From 236ef0346d88efffd1ca1da1a5d80724cb145660 Mon Sep 17 00:00:00 2001 From: Pedro Alves Date: Tue, 23 Jun 2020 15:18:41 +0100 Subject: Fix "maint selftest" regression, add struct scoped_mock_context This commit: commit 3922b302645fda04da42a5279399578ae2f6206c Author: Pedro Alves AuthorDate: Thu Jun 18 21:28:37 2020 +0100 Decouple inferior_ptid/inferior_thread(); dup ptids in thread list (PR 25412) caused a regression for gdb.gdb/unittest.exp when GDB is configured with --enable-targets=all. The failure is: gdb/thread.c:95: internal-error: thread_info* inferior_thread(): Assertion `current_thread_ != nullptr' failed. The problem is in this line in regcache.c:cooked_read_test: /* Switch to the mock thread. */ scoped_restore restore_inferior_ptid = make_scoped_restore (&inferior_ptid, mock_ptid); Both gdbarch-selftest.c and regcache.c set up a similar mock context, but the series the patch above belongs to only updated the gdbarch-selftest.c context to not write to inferior_ptid directly, and missed updating regcache.c's. Instead of copying the fix over to regcache.c, share the mock context setup code in a new RAII class, based on gdbarch-selftest.c's version. Also remove the "target already pushed" error from regcache.c, like it had been removed from gdbarch-selftest.c in the multi-target series. That check is unnecessary because each inferior now has its own target stack, and the unit test pushes a target on a separate (mock) inferior, not the current inferior on entry. gdb/ChangeLog: 2020-06-23 Pedro Alves * gdbarch-selftests.c: Don't include inferior.h, gdbthread.h or progspace-and-thread.h. Include scoped-mock-context.h instead. (register_to_value_test): Use scoped_mock_context. * regcache.c: Include "scoped-mock-context.h". (cooked_read_test): Don't error out if a target is already pushed. Use scoped_mock_context. Adjust. * scoped-mock-context.h: New file. --- gdb/gdbarch-selftests.c | 39 ++------------------------------------- 1 file changed, 2 insertions(+), 37 deletions(-) (limited to 'gdb/gdbarch-selftests.c') diff --git a/gdb/gdbarch-selftests.c b/gdb/gdbarch-selftests.c index 91aa9d8..4f9adbd 100644 --- a/gdb/gdbarch-selftests.c +++ b/gdb/gdbarch-selftests.c @@ -20,14 +20,12 @@ #include "defs.h" #include "gdbsupport/selftest.h" #include "selftest-arch.h" -#include "inferior.h" -#include "gdbthread.h" #include "target.h" #include "test-target.h" #include "target-float.h" #include "gdbsupport/def-vector.h" #include "gdbarch.h" -#include "progspace-and-thread.h" +#include "scoped-mock-context.h" namespace selftests { @@ -71,40 +69,7 @@ register_to_value_test (struct gdbarch *gdbarch) builtin->builtin_char32, }; - /* Create a mock environment. An inferior with a thread, with a - process_stratum target pushed. */ - - test_target_ops mock_target; - ptid_t mock_ptid (1, 1); - program_space mock_pspace (new_address_space ()); - inferior mock_inferior (mock_ptid.pid ()); - mock_inferior.gdbarch = gdbarch; - mock_inferior.aspace = mock_pspace.aspace; - mock_inferior.pspace = &mock_pspace; - thread_info mock_thread (&mock_inferior, mock_ptid); - - scoped_restore_current_pspace_and_thread restore_pspace_thread; - - scoped_restore restore_thread_list - = make_scoped_restore (&mock_inferior.thread_list, &mock_thread); - - /* Add the mock inferior to the inferior list so that look ups by - target+ptid can find it. */ - scoped_restore restore_inferior_list - = make_scoped_restore (&inferior_list, &mock_inferior); - - /* Switch to the mock inferior. */ - switch_to_inferior_no_thread (&mock_inferior); - - /* Push the process_stratum target so we can mock accessing - registers. */ - push_target (&mock_target); - - /* Pop it again on exit (return/exception). */ - SCOPE_EXIT { pop_all_targets_at_and_above (process_stratum); }; - - /* Switch to the mock thread. */ - switch_to_thread (&mock_thread); + scoped_mock_context mockctx (gdbarch); struct frame_info *frame = get_current_frame (); const int num_regs = gdbarch_num_cooked_regs (gdbarch); -- cgit v1.1