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target-arm: Implement handling of fired watchpoints

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Implement the ARM debug exception handler for dealing with
fired watchpoints.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2014-09-12 14:06:49 +01:00
parent 73c5211ba9
commit 3ff6fc9148
4 changed files with 204 additions and 1 deletions
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9
target-arm/internals.h
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@ -307,6 +307,12 @@ static inline uint32_t syn_swstep(int same_el, int isv, int ex)
| (isv << 24) | (ex << 6) | 0x22;
}
static inline uint32_t syn_watchpoint(int same_el, int cm, int wnr)
{
return (EC_WATCHPOINT << ARM_EL_EC_SHIFT) | (same_el << ARM_EL_EC_SHIFT)
| (cm << 8) | (wnr << 6) | 0x22;
}
/* Update a QEMU watchpoint based on the information the guest has set in the
* DBGWCR<n>_EL1 and DBGWVR<n>_EL1 registers.
*/
@ -317,4 +323,7 @@ void hw_watchpoint_update(ARMCPU *cpu, int n);
*/
void hw_watchpoint_update_all(ARMCPU *cpu);
/* Callback function for when a watchpoint or breakpoint triggers. */
void arm_debug_excp_handler(CPUState *cs);
#endif