1 /*
2 * Copyright (c) 2018 Nordic Semiconductor ASA
3 * Copyright (c) 2018 Intel Corporation
4 *
5 * SPDX-License-Identifier: Apache-2.0
6 */
7
8 #include <stdio.h>
9 #include <stddef.h>
10 #include <zephyr/logging/log_backend.h>
11 #include <zephyr/logging/log_backend_std.h>
12 #include <zephyr/logging/log_core.h>
13 #include <zephyr/logging/log_output.h>
14 #include <zephyr/irq.h>
15 #include <zephyr/arch/posix/posix_trace.h>
16
17 #define _STDOUT_BUF_SIZE 256
18 static char stdout_buff[_STDOUT_BUF_SIZE];
19 static int n_pend; /* Number of pending characters in buffer */
20 static uint32_t log_format_current = CONFIG_LOG_BACKEND_NATIVE_POSIX_OUTPUT_DEFAULT;
21
preprint_char(int c)22 static void preprint_char(int c)
23 {
24 int printnow = 0;
25
26 if (c == '\r') {
27 /* Discard carriage returns */
28 return;
29 }
30 if (c != '\n') {
31 stdout_buff[n_pend++] = c;
32 stdout_buff[n_pend] = 0;
33 } else {
34 printnow = 1;
35 }
36
37 if (n_pend >= _STDOUT_BUF_SIZE - 1) {
38 printnow = 1;
39 }
40
41 if (printnow) {
42 posix_print_trace("%s\n", stdout_buff);
43 n_pend = 0;
44 stdout_buff[0] = 0;
45 }
46 }
47
48 static uint8_t buf[_STDOUT_BUF_SIZE];
49
char_out(uint8_t * data,size_t length,void * ctx)50 static int char_out(uint8_t *data, size_t length, void *ctx)
51 {
52 for (size_t i = 0; i < length; i++) {
53 preprint_char(data[i]);
54 }
55
56 return length;
57 }
58
59 LOG_OUTPUT_DEFINE(log_output_posix, char_out, buf, sizeof(buf));
60
panic(struct log_backend const * const backend)61 static void panic(struct log_backend const *const backend)
62 {
63 log_output_flush(&log_output_posix);
64 }
65
dropped(const struct log_backend * const backend,uint32_t cnt)66 static void dropped(const struct log_backend *const backend, uint32_t cnt)
67 {
68 ARG_UNUSED(backend);
69
70 log_output_dropped_process(&log_output_posix, cnt);
71 }
72
process(const struct log_backend * const backend,union log_msg_generic * msg)73 static void process(const struct log_backend *const backend,
74 union log_msg_generic *msg)
75 {
76 uint32_t flags = log_backend_std_get_flags();
77
78 log_format_func_t log_output_func = log_format_func_t_get(log_format_current);
79
80 log_output_func(&log_output_posix, &msg->log, flags);
81 }
82
format_set(const struct log_backend * const backend,uint32_t log_type)83 static int format_set(const struct log_backend *const backend, uint32_t log_type)
84 {
85 log_format_current = log_type;
86 return 0;
87 }
88
89 const struct log_backend_api log_backend_native_posix_api = {
90 .process = process,
91 .panic = panic,
92 .dropped = IS_ENABLED(CONFIG_LOG_MODE_IMMEDIATE) ? NULL : dropped,
93 .format_set = format_set,
94 };
95
96 LOG_BACKEND_DEFINE(log_backend_native_posix,
97 log_backend_native_posix_api,
98 true);
99
