diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2023-02-27 11:33:26 -1000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2023-03-06 14:08:11 +0000 |
| commit | e995d5cce4a022afc4624471cafd2e4eb72962e6 (patch) | |
| tree | 608192b3e8f286b980878e528dee54b270dadd48 /gdb-xml | |
| parent | abf1f1b03aad07d9b7aa4bb5b06ac5a2c7b134d1 (diff) | |
target/arm: Implement gdbstub pauth extension
The extension is primarily defined by the Linux kernel NT_ARM_PAC_MASK
ptrace register set.
The original gdb feature consists of two masks, data and code, which are
used to mask out the authentication code within a pointer. Following
discussion with Luis Machado, add two more masks in order to support
pointers within the high half of the address space (i.e. TTBR1 vs TTBR0).
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1105
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230227213329.793795-12-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'gdb-xml')
| -rw-r--r-- | gdb-xml/aarch64-pauth.xml | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/gdb-xml/aarch64-pauth.xml b/gdb-xml/aarch64-pauth.xml new file mode 100644 index 0000000000..24af5f903c --- /dev/null +++ b/gdb-xml/aarch64-pauth.xml @@ -0,0 +1,15 @@ +<?xml version="1.0"?> +<!-- Copyright (C) 2018-2022 Free Software Foundation, Inc. + + Copying and distribution of this file, with or without modification, + are permitted in any medium without royalty provided the copyright + notice and this notice are preserved. --> + +<!DOCTYPE feature SYSTEM "gdb-target.dtd"> +<feature name="org.gnu.gdb.aarch64.pauth"> + <reg name="pauth_dmask" bitsize="64"/> + <reg name="pauth_cmask" bitsize="64"/> + <reg name="pauth_dmask_high" bitsize="64"/> + <reg name="pauth_cmask_high" bitsize="64"/> +</feature> + |