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4de283e4b5
Andreas Schwab and John Baldwin pointed out some bugs in the header sorting patch; and I noticed that the output was not correct when limited to a subset of files (a bug in my script). So, I'm reverting the patch. I may try again after fixing the issues pointed out. gdb/ChangeLog 2019-04-05 Tom Tromey <tom@tromey.com> Revert the header-sorting patch. * ft32-tdep.c: Revert. * frv-tdep.c: Revert. * frv-linux-tdep.c: Revert. * frame.c: Revert. * frame-unwind.c: Revert. * frame-base.c: Revert. * fork-child.c: Revert. * findvar.c: Revert. * findcmd.c: Revert. * filesystem.c: Revert. * filename-seen-cache.h: Revert. * filename-seen-cache.c: Revert. * fbsd-tdep.c: Revert. * fbsd-nat.h: Revert. * fbsd-nat.c: Revert. * f-valprint.c: Revert. * f-typeprint.c: Revert. * f-lang.c: Revert. * extension.h: Revert. * extension.c: Revert. * extension-priv.h: Revert. * expprint.c: Revert. * exec.h: Revert. * exec.c: Revert. * exceptions.c: Revert. * event-top.c: Revert. * event-loop.c: Revert. * eval.c: Revert. * elfread.c: Revert. * dwarf2read.h: Revert. * dwarf2read.c: Revert. * dwarf2loc.c: Revert. * dwarf2expr.h: Revert. * dwarf2expr.c: Revert. * dwarf2-frame.c: Revert. * dwarf2-frame-tailcall.c: Revert. * dwarf-index-write.h: Revert. * dwarf-index-write.c: Revert. * dwarf-index-common.c: Revert. * dwarf-index-cache.h: Revert. * dwarf-index-cache.c: Revert. * dummy-frame.c: Revert. * dtrace-probe.c: Revert. * disasm.h: Revert. * disasm.c: Revert. * disasm-selftests.c: Revert. * dictionary.c: Revert. * dicos-tdep.c: Revert. * demangle.c: Revert. * dcache.h: Revert. * dcache.c: Revert. * darwin-nat.h: Revert. * darwin-nat.c: Revert. * darwin-nat-info.c: Revert. * d-valprint.c: Revert. * d-namespace.c: Revert. * d-lang.c: Revert. * ctf.c: Revert. * csky-tdep.c: Revert. * csky-linux-tdep.c: Revert. * cris-tdep.c: Revert. * cris-linux-tdep.c: Revert. * cp-valprint.c: Revert. * cp-support.c: Revert. * cp-namespace.c: Revert. * cp-abi.c: Revert. * corelow.c: Revert. * corefile.c: Revert. * continuations.c: Revert. * completer.h: Revert. * completer.c: Revert. * complaints.c: Revert. * coffread.c: Revert. * coff-pe-read.c: Revert. * cli-out.h: Revert. * cli-out.c: Revert. * charset.c: Revert. * c-varobj.c: Revert. * c-valprint.c: Revert. * c-typeprint.c: Revert. * c-lang.c: Revert. * buildsym.c: Revert. * buildsym-legacy.c: Revert. * build-id.h: Revert. * build-id.c: Revert. * btrace.c: Revert. * bsd-uthread.c: Revert. * breakpoint.h: Revert. * breakpoint.c: Revert. * break-catch-throw.c: Revert. * break-catch-syscall.c: Revert. * break-catch-sig.c: Revert. * blockframe.c: Revert. * block.c: Revert. * bfin-tdep.c: Revert. * bfin-linux-tdep.c: Revert. * bfd-target.c: Revert. * bcache.c: Revert. * ax-general.c: Revert. * ax-gdb.h: Revert. * ax-gdb.c: Revert. * avr-tdep.c: Revert. * auxv.c: Revert. * auto-load.c: Revert. * arm-wince-tdep.c: Revert. * arm-tdep.c: Revert. * arm-symbian-tdep.c: Revert. * arm-pikeos-tdep.c: Revert. * arm-obsd-tdep.c: Revert. * arm-nbsd-tdep.c: Revert. * arm-nbsd-nat.c: Revert. * arm-linux-tdep.c: Revert. * arm-linux-nat.c: Revert. * arm-fbsd-tdep.c: Revert. * arm-fbsd-nat.c: Revert. * arm-bsd-tdep.c: Revert. * arch-utils.c: Revert. * arc-tdep.c: Revert. * arc-newlib-tdep.c: Revert. * annotate.h: Revert. * annotate.c: Revert. * amd64-windows-tdep.c: Revert. * amd64-windows-nat.c: Revert. * amd64-tdep.c: Revert. * amd64-sol2-tdep.c: Revert. * amd64-obsd-tdep.c: Revert. * amd64-obsd-nat.c: Revert. * amd64-nbsd-tdep.c: Revert. * amd64-nbsd-nat.c: Revert. * amd64-nat.c: Revert. * amd64-linux-tdep.c: Revert. * amd64-linux-nat.c: Revert. * amd64-fbsd-tdep.c: Revert. * amd64-fbsd-nat.c: Revert. * amd64-dicos-tdep.c: Revert. * amd64-darwin-tdep.c: Revert. * amd64-bsd-nat.c: Revert. * alpha-tdep.c: Revert. * alpha-obsd-tdep.c: Revert. * alpha-nbsd-tdep.c: Revert. * alpha-mdebug-tdep.c: Revert. * alpha-linux-tdep.c: Revert. * alpha-linux-nat.c: Revert. * alpha-bsd-tdep.c: Revert. * alpha-bsd-nat.c: Revert. * aix-thread.c: Revert. * agent.c: Revert. * addrmap.c: Revert. * ada-varobj.c: Revert. * ada-valprint.c: Revert. * ada-typeprint.c: Revert. * ada-tasks.c: Revert. * ada-lang.c: Revert. * aarch64-tdep.c: Revert. * aarch64-ravenscar-thread.c: Revert. * aarch64-newlib-tdep.c: Revert. * aarch64-linux-tdep.c: Revert. * aarch64-linux-nat.c: Revert. * aarch64-fbsd-tdep.c: Revert. * aarch64-fbsd-nat.c: Revert. * aarch32-linux-nat.c: Revert.
143 lines
4.1 KiB
C
143 lines
4.1 KiB
C
/* Native-dependent code for OpenBSD/amd64.
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Copyright (C) 2003-2019 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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#include "defs.h"
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#include "gdbcore.h"
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#include "regcache.h"
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#include "target.h"
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#include "amd64-tdep.h"
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#include "amd64-bsd-nat.h"
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#include "amd64-nat.h"
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#include "obsd-nat.h"
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/* Mapping between the general-purpose registers in OpenBSD/amd64
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`struct reg' format and GDB's register cache layout for
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OpenBSD/i386.
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Note that most (if not all) OpenBSD/amd64 registers are 64-bit,
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while the OpenBSD/i386 registers are all 32-bit, but since we're
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little-endian we get away with that. */
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/* From <machine/reg.h>. */
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static int amd64obsd32_r_reg_offset[] =
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{
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14 * 8, /* %eax */
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3 * 8, /* %ecx */
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2 * 8, /* %edx */
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13 * 8, /* %ebx */
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15 * 8, /* %esp */
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12 * 8, /* %ebp */
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1 * 8, /* %esi */
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0 * 8, /* %edi */
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16 * 8, /* %eip */
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17 * 8, /* %eflags */
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18 * 8, /* %cs */
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19 * 8, /* %ss */
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20 * 8, /* %ds */
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21 * 8, /* %es */
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22 * 8, /* %fs */
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23 * 8 /* %gs */
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};
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/* Support for debugging kernel virtual memory images. */
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#include <sys/types.h>
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#include <machine/frame.h>
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#include <machine/pcb.h>
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#include "bsd-kvm.h"
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static int
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amd64obsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
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{
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struct switchframe sf;
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int regnum;
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/* The following is true for OpenBSD 3.5:
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The pcb contains the stack pointer at the point of the context
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switch in cpu_switch(). At that point we have a stack frame as
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described by `struct switchframe', which for OpenBSD 3.5 has the
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following layout:
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interrupt level
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%r15
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%r14
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%r13
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%r12
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%rbp
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%rbx
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return address
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Together with %rsp in the pcb, this accounts for all callee-saved
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registers specified by the psABI. From this information we
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reconstruct the register state as it would look when we just
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returned from cpu_switch().
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For core dumps the pcb is saved by savectx(). In that case the
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stack frame only contains the return address, and there is no way
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to recover the other registers. */
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/* The stack pointer shouldn't be zero. */
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if (pcb->pcb_rsp == 0)
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return 0;
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/* Read the stack frame, and check its validity. */
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read_memory (pcb->pcb_rsp, (gdb_byte *) &sf, sizeof sf);
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if (sf.sf_rbp == pcb->pcb_rbp)
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{
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/* Yes, we have a frame that matches cpu_switch(). */
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pcb->pcb_rsp += sizeof (struct switchframe);
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regcache->raw_supply (12, &sf.sf_r12);
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regcache->raw_supply (13, &sf.sf_r13);
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regcache->raw_supply (14, &sf.sf_r14);
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regcache->raw_supply (15, &sf.sf_r15);
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regcache->raw_supply (AMD64_RBX_REGNUM, &sf.sf_rbx);
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regcache->raw_supply (AMD64_RIP_REGNUM, &sf.sf_rip);
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}
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else
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{
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/* No, the pcb must have been last updated by savectx(). */
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pcb->pcb_rsp += 8;
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regcache->raw_supply (AMD64_RIP_REGNUM, &sf);
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}
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regcache->raw_supply (AMD64_RSP_REGNUM, &pcb->pcb_rsp);
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regcache->raw_supply (AMD64_RBP_REGNUM, &pcb->pcb_rbp);
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return 1;
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}
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static amd64_bsd_nat_target<obsd_nat_target> the_amd64_obsd_nat_target;
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void
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_initialize_amd64obsd_nat (void)
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{
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amd64_native_gregset32_reg_offset = amd64obsd32_r_reg_offset;
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amd64_native_gregset32_num_regs = ARRAY_SIZE (amd64obsd32_r_reg_offset);
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amd64_native_gregset64_reg_offset = amd64obsd_r_reg_offset;
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add_inf_child_target (&the_amd64_obsd_nat_target);
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/* Support debugging kernel virtual memory images. */
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bsd_kvm_add_target (amd64obsd_supply_pcb);
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}
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