d4cd6f0320
This patch extends the cortex_m3 maskisr command by a new option 'auto'. The 'auto' option handles interrupts during stepping in a way they are processed but don't disturb the program flow during debugging. Before one had to choose to either enable or disable interrupts. The former steps into interrupt handlers when they trigger. This disturbs the flow during debugging, making it hard to follow some piece of code when interrupts occur often. When interrupts are disabled, the flow isn't disturbed but code relying on interrupt handlers to be processed will stop working. For example a delay function counting the number of timer interrupts will never complete, RTOS task switching will not occur and output I/O queues of interrupt driven I/O will stall or overflow. Using the 'maskisr' command also typically requires gdb hooks to be supplied by the user to switch interrupts off during the step and to enable them again afterward. The new 'auto' option of the 'maskisr' command solves the above problems. When set, the step command allows pending interrupt handlers to be executed before the step, then the step is taken with interrupts disabled and finally interrupts are enabled again. This way interrupt processing stays in the background without disturbing the flow of debugging. No gdb hooks are required. The 'auto' option is the default, since it's believed that handling interrupts in this way is suitable for most users. The principle used for interrupt handling could probably be used for other targets too. Signed-off-by: Spencer Oliver <ntfreak@users.sourceforge.net> |
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| manual | ||
| INSTALL.txt | ||
| Makefile.am | ||
| fdl.texi | ||
| openocd.1 | ||
| openocd.texi | ||