| /* Low level interface to SPUs, for the remote server for GDB. |
| Copyright (C) 2006-2018 Free Software Foundation, Inc. |
| |
| Contributed by Ulrich Weigand <uweigand@de.ibm.com>. |
| |
| This file is part of GDB. |
| |
| 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 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 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, see <http://www.gnu.org/licenses/>. */ |
| |
| #include "server.h" |
| |
| #include "gdb_wait.h" |
| #include <sys/ptrace.h> |
| #include <fcntl.h> |
| #include <unistd.h> |
| #include <sys/syscall.h> |
| #include "filestuff.h" |
| #include "hostio.h" |
| #include "nat/fork-inferior.h" |
| |
| /* Some older glibc versions do not define this. */ |
| #ifndef __WNOTHREAD |
| #define __WNOTHREAD 0x20000000 /* Don't wait on children of other |
| threads in this group */ |
| #endif |
| |
| #define PTRACE_TYPE_RET long |
| #define PTRACE_TYPE_ARG3 long |
| |
| /* Number of registers. */ |
| #define SPU_NUM_REGS 130 |
| #define SPU_NUM_CORE_REGS 128 |
| |
| /* Special registers. */ |
| #define SPU_ID_REGNUM 128 |
| #define SPU_PC_REGNUM 129 |
| |
| /* PPU side system calls. */ |
| #define INSTR_SC 0x44000002 |
| #define NR_spu_run 0x0116 |
| |
| /* 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; |
| |
| /* Software breakpoint instruction. */ |
| static const gdb_byte breakpoint[] = { 0x00, 0x00, 0x3f, 0xff }; |
| |
| /* Fetch PPU register REGNO. */ |
| static CORE_ADDR |
| fetch_ppc_register (int regno) |
| { |
| PTRACE_TYPE_RET res; |
| |
| int tid = ptid_get_lwp (current_ptid); |
| |
| #ifndef __powerpc64__ |
| /* If running as a 32-bit process on a 64-bit system, we attempt |
| to get the full 64-bit register content of the target process. |
| If the PPC special ptrace call fails, we're on a 32-bit system; |
| just fall through to the regular ptrace call in that case. */ |
| { |
| char buf[8]; |
| |
| errno = 0; |
| ptrace ((PTRACE_TYPE_ARG1) PPC_PTRACE_PEEKUSR_3264, tid, |
| (PTRACE_TYPE_ARG3) (regno * 8), buf); |
| if (errno == 0) |
| ptrace ((PTRACE_TYPE_ARG1) PPC_PTRACE_PEEKUSR_3264, tid, |
| (PTRACE_TYPE_ARG3) (regno * 8 + 4), buf + 4); |
| if (errno == 0) |
| return (CORE_ADDR) *(unsigned long long *)buf; |
| } |
| #endif |
| |
| errno = 0; |
| res = ptrace (PT_READ_U, tid, |
| (PTRACE_TYPE_ARG3) (regno * sizeof (PTRACE_TYPE_RET)), 0); |
| if (errno != 0) |
| { |
| char mess[128]; |
| sprintf (mess, "reading PPC register #%d", regno); |
| perror_with_name (mess); |
| } |
| |
| return (CORE_ADDR) (unsigned long) res; |
| } |
| |
| /* Fetch WORD from PPU memory at (aligned) MEMADDR in thread TID. */ |
| static int |
| fetch_ppc_memory_1 (int tid, CORE_ADDR memaddr, PTRACE_TYPE_RET *word) |
| { |
| errno = 0; |
| |
| #ifndef __powerpc64__ |
| if (memaddr >> 32) |
| { |
| unsigned long long addr_8 = (unsigned long long) memaddr; |
| ptrace ((PTRACE_TYPE_ARG1) PPC_PTRACE_PEEKTEXT_3264, tid, |
| (PTRACE_TYPE_ARG3) &addr_8, word); |
| } |
| else |
| #endif |
| *word = ptrace (PT_READ_I, tid, (PTRACE_TYPE_ARG3) (size_t) memaddr, 0); |
| |
| return errno; |
| } |
| |
| /* Store WORD into PPU memory at (aligned) MEMADDR in thread TID. */ |
| static int |
| store_ppc_memory_1 (int tid, CORE_ADDR memaddr, PTRACE_TYPE_RET word) |
| { |
| errno = 0; |
| |
| #ifndef __powerpc64__ |
| if (memaddr >> 32) |
| { |
| unsigned long long addr_8 = (unsigned long long) memaddr; |
| ptrace ((PTRACE_TYPE_ARG1) PPC_PTRACE_POKEDATA_3264, tid, |
| (PTRACE_TYPE_ARG3) &addr_8, word); |
| } |
| else |
| #endif |
| ptrace (PT_WRITE_D, tid, (PTRACE_TYPE_ARG3) (size_t) memaddr, word); |
| |
| return errno; |
| } |
| |
| /* Fetch LEN bytes of PPU memory at MEMADDR to MYADDR. */ |
| static int |
| fetch_ppc_memory (CORE_ADDR memaddr, char *myaddr, int len) |
| { |
| int i, ret; |
| |
| CORE_ADDR addr = memaddr & -(CORE_ADDR) sizeof (PTRACE_TYPE_RET); |
| int count = ((((memaddr + len) - addr) + sizeof (PTRACE_TYPE_RET) - 1) |
| / sizeof (PTRACE_TYPE_RET)); |
| PTRACE_TYPE_RET *buffer; |
| |
| int tid = ptid_get_lwp (current_ptid); |
| |
| buffer = XALLOCAVEC (PTRACE_TYPE_RET, count); |
| for (i = 0; i < count; i++, addr += sizeof (PTRACE_TYPE_RET)) |
| if ((ret = fetch_ppc_memory_1 (tid, addr, &buffer[i])) != 0) |
| return ret; |
| |
| memcpy (myaddr, |
| (char *) buffer + (memaddr & (sizeof (PTRACE_TYPE_RET) - 1)), |
| len); |
| |
| return 0; |
| } |
| |
| /* Store LEN bytes from MYADDR to PPU memory at MEMADDR. */ |
| static int |
| store_ppc_memory (CORE_ADDR memaddr, char *myaddr, int len) |
| { |
| int i, ret; |
| |
| CORE_ADDR addr = memaddr & -(CORE_ADDR) sizeof (PTRACE_TYPE_RET); |
| int count = ((((memaddr + len) - addr) + sizeof (PTRACE_TYPE_RET) - 1) |
| / sizeof (PTRACE_TYPE_RET)); |
| PTRACE_TYPE_RET *buffer; |
| |
| int tid = ptid_get_lwp (current_ptid); |
| |
| buffer = XALLOCAVEC (PTRACE_TYPE_RET, count); |
| |
| if (addr != memaddr || len < (int) sizeof (PTRACE_TYPE_RET)) |
| if ((ret = fetch_ppc_memory_1 (tid, addr, &buffer[0])) != 0) |
| return ret; |
| |
| if (count > 1) |
| if ((ret = fetch_ppc_memory_1 (tid, addr + (count - 1) |
| * sizeof (PTRACE_TYPE_RET), |
| &buffer[count - 1])) != 0) |
| return ret; |
| |
| memcpy ((char *) buffer + (memaddr & (sizeof (PTRACE_TYPE_RET) - 1)), |
| myaddr, len); |
| |
| for (i = 0; i < count; i++, addr += sizeof (PTRACE_TYPE_RET)) |
| if ((ret = store_ppc_memory_1 (tid, addr, buffer[i])) != 0) |
| return ret; |
| |
| return 0; |
| } |
| |
| |
| /* If the PPU thread is currently stopped on a spu_run system call, |
| return to FD and ADDR the file handle and NPC parameter address |
| used with the system call. Return non-zero if successful. */ |
| static int |
| parse_spufs_run (int *fd, CORE_ADDR *addr) |
| { |
| unsigned int insn; |
| CORE_ADDR pc = fetch_ppc_register (32); /* nip */ |
| |
| /* Fetch instruction preceding current NIP. */ |
| if (fetch_ppc_memory (pc-4, (char *) &insn, 4) != 0) |
| return 0; |
| /* It should be a "sc" instruction. */ |
| if (insn != INSTR_SC) |
| return 0; |
| /* System call number should be NR_spu_run. */ |
| if (fetch_ppc_register (0) != NR_spu_run) |
| return 0; |
| |
| /* Register 3 contains fd, register 4 the NPC param pointer. */ |
| *fd = fetch_ppc_register (34); /* orig_gpr3 */ |
| *addr = fetch_ppc_register (4); |
| return 1; |
| } |
| |
| |
| /* Copy LEN bytes at OFFSET in spufs file ANNEX into/from READBUF or WRITEBUF, |
| using the /proc file system. */ |
| static int |
| spu_proc_xfer_spu (const char *annex, unsigned char *readbuf, |
| const unsigned char *writebuf, |
| CORE_ADDR offset, int len) |
| { |
| char buf[128]; |
| int fd = 0; |
| int ret = -1; |
| |
| if (!annex) |
| return 0; |
| |
| sprintf (buf, "/proc/%ld/fd/%s", ptid_get_lwp (current_ptid), annex); |
| fd = open (buf, writebuf? O_WRONLY : O_RDONLY); |
| if (fd <= 0) |
| return -1; |
| |
| if (offset != 0 |
| && lseek (fd, (off_t) offset, SEEK_SET) != (off_t) offset) |
| { |
| close (fd); |
| return 0; |
| } |
| |
| if (writebuf) |
| ret = write (fd, writebuf, (size_t) len); |
| else if (readbuf) |
| ret = read (fd, readbuf, (size_t) len); |
| |
| close (fd); |
| return ret; |
| } |
| |
| /* Callback to be used when calling fork_inferior, responsible for |
| actually initiating the tracing of the inferior. */ |
| |
| static void |
| spu_ptrace_fun () |
| { |
| if (ptrace (PTRACE_TRACEME, 0, 0, 0) < 0) |
| trace_start_error_with_name ("ptrace"); |
| if (setpgid (0, 0) < 0) |
| trace_start_error_with_name ("setpgid"); |
| } |
| |
| /* Start an inferior process and returns its pid. |
| PROGRAM is the name of the program to be started, and PROGRAM_ARGS |
| are its arguments. */ |
| |
| static int |
| spu_create_inferior (const char *program, |
| const std::vector<char *> &program_args) |
| { |
| int pid; |
| ptid_t ptid; |
| struct process_info *proc; |
| std::string str_program_args = stringify_argv (program_args); |
| |
| pid = fork_inferior (program, |
| str_program_args.c_str (), |
| get_environ ()->envp (), spu_ptrace_fun, |
| NULL, NULL, NULL, NULL); |
| |
| post_fork_inferior (pid, program); |
| |
| proc = add_process (pid, 0); |
| proc->tdesc = tdesc_spu; |
| |
| ptid = ptid_build (pid, pid, 0); |
| add_thread (ptid, NULL); |
| return pid; |
| } |
| |
| /* Attach to an inferior process. */ |
| int |
| spu_attach (unsigned long pid) |
| { |
| ptid_t ptid; |
| struct process_info *proc; |
| |
| if (ptrace (PTRACE_ATTACH, pid, 0, 0) != 0) |
| { |
| fprintf (stderr, "Cannot attach to process %ld: %s (%d)\n", pid, |
| strerror (errno), errno); |
| fflush (stderr); |
| _exit (0177); |
| } |
| |
| proc = add_process (pid, 1); |
| proc->tdesc = tdesc_spu; |
| ptid = ptid_build (pid, pid, 0); |
| add_thread (ptid, NULL); |
| return 0; |
| } |
| |
| /* Kill the inferior process. */ |
| static int |
| spu_kill (int pid) |
| { |
| int status, ret; |
| struct process_info *process = find_process_pid (pid); |
| if (process == NULL) |
| return -1; |
| |
| ptrace (PTRACE_KILL, pid, 0, 0); |
| |
| do { |
| ret = waitpid (pid, &status, 0); |
| if (WIFEXITED (status) || WIFSIGNALED (status)) |
| break; |
| } while (ret != -1 || errno != ECHILD); |
| |
| clear_inferiors (); |
| remove_process (process); |
| return 0; |
| } |
| |
| /* Detach from inferior process. */ |
| static int |
| spu_detach (int pid) |
| { |
| struct process_info *process = find_process_pid (pid); |
| if (process == NULL) |
| return -1; |
| |
| ptrace (PTRACE_DETACH, pid, 0, 0); |
| |
| clear_inferiors (); |
| remove_process (process); |
| return 0; |
| } |
| |
| static void |
| spu_mourn (struct process_info *process) |
| { |
| remove_process (process); |
| } |
| |
| static void |
| spu_join (int pid) |
| { |
| int status, ret; |
| |
| do { |
| ret = waitpid (pid, &status, 0); |
| if (WIFEXITED (status) || WIFSIGNALED (status)) |
| break; |
| } while (ret != -1 || errno != ECHILD); |
| } |
| |
| /* Return nonzero if the given thread is still alive. */ |
| static int |
| spu_thread_alive (ptid_t ptid) |
| { |
| return ptid_equal (ptid, current_ptid); |
| } |
| |
| /* Resume process. */ |
| static void |
| spu_resume (struct thread_resume *resume_info, size_t n) |
| { |
| struct thread_info *thr = get_first_thread (); |
| size_t i; |
| |
| for (i = 0; i < n; i++) |
| if (ptid_equal (resume_info[i].thread, minus_one_ptid) |
| || ptid_equal (resume_info[i].thread, ptid_of (thr))) |
| break; |
| |
| if (i == n) |
| return; |
| |
| /* We don't support hardware single-stepping right now, assume |
| GDB knows to use software single-stepping. */ |
| if (resume_info[i].kind == resume_step) |
| fprintf (stderr, "Hardware single-step not supported.\n"); |
| |
| regcache_invalidate (); |
| |
| errno = 0; |
| ptrace (PTRACE_CONT, ptid_get_lwp (ptid_of (thr)), 0, resume_info[i].sig); |
| if (errno) |
| perror_with_name ("ptrace"); |
| } |
| |
| /* Wait for process, returns status. */ |
| static ptid_t |
| spu_wait (ptid_t ptid, struct target_waitstatus *ourstatus, int options) |
| { |
| int pid = ptid_get_pid (ptid); |
| int w; |
| int ret; |
| |
| while (1) |
| { |
| ret = waitpid (pid, &w, WNOHANG | __WALL | __WNOTHREAD); |
| |
| if (ret == -1) |
| { |
| if (errno != ECHILD) |
| perror_with_name ("waitpid"); |
| } |
| else if (ret > 0) |
| break; |
| |
| usleep (1000); |
| } |
| |
| /* On the first wait, continue running the inferior until we are |
| blocked inside an spu_run system call. */ |
| if (!server_waiting) |
| { |
| int fd; |
| CORE_ADDR addr; |
| |
| while (!parse_spufs_run (&fd, &addr)) |
| { |
| ptrace (PT_SYSCALL, pid, (PTRACE_TYPE_ARG3) 0, 0); |
| waitpid (pid, NULL, __WALL | __WNOTHREAD); |
| } |
| } |
| |
| if (WIFEXITED (w)) |
| { |
| fprintf (stderr, "\nChild exited with retcode = %x \n", WEXITSTATUS (w)); |
| ourstatus->kind = TARGET_WAITKIND_EXITED; |
| ourstatus->value.integer = WEXITSTATUS (w); |
| clear_inferiors (); |
| return pid_to_ptid (ret); |
| } |
| else if (!WIFSTOPPED (w)) |
| { |
| fprintf (stderr, "\nChild terminated with signal = %x \n", WTERMSIG (w)); |
| ourstatus->kind = TARGET_WAITKIND_SIGNALLED; |
| ourstatus->value.sig = gdb_signal_from_host (WTERMSIG (w)); |
| clear_inferiors (); |
| return pid_to_ptid (ret); |
| } |
| |
| /* After attach, we may have received a SIGSTOP. Do not return this |
| as signal to GDB, or else it will try to continue with SIGSTOP ... */ |
| if (!server_waiting) |
| { |
| ourstatus->kind = TARGET_WAITKIND_STOPPED; |
| ourstatus->value.sig = GDB_SIGNAL_0; |
| return ptid_build (ret, ret, 0); |
| } |
| |
| ourstatus->kind = TARGET_WAITKIND_STOPPED; |
| ourstatus->value.sig = gdb_signal_from_host (WSTOPSIG (w)); |
| return ptid_build (ret, ret, 0); |
| } |
| |
| /* Fetch inferior registers. */ |
| static void |
| spu_fetch_registers (struct regcache *regcache, int regno) |
| { |
| int fd; |
| CORE_ADDR addr; |
| |
| /* 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) |
| supply_register (regcache, SPU_ID_REGNUM, (char *)&fd); |
| |
| /* The NPC register is found at ADDR. */ |
| if (regno == -1 || regno == SPU_PC_REGNUM) |
| { |
| char buf[4]; |
| if (fetch_ppc_memory (addr, buf, 4) == 0) |
| supply_register (regcache, SPU_PC_REGNUM, buf); |
| } |
| |
| /* The GPRs are found in the "regs" spufs file. */ |
| if (regno == -1 || (regno >= 0 && regno < SPU_NUM_CORE_REGS)) |
| { |
| unsigned char buf[16*SPU_NUM_CORE_REGS]; |
| char annex[32]; |
| int i; |
| |
| sprintf (annex, "%d/regs", fd); |
| if (spu_proc_xfer_spu (annex, buf, NULL, 0, sizeof buf) == sizeof buf) |
| for (i = 0; i < SPU_NUM_CORE_REGS; i++) |
| supply_register (regcache, i, buf + i*16); |
| } |
| } |
| |
| /* Store inferior registers. */ |
| static void |
| spu_store_registers (struct regcache *regcache, int regno) |
| { |
| int fd; |
| CORE_ADDR addr; |
| |
| /* ??? Some callers use 0 to mean all registers. */ |
| if (regno == 0) |
| regno = -1; |
| |
| /* We must be stopped on a spu_run system call. */ |
| if (!parse_spufs_run (&fd, &addr)) |
| return; |
| |
| /* The NPC register is found at ADDR. */ |
| if (regno == -1 || regno == SPU_PC_REGNUM) |
| { |
| char buf[4]; |
| collect_register (regcache, SPU_PC_REGNUM, buf); |
| store_ppc_memory (addr, buf, 4); |
| } |
| |
| /* The GPRs are found in the "regs" spufs file. */ |
| if (regno == -1 || (regno >= 0 && regno < SPU_NUM_CORE_REGS)) |
| { |
| unsigned char buf[16*SPU_NUM_CORE_REGS]; |
| char annex[32]; |
| int i; |
| |
| for (i = 0; i < SPU_NUM_CORE_REGS; i++) |
| collect_register (regcache, i, buf + i*16); |
| |
| sprintf (annex, "%d/regs", fd); |
| spu_proc_xfer_spu (annex, NULL, buf, 0, sizeof buf); |
| } |
| } |
| |
| /* Copy LEN bytes from inferior's memory starting at MEMADDR |
| to debugger memory starting at MYADDR. */ |
| static int |
| spu_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
| { |
| int fd, ret; |
| CORE_ADDR addr; |
| 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)) |
| return 0; |
| |
| /* 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; |
| } |
| |
| /* Copy LEN bytes of data from debugger memory at MYADDR |
| to inferior's memory at MEMADDR. |
| On failure (cannot write the inferior) |
| returns the value of errno. */ |
| static int |
| spu_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
| { |
| int fd, ret; |
| CORE_ADDR addr; |
| 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)) |
| return 0; |
| |
| /* 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; |
| } |
| |
| /* Look up special symbols -- unneded here. */ |
| static void |
| spu_look_up_symbols (void) |
| { |
| } |
| |
| /* Send signal to inferior. */ |
| static void |
| spu_request_interrupt (void) |
| { |
| struct thread_info *thr = get_first_thread (); |
| |
| syscall (SYS_tkill, lwpid_of (thr), SIGINT); |
| } |
| |
| /* Implementation of the target_ops method "sw_breakpoint_from_kind". */ |
| |
| static const gdb_byte * |
| spu_sw_breakpoint_from_kind (int kind, int *size) |
| { |
| *size = sizeof breakpoint; |
| return breakpoint; |
| } |
| |
| static struct target_ops spu_target_ops = { |
| spu_create_inferior, |
| NULL, /* post_create_inferior */ |
| spu_attach, |
| spu_kill, |
| spu_detach, |
| spu_mourn, |
| spu_join, |
| spu_thread_alive, |
| spu_resume, |
| 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_hardware_single_step */ |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| spu_proc_xfer_spu, |
| hostio_last_error_from_errno, |
| NULL, /* qxfer_osdata */ |
| NULL, /* qxfer_siginfo */ |
| NULL, /* supports_non_stop */ |
| NULL, /* async */ |
| NULL, /* start_non_stop */ |
| NULL, /* supports_multi_process */ |
| NULL, /* supports_fork_events */ |
| NULL, /* supports_vfork_events */ |
| NULL, /* supports_exec_events */ |
| NULL, /* handle_new_gdb_connection */ |
| NULL, /* handle_monitor_command */ |
| NULL, /* core_of_thread */ |
| NULL, /* read_loadmap */ |
| NULL, /* process_qsupported */ |
| NULL, /* supports_tracepoints */ |
| NULL, /* read_pc */ |
| NULL, /* write_pc */ |
| NULL, /* thread_stopped */ |
| NULL, /* get_tib_address */ |
| NULL, /* pause_all */ |
| NULL, /* unpause_all */ |
| NULL, /* stabilize_threads */ |
| NULL, /* install_fast_tracepoint_jump_pad */ |
| NULL, /* emit_ops */ |
| NULL, /* supports_disable_randomization */ |
| NULL, /* get_min_fast_tracepoint_insn_len */ |
| NULL, /* qxfer_libraries_svr4 */ |
| NULL, /* support_agent */ |
| NULL, /* support_btrace */ |
| NULL, /* enable_btrace */ |
| NULL, /* disable_btrace */ |
| NULL, /* read_btrace */ |
| NULL, /* read_btrace_conf */ |
| NULL, /* supports_range_stepping */ |
| NULL, /* pid_to_exec_file */ |
| NULL, /* multifs_open */ |
| NULL, /* multifs_unlink */ |
| NULL, /* multifs_readlink */ |
| NULL, /* breakpoint_kind_from_pc */ |
| spu_sw_breakpoint_from_kind, |
| }; |
| |
| void |
| initialize_low (void) |
| { |
| set_target_ops (&spu_target_ops); |
| init_registers_spu (); |
| } |