diff options
| author | Ingo Molnar <mingo@elte.hu> | 2011-08-05 10:32:54 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-08-05 10:33:55 +0200 |
| commit | 3272cab4063467410802367a8d69f06c65b2a866 (patch) | |
| tree | 1c665f8572b0aab2a5343d32b5eaa6713669b04f /kernel/debug/gdbstub.c | |
| parent | trace events: Update version number reference to new 3.x scheme for EVENT_POW... (diff) | |
| parent | Do 'shm_init_ns()' in an early pure_initcall (diff) | |
| download | linux-3272cab4063467410802367a8d69f06c65b2a866.tar.xz linux-3272cab4063467410802367a8d69f06c65b2a866.zip | |
Merge branch 'linus' into perf/urgent
Merge reason: Include most of the merge window trees, to do fixes on top.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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 a11db956dd62..34872482315e 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); |