/* Native-dependent code for modern i386 BSD's.
- Copyright (C) 2000-2017 Free Software Foundation, Inc.
+ Copyright (C) 2000-2021 Free Software Foundation, Inc.
This file is part of GDB.
#include "inf-ptrace.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
+}
+
/* In older BSD versions we cannot get at some of the segment
registers. FreeBSD for example didn't support the %fs and %gs
registers until the 3.0 release. We have autoconf checks for their
int offset = i386bsd_r_reg_offset[regnum];
if (offset != -1)
- regcache_raw_supply (regcache, regnum, regs + offset);
+ regcache->raw_supply (regnum, regs + offset);
}
}
int offset = i386bsd_r_reg_offset[i];
if (offset != -1)
- regcache_raw_collect (regcache, i, regs + offset);
+ regcache->raw_collect (i, regs + offset);
}
}
}
/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
for all registers (including the floating point registers). */
-static void
-i386bsd_fetch_inferior_registers (struct target_ops *ops,
- struct regcache *regcache, int regnum)
+void
+i386bsd_fetch_inferior_registers (struct regcache *regcache, int regnum)
{
- pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache));
+ ptid_t ptid = regcache->ptid ();
if (regnum == -1 || GETREGS_SUPPLIES (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"));
i386bsd_supply_gregset (regcache, ®s);
return;
}
+#ifdef PT_GETFSBASE
+ if (regnum == -1 || regnum == I386_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 (I386_FSBASE_REGNUM, &base);
+ if (regnum != -1)
+ return;
+ }
+#endif
+#ifdef PT_GETGSBASE
+ if (regnum == -1 || regnum == I386_GSBASE_REGNUM)
+ {
+ 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 (I386_GSBASE_REGNUM, &base);
+ if (regnum != -1)
+ return;
+ }
+#endif
+
if (regnum == -1 || regnum >= I386_ST0_REGNUM)
{
struct fpreg fpregs;
void *xstateregs;
xstateregs = alloca (x86bsd_xsave_len);
- if (ptrace (PT_GETXSTATE, pid,
- (PTRACE_TYPE_ARG3) xstateregs, 0) == -1)
+ if (gdb_ptrace (PT_GETXSTATE, ptid,
+ (PTRACE_TYPE_ARG3) xstateregs, 0) == -1)
perror_with_name (_("Couldn't get extended state status"));
i387_supply_xsave (regcache, -1, xstateregs);
#ifdef HAVE_PT_GETXMMREGS
if (have_ptrace_xmmregs != 0
- && ptrace(PT_GETXMMREGS, pid, (PTRACE_TYPE_ARG3) xmmregs, 0) == 0)
+ && gdb_ptrace(PT_GETXMMREGS, ptid,
+ (PTRACE_TYPE_ARG3) xmmregs, 0) == 0)
{
have_ptrace_xmmregs = 1;
i387_supply_fxsave (regcache, -1, xmmregs);
{
have_ptrace_xmmregs = 0;
#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"));
i387_supply_fsave (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
-i386bsd_store_inferior_registers (struct target_ops *ops,
- struct regcache *regcache, int regnum)
+void
+i386bsd_store_inferior_registers (struct regcache *regcache, int regnum)
{
- pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache));
+ ptid_t ptid = regcache->ptid ();
if (regnum == -1 || GETREGS_SUPPLIES (regnum))
{
struct reg regs;
- if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
- perror_with_name (_("Couldn't get registers"));
+ if (gdb_ptrace (PT_GETREGS, ptid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
+ perror_with_name (_("Couldn't get registers"));
i386bsd_collect_gregset (regcache, ®s, regnum);
- if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
- perror_with_name (_("Couldn't write registers"));
+ 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 == I386_FSBASE_REGNUM)
+ {
+ register_t base;
+
+ regcache->raw_collect (I386_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 == I386_GSBASE_REGNUM)
+ {
+ register_t base;
+
+ regcache->raw_collect (I386_GSBASE_REGNUM, &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 || regnum >= I386_ST0_REGNUM)
{
struct fpreg fpregs;
void *xstateregs;
xstateregs = alloca (x86bsd_xsave_len);
- if (ptrace (PT_GETXSTATE, pid,
- (PTRACE_TYPE_ARG3) xstateregs, 0) == -1)
+ if (gdb_ptrace (PT_GETXSTATE, ptid,
+ (PTRACE_TYPE_ARG3) xstateregs, 0) == -1)
perror_with_name (_("Couldn't get extended state status"));
i387_collect_xsave (regcache, -1, 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;
}
#ifdef HAVE_PT_GETXMMREGS
if (have_ptrace_xmmregs != 0
- && ptrace(PT_GETXMMREGS, pid, (PTRACE_TYPE_ARG3) xmmregs, 0) == 0)
+ && gdb_ptrace(PT_GETXMMREGS, ptid,
+ (PTRACE_TYPE_ARG3) xmmregs, 0) == 0)
{
have_ptrace_xmmregs = 1;
i387_collect_fxsave (regcache, regnum, xmmregs);
- if (ptrace (PT_SETXMMREGS, pid, (PTRACE_TYPE_ARG3) xmmregs, 0) == -1)
- perror_with_name (_("Couldn't write XMM registers"));
+ if (gdb_ptrace (PT_SETXMMREGS, ptid,
+ (PTRACE_TYPE_ARG3) xmmregs, 0) == -1)
+ perror_with_name (_("Couldn't write XMM registers"));
}
else
{
have_ptrace_xmmregs = 0;
#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"));
- i387_collect_fsave (regcache, regnum, &fpregs);
+ i387_collect_fsave (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"));
#ifdef HAVE_PT_GETXMMREGS
- }
+ }
#endif
}
}
-/* Create a prototype *BSD/i386 target. The client can override it
- with local methods. */
-
-struct target_ops *
-i386bsd_target (void)
-{
- struct target_ops *t;
-
- t = x86bsd_target ();
- t->to_fetch_registers = i386bsd_fetch_inferior_registers;
- t->to_store_registers = i386bsd_store_inferior_registers;
- return t;
-}
-\f
-
-/* Provide a prototype to silence -Wmissing-prototypes. */
-void _initialize_i386bsd_nat (void);
-
+void _initialize_i386bsd_nat ();
void
-_initialize_i386bsd_nat (void)
+_initialize_i386bsd_nat ()
{
- int offset;
-
/* To support the recognition of signal handlers, i386-bsd-tdep.c
hardcodes some constants. Inclusion of this file means that we
are compiling a native debugger, which means that we can use the
#define SC_REG_OFFSET i386fbsd4_sc_reg_offset
#elif defined (__FreeBSD_version) && __FreeBSD_version >= 300005
#define SC_REG_OFFSET i386fbsd_sc_reg_offset
-#elif defined (NetBSD) || defined (__NetBSD_Version__)
-#define SC_REG_OFFSET i386nbsd_sc_reg_offset
#elif defined (OpenBSD)
#define SC_REG_OFFSET i386obsd_sc_reg_offset
#endif
/* Override the default value for the offset of the program counter
in the sigcontext structure. */
- offset = offsetof (struct sigcontext, sc_pc);
+ int offset = offsetof (struct sigcontext, sc_pc);
if (SC_PC_OFFSET != offset)
{
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