diff options
Diffstat (limited to 'nuttx/arch/sh')
26 files changed, 2970 insertions, 10 deletions
diff --git a/nuttx/arch/sh/src/common/up_allocateheap.c b/nuttx/arch/sh/src/common/up_allocateheap.c new file mode 100644 index 000000000..676634ed6 --- /dev/null +++ b/nuttx/arch/sh/src/common/up_allocateheap.c @@ -0,0 +1,82 @@ +/**************************************************************************** + * arch/sh/src/common/up_allocateheap.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <sys/types.h> +#include <debug.h> + +#include <nuttx/arch.h> + +#include "up_arch.h" +#include "up_internal.h" + +/**************************************************************************** + * Private Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_allocate_heap + * + * Description: + * The heap may be statically allocated by + * defining CONFIG_HEAP_BASE and CONFIG_HEAP_SIZE. If these + * are not defined, then this function will be called to + * dynamically set aside the heap region. + * + ****************************************************************************/ + +void up_allocate_heap(FAR void **heap_start, size_t *heap_size) +{ + up_ledon(LED_HEAPALLOCATE); + *heap_start = (FAR void*)g_heapbase; + *heap_size = CONFIG_DRAM_END - g_heapbase; +} diff --git a/nuttx/arch/sh/src/common/up_assert.c b/nuttx/arch/sh/src/common/up_assert.c new file mode 100644 index 000000000..67db991b5 --- /dev/null +++ b/nuttx/arch/sh/src/common/up_assert.c @@ -0,0 +1,314 @@ +/**************************************************************************** + * arch/sh/src/common/up_assert.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <sys/types.h> +#include <stdlib.h> +#include <assert.h> +#include <debug.h> + +#include <nuttx/irq.h> +#include <nuttx/arch.h> + +#include "up_arch.h" +#include "os_internal.h" +#include "up_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/* Output debug info if stack dump is selected -- even if + * debug is not selected. + */ + +#ifdef CONFIG_ARCH_STACKDUMP +# undef lldbg +# define lldbg lib_lowprintf +#endif + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_getsp + ****************************************************************************/ + +/**************************************************************************** + * Name: getsp + ****************************************************************************/ + +static inline uint32 up_getsp(void) +{ + uint32 sp; + + __asm__ __volatile__ + ( + "mov r15, %0\n\t" + : "=&z" (sp) + : + : "memory" + ); + return sp; +} + +/**************************************************************************** + * Name: up_stackdump + ****************************************************************************/ + +#ifdef CONFIG_ARCH_STACKDUMP +static void up_stackdump(uint32 sp, uint32 stack_base) +{ + uint32 stack ; + + for (stack = sp & ~0x1f; stack < stack_base; stack += 32) + { + uint32 *ptr = (uint32*)stack; + lldbg("%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n", + stack, ptr[0], ptr[1], ptr[2], ptr[3], + ptr[4], ptr[5], ptr[6], ptr[7]); + } +} +#else +# define up_stackdump() +#endif + +/**************************************************************************** + * Name: up_registerdump + ****************************************************************************/ + +#ifdef CONFIG_ARCH_STACKDUMP +static inline void up_registerdump(void) +{ + /* Are user registers available from interrupt processing? */ + + if (current_regs) + { + int regs; + + /* Yes.. dump the interrupt registers */ + + for (regs = REG_R0; regs <= REG_R15; regs += 8) + { + uint32 *ptr = (uint32*)¤t_regs[regs]; + lldbg("R%d: %08x %08x %08x %08x %08x %08x %08x %08x\n", + regs, ptr[0], ptr[1], ptr[2], ptr[3], + ptr[4], ptr[5], ptr[6], ptr[7]); + } + lldbg("SR: %08x\n", current_regs[REG_SR]); + } +} +#else +# define up_registerdump() +#endif + +/**************************************************************************** + * Name: up_dumpstate + ****************************************************************************/ + +#ifdef CONFIG_ARCH_STACKDUMP +static void up_dumpstate(void) +{ + _TCB *rtcb = (_TCB*)g_readytorun.head; + uint32 sp = up_getsp(); + uint32 ustackbase; + uint32 ustacksize; +#if CONFIG_ARCH_INTERRUPTSTACK > 3 + uint32 istackbase; + uint32 istacksize; +#endif + + /* Get the limits on the user stack memory */ + + if (rtcb->pid == 0) + { + ustackbase = g_heapbase - 4; + ustacksize = CONFIG_PROC_STACK_SIZE; + } + else + { + ustackbase = (uint32)rtcb->adj_stack_ptr; + ustacksize = (uint32)rtcb->adj_stack_size; + } + + /* Get the limits on the interrupt stack memory */ + +#if CONFIG_ARCH_INTERRUPTSTACK > 3 + istackbase = (uint32)&g_userstack; + istacksize = (CONFIG_ARCH_INTERRUPTSTACK & ~3) - 4; + + /* Show interrupt stack info */ + + lldbg("sp: %08x\n", sp); + lldbg("IRQ stack:\n"); + lldbg(" base: %08x\n", istackbase); + lldbg(" size: %08x\n", istacksize); + + /* Does the current stack pointer lie within the interrupt + * stack? + */ + + if (sp <= istackbase && sp > istackbase - istacksize) + { + /* Yes.. dump the interrupt stack */ + + up_stackdump(sp, istackbase); + + /* Extract the user stack pointer which should lie + * at the base of the interrupt stack. + */ + + sp = g_userstack; + lldbg("sp: %08x\n", sp); + } + + /* Show user stack info */ + + lldbg("User stack:\n"); + lldbg(" base: %08x\n", ustackbase); + lldbg(" size: %08x\n", ustacksize); +#else + lldbg("sp: %08x\n", sp); + lldbg("stack base: %08x\n", ustackbase); + lldbg("stack size: %08x\n", ustacksize); +#endif + + /* Dump the user stack if the stack pointer lies within the allocated user + * stack memory. + */ + + if (sp > ustackbase || sp <= ustackbase - ustacksize) + { +#if !defined(CONFIG_ARCH_INTERRUPTSTACK) || CONFIG_ARCH_INTERRUPTSTACK < 4 + lldbg("ERROR: Stack pointer is not within allocated stack\n"); +#endif + } + else + { + up_stackdump(sp, ustackbase); + } + + /* Then dump the registers (if available) */ + + up_registerdump(); +} +#else +# define up_dumpstate() +#endif + +/**************************************************************************** + * Name: _up_assert + ****************************************************************************/ + +static void _up_assert(int errorcode) /* __attribute__ ((noreturn)) */ +{ + /* Are we in an interrupt handler or the idle task? */ + + if (current_regs || ((_TCB*)g_readytorun.head)->pid == 0) + { + (void)irqsave(); + for(;;) + { +#ifdef CONFIG_ARCH_LEDS + up_ledon(LED_PANIC); + up_mdelay(250); + up_ledoff(LED_PANIC); + up_mdelay(250); +#endif + } + } + else + { + exit(errorcode); + } +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_assert + ****************************************************************************/ + +void up_assert(const ubyte *filename, int lineno) +{ +#if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_DEBUG) + _TCB *rtcb = (_TCB*)g_readytorun.head; +#endif + + up_ledon(LED_ASSERTION); +#if CONFIG_TASK_NAME_SIZE > 0 + lldbg("Assertion failed at file:%s line: %d task: %s\n", + filename, lineno, rtcb->name); +#else + lldbg("Assertion failed at file:%s line: %d\n", + filename, lineno); +#endif + up_dumpstate(); + _up_assert(EXIT_FAILURE); +} + +/**************************************************************************** + * Name: up_assert_code + ****************************************************************************/ + +void up_assert_code(const ubyte *filename, int lineno, int errorcode) +{ +#if CONFIG_TASK_NAME_SIZE > 0 && defined(CONFIG_DEBUG) + _TCB *rtcb = (_TCB*)g_readytorun.head; +#endif + + up_ledon(LED_ASSERTION); +#if CONFIG_TASK_NAME_SIZE > 0 + lldbg("Assertion failed at file:%s line: %d task: %s error code: %d\n", + filename, lineno, rtcb->name, errorcode); +#else + lldbg("Assertion failed at file:%s line: %d error code: %d\n", + filename, lineno, errorcode); +#endif + up_dumpstate(); + _up_assert(errorcode); +} diff --git a/nuttx/arch/sh/src/common/up_blocktask.c b/nuttx/arch/sh/src/common/up_blocktask.c new file mode 100644 index 000000000..3a9e8b5fa --- /dev/null +++ b/nuttx/arch/sh/src/common/up_blocktask.c @@ -0,0 +1,164 @@ +/**************************************************************************** + * arch/sh/src/common/up_blocktask.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> +#include <sched.h> +#include <debug.h> +#include <nuttx/arch.h> +#include "os_internal.h" +#include "up_internal.h" + +/**************************************************************************** + * Private Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_block_task + * + * Description: + * The currently executing task at the head of + * the ready to run list must be stopped. Save its context + * and move it to the inactive list specified by task_state. + * + * Inputs: + * tcb: Refers to a task in the ready-to-run list (normally + * the task at the the head of the list). It most be + * stopped, its context saved and moved into one of the + * waiting task lists. It it was the task at the head + * of the ready-to-run list, then a context to the new + * ready to run task must be performed. + * task_state: Specifies which waiting task list should be + * hold the blocked task TCB. + * + ****************************************************************************/ + +void up_block_task(_TCB *tcb, tstate_t task_state) +{ + /* Verify that the context switch can be performed */ + + if ((tcb->task_state < FIRST_READY_TO_RUN_STATE) || + (tcb->task_state > LAST_READY_TO_RUN_STATE)) + { + PANIC(OSERR_BADBLOCKSTATE); + } + else + { + _TCB *rtcb = (_TCB*)g_readytorun.head; + boolean switch_needed; + + /* Remove the tcb task from the ready-to-run list. If we + * are blocking the task at the head of the task list (the + * most likely case), then a context switch to the next + * ready-to-run task is needed. In this case, it should + * also be true that rtcb == tcb. + */ + + switch_needed = sched_removereadytorun(tcb); + + /* Add the task to the specified blocked task list */ + + sched_addblocked(tcb, (tstate_t)task_state); + + /* If there are any pending tasks, then add them to the g_readytorun + * task list now + */ + + if (g_pendingtasks.head) + { + switch_needed |= sched_mergepending(); + } + + /* Now, perform the context switch if one is needed */ + + if (switch_needed) + { + /* Are we in an interrupt handler? */ + + if (current_regs) + { + /* Yes, then we have to do things differently. + * Just copy the current_regs into the OLD rtcb. + */ + + up_copystate(rtcb->xcp.regs, current_regs); + + /* Restore the exception context of the rtcb at the (new) head + * of the g_readytorun task list. + */ + + rtcb = (_TCB*)g_readytorun.head; + + /* Then switch contexts */ + + up_copystate(current_regs, rtcb->xcp.regs); + } + + /* Copy the user C context into the TCB at the (old) head of the + * g_readytorun Task list. if up_saveusercontext returns a non-zero + * value, then this is really the previously running task restarting! + */ + + else if (!up_saveusercontext(rtcb->xcp.regs)) + { + /* Restore the exception context of the rtcb at the (new) head + * of the g_readytorun task list. + */ + + rtcb = (_TCB*)g_readytorun.head; + + /* Then switch contexts */ + + up_fullcontextrestore(rtcb->xcp.regs); + } + } + } +} diff --git a/nuttx/arch/sh/src/common/up_copystate.c b/nuttx/arch/sh/src/common/up_copystate.c new file mode 100644 index 000000000..c74812438 --- /dev/null +++ b/nuttx/arch/sh/src/common/up_copystate.c @@ -0,0 +1,77 @@ +/**************************************************************************** + * arch/sh/src/common/up_copystate.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <sys/types.h> + +#include "os_internal.h" +#include "up_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_undefinedinsn + ****************************************************************************/ + +/* A little faster than most memcpy's */ + +void up_copystate(uint32 *dest, uint32 *src) +{ + int i; + for (i = 0; i < XCPTCONTEXT_REGS; i++) + { + *dest++ = *src++; + } +} + diff --git a/nuttx/arch/sh/src/common/up_createstack.c b/nuttx/arch/sh/src/common/up_createstack.c new file mode 100644 index 000000000..1a1ecb8d8 --- /dev/null +++ b/nuttx/arch/sh/src/common/up_createstack.c @@ -0,0 +1,131 @@ +/**************************************************************************** + * arch/sh/src/common/up_createstack.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <sys/types.h> +#include <sched.h> +#include <debug.h> + +#include <nuttx/kmalloc.h> +#include <nuttx/arch.h> + +#include "up_arch.h" +#include "up_internal.h" + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Global Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_create_stack + * + * Description: + * Allocate a stack for a new thread and setup + * up stack-related information in the TCB. + * + * The following TCB fields must be initialized: + * adj_stack_size: Stack size after adjustment for hardware, + * processor, etc. This value is retained only for debug + * purposes. + * stack_alloc_ptr: Pointer to allocated stack + * adj_stack_ptr: Adjusted stack_alloc_ptr for HW. The + * initial value of the stack pointer. + * + * Inputs: + * tcb: The TCB of new task + * stack_size: The requested stack size. At least this much + * must be allocated. + ****************************************************************************/ + +STATUS up_create_stack(_TCB *tcb, size_t stack_size) +{ + if (tcb->stack_alloc_ptr && + tcb->adj_stack_size != stack_size) + { + sched_free(tcb->stack_alloc_ptr); + tcb->stack_alloc_ptr = NULL; + } + + if (!tcb->stack_alloc_ptr) + { + tcb->stack_alloc_ptr = (uint32 *)kzmalloc(stack_size); + } + + if (tcb->stack_alloc_ptr) + { + size_t top_of_stack; + size_t size_of_stack; + + /* The Arm7Tdmi uses a push-down stack: the stack grows + * toward loweraddresses in memory. The stack pointer + * register, points to the lowest, valid work address + * (the "top" of the stack). Items on the stack are + * referenced as positive word offsets from sp. + */ + + top_of_stack = (uint32)tcb->stack_alloc_ptr + stack_size - 4; + + /* The Arm7Tdmi stack must be aligned at word (4 byte) + * boundaries. If necessary top_of_stack must be rounded + * down to the next boundary + */ + + top_of_stack &= ~3; + size_of_stack = top_of_stack - (uint32)tcb->stack_alloc_ptr + 4; + + /* Save the adjusted stack values in the _TCB */ + + tcb->adj_stack_ptr = (uint32*)top_of_stack; + tcb->adj_stack_size = size_of_stack; + + up_ledon(LED_STACKCREATED); + return OK; + } + + return ERROR; +} diff --git a/nuttx/arch/sh/src/common/up_doirq.c b/nuttx/arch/sh/src/common/up_doirq.c new file mode 100644 index 000000000..6b0d2c0fc --- /dev/null +++ b/nuttx/arch/sh/src/common/up_doirq.c @@ -0,0 +1,104 @@ +/**************************************************************************** + * arch/sh/src/common/up_doirq.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> +#include <nuttx/irq.h> +#include <nuttx/arch.h> +#include <assert.h> +#include "up_arch.h" +#include "os_internal.h" +#include "up_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +void up_doirq(int irq, uint32* regs) +{ + up_ledon(LED_INIRQ); +#ifdef CONFIG_SUPPRESS_INTERRUPTS + PANIC(OSERR_ERREXCEPTION); +#else + if ((unsigned)irq < NR_IRQS) + { + /* Current regs non-zero indicates that we are processing + * an interrupt; current_regs is also used to manage + * interrupt level context switches. + */ + + current_regs = regs; + + /* Mask and acknowledge the interrupt */ + + up_maskack_irq(irq); + + /* Deliver the IRQ */ + + irq_dispatch(irq, regs); + + /* Indicate that we are no long in an interrupt handler */ + + current_regs = NULL; + + /* Unmask the last interrupt (global interrupts are still + * disabled. + */ + + up_enable_irq(irq); + } + up_ledoff(LED_INIRQ); +#endif +} diff --git a/nuttx/arch/sh/src/common/up_exit.c b/nuttx/arch/sh/src/common/up_exit.c new file mode 100644 index 000000000..30506c3e5 --- /dev/null +++ b/nuttx/arch/sh/src/common/up_exit.c @@ -0,0 +1,173 @@ +/**************************************************************************** + * common/up_exit.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> +#include <sched.h> +#include <debug.h> +#include <nuttx/arch.h> +#include "os_internal.h" +#include "up_internal.h" + +#ifdef CONFIG_DUMP_ON_EXIT +#include <nuttx/fs.h> +#endif + +/**************************************************************************** + * Private Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: _up_dumponexit + * + * Description: + * Dump the state of all tasks whenever on task exits. This is debug + * instrumentation that was added to check file-related reference counting + * but could be useful again sometime in the future. + * + ****************************************************************************/ + +#if defined(CONFIG_DUMP_ON_EXIT) && defined(CONFIG_DEBUG) +static void _up_dumponexit(FAR _TCB *tcb, FAR void *arg) +{ +#if CONFIG_NFILE_DESCRIPTORS > 0 || CONFIG_NFILE_STREAMS > 0 + int i; +#endif + + sdbg(" TCB=%p name=%s\n", tcb, tcb->argv[0]); + +#if CONFIG_NFILE_DESCRIPTORS > 0 + if (tcb->filelist) + { + sdbg(" filelist refcount=%d\n", + tcb->filelist->fl_crefs); + + for (i = 0; i < CONFIG_NFILE_DESCRIPTORS; i++) + { + struct inode *inode = tcb->filelist->fl_files[i].f_inode; + if (inode) + { + sdbg(" fd=%d refcount=%d\n", + i, inode->i_crefs); + } + } + } +#endif + +#if CONFIG_NFILE_STREAMS > 0 + if (tcb->streams) + { + sdbg(" streamlist refcount=%d\n", + tcb->streams->sl_crefs); + + for (i = 0; i < CONFIG_NFILE_STREAMS; i++) + { + struct file_struct *filep = &tcb->streams->sl_streams[i]; + if (filep->fs_filedes >= 0) + { +#if CONFIG_STDIO_BUFFER_SIZE > 0 + sdbg(" fd=%d nbytes=%d\n", + filep->fs_filedes, + filep->fs_bufpos - filep->fs_bufstart); +#else + sdbg(" fd=%d\n", filep->fs_filedes); +#endif + } + } + } +#endif +} +#endif + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: _exit + * + * Description: + * This function causes the currently executing task to cease + * to exist. This is a special case of task_delete() where the task to + * be deleted is the currently executing task. It is more complex because + * a context switch must be perform to the the next ready to run task. + * + ****************************************************************************/ + +void _exit(int status) +{ + _TCB* tcb; + + /* Disable interrupts. They will be restored when the next + * task is started. + */ + + (void)irqsave(); + + slldbg("TCB=%p exitting\n", tcb); + +#if defined(CONFIG_DUMP_ON_EXIT) && defined(CONFIG_DEBUG) + slldbg("Other tasks:\n"); + sched_foreach(_up_dumponexit, NULL); +#endif + + /* Destroy the task at the head of the ready to run list. */ + + (void)task_deletecurrent(); + + /* Now, perform the context switch to the new ready-to-run task at the + * head of the list. + */ + + tcb = (_TCB*)g_readytorun.head; + slldbg("New Active Task TCB=%p\n", tcb); + + /* Then switch contexts */ + + up_fullcontextrestore(tcb->xcp.regs); +} + diff --git a/nuttx/arch/sh/src/common/up_idle.c b/nuttx/arch/sh/src/common/up_idle.c new file mode 100644 index 000000000..a1a63dd43 --- /dev/null +++ b/nuttx/arch/sh/src/common/up_idle.c @@ -0,0 +1,87 @@ +/**************************************************************************** + * arch/sh/src/common/up_idle.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> +#include <nuttx/arch.h> +#include "up_internal.h" + +/**************************************************************************** + * Private Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_idle + * + * Description: + * up_idle() is the logic that will be executed when their + * is no other ready-to-run task. This is processor idle + * time and will continue until some interrupt occurs to + * cause a context switch from the idle task. + * + * Processing in this state may be processor-specific. e.g., + * this is where power management operations might be + * performed. + * + ****************************************************************************/ + +void up_idle(void) +{ +#if defined(CONFIG_SUPPRESS_INTERRUPTS) || defined(CONFIG_SUPPRESS_TIMER_INTS) + /* If the system is idle and there are no timer interrupts, + * then process "fake" timer interrupts. Hopefully, something + * will wake up. + */ + + sched_process_timer(); +#endif +} + diff --git a/nuttx/arch/sh/src/common/up_initialize.c b/nuttx/arch/sh/src/common/up_initialize.c new file mode 100644 index 000000000..adab1d00e --- /dev/null +++ b/nuttx/arch/sh/src/common/up_initialize.c @@ -0,0 +1,156 @@ +/**************************************************************************** + * arch/sh/src/common/up_initialize.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <sys/types.h> +#include <debug.h> + +#include <nuttx/arch.h> +#include <nuttx/fs.h> + +#include "up_arch.h" +#include "up_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/* Define to enable timing loop calibration */ + +#undef CONFIG_ARCH_CALIBRATION + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_calibratedelay + * + * Description: + * Delay loops are provided for short timing loops. This function, if + * enabled, will just wait for 100 seconds. Using a stopwatch, you can + * can then determine if the timing loops are properly calibrated. + * + ****************************************************************************/ + +#if defined(CONFIG_ARCH_CALIBRATION) & defined(CONFIG_DEBUG) +static void up_calibratedelay(void) +{ + int i; + slldbg("Beginning 100s delay\n"); + for (i = 0; i < 100; i++) + { + up_mdelay(1000); + } + slldbg("End 100s delay\n"); +} +#else +# define up_calibratedelay() +#endif + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_initialize + * + * Description: + * up_initialize will be called once during OS initialization after the + * basic OS services have been initialized. The architecture specific + * details of initializing the OS will be handled here. Such things as + * setting up interrupt service routines, starting the clock, and + * registering device drivers are some of the things that are different + * for each processor and hardware platform. + * + * up_initialize is called after the OS initialized but before the user + * initialization logic has been started and before the libraries have + * been initialized. OS services and driver services are available. + * + ****************************************************************************/ + +void up_initialize(void) +{ + /* Initialize global variables */ + + current_regs = NULL; + + /* Calibrate the timing loop */ + + up_calibratedelay(); + + /* Initialize the interrupt subsystem */ + + up_irqinitialize(); + + /* Initialize the system timer interrupt */ + +#if !defined(CONFIG_SUPPRESS_INTERRUPTS) && !defined(CONFIG_SUPPRESS_TIMER_INTS) + up_timerinit(); +#endif + + /* Register devices */ + +#if CONFIG_NFILE_DESCRIPTORS > 0 + devnull_register(); /* Standard /dev/null */ +#endif + + /* Initialize the serial device driver */ + +#ifdef CONFIG_USE_SERIALDRIVER + up_serialinit(); +#elif defined(CONFIG_DEV_LOWCONSOLE) + lowconsole_init(); +#endif + + /* Initialize the netwok */ + + up_netinitialize(); + + /* Initializ USB */ + + up_usbinitialize(); + + up_ledon(LED_IRQSENABLED); +} diff --git a/nuttx/arch/sh/src/common/up_initialstate.c b/nuttx/arch/sh/src/common/up_initialstate.c new file mode 100644 index 000000000..d9de84a15 --- /dev/null +++ b/nuttx/arch/sh/src/common/up_initialstate.c @@ -0,0 +1,109 @@ +/**************************************************************************** + * arch/sh/src/common/up_initialstate.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> +#include <string.h> +#include <nuttx/arch.h> +#include "up_internal.h" +#include "up_arch.h" + +/**************************************************************************** + * Private Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_getsr + ****************************************************************************/ + +static inline irqstate_t up_getsr(void) +{ + irqstate_t flags; + + __asm__ __volatile__ + ( + "stc sr, %0\n\t" + : "=&z" (flags) + : + : "memory" + ); + return flags; +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_initial_state + * + * Description: + * A new thread is being started and a new TCB + * has been created. This function is called to initialize + * the processor specific portions of the new TCB. + * + * This function must setup the intial architecture registers + * and/or stack so that execution will begin at tcb->start + * on the next context switch. + * + ****************************************************************************/ + +void up_initial_state(_TCB *tcb) +{ + struct xcptcontext *xcp = &tcb->xcp; + + /* Initialize the initial exception register context structure */ + + memset(xcp, 0, sizeof(struct xcptcontext)); + xcp->regs[REG_SP] = (uint32)tcb->adj_stack_ptr; + xcp->regs[REG_PC] = (uint32)tcb->start; +#ifdef CONFIG_SUPPRESS_INTERRUPTS + xcp->regs[REG_SR] = up_getsr() | 0x000000f0; +#else + xcp->regs[REG_SR] = up_getsr() & ~0x000000f0; +#endif +} diff --git a/nuttx/arch/sh/src/common/up_interruptcontext.c b/nuttx/arch/sh/src/common/up_interruptcontext.c new file mode 100644 index 000000000..aa2720aa8 --- /dev/null +++ b/nuttx/arch/sh/src/common/up_interruptcontext.c @@ -0,0 +1,68 @@ +/**************************************************************************** + * arch/sh/src/common/up_interruptcontext.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> +#include <nuttx/arch.h> +#include <nuttx/irq.h> +#include "up_internal.h" + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Global Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_interrupt_context + * + * Description: Return TRUE is we are currently executing in + * the interrupt handler context. + ****************************************************************************/ + +boolean up_interrupt_context(void) +{ + return current_regs != NULL; +} diff --git a/nuttx/arch/sh/src/common/up_lowputs.c b/nuttx/arch/sh/src/common/up_lowputs.c new file mode 100644 index 000000000..78ed1fef6 --- /dev/null +++ b/nuttx/arch/sh/src/common/up_lowputs.c @@ -0,0 +1,75 @@ +/**************************************************************************** + * arch/sh/src/common/up_lowputs.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> + +#include "up_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_lowputs + * + * Description: + * This is a low-level helper function used to support debug. + * + ****************************************************************************/ + +void up_lowputs(const char *str) +{ + while(*str) + { + up_lowputc(*str++); + } +} diff --git a/nuttx/arch/sh/src/common/up_mdelay.c b/nuttx/arch/sh/src/common/up_mdelay.c new file mode 100644 index 000000000..5d3958700 --- /dev/null +++ b/nuttx/arch/sh/src/common/up_mdelay.c @@ -0,0 +1,90 @@ +/**************************************************************************** + * arch/sh/src/common/up_mdelay.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/arch.h> + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Private Variables + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_mdelay + * + * Description: + * Delay inline for the requested number of milliseconds. + * *** NOT multi-tasking friendly *** + * + * ASSUMPTIONS: + * The setting CONFIG_BOARD_LOOPSPERMSEC has been calibrated + * + ****************************************************************************/ + +void up_mdelay(unsigned int milliseconds) +{ + volatile int i; + volatile int j; + + for (i = 0; i < milliseconds; i++) + { + for (j = 0; j < CONFIG_BOARD_LOOPSPERMSEC; j++) + { + } + } +} diff --git a/nuttx/arch/sh/src/common/up_puts.c b/nuttx/arch/sh/src/common/up_puts.c new file mode 100644 index 000000000..2e6e22e48 --- /dev/null +++ b/nuttx/arch/sh/src/common/up_puts.c @@ -0,0 +1,76 @@ +/**************************************************************************** + * arch/sh/src/common/up_puts.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> +#include <nuttx/arch.h> + +#include "up_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_puts + * + * Description: + * This is a low-level helper function used to support debug. + * + ****************************************************************************/ + +void up_puts(const char *str) +{ + while(*str) + { + up_putc(*str++); + } +} diff --git a/nuttx/arch/sh/src/common/up_releasepending.c b/nuttx/arch/sh/src/common/up_releasepending.c new file mode 100644 index 000000000..709ce3fb4 --- /dev/null +++ b/nuttx/arch/sh/src/common/up_releasepending.c @@ -0,0 +1,131 @@ +/**************************************************************************** + * arch/sh/src/common/up_releasepending.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> +#include <sched.h> +#include <debug.h> +#include <nuttx/arch.h> +#include "os_internal.h" +#include "up_internal.h" + +/**************************************************************************** + * Private Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_release_pending + * + * Description: + * Release and ready-to-run tasks that have + * collected in the pending task list. This can call a + * context switch if a new task is placed at the head of + * the ready to run list. + * + ****************************************************************************/ + +void up_release_pending(void) +{ + _TCB *rtcb = (_TCB*)g_readytorun.head; + + slldbg("From TCB=%p\n", rtcb); + + /* Merge the g_pendingtasks list into the g_readytorun task list */ + + /* sched_lock(); */ + if (sched_mergepending()) + { + /* The currently active task has changed! We will need to + * switch contexts. First check if we are operating in + * interrupt context: + */ + + if (current_regs) + { + /* Yes, then we have to do things differently. + * Just copy the current_regs into the OLD rtcb. + */ + + up_copystate(rtcb->xcp.regs, current_regs); + + /* Restore the exception context of the rtcb at the (new) head + * of the g_readytorun task list. + */ + + rtcb = (_TCB*)g_readytorun.head; + slldbg("New Active Task TCB=%p\n", rtcb); + + /* Then switch contexts */ + + up_copystate(current_regs, rtcb->xcp.regs); + } + + /* Copy the exception context into the TCB of the task that + * was currently active. if up_saveusercontext returns a non-zero + * value, then this is really the previously running task + * restarting! + */ + + else if (!up_saveusercontext(rtcb->xcp.regs)) + { + /* Restore the exception context of the rtcb at the (new) head + * of the g_readytorun task list. + */ + + rtcb = (_TCB*)g_readytorun.head; + slldbg("New Active Task TCB=%p\n", rtcb); + + /* Then switch contexts */ + + up_fullcontextrestore(rtcb->xcp.regs); + } + } +} diff --git a/nuttx/arch/sh/src/common/up_releasestack.c b/nuttx/arch/sh/src/common/up_releasestack.c new file mode 100644 index 000000000..729d7791a --- /dev/null +++ b/nuttx/arch/sh/src/common/up_releasestack.c @@ -0,0 +1,78 @@ +/**************************************************************************** + * arch/sh/src/common/up_releasestack.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> +#include <sched.h> +#include <debug.h> +#include <nuttx/arch.h> +#include "os_internal.h" +#include "up_internal.h" + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Global Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_release_stack + * + * Description: + * A task has been stopped. Free all stack + * related resources retained int the defunct TCB. + * + ****************************************************************************/ + +void up_release_stack(_TCB *dtcb) +{ + if (dtcb->stack_alloc_ptr) + { + sched_free(dtcb->stack_alloc_ptr); + dtcb->stack_alloc_ptr = NULL; + } + + dtcb->adj_stack_size = 0; +} diff --git a/nuttx/arch/sh/src/common/up_reprioritizertr.c b/nuttx/arch/sh/src/common/up_reprioritizertr.c new file mode 100644 index 000000000..437651d0f --- /dev/null +++ b/nuttx/arch/sh/src/common/up_reprioritizertr.c @@ -0,0 +1,179 @@ +/**************************************************************************** + * arch/sh/src/common/up_reprioritizertr.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> +#include <sched.h> +#include <debug.h> +#include <nuttx/arch.h> +#include "os_internal.h" +#include "up_internal.h" + +/**************************************************************************** + * Private Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_reprioritize_rtr + * + * Description: + * Called when the priority of a running or + * ready-to-run task changes and the reprioritization will + * cause a context switch. Two cases: + * + * 1) The priority of the currently running task drops and the next + * task in the ready to run list has priority. + * 2) An idle, ready to run task's priority has been raised above the + * the priority of the current, running task and it now has the + * priority. + * + * Inputs: + * tcb: The TCB of the task that has been reprioritized + * priority: The new task priority + * + ****************************************************************************/ + +void up_reprioritize_rtr(_TCB *tcb, ubyte priority) +{ + /* Verify that the caller is sane */ + + if (tcb->task_state < FIRST_READY_TO_RUN_STATE || + tcb->task_state > LAST_READY_TO_RUN_STATE || + priority < SCHED_PRIORITY_MIN || + priority > SCHED_PRIORITY_MAX) + { + PANIC(OSERR_BADREPRIORITIZESTATE); + } + else + { + _TCB *rtcb = (_TCB*)g_readytorun.head; + boolean switch_needed; + + slldbg("TCB=%p PRI=%d\n", tcb, priority); + + /* Remove the tcb task from the ready-to-run list. + * sched_removereadytorun will return TRUE if we just + * remove the head of the ready to run list. + */ + + switch_needed = sched_removereadytorun(tcb); + + /* Setup up the new task priority */ + + tcb->sched_priority = (ubyte)priority; + + /* Return the task to the specified blocked task list. + * sched_addreadytorun will return TRUE if the task was + * added to the new list. We will need to perform a context + * switch only if the EXCLUSIVE or of the two calls is non-zero + * (i.e., one and only one the calls changes the head of the + * ready-to-run list). + */ + + switch_needed ^= sched_addreadytorun(tcb); + + /* Now, perform the context switch if one is needed */ + + if (switch_needed) + { + /* If we are going to do a context switch, then now is the right + * time to add any pending tasks back into the ready-to-run list. + * task list now + */ + + if (g_pendingtasks.head) + { + sched_mergepending(); + } + + /* Are we in an interrupt handler? */ + + if (current_regs) + { + /* Yes, then we have to do things differently. + * Just copy the current_regs into the OLD rtcb. + */ + + up_copystate(rtcb->xcp.regs, current_regs); + + /* Restore the exception context of the rtcb at the (new) head + * of the g_readytorun task list. + */ + + rtcb = (_TCB*)g_readytorun.head; + slldbg("New Active Task TCB=%p\n", rtcb); + + /* Then switch contexts */ + + up_copystate(current_regs, rtcb->xcp.regs); + } + + /* Copy the exception context into the TCB at the (old) head of the + * g_readytorun Task list. if up_saveusercontext returns a non-zero + * value, then this is really the previously running task restarting! + */ + + else if (!up_saveusercontext(rtcb->xcp.regs)) + { + /* Restore the exception context of the rtcb at the (new) head + * of the g_readytorun task list. + */ + + rtcb = (_TCB*)g_readytorun.head; + slldbg("New Active Task TCB=%p\n", rtcb); + + /* Then switch contexts */ + + up_fullcontextrestore(rtcb->xcp.regs); + } + } + } +} diff --git a/nuttx/arch/sh/src/common/up_schedulesigaction.c b/nuttx/arch/sh/src/common/up_schedulesigaction.c new file mode 100644 index 000000000..740f67cc7 --- /dev/null +++ b/nuttx/arch/sh/src/common/up_schedulesigaction.c @@ -0,0 +1,197 @@ +/**************************************************************************** + * common/up_schedulesigaction.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <sys/types.h> +#include <sched.h> +#include <debug.h> + +#include <nuttx/arch.h> + +#include "os_internal.h" +#include "up_internal.h" +#include "up_arch.h" + +#ifndef CONFIG_DISABLE_SIGNALS + +/**************************************************************************** + * Private Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Funictions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_schedule_sigaction + * + * Description: + * This function is called by the OS when one or more + * signal handling actions have been queued for execution. + * The architecture specific code must configure things so + * that the 'igdeliver' callback is executed on the thread + * specified by 'tcb' as soon as possible. + * + * This function may be called from interrupt handling logic. + * + * This operation should not cause the task to be unblocked + * nor should it cause any immediate execution of sigdeliver. + * Typically, a few cases need to be considered: + * + * (1) This function may be called from an interrupt handler + * During interrupt processing, all xcptcontext structures + * should be valid for all tasks. That structure should + * be modified to invoke sigdeliver() either on return + * from (this) interrupt or on some subsequent context + * switch to the recipient task. + * (2) If not in an interrupt handler and the tcb is NOT + * the currently executing task, then again just modify + * the saved xcptcontext structure for the recipient + * task so it will invoke sigdeliver when that task is + * later resumed. + * (3) If not in an interrupt handler and the tcb IS the + * currently executing task -- just call the signal + * handler now. + * + ****************************************************************************/ + +void up_schedule_sigaction(_TCB *tcb, sig_deliver_t sigdeliver) +{ + /* Refuse to handle nested signal actions */ + + sdbg("tcb=0x%p sigdeliver=0x%p\n", tcb, sigdeliver); + + if (!tcb->xcp.sigdeliver) + { + irqstate_t flags; + + /* Make sure that interrupts are disabled */ + + flags = irqsave(); + + /* First, handle some special cases when the signal is + * being delivered to the currently executing task. + */ + + sdbg("rtcb=0x%p current_regs=0x%p\n", g_readytorun.head, current_regs); + + if (tcb == (_TCB*)g_readytorun.head) + { + /* CASE 1: We are not in an interrupt handler and + * a task is signalling itself for some reason. + */ + + if (!current_regs) + { + /* In this case just deliver the signal now. */ + + sigdeliver(tcb); + } + + /* CASE 2: We are in an interrupt handler AND the + * interrupted task is the same as the one that + * must receive the signal, then we will have to modify + * the return state as well as the state in the TCB. + */ + + else + { + /* Save the return PC and SR and one scratch register + * These will be restored by the signal trampoline after + * the signals have been delivered. + */ + + tcb->xcp.sigdeliver = sigdeliver; + tcb->xcp.saved_pc = current_regs[REG_PC]; + tcb->xcp.saved_sr = current_regs[REG_SR]; + + /* Then set up to vector to the trampoline with interrupts + * disabled + */ + + current_regs[REG_PC] = (uint32)up_sigdeliver; + current_regs[REG_SR] |= 0x000000f0; + + /* And make sure that the saved context in the TCB + * is the same as the interrupt return context. + */ + + up_copystate(tcb->xcp.regs, current_regs); + } + } + + /* Otherwise, we are (1) signaling a task is not running + * from an interrupt handler or (2) we are not in an + * interrupt handler and the running task is signalling + * some non-running task. + */ + + else + { + /* Save the return PC and SR and one scratch register + * These will be restored by the signal trampoline after + * the signals have been delivered. + */ + + tcb->xcp.sigdeliver = sigdeliver; + tcb->xcp.saved_pc = tcb->xcp.regs[REG_PC]; + tcb->xcp.saved_sr = tcb->xcp.regs[REG_SR]; + + /* Then set up to vector to the trampoline with interrupts + * disabled + */ + + tcb->xcp.regs[REG_PC] = (uint32)up_sigdeliver; + tcb->xcp.regs[REG_SR] |= 0x000000f0 ; + } + + irqrestore(flags); + } +} + +#endif /* !CONFIG_DISABLE_SIGNALS */ diff --git a/nuttx/arch/sh/src/common/up_sigdeliver.c b/nuttx/arch/sh/src/common/up_sigdeliver.c new file mode 100644 index 000000000..2b5442812 --- /dev/null +++ b/nuttx/arch/sh/src/common/up_sigdeliver.c @@ -0,0 +1,145 @@ +/**************************************************************************** + * common/up_sigdeliver.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <sys/types.h> +#include <sched.h> +#include <debug.h> + +#include <nuttx/irq.h> +#include <nuttx/arch.h> + +#include "os_internal.h" +#include "up_internal.h" +#include "up_arch.h" + +#ifndef CONFIG_DISABLE_SIGNALS + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_sigdeliver + * + * Description: + * This is the a signal handling trampoline. When a + * signal action was posted. The task context was mucked + * with and forced to branch to this location with interrupts + * disabled. + * + ****************************************************************************/ + +void up_sigdeliver(void) +{ +#ifndef CONFIG_DISABLE_SIGNALS + _TCB *rtcb = (_TCB*)g_readytorun.head; + uint32 regs[XCPTCONTEXT_REGS]; + sig_deliver_t sigdeliver; + + /* Save the errno. This must be preserved throughout the + * signal handling so that the the user code final gets + * the correct errno value (probably EINTR). + */ + + int saved_errno = rtcb->pterrno; + + up_ledon(LED_SIGNAL); + + sdbg("rtcb=%p sigdeliver=%p sigpendactionq.head=%p\n", + rtcb, rtcb->xcp.sigdeliver, rtcb->sigpendactionq.head); + ASSERT(rtcb->xcp.sigdeliver != NULL); + + /* Save the real return state on the stack. */ + + up_copystate(regs, rtcb->xcp.regs); + regs[REG_PC] = rtcb->xcp.saved_pc; + regs[REG_SR] = rtcb->xcp.saved_sr; + + /* Get a local copy of the sigdeliver function pointer. + * we do this so that we can nullify the sigdeliver + * function point in the TCB and accept more signal + * deliveries while processing the current pending + * signals. + */ + + sigdeliver = rtcb->xcp.sigdeliver; + rtcb->xcp.sigdeliver = NULL; + + /* Then restore the task interrupt statat. */ + + irqrestore(regs[REG_SR] & 0x000000f0); + + /* Deliver the signals */ + + sigdeliver(rtcb); + + /* Output any debug messaged BEFORE restoreing errno + * (becuase they may alter errno), then restore the + * original errno that is needed by the user logic + * (it is probably EINTR). + */ + + sdbg("Resuming\n"); + rtcb->pterrno = saved_errno; + + /* Then restore the correct state for this thread of + * execution. + */ + + up_ledoff(LED_SIGNAL); + up_fullcontextrestore(regs); +#endif +} + +#endif /* !CONFIG_DISABLE_SIGNALS */ + diff --git a/nuttx/arch/sh/src/common/up_udelay.c b/nuttx/arch/sh/src/common/up_udelay.c new file mode 100644 index 000000000..55d27305c --- /dev/null +++ b/nuttx/arch/sh/src/common/up_udelay.c @@ -0,0 +1,128 @@ +/**************************************************************************** + * arch/sh/src/common/up_udelay.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/arch.h> + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +#define CONFIG_BOARD_LOOPSPER100USEC ((CONFIG_BOARD_LOOPSPERMSEC+5)/10) +#define CONFIG_BOARD_LOOPSPER10USEC ((CONFIG_BOARD_LOOPSPERMSEC+50)/100) +#define CONFIG_BOARD_LOOPSPERUSEC ((CONFIG_BOARD_LOOPSPERMSEC+500)/1000) + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Private Variables + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_udelay + * + * Description: + * Delay inline for the requested number of microseconds. NOTE: Because + * of all of the setup, several microseconds will be lost before the actual + * timing looop begins. Thus, the delay will always be a few microseconds + * longer than requested. + * + * *** NOT multi-tasking friendly *** + * + * ASSUMPTIONS: + * The setting CONFIG_BOARD_LOOPSPERMSEC has been calibrated + * + ****************************************************************************/ + +void up_udelay(unsigned int microseconds) +{ + volatile int i; + + /* We'll do this a little at a time because we expect that the + * CONFIG_BOARD_LOOPSPERUSEC is very inaccurate during to truncation in + * the divisions of its calculation. We'll use the largest values that + * we can in order to prevent significant error buildup in the loops. + */ + + while (microseconds > 1000) + { + for (i = 0; i < CONFIG_BOARD_LOOPSPERMSEC; i++) + { + } + microseconds -= 1000; + } + + while (microseconds > 100) + { + for (i = 0; i < CONFIG_BOARD_LOOPSPER100USEC; i++) + { + } + microseconds -= 100; + } + + while (microseconds > 10) + { + for (i = 0; i < CONFIG_BOARD_LOOPSPER10USEC; i++) + { + } + microseconds -= 10; + } + + while (microseconds > 0) + { + for (i = 0; i < CONFIG_BOARD_LOOPSPERUSEC; i++) + { + } + microseconds--; + } +} diff --git a/nuttx/arch/sh/src/common/up_unblocktask.c b/nuttx/arch/sh/src/common/up_unblocktask.c new file mode 100644 index 000000000..684993ba4 --- /dev/null +++ b/nuttx/arch/sh/src/common/up_unblocktask.c @@ -0,0 +1,158 @@ +/**************************************************************************** + * arch/sh/src/common/up_unblocktask.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> +#include <sched.h> +#include <debug.h> +#include <nuttx/arch.h> +#include "os_internal.h" +#include "clock_internal.h" +#include "up_internal.h" + +/**************************************************************************** + * Private Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_unblock_task + * + * Description: + * A task is currently in an inactive task list + * but has been prepped to execute. Move the TCB to the + * ready-to-run list, restore its context, and start execution. + * + * Inputs: + * tcb: Refers to the tcb to be unblocked. This tcb is + * in one of the waiting tasks lists. It must be moved to + * the ready-to-run list and, if it is the highest priority + * ready to run taks, executed. + * + ****************************************************************************/ + +void up_unblock_task(_TCB *tcb) +{ + /* Verify that the context switch can be performed */ + + if ((tcb->task_state < FIRST_BLOCKED_STATE) || + (tcb->task_state > LAST_BLOCKED_STATE)) + { + PANIC(OSERR_BADUNBLOCKSTATE); + } + else + { + _TCB *rtcb = (_TCB*)g_readytorun.head; + + /* Remove the task from the blocked task list */ + + sched_removeblocked(tcb); + + /* Reset its timeslice. This is only meaningful for round + * robin tasks but it doesn't here to do it for everything + */ + +#if CONFIG_RR_INTERVAL > 0 + tcb->timeslice = CONFIG_RR_INTERVAL / MSEC_PER_TICK; +#endif + + /* Add the task in the correct location in the prioritized + * g_readytorun task list + */ + + if (sched_addreadytorun(tcb)) + { + /* The currently active task has changed! We need to do + * a context switch to the new task. + * + * Are we in an interrupt handler? + */ + + if (current_regs) + { + /* Yes, then we have to do things differently. + * Just copy the current_regs into the OLD rtcb. + */ + + up_copystate(rtcb->xcp.regs, current_regs); + + /* Restore the exception context of the rtcb at the (new) head + * of the g_readytorun task list. + */ + + rtcb = (_TCB*)g_readytorun.head; + + /* Then switch contexts */ + + up_copystate(current_regs, rtcb->xcp.regs); + } + + /* We are not in an interrupt handler. Copy the user C context + * into the TCB of the task that was previously active. if + * up_saveusercontext returns a non-zero value, then this is really the + * previously running task restarting! + */ + + else if (!up_saveusercontext(rtcb->xcp.regs)) + { + /* Restore the exception context of the new task that is ready to + * run (probably tcb). This is the new rtcb at the head of the + * g_readytorun task list. + */ + + rtcb = (_TCB*)g_readytorun.head; + + /* Then switch contexts */ + + up_fullcontextrestore(rtcb->xcp.regs); + } + } + } +} diff --git a/nuttx/arch/sh/src/common/up_usestack.c b/nuttx/arch/sh/src/common/up_usestack.c new file mode 100644 index 000000000..5fd8acb8a --- /dev/null +++ b/nuttx/arch/sh/src/common/up_usestack.c @@ -0,0 +1,118 @@ +/**************************************************************************** + * arch/sh/src/common/up_usestack.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> +#include <sched.h> +#include <debug.h> +#include <nuttx/kmalloc.h> +#include <nuttx/arch.h> +#include "up_internal.h" + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Global Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_use_stack + * + * Description: + * Setup up stack-related information in the TCB + * using pre-allocated stack memory + * + * The following TCB fields must be initialized: + * adj_stack_size: Stack size after adjustment for hardware, + * processor, etc. This value is retained only for debug + * purposes. + * stack_alloc_ptr: Pointer to allocated stack + * adj_stack_ptr: Adjusted stack_alloc_ptr for HW. The + * initial value of the stack pointer. + * + * Inputs: + * tcb: The TCB of new task + * stack_size: The allocated stack size. + * + ****************************************************************************/ + +STATUS up_use_stack(_TCB *tcb, void *stack, size_t stack_size) +{ + size_t top_of_stack; + size_t size_of_stack; + + if (tcb->stack_alloc_ptr) + { + sched_free(tcb->stack_alloc_ptr); + } + + /* Save the stack allocation */ + + tcb->stack_alloc_ptr = stack; + + /* The Arm7Tdmi uses a push-down stack: the stack grows + * toward loweraddresses in memory. The stack pointer + * register, points to the lowest, valid work address + * (the "top" of the stack). Items on the stack are + * referenced as positive word offsets from sp. + */ + + top_of_stack = (uint32)tcb->stack_alloc_ptr + stack_size - 4; + + /* The Arm7Tdmi stack must be aligned at word (4 byte) + * boundaries. If necessary top_of_stack must be rounded + * down to the next boundary + */ + + top_of_stack &= ~3; + size_of_stack = top_of_stack - (uint32)tcb->stack_alloc_ptr + 4; + + /* Save the adjusted stack values in the _TCB */ + + tcb->adj_stack_size = top_of_stack; + tcb->adj_stack_size = size_of_stack; + + return OK; +} diff --git a/nuttx/arch/sh/src/sh1/Make.defs b/nuttx/arch/sh/src/sh1/Make.defs index 2f7a7b3e9..945471103 100644 --- a/nuttx/arch/sh/src/sh1/Make.defs +++ b/nuttx/arch/sh/src/sh1/Make.defs @@ -36,14 +36,18 @@ HEAD_ASRC = sh1_head.S CMN_ASRCS = -CMN_CSRCS = +CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \ + up_createstack.c up_doirq.c up_exit.c up_idle.c up_initialize.c \ + up_initialstate.c up_interruptcontext.c up_lowputs.c \ + up_mdelay.c up_puts.c up_releasepending.c up_releasestack.c \ + up_reprioritizertr.c up_udelay.c up_unblocktask.c up_usestack.c ifneq ($(CONFIG_DISABLE_SIGNALS),y) -CMN_CSRCS += +CMN_CSRCS += up_schedulesigaction.c up_sigdeliver.c endif CHIP_ASRCS = -CHIP_CSRCS = sh1_lowputc.c sh1_irq.c +CHIP_CSRCS = sh1_lowputc.c sh1_irq.c sh1_timerisr.c ifeq ($(CONFIG_USBDEV),y) CHIP_CSRCS += diff --git a/nuttx/arch/sh/src/sh1/sh1_head.S b/nuttx/arch/sh/src/sh1/sh1_head.S index f93ca8e6d..0b9d7bd27 100644 --- a/nuttx/arch/sh/src/sh1/sh1_head.S +++ b/nuttx/arch/sh/src/sh1/sh1_head.S @@ -329,11 +329,11 @@ __start0: .data .align 4 - .globl g_heapbase - .type g_heapbase, object -g_heapbase: + .globl _g_heapbase + .type _g_heapbase, object +_g_heapbase: .long _ebss+CONFIG_PROC_STACK_SIZE - .size g_heapbase, .-g_heapbase + .size _g_heapbase, .-_g_heapbase .end diff --git a/nuttx/arch/sh/src/sh1/sh1_irq.c b/nuttx/arch/sh/src/sh1/sh1_irq.c index 47eed797b..f56f642d5 100644 --- a/nuttx/arch/sh/src/sh1/sh1_irq.c +++ b/nuttx/arch/sh/src/sh1/sh1_irq.c @@ -83,8 +83,7 @@ void up_irqinitialize(void) /* Enable interrupts */ #ifndef CONFIG_SUPPRESS_INTERRUPTS -# warning "enable value needed" - irqrestore(0); + irqenable(); #endif } @@ -136,7 +135,7 @@ void up_maskack_irq(int irq) ****************************************************************************/ #warning "Should this be supported?" -int up_irqpriority(int irq, ubyte priority) +void up_irqpriority(int irq, ubyte priority) { #warning "To be provided" } diff --git a/nuttx/arch/sh/src/sh1/sh1_timerisr.c b/nuttx/arch/sh/src/sh1/sh1_timerisr.c new file mode 100644 index 000000000..d3bf495a1 --- /dev/null +++ b/nuttx/arch/sh/src/sh1/sh1_timerisr.c @@ -0,0 +1,117 @@ +/**************************************************************************** + * arch/sh/src/sh1/sh1_timerisr.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> +#include <time.h> +#include <debug.h> +#include <nuttx/arch.h> +#include <arch/board/board.h> + +#include "clock_internal.h" +#include "up_internal.h" +#include "up_arch.h" + +#include "chip.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/* The desired timer interrupt frequency is provided by the definition + * CLK_TCK (see include/time.h). CLK_TCK defines the desired number of + * system clock ticks per second. That value is a user configurable setting + * that defaults to 100 (100 ticks per second = 10 MS interval). + */ +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Global Functions + ****************************************************************************/ + +/**************************************************************************** + * Function: up_timerisr + * + * Description: + * The timer ISR will perform a variety of services for various portions + * of the systems. + * + ****************************************************************************/ + +int up_timerisr(int irq, uint32 *regs) +{ + /* Process timer interrupt */ + + sched_process_timer(); + return 0; +} + +/**************************************************************************** + * Function: up_timerinit + * + * Description: + * This function is called during start-up to initialize + * the timer interrupt. + * + ****************************************************************************/ + +void up_timerinit(void) +{ +#warning "Timer initialization logic needed" +#if 0 + + /* Set the IRQ interrupt priority */ + + up_irqpriority(STR71X_IRQ_SYSTIMER, 1); + + /* Attach the timer interrupt vector */ + + (void)irq_attach(STR71X_IRQ_SYSTIMER, (xcpt_t)up_timerisr); + + /* And enable the timer interrupt */ + + up_enable_irq(STR71X_IRQ_SYSTIMER); +#endif +} |