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author | David S. Miller <davem@davemloft.net> | 2011-08-07 23:20:26 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2011-08-07 23:20:26 -0700 |
commit | 19fd61785a580c60cba900c5171bfadb57dd5056 (patch) | |
tree | 1e491fb014be0dc03f4b6755bb94e73afd38c455 /kernel/debug/kdb/kdb_io.c | |
parent | 57569d0e12eaf31717e295960cd2a26f626c8e5b (diff) | |
parent | 8028837d71ba9904b17281b40f94b93e947fbe38 (diff) | |
download | linux-stable-19fd61785a580c60cba900c5171bfadb57dd5056.tar.gz linux-stable-19fd61785a580c60cba900c5171bfadb57dd5056.tar.bz2 linux-stable-19fd61785a580c60cba900c5171bfadb57dd5056.zip |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'kernel/debug/kdb/kdb_io.c')
-rw-r--r-- | kernel/debug/kdb/kdb_io.c | 36 |
1 files changed, 25 insertions, 11 deletions
diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c index 96fdaac46a80..4802eb5840e1 100644 --- a/kernel/debug/kdb/kdb_io.c +++ b/kernel/debug/kdb/kdb_io.c @@ -31,15 +31,21 @@ char kdb_prompt_str[CMD_BUFLEN]; int kdb_trap_printk; -static void kgdb_transition_check(char *buffer) +static int kgdb_transition_check(char *buffer) { - int slen = strlen(buffer); - if (strncmp(buffer, "$?#3f", slen) != 0 && - strncmp(buffer, "$qSupported#37", slen) != 0 && - strncmp(buffer, "+$qSupported#37", slen) != 0) { + if (buffer[0] != '+' && buffer[0] != '$') { KDB_STATE_SET(KGDB_TRANS); kdb_printf("%s", buffer); + } else { + int slen = strlen(buffer); + if (slen > 3 && buffer[slen - 3] == '#') { + kdb_gdb_state_pass(buffer); + strcpy(buffer, "kgdb"); + KDB_STATE_SET(DOING_KGDB); + return 1; + } } + return 0; } static int kdb_read_get_key(char *buffer, size_t bufsize) @@ -251,6 +257,10 @@ poll_again: case 13: /* enter */ *lastchar++ = '\n'; *lastchar++ = '\0'; + if (!KDB_STATE(KGDB_TRANS)) { + KDB_STATE_SET(KGDB_TRANS); + kdb_printf("%s", buffer); + } kdb_printf("\n"); return buffer; case 4: /* Del */ @@ -382,22 +392,26 @@ poll_again: * printed characters if we think that * kgdb is connecting, until the check * fails */ - if (!KDB_STATE(KGDB_TRANS)) - kgdb_transition_check(buffer); - else + if (!KDB_STATE(KGDB_TRANS)) { + if (kgdb_transition_check(buffer)) + return buffer; + } else { kdb_printf("%c", key); + } } /* Special escape to kgdb */ if (lastchar - buffer >= 5 && strcmp(lastchar - 5, "$?#3f") == 0) { + kdb_gdb_state_pass(lastchar - 5); strcpy(buffer, "kgdb"); KDB_STATE_SET(DOING_KGDB); return buffer; } - if (lastchar - buffer >= 14 && - strcmp(lastchar - 14, "$qSupported#37") == 0) { + if (lastchar - buffer >= 11 && + strcmp(lastchar - 11, "$qSupported") == 0) { + kdb_gdb_state_pass(lastchar - 11); strcpy(buffer, "kgdb"); - KDB_STATE_SET(DOING_KGDB2); + KDB_STATE_SET(DOING_KGDB); return buffer; } } |