diff options
Diffstat (limited to 'gdb/aarch64-tdep.c')
| -rw-r--r-- | gdb/aarch64-tdep.c | 54 |
1 files changed, 44 insertions, 10 deletions
diff --git a/gdb/aarch64-tdep.c b/gdb/aarch64-tdep.c index cf20bb40b78..024385a9fd8 100644 --- a/gdb/aarch64-tdep.c +++ b/gdb/aarch64-tdep.c @@ -3465,8 +3465,18 @@ aarch64_features_from_target_desc (const struct target_desc *tdesc) = (tdesc_find_feature (tdesc, "org.gnu.gdb.aarch64.pauth") != nullptr); features.mte = (tdesc_find_feature (tdesc, "org.gnu.gdb.aarch64.mte") != nullptr); - features.tls - = (tdesc_find_feature (tdesc, "org.gnu.gdb.aarch64.tls") != nullptr); + + const struct tdesc_feature *tls_feature + = tdesc_find_feature (tdesc, "org.gnu.gdb.aarch64.tls"); + + if (tls_feature != nullptr) + { + /* We have TLS registers. Find out how many. */ + if (tdesc_unnumbered_register (tls_feature, "tpidr2")) + features.tls = 2; + else + features.tls = 1; + } return features; } @@ -3526,7 +3536,7 @@ aarch64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) bool valid_p = true; int i, num_regs = 0, num_pseudo_regs = 0; int first_pauth_regnum = -1, ra_sign_state_offset = -1; - int first_mte_regnum = -1, tls_regnum = -1; + int first_mte_regnum = -1, first_tls_regnum = -1; uint64_t vq = aarch64_get_tdesc_vq (info.target_desc); if (vq > AARCH64_MAX_SVE_VQ) @@ -3614,15 +3624,38 @@ aarch64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) } /* Add the TLS register. */ + int tls_register_count = 0; if (feature_tls != nullptr) { - tls_regnum = num_regs; - /* Validate the descriptor provides the mandatory TLS register - and allocate its number. */ - valid_p = tdesc_numbered_register (feature_tls, tdesc_data.get (), - tls_regnum, "tpidr"); + first_tls_regnum = num_regs; - num_regs++; + /* Look for the TLS registers. tpidr is required, but tpidr2 is + optional. */ + valid_p + = tdesc_numbered_register (feature_tls, tdesc_data.get (), + first_tls_regnum, "tpidr"); + + if (valid_p) + { + tls_register_count++; + + bool has_tpidr2 + = tdesc_numbered_register (feature_tls, tdesc_data.get (), + first_tls_regnum + tls_register_count, + "tpidr2"); + + /* Figure out how many TLS registers we have. */ + if (has_tpidr2) + tls_register_count++; + + num_regs += tls_register_count; + } + else + { + warning (_("Provided TLS register feature doesn't contain " + "required tpidr register.")); + return nullptr; + } } /* Add the pauth registers. */ @@ -3675,7 +3708,8 @@ aarch64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) tdep->pauth_reg_base = first_pauth_regnum; tdep->ra_sign_state_regnum = -1; tdep->mte_reg_base = first_mte_regnum; - tdep->tls_regnum = tls_regnum; + tdep->tls_regnum_base = first_tls_regnum; + tdep->tls_register_count = tls_register_count; set_gdbarch_push_dummy_call (gdbarch, aarch64_push_dummy_call); set_gdbarch_frame_align (gdbarch, aarch64_frame_align); |