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| author | Pedro Franco de Carvalho <pedromfc@linux.vnet.ibm.com> | 2018-05-22 11:09:05 -0300 |
|---|---|---|
| committer | Pedro Franco de Carvalho <pedromfc@linux.vnet.ibm.com> | 2018-05-22 11:52:02 -0300 |
| commit | d078308a2ed1290e587b4365e2d7382d951a26af (patch) | |
| tree | af477b250fd1fcb1889e31c062a3c42942f34d15 /gdb/arch | |
| parent | 7273b5fc4baef93f8caaed678476e8cb3625338d (diff) | |
| download | gdb-d078308a2ed1290e587b4365e2d7382d951a26af.zip gdb-d078308a2ed1290e587b4365e2d7382d951a26af.tar.gz gdb-d078308a2ed1290e587b4365e2d7382d951a26af.tar.bz2 | |
[PowerPC] Consolidate linux vector regset sizes
This patch defines constants for the sizes of the two vector
regsets (vector-scalar registers and regular vector registers).
The native, gdbserver and core file targets are changed to use these
constants.
The Linux ptrace calls return (or read) a smaller regset than the one
found in core files for vector registers, because ptrace uses a single
4-byte quantity for vrsave at the end of the regset, while the
core-file regset uses a full 16-byte field for vrsave. For simplicity,
the larger size is used in both cases, and so a buffer with 12 unused
additional bytes is passed to ptrace in the native target.
gdb/ChangeLog:
2018-05-22 Pedro Franco de Carvalho <pedromfc@linux.vnet.ibm.com>
* arch/ppc-linux-common.h (PPC_LINUX_SIZEOF_VRREGSET)
(PPC_LINUX_SIZEOF_VSXREGSET): Define.
* ppc-linux-nat.c (SIZEOF_VSXREGS, SIZEOF_VRREGS): Remove.
(gdb_vrregset_t): Change array type size to
PPC_LINUX_SIZEOF_VRREGSET.
(gdb_vsxregset_t): Change array type size to
PPC_LINUX_SIZEOF_VSXREGSET.
* ppc-linux-tdep.c (ppc_linux_iterate_over_regset_sections):
Change integer literals to PPC_LINUX_SIZEOF_VRREGSET and
PPC_LINUX_SIZEOF_VSXREGSET.
gdb/gdbserver/ChangeLog:
2018-05-22 Pedro Franco de Carvalho <pedromfc@linux.vnet.ibm.com>
* linux-ppc-low.c (SIZEOF_VSXREGS, SIZEOF_VRREGS): Remove.
(ppc_arch_setup): Change SIZEOF_VRREGS and SIZEOF_VSXREGS to
PPC_LINUX_SIZEOF_VRREGSET and PPC_LINUX_SIZEOF_VSXREGSET.
Diffstat (limited to 'gdb/arch')
| -rw-r--r-- | gdb/arch/ppc-linux-common.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gdb/arch/ppc-linux-common.h b/gdb/arch/ppc-linux-common.h index b82adc4..798781c 100644 --- a/gdb/arch/ppc-linux-common.h +++ b/gdb/arch/ppc-linux-common.h @@ -22,6 +22,15 @@ struct target_desc; +/* The core file VMX regset has 34 16-byte fields (32 16-byte vector + registers, plus two fields containing 4-byte registers, VSCR and + VRSAVE), while the ptrace calls return or read 33 16-byte fields + plus a 4-byte field for VRSAVE. For simplicity we use the longer + length for both cases. */ +#define PPC_LINUX_SIZEOF_VRREGSET 544 + +#define PPC_LINUX_SIZEOF_VSXREGSET 256 + /* Check if the hwcap auxv entry indicates that isa205 is supported. */ bool ppc_linux_has_isa205 (unsigned long hwcap); |