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/****************************************************************************
* arch/sh/src/m16c/m16c_assert.c
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 <stdint.h>
#include <debug.h>
#include <nuttx/irq.h>
#include <nuttx/arch.h>
#include "up_arch.h"
#include "up_internal.h"
#include "sched/sched.h"
#include "chip.h"
#ifdef CONFIG_ARCH_STACKDUMP
/****************************************************************************
* Definitions
****************************************************************************/
/* Output debug info if stack dump is selected -- even if debug is not
* selected.
*/
#ifdef CONFIG_ARCH_STACKDUMP
# undef lldbg
# define lldbg lowsyslog
#endif
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: m16c_getsp
****************************************************************************/
static inline uint16_t m16c_getsp(void)
{
uint16_t sp;
__asm__ __volatile__
(
"\tstc sp, %0\n\t"
: "=r" (sp)
:
: "memory"
);
return sp;
}
/****************************************************************************
* Name: m16c_getusersp
****************************************************************************/
#if CONFIG_ARCH_INTERRUPTSTACK > 3
static inline uint16_t m16c_getusersp(void)
{
uint8_t *ptr = (uint8_t*) current_regs;
return (uint16_t)ptr[REG_SP] << 8 | ptr[REG_SP+1];
}
#endif
/****************************************************************************
* Name: m16c_stackdump
****************************************************************************/
static void m16c_stackdump(uint16_t sp, uint16_t stack_base)
{
uint16_t stack;
for (stack = sp & ~7; stack < stack_base; stack += 8)
{
uint8_t *ptr = (uint8_t*)stack;
lldbg("%04x: %02x %02x %02x %02x %02x %02x %02x %02x\n",
stack, ptr[0], ptr[1], ptr[2], ptr[3], ptr[4], ptr[5], ptr[6], ptr[7]);
}
}
/****************************************************************************
* Name: m16c_registerdump
****************************************************************************/
static inline void m16c_registerdump(void)
{
uint8_t *ptr = (uint8_t*) current_regs;
/* Are user registers available from interrupt processing? */
if (ptr)
{
/* Yes.. dump the interrupt registers */
lldbg("PC: %02x%02x%02x FLG: %02x00%02x FB: %02x%02x SB: %02x%02x SP: %02x%02x\n",
ptr[REG_FLGPCHI] & 0xff, ptr[REG_PC], ptr[REG_PC+1],
ptr[REG_FLGPCHI] >> 8, ptr[REG_FLG],
ptr[REG_FB], ptr[REG_FB+1],
ptr[REG_SB], ptr[REG_SB+1],
ptr[REG_SP], ptr[REG_SP+1]);
lldbg("R0: %02x%02x R1: %02x%02x R2: %02x%02x A0: %02x%02x A1: %02x%02x\n",
ptr[REG_R0], ptr[REG_R0+1], ptr[REG_R1], ptr[REG_R1+1],
ptr[REG_R2], ptr[REG_R2+1], ptr[REG_R3], ptr[REG_R3+1],
ptr[REG_A0], ptr[REG_A0+1], ptr[REG_A1], ptr[REG_A1+1]);
}
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_dumpstate
****************************************************************************/
void up_dumpstate(void)
{
struct tcb_s *rtcb = (struct tcb_s*)g_readytorun.head;
uint16_t sp = m16c_getsp();
uint16_t ustackbase;
uint16_t ustacksize;
#if CONFIG_ARCH_INTERRUPTSTACK > 3
uint16_t istackbase;
uint16_t istacksize;
#endif
/* Get the limits on the user stack memory */
if (rtcb->pid == 0)
{
ustackbase = g_idle_topstack - 1;
ustacksize = CONFIG_IDLETHREAD_STACKSIZE;
}
else
{
ustackbase = (uint16_t)rtcb->adj_stack_ptr;
ustacksize = (uint16_t)rtcb->adj_stack_size;
}
/* Get the limits on the interrupt stack memory. The near RAM memory map is as follows:
*
* 0x00400 - DATA Size: Determined by linker
* BSS Size: Determined by linker
* Interrupt stack Size: CONFIG_ARCH_INTERRUPTSTACK
* Idle stack Size: CONFIG_IDLETHREAD_STACKSIZE
* Heap Size: Everything remaining
* 0x00bff - (end+1)
*/
#if CONFIG_ARCH_INTERRUPTSTACK > 3
istackbase = g_enbss;
istacksize = CONFIG_ARCH_INTERRUPTSTACK;
/* Show interrupt stack info */
lldbg("sp: %04x\n", sp);
lldbg("IRQ stack:\n");
lldbg(" base: %04x\n", istackbase);
lldbg(" size: %04x\n", istacksize);
/* Does the current stack pointer lie within the interrupt
* stack?
*/
if (sp <= istackbase && sp > istackbase - istacksize)
{
/* Yes.. dump the interrupt stack */
m16c_stackdump(sp, istackbase);
/* Extract the user stack pointer from the register area */
sp = m16c_getusersp();
lldbg("sp: %04x\n", sp);
}
/* Show user stack info */
lldbg("User stack:\n");
lldbg(" base: %04x\n", ustackbase);
lldbg(" size: %04x\n", ustacksize);
#else
lldbg("sp: %04x\n", sp);
lldbg("stack base: %04x\n", ustackbase);
lldbg("stack size: %04x\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
{
m16c_stackdump(sp, ustackbase);
}
/* Then dump the registers (if available) */
m16c_registerdump();
}
#endif /* CONFIG_ARCH_STACKDUMP */
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