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logging: move backends to subdirectory

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This is mainly to reduce clutter in `subsys/logging`, but also to make
backend management slightly easier.

Signed-off-by: Christopher Friedt <cfriedt@fb.com>
This commit is contained in:
Christopher Friedt 2022-09-24 13:39:42 -04:00 • committed by Christopher Friedt
commit f5587552bb
29 changed files with 584 additions and 545 deletions
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75
subsys/logging/backends/log_backend_xtensa_sim.c Normal file
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/*
* 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 <zephyr/logging/log_backend.h>
#include <zephyr/logging/log_core.h>
#include <zephyr/logging/log_output.h>
#include <zephyr/logging/log_backend_std.h>
#include <xtensa/simcall.h>
#define CHAR_BUF_SIZE (IS_ENABLED(CONFIG_LOG_MODE_IMMEDIATE) ? \
1 : CONFIG_LOG_BACKEND_XTENSA_OUTPUT_BUFFER_SIZE)
static uint8_t xtensa_log_buf[CHAR_BUF_SIZE];
static uint32_t log_format_current = CONFIG_LOG_BACKEND_XTENSA_SIM_OUTPUT_DEFAULT;
static int char_out(uint8_t *data, size_t length, void *ctx)
{
register int a2 __asm__ ("a2") = SYS_write;
register int a3 __asm__ ("a3") = 1;
register int a4 __asm__ ("a4") = (int) data;
register int a5 __asm__ ("a5") = length;
__asm__ volatile("simcall"
: "=a"(a2), "=a"(a3)
: "a"(a2), "a"(a3), "a"(a4), "a"(a5));
return length;
}
LOG_OUTPUT_DEFINE(log_output_xsim, char_out,
xtensa_log_buf, sizeof(xtensa_log_buf));
static void process(const struct log_backend *const backend,
union log_msg_generic *msg)
{
uint32_t flags = log_backend_std_get_flags();
log_format_func_t log_output_func = log_format_func_t_get(log_format_current);
log_output_func(&log_output_xsim, &msg->log, flags);
}
static int format_set(const struct log_backend *const backend, uint32_t log_type)
{
log_format_current = log_type;
return 0;
}
static void panic(struct log_backend const *const backend)
{
log_backend_std_panic(&log_output_xsim);
}
static void dropped(const struct log_backend *const backend, uint32_t cnt)
{
ARG_UNUSED(backend);
log_backend_std_dropped(&log_output_xsim, cnt);
}
const struct log_backend_api log_backend_xtensa_sim_api = {
.process = process,
.panic = panic,
.dropped = IS_ENABLED(CONFIG_LOG_MODE_IMMEDIATE) ? NULL : dropped,
.format_set = format_set,
};
LOG_BACKEND_DEFINE(log_backend_xtensa_sim, log_backend_xtensa_sim_api, true);