diff options
| author | Steven Stallion <stallion@squareup.com> | 2016-07-22 15:43:11 -0500 |
|---|---|---|
| committer | Paul Fertser <fercerpav@gmail.com> | 2016-12-08 12:32:58 +0000 |
| commit | c0e7ccbd87cf491b065bf18bbdb6a73b741c2698 (patch) | |
| tree | 45c8c4311f61b1990a1dca7f00a499aea3d28302 /src/target/armv7m.c | |
| parent | dc0a009ef411e323f7626000dfe2c0dfd1b044e5 (diff) | |
semihosting: support fileio operation
This patch adds support for bridging semihosting to GDB's File-I/O
remote protocol extension. For the most part operations match up 1:1,
however some require a working area to complete successfully, namely
operations that devolve to read, stat, and gettimeofday.
A new command was added to enable support for fileio named `arm
semihosting_fileio`, which ensures that the default behavior remains
intact for those that prefer it.
Finally, redundant logging was removed from the target_arch_state
function; this permits ARM targets to quiesce log output when polling
for a fileio reply. This prevents filling the logs with halt/resume
messages when using semihosting fileio.
Change-Id: Ifbb864fc2373336a501cc0332675b887b552e1ee
Signed-off-by: Steven Stallion <stallion@squareup.com>
Reviewed-on: http://openocd.zylin.com/3566
Tested-by: jenkins
Reviewed-by: Steven Stallion <sstallion@gmail.com>
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Diffstat (limited to 'src/target/armv7m.c')
| -rw-r--r-- | src/target/armv7m.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/target/armv7m.c b/src/target/armv7m.c index 60b244aa..64d18d75 100644 --- a/src/target/armv7m.c +++ b/src/target/armv7m.c @@ -536,11 +536,15 @@ int armv7m_arch_state(struct target *target) struct arm *arm = &armv7m->arm; uint32_t ctrl, sp; + /* avoid filling log waiting for fileio reply */ + if (arm->semihosting_hit_fileio) + return ERROR_OK; + ctrl = buf_get_u32(arm->core_cache->reg_list[ARMV7M_CONTROL].value, 0, 32); sp = buf_get_u32(arm->core_cache->reg_list[ARMV7M_R13].value, 0, 32); LOG_USER("target halted due to %s, current mode: %s %s\n" - "xPSR: %#8.8" PRIx32 " pc: %#8.8" PRIx32 " %csp: %#8.8" PRIx32 "%s", + "xPSR: %#8.8" PRIx32 " pc: %#8.8" PRIx32 " %csp: %#8.8" PRIx32 "%s%s", debug_reason_name(target), arm_mode_name(arm->core_mode), armv7m_exception_string(armv7m->exception_number), @@ -548,7 +552,8 @@ int armv7m_arch_state(struct target *target) buf_get_u32(arm->pc->value, 0, 32), (ctrl & 0x02) ? 'p' : 'm', sp, - arm->is_semihosting ? ", semihosting" : ""); + arm->is_semihosting ? ", semihosting" : "", + arm->is_semihosting_fileio ? " fileio" : ""); return ERROR_OK; } |