/* Low level interface to SPUs, for the remote server for GDB.
- Copyright (C) 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+ Copyright (C) 2006-2015 Free Software Foundation, Inc.
Contributed by Ulrich Weigand <uweigand@de.ibm.com>.
#include "server.h"
-#include <sys/wait.h>
-#include <stdio.h>
+#include "gdb_wait.h"
#include <sys/ptrace.h>
#include <fcntl.h>
-#include <string.h>
-#include <stdlib.h>
#include <unistd.h>
-#include <errno.h>
#include <sys/syscall.h>
+#include "filestuff.h"
+#include "hostio.h"
/* Some older glibc versions do not define this. */
#ifndef __WNOTHREAD
#define INSTR_SC 0x44000002
#define NR_spu_run 0x0116
-/* Get current thread ID (Linux task ID). */
-#define current_ptid ((struct inferior_list_entry *)current_inferior)->id
-
/* These are used in remote-utils.c. */
int using_threads = 0;
/* Defined in auto-generated file reg-spu.c. */
void init_registers_spu (void);
-
+extern const struct target_desc *tdesc_spu;
/* Fetch PPU register REGNO. */
static CORE_ADDR
static int
parse_spufs_run (int *fd, CORE_ADDR *addr)
{
- char buf[4];
+ unsigned int insn;
CORE_ADDR pc = fetch_ppc_register (32); /* nip */
/* Fetch instruction preceding current NIP. */
- if (fetch_ppc_memory (pc-4, buf, 4) != 0)
+ if (fetch_ppc_memory (pc-4, (char *) &insn, 4) != 0)
return 0;
/* It should be a "sc" instruction. */
- if (*(unsigned int *)buf != INSTR_SC)
+ if (insn != INSTR_SC)
return 0;
/* System call number should be NR_spu_run. */
if (fetch_ppc_register (0) != NR_spu_run)
{
int pid;
ptid_t ptid;
+ struct process_info *proc;
pid = fork ();
if (pid < 0)
if (pid == 0)
{
+ close_most_fds ();
ptrace (PTRACE_TRACEME, 0, 0, 0);
setpgid (0, 0);
_exit (0177);
}
- add_process (pid, 0);
+ proc = add_process (pid, 0);
+ proc->tdesc = tdesc_spu;
ptid = ptid_build (pid, pid, 0);
add_thread (ptid, NULL);
spu_attach (unsigned long pid)
{
ptid_t ptid;
+ struct process_info *proc;
if (ptrace (PTRACE_ATTACH, pid, 0, 0) != 0)
{
_exit (0177);
}
- add_process (pid, 1);
+ proc = add_process (pid, 1);
+ proc->tdesc = tdesc_spu;
ptid = ptid_build (pid, pid, 0);
add_thread (ptid, NULL);
return 0;
spu_join (int pid)
{
int status, ret;
- struct process_info *process;
-
- process = find_process_pid (pid);
- if (process == NULL)
- return;
do {
ret = waitpid (pid, &status, 0);
{
fprintf (stderr, "\nChild terminated with signal = %x \n", WTERMSIG (w));
ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
- ourstatus->value.sig = target_signal_from_host (WTERMSIG (w));
+ ourstatus->value.sig = gdb_signal_from_host (WTERMSIG (w));
clear_inferiors ();
return pid_to_ptid (ret);
}
if (!server_waiting)
{
ourstatus->kind = TARGET_WAITKIND_STOPPED;
- ourstatus->value.sig = TARGET_SIGNAL_0;
+ ourstatus->value.sig = GDB_SIGNAL_0;
return ptid_build (ret, ret, 0);
}
ourstatus->kind = TARGET_WAITKIND_STOPPED;
- ourstatus->value.sig = target_signal_from_host (WSTOPSIG (w));
+ ourstatus->value.sig = gdb_signal_from_host (WSTOPSIG (w));
return ptid_build (ret, ret, 0);
}
{
int fd, ret;
CORE_ADDR addr;
- char annex[32];
+ char annex[32], lslr_annex[32], buf[32];
+ CORE_ADDR lslr;
/* We must be stopped on a spu_run system call. */
if (!parse_spufs_run (&fd, &addr))
/* Use the "mem" spufs file to access SPU local store. */
sprintf (annex, "%d/mem", fd);
ret = spu_proc_xfer_spu (annex, myaddr, NULL, memaddr, len);
+ if (ret > 0)
+ return ret == len ? 0 : EIO;
+
+ /* 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. */
+ sprintf (lslr_annex, "%d/lslr", fd);
+ memset (buf, 0, sizeof buf);
+ if (spu_proc_xfer_spu (lslr_annex, (unsigned char *)buf, NULL,
+ 0, sizeof buf) <= 0)
+ return ret;
+
+ lslr = strtoul (buf, NULL, 16);
+ ret = spu_proc_xfer_spu (annex, myaddr, NULL, memaddr & lslr, len);
+
return ret == len ? 0 : EIO;
}
{
int fd, ret;
CORE_ADDR addr;
- char annex[32];
+ char annex[32], lslr_annex[32], buf[32];
+ CORE_ADDR lslr;
/* We must be stopped on a spu_run system call. */
if (!parse_spufs_run (&fd, &addr))
/* Use the "mem" spufs file to access SPU local store. */
sprintf (annex, "%d/mem", fd);
ret = spu_proc_xfer_spu (annex, NULL, myaddr, memaddr, len);
+ if (ret > 0)
+ return ret == len ? 0 : EIO;
+
+ /* 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. */
+ sprintf (lslr_annex, "%d/lslr", fd);
+ memset (buf, 0, sizeof buf);
+ if (spu_proc_xfer_spu (lslr_annex, (unsigned char *)buf, NULL,
+ 0, sizeof buf) <= 0)
+ return ret;
+
+ lslr = strtoul (buf, NULL, 16);
+ ret = spu_proc_xfer_spu (annex, NULL, myaddr, memaddr & lslr, len);
+
return ret == len ? 0 : EIO;
}
spu_wait,
spu_fetch_registers,
spu_store_registers,
+ NULL, /* prepare_to_access_memory */
+ NULL, /* done_accessing_memory */
spu_read_memory,
spu_write_memory,
spu_look_up_symbols,
spu_request_interrupt,
NULL,
+ NULL, /* supports_z_point_type */
NULL,
NULL,
+ NULL, /* stopped_by_sw_breakpoint */
+ NULL, /* supports_stopped_by_sw_breakpoint */
+ NULL, /* stopped_by_hw_breakpoint */
+ NULL, /* supports_stopped_by_hw_breakpoint */
+ NULL, /* supports_conditional_breakpoints */
NULL,
NULL,
NULL,
projects / deliverable / binutils-gdb.git / blobdiff