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| author | Luis Machado <luis.machado@linaro.org> | 2020-06-15 13:59:40 -0300 |
|---|---|---|
| committer | Luis Machado <luis.machado@linaro.org> | 2021-03-24 14:52:57 -0300 |
| commit | 5e984dbf3523ea86e3ef3750d6ecaeed74d87c87 (patch) | |
| tree | f6415f72ff6a9c4aae4905a2ad94b70e48b201eb /gdb/aarch64-tdep.h | |
| parent | c1bd443b4d86e12f2a97856270e40df24c7f3df7 (diff) | |
| download | binutils-gdb-5e984dbf3523ea86e3ef3750d6ecaeed74d87c87.tar.gz | |
AArch64: Add MTE register set support for GDB and gdbserver
AArch64 MTE support in the Linux kernel exposes a new register
through ptrace. This patch adds the required code to support it.
include/ChangeLog:
2021-03-24 Luis Machado <luis.machado@linaro.org>
* elf/common.h (NT_ARM_TAGGED_ADDR_CTRL): Define.
gdb/ChangeLog:
2021-03-24 Luis Machado <luis.machado@linaro.org>
* aarch64-linux-nat.c (fetch_mteregs_from_thread): New function.
(store_mteregs_to_thread): New function.
(aarch64_linux_nat_target::fetch_registers): Update to call
fetch_mteregs_from_thread.
(aarch64_linux_nat_target::store_registers): Update to call
store_mteregs_to_thread.
* aarch64-tdep.c (aarch64_mte_register_names): New struct.
(aarch64_cannot_store_register): Handle MTE registers.
(aarch64_gdbarch_init): Initialize and setup MTE registers.
* aarch64-tdep.h (gdbarch_tdep) <mte_reg_base>: New field.
<has_mte>: New method.
* arch/aarch64-linux.h (AARCH64_LINUX_SIZEOF_MTE): Define.
gdbserver/ChangeLog:
2021-03-24 Luis Machado <luis.machado@linaro.org>
* linux-aarch64-low.cc (aarch64_fill_mteregset): New function.
(aarch64_store_mteregset): New function.
(aarch64_regsets): Add MTE register set entry.
(aarch64_sve_regsets): Add MTE register set entry.
Diffstat (limited to 'gdb/aarch64-tdep.h')
| -rw-r--r-- | gdb/aarch64-tdep.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gdb/aarch64-tdep.h b/gdb/aarch64-tdep.h index f6d24292f84..7bf612b012a 100644 --- a/gdb/aarch64-tdep.h +++ b/gdb/aarch64-tdep.h @@ -100,6 +100,15 @@ struct gdbarch_tdep { return pauth_reg_base != -1; } + + /* First MTE register. This is -1 if no MTE registers are available. */ + int mte_reg_base; + + /* Returns true if the target supports MTE. */ + bool has_mte () const + { + return mte_reg_base != -1; + } }; const target_desc *aarch64_read_description (uint64_t vq, bool pauth_p, |