diff options
Diffstat (limited to 'gdb/linux-proc.c')
| -rw-r--r-- | gdb/linux-proc.c | 132 |
1 files changed, 114 insertions, 18 deletions
diff --git a/gdb/linux-proc.c b/gdb/linux-proc.c index 282a3ec..2f290c4 100644 --- a/gdb/linux-proc.c +++ b/gdb/linux-proc.c @@ -35,6 +35,8 @@ #include "cli/cli-decode.h" /* for add_info */ #include "gdb_string.h" +#include <signal.h> + #include "linux-nat.h" #ifndef O_LARGEFILE @@ -404,35 +406,52 @@ linux_info_proc_cmd (char *args, int from_tty) { long long addr, endaddr, size, offset, inode; char permissions[8], device[8], filename[MAXPATHLEN]; - char *header_fmt_string, *data_fmt_string; + printf_filtered ("Mapped address spaces:\n\n"); if (TARGET_ADDR_BIT == 32) { - header_fmt_string = "\t%10s %10s %10s %10s %7s\n"; - data_fmt_string = "\t%#10lx %#10lx %#10x %#10x %7s\n"; - } + printf_filtered ("\t%10s %10s %10s %10s %7s\n", + "Start Addr", + " End Addr", + " Size", " Offset", "objfile"); + } else - { - header_fmt_string = " %18s %18s %10s %10s %7s\n"; - data_fmt_string = " %#18lx %#18lx %#10x %#10x %7s\n"; - } - - printf_filtered ("Mapped address spaces:\n\n"); - printf_filtered (header_fmt_string, + { + printf_filtered (" %18s %18s %10s %10s %7s\n", "Start Addr", " End Addr", " Size", " Offset", "objfile"); + } while (read_mapping (procfile, &addr, &endaddr, &permissions[0], &offset, &device[0], &inode, &filename[0])) { size = endaddr - addr; - printf_filtered (data_fmt_string, (unsigned long) addr, /* FIXME: pr_addr */ + + /* FIXME: carlton/2003-08-27: Maybe the printf_filtered + calls here (and possibly above) should be abstracted + out into their own functions? Andrew suggests using + a generic local_address_string instead to print out + the addresses; that makes sense to me, too. */ + + if (TARGET_ADDR_BIT == 32) + { + printf_filtered ("\t%#10lx %#10lx %#10x %#10x %7s\n", + (unsigned long) addr, /* FIXME: pr_addr */ (unsigned long) endaddr, (int) size, (unsigned int) offset, filename[0] ? filename : ""); - + } + else + { + printf_filtered (" %#18lx %#18lx %#10x %#10x %7s\n", + (unsigned long) addr, /* FIXME: pr_addr */ + (unsigned long) endaddr, + (int) size, + (unsigned int) offset, + filename[0] ? filename : ""); + } } fclose (procfile); @@ -592,11 +611,7 @@ linux_proc_xfer_memory (CORE_ADDR addr, char *myaddr, int len, int write, /* If pread64 is available, use it. It's faster if the kernel supports it (only one syscall), and it's 64-bit safe even on 32-bit platforms (for instance, SPARC debugging a SPARC64 - application). - - We play some autoconf and CFLAGS games to get this declaration - exposed: -D_XOPEN_SOURCE=500 -D_LARGEFILE64_SOURCE. And then - a -D_BSD_SOURCE to counteract the defaults for _XOPEN_SOURCE. */ + application). */ #ifdef HAVE_PREAD64 if (pread64 (fd, myaddr, len, addr) != len) #else @@ -609,3 +624,84 @@ linux_proc_xfer_memory (CORE_ADDR addr, char *myaddr, int len, int write, close (fd); return ret; } + +/* Parse LINE as a signal set and add its set bits to SIGS. */ + +static void +linux_proc_add_line_to_sigset (const char *line, sigset_t *sigs) +{ + int len = strlen (line) - 1; + const char *p; + int signum; + + if (line[len] != '\n') + error ("Could not parse signal set: %s", line); + + p = line; + signum = len * 4; + while (len-- > 0) + { + int digit; + + if (*p >= '0' && *p <= '9') + digit = *p - '0'; + else if (*p >= 'a' && *p <= 'f') + digit = *p - 'a' + 10; + else + error ("Could not parse signal set: %s", line); + + signum -= 4; + + if (digit & 1) + sigaddset (sigs, signum + 1); + if (digit & 2) + sigaddset (sigs, signum + 2); + if (digit & 4) + sigaddset (sigs, signum + 3); + if (digit & 8) + sigaddset (sigs, signum + 4); + + p++; + } +} + +/* Find process PID's pending signals from /proc/pid/status and set SIGS + to match. */ + +void +linux_proc_pending_signals (int pid, sigset_t *pending, sigset_t *blocked, sigset_t *ignored) +{ + FILE *procfile; + char buffer[MAXPATHLEN], fname[MAXPATHLEN]; + int signum; + + sigemptyset (pending); + sigemptyset (blocked); + sigemptyset (ignored); + sprintf (fname, "/proc/%d/status", pid); + procfile = fopen (fname, "r"); + if (procfile == NULL) + error ("Could not open %s", fname); + + while (fgets (buffer, MAXPATHLEN, procfile) != NULL) + { + /* Normal queued signals are on the SigPnd line in the status + file. However, 2.6 kernels also have a "shared" pending queue + for delivering signals to a thread group, so check for a ShdPnd + line also. + + Unfortunately some Red Hat kernels include the shared pending queue + but not the ShdPnd status field. */ + + if (strncmp (buffer, "SigPnd:\t", 8) == 0) + linux_proc_add_line_to_sigset (buffer + 8, pending); + else if (strncmp (buffer, "ShdPnd:\t", 8) == 0) + linux_proc_add_line_to_sigset (buffer + 8, pending); + else if (strncmp (buffer, "SigBlk:\t", 8) == 0) + linux_proc_add_line_to_sigset (buffer + 8, blocked); + else if (strncmp (buffer, "SigIgn:\t", 8) == 0) + linux_proc_add_line_to_sigset (buffer + 8, ignored); + } + + fclose (procfile); +} |