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/****************************************************************************
* arch/mips/src/mips32/up_dumpstate.c
*
* Copyright (C) 2011 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 <stdint.h>
#include <stdlib.h>
#include <assert.h>
#include <debug.h>
#include <nuttx/irq.h>
#include <nuttx/arch.h>
#include <arch/board/board.h>
#include "up_arch.h"
#include "os_internal.h"
#include "up_internal.h"
#ifdef CONFIG_ARCH_STACKDUMP
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Output debug info if stack dump is selected -- even if debug is not
* selected.
*/
#undef lldbg
#define lldbg lib_lowprintf
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: up_getsp
****************************************************************************/
/* I don't know if the builtin to get SP is enabled */
static inline uint32_t up_getsp(void)
{
register uint32_t sp;
__asm__
(
"\tadd %0, $0, $29\n"
: "=r"(sp)
);
return sp;
}
/****************************************************************************
* Name: up_stackdump
****************************************************************************/
static void up_stackdump(uint32_t sp, uint32_t stack_base)
{
uint32_t stack ;
for (stack = sp & ~0x1f; stack < stack_base; stack += 32)
{
uint32_t *ptr = (uint32_t*)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]);
}
}
/****************************************************************************
* Name: up_registerdump
****************************************************************************/
static inline void up_registerdump(void)
{
/* Are user registers available from interrupt processing? */
if (current_regs)
{
lldbg("MFLO:%08x MFHI:%08x EPC:%08x STATUS:%08x\n",
current_regs[REG_MFLO], current_regs[REG_MFHI], current_regs[REG_EPC],
current_regs[REG_STATUS]);
lldbg("AT:%08x V0:$08x V1:%08x A0:%08x A1:%08x A2:%08x A3:%08x\n",
current_regs[REG_AT], current_regs[REG_V0], current_regs[REG_V1],
current_regs[REG_A0], current_regs[REG_A1], current_regs[REG_A2],
current_regs[REG_A3]);
lldbg("T0:%08x T1:$08x T2:%08x T3:%08x T4:%08x T5:%08x T6:%08x T7:%08x\n",
current_regs[REG_T0], current_regs[REG_T1], current_regs[REG_T2],
current_regs[REG_T3], current_regs[REG_T4], current_regs[REG_T5],
current_regs[REG_T6], current_regs[REG_T7]);
lldbg("S0:%08x S1:$08x S2:%08x S3:%08x S4:%08x S5:%08x S6:%08x S7:%08x\n",
current_regs[REG_S0], current_regs[REG_S1], current_regs[REG_S2],
current_regs[REG_S3], current_regs[REG_S4], current_regs[REG_S5],
current_regs[REG_S6], current_regs[REG_S7]);
#ifdef MIPS32_SAVE_GP
lldbg("T8:%08x T9:$08x GP:%08x SP:%08x FP:%08x RA:%08x\n",
current_regs[REG_T8], current_regs[REG_T9], current_regs[REG_GP],
current_regs[REG_SP], current_regs[REG_FP], current_regs[REG_RA]);
#else
lldbg("T8:%08x T9:$08x SP:%08x FP:%08x RA:%08x\n",
current_regs[REG_T8], current_regs[REG_T9], current_regs[REG_SP],
current_regs[REG_FP], current_regs[REG_RA]);
#endif
}
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_dumpstate
****************************************************************************/
void up_dumpstate(void)
{
_TCB *rtcb = (_TCB*)g_readytorun.head;
uint32_t sp = up_getsp();
uint32_t ustackbase;
uint32_t ustacksize;
#if CONFIG_ARCH_INTERRUPTSTACK > 3
uint32_t istackbase;
uint32_t istacksize;
#endif
/* Get the limits on the user stack memory */
if (rtcb->pid == 0)
{
ustackbase = g_heapbase - 4;
ustacksize = CONFIG_IDLETHREAD_STACKSIZE;
}
else
{
ustackbase = (uint32_t)rtcb->adj_stack_ptr;
ustacksize = (uint32_t)rtcb->adj_stack_size;
}
/* Get the limits on the interrupt stack memory */
#if CONFIG_ARCH_INTERRUPTSTACK > 3
istackbase = (uint32_t)&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();
}
#endif /* CONFIG_ARCH_STACKDUMP */
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