diff options
Diffstat (limited to 'c/src/exec/score/cpu/hppa1.1/cpu.h')
| -rw-r--r-- | c/src/exec/score/cpu/hppa1.1/cpu.h | 607 |
1 files changed, 0 insertions, 607 deletions
diff --git a/c/src/exec/score/cpu/hppa1.1/cpu.h b/c/src/exec/score/cpu/hppa1.1/cpu.h deleted file mode 100644 index 1b6eb4d175..0000000000 --- a/c/src/exec/score/cpu/hppa1.1/cpu.h +++ /dev/null @@ -1,607 +0,0 @@ -/* cpu.h - * - * This include file contains information pertaining to the HP - * PA-RISC processor (Level 1.1). - * - * COPYRIGHT (c) 1994 by Division Incorporated - * - * To anyone who acknowledges that this file is provided "AS IS" - * without any express or implied warranty: - * permission to use, copy, modify, and distribute this file - * for any purpose is hereby granted without fee, provided that - * the above copyright notice and this notice appears in all - * copies, and that the name of Division Incorporated not be - * used in advertising or publicity pertaining to distribution - * of the software without specific, written prior permission. - * Division Incorporated makes no representations about the - * suitability of this software for any purpose. - * - * - * Note: - * This file is included by both C and assembler code ( -DASM ) - * - * $Id$ - */ - -#ifndef __CPU_h -#define __CPU_h - -#ifdef __cplusplus -extern "C" { -#endif - -#include <rtems/score/hppa.h> /* pick up machine definitions */ -#ifndef ASM -#include <rtems/score/hppatypes.h> -#endif - -/* conditional compilation parameters */ - -#define CPU_INLINE_ENABLE_DISPATCH FALSE -#define CPU_UNROLL_ENQUEUE_PRIORITY TRUE - -/* - * RTEMS manages an interrupt stack in software for the HPPA. - */ - -#define CPU_HAS_SOFTWARE_INTERRUPT_STACK TRUE -#define CPU_HAS_HARDWARE_INTERRUPT_STACK FALSE -#define CPU_ALLOCATE_INTERRUPT_STACK TRUE - -/* - * HPPA has hardware FP, it is assumed to exist by GCC so all tasks - * may implicitly use it (especially for integer multiplies). Because - * the FP context is technically part of the basic integer context - * on this CPU, we cannot use the deferred FP context switch algorithm. - */ - -#define CPU_HARDWARE_FP TRUE -#define CPU_ALL_TASKS_ARE_FP TRUE -#define CPU_IDLE_TASK_IS_FP FALSE -#define CPU_USE_DEFERRED_FP_SWITCH FALSE - -#define CPU_PROVIDES_IDLE_THREAD_BODY FALSE -#define CPU_STACK_GROWS_UP TRUE -#define CPU_STRUCTURE_ALIGNMENT __attribute__ ((__aligned__ (32))) - -/* constants */ - -#define CPU_MODES_INTERRUPT_LEVEL 0x00000001 /* interrupt level in mode */ -#define CPU_MODES_INTERRUPT_MASK 0x00000001 /* interrupt level in mode */ - -/* - * PSW contstants - */ - -#define CPU_PSW_BASE (HPPA_PSW_C | HPPA_PSW_Q | HPPA_PSW_P | HPPA_PSW_D) -#define CPU_PSW_INTERRUPTS_ON (CPU_PSW_BASE | HPPA_PSW_I) -#define CPU_PSW_INTERRUPTS_OFF (CPU_PSW_BASE) - -#define CPU_PSW_DEFAULT CPU_PSW_BASE - - -#ifndef ASM - -/* - * Contexts - * - * This means we have the following context items: - * 1. task level context stuff:: Context_Control - * 2. floating point task stuff:: Context_Control_fp - * - * The PA-RISC is very fast so the expense of saving an extra register - * or two is not of great concern at the present. So we are not making - * a distinction between what is saved during a task switch and what is - * saved at each interrupt. Plus saving the entire context should make - * it easier to make gdb aware of RTEMS tasks. - */ - -typedef struct { - unsigned32 flags; /* whatever */ - unsigned32 gr1; /* scratch -- caller saves */ - unsigned32 gr2; /* RP -- return pointer */ - unsigned32 gr3; /* scratch -- callee saves */ - unsigned32 gr4; /* scratch -- callee saves */ - unsigned32 gr5; /* scratch -- callee saves */ - unsigned32 gr6; /* scratch -- callee saves */ - unsigned32 gr7; /* scratch -- callee saves */ - unsigned32 gr8; /* scratch -- callee saves */ - unsigned32 gr9; /* scratch -- callee saves */ - unsigned32 gr10; /* scratch -- callee saves */ - unsigned32 gr11; /* scratch -- callee saves */ - unsigned32 gr12; /* scratch -- callee saves */ - unsigned32 gr13; /* scratch -- callee saves */ - unsigned32 gr14; /* scratch -- callee saves */ - unsigned32 gr15; /* scratch -- callee saves */ - unsigned32 gr16; /* scratch -- callee saves */ - unsigned32 gr17; /* scratch -- callee saves */ - unsigned32 gr18; /* scratch -- callee saves */ - unsigned32 gr19; /* scratch -- caller saves */ - unsigned32 gr20; /* scratch -- caller saves */ - unsigned32 gr21; /* scratch -- caller saves */ - unsigned32 gr22; /* scratch -- caller saves */ - unsigned32 gr23; /* argument 3 */ - unsigned32 gr24; /* argument 2 */ - unsigned32 gr25; /* argument 1 */ - unsigned32 gr26; /* argument 0 */ - unsigned32 gr27; /* DP -- global data pointer */ - unsigned32 gr28; /* return values -- caller saves */ - unsigned32 gr29; /* return values -- caller saves */ - unsigned32 sp; /* gr30 */ - unsigned32 gr31; - - /* Various control registers */ - - unsigned32 sar; /* cr11 */ - unsigned32 ipsw; /* cr22; full 32 bits of psw */ - unsigned32 iir; /* cr19; interrupt instruction register */ - unsigned32 ior; /* cr21; interrupt offset register */ - unsigned32 isr; /* cr20; interrupt space register (not used) */ - unsigned32 pcoqfront; /* cr18; front que offset */ - unsigned32 pcoqback; /* cr18; back que offset */ - unsigned32 pcsqfront; /* cr17; front que space (not used) */ - unsigned32 pcsqback; /* cr17; back que space (not used) */ - unsigned32 itimer; /* cr16; itimer value */ - -} Context_Control; - - -/* Must be double word aligned. - * This will be ok since our allocator returns 8 byte aligned chunks - */ - -typedef struct { - double fr0; /* status */ - double fr1; /* exception information */ - double fr2; /* exception information */ - double fr3; /* exception information */ - double fr4; /* argument */ - double fr5; /* argument */ - double fr6; /* argument */ - double fr7; /* argument */ - double fr8; /* scratch -- caller saves */ - double fr9; /* scratch -- caller saves */ - double fr10; /* scratch -- caller saves */ - double fr11; /* scratch -- caller saves */ - double fr12; /* callee saves -- (PA-RISC 1.1 CPUs) */ - double fr13; /* callee saves -- (PA-RISC 1.1 CPUs) */ - double fr14; /* callee saves -- (PA-RISC 1.1 CPUs) */ - double fr15; /* callee saves -- (PA-RISC 1.1 CPUs) */ - double fr16; /* callee saves -- (PA-RISC 1.1 CPUs) */ - double fr17; /* callee saves -- (PA-RISC 1.1 CPUs) */ - double fr18; /* callee saves -- (PA-RISC 1.1 CPUs) */ - double fr19; /* callee saves -- (PA-RISC 1.1 CPUs) */ - double fr20; /* callee saves -- (PA-RISC 1.1 CPUs) */ - double fr21; /* callee saves -- (PA-RISC 1.1 CPUs) */ - double fr22; /* caller saves -- (PA-RISC 1.1 CPUs) */ - double fr23; /* caller saves -- (PA-RISC 1.1 CPUs) */ - double fr24; /* caller saves -- (PA-RISC 1.1 CPUs) */ - double fr25; /* caller saves -- (PA-RISC 1.1 CPUs) */ - double fr26; /* caller saves -- (PA-RISC 1.1 CPUs) */ - double fr27; /* caller saves -- (PA-RISC 1.1 CPUs) */ - double fr28; /* caller saves -- (PA-RISC 1.1 CPUs) */ - double fr29; /* caller saves -- (PA-RISC 1.1 CPUs) */ - double fr30; /* caller saves -- (PA-RISC 1.1 CPUs) */ - double fr31; /* caller saves -- (PA-RISC 1.1 CPUs) */ -} Context_Control_fp; - -/* - * The following structure defines the set of information saved - * on the current stack by RTEMS upon receipt of each interrupt. - */ - -typedef struct { - Context_Control Integer; - Context_Control_fp Floating_Point; -} CPU_Interrupt_frame; - -/* - * Our interrupt handlers take a 2nd argument: - * a pointer to a CPU_Interrupt_frame - * So we use our own prototype instead of rtems_isr_entry - */ - -typedef void ( *hppa_rtems_isr_entry )( - unsigned32, - CPU_Interrupt_frame * - ); - -/* - * The following table contains the information required to configure - * the HPPA specific parameters. - */ - -typedef struct { - void (*pretasking_hook)( void ); - void (*predriver_hook)( void ); - void (*postdriver_hook)( void ); - void (*idle_task)( void ); - boolean do_zero_of_workspace; - unsigned32 interrupt_stack_size; - unsigned32 extra_mpci_receive_server_stack; - void * (*stack_allocate_hook)( unsigned32 ); - void (*stack_free_hook)( void * ); - /* end of fields required on all CPUs */ - - hppa_rtems_isr_entry spurious_handler; - - unsigned32 itimer_clicks_per_microsecond; /* for use by Clock driver */ -} rtems_cpu_table; - -/* variables */ - -EXTERN Context_Control_fp _CPU_Null_fp_context; -EXTERN unsigned32 _CPU_Default_gr27; -EXTERN void *_CPU_Interrupt_stack_low; -EXTERN void *_CPU_Interrupt_stack_high; - -#endif /* ! ASM */ - -/* - * context sizes - */ - -#ifndef ASM -#define CPU_CONTEXT_SIZE sizeof( Context_Control ) -#define CPU_CONTEXT_FP_SIZE sizeof( Context_Control_fp ) -#endif - -/* - * size of a frame on the stack - */ - -#define CPU_FRAME_SIZE (16 * 4) - -/* - * (Optional) # of bytes for libmisc/stackchk to check - * If not specifed, then it defaults to something reasonable - * for most architectures. - */ - -#define CPU_STACK_CHECK_SIZE (CPU_FRAME_SIZE * 2) - -/* - * extra stack required by the MPCI receive server thread - */ - -#define CPU_MPCI_RECEIVE_SERVER_EXTRA_STACK 0 - -/* - * HPPA has 32 traps, then 32 external interrupts - * Rtems (_ISR_Vector_Table) is aware ONLY of the first 32 - * The BSP is aware of the external interrupts and possibly more. - * - */ - -#define CPU_INTERRUPT_NUMBER_OF_VECTORS (HPPA_INTERNAL_TRAPS) -#define CPU_INTERRUPT_MAXIMUM_VECTOR_NUMBER (CPU_INTERRUPT_NUMBER_OF_VECTORS - 1) - -/* - * Don't be chintzy here; we don't want to debug these problems - * Some of the tests eat almost 4k. - * Plus, the HPPA always allocates chunks of 64 bytes for stack - * growth. - */ - -#define CPU_STACK_MINIMUM_SIZE (8 * 1024) - -/* - * HPPA double's must be on 8 byte boundary - */ - -#define CPU_ALIGNMENT 8 - -/* - * just follow the basic HPPA alignment for the heap and partition - */ - -#define CPU_HEAP_ALIGNMENT CPU_ALIGNMENT -#define CPU_PARTITION_ALIGNMENT CPU_ALIGNMENT - -/* - * HPPA stack is best when 64 byte aligned. - */ - -#define CPU_STACK_ALIGNMENT 64 - -#ifndef ASM - -/* macros */ - -/* - * ISR handler macros - * - * These macros perform the following functions: - * + disable all maskable CPU interrupts - * + restore previous interrupt level (enable) - * + temporarily restore interrupts (flash) - * + set a particular level - */ - -/* Disable interrupts; returning previous psw bits in _isr_level */ -#define _CPU_ISR_Disable( _isr_level ) \ - do { \ - HPPA_ASM_RSM(HPPA_PSW_I, _isr_level); \ - if (_isr_level & HPPA_PSW_I) _isr_level = 0; \ - else _isr_level = 1; \ - } while(0) - -/* Enable interrupts to previous level from _CPU_ISR_Disable - * does not change 'level' */ -#define _CPU_ISR_Enable( _isr_level ) \ - { \ - register int _ignore; \ - if (_isr_level == 0) HPPA_ASM_SSM(HPPA_PSW_I, _ignore); \ - else HPPA_ASM_RSM(HPPA_PSW_I, _ignore); \ - } - -/* restore, then disable interrupts; does not change level */ -#define _CPU_ISR_Flash( _isr_level ) \ - { \ - if (_isr_level == 0) \ - { \ - register int _ignore; \ - HPPA_ASM_SSM(HPPA_PSW_I, _ignore); \ - HPPA_ASM_RSM(HPPA_PSW_I, _ignore); \ - } \ - } - -/* - * Interrupt task levels - * - * Future scheme proposal - * level will be an index into a array. - * Each entry of array will be the interrupt bits - * enabled for that level. There will be 32 bits of external - * interrupts (to be placed in EIEM) and some (optional) bsp - * specific bits - * - * For pixel flow this *may* mean something like: - * level 0: all interrupts enabled (external + rhino) - * level 1: rhino disabled - * level 2: all io interrupts disabled (timer still enabled) - * level 7: *ALL* disabled (timer disabled) - */ - -/* set interrupts on or off; does not return new level */ -#define _CPU_ISR_Set_level( new_level ) \ - { \ - volatile int ignore; \ - if ( new_level ) HPPA_ASM_RSM(HPPA_PSW_I, ignore); \ - else HPPA_ASM_SSM(HPPA_PSW_I, ignore); \ - } - -/* return current level */ -unsigned32 _CPU_ISR_Get_level( void ); - -/* end of ISR handler macros */ - -/* - * Context handler macros - * - * These macros perform the following functions: - * + initialize a context area - * + restart the current thread - * + calculate the initial pointer into a FP context area - * + initialize an FP context area - * - * HPPA port adds two macros which hide the "indirectness" of the - * pointer passed the save/restore FP context assembly routines. - */ - -#define _CPU_Context_Initialize( _the_context, _stack_base, _size, \ - _new_level, _entry_point, _is_fp ) \ - do { \ - unsigned32 _stack; \ - \ - (_the_context)->flags = 0xfeedf00d; \ - (_the_context)->pcoqfront = (unsigned32)(_entry_point); \ - (_the_context)->pcoqback = (unsigned32)(_entry_point) + 4; \ - (_the_context)->pcsqfront = 0; \ - (_the_context)->pcsqback = 0; \ - if ( (_new_level) ) \ - (_the_context)->ipsw = CPU_PSW_INTERRUPTS_OFF; \ - else \ - (_the_context)->ipsw = CPU_PSW_INTERRUPTS_ON; \ - \ - _stack = ((unsigned32)(_stack_base) + (CPU_STACK_ALIGNMENT - 1)); \ - _stack &= ~(CPU_STACK_ALIGNMENT - 1); \ - if ((_stack - (unsigned32) (_stack_base)) < CPU_FRAME_SIZE) \ - _stack += CPU_FRAME_SIZE; \ - \ - (_the_context)->sp = (_stack); \ - (_the_context)->gr27 = _CPU_Default_gr27; \ - } while (0) - -#define _CPU_Context_Restart_self( _the_context ) \ - do { \ - _CPU_Context_restore( (_the_context) ); \ - } while (0) - -#define _CPU_Context_Fp_start( _base, _offset ) \ - ( (void *) (_base) + (_offset) ) - -#define _CPU_Context_Initialize_fp( _destination ) \ - do { \ - *((Context_Control_fp *) *((void **) _destination)) = _CPU_Null_fp_context;\ - } while(0) - -#define _CPU_Context_save_fp( _fp_context ) \ - _CPU_Save_float_context( *(Context_Control_fp **)(_fp_context) ) - -#define _CPU_Context_restore_fp( _fp_context ) \ - _CPU_Restore_float_context( *(Context_Control_fp **)(_fp_context) ) - -/* end of Context handler macros */ - -/* - * Fatal Error manager macros - * - * These macros perform the following functions: - * + disable interrupts and halt the CPU - */ - -void hppa_cpu_halt(unsigned32 the_error); -#define _CPU_Fatal_halt( _error ) \ - hppa_cpu_halt(_error) - -/* end of Fatal Error manager macros */ - -/* - * Bitfield handler macros - * - * These macros perform the following functions: - * + scan for the highest numbered (MSB) set in a 16 bit bitfield - * - * NOTE: - * - * The HPPA does not have a scan instruction. This functionality - * is implemented in software. - */ - -#define CPU_USE_GENERIC_BITFIELD_CODE FALSE -#define CPU_USE_GENERIC_BITFIELD_DATA FALSE - -int hppa_rtems_ffs(unsigned int value); -#define _CPU_Bitfield_Find_first_bit( _value, _output ) \ - _output = hppa_rtems_ffs(_value) - -/* end of Bitfield handler macros */ - -/* - * Priority handler macros - * - * These macros perform the following functions: - * + return a mask with the bit for this major/minor portion of - * of thread priority set. - * + translate the bit number returned by "Bitfield_find_first_bit" - * into an index into the thread ready chain bit maps - * - * Note: 255 is the lowest priority - */ - -#define _CPU_Priority_Mask( _bit_number ) \ - ( 1 << (_bit_number) ) - -#define _CPU_Priority_bits_index( _priority ) \ - (_priority) - -/* end of Priority handler macros */ - -/* functions */ - -/* - * _CPU_Initialize - * - * This routine performs CPU dependent initialization. - */ - -void _CPU_Initialize( - rtems_cpu_table *cpu_table, - void (*thread_dispatch) -); - -/* - * _CPU_ISR_install_raw_handler - * - * This routine installs a "raw" interrupt handler directly into the - * processor's vector table. - */ - -void _CPU_ISR_install_raw_handler( - unsigned32 vector, - proc_ptr new_handler, - proc_ptr *old_handler -); - -/* - * _CPU_ISR_install_vector - * - * This routine installs an interrupt vector. - */ - -void _CPU_ISR_install_vector( - unsigned32 vector, - proc_ptr new_handler, - proc_ptr *old_handler -); - -/* - * _CPU_Context_switch - * - * This routine switches from the run context to the heir context. - */ - -void _CPU_Context_switch( - Context_Control *run, - Context_Control *heir -); - -/* - * _CPU_Context_restore - * - * This routine is generally used only to restart self in an - * efficient manner and avoid stack conflicts. - */ - -void _CPU_Context_restore( - Context_Control *new_context -); - -/* - * _CPU_Save_float_context - * - * This routine saves the floating point context passed to it. - * - * NOTE: _CPU_Context_save_fp is implemented as a macro on the HPPA - * which dereferences the pointer before calling this. - */ - -void _CPU_Save_float_context( - Context_Control_fp *fp_context -); - -/* - * _CPU_Restore_float_context - * - * This routine restores the floating point context passed to it. - * - * NOTE: _CPU_Context_save_fp is implemented as a macro on the HPPA - * which dereferences the pointer before calling this. - */ - -void _CPU_Restore_float_context( - Context_Control_fp *fp_context -); - - -/* - * The raw interrupt handler for external interrupts - */ - -extern void _Generic_ISR_Handler( - void -); - - -/* The following routine swaps the endian format of an unsigned int. - * It must be static so it can be referenced indirectly. - */ - -static inline unsigned int -CPU_swap_u32(unsigned32 value) -{ - unsigned32 swapped; - - HPPA_ASM_SWAPBYTES(value, swapped); - - return( swapped ); -} - -#endif /* ! ASM */ - -#ifdef __cplusplus -} -#endif - -#endif /* ! __CPU_h */ |