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feat(gdbstub): modify GDB stub for ESP8266

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dongheng
2019-10-28 15:47:13 +08:00
committed by Dong Heng
parent 56747578d2
commit 1e69cbd242
19 changed files with 272 additions and 78 deletions
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52
components/esp_gdbstub/esp8266/gdbstub_esp8266.c Normal file
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// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "esp8266/uart_register.h"
#include "esp8266/eagle_soc.h"
#include "sdkconfig.h"
#include "esp_task_wdt.h"
#define UART_NUM CONFIG_CONSOLE_UART_NUM
void esp_gdbstub_target_init(void)
{
}
int esp_gdbstub_getchar(void)
{
while (((READ_PERI_REG(UART_STATUS(UART_NUM)) >> UART_RXFIFO_CNT_S) & UART_RXFIFO_CNT) == 0) {
esp_task_wdt_reset();
}
return READ_PERI_REG(UART_FIFO(UART_NUM));
}
void esp_gdbstub_putchar(int c)
{
while (((READ_PERI_REG(UART_STATUS(UART_NUM)) >> UART_TXFIFO_CNT_S) & UART_TXFIFO_CNT) >= 126) {
;
}
WRITE_PERI_REG(UART_FIFO(UART_NUM) , c);
}
int esp_gdbstub_readmem(intptr_t addr)
{
if (addr < 0x3ff00000 || addr >= 0x60010000) {
/* see cpu_configure_region_protection */
return -1;
}
uint32_t val_aligned = *(uint32_t *)(addr & (~3));
uint32_t shift = (addr & 3) * 8;
return (val_aligned >> shift) & 0xff;
}