3fe191b0df
Allow to set break point again when all break points are removed and wasm app starts running.
92 lines
2.2 KiB
C
92 lines
2.2 KiB
C
/*
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* Copyright (C) 2021 Ant Group. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*/
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#include "bh_platform.h"
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#include "packets.h"
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#include "gdbserver.h"
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void
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write_data_raw(WASMGDBServer *gdbserver, const uint8 *data, ssize_t len)
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{
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ssize_t nwritten;
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nwritten = os_socket_send(gdbserver->socket_fd, data, len);
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if (nwritten < 0) {
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LOG_ERROR("Write error\n");
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exit(-2);
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}
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}
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void
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write_hex(WASMGDBServer *gdbserver, unsigned long hex)
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{
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char buf[32];
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size_t len;
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len = snprintf(buf, sizeof(buf) - 1, "%02lx", hex);
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write_data_raw(gdbserver, (uint8 *)buf, len);
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}
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void
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write_packet_bytes(WASMGDBServer *gdbserver, const uint8 *data,
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size_t num_bytes)
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{
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uint8 checksum;
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size_t i;
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write_data_raw(gdbserver, (uint8 *)"$", 1);
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for (i = 0, checksum = 0; i < num_bytes; ++i)
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checksum += data[i];
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write_data_raw(gdbserver, (uint8 *)data, num_bytes);
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write_data_raw(gdbserver, (uint8 *)"#", 1);
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write_hex(gdbserver, checksum);
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}
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void
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write_packet(WASMGDBServer *gdbserver, const char *data)
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{
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LOG_VERBOSE("send replay:%s", data);
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write_packet_bytes(gdbserver, (const uint8 *)data, strlen(data));
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}
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void
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write_binary_packet(WASMGDBServer *gdbserver, const char *pfx,
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const uint8 *data, ssize_t num_bytes)
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{
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uint8 *buf;
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ssize_t pfx_num_chars = strlen(pfx);
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ssize_t buf_num_bytes = 0, total_size;
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int32 i;
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total_size = 2 * num_bytes + pfx_num_chars;
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buf = wasm_runtime_malloc(total_size);
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if (!buf) {
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LOG_ERROR("Failed to allocate memory for binary packet");
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return;
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}
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memset(buf, 0, total_size);
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memcpy(buf, pfx, pfx_num_chars);
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buf_num_bytes += pfx_num_chars;
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for (i = 0; i < num_bytes; ++i) {
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uint8 b = data[i];
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switch (b) {
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case '#':
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case '$':
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case '}':
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case '*':
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buf[buf_num_bytes++] = '}';
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buf[buf_num_bytes++] = b ^ 0x20;
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break;
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default:
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buf[buf_num_bytes++] = b;
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break;
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}
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}
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write_packet_bytes(gdbserver, buf, buf_num_bytes);
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wasm_runtime_free(buf);
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}
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