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  • kernel/arch/sparc64/src/debug/stacktrace.c

    r819a768 rd99c1d2  
    3737#include <typedefs.h>
    3838
    39 #include <arch.h>
    40 #include <arch/stack.h>
    41 #include <arch/trap/trap_table.h>
    42 
    43 #if defined(SUN4V)
    44 #include <arch/sun4v/arch.h>
    45 #endif
    46 
    47 #define FRAME_OFFSET_FP_PREV    14
    48 #define FRAME_OFFSET_RA         15
    49 
    50 extern void alloc_window_and_flush(void);
    51 
    5239bool kernel_frame_pointer_validate(uintptr_t fp)
    5340{
    54         uintptr_t kstack;
    55        
    56 #if defined(SUN4U)
    57         kstack = read_from_ag_g6();
    58 #elif defined(SUN4V)
    59         kstack = asi_u64_read(ASI_SCRATCHPAD, SCRATCHPAD_KSTACK);
    60 #endif
    61 
    62         kstack += STACK_BIAS;
    63         kstack -= PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE;
    64 
    65         if (THREAD && (fp == kstack))
    66                 return false;
    67         return fp != 0;
     41        return false;
    6842}
    6943
    7044bool kernel_frame_pointer_prev(uintptr_t fp, uintptr_t *prev)
    7145{
    72         uint64_t *stack = (void *) fp;
    73         alloc_window_and_flush();
    74         *prev = stack[FRAME_OFFSET_FP_PREV] + STACK_BIAS;
    75         return true;
     46        return false;
    7647}
    7748
    7849bool kernel_return_address_get(uintptr_t fp, uintptr_t *ra)
    7950{
    80         uint64_t *stack = (void *) fp;
    81         alloc_window_and_flush();
    82         *ra = stack[FRAME_OFFSET_RA];
    83         return true;
     51        return false;
    8452}
    8553
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