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From: Pedro Alves <palves@sourceware.org> To: gdb-cvs@sourceware.org Subject: [binutils-gdb] Make catchpoint inherit breakpoint, eliminate init_raw_breakpoint Date: Fri, 20 May 2022 19:43:44 +0000 (GMT) [thread overview] Message-ID: <20220520194344.78AC5383088C@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=acd0955bc118d14dd32c08fd8a6b2ca7fa4e294c commit acd0955bc118d14dd32c08fd8a6b2ca7fa4e294c Author: Pedro Alves <pedro@palves.net> Date: Sat May 7 01:23:03 2022 +0100 Make catchpoint inherit breakpoint, eliminate init_raw_breakpoint struct catchpoint's ctor currently calls init_raw_breakpoint, which is a bit weird, as that ctor-like function takes a sal argument, but catchpoints don't have code locations. Instead, make struct catchpoint's ctor add the catchpoint's dummy location using add_dummy_location. init_raw_breakpoint uses add_location under the hood, and with a dummy sal it would ultimately use the breakpoint's gdbarch for the location's gdbarch, so replace the references to loc->gdbarch (which is now NULL) in syscall_catchpoint to references to the catchpoint's gdbarch. struct catchpoint's ctor was the last user of init_raw_breakpoint, so this commit eliminates the latter. Since catchpoint locations aren't code locations, make struct catchpoint inherit struct breakpoint instead of base_breakpoint. This let's us delete the tracepoint::re_set override too. Change-Id: Ib428bf71efb09fdaf399c56e4372b0f41d9c5869 Diff: --- gdb/break-catch-syscall.c | 6 +++--- gdb/breakpoint.c | 31 +++---------------------------- gdb/breakpoint.h | 7 +------ 3 files changed, 7 insertions(+), 37 deletions(-) diff --git a/gdb/break-catch-syscall.c b/gdb/break-catch-syscall.c index af55ecb1b5c..06d48466de7 100644 --- a/gdb/break-catch-syscall.c +++ b/gdb/break-catch-syscall.c @@ -197,7 +197,7 @@ syscall_catchpoint::print_it (const bpstat *bs) const must print "called syscall" or "returned from syscall". */ struct target_waitstatus last; struct syscall s; - struct gdbarch *gdbarch = bs->bp_location_at->gdbarch; + struct gdbarch *gdbarch = b->gdbarch; get_last_target_status (nullptr, nullptr, &last); @@ -242,7 +242,7 @@ syscall_catchpoint::print_one (bp_location **last_loc) const { struct value_print_options opts; struct ui_out *uiout = current_uiout; - struct gdbarch *gdbarch = loc->gdbarch; + struct gdbarch *gdbarch = loc->owner->gdbarch; get_user_print_options (&opts); /* Field 4, the address, is omitted (which makes the columns not @@ -293,7 +293,7 @@ syscall_catchpoint::print_one (bp_location **last_loc) const void syscall_catchpoint::print_mention () const { - struct gdbarch *gdbarch = loc->gdbarch; + struct gdbarch *gdbarch = loc->owner->gdbarch; if (!syscalls_to_be_caught.empty ()) { diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c index 0ba2ea2f6b7..96cf1ee7a82 100644 --- a/gdb/breakpoint.c +++ b/gdb/breakpoint.c @@ -7266,30 +7266,6 @@ get_sal_arch (struct symtab_and_line sal) return NULL; } -/* Low level routine for partially initializing a breakpoint of type - BPTYPE. The newly created breakpoint's address, section, source - file name, and line number are provided by SAL. - - It is expected that the caller will complete the initialization of - the newly created breakpoint struct as well as output any status - information regarding the creation of a new breakpoint. */ - -static void -init_raw_breakpoint (struct breakpoint *b, struct symtab_and_line sal, - enum bptype bptype) -{ - b->add_location (sal); - - if (bptype != bp_catchpoint) - gdb_assert (sal.pspace != NULL); - - /* Store the program space that was used to set the breakpoint, - except for ordinary breakpoints, which are independent of the - program space. */ - if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) - b->pspace = sal.pspace; -} - /* Call this routine when stepping and nexting to enable a breakpoint if we do a longjmp() or 'throw' in TP. FRAME is the frame which initiated the operation. */ @@ -7751,12 +7727,11 @@ disable_breakpoints_in_freed_objfile (struct objfile *objfile) catchpoint::catchpoint (struct gdbarch *gdbarch, bool temp, const char *cond_string_) - : base_breakpoint (gdbarch, bp_catchpoint) + : breakpoint (gdbarch, bp_catchpoint) { - symtab_and_line sal; - sal.pspace = current_program_space; + add_dummy_location (this, current_program_space); - init_raw_breakpoint (this, sal, bp_catchpoint); + pspace = current_program_space; if (cond_string_ != nullptr) cond_string = make_unique_xstrdup (cond_string_); diff --git a/gdb/breakpoint.h b/gdb/breakpoint.h index 7375e976dc6..21dd8d53b2d 100644 --- a/gdb/breakpoint.h +++ b/gdb/breakpoint.h @@ -1030,18 +1030,13 @@ struct tracepoint : public base_breakpoint /* The base class for catchpoints. */ -struct catchpoint : public base_breakpoint +struct catchpoint : public breakpoint { /* If TEMP is true, then make the breakpoint temporary. If COND_STRING is not NULL, then store it in the breakpoint. */ catchpoint (struct gdbarch *gdbarch, bool temp, const char *cond_string); ~catchpoint () override = 0; - - void re_set () override - { - /* For catchpoints, the default is to do nothing. */ - } };
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