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Diffstat (limited to '')
| -rw-r--r-- | c/src/exec/score/cpu/m68k/cpu.c | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/c/src/exec/score/cpu/m68k/cpu.c b/c/src/exec/score/cpu/m68k/cpu.c deleted file mode 100644 index c7337c378e..0000000000 --- a/c/src/exec/score/cpu/m68k/cpu.c +++ /dev/null @@ -1,213 +0,0 @@ -/* - * Motorola MC68xxx Dependent Source - * - * 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. - * - * $Id$ - */ - -#include <rtems/system.h> -#include <rtems/score/isr.h> - -/* _CPU_Initialize - * - * This routine performs processor dependent initialization. - * - * INPUT PARAMETERS: - * cpu_table - CPU table to initialize - * thread_dispatch - entry pointer to thread dispatcher - * - * OUTPUT PARAMETERS: NONE - */ - -void _CPU_Initialize( - rtems_cpu_table *cpu_table, - void (*thread_dispatch) /* ignored on this CPU */ -) -{ -#if ( M68K_HAS_VBR == 0 ) - /* fill the isr redirect table with the code to place the format/id - onto the stack */ - - unsigned32 slot; - - for (slot = 0; slot < CPU_INTERRUPT_NUMBER_OF_VECTORS; slot++) - { - _CPU_ISR_jump_table[slot].move_a7 = M68K_MOVE_A7; - _CPU_ISR_jump_table[slot].format_id = slot << 2; - _CPU_ISR_jump_table[slot].jmp = M68K_JMP; - _CPU_ISR_jump_table[slot].isr_handler = (unsigned32) 0xDEADDEAD; - } -#endif /* M68K_HAS_VBR */ - - _CPU_Table = *cpu_table; -} - -/*PAGE - * - * _CPU_ISR_Get_level - */ - -unsigned32 _CPU_ISR_Get_level( void ) -{ - unsigned32 level; - - m68k_get_interrupt_level( level ); - - return level; -} - -/*PAGE - * - * _CPU_ISR_install_raw_handler - */ - -void _CPU_ISR_install_raw_handler( - unsigned32 vector, - proc_ptr new_handler, - proc_ptr *old_handler -) -{ - proc_ptr *interrupt_table = NULL; - -#if (M68K_HAS_FPSP_PACKAGE == 1) - /* - * If this vector being installed is one related to FP, then the - * FPSP will install the handler itself and handle it completely - * with no intervention from RTEMS. - */ - - if (*_FPSP_install_raw_handler && - (*_FPSP_install_raw_handler)(vector, new_handler, *old_handler)) - return; -#endif - - - /* - * On CPU models without a VBR, it is necessary for there to be some - * header code for each ISR which saves a register, loads the vector - * number, and jumps to _ISR_Handler. - */ - - m68k_get_vbr( interrupt_table ); -#if ( M68K_HAS_VBR == 1 ) - *old_handler = interrupt_table[ vector ]; - interrupt_table[ vector ] = new_handler; -#else - - /* - * Install handler into RTEMS jump table and if VBR table is in - * RAM, install the pointer to the appropriate jump table slot. - * If the VBR table is in ROM, it is the BSP's responsibility to - * load it appropriately to vector to the RTEMS jump table. - */ - - *old_handler = _CPU_ISR_jump_table[vector].isr_handler; - _CPU_ISR_jump_table[vector].isr_handler = (unsigned32) new_handler; - if ( (unsigned32) interrupt_table != 0xFFFFFFFF ) - interrupt_table[ vector ] = (proc_ptr) &_CPU_ISR_jump_table[vector]; -#endif /* M68K_HAS_VBR */ -} - -/*PAGE - * - * _CPU_ISR_install_vector - * - * This kernel routine installs the RTEMS handler for the - * specified vector. - * - * Input parameters: - * vector - interrupt vector number - * new_handler - replacement ISR for this vector number - * old_handler - former ISR for this vector number - * - * Output parameters: NONE - */ - -void _CPU_ISR_install_vector( - unsigned32 vector, - proc_ptr new_handler, - proc_ptr *old_handler -) -{ - proc_ptr ignored; - - *old_handler = _ISR_Vector_table[ vector ]; - - _CPU_ISR_install_raw_handler( vector, _ISR_Handler, &ignored ); - - _ISR_Vector_table[ vector ] = new_handler; -} - - -/*PAGE - * - * _CPU_Install_interrupt_stack - */ - -void _CPU_Install_interrupt_stack( void ) -{ -#if ( M68K_HAS_SEPARATE_STACKS == 1 ) - void *isp = _CPU_Interrupt_stack_high; - - asm volatile ( "movec %0,%%isp" : "=r" (isp) : "0" (isp) ); -#endif -} - -#if ( M68K_HAS_BFFFO != 1 ) -/* - * Returns table for duplication of the BFFFO instruction (16 bits only) - */ -const unsigned char __BFFFOtable[256] = { - 8, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, - 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 -}; -#endif - -/*PAGE - * - * The following code context switches the software FPU emulation - * code provided with GCC. - */ - -#if (CPU_SOFTWARE_FP == TRUE) -extern Context_Control_fp _fpCCR; - -void CPU_Context_save_fp (void **fp_context_ptr) -{ - Context_Control_fp *fp; - - fp = (Context_Control_fp *) *fp_context_ptr; - - *fp = _fpCCR; -} - -void CPU_Context_restore_fp (void **fp_context_ptr) -{ - Context_Control_fp *fp; - - fp = (Context_Control_fp *) *fp_context_ptr; - - _fpCCR = *fp; -} -#endif - |