diff options
Diffstat (limited to 'gdb/procfs.c')
| -rw-r--r-- | gdb/procfs.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/gdb/procfs.c b/gdb/procfs.c index be94803..2215ce3 100644 --- a/gdb/procfs.c +++ b/gdb/procfs.c @@ -2322,6 +2322,10 @@ wait_again: case FLTBPT: case FLTTRACE: statval = (SIGTRAP << 8) | 0177; + break; + case FLTWATCH: + case FLTKWATCH: + statval = (SIGTRAP << 8) | 0177; break; case FLTSTACK: case FLTACCESS: @@ -3529,6 +3533,56 @@ procfs_can_run () return(1); } +/* Insert a watchpoint */ +int +procfs_set_watchpoint(pid, addr, len, rw) + int pid; + CORE_ADDR addr; + int len; + int rw; +{ + struct procinfo *pi; + prwatch_t wpt; + + pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0); + wpt.pr_vaddr = (caddr_t)addr; + wpt.pr_size = len; + wpt.pr_wflags = ((rw & 1) ? MA_READ : 0) | ((rw & 2) ? MA_WRITE : 0); + if (ioctl (pi->fd, PIOCSWATCH, &wpt) < 0) + { + if (errno == E2BIG) + return -1; + /* Currently it sometimes happens that the same watchpoint gets + deleted twice - don't die in this case (FIXME please) */ + if (errno == ESRCH && len == 0) + return 0; + print_sys_errmsg (pi->pathname, errno); + error ("PIOCSWATCH failed"); + } + return 0; +} + +int +procfs_stopped_by_watchpoint(pid) + int pid; +{ + struct procinfo *pi; + short what; + short why; + + pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0); + if (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)) + { + why = pi->prstatus.pr_why; + what = pi->prstatus.pr_what; + if (why == PR_FAULTED + && (what == FLTWATCH) || (what == FLTKWATCH)) + return what; + } + return 0; +} + + struct target_ops procfs_ops = { "procfs", /* to_shortname */ "Unix /proc child process", /* to_longname */ |