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authorPedro Franco de Carvalho <pedromfc@linux.vnet.ibm.com>2018-05-22 11:09:05 -0300
committerPedro Franco de Carvalho <pedromfc@linux.vnet.ibm.com>2018-05-22 11:52:02 -0300
commitd078308a2ed1290e587b4365e2d7382d951a26af (patch)
treeaf477b250fd1fcb1889e31c062a3c42942f34d15 /gdb/arch
parent7273b5fc4baef93f8caaed678476e8cb3625338d (diff)
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[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.h9
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);