * Makefile.in (SFILES): Add progspace.c. (COMMON_OBS): Add progspace.o. * progspace.h: New. * progspace.c: New. * breakpoint.h (struct bp_target_info) <placed_address_space>: New field. (struct bp_location) <pspace>: New field. (struct breakpoint) <pspace>: New field. (bpstat_stop_status, breakpoint_here_p) (moribund_breakpoint_here_p, breakpoint_inserted_here_p) (regular_breakpoint_inserted_here_p) (software_breakpoint_inserted_here_p, breakpoint_thread_match) (set_default_breakpoint): Adjust prototypes. (remove_breakpoints_pid, breakpoint_program_space_exit): Declare. (insert_single_step_breakpoint, deprecated_insert_raw_breakpoint): Adjust prototypes. * breakpoint.c (executing_startup): Delete. (default_breakpoint_sspace): New. (breakpoint_restore_shadows): Skip if the address space doesn't match. (update_watchpoint): Record the frame's program space in the breakpoint location. (insert_bp_location): Record the address space in target_info. Adjust to pass the symbol space to solib_name_from_address. (breakpoint_program_space_exit): New. (insert_breakpoint_locations): Switch the symbol space and thread when inserting breakpoints. Don't insert breakpoints in a vfork parent waiting for vfork done if we're not attached to the vfork child. (remove_breakpoints_pid): New. (reattach_breakpoints): Switch to a thread of PID. Ignore breakpoints of other symbol spaces. (create_internal_breakpoint): Store the symbol space in the sal. (create_longjmp_master_breakpoint): Iterate over all symbol spaces. (update_breakpoints_after_exec): Ignore breakpoints for other symbol spaces. (remove_breakpoint): Rename to ... (remove_breakpoint_1): ... this. Pass the breakpoints symbol space to solib_name_from_address. (remove_breakpoint): New. (mark_breakpoints_out): Ignore breakpoints from other symbol spaces. (breakpoint_init_inferior): Ditto. (breakpoint_here_p): Add an address space argument and adjust to use breakpoint_address_match. (moribund_breakpoint_here_p): Ditto. (regular_breakpoint_inserted_here_p): Ditto. (breakpoint_inserted_here_p): Ditto. (software_breakpoint_inserted_here_p): Ditto. (breakpoint_thread_match): Ditto. (bpstat_check_location): Ditto. (bpstat_stop_status): Ditto. (print_breakpoint_location): If there's a location to print, switch the current symbol space. (print_one_breakpoint_location): Add `allflag' argument. (print_one_breakpoint): Ditto. Adjust. (do_captured_breakpoint_query): Adjust. (breakpoint_1): Adjust. (breakpoint_has_pc): Also match the symbol space. (describe_other_breakpoints): Add a symbol space argument and adjust. (set_default_breakpoint): Add a symbol space argument. Set default_breakpoint_sspace. (breakpoint_address_match): New. (check_duplicates_for): Add an address space argument, and adjust. (set_raw_breakpoint): Record the symbol space in the location and in the breakpoint. (set_longjmp_breakpoint): Skip longjmp master breakpoints from other symbol spaces. (remove_thread_event_breakpoints, remove_solib_event_breakpoints) (disable_breakpoints_in_shlibs): Skip breakpoints from other symbol spaces. (disable_breakpoints_in_unloaded_shlib): Match symbol spaces. (create_catchpoint): Set the symbol space in the sal. (disable_breakpoints_before_startup): Skip breakpoints from other symbol spaces. Set executing_startup in the current symbol space. (enable_breakpoints_after_startup): Clear executing_startup in the current symbol space. Skip breakpoints from other symbol spaces. (clone_momentary_breakpoint): Also copy the symbol space. (add_location_to_breakpoint): Set the location's symbol space. (bp_loc_is_permanent): Switch thread and symbol space. (create_breakpoint): Adjust. (expand_line_sal_maybe): Expand comment to mention symbol spaces. Switch thread and symbol space when reading memory. (parse_breakpoint_sals): Set the symbol space in the sal. (break_command_really): Ditto. (skip_prologue_sal): Switch and space. (resolve_sal_pc): Ditto. (watch_command_1): Record the symbol space in the sal. (create_ada_exception_breakpoint): Adjust. (clear_command): Adjust. Match symbol spaces. (update_global_location_list): Use breakpoint_address_match. (breakpoint_re_set_one): Switch thread and space. (breakpoint_re_set): Save symbol space. (breakpoint_re_set_thread): Also reset the symbol space. (deprecated_insert_raw_breakpoint): Add an address space argument. Adjust. (insert_single_step_breakpoint): Ditto. (single_step_breakpoint_inserted_here_p): Ditto. (clear_syscall_counts): New. (_initialize_breakpoint): Install it as inferior_exit observer. * exec.h: Include "progspace.h". (exec_bfd, exec_bfd_mtime): New defines. (exec_close): Declare. * exec.c: Include "gdbthread.h" and "progspace.h". (exec_bfd, exec_bfd_mtime, current_target_sections_1): Delete. (using_exec_ops): New. (exec_close_1): Rename to exec_close, and make public. (exec_close): Rename to exec_close_1, and adjust all callers. Add description. Remove target sections and close executables from all program spaces. (exec_file_attach): Add comment. (add_target_sections): Check on `using_exec_ops' to check if the target should be pushed. (remove_target_sections): Only unpush the target if there are no more target sections in any symbol space. * gdbcore.h: Include "exec.h". (exec_bfd, exec_bfd_mtime): Remove declarations. * frame.h (get_frame_program_space, get_frame_address_space) (frame_unwind_program_space): Declare. * frame.c (struct frame_info) <pspace, aspace>: New fields. (create_sentinel_frame): Add program space argument. Set the pspace and aspace fields of the frame object. (get_current_frame, create_new_frame): Adjust. (get_frame_program_space): New. (frame_unwind_program_space): New. (get_frame_address_space): New. * stack.c (print_frame_info): Adjust. (print_frame): Use the frame's program space. * gdbthread.h (any_live_thread_of_process): Declare. * thread.c (any_live_thread_of_process): New. (switch_to_thread): Switch the program space as well. (restore_selected_frame): Don't warn if trying to restore frame level 0. * inferior.h: Include "progspace.h". (detach_fork): Declare. (struct inferior) <removable, aspace, pspace> <vfork_parent, vfork_child, pending_detach> <waiting_for_vfork_done>: New fields. <terminal_info>: Remove field. <data, num_data>: New fields. (register_inferior_data, register_inferior_data_with_cleanup) (clear_inferior_data, set_inferior_data, inferior_data): Declare. (exit_inferior, exit_inferior_silent, exit_inferior_num_silent) (inferior_appeared): Declare. (find_inferior_pid): Typo. (find_inferior_id, find_inferior_for_program_space): Declare. (set_current_inferior, save_current_inferior, prune_inferiors) (number_of_inferiors): Declare. (inferior_list): Declare. * inferior.c: Include "gdbcore.h" and "symfile.h". (inferior_list): Make public. (delete_inferior_1): Always delete thread silently. (find_inferior_id): Make public. (current_inferior_): New. (current_inferior): Use it. (set_current_inferior): New. (restore_inferior): New. (save_current_inferior): New. (free_inferior): Free the per-inferior data. (add_inferior_silent): Allocate per-inferior data. Call inferior_appeared. (delete_threads_of_inferior): New. (delete_inferior_1): Adjust interface to take an inferior pointer. (delete_inferior): Adjust. (delete_inferior_silent): Adjust. (exit_inferior_1): New. (exit_inferior): New. (exit_inferior_silent): New. (exit_inferior_num_silent): New. (detach_inferior): Adjust. (inferior_appeared): New. (discard_all_inferiors): Adjust. (find_inferior_id): Make public. Assert pid is not zero. (find_inferior_for_program_space): New. (have_inferiors): Check if we have any inferior with pid not zero. (have_live_inferiors): Go over all pushed targets looking for process_stratum. (prune_inferiors): New. (number_of_inferiors): New. (print_inferior): Add executable column. Print vfork parent/child relationships. (inferior_command): Adjust to cope with not running inferiors. (remove_inferior_command): New. (add_inferior_command): New. (clone_inferior_command): New. (struct inferior_data): New. (struct inferior_data_registration): New. (struct inferior_data_registry): New. (inferior_data_registry): New. (register_inferior_data_with_cleanup): New. (register_inferior_data): New. (inferior_alloc_data): New. (inferior_free_data): New. (clear_inferior_data): New. (set_inferior_data): New. (inferior_data): New. (initialize_inferiors): New. (_initialize_inferiors): Register "add-inferior", "remove-inferior" and "clone-inferior" commands. * objfiles.h: Include "progspace.h". (struct objfile) <pspace>: New field. (symfile_objfile, object_files): Don't declare. (ALL_PSPACE_OBJFILES): New. (ALL_PSPACE_OBJFILES_SAFE): New. (ALL_OBJFILES, ALL_OBJFILES_SAFE): Adjust. (ALL_PSPACE_SYMTABS): New. (ALL_PRIMARY_SYMTABS): Adjust. (ALL_PSPACE_PRIMARY_SYMTABS): New. (ALL_PSYMTABS): Adjust. (ALL_PSPACE_PSYMTABS): New. * objfiles.c (object_files, symfile_objfile): Delete. (struct objfile_sspace_info): New. (objfiles_pspace_data): New. (objfiles_pspace_data_cleanup): New. (get_objfile_pspace_data): New. (objfiles_changed_p): Delete. (allocate_objfile): Set the objfile's program space. Adjust to reference objfiles_changed_p in pspace data. (free_objfile): Adjust to reference objfiles_changed_p in pspace data. (objfile_relocate): Ditto. (update_section_map): Add pspace argument. Adjust to iterate over objfiles in the passed in pspace. (find_pc_section): Delete sections and num_sections statics. Adjust to refer to program space's objfiles_changed_p. Adjust to refer to sections and num_sections store in the objfile's pspace data. (objfiles_changed): Adjust to reference objfiles_changed_p in pspace data. (_initialize_objfiles): New. * linespec.c (decode_all_digits, decode_dollar): Set the sal's program space. * source.c (current_source_pspace): New. (get_current_source_symtab_and_line): Set the sal's program space. (set_current_source_symtab_and_line): Set current_source_pspace. (select_source_symtab): Ditto. Use ALL_OBJFILES. (forget_cached_source_info): Iterate over all program spaces. * symfile.c (clear_symtab_users): Adjust. * symmisc.c (print_symbol_bcache_statistics): Iterate over all program spaces. (print_objfile_statistics): Ditto. (maintenance_print_msymbols): Ditto. (maintenance_print_objfiles): Ditto. (maintenance_info_symtabs): Ditto. (maintenance_info_psymtabs): Ditto. * symtab.h (SYMTAB_PSPACE): New. (struct symtab_and_line) <pspace>: New field. * symtab.c (init_sal): Clear the sal's program space. (find_pc_sect_symtab): Set the sal's program space. Switch thread and space. (append_expanded_sal): Add program space argument. Iterate over all program spaces. (expand_line_sal): Iterate over all program spaces. Switch program space. * target.h (enum target_waitkind) <TARGET_WAITKIND_VFORK_DONE>: New. (struct target_ops) <to_thread_address_space>: New field. (target_thread_address_space): Define. * target.c (target_detach): Only remove breakpoints from the inferior we're detaching. (target_thread_address_space): New. * defs.h (initialize_progspace): Declare. * top.c (gdb_init): Call it. * solist.h (struct so_list) <sspace>: New field. * solib.h (struct program_space): Forward declare. (solib_name_from_address): Adjust prototype. * solib.c (so_list_head): Replace with a macro referencing the program space. (update_solib_list): Set the so's program space. (solib_name_from_address): Add a program space argument and adjust. * solib-svr4.c (struct svr4_info) <pid>: Delete field. <interp_text_sect_low, interp_text_sect_high, interp_plt_sect_low> <interp_plt_sect_high>: New fields. (svr4_info_p, svr4_info): Delete. (solib_svr4_sspace_data): New. (get_svr4_info): Rewrite. (svr4_sspace_data_cleanup): New. (open_symbol_file_object): Adjust. (svr4_default_sos): Adjust. (svr4_fetch_objfile_link_map): Adjust. (interp_text_sect_low, interp_text_sect_high, interp_plt_sect_low) (interp_plt_sect_high): Delete. (svr4_in_dynsym_resolve_code): Adjust. (enable_break): Adjust. (svr4_clear_solib): Revert bit that removed the svr4_info here, and reinstate clearing debug_base, debug_loader_offset_p, debug_loader_offset and debug_loader_name. (_initialize_svr4_solib): Register solib_svr4_pspace_data. Don't install an inferior_exit observer anymore. * printcmd.c (struct display) <pspace>: New field. (display_command): Set the display's sspace. (do_one_display): Match the display's sspace. (display_uses_solib_p): Ditto. * linux-fork.c (detach_fork): Moved to infrun.c. (_initialize_linux_fork): Moved "detach-on-fork" command to infrun.c. * infrun.c (detach_fork): Moved from linux-fork.c. (proceed_after_vfork_done): New. (handle_vfork_child_exec_or_exit): New. (follow_exec_mode_replace, follow_exec_mode_keep) (follow_exec_mode_names, follow_exec_mode_string) (show_follow_exec_mode_string): New. (follow_exec): New. Reinstate the mark_breakpoints_out call. Remove shared libraries before attaching new executable. If user wants to keep the inferior, keep it. (displaced_step_fixup): Adjust to pass an address space to the breakpoints module. (resume): Ditto. (clear_proceed_status): In all-stop mode, always clear the proceed status of all threads. (prepare_to_proceed): Adjust to pass an address space to the breakpoints module. (proceed): Ditto. (adjust_pc_after_break): Ditto. (handle_inferior_event): When handling a process exit, switch the program space to the inferior's that had exited. Call handle_vfork_child_exec_or_exit. Adjust to pass an address space to the breakpoints module. In non-stop mode, when following a fork and detach-fork is off, also resume the other branch. Handle TARGET_WAITKIND_VFORK_DONE. Set the program space in sals. (normal_stop): Prune inferiors. (_initialize_infrun): Install the new "follow-exec-mode" command. "detach-on-fork" moved here. * regcache.h (get_regcache_aspace): Declare. * regcache.c (struct regcache) <aspace>: New field. (regcache_xmalloc): Clear the aspace. (get_regcache_aspace): New. (regcache_cpy): Copy the aspace field. (regcache_cpy_no_passthrough): Ditto. (get_thread_regcache): Fetch the thread's address space from the target, and store it in the regcache. * infcall.c (call_function_by_hand): Set the sal's pspace. * arch-utils.c (default_has_shared_address_space): New. * arch-utils.h (default_has_shared_address_space): Declare. * gdbarch.sh (has_shared_address_space): New. * gdbarch.h, gdbarch.c: Regenerate. * linux-tdep.c: Include auxv.h, target.h, elf/common.h. (linux_has_shared_address_space): New. (_initialize_linux_tdep): Declare. * arm-tdep.c (arm_software_single_step): Pass the frame's address space to insert_single_step_breakpoint. * arm-linux-tdep.c (arm_linux_software_single_step): Pass the frame's pspace to breakpoint functions. * cris-tdep.c (crisv32_single_step_through_delay): Ditto. (cris_software_single_step): Ditto. * mips-tdep.c (deal_with_atomic_sequence): Add frame argument. Pass the frame's pspace to breakpoint functions. (mips_software_single_step): Adjust. (mips_single_step_through_delay): Adjust. * rs6000-aix-tdep.c (rs6000_software_single_step): Adjust. * rs6000-tdep.c (ppc_deal_with_atomic_sequence): Adjust. * solib-irix.c (enable_break): Adjust to pass the current frame's address space to breakpoint functions. * sparc-tdep.c (sparc_software_single_step): Ditto. * spu-tdep.c (spu_software_single_step): Ditto. * alpha-tdep.c (alpha_software_single_step): Ditto. * record.c (record_wait): Adjust to pass an address space to the breakpoints module. * fork-child.c (fork_inferior): Set the new inferior's program and address spaces. * inf-ptrace.c (inf_ptrace_follow_fork): Copy the parent's program and address spaces. (inf_ptrace_attach): Set the inferior's program and address spaces. * linux-nat.c: Include "solib.h". (linux_child_follow_fork): Manage parent and child's program and address spaces. Clone the parent's program space if necessary. Don't wait for the vfork to be done here. Refuse to resume if following the vfork parent while leaving the child stopped. (resume_callback): Don't resume a vfork parent. (linux_nat_resume): Also check for pending events in the lp->waitstatus field. (linux_handle_extended_wait): Report TARGET_WAITKIND_VFORK_DONE events to the core. (stop_wait_callback): Don't wait for SIGSTOP on vfork parents. (cancel_breakpoint): Adjust. * linux-thread-db.c (thread_db_wait): Don't remove thread event breakpoints here. (thread_db_mourn_inferior): Don't mark breakpoints out here. Remove thread event breakpoints after mourning. * corelow.c: Include progspace.h. (core_open): Set the inferior's program and address spaces. * remote.c (remote_add_inferior): Set the new inferior's program and address spaces. (remote_start_remote): Update address spaces. (extended_remote_create_inferior_1): Don't init the thread list if we already debugging other inferiors. * darwin-nat.c (darwin_attach): Set the new inferior's program and address spaces. * gnu-nat.c (gnu_attach): Ditto. * go32-nat.c (go32_create_inferior): Ditto. * inf-ttrace.c (inf_ttrace_follow_fork, inf_ttrace_attach): Ditto. * monitor.c (monitor_open): Ditto. * nto-procfs.c (procfs_attach, procfs_create_inferior): Ditto. * procfs.c (do_attach): Ditto. * windows-nat.c (do_initial_windows_stuff): Ditto. * inflow.c (inferior_process_group) (terminal_init_inferior_with_pgrp, terminal_inferior, (terminal_ours_1, inflow_inferior_exit, copy_terminal_info) (child_terminal_info, new_tty_postfork, set_sigint_trap): Adjust to use per-inferior data instead of inferior->terminal_info. (inflow_inferior_data): New. (inflow_new_inferior): Delete. (inflow_inferior_data_cleanup): New. (get_inflow_inferior_data): New. * mi/mi-interp.c (mi_new_inferior): Rename to... (mi_inferior_appeared): ... this. (mi_interpreter_init): Adjust. * tui/tui-disasm.c: Include "progspace.h". (tui_set_disassem_content): Pass an address space to breakpoint_here_p. * NEWS: Mention multi-program debugging support. Mention new commands "add-inferior", "clone-inferior", "remove-inferior", "maint info program-spaces", and new option "set follow-exec-mode". 2009-10-19 Pedro Alves <pedro@codesourcery.com> Stan Shebs <stan@codesourcery.com> gdb/doc/ * observer.texi (new_inferior): Rename to... (inferior_appeared): ... this. 2009-10-19 Pedro Alves <pedro@codesourcery.com> Stan Shebs <stan@codesourcery.com> gdb/testsuite/ * gdb.base/foll-vfork.exp: Adjust to spell out "follow-fork". * gdb.base/foll-exec.exp: Adjust to expect a process id before "Executing new program". * gdb.base/foll-fork.exp: Adjust to spell out "follow-fork". * gdb.base/multi-forks.exp: Ditto. Adjust to the inferior being left listed after having been killed. * gdb.base/attach.exp: Adjust to spell out "symbol-file". * gdb.base/maint.exp: Adjust test. * Makefile.in (ALL_SUBDIRS): Add gdb.multi. * gdb.multi/Makefile.in: New. * gdb.multi/base.exp: New. * gdb.multi/goodbye.c: New. * gdb.multi/hangout.c: New. * gdb.multi/hello.c: New. * gdb.multi/bkpt-multi-exec.c: New. * gdb.multi/bkpt-multi-exec.exp: New. * gdb.multi/crashme.c: New. 2009-10-19 Pedro Alves <pedro@codesourcery.com> Stan Shebs <stan@codesourcery.com> gdb/doc/ * gdb.texinfo (Inferiors): Rename node to ... (Inferiors and Programs): ... this. Mention running multiple programs in the same debug session. <info inferiors>: Mention the new 'Executable' column if "info inferiors". Update examples. Document the "add-inferior", "clone-inferior", "remove-inferior" and "maint info program-spaces" commands. (Process): Rename node to... (Forks): ... this. Document "set|show follow-exec-mode".
2009-10-19 11:51:43 +02:00
/* Return the frame's program space. */
extern struct program_space *get_frame_program_space (struct frame_info *);
/* Unwind THIS frame's program space from the NEXT frame. */
extern struct program_space *frame_unwind_program_space (struct frame_info *);
/* Return the frame's address space. */
extern struct address_space *get_frame_address_space (struct frame_info *);
/* For frames where we can not unwind further, describe why. */
enum unwind_stop_reason
{
#define SET(name, description) name,
#define FIRST_ENTRY(name) UNWIND_FIRST = name,
#define LAST_ENTRY(name) UNWIND_LAST = name,
#define FIRST_ERROR(name) UNWIND_FIRST_ERROR = name,
#include "unwind_stop_reasons.def"
#undef SET
#undef FIRST_ENTRY
#undef LAST_ENTRY
#undef FIRST_ERROR
};
/* Return the reason why we can't unwind past this frame. */
enum unwind_stop_reason get_frame_unwind_stop_reason (struct frame_info *);
/* Translate a reason code to an informative string. */
const char *frame_stop_reason_string (enum unwind_stop_reason);
/* Unwind the stack frame so that the value of REGNUM, in the previous
(up, older) frame is returned. If VALUEP is NULL, don't
fetch/compute the value. Instead just return the location of the
value. */
extern void frame_register_unwind (struct frame_info *frame, int regnum,
int *optimizedp, int *unavailablep,
enum lval_type *lvalp,
CORE_ADDR *addrp, int *realnump,
gdb_byte *valuep);
/* Fetch a register from this, or unwind a register from the next
frame. Note that the get_frame methods are wrappers to
frame->next->unwind. They all [potentially] throw an error if the
Convert frame unwinders to use the current frame and "struct value". * frame.c (frame_debug): Make global. (get_frame_id): Pass this frame to unwinder routines. (frame_pc_unwind): Remove unused unwind->prev_pc support. (do_frame_register_read): Do not discard the return value of frame_register_read. (frame_register_unwind): Remove debug messages. Use frame_unwind_register_value. (frame_unwind_register_value, get_frame_register_value): New functions. (create_new_frame, get_frame_base_address, get_frame_locals_address) (get_frame_args_address, get_frame_type): Pass this frame to unwinder routines. (frame_cleanup_after_sniffer, frame_prepare_for_sniffer): New functions. * frame.h: Update comments. (frame_debug, frame_unwind_register_value, get_frame_register_value) (frame_prepare_for_sniffer): Declare. * frame-unwind.h: Update comments and parameter names. (default_frame_sniffer): Declare. (frame_prev_register_ftype): Return a struct value *. (struct frame_unwind): Remove prev_pc member. (frame_unwind_sniffer_ftype, frame_unwind_append_sniffer): Delete. (frame_unwind_append_unwinder, frame_unwind_got_optimized) (frame_unwind_got_register, frame_unwind_got_memory) (frame_unwind_got_constant, frame_unwind_got_address): Declare. * frame-base.h: Update comments and parameter names. * valops.c (value_fetch_lazy): Use get_frame_register_value. Iterate if necessary. Add debugging output. * sentinel-frame.c (sentinel_frame_prev_register) (sentinel_frame_this_id): Update for new signature. (sentinel_frame_prev_pc): Delete. (sentinel_frame_unwinder): Remove prev_pc. * ia64-tdep.c (ia64_libunwind_frame_unwind): Do not initialize prev_pc. * libunwind-frame.c (libunwind_frame_unwind): Likewise. * frame-unwind.c (struct frame_unwind_table_entry): Remove sniffer. (frame_unwind_append_sniffer): Delete. (frame_unwind_append_unwinder): New function. (frame_unwind_find_by_frame): Take this frame. Only use sniffers from unwinders. Use frame_prepare_for_sniffer. (default_frame_sniffer, frame_unwind_got_optimized) (frame_unwind_got_register, frame_unwind_got_memory) (frame_unwind_got_constant, frame_unwind_got_address): New functions. * dummy-frame.c (dummy_frame_sniffer): Use gdbarch_dummy_id. (dummy_frame_prev_register, dummy_frame_this_id): Update for new signature. * gdbarch.sh: Replace unwind_dummy_id with dummy_id. * gdbarch.c, gdbarch.c: Regenerated. * frame-base.c (default_frame_base_address) (default_frame_locals_address, default_frame_args_address): Update for new signature. (frame_base_find_by_frame): Pass this frame to unwinder routines. * infcall.c (call_function_by_hand): Update comments. * Makefile.in (frame-unwind.o): Update dependencies. * gdbint.texinfo (Stack Frames): New chapter. (Algorithms): Move Frames text to the new chapter. (Target Conditionals): Delete SAVE_DUMMY_FRAME_TOS. Document gdbarch_dummy_id instead of gdbarch_unwind_dummy_id.
2008-04-30 23:16:46 +02:00
fetch fails. The value methods never return NULL, but usually
do return a lazy value. */
extern void frame_unwind_register (struct frame_info *frame,
int regnum, gdb_byte *buf);
extern void get_frame_register (struct frame_info *frame,
int regnum, gdb_byte *buf);
Convert frame unwinders to use the current frame and "struct value". * frame.c (frame_debug): Make global. (get_frame_id): Pass this frame to unwinder routines. (frame_pc_unwind): Remove unused unwind->prev_pc support. (do_frame_register_read): Do not discard the return value of frame_register_read. (frame_register_unwind): Remove debug messages. Use frame_unwind_register_value. (frame_unwind_register_value, get_frame_register_value): New functions. (create_new_frame, get_frame_base_address, get_frame_locals_address) (get_frame_args_address, get_frame_type): Pass this frame to unwinder routines. (frame_cleanup_after_sniffer, frame_prepare_for_sniffer): New functions. * frame.h: Update comments. (frame_debug, frame_unwind_register_value, get_frame_register_value) (frame_prepare_for_sniffer): Declare. * frame-unwind.h: Update comments and parameter names. (default_frame_sniffer): Declare. (frame_prev_register_ftype): Return a struct value *. (struct frame_unwind): Remove prev_pc member. (frame_unwind_sniffer_ftype, frame_unwind_append_sniffer): Delete. (frame_unwind_append_unwinder, frame_unwind_got_optimized) (frame_unwind_got_register, frame_unwind_got_memory) (frame_unwind_got_constant, frame_unwind_got_address): Declare. * frame-base.h: Update comments and parameter names. * valops.c (value_fetch_lazy): Use get_frame_register_value. Iterate if necessary. Add debugging output. * sentinel-frame.c (sentinel_frame_prev_register) (sentinel_frame_this_id): Update for new signature. (sentinel_frame_prev_pc): Delete. (sentinel_frame_unwinder): Remove prev_pc. * ia64-tdep.c (ia64_libunwind_frame_unwind): Do not initialize prev_pc. * libunwind-frame.c (libunwind_frame_unwind): Likewise. * frame-unwind.c (struct frame_unwind_table_entry): Remove sniffer. (frame_unwind_append_sniffer): Delete. (frame_unwind_append_unwinder): New function. (frame_unwind_find_by_frame): Take this frame. Only use sniffers from unwinders. Use frame_prepare_for_sniffer. (default_frame_sniffer, frame_unwind_got_optimized) (frame_unwind_got_register, frame_unwind_got_memory) (frame_unwind_got_constant, frame_unwind_got_address): New functions. * dummy-frame.c (dummy_frame_sniffer): Use gdbarch_dummy_id. (dummy_frame_prev_register, dummy_frame_this_id): Update for new signature. * gdbarch.sh: Replace unwind_dummy_id with dummy_id. * gdbarch.c, gdbarch.c: Regenerated. * frame-base.c (default_frame_base_address) (default_frame_locals_address, default_frame_args_address): Update for new signature. (frame_base_find_by_frame): Pass this frame to unwinder routines. * infcall.c (call_function_by_hand): Update comments. * Makefile.in (frame-unwind.o): Update dependencies. * gdbint.texinfo (Stack Frames): New chapter. (Algorithms): Move Frames text to the new chapter. (Target Conditionals): Delete SAVE_DUMMY_FRAME_TOS. Document gdbarch_dummy_id instead of gdbarch_unwind_dummy_id.
2008-04-30 23:16:46 +02:00
struct value *frame_unwind_register_value (struct frame_info *frame,
int regnum);
struct value *get_frame_register_value (struct frame_info *frame,
int regnum);
extern LONGEST frame_unwind_register_signed (struct frame_info *frame,
int regnum);
extern LONGEST get_frame_register_signed (struct frame_info *frame,
int regnum);
extern ULONGEST frame_unwind_register_unsigned (struct frame_info *frame,
int regnum);
extern ULONGEST get_frame_register_unsigned (struct frame_info *frame,
int regnum);
/* Read a register from this, or unwind a register from the next
frame. Note that the read_frame methods are wrappers to
get_frame_register_value, that do not throw if the result is
optimized out or unavailable. */
extern int read_frame_register_unsigned (struct frame_info *frame,
int regnum, ULONGEST *val);
/* Get the value of the register that belongs to this FRAME. This
2004-09-08 06:56:20 +02:00
function is a wrapper to the call sequence ``frame_register_unwind
(get_next_frame (FRAME))''. As per frame_register_unwind(), if
VALUEP is NULL, the registers value is not fetched/computed. */
extern void frame_register (struct frame_info *frame, int regnum,
int *optimizedp, int *unavailablep,
enum lval_type *lvalp,
CORE_ADDR *addrp, int *realnump,
gdb_byte *valuep);
2003-06-14 Andrew Cagney <cagney@redhat.com> Mark Kettenis <kettenis@gnu.org> * gdbarch.sh (CONVERT_REGISTER_P): Add "type" parameter. (REGISTER_TO_VALUE, VALUE_TO_REGISTER): Replace raw buffer parameter with "frame". * gdbarch.h, gdbarch.c: Re-generate. * frame.h (put_frame_register): Declare. * frame.c (put_frame_register): New function. * arch-utils.c (legacy_convert_register_p): Add "type" parameter. (legacy_register_to_value): Rewrite, use "frame" to get the register value. (legacy_value_to_register): Rewrite, use "frame" to find the register's location before storing. * arch-utils.h (legacy_convert_register_p): Update. (legacy_register_to_value, legacy_value_to_register): Update. * findvar.c (value_from_register): Rewrite, eliminate use of REGISTER_CONVERT_TO_TYPE, pass "type" to CONVERT_REGISTER_P, pass "frame" to REGISTER_TO_VALUE. * valops.c (value_assign): Move the CONVERT_REGISTER code to the lval_reg_frame_relative + lval_register branch of the switch. Do not use REGISTER_CONVERT_FROM_TYPE. Use put_frame_register. * i386-tdep.c (I386_EBX_REGNUM, I386_ECX_REGNUM, I386_ESI_REGNUM, I386_EDI_REGNUM): New defines. (i386_next_regnum, i386_convert_register_p, i386_register_to_value, i386_value_to_register): New functions. (i386_register_convertible, i386_register_convert_to_virtual, i386_convert_to_raw): Remove functions. (i386_gdbarch_init): Set convert_register_p, register_to_value and value_to_register instead of register_convertible, register_convert_to_virtual and register_convert_to_raw. * mips-tdep.c (mips_convert_register_p): New function. (mips_value_to_register): Replace mips_register_convert_from_type. (mips_register_to_value): Replace mips_register_convert_to_type. (mips_gdbarch_init): Set conver_register_p, value_to_register and register_to_value. * alpha-tdep.c (alpha_convert_register_p): Update. (alpha_value_to_register): Update, store the register. (alpha_register_to_value): Update, fetch the register.
2003-06-15 00:35:25 +02:00
/* The reverse. Store a register value relative to the specified
frame. Note: this call makes the frame's state undefined. The
register and frame caches must be flushed. */
extern void put_frame_register (struct frame_info *frame, int regnum,
const gdb_byte *buf);
2003-06-14 Andrew Cagney <cagney@redhat.com> Mark Kettenis <kettenis@gnu.org> * gdbarch.sh (CONVERT_REGISTER_P): Add "type" parameter. (REGISTER_TO_VALUE, VALUE_TO_REGISTER): Replace raw buffer parameter with "frame". * gdbarch.h, gdbarch.c: Re-generate. * frame.h (put_frame_register): Declare. * frame.c (put_frame_register): New function. * arch-utils.c (legacy_convert_register_p): Add "type" parameter. (legacy_register_to_value): Rewrite, use "frame" to get the register value. (legacy_value_to_register): Rewrite, use "frame" to find the register's location before storing. * arch-utils.h (legacy_convert_register_p): Update. (legacy_register_to_value, legacy_value_to_register): Update. * findvar.c (value_from_register): Rewrite, eliminate use of REGISTER_CONVERT_TO_TYPE, pass "type" to CONVERT_REGISTER_P, pass "frame" to REGISTER_TO_VALUE. * valops.c (value_assign): Move the CONVERT_REGISTER code to the lval_reg_frame_relative + lval_register branch of the switch. Do not use REGISTER_CONVERT_FROM_TYPE. Use put_frame_register. * i386-tdep.c (I386_EBX_REGNUM, I386_ECX_REGNUM, I386_ESI_REGNUM, I386_EDI_REGNUM): New defines. (i386_next_regnum, i386_convert_register_p, i386_register_to_value, i386_value_to_register): New functions. (i386_register_convertible, i386_register_convert_to_virtual, i386_convert_to_raw): Remove functions. (i386_gdbarch_init): Set convert_register_p, register_to_value and value_to_register instead of register_convertible, register_convert_to_virtual and register_convert_to_raw. * mips-tdep.c (mips_convert_register_p): New function. (mips_value_to_register): Replace mips_register_convert_from_type. (mips_register_to_value): Replace mips_register_convert_to_type. (mips_gdbarch_init): Set conver_register_p, value_to_register and register_to_value. * alpha-tdep.c (alpha_convert_register_p): Update. (alpha_value_to_register): Update, store the register. (alpha_register_to_value): Update, fetch the register.
2003-06-15 00:35:25 +02:00
/* Read LEN bytes from one or multiple registers starting with REGNUM
gdb/ * dwarf2loc.c (read_pieced_value): Handle get_frame_register_bytes returning that the register piece is unavailable/optimized out. (write_pieced_value): Handle get_frame_register_bytes returning that the register piece is unavailable/optimized out when doing a read-modify write of a bitfield. * findvar.c (value_from_register): Handle get_frame_register_bytes returning that the register piece is unavailable/optimized out. * frame.c (get_frame_register_bytes): New parameters `optimizedp' and `unavailablep'. Throw error on bad debug info. Use frame_register instead of frame_register_read, to fill in the new arguments. * frame.h (get_frame_register_bytes): New parameters `optimizedp' and `unavailablep'. * valops.c: (value_assign): Adjust, and handle get_frame_register_bytes failing. * spu-tdep.c: Include exceptions.h. (spu_software_single_step): Adjust, and handle get_frame_register_bytes failing. (spu_get_longjmp_target): Ditto. * gdbarch.sh (register_to_value): Change to return int. New parameters `optimizedp' and `unavailablep'. * gdbarch.h, gdbarch.c: Regenerate. * i386-tdep.c (i386_register_to_value): Adjust to new gdbarch_register_to_value interface. * i387-tdep.c (i387_register_to_value): Ditto. * i387-tdep.h (i387_register_to_value): Ditto. * alpha-tdep.c (alpha_register_to_value): Ditto. * ia64-tdep.c (ia64_register_to_value): Ditto. * m68k-tdep.c (m68k_register_to_value): Ditto. * mips-tdep.c (mips_register_to_value): Ditto. * rs6000-tdep.c (rs6000_register_to_value): Ditto.
2011-03-18 19:42:41 +01:00
in frame FRAME, starting at OFFSET, into BUF. If the register
contents are optimized out or unavailable, set *OPTIMIZEDP,
*UNAVAILABLEP accordingly. */
extern int get_frame_register_bytes (struct frame_info *frame, int regnum,
CORE_ADDR offset, int len,
gdb/ * dwarf2loc.c (read_pieced_value): Handle get_frame_register_bytes returning that the register piece is unavailable/optimized out. (write_pieced_value): Handle get_frame_register_bytes returning that the register piece is unavailable/optimized out when doing a read-modify write of a bitfield. * findvar.c (value_from_register): Handle get_frame_register_bytes returning that the register piece is unavailable/optimized out. * frame.c (get_frame_register_bytes): New parameters `optimizedp' and `unavailablep'. Throw error on bad debug info. Use frame_register instead of frame_register_read, to fill in the new arguments. * frame.h (get_frame_register_bytes): New parameters `optimizedp' and `unavailablep'. * valops.c: (value_assign): Adjust, and handle get_frame_register_bytes failing. * spu-tdep.c: Include exceptions.h. (spu_software_single_step): Adjust, and handle get_frame_register_bytes failing. (spu_get_longjmp_target): Ditto. * gdbarch.sh (register_to_value): Change to return int. New parameters `optimizedp' and `unavailablep'. * gdbarch.h, gdbarch.c: Regenerate. * i386-tdep.c (i386_register_to_value): Adjust to new gdbarch_register_to_value interface. * i387-tdep.c (i387_register_to_value): Ditto. * i387-tdep.h (i387_register_to_value): Ditto. * alpha-tdep.c (alpha_register_to_value): Ditto. * ia64-tdep.c (ia64_register_to_value): Ditto. * m68k-tdep.c (m68k_register_to_value): Ditto. * mips-tdep.c (mips_register_to_value): Ditto. * rs6000-tdep.c (rs6000_register_to_value): Ditto.
2011-03-18 19:42:41 +01:00
gdb_byte *myaddr,
int *optimizedp, int *unavailablep);
/* Write LEN bytes to one or multiple registers starting with REGNUM
in frame FRAME, starting at OFFSET, into BUF. */
extern void put_frame_register_bytes (struct frame_info *frame, int regnum,
CORE_ADDR offset, int len,
const gdb_byte *myaddr);
/* Unwind the PC. Strictly speaking return the resume address of the
calling frame. For GDB, `pc' is the resume address and not a
specific register. */
extern CORE_ADDR frame_unwind_caller_pc (struct frame_info *frame);
/* Discard the specified frame. Restoring the registers to the state
of the caller. */
extern void frame_pop (struct frame_info *frame);
/* Return memory from the specified frame. A frame knows its thread /
LWP and hence can find its way down to a target. The assumption
here is that the current and previous frame share a common address
space.
If the memory read fails, these methods throw an error.
NOTE: cagney/2003-06-03: Should there be unwind versions of these
methods? That isn't clear. Can code, for instance, assume that
this and the previous frame's memory or architecture are identical?
If architecture / memory changes are always separated by special
adaptor frames this should be ok. */
extern void get_frame_memory (struct frame_info *this_frame, CORE_ADDR addr,
gdb_byte *buf, int len);
extern LONGEST get_frame_memory_signed (struct frame_info *this_frame,
CORE_ADDR memaddr, int len);
extern ULONGEST get_frame_memory_unsigned (struct frame_info *this_frame,
CORE_ADDR memaddr, int len);
/* Same as above, but return non-zero when the entire memory read
succeeds, zero otherwize. */
extern int safe_frame_unwind_memory (struct frame_info *this_frame,
CORE_ADDR addr, gdb_byte *buf, int len);
/* Return this frame's architecture. */
extern struct gdbarch *get_frame_arch (struct frame_info *this_frame);
/* Return the previous frame's architecture. */
extern struct gdbarch *frame_unwind_arch (struct frame_info *frame);
/* Return the previous frame's architecture, skipping inline functions. */
extern struct gdbarch *frame_unwind_caller_arch (struct frame_info *frame);
/* Values for the source flag to be used in print_frame_info_base(). */
2000-01-18 01:55:13 +01:00
enum print_what
{
2011-01-07 Michael Snyder <msnyder@vmware.com> * ada-lang.c: Comment cleanup, mostly periods and spaces. * ada-lang.h: Ditto. * ada-tasks.c: Ditto. * ada-valprint.c: Ditto. * aix-threads.c: Ditto. * alpha-linux-nat.c: Ditto. * alpha-linux-tdep.c: Ditto. * alpha-mdebug-tdep.c: Ditto. * alpha-nat.c: Ditto. * alpha-osf1-tdep.c: Ditto. * alpha-tdep.c: Ditto. * alphabsd-nat.c: Ditto. * alphabsd-tdep.c: Ditto. * amd64-darwin-tdep.c: Ditto. * amd64-linux-nat.c: Ditto. * amd64-linux-tdep.c: Ditto. * amd64-sol2-tdep.c: Ditto. * amd64-tdep.c: Ditto. * amd64-fbsd-tdep.c: Ditto. * amd64-nbsd-tdep.c: Ditto. * amd64-obsd-tdep.c: Ditto. * amd64-linux-nat.c: Ditto. * amd64-linux-tdep.c: Ditto. * arm-tdep.c: Ditto. * arm-tdep.h: Ditto. * armnbsd-nat.c: Ditto. * avr-tdep.c: Ditto. * bfin-tdep.c: Ditto. * bsd-kvm.c: Ditto. * c-typeprintc: Ditto. * c-valprint.c: Ditto. * coff-pe-read.h: Ditto. * coffreead.c: Ditto. * cris-tdep.c: Ditto. * d-lang.c: Ditto. * darwin-nat-info.c: Ditto. * darwin-nat.c: Ditto. * dbug-rom.c: Ditto. * dbxread.c: Ditto. * dcache.c: Ditto. * dcache.h: Ditto. * dec-thread.c: Ditto. * defs.h: Ditto. * demangle.c: Ditto. * dicos-tdep.c: Ditto. * dictionary.c: Ditto. * dictionary.h: Ditto. * dink32-rom.c: Ditto. * disasm.c: Ditto. * doublest.c: Ditto. * dsrec.c: Ditto. * dummy-frame.c: Ditto. * dwarf2-frame.c: Ditto. * dwarf2expr.c: Ditto. * dwarf2loc.c: Ditto. * dwarf2read.c: Ditto. * elfread.c: Ditto. * environ.c: Ditto. * eval.c: Ditto. * event-top.h: Ditto. * exceptions.c: Ditto. * exceptions.h: Ditto. * exec.c: Ditto. * expprint.c: Ditto. * expression.h: Ditto. * f-exp.y: Ditto. * f-lang.c: Ditto. * f-lang.h: Ditto. * f-typeprint.c: Ditto. * f-valprint.c: Ditto. * fbsd-nat.c: Ditto. * findvar.c: Ditto. * fork-child.c: Ditto. * frame.c: Ditto. * frame.h: Ditto. * frv-linux-tdep.c: Ditto. * frv-tdep.c: Ditto. * gcore.c: Ditto. * gdb-stabs.h: Ditto. * gdb_assert.h: Ditto. * gdb_string.h: Ditto. * gdb_thread_db.h: Ditto. * gdb_wait.h: Ditto. * gdbarch.sh: Ditto. * gdbcore.h: Ditto. * gdbthread.h: Ditto. * gdbtypes.c: Ditto. * gdbtypes.h: Ditto. * gnu-nat.c: Ditto. * gnu-nat.h: Ditto. * gnu-v2-abi.c: Ditto. * gnu-v3-abi.c: Ditto. * go32-nat.c: Ditto. * gdbarch.c: Regenerate. * gdbarch.h: Regenerate.
2011-01-07 20:36:19 +01:00
/* Print only the source line, like in stepi. */
2000-01-18 01:55:13 +01:00
SRC_LINE = -1,
/* Print only the location, i.e. level, address (sometimes)
2011-01-07 Michael Snyder <msnyder@vmware.com> * ada-lang.c: Comment cleanup, mostly periods and spaces. * ada-lang.h: Ditto. * ada-tasks.c: Ditto. * ada-valprint.c: Ditto. * aix-threads.c: Ditto. * alpha-linux-nat.c: Ditto. * alpha-linux-tdep.c: Ditto. * alpha-mdebug-tdep.c: Ditto. * alpha-nat.c: Ditto. * alpha-osf1-tdep.c: Ditto. * alpha-tdep.c: Ditto. * alphabsd-nat.c: Ditto. * alphabsd-tdep.c: Ditto. * amd64-darwin-tdep.c: Ditto. * amd64-linux-nat.c: Ditto. * amd64-linux-tdep.c: Ditto. * amd64-sol2-tdep.c: Ditto. * amd64-tdep.c: Ditto. * amd64-fbsd-tdep.c: Ditto. * amd64-nbsd-tdep.c: Ditto. * amd64-obsd-tdep.c: Ditto. * amd64-linux-nat.c: Ditto. * amd64-linux-tdep.c: Ditto. * arm-tdep.c: Ditto. * arm-tdep.h: Ditto. * armnbsd-nat.c: Ditto. * avr-tdep.c: Ditto. * bfin-tdep.c: Ditto. * bsd-kvm.c: Ditto. * c-typeprintc: Ditto. * c-valprint.c: Ditto. * coff-pe-read.h: Ditto. * coffreead.c: Ditto. * cris-tdep.c: Ditto. * d-lang.c: Ditto. * darwin-nat-info.c: Ditto. * darwin-nat.c: Ditto. * dbug-rom.c: Ditto. * dbxread.c: Ditto. * dcache.c: Ditto. * dcache.h: Ditto. * dec-thread.c: Ditto. * defs.h: Ditto. * demangle.c: Ditto. * dicos-tdep.c: Ditto. * dictionary.c: Ditto. * dictionary.h: Ditto. * dink32-rom.c: Ditto. * disasm.c: Ditto. * doublest.c: Ditto. * dsrec.c: Ditto. * dummy-frame.c: Ditto. * dwarf2-frame.c: Ditto. * dwarf2expr.c: Ditto. * dwarf2loc.c: Ditto. * dwarf2read.c: Ditto. * elfread.c: Ditto. * environ.c: Ditto. * eval.c: Ditto. * event-top.h: Ditto. * exceptions.c: Ditto. * exceptions.h: Ditto. * exec.c: Ditto. * expprint.c: Ditto. * expression.h: Ditto. * f-exp.y: Ditto. * f-lang.c: Ditto. * f-lang.h: Ditto. * f-typeprint.c: Ditto. * f-valprint.c: Ditto. * fbsd-nat.c: Ditto. * findvar.c: Ditto. * fork-child.c: Ditto. * frame.c: Ditto. * frame.h: Ditto. * frv-linux-tdep.c: Ditto. * frv-tdep.c: Ditto. * gcore.c: Ditto. * gdb-stabs.h: Ditto. * gdb_assert.h: Ditto. * gdb_string.h: Ditto. * gdb_thread_db.h: Ditto. * gdb_wait.h: Ditto. * gdbarch.sh: Ditto. * gdbcore.h: Ditto. * gdbthread.h: Ditto. * gdbtypes.c: Ditto. * gdbtypes.h: Ditto. * gnu-nat.c: Ditto. * gnu-nat.h: Ditto. * gnu-v2-abi.c: Ditto. * gnu-v3-abi.c: Ditto. * go32-nat.c: Ditto. * gdbarch.c: Regenerate. * gdbarch.h: Regenerate.
2011-01-07 20:36:19 +01:00
function, args, file, line, line num. */
2000-01-18 01:55:13 +01:00
LOCATION,
2011-01-07 Michael Snyder <msnyder@vmware.com> * ada-lang.c: Comment cleanup, mostly periods and spaces. * ada-lang.h: Ditto. * ada-tasks.c: Ditto. * ada-valprint.c: Ditto. * aix-threads.c: Ditto. * alpha-linux-nat.c: Ditto. * alpha-linux-tdep.c: Ditto. * alpha-mdebug-tdep.c: Ditto. * alpha-nat.c: Ditto. * alpha-osf1-tdep.c: Ditto. * alpha-tdep.c: Ditto. * alphabsd-nat.c: Ditto. * alphabsd-tdep.c: Ditto. * amd64-darwin-tdep.c: Ditto. * amd64-linux-nat.c: Ditto. * amd64-linux-tdep.c: Ditto. * amd64-sol2-tdep.c: Ditto. * amd64-tdep.c: Ditto. * amd64-fbsd-tdep.c: Ditto. * amd64-nbsd-tdep.c: Ditto. * amd64-obsd-tdep.c: Ditto. * amd64-linux-nat.c: Ditto. * amd64-linux-tdep.c: Ditto. * arm-tdep.c: Ditto. * arm-tdep.h: Ditto. * armnbsd-nat.c: Ditto. * avr-tdep.c: Ditto. * bfin-tdep.c: Ditto. * bsd-kvm.c: Ditto. * c-typeprintc: Ditto. * c-valprint.c: Ditto. * coff-pe-read.h: Ditto. * coffreead.c: Ditto. * cris-tdep.c: Ditto. * d-lang.c: Ditto. * darwin-nat-info.c: Ditto. * darwin-nat.c: Ditto. * dbug-rom.c: Ditto. * dbxread.c: Ditto. * dcache.c: Ditto. * dcache.h: Ditto. * dec-thread.c: Ditto. * defs.h: Ditto. * demangle.c: Ditto. * dicos-tdep.c: Ditto. * dictionary.c: Ditto. * dictionary.h: Ditto. * dink32-rom.c: Ditto. * disasm.c: Ditto. * doublest.c: Ditto. * dsrec.c: Ditto. * dummy-frame.c: Ditto. * dwarf2-frame.c: Ditto. * dwarf2expr.c: Ditto. * dwarf2loc.c: Ditto. * dwarf2read.c: Ditto. * elfread.c: Ditto. * environ.c: Ditto. * eval.c: Ditto. * event-top.h: Ditto. * exceptions.c: Ditto. * exceptions.h: Ditto. * exec.c: Ditto. * expprint.c: Ditto. * expression.h: Ditto. * f-exp.y: Ditto. * f-lang.c: Ditto. * f-lang.h: Ditto. * f-typeprint.c: Ditto. * f-valprint.c: Ditto. * fbsd-nat.c: Ditto. * findvar.c: Ditto. * fork-child.c: Ditto. * frame.c: Ditto. * frame.h: Ditto. * frv-linux-tdep.c: Ditto. * frv-tdep.c: Ditto. * gcore.c: Ditto. * gdb-stabs.h: Ditto. * gdb_assert.h: Ditto. * gdb_string.h: Ditto. * gdb_thread_db.h: Ditto. * gdb_wait.h: Ditto. * gdbarch.sh: Ditto. * gdbcore.h: Ditto. * gdbthread.h: Ditto. * gdbtypes.c: Ditto. * gdbtypes.h: Ditto. * gnu-nat.c: Ditto. * gnu-nat.h: Ditto. * gnu-v2-abi.c: Ditto. * gnu-v3-abi.c: Ditto. * go32-nat.c: Ditto. * gdbarch.c: Regenerate. * gdbarch.h: Regenerate.
2011-01-07 20:36:19 +01:00
/* Print both of the above. */
2000-01-18 01:55:13 +01:00
SRC_AND_LOC,
2011-01-07 Michael Snyder <msnyder@vmware.com> * ada-lang.c: Comment cleanup, mostly periods and spaces. * ada-lang.h: Ditto. * ada-tasks.c: Ditto. * ada-valprint.c: Ditto. * aix-threads.c: Ditto. * alpha-linux-nat.c: Ditto. * alpha-linux-tdep.c: Ditto. * alpha-mdebug-tdep.c: Ditto. * alpha-nat.c: Ditto. * alpha-osf1-tdep.c: Ditto. * alpha-tdep.c: Ditto. * alphabsd-nat.c: Ditto. * alphabsd-tdep.c: Ditto. * amd64-darwin-tdep.c: Ditto. * amd64-linux-nat.c: Ditto. * amd64-linux-tdep.c: Ditto. * amd64-sol2-tdep.c: Ditto. * amd64-tdep.c: Ditto. * amd64-fbsd-tdep.c: Ditto. * amd64-nbsd-tdep.c: Ditto. * amd64-obsd-tdep.c: Ditto. * amd64-linux-nat.c: Ditto. * amd64-linux-tdep.c: Ditto. * arm-tdep.c: Ditto. * arm-tdep.h: Ditto. * armnbsd-nat.c: Ditto. * avr-tdep.c: Ditto. * bfin-tdep.c: Ditto. * bsd-kvm.c: Ditto. * c-typeprintc: Ditto. * c-valprint.c: Ditto. * coff-pe-read.h: Ditto. * coffreead.c: Ditto. * cris-tdep.c: Ditto. * d-lang.c: Ditto. * darwin-nat-info.c: Ditto. * darwin-nat.c: Ditto. * dbug-rom.c: Ditto. * dbxread.c: Ditto. * dcache.c: Ditto. * dcache.h: Ditto. * dec-thread.c: Ditto. * defs.h: Ditto. * demangle.c: Ditto. * dicos-tdep.c: Ditto. * dictionary.c: Ditto. * dictionary.h: Ditto. * dink32-rom.c: Ditto. * disasm.c: Ditto. * doublest.c: Ditto. * dsrec.c: Ditto. * dummy-frame.c: Ditto. * dwarf2-frame.c: Ditto. * dwarf2expr.c: Ditto. * dwarf2loc.c: Ditto. * dwarf2read.c: Ditto. * elfread.c: Ditto. * environ.c: Ditto. * eval.c: Ditto. * event-top.h: Ditto. * exceptions.c: Ditto. * exceptions.h: Ditto. * exec.c: Ditto. * expprint.c: Ditto. * expression.h: Ditto. * f-exp.y: Ditto. * f-lang.c: Ditto. * f-lang.h: Ditto. * f-typeprint.c: Ditto. * f-valprint.c: Ditto. * fbsd-nat.c: Ditto. * findvar.c: Ditto. * fork-child.c: Ditto. * frame.c: Ditto. * frame.h: Ditto. * frv-linux-tdep.c: Ditto. * frv-tdep.c: Ditto. * gcore.c: Ditto. * gdb-stabs.h: Ditto. * gdb_assert.h: Ditto. * gdb_string.h: Ditto. * gdb_thread_db.h: Ditto. * gdb_wait.h: Ditto. * gdbarch.sh: Ditto. * gdbcore.h: Ditto. * gdbthread.h: Ditto. * gdbtypes.c: Ditto. * gdbtypes.h: Ditto. * gnu-nat.c: Ditto. * gnu-nat.h: Ditto. * gnu-v2-abi.c: Ditto. * gnu-v3-abi.c: Ditto. * go32-nat.c: Ditto. * gdbarch.c: Regenerate. * gdbarch.h: Regenerate.
2011-01-07 20:36:19 +01:00
/* Print location only, but always include the address. */
2000-01-18 01:55:13 +01:00
LOC_AND_ADDRESS
};
/* Allocate zero initialized memory from the frame cache obstack.
Appendices to the frame info (such as the unwind cache) should
allocate memory using this method. */
extern void *frame_obstack_zalloc (unsigned long size);
2011-01-05 Michael Snyder <msnyder@vmware.com> * addrmap.c: Shorten lines of >= 80 columns. * arch-utils.c: Ditto. * arch-utils.h: Ditto. * ax-gdb.c: Ditto. * ax-general.c: Ditto. * bcache.c: Ditto. * blockframe.c: Ditto. * breakpoint.c: Ditto. * buildsym.c: Ditto. * c-lang.c: Ditto. * c-typeprint.c: Ditto. * charset.c: Ditto. * coffread.c: Ditto. * command.h: Ditto. * corelow.c: Ditto. * cp-abi.c: Ditto. * cp-namespace.c: Ditto. * cp-support.c: Ditto. * dbug-rom.c: Ditto. * dbxread.c: Ditto. * defs.h: Ditto. * dfp.c: Ditto. * dfp.h: Ditto. * dictionary.c: Ditto. * disasm.c: Ditto. * doublest.c: Ditto. * dwarf2-frame.c: Ditto. * dwarf2expr.c: Ditto. * dwarf2loc.c: Ditto. * dwarf2read.c: Ditto. * elfread.c: Ditto. * eval.c: Ditto. * event-loop.c: Ditto. * event-loop.h: Ditto. * exceptions.h: Ditto. * exec.c: Ditto. * expprint.c: Ditto. * expression.h: Ditto. * f-lang.c: Ditto. * f-valprint.c: Ditto. * findcmd.c: Ditto. * frame-base.c: Ditto. * frame-unwind.c: Ditto. * frame-unwind.h: Ditto. * frame.c: Ditto. * frame.h: Ditto. * gcore.c: Ditto. * gdb-stabs.h: Ditto. * gdb_assert.h: Ditto. * gdb_dirent.h: Ditto. * gdb_obstack.h: Ditto. * gdbcore.h: Ditto. * gdbtypes.c: Ditto. * gdbtypes.h: Ditto. * inf-ttrace.c: Ditto. * infcall.c: Ditto. * infcmd.c: Ditto. * inflow.c: Ditto. * infrun.c: Ditto. * inline-frame.h: Ditto. * language.c: Ditto. * language.h: Ditto. * libunwind-frame.c: Ditto. * libunwind-frame.h: Ditto. * linespec.c: Ditto. * linux-nat.c: Ditto. * linux-nat.h: Ditto. * linux-thread-db.c: Ditto. * machoread.c: Ditto. * macroexp.c: Ditto. * macrotab.c: Ditto. * main.c: Ditto. * maint.c: Ditto. * mdebugread.c: Ditto. * memattr.c: Ditto. * minsyms.c: Ditto. * monitor.c: Ditto. * monitor.h: Ditto. * objfiles.c: Ditto. * objfiles.h: Ditto. * osabi.c: Ditto. * p-typeprint.c: Ditto. * p-valprint.c: Ditto. * parse.c: Ditto. * printcmd.c: Ditto. * proc-events.c: Ditto. * procfs.c: Ditto. * progspace.c: Ditto. * progspace.h: Ditto. * psympriv.h: Ditto. * psymtab.c: Ditto. * record.c: Ditto. * regcache.c: Ditto. * regcache.h: Ditto. * remote-fileio.c: Ditto. * remote.c: Ditto. * ser-mingw.c: Ditto. * ser-tcp.c: Ditto. * ser-unix.c: Ditto. * serial.c: Ditto. * serial.h: Ditto. * solib-frv.c: Ditto. * solib-irix.c: Ditto. * solib-osf.c: Ditto. * solib-pa64.c: Ditto. * solib-som.c: Ditto. * solib-sunos.c: Ditto. * solib-svr4.c: Ditto. * solib-target.c: Ditto. * solib.c: Ditto. * somread.c: Ditto. * source.c: Ditto. * stabsread.c: Ditto. * stabsread.c: Ditto. * stack.c: Ditto. * stack.h: Ditto. * symfile-mem.c: Ditto. * symfile.c: Ditto. * symfile.h: Ditto. * symmisc.c: Ditto. * symtab.c: Ditto. * symtab.h: Ditto. * target-descriptions.c: Ditto. * target-memory.c: Ditto. * target.c: Ditto. * target.h: Ditto. * terminal.h: Ditto. * thread.c: Ditto. * top.c: Ditto. * tracepoint.c: Ditto. * tracepoint.h: Ditto. * ui-file.c: Ditto. * ui-file.h: Ditto. * ui-out.h: Ditto. * user-regs.c: Ditto. * user-regs.h: Ditto. * utils.c: Ditto. * valarith.c: Ditto. * valops.c: Ditto. * valprint.c: Ditto. * valprint.h: Ditto. * value.c: Ditto. * varobj.c: Ditto. * varobj.h: Ditto. * vec.h: Ditto. * xcoffread.c: Ditto. * xcoffsolib.c: Ditto. * xcoffsolib.h: Ditto. * xml-syscall.c: Ditto. * xml-tdesc.c: Ditto.
2011-01-05 23:22:53 +01:00
#define FRAME_OBSTACK_ZALLOC(TYPE) \
((TYPE *) frame_obstack_zalloc (sizeof (TYPE)))
#define FRAME_OBSTACK_CALLOC(NUMBER,TYPE) \
((TYPE *) frame_obstack_zalloc ((NUMBER) * sizeof (TYPE)))
/* Create a regcache, and copy the frame's registers into it. */
struct regcache *frame_save_as_regcache (struct frame_info *this_frame);
extern struct block *get_frame_block (struct frame_info *,
CORE_ADDR *addr_in_block);
/* Return the `struct block' that belongs to the selected thread's
selected frame. If the inferior has no state, return NULL.
NOTE: cagney/2002-11-29:
No state? Does the inferior have any execution state (a core file
does, an executable does not). At present the code tests
`target_has_stack' but I'm left wondering if it should test
`target_has_registers' or, even, a merged target_has_state.
Should it look at the most recently specified SAL? If the target
has no state, should this function try to extract a block from the
most recently selected SAL? That way `list foo' would give it some
sort of reference point. Then again, perhaps that would confuse
things.
Calls to this function can be broken down into two categories: Code
that uses the selected block as an additional, but optional, data
point; Code that uses the selected block as a prop, when it should
have the relevant frame/block/pc explicitly passed in.
The latter can be eliminated by correctly parameterizing the code,
the former though is more interesting. Per the "address" command,
it occurs in the CLI code and makes it possible for commands to
work, even when the inferior has no state. */
extern struct block *get_selected_block (CORE_ADDR *addr_in_block);
2000-05-28 03:12:42 +02:00
extern struct symbol *get_frame_function (struct frame_info *);
2000-05-28 03:12:42 +02:00
extern CORE_ADDR get_pc_function_start (CORE_ADDR);
2000-05-28 03:12:42 +02:00
extern struct frame_info *find_relative_frame (struct frame_info *, int *);
extern void print_stack_frame (struct frame_info *, int print_level,
PR gdb/15911: "info threads" changes the default source and line (for "break", "list") "info threads" changes the default source for "break" and "list", to whatever the location of the first/bottom thread in the thread list is... (gdb) b start (gdb) c ... (gdb) list *lists "start"* (gdb) b 23 Breakpoint 3 at 0x400614: file test.c, line 23. (gdb) info threads Id Target Id Frame * 2 Thread 0x7ffff7fcb700 (LWP 1760) "test" start (arg=0x0) at test.c:23 1 Thread 0x7ffff7fcc740 (LWP 1748) "test" 0x000000323dc08e60 in pthread_join (threadid=140737353922304, thread_return=0x0) at pthread_join.c:93 (gdb) b 23 Breakpoint 4 at 0x323dc08d90: file pthread_join.c, line 23. ^^^^^^^^^^^^^^^ (gdb) list 93 lll_wait_tid (pd->tid); 94 95 96 /* Restore cancellation mode. */ 97 CANCEL_RESET (oldtype); 98 99 /* Remove the handler. */ 100 pthread_cleanup_pop (0); 101 102 The issue is that print_stack_frame always sets the current sal to the frame's sal. print_frame_info (which print_stack_frame calls to do most of the work) also sets the last displayed sal, but only if print_what isn't LOCATION. Now the call in question, from within thread.c:print_thread_info, does pass in LOCATION as print_what, but print_stack_frame doesn't have the same check print_frame_info has. We could consider adding it, but setting these globals depending on print_what isn't very clean, IMO. What we have is two logically distinct operations mixed in the same function(s): #1 - print frame, in the format specified by {print_what, print_level and print_args}. #2 - We're displaying a frame to the user, and I want the default sal to point here, because the program stopped here, or the user did some context-changing command (up, down, etc.). So I added a new parameter to print_stack_frame & friends for point #2, and went through all calls in the tree adjusting as necessary. Tested on x86_64 Fedora 17. gdb/ 2013-09-17 Pedro Alves <palves@redhat.com> PR gdb/15911 * ada-tasks.c (task_command_1): Adjust call to print_stack_frame. * bsd-kvm.c (bsd_kvm_open, bsd_kvm_proc_cmd, bsd_kvm_pcb_cmd): * corelow.c (core_open): * frame.h (print_stack_frame, print_frame_info): New 'set_current_sal' parameter. * infcmd.c (finish_command, kill_command): Adjust call to print_stack_frame. * inferior.c (inferior_command): Likewise. * infrun.c (normal_stop): Likewise. * linux-fork.c (linux_fork_context): Likewise. * record-full.c (record_full_goto_entry, record_full_restore): Likewise. * remote-mips.c (common_open): Likewise. * stack.c (print_stack_frame): New 'set_current_sal' parameter. Use it. (print_frame_info): New 'set_current_sal' parameter. Set the last displayed sal depending on the new paremeter instead of looking at print_what. (backtrace_command_1, select_and_print_frame, frame_command) (current_frame_command, up_command, down_command): Adjust call to print_stack_frame. * thread.c (print_thread_info, restore_selected_frame) (do_captured_thread_select): Adjust call to print_stack_frame. * tracepoint.c (tfind_1): Likewise. * mi/mi-cmd-stack.c (mi_cmd_stack_list_frames) (mi_cmd_stack_info_frame): Likewise. * mi/mi-interp.c (mi_on_normal_stop): Likewise. * mi/mi-main.c (mi_cmd_exec_return, mi_cmd_trace_find): Likewise. gdb/testsuite/ * gdb.threads/info-threads-cur-sal-2.c: New file. * gdb.threads/info-threads-cur-sal.c: New file. * gdb.threads/info-threads-cur-sal.exp: New file.
2013-09-17 20:26:41 +02:00
enum print_what print_what,
int set_current_sal);
extern void print_frame_info (struct frame_info *, int print_level,
PR gdb/15911: "info threads" changes the default source and line (for "break", "list") "info threads" changes the default source for "break" and "list", to whatever the location of the first/bottom thread in the thread list is... (gdb) b start (gdb) c ... (gdb) list *lists "start"* (gdb) b 23 Breakpoint 3 at 0x400614: file test.c, line 23. (gdb) info threads Id Target Id Frame * 2 Thread 0x7ffff7fcb700 (LWP 1760) "test" start (arg=0x0) at test.c:23 1 Thread 0x7ffff7fcc740 (LWP 1748) "test" 0x000000323dc08e60 in pthread_join (threadid=140737353922304, thread_return=0x0) at pthread_join.c:93 (gdb) b 23 Breakpoint 4 at 0x323dc08d90: file pthread_join.c, line 23. ^^^^^^^^^^^^^^^ (gdb) list 93 lll_wait_tid (pd->tid); 94 95 96 /* Restore cancellation mode. */ 97 CANCEL_RESET (oldtype); 98 99 /* Remove the handler. */ 100 pthread_cleanup_pop (0); 101 102 The issue is that print_stack_frame always sets the current sal to the frame's sal. print_frame_info (which print_stack_frame calls to do most of the work) also sets the last displayed sal, but only if print_what isn't LOCATION. Now the call in question, from within thread.c:print_thread_info, does pass in LOCATION as print_what, but print_stack_frame doesn't have the same check print_frame_info has. We could consider adding it, but setting these globals depending on print_what isn't very clean, IMO. What we have is two logically distinct operations mixed in the same function(s): #1 - print frame, in the format specified by {print_what, print_level and print_args}. #2 - We're displaying a frame to the user, and I want the default sal to point here, because the program stopped here, or the user did some context-changing command (up, down, etc.). So I added a new parameter to print_stack_frame & friends for point #2, and went through all calls in the tree adjusting as necessary. Tested on x86_64 Fedora 17. gdb/ 2013-09-17 Pedro Alves <palves@redhat.com> PR gdb/15911 * ada-tasks.c (task_command_1): Adjust call to print_stack_frame. * bsd-kvm.c (bsd_kvm_open, bsd_kvm_proc_cmd, bsd_kvm_pcb_cmd): * corelow.c (core_open): * frame.h (print_stack_frame, print_frame_info): New 'set_current_sal' parameter. * infcmd.c (finish_command, kill_command): Adjust call to print_stack_frame. * inferior.c (inferior_command): Likewise. * infrun.c (normal_stop): Likewise. * linux-fork.c (linux_fork_context): Likewise. * record-full.c (record_full_goto_entry, record_full_restore): Likewise. * remote-mips.c (common_open): Likewise. * stack.c (print_stack_frame): New 'set_current_sal' parameter. Use it. (print_frame_info): New 'set_current_sal' parameter. Set the last displayed sal depending on the new paremeter instead of looking at print_what. (backtrace_command_1, select_and_print_frame, frame_command) (current_frame_command, up_command, down_command): Adjust call to print_stack_frame. * thread.c (print_thread_info, restore_selected_frame) (do_captured_thread_select): Adjust call to print_stack_frame. * tracepoint.c (tfind_1): Likewise. * mi/mi-cmd-stack.c (mi_cmd_stack_list_frames) (mi_cmd_stack_info_frame): Likewise. * mi/mi-interp.c (mi_on_normal_stop): Likewise. * mi/mi-main.c (mi_cmd_exec_return, mi_cmd_trace_find): Likewise. gdb/testsuite/ * gdb.threads/info-threads-cur-sal-2.c: New file. * gdb.threads/info-threads-cur-sal.c: New file. * gdb.threads/info-threads-cur-sal.exp: New file.
2013-09-17 20:26:41 +02:00
enum print_what print_what, int args,
int set_current_sal);
extern struct frame_info *block_innermost_frame (const struct block *);
extern int deprecated_frame_register_read (struct frame_info *frame, int regnum,
gdb_byte *buf);
/* From stack.c. */
gdb/ Display @entry parameter values (without references). * dwarf2expr.c (dwarf_block_to_fb_offset, dwarf_block_to_sp_offset): New functions. * dwarf2expr.h (dwarf_block_to_fb_offset, dwarf_block_to_sp_offset): New declarations. * dwarf2loc.c (dwarf2_find_location_expression): Support location list entry record. (dwarf_entry_parameter_to_value, value_of_dwarf_reg_entry) (value_of_dwarf_block_entry, locexpr_read_variable_at_entry): New functions. (dwarf2_locexpr_funcs): Install locexpr_read_variable_at_entry. (loclist_read_variable_at_entry): New function. (dwarf2_loclist_funcs): Install loclist_read_variable_at_entry. * dwarf2read.c (read_call_site_scope): Support also DW_OP_fbreg in DW_AT_location, call dwarf_block_to_sp_offset for it. * frame.h (print_entry_values_no, print_entry_values_only) (print_entry_values_preferred, print_entry_values_if_needed) (print_entry_values_both, print_entry_values_compact) (print_entry_values_default, print_entry_values): New declarations. (struct frame_arg): New field entry_kind. (read_frame_arg): New parameter entryargp. * mi/mi-cmd-stack.c (list_arg_or_local): New gdb_assert for arg->entry_kind. Optionally print the `@entry' suffix. (list_args_or_locals): New variable entryarg, initialize it. Initialize also entry_kind of arg and entryarg. Conditionalize list_arg_or_local for arg, add list_arg_or_local for entryarg. Call xfree for entryarg.error. * stack.c (print_entry_values_no, print_entry_values_only) (print_entry_values_preferred, print_entry_values_if_needed) (print_entry_values_both, print_entry_values_compact) (print_entry_values_default, print_entry_values_choices) (print_entry_values): New variables. (print_frame_arg): New gdb_assert for arg->entry_kind. Optionally print the `@entry' suffix, possibly in combination for print_entry_values_compact. (read_frame_arg): New parameter entryargp, new variables entryval, entryval_error and val_equal. Read in also entryargp, respect print_entry_values, compare the values using val_equal, fill in also argp->entry_kind (together with entryargp->entry_kind). (print_frame_args): New variable entryarg, initialize it. Conditionalize print_frame_arg for arg, add print_frame_arg for entryarg. Call xfree for entryarg.error. (_initialize_stack): Call add_setshow_enum_cmd for `entry-values'. * symtab.h (struct symbol_computed_ops): New field read_variable_at_entry. gdb/doc/ Display @entry parameter values (without references). * gdb.texinfo (Tail Call Frames): Add anchor. Add self tail call example. (Print Settings): New description of set print entry-values and show print entry-values. gdb/testsuite/ Display @entry parameter values (without references). * gdb.arch/amd64-entry-value.cc (locexpr, stacktest, data, data2) (different, validity, invalid): New functions. (main): Call them. * gdb.arch/amd64-entry-value.exp: New breakpoints breakhere_locexpr, stacktest, breakhere_stacktest, different, breakhere_different, breakhere_validity and breakhere_invalid. (entry: bt): Update for @entry. (entry_locexpr: *, entry_stack: *, entry_equal: *, entry_different: *) (entry_validity: *, entry_invalid: *): Many new tests. * gdb.base/break.exp (run until breakpoint set at small function, optimized file): Accept also the @entry suffix. * gdb.mi/Makefile.in (PROGS): Add mi2-amd64-entry-value. * gdb.mi/mi2-amd64-entry-value.c: New files. * gdb.mi/mi2-amd64-entry-value.exp: New files.
2011-10-09 21:34:19 +02:00
extern const char print_entry_values_no[];
extern const char print_entry_values_only[];
extern const char print_entry_values_preferred[];
extern const char print_entry_values_if_needed[];
extern const char print_entry_values_both[];
extern const char print_entry_values_compact[];
extern const char print_entry_values_default[];
extern const char *print_entry_values;
/* Inferior function parameter value read in from a frame. */
struct frame_arg
{
/* Symbol for this parameter used for example for its name. */
struct symbol *sym;
/* Value of the parameter. It is NULL if ERROR is not NULL; if both VAL and
ERROR are NULL this parameter's value should not be printed. */
struct value *val;
/* String containing the error message, it is more usually NULL indicating no
error occured reading this parameter. */
char *error;
gdb/ Display @entry parameter values (without references). * dwarf2expr.c (dwarf_block_to_fb_offset, dwarf_block_to_sp_offset): New functions. * dwarf2expr.h (dwarf_block_to_fb_offset, dwarf_block_to_sp_offset): New declarations. * dwarf2loc.c (dwarf2_find_location_expression): Support location list entry record. (dwarf_entry_parameter_to_value, value_of_dwarf_reg_entry) (value_of_dwarf_block_entry, locexpr_read_variable_at_entry): New functions. (dwarf2_locexpr_funcs): Install locexpr_read_variable_at_entry. (loclist_read_variable_at_entry): New function. (dwarf2_loclist_funcs): Install loclist_read_variable_at_entry. * dwarf2read.c (read_call_site_scope): Support also DW_OP_fbreg in DW_AT_location, call dwarf_block_to_sp_offset for it. * frame.h (print_entry_values_no, print_entry_values_only) (print_entry_values_preferred, print_entry_values_if_needed) (print_entry_values_both, print_entry_values_compact) (print_entry_values_default, print_entry_values): New declarations. (struct frame_arg): New field entry_kind. (read_frame_arg): New parameter entryargp. * mi/mi-cmd-stack.c (list_arg_or_local): New gdb_assert for arg->entry_kind. Optionally print the `@entry' suffix. (list_args_or_locals): New variable entryarg, initialize it. Initialize also entry_kind of arg and entryarg. Conditionalize list_arg_or_local for arg, add list_arg_or_local for entryarg. Call xfree for entryarg.error. * stack.c (print_entry_values_no, print_entry_values_only) (print_entry_values_preferred, print_entry_values_if_needed) (print_entry_values_both, print_entry_values_compact) (print_entry_values_default, print_entry_values_choices) (print_entry_values): New variables. (print_frame_arg): New gdb_assert for arg->entry_kind. Optionally print the `@entry' suffix, possibly in combination for print_entry_values_compact. (read_frame_arg): New parameter entryargp, new variables entryval, entryval_error and val_equal. Read in also entryargp, respect print_entry_values, compare the values using val_equal, fill in also argp->entry_kind (together with entryargp->entry_kind). (print_frame_args): New variable entryarg, initialize it. Conditionalize print_frame_arg for arg, add print_frame_arg for entryarg. Call xfree for entryarg.error. (_initialize_stack): Call add_setshow_enum_cmd for `entry-values'. * symtab.h (struct symbol_computed_ops): New field read_variable_at_entry. gdb/doc/ Display @entry parameter values (without references). * gdb.texinfo (Tail Call Frames): Add anchor. Add self tail call example. (Print Settings): New description of set print entry-values and show print entry-values. gdb/testsuite/ Display @entry parameter values (without references). * gdb.arch/amd64-entry-value.cc (locexpr, stacktest, data, data2) (different, validity, invalid): New functions. (main): Call them. * gdb.arch/amd64-entry-value.exp: New breakpoints breakhere_locexpr, stacktest, breakhere_stacktest, different, breakhere_different, breakhere_validity and breakhere_invalid. (entry: bt): Update for @entry. (entry_locexpr: *, entry_stack: *, entry_equal: *, entry_different: *) (entry_validity: *, entry_invalid: *): Many new tests. * gdb.base/break.exp (run until breakpoint set at small function, optimized file): Accept also the @entry suffix. * gdb.mi/Makefile.in (PROGS): Add mi2-amd64-entry-value. * gdb.mi/mi2-amd64-entry-value.c: New files. * gdb.mi/mi2-amd64-entry-value.exp: New files.
2011-10-09 21:34:19 +02:00
/* One of the print_entry_values_* entries as appropriate specifically for
this frame_arg. It will be different from print_entry_values. With
print_entry_values_no this frame_arg should be printed as a normal
parameter. print_entry_values_only says it should be printed as entry
value parameter. print_entry_values_compact says it should be printed as
both as a normal parameter and entry values parameter having the same
value - print_entry_values_compact is not permitted fi ui_out_is_mi_like_p
(in such case print_entry_values_no and print_entry_values_only is used
for each parameter kind specifically. */
const char *entry_kind;
};
extern void read_frame_arg (struct symbol *sym, struct frame_info *frame,
gdb/ Display @entry parameter values (without references). * dwarf2expr.c (dwarf_block_to_fb_offset, dwarf_block_to_sp_offset): New functions. * dwarf2expr.h (dwarf_block_to_fb_offset, dwarf_block_to_sp_offset): New declarations. * dwarf2loc.c (dwarf2_find_location_expression): Support location list entry record. (dwarf_entry_parameter_to_value, value_of_dwarf_reg_entry) (value_of_dwarf_block_entry, locexpr_read_variable_at_entry): New functions. (dwarf2_locexpr_funcs): Install locexpr_read_variable_at_entry. (loclist_read_variable_at_entry): New function. (dwarf2_loclist_funcs): Install loclist_read_variable_at_entry. * dwarf2read.c (read_call_site_scope): Support also DW_OP_fbreg in DW_AT_location, call dwarf_block_to_sp_offset for it. * frame.h (print_entry_values_no, print_entry_values_only) (print_entry_values_preferred, print_entry_values_if_needed) (print_entry_values_both, print_entry_values_compact) (print_entry_values_default, print_entry_values): New declarations. (struct frame_arg): New field entry_kind. (read_frame_arg): New parameter entryargp. * mi/mi-cmd-stack.c (list_arg_or_local): New gdb_assert for arg->entry_kind. Optionally print the `@entry' suffix. (list_args_or_locals): New variable entryarg, initialize it. Initialize also entry_kind of arg and entryarg. Conditionalize list_arg_or_local for arg, add list_arg_or_local for entryarg. Call xfree for entryarg.error. * stack.c (print_entry_values_no, print_entry_values_only) (print_entry_values_preferred, print_entry_values_if_needed) (print_entry_values_both, print_entry_values_compact) (print_entry_values_default, print_entry_values_choices) (print_entry_values): New variables. (print_frame_arg): New gdb_assert for arg->entry_kind. Optionally print the `@entry' suffix, possibly in combination for print_entry_values_compact. (read_frame_arg): New parameter entryargp, new variables entryval, entryval_error and val_equal. Read in also entryargp, respect print_entry_values, compare the values using val_equal, fill in also argp->entry_kind (together with entryargp->entry_kind). (print_frame_args): New variable entryarg, initialize it. Conditionalize print_frame_arg for arg, add print_frame_arg for entryarg. Call xfree for entryarg.error. (_initialize_stack): Call add_setshow_enum_cmd for `entry-values'. * symtab.h (struct symbol_computed_ops): New field read_variable_at_entry. gdb/doc/ Display @entry parameter values (without references). * gdb.texinfo (Tail Call Frames): Add anchor. Add self tail call example. (Print Settings): New description of set print entry-values and show print entry-values. gdb/testsuite/ Display @entry parameter values (without references). * gdb.arch/amd64-entry-value.cc (locexpr, stacktest, data, data2) (different, validity, invalid): New functions. (main): Call them. * gdb.arch/amd64-entry-value.exp: New breakpoints breakhere_locexpr, stacktest, breakhere_stacktest, different, breakhere_different, breakhere_validity and breakhere_invalid. (entry: bt): Update for @entry. (entry_locexpr: *, entry_stack: *, entry_equal: *, entry_different: *) (entry_validity: *, entry_invalid: *): Many new tests. * gdb.base/break.exp (run until breakpoint set at small function, optimized file): Accept also the @entry suffix. * gdb.mi/Makefile.in (PROGS): Add mi2-amd64-entry-value. * gdb.mi/mi2-amd64-entry-value.c: New files. * gdb.mi/mi2-amd64-entry-value.exp: New files.
2011-10-09 21:34:19 +02:00
struct frame_arg *argp,
struct frame_arg *entryargp);
extern void read_frame_local (struct symbol *sym, struct frame_info *frame,
struct frame_arg *argp);
extern void args_info (char *, int);
extern void locals_info (char *, int);
2004-04-21 Andrew Cagney <cagney@redhat.com> * annotate.h (deprecated_annotate_starting_hook) (deprecated_annotate_stopped_hook) (deprecated_annotate_exited_hook) (deprecated_annotate_signal_hook) (deprecated_annotate_signalled_hook): Deprecate. * tracepoint.h (deprecated_create_tracepoint_hook) (deprecated_delete_tracepoint_hook) (deprecated_modify_tracepoint_hook) (deprecated_trace_find_hook) (deprecated_trace_start_stop_hook): Deprecate. * target.h (deprecated_target_new_objfile_hook): Deprecate. * remote.h (deprecated_target_resume_hook) (deprecated_target_wait_loop_hook): Deprecate. * gdbcore.h (deprecated_exec_file_display_hook) (deprecated_file_changed_hook): Deprecate. * frame.h (deprecated_selected_frame_level_changed_hook): Deprecate. * defs.h (deprecated_modify_breakpoint_hook) (deprecated_command_loop_hook, deprecated_show_load_progress) (deprecated_print_frame_info_listing_hook) (deprecated_query_hook, deprecated_warning_hook) (deprecated_flush_hook, deprecated_create_breakpoint_hook) (deprecated_delete_breakpoint_hook) (deprecated_interactive_hook, deprecated_registers_changed_hook) (deprecated_readline_begin_hook, deprecated_readline_hook) (deprecated_readline_end_hook, deprecated_register_changed_hook) (deprecated_memory_changed_hook, deprecated_init_ui_hook) (deprecated_context_hook, deprecated_target_wait_hook) (deprecated_attach_hook, deprecated_detach_hook) (deprecated_call_command_hook, deprecated_set_hook) (deprecated_error_hook, deprecated_error_begin_hook) (deprecated_ui_load_progress_hook): Deprecate. * valops.c, uw-thread.c, utils.c, tui/tui-io.c: Update. * tui/tui-hooks.c, tracepoint.c, top.c, thread-db.c: Update. * target.c, symfile.c, stack.c, sol-thread.c, rs6000-nat.c: Update. * remote.c, remote-mips.c, regcache.c, mi/mi-interp.c: Update. * main.c, interps.c, infcmd.c, hpux-thread.c, frame.c: Update. * exec.c, dsrec.c, d10v-tdep.c, corefile.c, complaints.c: Update. * cli/cli-script.c, cli/cli-setshow.c, breakpoint.c: Update. * annotate.c, aix-thread.c: Update.
2004-04-22 01:52:21 +02:00
extern void (*deprecated_selected_frame_level_changed_hook) (int);
extern void return_command (char *, int);
Convert frame unwinders to use the current frame and "struct value". * frame.c (frame_debug): Make global. (get_frame_id): Pass this frame to unwinder routines. (frame_pc_unwind): Remove unused unwind->prev_pc support. (do_frame_register_read): Do not discard the return value of frame_register_read. (frame_register_unwind): Remove debug messages. Use frame_unwind_register_value. (frame_unwind_register_value, get_frame_register_value): New functions. (create_new_frame, get_frame_base_address, get_frame_locals_address) (get_frame_args_address, get_frame_type): Pass this frame to unwinder routines. (frame_cleanup_after_sniffer, frame_prepare_for_sniffer): New functions. * frame.h: Update comments. (frame_debug, frame_unwind_register_value, get_frame_register_value) (frame_prepare_for_sniffer): Declare. * frame-unwind.h: Update comments and parameter names. (default_frame_sniffer): Declare. (frame_prev_register_ftype): Return a struct value *. (struct frame_unwind): Remove prev_pc member. (frame_unwind_sniffer_ftype, frame_unwind_append_sniffer): Delete. (frame_unwind_append_unwinder, frame_unwind_got_optimized) (frame_unwind_got_register, frame_unwind_got_memory) (frame_unwind_got_constant, frame_unwind_got_address): Declare. * frame-base.h: Update comments and parameter names. * valops.c (value_fetch_lazy): Use get_frame_register_value. Iterate if necessary. Add debugging output. * sentinel-frame.c (sentinel_frame_prev_register) (sentinel_frame_this_id): Update for new signature. (sentinel_frame_prev_pc): Delete. (sentinel_frame_unwinder): Remove prev_pc. * ia64-tdep.c (ia64_libunwind_frame_unwind): Do not initialize prev_pc. * libunwind-frame.c (libunwind_frame_unwind): Likewise. * frame-unwind.c (struct frame_unwind_table_entry): Remove sniffer. (frame_unwind_append_sniffer): Delete. (frame_unwind_append_unwinder): New function. (frame_unwind_find_by_frame): Take this frame. Only use sniffers from unwinders. Use frame_prepare_for_sniffer. (default_frame_sniffer, frame_unwind_got_optimized) (frame_unwind_got_register, frame_unwind_got_memory) (frame_unwind_got_constant, frame_unwind_got_address): New functions. * dummy-frame.c (dummy_frame_sniffer): Use gdbarch_dummy_id. (dummy_frame_prev_register, dummy_frame_this_id): Update for new signature. * gdbarch.sh: Replace unwind_dummy_id with dummy_id. * gdbarch.c, gdbarch.c: Regenerated. * frame-base.c (default_frame_base_address) (default_frame_locals_address, default_frame_args_address): Update for new signature. (frame_base_find_by_frame): Pass this frame to unwinder routines. * infcall.c (call_function_by_hand): Update comments. * Makefile.in (frame-unwind.o): Update dependencies. * gdbint.texinfo (Stack Frames): New chapter. (Algorithms): Move Frames text to the new chapter. (Target Conditionals): Delete SAVE_DUMMY_FRAME_TOS. Document gdbarch_dummy_id instead of gdbarch_unwind_dummy_id.
2008-04-30 23:16:46 +02:00
/* Set FRAME's unwinder temporarily, so that we can call a sniffer.
Return a cleanup which should be called if unwinding fails, and
discarded if it succeeds. */
struct cleanup *frame_prepare_for_sniffer (struct frame_info *frame,
const struct frame_unwind *unwind);
/* Notes (cagney/2002-11-27, drow/2003-09-06):
You might think that calls to this function can simply be replaced by a
call to get_selected_frame().
Unfortunately, it isn't that easy.
The relevant code needs to be audited to determine if it is
possible (or practical) to instead pass the applicable frame in as a
parameter. For instance, DEPRECATED_DO_REGISTERS_INFO() relied on
the deprecated_selected_frame global, while its replacement,
PRINT_REGISTERS_INFO(), is parameterized with the selected frame.
The only real exceptions occur at the edge (in the CLI code) where
user commands need to pick up the selected frame before proceeding.
There are also some functions called with a NULL frame meaning either "the
program is not running" or "use the selected frame".
This is important. GDB is trying to stamp out the hack:
saved_frame = deprecated_safe_get_selected_frame ();
select_frame (...);
hack_using_global_selected_frame ();
select_frame (saved_frame);
Take care!
This function calls get_selected_frame if the inferior should have a
frame, or returns NULL otherwise. */
extern struct frame_info *deprecated_safe_get_selected_frame (void);
/* Create a frame using the specified BASE and PC. */
extern struct frame_info *create_new_frame (CORE_ADDR base, CORE_ADDR pc);
/* Return true if the frame unwinder for frame FI is UNWINDER; false
otherwise. */
extern int frame_unwinder_is (struct frame_info *fi,
const struct frame_unwind *unwinder);
#endif /* !defined (FRAME_H) */