/*
* Copyright (c) 2010 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/** @addtogroup kernel_amd64
* @{
*/
/** @file
*/
#include <stacktrace.h>
#include <stdbool.h>
#include <syscall/copy.h>
#include <typedefs.h>
#define FRAME_OFFSET_FP_PREV 0
#define FRAME_OFFSET_RA 1
bool kernel_stack_trace_context_validate(stack_trace_context_t *ctx)
{
return ctx->fp != 0;
}
bool kernel_frame_pointer_prev(stack_trace_context_t *ctx, uintptr_t *prev)
{
uint64_t *stack = (void *) ctx->fp;
*prev = stack[FRAME_OFFSET_FP_PREV];
return true;
}
bool kernel_return_address_get(stack_trace_context_t *ctx, uintptr_t *ra)
{
uint64_t *stack = (void *) ctx->fp;
*ra = stack[FRAME_OFFSET_RA];
return true;
}
bool uspace_stack_trace_context_validate(stack_trace_context_t *ctx)
{
return ctx->fp != 0;
}
bool uspace_frame_pointer_prev(stack_trace_context_t *ctx, uintptr_t *prev)
{
return !copy_from_uspace(prev,
ctx->fp + sizeof(uintptr_t) * FRAME_OFFSET_FP_PREV, sizeof(*prev));
}
bool uspace_return_address_get(stack_trace_context_t *ctx, uintptr_t *ra)
{
return !copy_from_uspace(ra,
ctx->fp + sizeof(uintptr_t) * FRAME_OFFSET_RA, sizeof(*ra));
}
/** @}
*/