instrument_cov.c

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// SPDX-License-Identifier: MIT
// SanitizerCoverage hooks for ascii-chat instrumentation runtime
 
#include "tooling/panic/instrument_log.h"
#include "common.h"
 
#include <stdint.h>
 
void __sanitizer_cov_trace_pc_guard(uint32_t *guard) {
  if (guard == NULL || *guard == 0U) {
    return;
  }
 
  asciichat_instr_log_pc((uintptr_t)__builtin_return_address(0));
}
 
void __sanitizer_cov_trace_pc_guard_init(uint32_t *start, uint32_t *stop) {
  if (start == NULL || stop == NULL || start == stop) {
    return;
  }
 
  if (*start != 0U) {
    return;
  }
 
  uint32_t counter = 1U;
  for (uint32_t *it = start; it < stop; ++it) {
    if (*it == 0U) {
      *it = counter++;
    }
  }
}