/* Cell SPU GNU/Linux multi-architecture debugging support.
- Copyright (C) 2009 Free Software Foundation, Inc.
+ Copyright (C) 2009-2016 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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "gdbcore.h"
#include "gdbcmd.h"
-#include "gdb_string.h"
-#include "gdb_assert.h"
#include "arch-utils.h"
#include "observer.h"
#include "inferior.h"
static int
parse_spufs_run (ptid_t ptid, int *fd, CORE_ADDR *addr)
{
- enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch);
+ enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ());
+ struct cleanup *old_chain;
struct gdbarch_tdep *tdep;
struct regcache *regcache;
- char buf[4];
- CORE_ADDR pc;
+ gdb_byte buf[4];
ULONGEST regval;
/* If we're not on PPU, there's nothing to detect. */
- if (gdbarch_bfd_arch_info (target_gdbarch)->arch != bfd_arch_powerpc)
+ if (gdbarch_bfd_arch_info (target_gdbarch ())->arch != bfd_arch_powerpc)
+ return 0;
+
+ /* If we're called too early (e.g. after fork), we cannot
+ access the inferior yet. */
+ if (find_inferior_ptid (ptid) == NULL)
return 0;
/* Get PPU-side registers. */
- regcache = get_thread_arch_regcache (ptid, target_gdbarch);
- tdep = gdbarch_tdep (target_gdbarch);
+ regcache = get_thread_arch_regcache (ptid, target_gdbarch ());
+ tdep = gdbarch_tdep (target_gdbarch ());
/* Fetch instruction preceding current NIP. */
- if (target_read_memory (regcache_read_pc (regcache) - 4, buf, 4) != 0)
+ old_chain = save_inferior_ptid ();
+ inferior_ptid = ptid;
+ regval = target_read_memory (regcache_read_pc (regcache) - 4, buf, 4);
+ do_cleanups (old_chain);
+ if (regval != 0)
return 0;
/* It should be a "sc" instruction. */
if (extract_unsigned_integer (buf, 4, byte_order) != INSTR_SC)
info.bfd_arch_info = bfd_lookup_arch (bfd_arch_spu, bfd_mach_spu);
info.byte_order = BFD_ENDIAN_BIG;
info.osabi = GDB_OSABI_LINUX;
- info.tdep_info = (void *) &spufs_fd;
+ info.tdep_info = &spufs_fd;
return gdbarch_find_by_info (info);
}
if (parse_spufs_run (ptid, &spufs_fd, &spufs_addr))
return spu_gdbarch (spufs_fd);
- return target_gdbarch;
+ return target_gdbarch ();
}
/* Override the to_region_ok_for_hw_watchpoint routine. */
static int
-spu_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len)
+spu_region_ok_for_hw_watchpoint (struct target_ops *self,
+ CORE_ADDR addr, int len)
{
- struct target_ops *ops_beneath = find_target_beneath (&spu_ops);
- while (ops_beneath && !ops_beneath->to_region_ok_for_hw_watchpoint)
- ops_beneath = find_target_beneath (ops_beneath);
+ struct target_ops *ops_beneath = find_target_beneath (self);
/* We cannot watch SPU local store. */
if (SPUADDR_SPU (addr) != -1)
return 0;
- if (ops_beneath)
- return ops_beneath->to_region_ok_for_hw_watchpoint (addr, len);
-
- return 0;
+ return ops_beneath->to_region_ok_for_hw_watchpoint (ops_beneath, addr, len);
}
/* Override the to_fetch_registers routine. */
/* This version applies only if we're currently in spu_run. */
if (gdbarch_bfd_arch_info (gdbarch)->arch != bfd_arch_spu)
{
- while (ops_beneath && !ops_beneath->to_fetch_registers)
- ops_beneath = find_target_beneath (ops_beneath);
-
- gdb_assert (ops_beneath);
ops_beneath->to_fetch_registers (ops_beneath, regcache, regno);
return;
}
/* The ID register holds the spufs file handle. */
if (regno == -1 || regno == SPU_ID_REGNUM)
{
- char buf[4];
+ gdb_byte buf[4];
store_unsigned_integer (buf, 4, byte_order, spufs_fd);
regcache_raw_supply (regcache, SPU_ID_REGNUM, buf);
}
/* The NPC register is found in PPC memory at SPUFS_ADDR. */
if (regno == -1 || regno == SPU_PC_REGNUM)
{
- char buf[4];
+ gdb_byte buf[4];
if (target_read (ops_beneath, TARGET_OBJECT_MEMORY, NULL,
buf, spufs_addr, sizeof buf) == sizeof buf)
/* The GPRs are found in the "regs" spufs file. */
if (regno == -1 || (regno >= 0 && regno < SPU_NUM_GPRS))
{
- char buf[16 * SPU_NUM_GPRS], annex[32];
+ gdb_byte buf[16 * SPU_NUM_GPRS];
+ char annex[32];
int i;
xsnprintf (annex, sizeof annex, "%d/regs", spufs_fd);
/* This version applies only if we're currently in spu_run. */
if (gdbarch_bfd_arch_info (gdbarch)->arch != bfd_arch_spu)
{
- while (ops_beneath && !ops_beneath->to_fetch_registers)
- ops_beneath = find_target_beneath (ops_beneath);
-
- gdb_assert (ops_beneath);
ops_beneath->to_store_registers (ops_beneath, regcache, regno);
return;
}
/* The NPC register is found in PPC memory at SPUFS_ADDR. */
if (regno == -1 || regno == SPU_PC_REGNUM)
{
- char buf[4];
+ gdb_byte buf[4];
regcache_raw_collect (regcache, SPU_PC_REGNUM, buf);
target_write (ops_beneath, TARGET_OBJECT_MEMORY, NULL,
/* The GPRs are found in the "regs" spufs file. */
if (regno == -1 || (regno >= 0 && regno < SPU_NUM_GPRS))
{
- char buf[16 * SPU_NUM_GPRS], annex[32];
+ gdb_byte buf[16 * SPU_NUM_GPRS];
+ char annex[32];
int i;
for (i = 0; i < SPU_NUM_GPRS; i++)
}
/* Override the to_xfer_partial routine. */
-static LONGEST
+static enum target_xfer_status
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)
+ const gdb_byte *writebuf, ULONGEST offset, ULONGEST len,
+ ULONGEST *xfered_len)
{
struct target_ops *ops_beneath = find_target_beneath (ops);
- while (ops_beneath && !ops_beneath->to_xfer_partial)
- ops_beneath = find_target_beneath (ops_beneath);
- gdb_assert (ops_beneath);
/* Use the "mem" spufs file to access SPU local store. */
if (object == TARGET_OBJECT_MEMORY)
{
int fd = SPUADDR_SPU (offset);
CORE_ADDR addr = SPUADDR_ADDR (offset);
- char mem_annex[32];
+ char mem_annex[32], lslr_annex[32];
+ gdb_byte buf[32];
+ ULONGEST lslr;
+ enum target_xfer_status ret;
- if (fd >= 0 && addr < SPU_LS_SIZE)
+ if (fd >= 0)
{
xsnprintf (mem_annex, sizeof mem_annex, "%d/mem", fd);
+ ret = ops_beneath->to_xfer_partial (ops_beneath, TARGET_OBJECT_SPU,
+ mem_annex, readbuf, writebuf,
+ addr, 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 (ops_beneath->to_xfer_partial (ops_beneath, TARGET_OBJECT_SPU,
+ lslr_annex, buf, NULL,
+ 0, sizeof buf, xfered_len)
+ != TARGET_XFER_OK)
+ return ret;
+
+ lslr = strtoulst ((char *) buf, NULL, 16);
return ops_beneath->to_xfer_partial (ops_beneath, TARGET_OBJECT_SPU,
mem_annex, readbuf, writebuf,
- addr, len);
+ addr & lslr, len, xfered_len);
}
}
return ops_beneath->to_xfer_partial (ops_beneath, object, annex,
- readbuf, writebuf, offset, len);
+ readbuf, writebuf, offset, len, xfered_len);
}
/* Override the to_search_memory routine. */
CORE_ADDR *found_addrp)
{
struct target_ops *ops_beneath = find_target_beneath (ops);
- while (ops_beneath && !ops_beneath->to_search_memory)
- ops_beneath = find_target_beneath (ops_beneath);
- /* For SPU local store, always fall back to the simple method. Likewise
- if we do not have any target-specific special implementation. */
- if (!ops_beneath || SPUADDR_SPU (start_addr) >= 0)
+ /* For SPU local store, always fall back to the simple method. */
+ if (SPUADDR_SPU (start_addr) >= 0)
return simple_search_memory (ops,
start_addr, search_space_len,
pattern, pattern_len, found_addrp);
spu_mourn_inferior (struct target_ops *ops)
{
struct target_ops *ops_beneath = find_target_beneath (ops);
- while (ops_beneath && !ops_beneath->to_mourn_inferior)
- ops_beneath = find_target_beneath (ops_beneath);
- gdb_assert (ops_beneath);
ops_beneath->to_mourn_inferior (ops_beneath);
spu_multiarch_deactivate ();
}
spu_ops.to_magic = OPS_MAGIC;
}
+/* -Wmissing-prototypes */
+extern initialize_file_ftype _initialize_spu_multiarch;
+
void
_initialize_spu_multiarch (void)
{
/* Install ourselves on the target stack. */
init_spu_ops ();
- add_target (&spu_ops);
+ complete_target_initialization (&spu_ops);
/* Install observers to watch for SPU objects. */
observer_attach_inferior_created (spu_multiarch_inferior_created);
projects / deliverable / binutils-gdb.git / blobdiff