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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 /gdbserver | |
| parent | c1bd443b4d86e12f2a97856270e40df24c7f3df7 (diff) | |
| download | fsf-binutils-gdb-5e984dbf3523ea86e3ef3750d6ecaeed74d87c87.zip fsf-binutils-gdb-5e984dbf3523ea86e3ef3750d6ecaeed74d87c87.tar.gz fsf-binutils-gdb-5e984dbf3523ea86e3ef3750d6ecaeed74d87c87.tar.bz2 | |
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 'gdbserver')
| -rw-r--r-- | gdbserver/ChangeLog | 7 | ||||
| -rw-r--r-- | gdbserver/linux-aarch64-low.cc | 29 |
2 files changed, 36 insertions, 0 deletions
diff --git a/gdbserver/ChangeLog b/gdbserver/ChangeLog index db90660..d4b8d80 100644 --- a/gdbserver/ChangeLog +++ b/gdbserver/ChangeLog @@ -1,5 +1,12 @@ 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. + +2021-03-24 Luis Machado <luis.machado@linaro.org> + * linux-aarch64-ipa.cc (get_ipa_tdesc): Update call to aarch64_linux_read_description. (initialize_low_tracepoint): Likewise. diff --git a/gdbserver/linux-aarch64-low.cc b/gdbserver/linux-aarch64-low.cc index 14493c1..a066d96 100644 --- a/gdbserver/linux-aarch64-low.cc +++ b/gdbserver/linux-aarch64-low.cc @@ -261,6 +261,29 @@ aarch64_store_pauthregset (struct regcache *regcache, const void *buf) &pauth_regset[1]); } +/* Fill BUF with the MTE registers from the regcache. */ + +static void +aarch64_fill_mteregset (struct regcache *regcache, void *buf) +{ + uint64_t *mte_regset = (uint64_t *) buf; + int mte_base = find_regno (regcache->tdesc, "tag_ctl"); + + collect_register (regcache, mte_base, mte_regset); +} + +/* Store the MTE registers to regcache. */ + +static void +aarch64_store_mteregset (struct regcache *regcache, const void *buf) +{ + uint64_t *mte_regset = (uint64_t *) buf; + int mte_base = find_regno (regcache->tdesc, "tag_ctl"); + + /* Tag Control register */ + supply_register (regcache, mte_base, mte_regset); +} + bool aarch64_target::low_supports_breakpoints () { @@ -706,6 +729,9 @@ static struct regset_info aarch64_regsets[] = { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_ARM_PAC_MASK, AARCH64_PAUTH_REGS_SIZE, OPTIONAL_REGS, NULL, aarch64_store_pauthregset }, + { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_ARM_TAGGED_ADDR_CTRL, + AARCH64_LINUX_SIZEOF_MTE, OPTIONAL_REGS, aarch64_fill_mteregset, + aarch64_store_mteregset }, NULL_REGSET }; @@ -735,6 +761,9 @@ static struct regset_info aarch64_sve_regsets[] = { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_ARM_PAC_MASK, AARCH64_PAUTH_REGS_SIZE, OPTIONAL_REGS, NULL, aarch64_store_pauthregset }, + { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_ARM_TAGGED_ADDR_CTRL, + AARCH64_LINUX_SIZEOF_MTE, OPTIONAL_REGS, aarch64_fill_mteregset, + aarch64_store_mteregset }, NULL_REGSET }; |