/* Native-dependent code for AMD64 BSD's.
- Copyright (C) 2003-2017 Free Software Foundation, Inc.
+ Copyright (C) 2003-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "amd64-nat.h"
#include "x86-bsd-nat.h"
#include "inf-ptrace.h"
+#include "amd64-bsd-nat.h"
\f
+static PTRACE_TYPE_RET
+gdb_ptrace (PTRACE_TYPE_ARG1 request, ptid_t ptid, PTRACE_TYPE_ARG3 addr,
+ PTRACE_TYPE_ARG4 data)
+{
+#ifdef __NetBSD__
+ gdb_assert (data == 0);
+ /* Support for NetBSD threads: unlike other ptrace implementations in this
+ file, NetBSD requires that we pass both the pid and lwp. */
+ return ptrace (request, ptid.pid (), addr, ptid.lwp ());
+#else
+ pid_t pid = get_ptrace_pid (ptid);
+ return ptrace (request, pid, addr, data);
+#endif
+}
+
/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
for all registers (including the floating-point registers). */
-static void
-amd64bsd_fetch_inferior_registers (struct target_ops *ops,
- struct regcache *regcache, int regnum)
+void
+amd64bsd_fetch_inferior_registers (struct regcache *regcache, int regnum)
{
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
- pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache));
+ struct gdbarch *gdbarch = regcache->arch ();
+ ptid_t ptid = regcache->ptid ();
+#if defined(PT_GETFSBASE) || defined(PT_GETGSBASE)
+ const struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+#endif
if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum))
{
struct reg regs;
- if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
+ if (gdb_ptrace (PT_GETREGS, ptid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
perror_with_name (_("Couldn't get registers"));
amd64_supply_native_gregset (regcache, ®s, -1);
return;
}
+#ifdef PT_GETFSBASE
+ if (regnum == -1 || regnum == tdep->fsbase_regnum)
+ {
+ register_t base;
+
+ if (gdb_ptrace (PT_GETFSBASE, ptid, (PTRACE_TYPE_ARG3) &base, 0) == -1)
+ perror_with_name (_("Couldn't get segment register fs_base"));
+
+ regcache->raw_supply (tdep->fsbase_regnum, &base);
+ if (regnum != -1)
+ return;
+ }
+#endif
+#ifdef PT_GETGSBASE
+ if (regnum == -1 || regnum == tdep->fsbase_regnum + 1)
+ {
+ register_t base;
+
+ if (gdb_ptrace (PT_GETGSBASE, ptid, (PTRACE_TYPE_ARG3) &base, 0) == -1)
+ perror_with_name (_("Couldn't get segment register gs_base"));
+
+ regcache->raw_supply (tdep->fsbase_regnum + 1, &base);
+ if (regnum != -1)
+ return;
+ }
+#endif
+
if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum))
{
struct fpreg fpregs;
if (x86bsd_xsave_len != 0)
{
xstateregs = alloca (x86bsd_xsave_len);
- if (ptrace (PT_GETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, 0)
+ if (gdb_ptrace (PT_GETXSTATE, ptid, (PTRACE_TYPE_ARG3) xstateregs, 0)
== -1)
perror_with_name (_("Couldn't get extended state status"));
}
#endif
- if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+ if (gdb_ptrace (PT_GETFPREGS, ptid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't get floating point status"));
amd64_supply_fxsave (regcache, -1, &fpregs);
/* Store register REGNUM back into the inferior. If REGNUM is -1, do
this for all registers (including the floating-point registers). */
-static void
-amd64bsd_store_inferior_registers (struct target_ops *ops,
- struct regcache *regcache, int regnum)
+void
+amd64bsd_store_inferior_registers (struct regcache *regcache, int regnum)
{
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
- pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache));
+ struct gdbarch *gdbarch = regcache->arch ();
+ ptid_t ptid = regcache->ptid ();
+#if defined(PT_SETFSBASE) || defined(PT_SETGSBASE)
+ const struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+#endif
if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum))
{
struct reg regs;
- if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
+ if (gdb_ptrace (PT_GETREGS, ptid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
perror_with_name (_("Couldn't get registers"));
amd64_collect_native_gregset (regcache, ®s, regnum);
- if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
+ if (gdb_ptrace (PT_SETREGS, ptid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
perror_with_name (_("Couldn't write registers"));
if (regnum != -1)
return;
}
+#ifdef PT_SETFSBASE
+ if (regnum == -1 || regnum == tdep->fsbase_regnum)
+ {
+ register_t base;
+
+ /* Clear the full base value to support 32-bit targets. */
+ base = 0;
+ regcache->raw_collect (tdep->fsbase_regnum, &base);
+
+ if (gdb_ptrace (PT_SETFSBASE, ptid, (PTRACE_TYPE_ARG3) &base, 0) == -1)
+ perror_with_name (_("Couldn't write segment register fs_base"));
+ if (regnum != -1)
+ return;
+ }
+#endif
+#ifdef PT_SETGSBASE
+ if (regnum == -1 || regnum == tdep->fsbase_regnum + 1)
+ {
+ register_t base;
+
+ /* Clear the full base value to support 32-bit targets. */
+ base = 0;
+ regcache->raw_collect (tdep->fsbase_regnum + 1, &base);
+
+ if (gdb_ptrace (PT_SETGSBASE, ptid, (PTRACE_TYPE_ARG3) &base, 0) == -1)
+ perror_with_name (_("Couldn't write segment register gs_base"));
+ if (regnum != -1)
+ return;
+ }
+#endif
+
if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum))
{
struct fpreg fpregs;
if (x86bsd_xsave_len != 0)
{
xstateregs = alloca (x86bsd_xsave_len);
- if (ptrace (PT_GETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, 0)
+ if (gdb_ptrace (PT_GETXSTATE, ptid, (PTRACE_TYPE_ARG3) xstateregs, 0)
== -1)
perror_with_name (_("Couldn't get extended state status"));
amd64_collect_xsave (regcache, regnum, xstateregs, 0);
- if (ptrace (PT_SETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs,
- x86bsd_xsave_len) == -1)
+ if (gdb_ptrace (PT_SETXSTATE, ptid, (PTRACE_TYPE_ARG3) xstateregs,
+ x86bsd_xsave_len) == -1)
perror_with_name (_("Couldn't write extended state status"));
return;
}
#endif
- if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+ if (gdb_ptrace (PT_GETFPREGS, ptid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't get floating point status"));
amd64_collect_fxsave (regcache, regnum, &fpregs);
- if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+ if (gdb_ptrace (PT_SETFPREGS, ptid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't write floating point status"));
}
}
-
-/* Create a prototype *BSD/amd64 target. The client can override it
- with local methods. */
-
-struct target_ops *
-amd64bsd_target (void)
-{
- struct target_ops *t;
-
- t = x86bsd_target ();
- t->to_fetch_registers = amd64bsd_fetch_inferior_registers;
- t->to_store_registers = amd64bsd_store_inferior_registers;
- return t;
-}
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