diff options
Diffstat (limited to 'gdb/linux-nat.c')
| -rw-r--r-- | gdb/linux-nat.c | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c index d91c6be..1308844 100644 --- a/gdb/linux-nat.c +++ b/gdb/linux-nat.c @@ -54,6 +54,11 @@ #include "gdb_dirent.h" #include "xml-support.h" #include "terminal.h" +#include <sys/vfs.h> + +#ifndef SPUFS_MAGIC +#define SPUFS_MAGIC 0x23c9b64e +#endif #ifdef HAVE_PERSONALITY # include <sys/personality.h> @@ -3661,6 +3666,119 @@ linux_nat_corefile_thread_callback (struct lwp_info *ti, void *data) return 0; } +/* Enumerate spufs IDs for process PID. */ + +static void +iterate_over_spus (int pid, void (*callback) (void *, int), void *data) +{ + char path[128]; + DIR *dir; + struct dirent *entry; + + xsnprintf (path, sizeof path, "/proc/%d/fd", pid); + dir = opendir (path); + if (!dir) + return; + + rewinddir (dir); + while ((entry = readdir (dir)) != NULL) + { + struct stat st; + struct statfs stfs; + int fd; + + fd = atoi (entry->d_name); + if (!fd) + continue; + + xsnprintf (path, sizeof path, "/proc/%d/fd/%d", pid, fd); + if (stat (path, &st) != 0) + continue; + if (!S_ISDIR (st.st_mode)) + continue; + + if (statfs (path, &stfs) != 0) + continue; + if (stfs.f_type != SPUFS_MAGIC) + continue; + + callback (data, fd); + } + + closedir (dir); +} + +/* Generate corefile notes for SPU contexts. */ + +struct linux_spu_corefile_data +{ + bfd *obfd; + char *note_data; + int *note_size; +}; + +static void +linux_spu_corefile_callback (void *data, int fd) +{ + struct linux_spu_corefile_data *args = data; + int i; + + static const char *spu_files[] = + { + "object-id", + "mem", + "regs", + "fpcr", + "lslr", + "decr", + "decr_status", + "signal1", + "signal1_type", + "signal2", + "signal2_type", + "event_mask", + "event_status", + "mbox_info", + "ibox_info", + "wbox_info", + "dma_info", + "proxydma_info", + }; + + for (i = 0; i < sizeof (spu_files) / sizeof (spu_files[0]); i++) + { + char annex[32], note_name[32]; + gdb_byte *spu_data; + LONGEST spu_len; + + xsnprintf (annex, sizeof annex, "%d/%s", fd, spu_files[i]); + spu_len = target_read_alloc (¤t_target, TARGET_OBJECT_SPU, + annex, &spu_data); + if (spu_len > 0) + { + xsnprintf (note_name, sizeof note_name, "SPU/%s", annex); + args->note_data = elfcore_write_note (args->obfd, args->note_data, + args->note_size, note_name, + NT_SPU, spu_data, spu_len); + xfree (spu_data); + } + } +} + +static char * +linux_spu_make_corefile_notes (bfd *obfd, char *note_data, int *note_size) +{ + struct linux_spu_corefile_data args; + args.obfd = obfd; + args.note_data = note_data; + args.note_size = note_size; + + iterate_over_spus (PIDGET (inferior_ptid), + linux_spu_corefile_callback, &args); + + return args.note_data; +} + /* Fills the "to_make_corefile_note" target vector. Builds the note section for a corefile, and returns it in a malloc buffer. */ @@ -3722,6 +3840,8 @@ linux_nat_make_corefile_notes (bfd *obfd, int *note_size) xfree (auxv); } + note_data = linux_spu_make_corefile_notes (obfd, note_data, note_size); + make_cleanup (xfree, note_data); return note_data; } @@ -4055,6 +4175,100 @@ linux_proc_xfer_partial (struct target_ops *ops, enum target_object object, return ret; } + +/* Enumerate spufs IDs for process PID. */ +static LONGEST +spu_enumerate_spu_ids (int pid, gdb_byte *buf, ULONGEST offset, LONGEST len) +{ + enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch); + LONGEST pos = 0; + LONGEST written = 0; + char path[128]; + DIR *dir; + struct dirent *entry; + + xsnprintf (path, sizeof path, "/proc/%d/fd", pid); + dir = opendir (path); + if (!dir) + return -1; + + rewinddir (dir); + while ((entry = readdir (dir)) != NULL) + { + struct stat st; + struct statfs stfs; + int fd; + + fd = atoi (entry->d_name); + if (!fd) + continue; + + xsnprintf (path, sizeof path, "/proc/%d/fd/%d", pid, fd); + if (stat (path, &st) != 0) + continue; + if (!S_ISDIR (st.st_mode)) + continue; + + if (statfs (path, &stfs) != 0) + continue; + if (stfs.f_type != SPUFS_MAGIC) + continue; + + if (pos >= offset && pos + 4 <= offset + len) + { + store_unsigned_integer (buf + pos - offset, 4, byte_order, fd); + written += 4; + } + pos += 4; + } + + closedir (dir); + return written; +} + +/* Implement the to_xfer_partial interface for the TARGET_OBJECT_SPU + object type, using the /proc file system. */ +static LONGEST +linux_proc_xfer_spu (struct target_ops *ops, enum target_object object, + const char *annex, gdb_byte *readbuf, + const gdb_byte *writebuf, + ULONGEST offset, LONGEST len) +{ + char buf[128]; + int fd = 0; + int ret = -1; + int pid = PIDGET (inferior_ptid); + + if (!annex) + { + if (!readbuf) + return -1; + else + return spu_enumerate_spu_ids (pid, readbuf, offset, len); + } + + xsnprintf (buf, sizeof buf, "/proc/%d/fd/%s", pid, 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; +} + + /* Parse LINE as a signal set and add its set bits to SIGS. */ static void @@ -4260,6 +4474,10 @@ linux_xfer_partial (struct target_ops *ops, enum target_object object, return linux_nat_xfer_osdata (ops, object, annex, readbuf, writebuf, offset, len); + if (object == TARGET_OBJECT_SPU) + return linux_proc_xfer_spu (ops, object, annex, readbuf, writebuf, + offset, len); + /* GDB calculates all the addresses in possibly larget width of the address. Address width needs to be masked before its final use - either by linux_proc_xfer_partial or inf_ptrace_xfer_partial. |