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target-arm: Log AArch64 exception returns

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We already log exception entry; add logging of the AArch64 exception
return path as well.

Backports commit c9b61d9aa1ad234b0961f8add023cdc999cda3da from qemu
This commit is contained in:
Peter Maydell 2018-03-01 11:08:30 -05:00 committed by Lioncash
parent 86670028f7
commit 554ad1f34e
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 9 additions and 0 deletions
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9
qemu/target-arm/op_helper.c
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@ -17,6 +17,7 @@
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "qemu/log.h"
#include "cpu.h"
#include "exec/helper-proto.h"
#include "internals.h"
@ -980,6 +981,9 @@ void HELPER(exception_return)(CPUARMState *env)
} else {
env->regs[15] = env->elr_el[cur_el] & ~0x3;
}
qemu_log_mask(CPU_LOG_INT, "Exception return from AArch64 EL%d to "
"AArch32 EL%d PC 0x%" PRIx32 "\n",
cur_el, new_el, env->regs[15]);
} else {
env->aarch64 = 1;
pstate_write(env, spsr);
@ -988,6 +992,9 @@ void HELPER(exception_return)(CPUARMState *env)
}
aarch64_restore_sp(env, new_el);
env->pc = env->elr_el[cur_el];
qemu_log_mask(CPU_LOG_INT, "Exception return from AArch64 EL%d to "
"AArch64 EL%d PC 0x%" PRIx64 "\n",
cur_el, new_el, env->pc);
}
arm_call_el_change_hook(arm_env_get_cpu(env));
@ -1010,6 +1017,8 @@ illegal_return:
if (!arm_singlestep_active(env)) {
env->pstate &= ~PSTATE_SS;
}
qemu_log_mask(LOG_GUEST_ERROR, "Illegal exception return at EL%d: "
"resuming execution at 0x%" PRIx64 "\n", cur_el, env->pc);
}
/* Return true if the linked breakpoint entry lbn passes its checks */