/* SPU native-dependent code for GDB, the GNU debugger.
- Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2006-2019 Free Software Foundation, Inc.
Contributed by Ulrich Weigand <uweigand@de.ibm.com>.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "gdbcore.h"
-#include "gdb_string.h"
#include "target.h"
#include "inferior.h"
+#include "inf-child.h"
#include "inf-ptrace.h"
#include "regcache.h"
#include "symfile.h"
-#include "gdb_wait.h"
-#include "gdb_stdint.h"
+#include "common/gdb_wait.h"
+#include "gdbthread.h"
+#include "gdb_bfd.h"
-#include <sys/ptrace.h>
+#include "nat/gdb_ptrace.h"
#include <asm/ptrace.h>
#include <sys/types.h>
-#include <sys/param.h>
#include "spu-tdep.h"
#define INSTR_SC 0x44000002
#define NR_spu_run 0x0116
+class spu_linux_nat_target final : public inf_ptrace_target
+{
+public:
+ void fetch_registers (struct regcache *regcache, int regnum) override;
+ void store_registers (struct regcache *regcache, int regnum) override;
+
+ void post_attach (int) override;
+ void post_startup_inferior (ptid_t) override;
+
+ ptid_t wait (ptid_t, struct target_waitstatus *, int options) override;
+
+ enum target_xfer_status xfer_partial (enum target_object object,
+ const char *annex,
+ gdb_byte *readbuf,
+ const gdb_byte *writebuf,
+ ULONGEST offset, ULONGEST len,
+ ULONGEST *xfered_len) override;
+
+ int can_use_hw_breakpoint (enum bptype, int, int) override;
+};
+
+static spu_linux_nat_target the_spu_linux_nat_target;
/* Fetch PPU register REGNO. */
static ULONGEST
{
PTRACE_TYPE_RET res;
- int tid = TIDGET (inferior_ptid);
+ int tid = inferior_ptid.lwp ();
if (tid == 0)
- tid = PIDGET (inferior_ptid);
+ tid = inferior_ptid.pid ();
#ifndef __powerpc64__
/* If running as a 32-bit process on a 64-bit system, we attempt
/ sizeof (PTRACE_TYPE_RET));
PTRACE_TYPE_RET *buffer;
- int tid = TIDGET (inferior_ptid);
+ int tid = inferior_ptid.lwp ();
if (tid == 0)
- tid = PIDGET (inferior_ptid);
+ tid = inferior_ptid.pid ();
buffer = (PTRACE_TYPE_RET *) alloca (count * sizeof (PTRACE_TYPE_RET));
for (i = 0; i < count; i++, addr += sizeof (PTRACE_TYPE_RET))
/ sizeof (PTRACE_TYPE_RET));
PTRACE_TYPE_RET *buffer;
- int tid = TIDGET (inferior_ptid);
+ int tid = inferior_ptid.lwp ();
if (tid == 0)
- tid = PIDGET (inferior_ptid);
+ tid = inferior_ptid.pid ();
buffer = (PTRACE_TYPE_RET *) alloca (count * sizeof (PTRACE_TYPE_RET));
static int
parse_spufs_run (int *fd, ULONGEST *addr)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ());
gdb_byte buf[4];
ULONGEST pc = fetch_ppc_register (32); /* nip */
if (fetch_ppc_memory (pc-4, buf, 4) != 0)
return 0;
/* It should be a "sc" instruction. */
- if (extract_unsigned_integer (buf, 4) != INSTR_SC)
+ if (extract_unsigned_integer (buf, 4, byte_order) != INSTR_SC)
return 0;
/* System call number should be NR_spu_run. */
if (fetch_ppc_register (0) != NR_spu_run)
}
-/* Copy LEN bytes at OFFSET in spufs file ANNEX into/from READBUF or WRITEBUF,
+/* Implement the to_xfer_partial target_ops method for TARGET_OBJECT_SPU.
+ Copy LEN bytes at OFFSET in spufs file ANNEX into/from READBUF or WRITEBUF,
using the /proc file system. */
-static LONGEST
+
+static enum target_xfer_status
spu_proc_xfer_spu (const char *annex, gdb_byte *readbuf,
const gdb_byte *writebuf,
- ULONGEST offset, LONGEST len)
+ ULONGEST offset, ULONGEST len, ULONGEST *xfered_len)
{
char buf[128];
int fd = 0;
int ret = -1;
- int pid = PIDGET (inferior_ptid);
+ int pid = inferior_ptid.pid ();
if (!annex)
- return 0;
+ return TARGET_XFER_EOF;
xsnprintf (buf, sizeof buf, "/proc/%d/fd/%s", pid, annex);
fd = open (buf, writebuf? O_WRONLY : O_RDONLY);
if (fd <= 0)
- return -1;
+ return TARGET_XFER_E_IO;
if (offset != 0
&& lseek (fd, (off_t) offset, SEEK_SET) != (off_t) offset)
{
close (fd);
- return -1;
+ return TARGET_XFER_EOF;
}
if (writebuf)
ret = read (fd, readbuf, (size_t) len);
close (fd);
- return ret;
+ if (ret < 0)
+ return TARGET_XFER_E_IO;
+ else if (ret == 0)
+ return TARGET_XFER_EOF;
+ else
+ {
+ *xfered_len = (ULONGEST) ret;
+ return TARGET_XFER_OK;
+ }
}
spu_bfd_iovec_close (struct bfd *nbfd, void *stream)
{
xfree (stream);
- return 1;
+
+ /* Zero means success. */
+ return 0;
}
static file_ptr
{
ULONGEST addr = *(ULONGEST *)stream;
- if (fetch_ppc_memory (addr + offset, buf, nbytes) != 0)
+ if (fetch_ppc_memory (addr + offset, (gdb_byte *)buf, nbytes) != 0)
{
bfd_set_error (bfd_error_invalid_operation);
return -1;
table to find the extent of the last section but that seems
pointless when the size is needed only for checks of other
parsed values in dbxread.c. */
+ memset (sb, 0, sizeof (struct stat));
sb->st_size = INT_MAX;
return 0;
}
-static bfd *
+static gdb_bfd_ref_ptr
spu_bfd_open (ULONGEST addr)
{
- struct bfd *nbfd;
+ asection *spu_name;
- ULONGEST *open_closure = xmalloc (sizeof (ULONGEST));
+ ULONGEST *open_closure = XNEW (ULONGEST);
*open_closure = addr;
- nbfd = bfd_openr_iovec (xstrdup ("<in-memory>"), "elf32-spu",
- spu_bfd_iovec_open, open_closure,
- spu_bfd_iovec_pread, spu_bfd_iovec_close,
- spu_bfd_iovec_stat);
- if (!nbfd)
+ gdb_bfd_ref_ptr nbfd (gdb_bfd_openr_iovec ("<in-memory>", "elf32-spu",
+ spu_bfd_iovec_open, open_closure,
+ spu_bfd_iovec_pread,
+ spu_bfd_iovec_close,
+ spu_bfd_iovec_stat));
+ if (nbfd == NULL)
return NULL;
- if (!bfd_check_format (nbfd, bfd_object))
+ if (!bfd_check_format (nbfd.get (), bfd_object))
+ return NULL;
+
+ /* Retrieve SPU name note and update BFD name. */
+ spu_name = bfd_get_section_by_name (nbfd.get (), ".note.spu_name");
+ if (spu_name)
{
- bfd_close (nbfd);
- return NULL;
+ int sect_size = bfd_section_size (nbfd.get (), spu_name);
+ if (sect_size > 20)
+ {
+ char *buf = (char *)alloca (sect_size - 20 + 1);
+ bfd_get_section_contents (nbfd.get (), spu_name, buf, 20,
+ sect_size - 20);
+ buf[sect_size - 20] = '\0';
+
+ xfree ((char *)nbfd->filename);
+ nbfd->filename = xstrdup (buf);
+ }
}
return nbfd;
spu_symbol_file_add_from_memory (int inferior_fd)
{
ULONGEST addr;
- struct bfd *nbfd;
- char id[128];
+ gdb_byte id[128];
char annex[32];
- int len;
+ ULONGEST len;
+ enum target_xfer_status status;
/* Read object ID. */
xsnprintf (annex, sizeof annex, "%d/object-id", inferior_fd);
- len = spu_proc_xfer_spu (annex, id, NULL, 0, sizeof id);
- if (len <= 0 || len >= sizeof id)
+ status = spu_proc_xfer_spu (annex, id, NULL, 0, sizeof id, &len);
+ if (status != TARGET_XFER_OK || len >= sizeof id)
return;
id[len] = 0;
- addr = strtoulst (id, NULL, 16);
+ addr = strtoulst ((const char *) id, NULL, 16);
if (!addr)
return;
/* Open BFD representing SPE executable and read its symbols. */
- nbfd = spu_bfd_open (addr);
- if (nbfd)
- symbol_file_add_from_bfd (nbfd, 0, NULL, 1, 0);
+ gdb_bfd_ref_ptr nbfd (spu_bfd_open (addr));
+ if (nbfd != NULL)
+ {
+ symbol_file_add_from_bfd (nbfd.get (), bfd_get_filename (nbfd),
+ SYMFILE_VERBOSE | SYMFILE_MAINLINE,
+ NULL, 0, NULL);
+ }
}
/* Override the post_startup_inferior routine to continue running
the inferior until the first spu_run system call. */
-static void
-spu_child_post_startup_inferior (ptid_t ptid)
+void
+spu_linux_nat_target::post_startup_inferior (ptid_t ptid)
{
int fd;
ULONGEST addr;
- int tid = TIDGET (ptid);
+ int tid = ptid.lwp ();
if (tid == 0)
- tid = PIDGET (ptid);
+ tid = ptid.pid ();
while (!parse_spufs_run (&fd, &addr))
{
/* Override the post_attach routine to try load the SPE executable
file image from its copy inside the target process. */
-static void
-spu_child_post_attach (int pid)
+void
+spu_linux_nat_target::post_attach (int pid)
{
int fd;
ULONGEST addr;
/* Wait for child PTID to do something. Return id of the child,
minus_one_ptid in case of error; store status into *OURSTATUS. */
-static ptid_t
-spu_child_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
+ptid_t
+spu_linux_nat_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus,
+ int options)
{
int save_errno;
int status;
{
set_sigint_trap (); /* Causes SIGINT to be passed on to the
attached process. */
- set_sigio_trap ();
- pid = waitpid (PIDGET (ptid), &status, 0);
+ pid = waitpid (ptid.pid (), &status, 0);
if (pid == -1 && errno == ECHILD)
/* Try again with __WCLONE to check cloned processes. */
- pid = waitpid (PIDGET (ptid), &status, __WCLONE);
+ pid = waitpid (ptid.pid (), &status, __WCLONE);
save_errno = errno;
/* Make sure we don't report an event for the exit of the
original program, if we've detached from it. */
- if (pid != -1 && !WIFSTOPPED (status) && pid != PIDGET (inferior_ptid))
+ if (pid != -1 && !WIFSTOPPED (status)
+ && pid != inferior_ptid.pid ())
{
pid = -1;
save_errno = EINTR;
}
- clear_sigio_trap ();
clear_sigint_trap ();
}
while (pid == -1 && save_errno == EINTR);
/* Claim it exited with unknown signal. */
ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
- ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
- return minus_one_ptid;
+ ourstatus->value.sig = GDB_SIGNAL_UNKNOWN;
+ return inferior_ptid;
}
store_waitstatus (ourstatus, status);
- return pid_to_ptid (pid);
+ return ptid_t (pid);
}
/* Override the fetch_inferior_register routine. */
-static void
-spu_fetch_inferior_registers (struct regcache *regcache, int regno)
+void
+spu_linux_nat_target::fetch_registers (struct regcache *regcache, int regno)
{
int fd;
ULONGEST addr;
+ /* Since we use functions that rely on inferior_ptid, we need to set and
+ restore it. */
+ scoped_restore save_ptid
+ = make_scoped_restore (&inferior_ptid, regcache->ptid ());
+
/* We must be stopped on a spu_run system call. */
if (!parse_spufs_run (&fd, &addr))
return;
/* The ID register holds the spufs file handle. */
if (regno == -1 || regno == SPU_ID_REGNUM)
{
- char buf[4];
- store_unsigned_integer (buf, 4, fd);
- regcache_raw_supply (regcache, SPU_ID_REGNUM, buf);
+ struct gdbarch *gdbarch = regcache->arch ();
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ gdb_byte buf[4];
+ store_unsigned_integer (buf, 4, byte_order, fd);
+ regcache->raw_supply (SPU_ID_REGNUM, buf);
}
/* The NPC register is found at ADDR. */
{
gdb_byte buf[4];
if (fetch_ppc_memory (addr, buf, 4) == 0)
- regcache_raw_supply (regcache, SPU_PC_REGNUM, buf);
+ regcache->raw_supply (SPU_PC_REGNUM, buf);
}
/* The GPRs are found in the "regs" spufs file. */
gdb_byte buf[16 * SPU_NUM_GPRS];
char annex[32];
int i;
+ ULONGEST len;
xsnprintf (annex, sizeof annex, "%d/regs", fd);
- if (spu_proc_xfer_spu (annex, buf, NULL, 0, sizeof buf) == sizeof buf)
+ if ((spu_proc_xfer_spu (annex, buf, NULL, 0, sizeof buf, &len)
+ == TARGET_XFER_OK)
+ && len == sizeof buf)
for (i = 0; i < SPU_NUM_GPRS; i++)
- regcache_raw_supply (regcache, i, buf + i*16);
+ regcache->raw_supply (i, buf + i*16);
}
}
/* Override the store_inferior_register routine. */
-static void
-spu_store_inferior_registers (struct regcache *regcache, int regno)
+void
+spu_linux_nat_target::store_registers (struct regcache *regcache, int regno)
{
int fd;
ULONGEST addr;
+ /* Since we use functions that rely on inferior_ptid, we need to set and
+ restore it. */
+ scoped_restore save_ptid
+ = make_scoped_restore (&inferior_ptid, regcache->ptid ());
+
/* We must be stopped on a spu_run system call. */
if (!parse_spufs_run (&fd, &addr))
return;
if (regno == -1 || regno == SPU_PC_REGNUM)
{
gdb_byte buf[4];
- regcache_raw_collect (regcache, SPU_PC_REGNUM, buf);
+ regcache->raw_collect (SPU_PC_REGNUM, buf);
store_ppc_memory (addr, buf, 4);
}
gdb_byte buf[16 * SPU_NUM_GPRS];
char annex[32];
int i;
+ ULONGEST len;
for (i = 0; i < SPU_NUM_GPRS; i++)
- regcache_raw_collect (regcache, i, buf + i*16);
+ regcache->raw_collect (i, buf + i*16);
xsnprintf (annex, sizeof annex, "%d/regs", fd);
- spu_proc_xfer_spu (annex, NULL, buf, 0, sizeof buf);
+ spu_proc_xfer_spu (annex, NULL, buf, 0, sizeof buf, &len);
}
}
/* Override the to_xfer_partial routine. */
-static LONGEST
-spu_xfer_partial (struct target_ops *ops,
- enum target_object object, const char *annex,
- gdb_byte *readbuf, const gdb_byte *writebuf,
- ULONGEST offset, LONGEST len)
+enum target_xfer_status
+spu_linux_nat_target::xfer_partial (enum target_object object, const char *annex,
+ gdb_byte *readbuf, const gdb_byte *writebuf,
+ ULONGEST offset, ULONGEST len,
+ ULONGEST *xfered_len)
{
+ if (object == TARGET_OBJECT_SPU)
+ return spu_proc_xfer_spu (annex, readbuf, writebuf, offset, len,
+ xfered_len);
+
if (object == TARGET_OBJECT_MEMORY)
{
int fd;
ULONGEST addr;
- char mem_annex[32];
+ char mem_annex[32], lslr_annex[32];
+ gdb_byte buf[32];
+ ULONGEST lslr;
+ enum target_xfer_status ret;
/* We must be stopped on a spu_run system call. */
if (!parse_spufs_run (&fd, &addr))
- return 0;
+ return TARGET_XFER_EOF;
/* Use the "mem" spufs file to access SPU local store. */
xsnprintf (mem_annex, sizeof mem_annex, "%d/mem", fd);
- return spu_proc_xfer_spu (mem_annex, readbuf, writebuf, offset, len);
+ ret = spu_proc_xfer_spu (mem_annex, readbuf, writebuf, offset, len,
+ xfered_len);
+ if (ret == TARGET_XFER_OK)
+ return ret;
+
+ /* SPU local store access wraps the address around at the
+ local store limit. We emulate this here. To avoid needing
+ an extra access to retrieve the LSLR, we only do that after
+ trying the original address first, and getting end-of-file. */
+ xsnprintf (lslr_annex, sizeof lslr_annex, "%d/lslr", fd);
+ memset (buf, 0, sizeof buf);
+ if (spu_proc_xfer_spu (lslr_annex, buf, NULL, 0, sizeof buf, xfered_len)
+ != TARGET_XFER_OK)
+ return ret;
+
+ lslr = strtoulst ((const char *) buf, NULL, 16);
+ return spu_proc_xfer_spu (mem_annex, readbuf, writebuf,
+ offset & lslr, len, xfered_len);
}
- return -1;
+ return TARGET_XFER_E_IO;
}
/* Override the to_can_use_hw_breakpoint routine. */
-static int
-spu_can_use_hw_breakpoint (int type, int cnt, int othertype)
+int
+spu_linux_nat_target::can_use_hw_breakpoint (enum bptype type,
+ int cnt, int othertype)
{
return 0;
}
-
/* Initialize SPU native target. */
void
_initialize_spu_nat (void)
{
- /* Generic ptrace methods. */
- struct target_ops *t;
- t = inf_ptrace_target ();
-
- /* Add SPU methods. */
- t->to_post_attach = spu_child_post_attach;
- t->to_post_startup_inferior = spu_child_post_startup_inferior;
- t->to_wait = spu_child_wait;
- t->to_fetch_registers = spu_fetch_inferior_registers;
- t->to_store_registers = spu_store_inferior_registers;
- t->to_xfer_partial = spu_xfer_partial;
- t->to_can_use_hw_breakpoint = spu_can_use_hw_breakpoint;
-
- /* Register SPU target. */
- add_target (t);
+ add_inf_child_target (&the_spu_linux_nat_target);
}
-
projects / deliverable / binutils-gdb.git / blobdiff