/* Native-dependent code for SPARC.
- Copyright (C) 2003-2013 Free Software Foundation, Inc.
+ Copyright (C) 2003-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "regcache.h"
#include "target.h"
-#include "gdb_assert.h"
#include <signal.h>
-#include <string.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_gregset *sparc_gregset;
-const struct sparc_fpregset *sparc_fpregset;
-void (*sparc_supply_gregset) (const struct sparc_gregset *,
+const struct sparc_gregmap *sparc_gregmap;
+const struct sparc_fpregmap *sparc_fpregmap;
+void (*sparc_supply_gregset) (const struct sparc_gregmap *,
struct regcache *, int , const void *);
-void (*sparc_collect_gregset) (const struct sparc_gregset *,
+void (*sparc_collect_gregset) (const struct sparc_gregmap *,
const struct regcache *, int, void *);
-void (*sparc_supply_fpregset) (const struct sparc_fpregset *,
+void (*sparc_supply_fpregset) (const struct sparc_fpregmap *,
struct regcache *, int , const void *);
-void (*sparc_collect_fpregset) (const struct sparc_fpregset *,
+void (*sparc_collect_fpregset) (const struct sparc_fpregmap *,
const struct regcache *, int , void *);
int (*sparc_gregset_supplies_p) (struct gdbarch *, int);
int (*sparc_fpregset_supplies_p) (struct gdbarch *, int);
for all registers (including the floating-point registers). */
void
-sparc_fetch_inferior_registers (struct target_ops *ops,
- struct regcache *regcache, int regnum)
+sparc_fetch_inferior_registers (struct regcache *regcache, int regnum)
{
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
- int 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 = ptid_get_lwp (inferior_ptid);
- if (pid == 0)
- pid = ptid_get_pid (inferior_ptid);
+ struct gdbarch *gdbarch = regcache->arch ();
+ ptid_t ptid = regcache->ptid ();
if (regnum == SPARC_G0_REGNUM)
{
gdb_byte zero[8] = { 0 };
- regcache_raw_supply (regcache, SPARC_G0_REGNUM, &zero);
+ regcache->raw_supply (SPARC_G0_REGNUM, &zero);
return;
}
{
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_supply_gregset (sparc_gregset, regcache, -1, ®s);
+ 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_fpregset, regcache, -1, &fpregs);
+ sparc_supply_fpregset (sparc_fpregmap, regcache, -1, &fpregs);
}
}
void
-sparc_store_inferior_registers (struct target_ops *ops,
- struct regcache *regcache, int regnum)
+sparc_store_inferior_registers (struct regcache *regcache, int regnum)
{
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
- int pid;
-
- /* NOTE: cagney/2002-12-02: See comment in fetch_inferior_registers
- about threaded assumptions. */
- pid = ptid_get_lwp (inferior_ptid);
- if (pid == 0)
- pid = ptid_get_pid (inferior_ptid);
+ struct gdbarch *gdbarch = regcache->arch ();
+ 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_gregset, regcache, regnum, ®s);
+ 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. */
{
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));
- sparc_collect_fpregset (sparc_fpregset, regcache, regnum, &fpregs);
+ sparc_collect_fpregset (sparc_fpregmap, regcache, regnum, &fpregs);
/* Writing the floating-point registers will fail on NetBSD with
EINVAL if the inferior process doesn't have an FPU state
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"));
}
}
\f
-/* Fetch StackGhost Per-Process XOR cookie. */
+/* Implement the to_xfer_partial target_ops method for
+ TARGET_OBJECT_WCOOKIE. Fetch StackGhost Per-Process XOR cookie. */
-static LONGEST
-sparc_xfer_wcookie (struct target_ops *ops, enum target_object object,
+enum target_xfer_status
+sparc_xfer_wcookie (enum target_object object,
const char *annex, gdb_byte *readbuf,
- const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
+ const gdb_byte *writebuf, ULONGEST offset, ULONGEST len,
+ ULONGEST *xfered_len)
{
unsigned long wcookie = 0;
char *buf = (char *)&wcookie;
gdb_assert (readbuf && writebuf == NULL);
if (offset == sizeof (unsigned long))
- return 0; /* Signal EOF. */
+ return TARGET_XFER_EOF; /* Signal EOF. */
if (offset > sizeof (unsigned long))
- return -1;
+ return TARGET_XFER_E_IO;
#ifdef PT_WCOOKIE
/* If PT_WCOOKIE is defined (by <sys/ptrace.h>), assume we're
later). Since release 3.6, OpenBSD uses a fully randomized
cookie. */
{
- int pid;
-
- pid = ptid_get_lwp (inferior_ptid);
- if (pid == 0)
- 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
len = sizeof (unsigned long) - offset;
memcpy (readbuf, buf + offset, len);
- return len;
+ *xfered_len = (ULONGEST) len;
+ return TARGET_XFER_OK;
}
-
-LONGEST (*inf_ptrace_xfer_partial) (struct target_ops *, enum target_object,
- const char *, gdb_byte *, const gdb_byte *,
- ULONGEST, LONGEST);
-
-static LONGEST
-sparc_xfer_partial (struct target_ops *ops, enum target_object object,
- const char *annex, gdb_byte *readbuf,
- const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
-{
- if (object == TARGET_OBJECT_WCOOKIE)
- return sparc_xfer_wcookie (ops, object, annex, readbuf, writebuf,
- offset, len);
-
- return inf_ptrace_xfer_partial (ops, object, annex, readbuf, writebuf,
- offset, len);
-}
-\f
-/* Create a prototype generic SPARC target. The client can override
- it with local methods. */
-
-struct target_ops *
-sparc_target (void)
-{
- struct target_ops *t;
-
- t = inf_ptrace_target ();
- t->to_fetch_registers = sparc_fetch_inferior_registers;
- t->to_store_registers = sparc_store_inferior_registers;
- inf_ptrace_xfer_partial = t->to_xfer_partial;
- t->to_xfer_partial = sparc_xfer_partial;
- return t;
-}
-
\f
-/* Provide a prototype to silence -Wmissing-prototypes. */
-void _initialize_sparc_nat (void);
+void _initialize_sparc_nat ();
void
-_initialize_sparc_nat (void)
+_initialize_sparc_nat ()
{
- /* Deafult to using SunOS 4 register sets. */
- if (sparc_gregset == NULL)
- sparc_gregset = &sparc32_sunos4_gregset;
- if (sparc_fpregset == NULL)
- sparc_fpregset = &sparc32_sunos4_fpregset;
+ /* Default to using SunOS 4 register sets. */
+ if (sparc_gregmap == NULL)
+ sparc_gregmap = &sparc32_sunos4_gregmap;
+ if (sparc_fpregmap == NULL)
+ sparc_fpregmap = &sparc32_sunos4_fpregmap;
if (sparc_supply_gregset == NULL)
sparc_supply_gregset = sparc32_supply_gregset;
if (sparc_collect_gregset == NULL)
projects / deliverable / binutils-gdb.git / blobdiff