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target: Rework 'set' variable of break-/watchpoints

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The 'set' variable name suggests a boolean data type which determines
whether a breakpoint (or watchpoint) is active. However, it is also
used to store the number of the breakpoint.

This encoding leads to inconsistent value assignments: boolean and
integer values are mixed. Also, associated hardware comparator
numbers, which are usually numbered from 0, cannot be used directly.
An additional offset is required to store the comparator numbers.

In order to make the code more readable and the value assignment more
consistent, change the variable name to 'is_set', its data type to 'bool'
and introduce a dedicated variable for the break-/watchpoint
number.

In order to make the review easier, the data types of various related
variables (e.g. number of breakpoints) are not changed.

While at it, fix a few coding style issues.

Change-Id: I2193f5639247cce6b80580d4c1c6afee916aeb82
Signed-off-by: Marc Schink <dev@zapb.de>
Reviewed-on: https://review.openocd.org/c/openocd/+/6319
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
This commit is contained in:
Marc Schink
2021-06-13 11:21:18 +02:00
committed by Antonio Borneo
parent ab43721be6
commit fb43f1ff4e
21 changed files with 258 additions and 242 deletions
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6
src/target/arm_dpm.c
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@@ -398,7 +398,7 @@ fail:
* or running debugger code.
*/
static int dpm_maybe_update_bpwp(struct arm_dpm *dpm, bool bpwp,
struct dpm_bpwp *xp, int *set_p)
struct dpm_bpwp *xp, bool *set_p)
{
int retval = ERROR_OK;
bool disable;
@@ -473,7 +473,7 @@ int arm_dpm_write_dirty_registers(struct arm_dpm *dpm, bool bpwp)
struct breakpoint *bp = dbp->bp;
retval = dpm_maybe_update_bpwp(dpm, bpwp, &dbp->bpwp,
bp ? &bp->set : NULL);
bp ? &bp->is_set : NULL);
if (retval != ERROR_OK)
goto done;
}
@@ -485,7 +485,7 @@ int arm_dpm_write_dirty_registers(struct arm_dpm *dpm, bool bpwp)
struct watchpoint *wp = dwp->wp;
retval = dpm_maybe_update_bpwp(dpm, bpwp, &dwp->bpwp,
wp ? &wp->set : NULL);
wp ? &wp->is_set : NULL);
if (retval != ERROR_OK)
goto done;
}