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Diffstat (limited to 'include/rtems/score/v850.h')
| -rw-r--r-- | include/rtems/score/v850.h | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/include/rtems/score/v850.h b/include/rtems/score/v850.h new file mode 100644 index 0000000000..26ab6c209d --- /dev/null +++ b/include/rtems/score/v850.h @@ -0,0 +1,137 @@ +/** + * @file + * + * @brief V850 Set up Basic CPU Dependency Settings Based on Compiler Settings + * + * This file sets up basic CPU dependency settings based on + * compiler settings. For example, it can determine if + * floating point is available. This particular implementation + * is specified to the Renesas v850 port. + */ + +/* + * COPYRIGHT (c) 1989-2012. + * On-Line Applications Research Corporation (OAR). + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#ifndef _RTEMS_SCORE_V850_H +#define _RTEMS_SCORE_V850_H + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * This file contains the information required to build + * RTEMS for a particular member of the NO CPU family. + * It does this by setting variables to indicate which + * implementation dependent features are present in a particular + * member of the family. + * + * This is a good place to list all the known CPU models + * that this port supports and which RTEMS CPU model they correspond + * to. + */ + +#if defined(rtems_multilib) +/* + * Figure out all CPU Model Feature Flags based upon compiler + * predefines. + */ +#define CPU_MODEL_NAME "rtems_multilib" +#define V850_HAS_FPU 0 +#define V850_HAS_BYTE_SWAP_INSTRUCTION 0 + +#elif defined(__v850e2v3__) +#define CPU_MODEL_NAME "v850e2v3" +#define V850_HAS_FPU 1 +#define V850_HAS_BYTE_SWAP_INSTRUCTION 1 + +#elif defined(__v850e2__) +#define CPU_MODEL_NAME "v850e2" +#define V850_HAS_FPU 0 +#define V850_HAS_BYTE_SWAP_INSTRUCTION 1 + +#elif defined(__v850es__) +#define CPU_MODEL_NAME "v850es" +#define V850_HAS_FPU 0 +#define V850_HAS_BYTE_SWAP_INSTRUCTION 1 + +#elif defined(__v850e1__) +#define CPU_MODEL_NAME "v850e1" +#define V850_HAS_FPU 0 +#define V850_HAS_BYTE_SWAP_INSTRUCTION 1 + +#elif defined(__v850e__) +#define CPU_MODEL_NAME "v850e" +#define V850_HAS_FPU 0 +#define V850_HAS_BYTE_SWAP_INSTRUCTION 1 + +#else +#define CPU_MODEL_NAME "v850" +#define V850_HAS_FPU 0 +#define V850_HAS_BYTE_SWAP_INSTRUCTION 0 + +#endif + +/* + * Define the name of the CPU family. + */ +#define CPU_NAME "v850 CPU" + +/* + * Method to set the Program Status Word (PSW) + */ +#define v850_set_psw( _psw ) \ + __asm__ __volatile__( "ldsr %0, psw" : : "r" (_psw) ) + +/* + * Method to obtain the Program Status Word (PSW) + */ +#define v850_get_psw( _psw ) \ + __asm__ __volatile__( "stsr psw, %0" : "=&r" (_psw) ) + +/* + * Masks and bits in the Program Status Word (PSW) + */ +#define V850_PSW_ZERO_MASK 0x01 +#define V850_PSW_IS_ZERO 0x01 +#define V850_PSW_IS_NOT 0x00 + +#define V850_PSW_SIGN_MASK 0x02 +#define V850_PSW_SIGN_IS_NEGATIVE 0x02 +#define V850_PSW_SIGN_IS_ZERO_OR_POSITIVE 0x00 + +#define V850_PSW_OVERFLOW_MASK 0x02 +#define V850_PSW_OVERFLOW_OCCURRED 0x02 +#define V850_PSW_OVERFLOW_DID_NOT_OCCUR 0x00 + +#define V850_PSW_CARRY_OR_BORROW_MASK 0x04 +#define V850_PSW_CARRY_OR_BORROW_OCCURRED 0x04 +#define V850_PSW_CARRY_OR_BORROW_DID_NOT_OCCUR 0x00 + +#define V850_PSW_SATURATION_MASK 0x10 +#define V850_PSW_SATURATION_OCCURRED 0x10 +#define V850_PSW_SATURATION_DID_NOT_OCCUR 0x00 + +#define V850_PSW_INTERRUPT_DISABLE_MASK 0x20 +#define V850_PSW_INTERRUPT_DISABLE 0x20 +#define V850_PSW_INTERRUPT_ENABLE 0x00 + +#define V850_PSW_EXCEPTION_IN_PROCESS_MASK 0x40 +#define V850_PSW_EXCEPTION_IN_PROCESS 0x40 +#define V850_PSW_EXCEPTION_NOT_IN_PROCESS 0x00 + +#define V850_PSW_NMI_IN_PROCESS_MASK 0x80 +#define V850_PSW_NMI_IN_PROCESS 0x80 +#define V850_PSW_NMI_NOT_IN_PROCESS 0x00 + +#ifdef __cplusplus +} +#endif + +#endif /* _RTEMS_SCORE_V850_H */ |