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| author | Alan Hayward <alan.hayward@arm.com> | 2019-03-22 10:00:28 +0000 |
|---|---|---|
| committer | Alan Hayward <alan.hayward@arm.com> | 2019-03-22 10:10:22 +0000 |
| commit | ee4fbcfa26eb4a2a3666f7c1cc31447c3cffa023 (patch) | |
| tree | 16ce0420d78dc816de2e8c1017a6b16efa229846 /gdb/aarch64-linux-tdep.h | |
| parent | 6dc0ebde59dfb73eae507ced718bafa54023bf33 (diff) | |
| download | fsf-binutils-gdb-ee4fbcfa26eb4a2a3666f7c1cc31447c3cffa023.zip fsf-binutils-gdb-ee4fbcfa26eb4a2a3666f7c1cc31447c3cffa023.tar.gz fsf-binutils-gdb-ee4fbcfa26eb4a2a3666f7c1cc31447c3cffa023.tar.bz2 | |
AArch64: Use HWCAP to detect pauth feature
Add aarch64_get_hwcap functions for reading the HWCAP.
From this extract the PACA value and use this to enable pauth.
gdb/ChangeLog:
* aarch64-linux-nat.c
(aarch64_linux_nat_target::read_description): Read PACA hwcap.
* aarch64-linux-tdep.c
(aarch64_linux_core_read_description): Likewise.
(aarch64_linux_get_hwcap): New function.
* aarch64-linux-tdep.h (AARCH64_HWCAP_PACA): New define.
(aarch64_linux_get_hwcap): New declaration.
gdb/gdbserver/ChangeLog:
* linux-aarch64-low.c (AARCH64_HWCAP_PACA): New define.
(aarch64_get_hwcap): New function.
(aarch64_arch_setup): Read APIA hwcap.
Diffstat (limited to 'gdb/aarch64-linux-tdep.h')
| -rw-r--r-- | gdb/aarch64-linux-tdep.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gdb/aarch64-linux-tdep.h b/gdb/aarch64-linux-tdep.h index 814222e..e9f7c9b 100644 --- a/gdb/aarch64-linux-tdep.h +++ b/gdb/aarch64-linux-tdep.h @@ -36,4 +36,10 @@ extern const struct regset aarch64_linux_gregset; extern const struct regset aarch64_linux_fpregset; +/* Matches HWCAP_PACA in kernel header arch/arm64/include/uapi/asm/hwcap.h. */ +#define AARCH64_HWCAP_PACA (1 << 30) + +/* Fetch the AT_HWCAP entry from the auxv vector for the given TARGET. */ +bool aarch64_linux_get_hwcap (struct target_ops *target, CORE_ADDR *hwcap); + #endif /* AARCH64_LINUX_TDEP_H */ |