diff options
Diffstat (limited to 'c/src/lib/libcpu/powerpc/new-exceptions/cpu.c')
| -rw-r--r-- | c/src/lib/libcpu/powerpc/new-exceptions/cpu.c | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/c/src/lib/libcpu/powerpc/new-exceptions/cpu.c b/c/src/lib/libcpu/powerpc/new-exceptions/cpu.c deleted file mode 100644 index 7c37f0e0d8..0000000000 --- a/c/src/lib/libcpu/powerpc/new-exceptions/cpu.c +++ /dev/null @@ -1,138 +0,0 @@ -/* - * PowerPC CPU Dependent Source - */ - -/* - * Author: Andrew Bray <andy@i-cubed.co.uk> - * - * COPYRIGHT (c) 1995 by i-cubed ltd. - * - * 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 i-cubed limited not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * i-cubed limited makes no representations about the suitability - * of this software for any purpose. - * - * Derived from c/src/exec/cpu/no_cpu/cpu.c: - * - * COPYRIGHT (c) 1989-1997. - * 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. - */ - -#include <string.h> - -#include <rtems/system.h> -#include <rtems/score/isr.h> -#include <rtems/score/context.h> -#include <rtems/score/thread.h> -#include <rtems/score/interr.h> -#include <rtems/score/cpu.h> -#include <rtems/score/tls.h> -#include <rtems/powerpc/powerpc.h> - -/* _CPU_Initialize - * - * This routine performs processor dependent initialization. - */ -void _CPU_Initialize(void) -{ -#if defined(__ALTIVEC__) && !defined(PPC_MULTILIB_ALTIVEC) - _CPU_Initialize_altivec(); -#endif -} - -/* - * _CPU_Context_Initialize - */ -void _CPU_Context_Initialize( - Context_Control *the_context, - void *stack_base, - size_t size, - uint32_t new_level, - void *entry_point, - bool is_fp, - void *tls_area -) -{ - ppc_context *the_ppc_context; - uint32_t msr_value = 0; - uintptr_t sp; - uintptr_t stack_alignment; - - sp = (uintptr_t) stack_base + size - PPC_MINIMUM_STACK_FRAME_SIZE; - - stack_alignment = CPU_STACK_ALIGNMENT; - sp &= ~(stack_alignment - 1); - - sp = (uintptr_t) memset((void *) sp, 0, PPC_MINIMUM_STACK_FRAME_SIZE); - - the_ppc_context = ppc_get_context( the_context ); - -#if !defined(PPC_DISABLE_MSR_ACCESS) - _CPU_MSR_GET( msr_value ); - - /* - * Setting the interrupt mask here is not strictly necessary - * since the IRQ level will be established from _Thread_Handler() - * again, as soon as the task starts execution. - * Because we have to establish a defined state anyways we - * can as well leave this code here. - * I.e., simply (and unconditionally) saying - * - * msr_value &= ~ppc_interrupt_get_disable_mask(); - * - * would be an alternative. - */ - - if (!(new_level & CPU_MODES_INTERRUPT_MASK)) { - msr_value |= ppc_interrupt_get_disable_mask(); - } - else { - msr_value &= ~ppc_interrupt_get_disable_mask(); - } - -#ifdef PPC_MULTILIB_FPU - /* - * The FP bit of the MSR should only be enabled if this is a floating - * point task. Unfortunately, the vfprintf_r routine in newlib - * ends up pushing a floating point register regardless of whether or - * not a floating point number is being printed. Serious restructuring - * of vfprintf.c will be required to avoid this behavior. At this - * time (7 July 1997), this restructuring is not being done. - */ - msr_value |= MSR_FP; -#endif - -#ifdef PPC_MULTILIB_ALTIVEC - msr_value |= MSR_VE; -#endif -#endif /* END PPC_DISABLE_MSR_ACCESS */ - -#ifdef PPC_MULTILIB_ALTIVEC - the_ppc_context->vrsave = 0; -#endif - - the_ppc_context->gpr1 = sp; - the_ppc_context->msr = msr_value; - the_ppc_context->lr = (uintptr_t) entry_point; - the_ppc_context->isr_dispatch_disable = 0; - -#if defined(__ALTIVEC__) && !defined(PPC_MULTILIB_ALTIVEC) - _CPU_Context_initialize_altivec( the_ppc_context ); -#endif - - if ( tls_area != NULL ) { - void *tls_block = _TLS_TCB_before_TLS_block_initialize( tls_area ); - - the_ppc_context->tp = (uintptr_t) tls_block + 0x7000; - } -} |