diff options
Diffstat (limited to 'gdb/gdbarch_components.py')
| -rw-r--r-- | gdb/gdbarch_components.py | 53 |
1 files changed, 45 insertions, 8 deletions
diff --git a/gdb/gdbarch_components.py b/gdb/gdbarch_components.py index 4006380..cc7c6d8 100644 --- a/gdb/gdbarch_components.py +++ b/gdb/gdbarch_components.py @@ -1232,18 +1232,55 @@ possible it should be in TARGET_READ_PC instead). Method( comment=""" On some architectures, not all bits of a pointer are significant. -On AArch64, for example, the top bits of a pointer may carry a "tag", which -can be ignored by the kernel and the hardware. The "tag" can be regarded as -additional data associated with the pointer, but it is not part of the address. +On AArch64 and amd64, for example, the top bits of a pointer may carry a +"tag", which can be ignored by the kernel and the hardware. The "tag" can be +regarded as additional data associated with the pointer, but it is not part +of the address. Given a pointer for the architecture, this hook removes all the -non-significant bits and sign-extends things as needed. It gets used to remove -non-address bits from data pointers (for example, removing the AArch64 MTE tag -bits from a pointer) and from code pointers (removing the AArch64 PAC signature -from a pointer containing the return address). +non-significant bits and sign-extends things as needed. It gets used to +remove non-address bits from pointers used for watchpoints. """, type="CORE_ADDR", - name="remove_non_address_bits", + name="remove_non_address_bits_watchpoint", + params=[("CORE_ADDR", "pointer")], + predefault="default_remove_non_address_bits", + invalid=False, +) + +Method( + comment=""" +On some architectures, not all bits of a pointer are significant. +On AArch64 and amd64, for example, the top bits of a pointer may carry a +"tag", which can be ignored by the kernel and the hardware. The "tag" can be +regarded as additional data associated with the pointer, but it is not part +of the address. + +Given a pointer for the architecture, this hook removes all the +non-significant bits and sign-extends things as needed. It gets used to +remove non-address bits from pointers used for breakpoints. +""", + type="CORE_ADDR", + name="remove_non_address_bits_breakpoint", + params=[("CORE_ADDR", "pointer")], + predefault="default_remove_non_address_bits", + invalid=False, +) + +Method( + comment=""" +On some architectures, not all bits of a pointer are significant. +On AArch64 and amd64, for example, the top bits of a pointer may carry a +"tag", which can be ignored by the kernel and the hardware. The "tag" can be +regarded as additional data associated with the pointer, but it is not part +of the address. + +Given a pointer for the architecture, this hook removes all the +non-significant bits and sign-extends things as needed. It gets used to +remove non-address bits from any pointer used to access memory. +""", + type="CORE_ADDR", + name="remove_non_address_bits_memory", params=[("CORE_ADDR", "pointer")], predefault="default_remove_non_address_bits", invalid=False, |