diff options
Diffstat (limited to 'nuttx/arch/rgmp/src/x86/arch_nuttx.c')
| -rw-r--r-- | nuttx/arch/rgmp/src/x86/arch_nuttx.c | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/nuttx/arch/rgmp/src/x86/arch_nuttx.c b/nuttx/arch/rgmp/src/x86/arch_nuttx.c new file mode 100644 index 000000000..c7b7577f3 --- /dev/null +++ b/nuttx/arch/rgmp/src/x86/arch_nuttx.c @@ -0,0 +1,106 @@ +/**************************************************************************** + * arch/rgmp/src/x86/arch_nuttx.c + * + * Copyright (C) 2011 Yu Qiang. All rights reserved. + * Author: Yu Qiang <yuq825@gmail.com> + * + * This file is a part of NuttX: + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +#include <rgmp/pmap.h> +#include <rgmp/string.h> +#include <rgmp/arch/fpu.h> + +#include <arch/arch.h> +#include <nuttx/sched.h> +#include <os_internal.h> + + +void nuttx_arch_init(void) +{ + extern void e1000_mod_init(void); + extern void up_serialinit(void); + + // setup COM device + up_serialinit(); + +#ifdef CONFIG_NET_E1000 + // setup e1000 + e1000_mod_init(); +#endif + +} + +void nuttx_arch_exit(void) +{ + extern void e1000_mod_exit(void); + +#ifdef CONFIG_NET_E1000 + e1000_mod_exit(); +#endif + +} + +void up_initial_state(_TCB *tcb) +{ + struct Trapframe *tf; + + if (tcb->pid != 0) { + tf = (struct Trapframe *)tcb->adj_stack_ptr-1; + memset(tf, 0, sizeof(struct Trapframe)); + tf->tf_fpu = rgmp_fpu_init_regs; + tf->tf_eflags = 0x00000202; + tf->tf_cs = GD_KT; + tf->tf_ds = GD_KD; + tf->tf_es = GD_KD; + tf->tf_eip = (uint32_t)tcb->start; + tcb->xcp.tf = tf; + } +} + +void push_xcptcontext(struct xcptcontext *xcp) +{ + xcp->save_eip = xcp->tf->tf_eip; + xcp->save_eflags = xcp->tf->tf_eflags; + + // set up signal entry with interrupts disabled + xcp->tf->tf_eip = (uint32_t)up_sigentry; + xcp->tf->tf_eflags = 0; +} + +void pop_xcptcontext(struct xcptcontext *xcp) +{ + xcp->tf->tf_eip = xcp->save_eip; + xcp->tf->tf_eflags = xcp->save_eflags; +} + |