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qemu/gdb-xml/aarch64-pauth.xml

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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>
2023-02-28 00:33:26 +03:00
<?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">
target/arm: Report pauth information to gdb as 'pauth_v2' So that we can avoid the "older gdb crashes" problem described in commit 5787d17a42f7af4 and which caused us to disable reporting pauth information via the gdbstub, newer gdb is going to implement support for recognizing the pauth information via a new feature name: org.gnu.gdb.aarch64.pauth_v2 Older gdb won't recognize this feature name, so we can re-enable the pauth support under the new name without risking them crashing. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20230406150827.3322670-1-peter.maydell@linaro.org
2023-04-20 12:21:16 +03:00
<feature name="org.gnu.gdb.aarch64.pauth_v2">
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>
2023-02-28 00:33:26 +03:00
<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>
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