86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
/*
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* Copyright (c) 2019 Intel Corporation Inc.
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* Copyright (c) 2018 Nordic Semiconductor ASA
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* Copyright (c) 2018 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdio.h>
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#include <stddef.h>
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#include <logging/log_backend.h>
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#include <logging/log_core.h>
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#include <logging/log_msg.h>
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#include <logging/log_output.h>
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#include <logging/log_backend_std.h>
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#include <xtensa/simcall.h>
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#define CHAR_BUF_SIZE (IS_ENABLED(CONFIG_LOG_IMMEDIATE) ? \
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1 : CONFIG_LOG_BACKEND_XTENSA_OUTPUT_BUFFER_SIZE)
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static uint8_t xtensa_log_buf[CHAR_BUF_SIZE];
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static int char_out(uint8_t *data, size_t length, void *ctx)
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{
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register int a2 __asm__ ("a2") = SYS_write;
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register int a3 __asm__ ("a3") = 1;
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register int a4 __asm__ ("a4") = (int) data;
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register int a5 __asm__ ("a5") = length;
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__asm__ volatile("simcall"
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: "=a"(a2), "=a"(a3)
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: "a"(a2), "a"(a3), "a"(a4), "a"(a5));
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return length;
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}
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LOG_OUTPUT_DEFINE(log_output_xsim, char_out,
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xtensa_log_buf, sizeof(xtensa_log_buf));
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static void put(const struct log_backend *const backend,
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struct log_msg *msg)
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{
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log_backend_std_put(&log_output_xsim, 0, msg);
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}
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static void panic(struct log_backend const *const backend)
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{
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log_backend_std_panic(&log_output_xsim);
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}
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static void dropped(const struct log_backend *const backend, uint32_t cnt)
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{
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ARG_UNUSED(backend);
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log_backend_std_dropped(&log_output_xsim, cnt);
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}
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static void sync_string(const struct log_backend *const backend,
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struct log_msg_ids src_level, uint32_t timestamp,
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const char *fmt, va_list ap)
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{
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log_backend_std_sync_string(&log_output_xsim, 0, src_level,
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timestamp, fmt, ap);
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}
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static void sync_hexdump(const struct log_backend *const backend,
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struct log_msg_ids src_level, uint32_t timestamp,
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const char *metadata, const uint8_t *data, uint32_t length)
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{
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log_backend_std_sync_hexdump(&log_output_xsim, 0, src_level,
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timestamp, metadata, data, length);
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}
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const struct log_backend_api log_backend_xtensa_sim_api = {
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.put = IS_ENABLED(CONFIG_LOG_IMMEDIATE) ? NULL : put,
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.put_sync_string = IS_ENABLED(CONFIG_LOG_IMMEDIATE) ?
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sync_string : NULL,
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.put_sync_hexdump = IS_ENABLED(CONFIG_LOG_IMMEDIATE) ?
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sync_hexdump : NULL,
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.panic = panic,
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.dropped = IS_ENABLED(CONFIG_LOG_IMMEDIATE) ? NULL : dropped,
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};
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LOG_BACKEND_DEFINE(log_backend_xtensa_sim, log_backend_xtensa_sim_api, true);
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