/* Native-dependent code for SPARC.
- Copyright (C) 2003-2018 Free Software Foundation, Inc.
+ Copyright (C) 2003-2021 Free Software Foundation, Inc.
This file is part of GDB.
#include <signal.h>
#include <sys/ptrace.h>
-#include "gdb_wait.h"
+#include "gdbsupport/gdb_wait.h"
#ifdef HAVE_MACHINE_REG_H
#include <machine/reg.h>
#endif
#define PTRACE_SETFPREGS PT_SETFPREGS
#endif
+static PTRACE_TYPE_RET
+gdb_ptrace (PTRACE_TYPE_ARG1 request, ptid_t ptid, PTRACE_TYPE_ARG3 addr)
+{
+#ifdef __NetBSD__
+ /* 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, 0);
+#endif
+}
+
/* Register set description. */
const struct sparc_gregmap *sparc_gregmap;
const struct sparc_fpregmap *sparc_fpregmap;
for all registers (including the floating-point registers). */
void
-sparc_fetch_inferior_registers (struct regcache *regcache, int regnum)
+sparc_fetch_inferior_registers (process_stratum_target *proc_target,
+ regcache *regcache, int regnum)
{
struct gdbarch *gdbarch = regcache->arch ();
- pid_t pid;
-
- /* NOTE: cagney/2002-12-03: This code assumes that the currently
- selected light weight processes' registers can be written
- directly into the selected thread's register cache. This works
- fine when given an 1:1 LWP:thread model (such as found on
- GNU/Linux) but will, likely, have problems when used on an N:1
- (userland threads) or N:M (userland multiple LWP) model. In the
- case of the latter two, the LWP's registers do not necessarily
- belong to the selected thread (the LWP could be in the middle of
- executing the thread switch code).
-
- These functions should instead be paramaterized with an explicit
- object (struct regcache, struct thread_info?) into which the LWPs
- registers can be written. */
- pid = get_ptrace_pid (regcache->ptid ());
+ ptid_t ptid = regcache->ptid ();
if (regnum == SPARC_G0_REGNUM)
{
{
gregset_t regs;
- if (ptrace (PTRACE_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
+ if (gdb_ptrace (PTRACE_GETREGS, ptid, (PTRACE_TYPE_ARG3) ®s) == -1)
perror_with_name (_("Couldn't get registers"));
+ /* Deep down, sparc_supply_rwindow reads memory, so needs the global
+ thread context to be set. */
+ thread_info *thread = find_thread_ptid (proc_target, ptid);
+ scoped_restore_current_thread restore_thread;
+ switch_to_thread (thread);
+
sparc_supply_gregset (sparc_gregmap, regcache, -1, ®s);
if (regnum != -1)
return;
{
fpregset_t fpregs;
- if (ptrace (PTRACE_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+ if (gdb_ptrace (PTRACE_GETFPREGS, ptid, (PTRACE_TYPE_ARG3) &fpregs) == -1)
perror_with_name (_("Couldn't get floating point status"));
sparc_supply_fpregset (sparc_fpregmap, regcache, -1, &fpregs);
}
void
-sparc_store_inferior_registers (struct regcache *regcache, int regnum)
+sparc_store_inferior_registers (process_stratum_target *proc_target,
+ regcache *regcache, int regnum)
{
struct gdbarch *gdbarch = regcache->arch ();
- pid_t pid;
-
- /* NOTE: cagney/2002-12-02: See comment in fetch_inferior_registers
- about threaded assumptions. */
- pid = get_ptrace_pid (regcache->ptid ());
+ ptid_t ptid = regcache->ptid ();
if (regnum == -1 || sparc_gregset_supplies_p (gdbarch, regnum))
{
gregset_t regs;
- if (ptrace (PTRACE_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
+ if (gdb_ptrace (PTRACE_GETREGS, ptid, (PTRACE_TYPE_ARG3) ®s) == -1)
perror_with_name (_("Couldn't get registers"));
sparc_collect_gregset (sparc_gregmap, regcache, regnum, ®s);
- if (ptrace (PTRACE_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
+ if (gdb_ptrace (PTRACE_SETREGS, ptid, (PTRACE_TYPE_ARG3) ®s) == -1)
perror_with_name (_("Couldn't write registers"));
/* Deal with the stack regs. */
ULONGEST sp;
regcache_cooked_read_unsigned (regcache, SPARC_SP_REGNUM, &sp);
+
+ /* Deep down, sparc_collect_rwindow writes memory, so needs the global
+ thread context to be set. */
+ thread_info *thread = find_thread_ptid (proc_target, ptid);
+ scoped_restore_current_thread restore_thread;
+ switch_to_thread (thread);
+
sparc_collect_rwindow (regcache, sp, regnum);
}
{
fpregset_t fpregs, saved_fpregs;
- if (ptrace (PTRACE_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+ if (gdb_ptrace (PTRACE_GETFPREGS, ptid, (PTRACE_TYPE_ARG3) &fpregs) == -1)
perror_with_name (_("Couldn't get floating-point registers"));
memcpy (&saved_fpregs, &fpregs, sizeof (fpregs));
to write the registers if nothing changed. */
if (memcmp (&saved_fpregs, &fpregs, sizeof (fpregs)) != 0)
{
- if (ptrace (PTRACE_SETFPREGS, pid,
- (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+ if (gdb_ptrace (PTRACE_SETFPREGS, ptid,
+ (PTRACE_TYPE_ARG3) &fpregs) == -1)
perror_with_name (_("Couldn't write floating-point registers"));
}
TARGET_OBJECT_WCOOKIE. Fetch StackGhost Per-Process XOR cookie. */
enum target_xfer_status
-sparc_xfer_wcookie (struct target_ops *ops, enum target_object object,
+sparc_xfer_wcookie (enum target_object object,
const char *annex, gdb_byte *readbuf,
const gdb_byte *writebuf, ULONGEST offset, ULONGEST len,
ULONGEST *xfered_len)
later). Since release 3.6, OpenBSD uses a fully randomized
cookie. */
{
- int pid = ptid_get_pid (inferior_ptid);
+ int pid = inferior_ptid.pid ();
/* Sanity check. The proper type for a cookie is register_t, but
we can't assume that this type exists on all systems supported
}
\f
+void _initialize_sparc_nat ();
void
-_initialize_sparc_nat (void)
+_initialize_sparc_nat ()
{
- /* Deafult to using SunOS 4 register sets. */
+ /* Default to using SunOS 4 register sets. */
if (sparc_gregmap == NULL)
sparc_gregmap = &sparc32_sunos4_gregmap;
if (sparc_fpregmap == NULL)
projects / deliverable / binutils-gdb.git / blobdiff