HelenOS sources
This source file includes following definitions.
- kernel_stack_trace_context_validate
- kernel_frame_pointer_prev
- kernel_return_address_get
- uspace_stack_trace_context_validate
- uspace_frame_pointer_prev
- uspace_return_address_get
#include <stacktrace.h>
#include <stdbool.h>
#include <stdint.h>
#include <syscall/copy.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)
{
uint32_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)
{
uint32_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));
}
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