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d078308a2e
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.
61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
/* Common target dependent code for GNU/Linux on PPC systems.
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Copyright (C) 2018 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef ARCH_PPC_LINUX_COMMON_H
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#define ARCH_PPC_LINUX_COMMON_H
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struct target_desc;
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/* The core file VMX regset has 34 16-byte fields (32 16-byte vector
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registers, plus two fields containing 4-byte registers, VSCR and
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VRSAVE), while the ptrace calls return or read 33 16-byte fields
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plus a 4-byte field for VRSAVE. For simplicity we use the longer
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length for both cases. */
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#define PPC_LINUX_SIZEOF_VRREGSET 544
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#define PPC_LINUX_SIZEOF_VSXREGSET 256
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/* Check if the hwcap auxv entry indicates that isa205 is supported. */
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bool ppc_linux_has_isa205 (unsigned long hwcap);
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/* Features used to determine the target description. */
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struct ppc_linux_features
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{
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unsigned int wordsize;
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bool altivec;
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bool vsx;
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bool isa205;
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bool cell;
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};
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/* Base value for ppc_linux_features variables. */
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const struct ppc_linux_features ppc_linux_no_features = {
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0,
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false,
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false,
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false,
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false,
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};
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/* Return a target description that matches FEATURES. */
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const struct target_desc * ppc_linux_match_description
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(struct ppc_linux_features features);
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#endif /* ARCH_PPC_LINUX_COMMON_H */
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