initial commit

libs/newlib/abort.c

@@ -0,0 +1,39 @@
+/*
+ * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include <stdint.h>
+#include <string.h>
+
+#include "esp_system.h"
+#include "esp_cpu.h"
+
+#include "soc/soc_caps.h"
+
+void __attribute__((noreturn)) abort(void)
+{
+#define ERR_STR1  "abort() was called at PC 0x"
+#define ERR_STR2  " on core "
+
+    _Static_assert(UINTPTR_MAX == 0xffffffff, "abort() assumes 32-bit addresses");
+    _Static_assert(SOC_CPU_CORES_NUM < 10, "abort() assumes number of cores is 1 to 9");
+
+    char addr_buf[9] = { 0 };
+    char core_buf[2] = { 0 };
+
+    char buf[sizeof(ERR_STR1) + sizeof(addr_buf) + sizeof(core_buf) + sizeof(ERR_STR2) + 1 /* null char */] = { 0 };
+
+    itoa((uint32_t)(__builtin_return_address(0) - 3), addr_buf, 16);
+    itoa(esp_cpu_get_core_id(), core_buf, 10);
+
+    const char *str[] = { ERR_STR1, addr_buf, ERR_STR2, core_buf };
+
+    char *dest = buf;
+
+    for (size_t i = 0; i < sizeof(str) / sizeof(str[0]); i++) {
+        strcat(dest, str[i]);
+    }
+
+    esp_system_abort(buf);
+}