From 54af988d1e631ef9f44c83cc23cbc33bdcf12cf5 Mon Sep 17 00:00:00 2001 From: Daniel Jacobowitz Date: Tue, 15 Jul 2008 18:58:32 +0000 Subject: [PATCH] * frame.c (frame_unwind_id): Renamed to ... (frame_unwind_caller_id): ... this. All callers updated. (frame_pc_unwind): Renamed to ... (frame_unwind_caller_pc): ... this. All callers updated. * frame.h: Document frame_unwind_caller_WHAT functions. (frame_unwind_id): Renamed to ... (frame_unwind_caller_id): ... this. (frame_pc_unwind): Renamed to ... (frame_unwind_caller_pc): ... this. * hppa-tdep.c (hppa_find_unwind_entry_in_block): Correct comment. * stack.c (parse_frame_specification_1): Do not rely on frame_unwind_id. --- gdb/ChangeLog | 15 +++++++++++++++ gdb/frame.c | 8 ++++---- gdb/frame.h | 9 +++++++-- gdb/glibc-tdep.c | 2 +- gdb/hppa-tdep.c | 2 +- gdb/infrun.c | 14 ++++++++------ gdb/mips-linux-tdep.c | 2 +- gdb/obsd-tdep.c | 2 +- gdb/sol2-tdep.c | 2 +- gdb/stack.c | 14 +++++++++++--- 10 files changed, 50 insertions(+), 20 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 21ae335..5c43fb6 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,20 @@ 2008-07-15 Daniel Jacobowitz + * frame.c (frame_unwind_id): Renamed to ... + (frame_unwind_caller_id): ... this. All callers updated. + (frame_pc_unwind): Renamed to ... + (frame_unwind_caller_pc): ... this. All callers updated. + * frame.h: Document frame_unwind_caller_WHAT functions. + (frame_unwind_id): Renamed to ... + (frame_unwind_caller_id): ... this. + (frame_pc_unwind): Renamed to ... + (frame_unwind_caller_pc): ... this. + * hppa-tdep.c (hppa_find_unwind_entry_in_block): Correct comment. + * stack.c (parse_frame_specification_1): Do not rely on + frame_unwind_id. + +2008-07-15 Daniel Jacobowitz + * mn10300-tdep.c (set_reg_offsets): Use get_frame_register_unsigned. 2008-07-15 Daniel Jacobowitz diff --git a/gdb/frame.c b/gdb/frame.c index f5e0fad..5900e22 100644 --- a/gdb/frame.c +++ b/gdb/frame.c @@ -271,7 +271,7 @@ get_frame_id (struct frame_info *fi) } struct frame_id -frame_unwind_id (struct frame_info *next_frame) +frame_unwind_caller_id (struct frame_info *next_frame) { /* Use prev_frame, and not get_prev_frame. The latter will truncate the frame chain, leading to this function unintentionally @@ -422,7 +422,7 @@ frame_find_by_id (struct frame_id id) } CORE_ADDR -frame_pc_unwind (struct frame_info *this_frame) +frame_unwind_caller_pc (struct frame_info *this_frame) { if (!this_frame->prev_pc.p) { @@ -453,7 +453,7 @@ frame_pc_unwind (struct frame_info *this_frame) this_frame->prev_pc.p = 1; if (frame_debug) fprintf_unfiltered (gdb_stdlog, - "{ frame_pc_unwind (this_frame=%d) -> 0x%s }\n", + "{ frame_unwind_caller_pc (this_frame=%d) -> 0x%s }\n", this_frame->level, paddr_nz (this_frame->prev_pc.value)); } @@ -1533,7 +1533,7 @@ CORE_ADDR get_frame_pc (struct frame_info *frame) { gdb_assert (frame->next != NULL); - return frame_pc_unwind (frame->next); + return frame_unwind_caller_pc (frame->next); } /* Return an address that falls within THIS_FRAME's code block. */ diff --git a/gdb/frame.h b/gdb/frame.h index 3e8f023..b7ccd30 100644 --- a/gdb/frame.h +++ b/gdb/frame.h @@ -34,6 +34,11 @@ 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. + 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) @@ -361,7 +366,7 @@ extern CORE_ADDR get_frame_base (struct frame_info *); instead, since that avoids the bug. */ extern struct frame_id get_frame_id (struct frame_info *fi); -extern struct frame_id frame_unwind_id (struct frame_info *next_frame); +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 @@ -515,7 +520,7 @@ extern const char *frame_map_regnum_to_name (struct frame_info *frame, calling frame. For GDB, `pc' is the resume address and not a specific register. */ -extern CORE_ADDR frame_pc_unwind (struct frame_info *frame); +extern CORE_ADDR frame_unwind_caller_pc (struct frame_info *frame); /* Discard the specified frame. Restoring the registers to the state of the caller. */ diff --git a/gdb/glibc-tdep.c b/gdb/glibc-tdep.c index 0ae303b..86046a0 100644 --- a/gdb/glibc-tdep.c +++ b/gdb/glibc-tdep.c @@ -97,7 +97,7 @@ glibc_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc) fixup = lookup_minimal_symbol ("fixup", NULL, objfile); if (fixup && SYMBOL_VALUE_ADDRESS (fixup) == pc) - return frame_pc_unwind (get_current_frame ()); + return frame_unwind_caller_pc (get_current_frame ()); } return 0; diff --git a/gdb/hppa-tdep.c b/gdb/hppa-tdep.c index ace04a3..17a0909 100644 --- a/gdb/hppa-tdep.c +++ b/gdb/hppa-tdep.c @@ -1794,7 +1794,7 @@ hppa_find_unwind_entry_in_block (struct frame_info *this_frame) /* FIXME drow/20070101: Calling gdbarch_addr_bits_remove on the result of get_frame_address_in_block implies a problem. The bits should have been removed earlier, before the return - value of frame_pc_unwind. That might be happening already; + value of gdbarch_unwind_pc. That might be happening already; if it isn't, it should be fixed. Then this call can be removed. */ pc = gdbarch_addr_bits_remove (get_frame_arch (this_frame), pc); diff --git a/gdb/infrun.c b/gdb/infrun.c index 2f32a82..f7ce888 100644 --- a/gdb/infrun.c +++ b/gdb/infrun.c @@ -3067,7 +3067,8 @@ infrun: BPSTAT_WHAT_SET_LONGJMP_RESUME (!gdbarch_get_longjmp_target)\n"); being equal, so to get into this block, both the current and previous frame must have valid frame IDs. */ if (!frame_id_eq (get_frame_id (get_current_frame ()), step_frame_id) - && frame_id_eq (frame_unwind_id (get_current_frame ()), step_frame_id)) + && frame_id_eq (frame_unwind_caller_id (get_current_frame ()), + step_frame_id)) { CORE_ADDR real_stop_pc; @@ -3220,7 +3221,7 @@ infrun: BPSTAT_WHAT_SET_LONGJMP_RESUME (!gdbarch_get_longjmp_target)\n"); set step-mode) or we no longer know how to get back to the call site. */ if (step_stop_if_no_debug - || !frame_id_p (frame_unwind_id (get_current_frame ()))) + || !frame_id_p (frame_unwind_caller_id (get_current_frame ()))) { /* If we have no line number and the step-stop-if-no-debug is set, we stop the step so that the user has a chance to @@ -3469,7 +3470,7 @@ insert_step_resume_breakpoint_at_frame (struct frame_info *return_frame) This is a separate function rather than reusing insert_step_resume_breakpoint_at_frame in order to avoid get_prev_frame, which may stop prematurely (see the implementation - of frame_unwind_id for an example). */ + of frame_unwind_caller_id for an example). */ static void insert_step_resume_breakpoint_at_caller (struct frame_info *next_frame) @@ -3478,15 +3479,16 @@ insert_step_resume_breakpoint_at_caller (struct frame_info *next_frame) /* We shouldn't have gotten here if we don't know where the call site is. */ - gdb_assert (frame_id_p (frame_unwind_id (next_frame))); + gdb_assert (frame_id_p (frame_unwind_caller_id (next_frame))); init_sal (&sr_sal); /* initialize to zeros */ sr_sal.pc = gdbarch_addr_bits_remove - (current_gdbarch, frame_pc_unwind (next_frame)); + (current_gdbarch, frame_unwind_caller_pc (next_frame)); sr_sal.section = find_pc_overlay (sr_sal.pc); - insert_step_resume_breakpoint_at_sal (sr_sal, frame_unwind_id (next_frame)); + insert_step_resume_breakpoint_at_sal (sr_sal, + frame_unwind_caller_id (next_frame)); } /* Insert a "longjmp-resume" breakpoint at PC. This is used to set a diff --git a/gdb/mips-linux-tdep.c b/gdb/mips-linux-tdep.c index d631a7b..af643ac 100644 --- a/gdb/mips-linux-tdep.c +++ b/gdb/mips-linux-tdep.c @@ -701,7 +701,7 @@ mips_linux_skip_resolver (struct gdbarch *gdbarch, CORE_ADDR pc) resolver = lookup_minimal_symbol ("__dl_runtime_resolve", NULL, NULL); if (resolver && SYMBOL_VALUE_ADDRESS (resolver) == pc) - return frame_pc_unwind (get_current_frame ()); + return frame_unwind_caller_pc (get_current_frame ()); return 0; } diff --git a/gdb/obsd-tdep.c b/gdb/obsd-tdep.c index cb941fb..7667bac 100644 --- a/gdb/obsd-tdep.c +++ b/gdb/obsd-tdep.c @@ -30,7 +30,7 @@ obsd_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc) msym = lookup_minimal_symbol("_dl_bind", NULL, NULL); if (msym && SYMBOL_VALUE_ADDRESS (msym) == pc) - return frame_pc_unwind (get_current_frame ()); + return frame_unwind_caller_pc (get_current_frame ()); else return find_solib_trampoline_target (get_current_frame (), pc); } diff --git a/gdb/sol2-tdep.c b/gdb/sol2-tdep.c index 9e93589..f5d3bc8 100644 --- a/gdb/sol2-tdep.c +++ b/gdb/sol2-tdep.c @@ -30,7 +30,7 @@ sol2_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc) msym = lookup_minimal_symbol("elf_bndr", NULL, NULL); if (msym && SYMBOL_VALUE_ADDRESS (msym) == pc) - return frame_pc_unwind (get_current_frame ()); + return frame_unwind_caller_pc (get_current_frame ()); return 0; } diff --git a/gdb/stack.c b/gdb/stack.c index 18c4298..7465fbf 100644 --- a/gdb/stack.c +++ b/gdb/stack.c @@ -855,8 +855,16 @@ parse_frame_specification_1 (const char *frame_exp, const char *message, { if (frame_id_eq (id, get_frame_id (fid))) { - while (frame_id_eq (id, frame_unwind_id (fid))) - fid = get_prev_frame (fid); + struct frame_info *prev_frame; + + while (1) + { + prev_frame = get_prev_frame (fid); + if (!prev_frame + || !frame_id_eq (id, get_frame_id (prev_frame))) + break; + fid = prev_frame; + } return fid; } } @@ -985,7 +993,7 @@ frame_info (char *addr_exp, int from_tty) puts_filtered ("; "); wrap_here (" "); printf_filtered ("saved %s ", pc_regname); - fputs_filtered (paddress (frame_pc_unwind (fi)), gdb_stdout); + fputs_filtered (paddress (frame_unwind_caller_pc (fi)), gdb_stdout); printf_filtered ("\n"); if (calling_frame_info == NULL) -- 2.7.4