From: John Baldwin <jhb@FreeBSD.org>
To: binutils@sourceware.org, gdb-patches@sourceware.org
Subject: [PATCH 09/12] Read the tpidr register from NT_ARM_TLS core dump notes on FreeBSD/Aarch64.
Date: Wed, 23 Mar 2022 14:00:48 -0700 [thread overview]
Message-ID: <20220323210048.25525-10-jhb@FreeBSD.org> (raw)
In-Reply-To: <20220323210048.25525-1-jhb@FreeBSD.org>
---
gdb/aarch64-fbsd-tdep.c | 34 ++++++++++++++++++++++++++++++++++
gdb/aarch64-fbsd-tdep.h | 3 +++
2 files changed, 37 insertions(+)
diff --git a/gdb/aarch64-fbsd-tdep.c b/gdb/aarch64-fbsd-tdep.c
index 32f441892a8..3fb1010d43e 100644
--- a/gdb/aarch64-fbsd-tdep.c
+++ b/gdb/aarch64-fbsd-tdep.c
@@ -142,10 +142,42 @@ aarch64_fbsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
void *cb_data,
const struct regcache *regcache)
{
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
+
cb (".reg", AARCH64_FBSD_SIZEOF_GREGSET, AARCH64_FBSD_SIZEOF_GREGSET,
&aarch64_fbsd_gregset, NULL, cb_data);
cb (".reg2", AARCH64_FBSD_SIZEOF_FPREGSET, AARCH64_FBSD_SIZEOF_FPREGSET,
&aarch64_fbsd_fpregset, NULL, cb_data);
+
+ if (tdep->has_tls ())
+ {
+ /* Create this on the fly in order to handle the variable location. */
+ const struct regcache_map_entry tls_regmap[] =
+ {
+ { 1, AARCH64_TPIDR_REGNUM (tdep->tls_reg_base), 8},
+ { 0 }
+ };
+
+ const struct regset aarch64_fbsd_tls_regset =
+ {
+ tls_regmap, regcache_supply_regset, regcache_collect_regset
+ };
+
+ cb (".reg-aarch-tls", AARCH64_FBSD_SIZEOF_TLSREGSET,
+ AARCH64_FBSD_SIZEOF_TLSREGSET, &aarch64_fbsd_tls_regset,
+ "TLS register", cb_data);
+ }
+}
+
+/* Implement the "core_read_description" gdbarch method. */
+
+static const struct target_desc *
+aarch64_fbsd_core_read_description (struct gdbarch *gdbarch,
+ struct target_ops *target, bfd *abfd)
+{
+ asection *tls = bfd_get_section_by_name (abfd, ".reg-aarch-tls");
+
+ return aarch64_read_description (0, false, false, tls != nullptr);
}
/* Implement the 'init_osabi' method of struct gdb_osabi_handler. */
@@ -168,6 +200,8 @@ aarch64_fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
set_gdbarch_iterate_over_regset_sections
(gdbarch, aarch64_fbsd_iterate_over_regset_sections);
+ set_gdbarch_core_read_description (gdbarch,
+ aarch64_fbsd_core_read_description);
}
void _initialize_aarch64_fbsd_tdep ();
diff --git a/gdb/aarch64-fbsd-tdep.h b/gdb/aarch64-fbsd-tdep.h
index fc8fbee8843..7419ea6be03 100644
--- a/gdb/aarch64-fbsd-tdep.h
+++ b/gdb/aarch64-fbsd-tdep.h
@@ -32,6 +32,9 @@
alignment. */
#define AARCH64_FBSD_SIZEOF_FPREGSET (33 * V_REGISTER_SIZE)
+/* The TLS regset consists of a single register. */
+#define AARCH64_FBSD_SIZEOF_TLSREGSET (X_REGISTER_SIZE)
+
extern const struct regset aarch64_fbsd_gregset;
extern const struct regset aarch64_fbsd_fpregset;
--
2.34.1
prev parent reply other threads:[~2022-03-23 21:01 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-23 21:00 [PATCH 00/12] * Support for Thread Local Storage (TLS) variables on FreeBSD arm and aarch64 architectures John Baldwin
2022-03-23 21:00 ` [PATCH 01/12] Handle another edge case for TLS variable lookups John Baldwin
2022-03-23 23:55 ` John Baldwin
2022-03-24 0:26 ` John Baldwin
2022-03-23 21:00 ` [PATCH 02/12] fbsd-nat: Add helper routines for register sets using PT_[G]SETREGSET John Baldwin
2022-03-24 8:51 ` Luis Machado
2022-03-24 17:45 ` John Baldwin
2022-03-23 21:00 ` [PATCH 03/12] Create pseudo sections for NT_ARM_TLS notes on FreeBSD John Baldwin
2022-03-23 21:00 ` [PATCH 04/12] Add an arm-tls feature which includes the tpidruro register from CP15 John Baldwin
2022-04-04 8:01 ` Luis Machado
2022-04-12 23:36 ` John Baldwin
2022-04-14 10:23 ` Luis Machado
2022-04-19 16:18 ` John Baldwin
2022-04-20 6:59 ` Luis Machado
2022-03-23 21:00 ` [PATCH 05/12] Read the tpidruro register from NT_ARM_TLS core dump notes on FreeBSD/arm John Baldwin
2022-03-23 21:00 ` [PATCH 06/12] Support TLS variables " John Baldwin
2022-03-23 21:00 ` [PATCH 07/12] Fetch the NT_ARM_TLS register set for native FreeBSD/arm processes John Baldwin
2022-03-23 21:00 ` [PATCH 08/12] Add an aarch64-tls feature which includes the tpidr register John Baldwin
2022-03-28 10:16 ` Luis Machado
2022-04-01 23:30 ` John Baldwin
2022-04-04 8:06 ` Luis Machado
2022-04-04 12:18 ` Luis Machado
2022-05-03 21:14 ` Luis Machado
2022-05-03 21:30 ` John Baldwin
2022-05-03 21:34 ` Luis Machado
2022-03-23 21:00 ` John Baldwin [this message]
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