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61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <string.h>
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#include "esp_gdbstub.h"
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#include "esp_gdbstub_common.h"
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#include "soc/cpu.h"
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#include "sdkconfig.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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static void init_regfile(esp_gdbstub_gdb_regfile_t *dst)
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{
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memset(dst, 0, sizeof(*dst));
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}
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void esp_gdbstub_frame_to_regfile(const esp_gdbstub_frame_t *frame, esp_gdbstub_gdb_regfile_t *dst)
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{
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init_regfile(dst);
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dst->pc = frame->mepc;
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// We omit register x0 here since it's the zero register and always hard-wired to 0.
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// See The RISC-V Instruction Set Manual Volume I: Unprivileged ISA Document Version 20191213 for more details.
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memcpy(&(dst->x[1]), &frame->ra, sizeof(uint32_t) * 31);
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}
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#ifdef CONFIG_ESP_GDBSTUB_SUPPORT_TASKS
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/* Represents FreeRTOS TCB structure */
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typedef struct {
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uint8_t *top_of_stack;
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/* Other members aren't needed */
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} dummy_tcb_t;
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void esp_gdbstub_tcb_to_regfile(TaskHandle_t tcb, esp_gdbstub_gdb_regfile_t *dst)
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{
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const dummy_tcb_t *dummy_tcb = (const dummy_tcb_t *) tcb;
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const RvExcFrame *frame = (RvExcFrame *) dummy_tcb->top_of_stack;
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esp_gdbstub_frame_to_regfile(frame, dst);
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}
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#endif // CONFIG_ESP_GDBSTUB_SUPPORT_TASKS
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int esp_gdbstub_get_signal(const esp_gdbstub_frame_t *frame)
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{
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return 5; // SIGTRAP, see IDF-2490
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}
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