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Diffstat (limited to 'c/src/exec/score/cpu/c4x/rtems/score/c4x.h')
| -rw-r--r-- | c/src/exec/score/cpu/c4x/rtems/score/c4x.h | 365 |
1 files changed, 0 insertions, 365 deletions
diff --git a/c/src/exec/score/cpu/c4x/rtems/score/c4x.h b/c/src/exec/score/cpu/c4x/rtems/score/c4x.h deleted file mode 100644 index 757b8ea012..0000000000 --- a/c/src/exec/score/cpu/c4x/rtems/score/c4x.h +++ /dev/null @@ -1,365 +0,0 @@ -/* c4x.h - * - * This file is an example (i.e. "no CPU") of the file which is - * created for each CPU family port of RTEMS. - * - * - * COPYRIGHT (c) 1989-1999. - * 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.OARcorp.com/rtems/license.html. - * - * $Id$ - * - */ - -#ifndef _INCLUDE_C4X_h -#define _INCLUDE_C4X_h - -#ifdef __cplusplus -extern "C" { -#endif - -/* - * This file contains the information required to build - * RTEMS for a particular member of the "no cpu" - * family when executing in protected mode. It does - * this by setting variables to indicate which implementation - * dependent features are present in a particular member - * of the family. - */ - -#if defined(_C30) -#define CPU_MODEL_NAME "C30" - -#elif defined(_C31) -#define CPU_MODEL_NAME "C31" - -#elif defined(_C32) -#define CPU_MODEL_NAME "C32" - -#elif defined(_C33) -#define CPU_MODEL_NAME "C33" - -#elif defined(_C40) -#define CPU_MODEL_NAME "C40" - -#elif defined(_C44) -#define CPU_MODEL_NAME "C44" - -#else - -#error "Unsupported CPU Model" - -#endif - -/* - * Define the name of the CPU family. - */ - -#define CPU_NAME "Texas Instruments C3x/C4x" - -/* - * This port is a little unusual in that even though there are "floating - * point registers", the notion of floating point is very inherent to - * applications. In addition, the calling conventions require that - * only a few extended registers be preserved across subroutine calls. - * The overhead of including these few registers in the basic - * context is small compared to the overhead of managing the notion - * of separate floating point contexts. So we decided to pretend that - * there is no FPU on the C3x or C4x. - */ - -#define C4X_HAS_FPU 0 - -/* - * Routines to manipulate the bits in the Status Word (ST). - */ - -#define C4X_ST_C 0x0001 -#define C4X_ST_V 0x0002 -#define C4X_ST_Z 0x0004 -#define C4X_ST_N 0x0008 -#define C4X_ST_UF 0x0010 -#define C4X_ST_LV 0x0020 -#define C4X_ST_LUF 0x0040 -#define C4X_ST_OVM 0x0080 -#define C4X_ST_RM 0x0100 -#define C4X_ST_CF 0x0400 -#define C4X_ST_CE 0x0800 -#define C4X_ST_CC 0x1000 -#define C4X_ST_GIE 0x2000 - -#ifndef _TMS320C40 -#define C3X_IE_INTERRUPT_MASK_BITS 0xffff -#define C3x_IE_INTERRUPTS_ALL_ENABLED 0x0000 -#define C3x_IE_INTERRUPTS_ALL_DISABLED 0xffff -#endif - -#ifndef ASM - -/* - * A nop macro. - */ - -#define c4x_nop() \ - __asm__("nop"); - -/* - * Routines to set and clear individual bits in the ST (status word). - * - * cpu_st_bit_clear - clear bit in ST - * cpu_st_bit_set - set bit in ST - * cpu_st_get - obtain entire ST - */ - -#ifdef _TMS320C40 -#define c4x_gie_nop() -#else -#define c4x_gie_nop() { c4x_nop(); c4x_nop(); } -#endif - -#define cpu_st_bit_clear(_st_bit) \ - do { \ - __asm__("andn %0,st" : : "g" (_st_bit) : "cc"); \ - c4x_gie_nop(); \ - } while (0) - -#define cpu_st_bit_set(_st_bit) \ - do { \ - __asm__("or %0,st" : : "g" (_st_bit) : "cc"); \ - c4x_gie_nop(); \ - } while (0) - -static inline unsigned int cpu_st_get(void) -{ - register unsigned int st_value; - __asm__("ldi st, %0" : "=r" (st_value)); - return st_value; -} - -/* - * Routines to manipulate the Global Interrupt Enable (GIE) bit in - * the Status Word (ST). - * - * c4x_global_interrupts_get - returns current GIE setting - * c4x_global_interrupts_disable - disables global interrupts - * c4x_global_interrupts_enable - enables global interrupts - * c4x_global_interrupts_restore - restores GIE to pre-disable state - * c4x_global_interrupts_flash - temporarily enable global interrupts - */ - -#define c4x_global_interrupts_get() \ - (cpu_st_get() & C4X_ST_GIE) - -#define c4x_global_interrupts_disable() \ - cpu_st_bit_clear(C4X_ST_GIE) - -#define c4x_global_interrupts_enable() \ - cpu_st_bit_set(C4X_ST_GIE) - -#define c4x_global_interrupts_restore(_old_level) \ - cpu_st_bit_set(_old_level) - -#define c4x_global_interrupts_flash(_old_level) \ - do { \ - cpu_st_bit_set(_old_level); \ - cpu_st_bit_clear(C4X_ST_GIE); \ - } while (0) - -#ifndef _TMS320C40 - -/* - * Routines to set and get the IF register - * - * c3x_get_if - obtains IF register - * c3x_set_if - sets IF register - */ - -static inline unsigned int c3x_get_if(void) -{ - register unsigned int _if_value; - - __asm__( "ldi if, %0" : "=r" (_if_value) ); - return _if_value; -} - -static inline void c3x_set_if(unsigned int _if_value) -{ - __asm__( "ldi %0, if" : : "g" (_if_value) : "if", "cc"); -} - -/* - * Routines to set and get the IE register - * - * c3x_get_ie - obtains IE register - * c3x_set_ie - sets IE register - */ - -static inline unsigned int c3x_get_ie(void) -{ - register unsigned int _ie_value; - - __asm__ volatile ( "ldi ie, %0" : "=r" (_ie_value) ); - return _ie_value; -} - -static inline void c3x_set_ie(unsigned int _ie_value) -{ - __asm__ volatile ( "ldi %0, ie" : : "g" (_ie_value) : "ie", "cc"); -} - -/* - * Routines to manipulates the mask portion of the IE register. - * - * c3x_ie_mask_all - returns previous IE mask - * c3x_ie_mask_restore - restores previous IE mask - * c3x_ie_mask_flash - temporarily restores previous IE mask - * c3x_ie_mask_set - sets a specific set of the IE mask - */ - -#define c3x_ie_mask_all( _isr_cookie ) \ - do { \ - __asm__("ldi ie,%0\n" \ - "\tandn 0ffffh, ie" \ - : "=r" (_isr_cookie): : "ie", "cc" ); \ - } while (0) - -#define c3x_ie_mask_restore( _isr_cookie ) \ - do { \ - __asm__("or %0, ie" \ - : : "g" (_isr_cookie) : "ie", "cc" ); \ - } while (0) - -#define c3x_ie_mask_flash( _isr_cookie ) \ - do { \ - __asm__("or %0, ie\n" \ - "\tandn 0ffffh, ie" \ - : : "g" (_isr_cookie) : "ie", "cc" ); \ - } while (0) - -#define c3x_ie_mask_set( _new_mask ) \ - do { unsigned int _ie_mask; \ - unsigned int _ie_value; \ - \ - if ( _new_mask == 0 ) _ie_mask = 0; \ - else _ie_mask = 0xffff; \ - _ie_value = c3x_get_ie(); \ - _ie_value &= C4X_IE_INTERRUPT_MASK_BITS; \ - _ie_value |= _ie_mask; \ - c3x_set_ie(_ie_value); \ - } while (0) -#endif -/* end of C3x specific interrupt flag routines */ - -/* - * This is a section of C4x specific interrupt flag management routines. - */ - -#ifdef _TMS320C40 - -/* - * Routines to set and get the IIF register - * - * c4x_get_iif - obtains IIF register - * c4x_set_iif - sets IIF register - */ - -static inline unsigned int c4x_get_iif(void) -{ - register unsigned int _iif_value; - - __asm__( "ldi iif, %0" : "=r" (_iif_value) ); - return _iif_value; -} - -static inline void c4x_set_iif(unsigned int _iif_value) -{ - __asm__( "ldi %0, iif" : : "g" (_iif_value) : "iif", "cc"); -} - -/* - * Routines to set and get the IIE register - * - * c4x_get_iie - obtains IIE register - * c4x_set_iie - sets IIE register - */ - -static inline unsigned int c4x_get_iie(void) -{ - register unsigned int _iie_value; - - __asm__( "ldi iie, %0" : "=r" (_iie_value) ); - return _iie_value; -} - -static inline void c4x_set_iie(unsigned int _iie_value) -{ - __asm__( "ldi %0, iie" : : "g" (_iie_value) : "iie", "cc"); -} - -/* - * Routines to manipulates the mask portion of the IIE register. - * - * c4x_ie_mask_all - returns previous IIE mask - * c4x_ie_mask_restore - restores previous IIE mask - * c4x_ie_mask_flash - temporarily restores previous IIE mask - * c4x_ie_mask_set - sets a specific set of the IIE mask - */ - -#if 0 -#warning "C4x IIE masking routines not implemented." -#define c4x_iie_mask_all( _isr_cookie ) -#define c4x_iie_mask_restore( _isr_cookie ) -#define c4x_iie_mask_flash( _isr_cookie ) -#define c4x_iie_mask_set( _new_mask ) -#endif - -#endif -/* end of C4x specific interrupt flag routines */ - -/* - * Routines to access the Interrupt Trap Table Pointer - * - * c4x_get_ittp - get ITTP - * c4x_set_ittp - set ITTP - */ - -static inline void * c4x_get_ittp(void) -{ - register unsigned int _if_value; - - __asm__( "ldi if, %0" : "=r" (_if_value) ); - return (void *)((_if_value & 0xffff0000) >> 8); -} - -static inline void c4x_set_ittp(void *_ittp_value) -{ - unsigned int _if_value; - unsigned int _ittp_field; - -#ifdef _TMS320C40 - _if_value = c4x_get_iif(); -#else - _if_value = c3x_get_if(); -#endif - _if_value &= 0xffff; - _ittp_field = (((unsigned int) _ittp_value) >> 8); - _if_value |= _ittp_field << 16 ; -#ifdef _TMS320C40 - c4x_set_iif( _if_value ); -#else - c3x_set_if( _if_value ); -#endif -} - -#endif /* ifndef ASM */ - -#ifdef __cplusplus -} -#endif - -#endif /* ! _INCLUDE_C4X_h */ -/* end of include file */ |