diff options
Diffstat (limited to 'core/arch/arm/kernel/trace_ext.c')
| -rw-r--r-- | core/arch/arm/kernel/trace_ext.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/core/arch/arm/kernel/trace_ext.c b/core/arch/arm/kernel/trace_ext.c index 8b8454c..6cedba3 100644 --- a/core/arch/arm/kernel/trace_ext.c +++ b/core/arch/arm/kernel/trace_ext.c @@ -27,21 +27,40 @@ #include <stdbool.h> #include <trace.h> #include <console.h> +#include <kernel/spinlock.h> #include <kernel/thread.h> +#include <mm/core_mmu.h> const char trace_ext_prefix[] = "TEE-CORE"; int trace_level = TRACE_LEVEL; +static unsigned int puts_lock = SPINLOCK_UNLOCK; void trace_ext_puts(const char *str) { + uint32_t itr_status = thread_mask_exceptions(THREAD_EXCP_ALL); + bool mmu_enabled = cpu_mmu_enabled(); + bool was_contended = false; const char *p; + if (mmu_enabled && !cpu_spin_trylock(&puts_lock)) { + was_contended = true; + cpu_spin_lock(&puts_lock); + } + console_flush(); + if (was_contended) + console_putc('*'); + for (p = str; *p; p++) console_putc(*p); console_flush(); + + if (mmu_enabled) + cpu_spin_unlock(&puts_lock); + + thread_unmask_exceptions(itr_status); } int trace_ext_get_thread_id(void) |