From a63f2d2feedcfce401ae1d7d03d119bfa5e4d8bc Mon Sep 17 00:00:00 2001 From: Yao Qi Date: Fri, 24 Nov 2017 13:04:30 +0000 Subject: [PATCH] cooked_read test for readonly regcache This patch adds a test to check cooked_read for readonly regcache. For raw registers, cooked_read get either REG_VALID or REG_UNKNOWN, depends on the raw register is in save_reggroup or not. For pseudo register, cooked_read get different result in different ports. gdb: 2017-11-24 Yao Qi * regcache.c (cooked_read_test): Add more test for readonly regcache. --- gdb/ChangeLog | 5 ++++ gdb/regcache.c | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 81 insertions(+) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 9947aaa8356..aecd85b2f34 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,8 @@ +2017-11-24 Yao Qi + + * regcache.c (cooked_read_test): Add more test for readonly + regcache. + 2017-11-24 Yao Qi * gdbarch-selftests.c (test_target_has_registers): Move it to diff --git a/gdb/regcache.c b/gdb/regcache.c index c37a520b3f8..e82176b202c 100644 --- a/gdb/regcache.c +++ b/gdb/regcache.c @@ -1865,6 +1865,82 @@ cooked_read_test (struct gdbarch *gdbarch) mock_target.reset (); } + + regcache readonly (regcache::readonly, readwrite); + + /* GDB may go to target layer to fetch all registers and memory for + readonly regcache. */ + mock_target.reset (); + + for (int regnum = 0; + regnum < gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch); + regnum++) + { + if (gdbarch_bfd_arch_info (gdbarch)->arch == bfd_arch_mt) + { + /* Trigger an internal error otherwise. */ + continue; + } + + if (register_size (gdbarch, regnum) == 0) + continue; + + gdb::def_vector buf (register_size (gdbarch, regnum)); + enum register_status status = readonly.cooked_read (regnum, + buf.data ()); + + if (regnum < gdbarch_num_regs (gdbarch)) + { + auto bfd_arch = gdbarch_bfd_arch_info (gdbarch)->arch; + + if (bfd_arch == bfd_arch_frv || bfd_arch == bfd_arch_h8300 + || bfd_arch == bfd_arch_m32c || bfd_arch == bfd_arch_sh + || bfd_arch == bfd_arch_alpha || bfd_arch == bfd_arch_v850 + || bfd_arch == bfd_arch_msp430 || bfd_arch == bfd_arch_mep + || bfd_arch == bfd_arch_mips || bfd_arch == bfd_arch_v850_rh850 + || bfd_arch == bfd_arch_tic6x || bfd_arch == bfd_arch_mn10300 + || bfd_arch == bfd_arch_rl78 || bfd_arch == bfd_arch_score) + { + /* Raw registers. If raw registers are not in save_reggroup, + their status are unknown. */ + if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) + SELF_CHECK (status == REG_VALID); + else + SELF_CHECK (status == REG_UNKNOWN); + } + else + SELF_CHECK (status == REG_VALID); + } + else + { + if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) + SELF_CHECK (status == REG_VALID); + else + { + /* If pseudo registers are not in save_reggroup, some of + them can be computed from saved raw registers, but some + of them are unknown. */ + auto bfd_arch = gdbarch_bfd_arch_info (gdbarch)->arch; + + if (bfd_arch == bfd_arch_frv + || bfd_arch == bfd_arch_m32c + || bfd_arch == bfd_arch_mep + || bfd_arch == bfd_arch_sh) + SELF_CHECK (status == REG_VALID || status == REG_UNKNOWN); + else if (bfd_arch == bfd_arch_mips + || bfd_arch == bfd_arch_h8300) + SELF_CHECK (status == REG_UNKNOWN); + else + SELF_CHECK (status == REG_VALID); + } + } + + SELF_CHECK (mock_target.fetch_registers_called == 0); + SELF_CHECK (mock_target.store_registers_called == 0); + SELF_CHECK (mock_target.xfer_partial_called == 0); + + mock_target.reset (); + } } } // namespace selftests -- 2.30.2