diff options
Diffstat (limited to 'arch/arm/probes/kprobes/test-core.c')
| -rw-r--r-- | arch/arm/probes/kprobes/test-core.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/arch/arm/probes/kprobes/test-core.c b/arch/arm/probes/kprobes/test-core.c index 7c5ddd5a6afd..e495127d7571 100644 --- a/arch/arm/probes/kprobes/test-core.c +++ b/arch/arm/probes/kprobes/test-core.c @@ -1056,15 +1056,6 @@ static int test_case_run_count; static bool test_case_is_thumb; static int test_instance; -/* - * We ignore the state of the imprecise abort disable flag (CPSR.A) because this - * can change randomly as the kernel doesn't take care to preserve or initialise - * this across context switches. Also, with Security Extentions, the flag may - * not be under control of the kernel; for this reason we ignore the state of - * the FIQ disable flag CPSR.F as well. - */ -#define PSR_IGNORE_BITS (PSR_A_BIT | PSR_F_BIT) - static unsigned long test_check_cc(int cc, unsigned long cpsr) { int ret = arm_check_condition(cc << 28, cpsr); @@ -1271,11 +1262,21 @@ test_case_pre_handler(struct kprobe *p, struct pt_regs *regs) static int __kprobes test_after_pre_handler(struct kprobe *p, struct pt_regs *regs) { + struct test_arg *args; + if (container_of(p, struct test_probe, kprobe)->hit == test_instance) return 0; /* Already run for this test instance */ result_regs = *regs; + + /* Mask out results which are indeterminate */ result_regs.ARM_cpsr &= ~PSR_IGNORE_BITS; + for (args = current_args; args[0].type != ARG_TYPE_END; ++args) + if (args[0].type == ARG_TYPE_REG_MASKED) { + struct test_arg_regptr *arg = + (struct test_arg_regptr *)args; + result_regs.uregs[arg->reg] &= arg->val; + } /* Undo any changes done to SP by the test case */ regs->ARM_sp = (unsigned long)current_stack; |