diff options
Diffstat (limited to 'bl31/aarch64/runtime_exceptions.S')
| -rw-r--r-- | bl31/aarch64/runtime_exceptions.S | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/bl31/aarch64/runtime_exceptions.S b/bl31/aarch64/runtime_exceptions.S index 799062ef..f333bf16 100644 --- a/bl31/aarch64/runtime_exceptions.S +++ b/bl31/aarch64/runtime_exceptions.S @@ -31,6 +31,7 @@ #include <arch.h> #include <asm_macros.S> #include <context.h> +#include <cpu_data.h> #include <interrupt_mgmt.h> #include <platform_def.h> #include <runtime_svc.h> @@ -47,6 +48,21 @@ msr daifclr, #DAIF_ABT_BIT str x30, [sp, #CTX_GPREGS_OFFSET + CTX_GPREG_LR] + +#if ENABLE_RUNTIME_INSTRUMENTATION + + /* + * Read the timestamp value and store it in per-cpu data. + * The value will be extracted from per-cpu data by the + * C level SMC handler and saved to the PMF timestamp region. + */ + mrs x30, cntpct_el0 + str x29, [sp, #CTX_GPREGS_OFFSET + CTX_GPREG_X29] + mrs x29, tpidr_el3 + str x30, [x29, #CPU_DATA_PMF_TS0_OFFSET] + ldr x29, [sp, #CTX_GPREGS_OFFSET + CTX_GPREG_X29] +#endif + mrs x30, esr_el3 ubfx x30, x30, #ESR_EC_SHIFT, #ESR_EC_LENGTH |