1/* Copyright (c) 2013-2017 Jeffrey Pfau
 2 *
 3 * This Source Code Form is subject to the terms of the Mozilla Public
 4 * License, v. 2.0. If a copy of the MPL was not distributed with this
 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 6#include <mgba/internal/debugger/symbols.h>
 7
 8#include <mgba-util/string.h>
 9#include <mgba-util/table.h>
10#include <mgba-util/vfs.h>
11
12struct mDebuggerSymbol {
13	int32_t value;
14	int segment;
15};
16
17struct mDebuggerSymbols {
18	struct Table names;
19};
20
21struct mDebuggerSymbols* mDebuggerSymbolTableCreate(void) {
22	struct mDebuggerSymbols* st = malloc(sizeof(*st));
23	HashTableInit(&st->names, 0, free);
24	return st;
25}
26
27void mDebuggerSymbolTableDestroy(struct mDebuggerSymbols* st) {
28	HashTableDeinit(&st->names);
29	free(st);
30}
31
32bool mDebuggerSymbolLookup(const struct mDebuggerSymbols* st, const char* name, int32_t* value, int* segment) {
33	struct mDebuggerSymbol* sym = HashTableLookup(&st->names, name);
34	if (!sym) {
35		return false;
36	}
37	*value = sym->value;
38	*segment = sym->segment;
39	return true;
40}
41
42void mDebuggerSymbolAdd(struct mDebuggerSymbols* st, const char* name, int32_t value, int segment) {
43	struct mDebuggerSymbol* sym = malloc(sizeof(*sym));
44	sym->value = value;
45	sym->segment = segment;
46	HashTableInsert(&st->names, name, sym);
47}
48
49void mDebuggerSymbolRemove(struct mDebuggerSymbols* st, const char* name) {
50	HashTableRemove(&st->names, name);
51}
52
53void mDebuggerLoadARMIPSSymbols(struct mDebuggerSymbols* st, struct VFile* vf) {
54	char line[512];
55
56	while (true) {
57		ssize_t bytesRead = vf->readline(vf, line, sizeof(line));
58		if (bytesRead <= 0) {
59			break;
60		}
61		if (line[bytesRead - 1] == '\n') {
62			line[bytesRead - 1] = '\0';
63		}
64		uint32_t address = 0;
65		const char* buf = line;
66		buf = hex32(buf, &address);
67		if (!buf) {
68			continue;
69		}
70		bytesRead -= 8;
71
72		while (isspace((int) buf[0]) && bytesRead > 0) {
73			--bytesRead;
74			++buf;
75		}
76
77		if (!bytesRead) {
78			continue;
79		}
80
81		if (buf[0] == '.') {
82			// Directives are not handled yet
83			continue;
84		}
85
86		mDebuggerSymbolAdd(st, buf, address, -1);
87	}
88}