| /* |
| * Copyright (c) 2019 Intel Corporation Inc. |
| * Copyright (c) 2018 Nordic Semiconductor ASA |
| * Copyright (c) 2018 Intel Corporation |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <stdio.h> |
| #include <stddef.h> |
| #include <logging/log_backend.h> |
| #include <logging/log_core.h> |
| #include <logging/log_msg.h> |
| #include <logging/log_output.h> |
| #include "log_backend_std.h" |
| #include <xtensa/simcall.h> |
| |
| #define CHAR_BUF_SIZE CONFIG_LOG_BACKEND_XTENSA_OUTPUT_BUFFER_SIZE |
| |
| static u8_t buf[CHAR_BUF_SIZE]; |
| |
| static int char_out(u8_t *data, size_t length, void *ctx) |
| { |
| register int a1 __asm__ ("a2") = SYS_write; |
| register int b1 __asm__ ("a3") = 1; |
| register int c1 __asm__ ("a4") = (int) data; |
| register int d1 __asm__ ("a5") = length; |
| register int ret_val __asm__ ("a2"); |
| register int ret_err __asm__ ("a3"); |
| |
| __asm__ __volatile__ ( |
| "simcall\n" |
| "mov %0, a2\n" |
| "mov %1, a3\n" |
| : "=a" (ret_val), "=a" (ret_err), "+r"(a1), "+r"(b1) |
| : "r"(c1), "r"(d1) |
| : "memory"); |
| return length; |
| } |
| |
| LOG_OUTPUT_DEFINE(log_output, char_out, buf, sizeof(buf)); |
| |
| static void put(const struct log_backend *const backend, |
| struct log_msg *msg) |
| { |
| log_backend_std_put(&log_output, 0, msg); |
| |
| } |
| |
| static void panic(struct log_backend const *const backend) |
| { |
| log_backend_std_panic(&log_output); |
| } |
| |
| static void dropped(const struct log_backend *const backend, u32_t cnt) |
| { |
| ARG_UNUSED(backend); |
| |
| log_backend_std_dropped(&log_output, cnt); |
| } |
| |
| static void sync_string(const struct log_backend *const backend, |
| struct log_msg_ids src_level, u32_t timestamp, |
| const char *fmt, va_list ap) |
| { |
| log_backend_std_sync_string(&log_output, 0, src_level, |
| timestamp, fmt, ap); |
| } |
| |
| static void sync_hexdump(const struct log_backend *const backend, |
| struct log_msg_ids src_level, u32_t timestamp, |
| const char *metadata, const u8_t *data, u32_t length) |
| { |
| log_backend_std_sync_hexdump(&log_output, 0, src_level, |
| timestamp, metadata, data, length); |
| } |
| |
| const struct log_backend_api log_backend_xtensa_sim_api = { |
| .put = IS_ENABLED(CONFIG_LOG_IMMEDIATE) ? NULL : put, |
| .put_sync_string = IS_ENABLED(CONFIG_LOG_IMMEDIATE) ? |
| sync_string : NULL, |
| .put_sync_hexdump = IS_ENABLED(CONFIG_LOG_IMMEDIATE) ? |
| sync_hexdump : NULL, |
| .panic = panic, |
| .dropped = IS_ENABLED(CONFIG_LOG_IMMEDIATE) ? NULL : dropped, |
| }; |
| |
| LOG_BACKEND_DEFINE(log_backend_xtensa_sim, log_backend_xtensa_sim_api, true); |