gdb: AArch64
21.4.1 AArch64
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When GDB is debugging the AArch64 architecture, it provides the
following special commands:
'set debug aarch64'
This command determines whether AArch64 architecture-specific
debugging messages are to be displayed.
'show debug aarch64'
Show whether AArch64 debugging messages are displayed.
21.4.1.1 AArch64 SVE.
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When GDB is debugging the AArch64 architecture, if the Scalable Vector
Extension (SVE) is present, then GDB will provide the vector registers
'$z0' through '$z31', vector predicate registers '$p0' through '$p15',
and the '$ffr' register. In addition, the pseudo register '$vg' will be
provided. This is the vector granule for the current thread and
represents the number of 64-bit chunks in an SVE 'z' register.
If the vector length changes, then the '$vg' register will be
updated, but the lengths of the 'z' and 'p' registers will not change.
This is a known limitation of GDB and does not affect the execution of
the target process.
Info Catalog
gdb: Architectures
gdb: i386