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* [binutils-gdb] Read the tpidr register from NT_ARM_TLS core dump notes on Linux Aarch64.
@ 2022-05-03 23:11 John Baldwin
0 siblings, 0 replies; only message in thread
From: John Baldwin @ 2022-05-03 23:11 UTC (permalink / raw)
To: gdb-cvs
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=224151d7748ef13df82878067266cfaa9861e360
commit 224151d7748ef13df82878067266cfaa9861e360
Author: John Baldwin <jhb@FreeBSD.org>
Date: Tue May 3 16:05:10 2022 -0700
Read the tpidr register from NT_ARM_TLS core dump notes on Linux Aarch64.
Diff:
---
gdb/aarch64-linux-tdep.c | 21 ++++++++++++++++++++-
gdb/aarch64-linux-tdep.h | 3 +++
2 files changed, 23 insertions(+), 1 deletion(-)
diff --git a/gdb/aarch64-linux-tdep.c b/gdb/aarch64-linux-tdep.c
index 8cfb64d9f4a..dbebcd4f0e0 100644
--- a/gdb/aarch64-linux-tdep.c
+++ b/gdb/aarch64-linux-tdep.c
@@ -749,6 +749,24 @@ aarch64_linux_iterate_over_regset_sections (struct gdbarch *gdbarch,
AARCH64_LINUX_SIZEOF_MTE_REGSET, &aarch64_linux_mte_regset,
"MTE registers", cb_data);
}
+
+ if (tdep->has_tls ())
+ {
+ const struct regcache_map_entry tls_regmap[] =
+ {
+ { 1, tdep->tls_regnum, 8 },
+ { 0 }
+ };
+
+ const struct regset aarch64_linux_tls_regset =
+ {
+ tls_regmap, regcache_supply_regset, regcache_collect_regset
+ };
+
+ cb (".reg-aarch-tls", AARCH64_LINUX_SIZEOF_TLSREGSET,
+ AARCH64_LINUX_SIZEOF_TLSREGSET, &aarch64_linux_tls_regset,
+ "TLS register", cb_data);
+ }
}
/* Implement the "core_read_description" gdbarch method. */
@@ -757,13 +775,14 @@ static const struct target_desc *
aarch64_linux_core_read_description (struct gdbarch *gdbarch,
struct target_ops *target, bfd *abfd)
{
+ asection *tls = bfd_get_section_by_name (abfd, ".reg-aarch-tls");
CORE_ADDR hwcap = linux_get_hwcap (target);
CORE_ADDR hwcap2 = linux_get_hwcap2 (target);
bool pauth_p = hwcap & AARCH64_HWCAP_PACA;
bool mte_p = hwcap2 & HWCAP2_MTE;
return aarch64_read_description (aarch64_linux_core_read_vq (gdbarch, abfd),
- pauth_p, mte_p, false);
+ pauth_p, mte_p, tls != nullptr);
}
/* Implementation of `gdbarch_stap_is_single_operand', as defined in
diff --git a/gdb/aarch64-linux-tdep.h b/gdb/aarch64-linux-tdep.h
index 8ae33efc605..9a7e4339dba 100644
--- a/gdb/aarch64-linux-tdep.h
+++ b/gdb/aarch64-linux-tdep.h
@@ -39,6 +39,9 @@
/* The MTE regset consists of a 64-bit register. */
#define AARCH64_LINUX_SIZEOF_MTE_REGSET (8)
+/* The TLS regset consists of a single register. */
+#define AARCH64_LINUX_SIZEOF_TLSREGSET (X_REGISTER_SIZE)
+
extern const struct regset aarch64_linux_gregset;
extern const struct regset aarch64_linux_fpregset;
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2022-05-03 23:11 [binutils-gdb] Read the tpidr register from NT_ARM_TLS core dump notes on Linux Aarch64 John Baldwin
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