/* * Copyright (C) 2001 - 2003 Jeff Dike (jdike@addtoit.com) * Licensed under the GPL */ #include "linux/config.h" #include "linux/kernel.h" #include "linux/smp.h" #include "linux/sched.h" #include "linux/kallsyms.h" #include "asm/ptrace.h" #include "sysrq.h" /* This is declared by <linux/sched.h> */ void show_regs(struct pt_regs *regs) { printk("\n"); printk("EIP: %04lx:[<%08lx>] CPU: %d %s", 0xffff & PT_REGS_CS(regs), PT_REGS_IP(regs), smp_processor_id(), print_tainted()); if (PT_REGS_CS(regs) & 3) printk(" ESP: %04lx:%08lx", 0xffff & PT_REGS_SS(regs), PT_REGS_SP(regs)); printk(" EFLAGS: %08lx\n %s\n", PT_REGS_EFLAGS(regs), print_tainted()); printk("EAX: %08lx EBX: %08lx ECX: %08lx EDX: %08lx\n", PT_REGS_EAX(regs), PT_REGS_EBX(regs), PT_REGS_ECX(regs), PT_REGS_EDX(regs)); printk("ESI: %08lx EDI: %08lx EBP: %08lx", PT_REGS_ESI(regs), PT_REGS_EDI(regs), PT_REGS_EBP(regs)); printk(" DS: %04lx ES: %04lx\n", 0xffff & PT_REGS_DS(regs), 0xffff & PT_REGS_ES(regs)); show_trace(NULL, (unsigned long *) ®s); } /* Copied from i386. */ static inline int valid_stack_ptr(struct thread_info *tinfo, void *p) { return p > (void *)tinfo && p < (void *)tinfo + THREAD_SIZE - 3; } /* Adapted from i386 (we also print the address we read from). */ static inline unsigned long print_context_stack(struct thread_info *tinfo, unsigned long *stack, unsigned long ebp) { unsigned long addr; #ifdef CONFIG_FRAME_POINTER while (valid_stack_ptr(tinfo, (void *)ebp)) { addr = *(unsigned long *)(ebp + 4); printk("%08lx: [<%08lx>]", ebp + 4, addr); print_symbol(" %s", addr); printk("\n"); ebp = *(unsigned long *)ebp; } #else while (valid_stack_ptr(tinfo, stack)) { addr = *stack; if (__kernel_text_address(addr)) { printk("%08lx: [<%08lx>]", (unsigned long) stack, addr); print_symbol(" %s", addr); printk("\n"); } stack++; } #endif return ebp; } void show_trace(struct task_struct* task, unsigned long * stack) { unsigned long ebp; struct thread_info *context; /* Turn this into BUG_ON if possible. */ if (!stack) { stack = (unsigned long*) &stack; printk("show_trace: got NULL stack, implicit assumption task == current"); WARN_ON(1); } if (!task) task = current; if (task != current) { ebp = (unsigned long) KSTK_EBP(task); } else { asm ("movl %%ebp, %0" : "=r" (ebp) : ); } context = (struct thread_info *) ((unsigned long)stack & (~(THREAD_SIZE - 1))); print_context_stack(context, stack, ebp); printk("\n"); }