diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-08-01 13:39:40 -1000 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-08-01 13:39:40 -1000 |
| commit | 72f9adfd20e3be8a33ff3ef96cec787ed97b9ba9 (patch) | |
| tree | 2e59de0152634f577ba996a1a3f35eceb9c5ebee /kernel/debug/gdbstub.c | |
| parent | 5f66d2b58ca879e70740c82422354144845d6dd3 (diff) | |
| parent | 37f86b469d73fc2f2a925536fb99b8f513f641b7 (diff) | |
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb:
kdb,kgdb: Allow arbitrary kgdb magic knock sequences
kdb: Remove all references to DOING_KGDB2
kdb,kgdb: Implement switch and pass buffer from kdb -> gdb
kdb: cleanup unused variables missed in the original kdb merge
Diffstat (limited to 'kernel/debug/gdbstub.c')
| -rw-r--r-- | kernel/debug/gdbstub.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/kernel/debug/gdbstub.c b/kernel/debug/gdbstub.c index a11db956dd6..34872482315 100644 --- a/kernel/debug/gdbstub.c +++ b/kernel/debug/gdbstub.c @@ -42,6 +42,8 @@ /* Our I/O buffers. */ static char remcom_in_buffer[BUFMAX]; static char remcom_out_buffer[BUFMAX]; +static int gdbstub_use_prev_in_buf; +static int gdbstub_prev_in_buf_pos; /* Storage for the registers, in GDB format. */ static unsigned long gdb_regs[(NUMREGBYTES + @@ -58,6 +60,13 @@ static int gdbstub_read_wait(void) int ret = -1; int i; + if (unlikely(gdbstub_use_prev_in_buf)) { + if (gdbstub_prev_in_buf_pos < gdbstub_use_prev_in_buf) + return remcom_in_buffer[gdbstub_prev_in_buf_pos++]; + else + gdbstub_use_prev_in_buf = 0; + } + /* poll any additional I/O interfaces that are defined */ while (ret < 0) for (i = 0; kdb_poll_funcs[i] != NULL; i++) { @@ -109,7 +118,6 @@ static void get_packet(char *buffer) buffer[count] = ch; count = count + 1; } - buffer[count] = 0; if (ch == '#') { xmitcsum = hex_to_bin(gdbstub_read_wait()) << 4; @@ -124,6 +132,7 @@ static void get_packet(char *buffer) if (dbg_io_ops->flush) dbg_io_ops->flush(); } + buffer[count] = 0; } while (checksum != xmitcsum); } @@ -1082,12 +1091,11 @@ int gdbstub_state(struct kgdb_state *ks, char *cmd) case 'c': strcpy(remcom_in_buffer, cmd); return 0; - case '?': - gdb_cmd_status(ks); - break; - case '\0': - strcpy(remcom_out_buffer, ""); - break; + case '$': + strcpy(remcom_in_buffer, cmd); + gdbstub_use_prev_in_buf = strlen(remcom_in_buffer); + gdbstub_prev_in_buf_pos = 0; + return 0; } dbg_io_ops->write_char('+'); put_packet(remcom_out_buffer); |