diff options
Diffstat (limited to 'cpukit/score/cpu/no_cpu/rtems/score/cpuimpl.h')
| -rw-r--r-- | cpukit/score/cpu/no_cpu/rtems/score/cpuimpl.h | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/cpukit/score/cpu/no_cpu/rtems/score/cpuimpl.h b/cpukit/score/cpu/no_cpu/rtems/score/cpuimpl.h index f1b03435ba..85214d7f6c 100644 --- a/cpukit/score/cpu/no_cpu/rtems/score/cpuimpl.h +++ b/cpukit/score/cpu/no_cpu/rtems/score/cpuimpl.h @@ -5,7 +5,7 @@ */ /* - * Copyright (c) 2015, 2016 embedded brains GmbH + * Copyright (c) 2013, 2016 embedded brains GmbH * * The license and distribution terms for this file may be * found in the file LICENSE in this distribution or at @@ -17,6 +17,14 @@ #include <rtems/score/cpu.h> +/** + * @brief The size of the CPU specific per-CPU control. + * + * This define must be visible to assember files since it is used to derive + * structure offsets. + */ +#define CPU_PER_CPU_CONTROL_SIZE 0 + #ifndef ASM #ifdef __cplusplus @@ -24,6 +32,20 @@ extern "C" { #endif /** + * @brief The CPU specific per-CPU control. + * + * The CPU port can place here all state information that must be available and + * maintained for each processor in the system. This structure must contain at + * least one field for C/C++ compatibility. In GNU C empty structures have a + * size of zero. In C++ structures have a non-zero size. In case + * CPU_PER_CPU_CONTROL_SIZE is defined to zero, then this structure is not + * used. + */ +typedef struct { + /* CPU specific per-CPU state */ +} CPU_Per_CPU_control; + +/** * @brief Special register pointing to the per-CPU control of the current * processor. * |