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aarch64: discard async aborts on entering debug state

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recommended for Corte-A8 cores, not sure if necessary
for ARMv8 based cores as well.

Change-Id: Ibcb36170c5fac6a6b132de17f734c70a56919f9b
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
This commit is contained in:
Matthias Welwarsky
2016-10-20 16:23:40 +02:00
parent 0a53bae0ea
commit 9f4b5b509f
4 changed files with 17 additions and 2 deletions
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7
src/target/aarch64.c
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@@ -663,11 +663,16 @@ static int aarch64_debug_entry(struct target *target)
/* make sure to clear all sticky errors */
retval = mem_ap_write_atomic_u32(armv8->debug_ap,
armv8->debug_base + CPUV8_DBG_DRCR, DRCR_CSE);
/* discard async exceptions */
if (retval == ERROR_OK)
retval = dpm->instr_cpsr_sync(dpm);
if (retval != ERROR_OK)
return retval;
/* Examine debug reason */
armv8_dpm_report_dscr(&armv8->dpm, aarch64->cpudbg_dscr);
armv8_dpm_report_dscr(dpm, aarch64->cpudbg_dscr);
/* save address of instruction that triggered the watchpoint? */
if (target->debug_reason == DBG_REASON_WATCHPOINT) {