diff options
Diffstat (limited to 'nuttx/arch/mips/src/mips32/up_dumpstate.c')
| -rw-r--r-- | nuttx/arch/mips/src/mips32/up_dumpstate.c | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/nuttx/arch/mips/src/mips32/up_dumpstate.c b/nuttx/arch/mips/src/mips32/up_dumpstate.c new file mode 100644 index 000000000..83495e3a2 --- /dev/null +++ b/nuttx/arch/mips/src/mips32/up_dumpstate.c @@ -0,0 +1,240 @@ +/**************************************************************************** + * arch/mips/src/arm/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\n", + current_regs[REG_MFLO], current_regs[REG_MFHI], current_regs[REG_EPC]); + 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 */ |