asar coverage - build #132


src/asar/
File: src/asar/arch-65816.cpp
Date: 2024-01-22 23:23:03
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1 #include "asar.h"
2 #include "assembleblock.h"
3 #include "asar_math.h"
4
5 #define write1 write1_pick
6
7 2106 void asinit_65816()
8 {
9 2106 }
10
11 1968 void asend_65816()
12 {
13 1968 }
14
15 // like an address mode, but without a specific width
16 enum class addr_kind {
17 abs, // $00
18 x, // $00,x
19 y, // $00,y
20 ind, // ($00)
21 lind, // [$00]
22 xind, // ($00,x)
23 indy, // ($00),y
24 lindy, // [$00],y
25 s, // $00,s
26 sy, // ($00,s),y
27 imp, // implied (no argument)
28 a, // 'A' as argument
29 imm, // #$00
30 };
31
32 5787 struct insn_context {
33 string arg;
34 char orig_insn[3]; // oops i didn't end up using this... could be useful in some error messages maybe
35 char modifier;
36 };
37
38 // checks for matching characters at the start of haystack, ignoring spaces.
39 // returns index into haystack right after the match
40 template<char... chars>
41 58074 int64_t startmatch(const string& haystack) {
42 static const char needle[] = {chars...};
43 29058 size_t haystack_i = 0;
44
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62904 for(size_t i = 0; i < sizeof...(chars); i++) {
45
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58074 while(haystack[haystack_i] == ' ') haystack_i++;
46
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58074 if(needle[i] != to_lower(haystack[haystack_i++])) return -1;
47 }
48 4830 return haystack_i;
49 }
50
51 // checks for matching characters at the end of haystack, ignoring spaces.
52 // returns index into haystack right before the match
53 template<char... chars>
54
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48456 int64_t endmatch(const string& haystack) {
55 static const char needle[] = {chars...};
56 48456 int64_t haystack_i = haystack.length()-1;
57
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62388 for(int64_t i = sizeof...(chars)-1; i >= 0; i--) {
58
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56592 while(haystack_i >= 0 && haystack[haystack_i] == ' ') haystack_i--;
59
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56592 if(haystack_i < 0 || needle[i] != to_lower(haystack[haystack_i--])) return -1;
60 }
61 5796 return haystack_i+1;
62 }
63
64 /*
65 * Parses the address kind from an argument, given a list of allowed address kinds.
66 * Throws "invalid address mode" if the argument does not match any kinds.
67 */
68 // i still don't like this function...
69 template<addr_kind... allowed_kinds>
70
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21690 std::pair<addr_kind, string> parse_addr_kind(insn_context& arg) {
71 10854 int64_t start_i = 0, end_i = arg.arg.length();
72 // If this addressing kind is allowed, return it, along with a trimmed version of the string.
73 #define RETURN_IF_ALLOWED(kind) \
74 if constexpr(((allowed_kinds == addr_kind::kind) || ...)) { \
75 string out(arg.arg.data() + start_i, end_i - start_i); \
76 return std::make_pair(addr_kind::kind, out); \
77 }
78
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21690 if((start_i = startmatch<'#'>(arg.arg)) >= 0) {
79
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5736 RETURN_IF_ALLOWED(imm);
80 asar_throw_error(1, error_type_block, error_id_bad_addr_mode);
81 }
82
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18840 if((start_i = startmatch<'('>(arg.arg)) >= 0) {
83
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1296 if((end_i = endmatch<',', 's', ')', ',', 'y'>(arg.arg)) >= 0) {
84
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576 RETURN_IF_ALLOWED(sy);
85 asar_throw_error(1, error_type_block, error_id_bad_addr_mode);
86 }
87
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1008 if((end_i = endmatch<')', ',', 'y'>(arg.arg)) >= 0) {
88
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576 RETURN_IF_ALLOWED(indy);
89 asar_throw_error(1, error_type_block, error_id_bad_addr_mode);
90 }
91
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720 if((end_i = endmatch<',', 'x', ')'>(arg.arg)) >= 0) {
92
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720 RETURN_IF_ALLOWED(xind);
93 asar_throw_error(1, error_type_block, error_id_bad_addr_mode);
94 }
95
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360 if((end_i = endmatch<')'>(arg.arg)) >= 0) {
96
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738 RETURN_IF_ALLOWED(ind);
97 asar_throw_warning(1, warning_id_assuming_address_mode, "($00)", "$00", " (if this was intentional, add a +0 after the parentheses.)");
98 }
99 }
100
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17544 if((start_i = startmatch<'['>(arg.arg)) >= 0) {
101
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684 if((end_i = endmatch<']', ',', 'y'>(arg.arg)) >= 0) {
102
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576 RETURN_IF_ALLOWED(lindy);
103 asar_throw_error(1, error_type_block, error_id_bad_addr_mode);
104 }
105
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396 if((end_i = endmatch<']'>(arg.arg)) >= 0) {
106
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792 RETURN_IF_ALLOWED(lind);
107 asar_throw_error(1, error_type_block, error_id_bad_addr_mode);
108 }
109 }
110 8436 start_i = 0;
111
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16860 if((end_i = endmatch<',', 'x'>(arg.arg)) >= 0) {
112
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6120 RETURN_IF_ALLOWED(x);
113 asar_throw_error(1, error_type_block, error_id_bad_addr_mode);
114 }
115
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13800 if((end_i = endmatch<',', 'y'>(arg.arg)) >= 0) {
116
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936 RETURN_IF_ALLOWED(y);
117 asar_throw_error(1, error_type_block, error_id_bad_addr_mode);
118 }
119
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13332 if((end_i = endmatch<',', 's'>(arg.arg)) >= 0) {
120
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576 RETURN_IF_ALLOWED(s);
121 asar_throw_error(1, error_type_block, error_id_bad_addr_mode);
122 }
123 // hoping that by now, something would have stripped whitespace lol
124
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13044 if(arg.arg.length() == 0) {
125
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11736 RETURN_IF_ALLOWED(imp);
126 asar_throw_error(1, error_type_block, error_id_bad_addr_mode);
127 }
128
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7176 if(arg.arg == "a" || arg.arg == "A") {
129
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432 RETURN_IF_ALLOWED(a);
130 // todo: some hint for "don't name your label "a" "?
131 36 asar_throw_error(1, error_type_block, error_id_bad_addr_mode);
132 }
133 if constexpr(((allowed_kinds == addr_kind::abs) || ...)) {
134
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7476 return std::make_pair(addr_kind::abs, arg.arg);
135 }
136 asar_throw_error(1, error_type_block, error_id_bad_addr_mode);
137 #undef RETURN_IF_ALLOWED
138 // clang doesn't know that asar_throw_error is noreturn in this case... :(
139 // we don't really have anything good to return either tho
140 __builtin_unreachable();
141 }
142
143 const char* format_valid_widths(int min, int max) {
144 if(min == 1) {
145 if(max == 1) return "only 8-bit";
146 if(max == 2) return "only 8-bit or 16-bit";
147 if(max == 3) return "any width"; // shouldn't actually happen lol
148 } else if(min == 2) {
149 if(max == 2) return "only 16-bit";
150 if(max == 3) return "only 16-bit or 24-bit";
151 } else if(min == 3) {
152 return "only 24-bit";
153 }
154 return "???";
155 }
156
157 7305 int get_real_len(int min_len, int max_len, char modifier, int arg_min_len) {
158
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7305 if(modifier != 0) {
159 2340 int given_len = getlenfromchar(modifier);
160
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2322 if(given_len < min_len || given_len > max_len)
161 asar_throw_error(2, error_type_block, error_id_bad_access_width, format_valid_widths(min_len, max_len), given_len*8);
162 2322 return given_len;
163 } else {
164
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4965 if(arg_min_len > max_len) {
165 asar_throw_error(2, error_type_block, error_id_bad_access_width, format_valid_widths(min_len, max_len), arg_min_len*8);
166 }
167 // todo warn about widening when dpbase != 0
168 4965 return std::max(arg_min_len, min_len);
169 }
170 }
171
172 1113 void check_implicit_immediate(char modifier, const string& target) {
173
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1113 if(modifier != 0) return;
174
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573 if(is_hex_constant(target.data())) return;
175 87 asar_throw_warning(2, warning_id_implicitly_sized_immediate);
176 }
177
178 template<int base, bool allow_imm = true>
179 9006 void the8(insn_context& arg) {
180 using K = addr_kind;
181
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9006 auto parse_result = parse_addr_kind<K::xind, K::s, K::abs, K::lind, K::imm, K::indy, K::ind, K::sy, K::x, K::y, K::lindy>(arg);
182 9006 addr_kind kind = parse_result.first;
183 4506 int min_len = 0, max_len = 4;
184
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9006 int64_t the_num = pass == 2 ? getnum(parse_result.second) : 0;
185
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8982 int arg_min_len = getlen(parse_result.second, kind == K::imm);
186
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8982 if(kind == K::xind || kind == K::s || kind == K::sy || kind == K::indy || kind == K::ind || kind == K::lind || kind == K::lindy) min_len = max_len = 1;
187
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3486 else if(kind == K::abs) min_len = 1, max_len = 3;
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1764 else if(kind == K::x) min_len = 1, max_len = 3;
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900 else if(kind == K::y) min_len = max_len = 2;
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756 else if(kind == K::imm) min_len = 1, max_len = 2;
191
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8982 if(kind == K::imm) check_implicit_immediate(arg.modifier, parse_result.second);
192
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8982 int real_len = get_real_len(min_len, max_len, arg.modifier, arg_min_len);
193 4476 int opcode_offset = 0;
194
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8946 if(real_len == 1) {
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3930 if(kind == K::xind) opcode_offset = 0x1;
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3786 if(kind == K::s) opcode_offset = 0x3;
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3786 if(kind == K::abs) opcode_offset = 0x5;
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3570 if(kind == K::lind) opcode_offset = 0x7;
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3786 if(kind == K::imm) opcode_offset = 0x9;
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3624 if(kind == K::indy) opcode_offset = 0x11;
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3786 if(kind == K::ind) opcode_offset = 0x12;
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3786 if(kind == K::sy) opcode_offset = 0x13;
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3786 if(kind == K::x) opcode_offset = 0x15;
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3642 if(kind == K::lindy) opcode_offset = 0x17;
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5016 } else if(real_len == 2) {
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3204 if(kind == K::imm) opcode_offset = 0x9;
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2778 if(kind == K::abs) opcode_offset = 0xd;
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2460 if(kind == K::y) opcode_offset = 0x19;
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3060 if(kind == K::x) opcode_offset = 0x1d;
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1812 } else if(real_len == 3) {
211
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1812 if(kind == K::abs) opcode_offset = 0xf;
212
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1194 if(kind == K::x) opcode_offset = 0x1f;
213 }
214
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8946 write1(opcode_offset + base);
215
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8946 if(real_len == 1) write1(the_num);
216
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5016 else if(real_len == 2) write2(the_num);
217
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1812 else if(real_len == 3) write3(the_num);
218 8976 }
219
220 template<int base, int accum_opc, bool is_bit = false>
221 2448 void thenext8(insn_context& arg) {
222 using K = addr_kind;
223 addr_kind kind;
224 1224 string parsed_str;
225 if constexpr(is_bit) {
226
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432 auto parse_result = parse_addr_kind<K::x, K::abs, K::imm>(arg);
227 432 kind = parse_result.first;
228
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216 parsed_str = parse_result.second;
229 216 } else {
230
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2016 auto parse_result = parse_addr_kind<K::x, K::abs, K::imm, K::a, K::imp>(arg);
231 2016 kind = parse_result.first;
232
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1008 parsed_str = parse_result.second;
233 // todo: some checks on arg.modifier here
234
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2016 if(kind == K::imm) {
235 // implied rep
236
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72 int64_t rep_count = getnum(parsed_str);
237
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72 if(foundlabel) asar_throw_error(0, error_type_block, error_id_no_labels_here);
238
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252 for (int64_t i=0;i<rep_count;i++) { write1(accum_opc); }
239 36 return;
240 }
241
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1944 if(kind == K::a || kind == K::imp) {
242
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216 write1(accum_opc);
243 108 return;
244 }
245
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1008 }
246
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2160 int64_t the_num = pass == 2 ? getnum(parsed_str) : 0;
247
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2160 int arg_min_len = getlen(parsed_str, kind == K::imm);
248
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2160 int real_len = get_real_len(1, 2, arg.modifier, arg_min_len);
249 1080 int opcode = 0;
250
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1296 if(kind == K::imm) {
251
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144 check_implicit_immediate(arg.modifier, parsed_str);
252 72 opcode = accum_opc;
253
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2016 } else if(real_len == 1) {
254
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1008 if(kind == K::abs) opcode = base+0x6;
255
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756 if(kind == K::x) opcode = base+0x16;
256
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1008 } else if(real_len == 2) {
257
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1008 if(kind == K::abs) opcode = base+0xe;
258
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756 if(kind == K::x) opcode = base+0x1e;
259 }
260
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2160 write1(opcode);
261
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2160 if(real_len == 1) write1(the_num);
262
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1080 else if(real_len == 2) write2(the_num);
263
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2448 }
264
265 template<int base>
266 288 void tsb_trb(insn_context& arg) {
267 using K = addr_kind;
268
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288 auto parse_result = parse_addr_kind<K::abs>(arg);
269
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288 int64_t the_num = pass == 2 ? getnum(parse_result.second) : 0;
270
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288 int arg_min_len = getlen(parse_result.second, false);
271
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288 int real_len = get_real_len(1, 2, arg.modifier, arg_min_len);
272
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288 int opcode_offset = real_len == 1 ? 0x04 : 0x0c;
273
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288 write1(opcode_offset + base);
274
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288 if(real_len == 1) write1(the_num);
275
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144 else if(real_len == 2) write2(the_num);
276 288 }
277
278 template<int opc, int width = 1>
279 432 void branch(insn_context& arg) {
280 using K = addr_kind;
281
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432 auto parse_result = parse_addr_kind<K::abs>(arg);
282 198 int64_t num = 0;
283
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396 if(pass == 2) {
284
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132 num = getnum(parse_result.second);
285
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132 if(foundlabel) {
286 120 int64_t delta = num - (snespos + width + 1);
287
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120 if((num & ~0xffff) != (snespos & ~0xffff)) {
288 // todo: should throw error "can't branch to different bank"
289 asar_throw_error(2, error_type_block, error_id_relative_branch_out_of_bounds, dec(delta).data());
290 }
291
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108 if(width==1 && (delta < -128 || delta > 127)) {
292 asar_throw_error(2, error_type_block, error_id_relative_branch_out_of_bounds, dec(delta).data());
293 }
294 60 num = delta;
295 } else {
296
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12 if(num & ~(width==2 ? 0xffff : 0xff)) {
297 asar_throw_error(2, error_type_block, error_id_relative_branch_out_of_bounds, dec(num).data());
298 }
299 12 num = (int16_t)(width==2 ? num : (int8_t)num);
300 }
301 }
302
303
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396 write1(opc);
304
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324 if(width == 1) write1(num);
305
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72 else if(width == 2) write2(num);
306 396 }
307
308 template<int opc>
309 1404 void implied(insn_context& arg) {
310
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1404 if(arg.arg != "") {
311 // todo: some kind of "this instruction doesn't take an argument" message?
312 asar_throw_error(0, error_type_block, error_id_bad_addr_mode);
313 }
314 1404 write1(opc);
315 1404 }
316
317 template<int opc>
318 6120 void implied_rep(insn_context& arg) {
319 using K = addr_kind;
320
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6120 auto parse_result = parse_addr_kind<K::imm, K::imp>(arg);
321
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6120 if(parse_result.first == K::imp) {
322
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5760 write1(opc);
323 } else {
324
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360 int64_t rep_count = getnum(parse_result.second);
325
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360 if(foundlabel) asar_throw_error(0, error_type_block, error_id_no_labels_here);
326
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1188 for (int64_t i=0;i<rep_count;i++) { write1(opc); }
327 }
328 6120 }
329
330 template<int base, char op, char xy>
331 1800 void xy_ops(insn_context& arg) {
332 using K = addr_kind;
333 900 std::pair<addr_kind, string> parse_result;
334 if(op == 'S') { // stx
335
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360 parse_result = parse_addr_kind<K::abs, (xy == 'X' ? K::y : K::x)>(arg);
336 } else if(op == 'L') { // ldx
337
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864 parse_result = parse_addr_kind<K::abs, K::imm, (xy == 'X' ? K::y : K::x)>(arg);
338 } else { // cpx
339
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576 parse_result = parse_addr_kind<K::abs, K::imm>(arg);
340 }
341
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1800 int64_t the_num = pass == 2 ? getnum(parse_result.second) : 0;
342
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1800 int arg_min_len = getlen(parse_result.second, false);
343
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1800 int real_len = get_real_len(1, 2, arg.modifier, arg_min_len);
344 900 int opcode = 0;
345
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1800 if(parse_result.first == K::imm) {
346
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576 check_implicit_immediate(arg.modifier, parse_result.second);
347 288 opcode = base;
348
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1224 } else if(parse_result.first == K::abs) {
349
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864 if(real_len == 1) opcode = base + 0x4;
350 216 else opcode = base + 0xc;
351 } else { // ,x or ,y
352
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360 if(real_len == 1) opcode = base + 0x14;
353 72 else opcode = base + 0x1c;
354 }
355
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1800 write1(opcode);
356
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1800 if(real_len == 1) write1(the_num);
357
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864 else if(real_len == 2) write2(the_num);
358 1800 }
359
360 template<int opc>
361 216 void interrupt(insn_context& arg) {
362 using K = addr_kind;
363
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216 auto parse_result = parse_addr_kind<K::imm, K::imp>(arg);
364
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216 if(parse_result.first == K::imp) {
365
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108 write1(opc);
366
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108 write1(0);
367 } else {
368
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108 int64_t num = pass == 2 ? getnum(parse_result.second) : 0;
369 // this is kinda hacky
370
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72 if(num < 0 || num > 255) asar_throw_error(2, error_type_block, error_id_bad_access_width, format_valid_widths(1, 1), num > 65535 ? 24 : 16);
371
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108 write1(opc);
372
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108 write1(num);
373 }
374 216 }
375
376 template<int opc, addr_kind k, int width>
377 504 void oneoff(insn_context& arg) {
378
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504 auto parse_result = parse_addr_kind<k>(arg);
379
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504 int64_t the_num = pass == 2 ? getnum(parse_result.second) : 0;
380
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504 int arg_min_len = getlen(parse_result.second, false);
381 // only for error checking, we know the answer anyways
382
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504 get_real_len(width, width, arg.modifier, arg_min_len);
383
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504 write1(opc);
384
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108 if(width == 1) write1(the_num);
385
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36 else if(width == 2) write2(the_num);
386
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360 else if(width == 3) write3(the_num);
387 504 }
388
389 144 void stz(insn_context& arg) {
390 using K = addr_kind;
391
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144 auto parse_result = parse_addr_kind<K::abs, K::x>(arg);
392
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144 int64_t the_num = pass == 2 ? getnum(parse_result.second) : 0;
393
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144 int arg_min_len = getlen(parse_result.second, false);
394
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144 int real_len = get_real_len(1, 2, arg.modifier, arg_min_len);
395
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144 if(real_len == 1) {
396
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72 if(parse_result.first == K::abs) write1(0x64);
397
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36 else if(parse_result.first == K::x) write1(0x74);
398
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72 write1(the_num);
399 } else {
400
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72 if(parse_result.first == K::abs) write1(0x9c);
401
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36 else if(parse_result.first == K::x) write1(0x9e);
402
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72 write2(the_num);
403 }
404 144 }
405
406 template<char which>
407 588 void jmp_jsr_jml(insn_context& arg) {
408 using K = addr_kind;
409
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588 auto parse_result = which == 'R' ? parse_addr_kind<K::abs, K::xind>(arg)
410 : which == 'P' ? parse_addr_kind<K::abs, K::xind, K::ind, K::lind>(arg)
411 : /* 'L' */ parse_addr_kind<K::abs, K::lind>(arg);
412
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588 int64_t the_num = pass == 2 ? getnum(parse_result.second) : 0;
413 // set optimizeforbank to -1 (i.e. auto, assume DBR = current bank)
414 // because jmp and jsr's arguments are relative to the program bank anyways
415 588 int old_optimize = optimizeforbank;
416
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588 if(parse_result.first == K::lind || parse_result.first == K::ind) {
417 // these ones for Some Reason always read the pointer from bank 0 lol
418 144 optimizeforbank = 0;
419 } else {
420 // the rest use bank K
421 444 optimizeforbank = -1;
422 }
423
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588 int arg_min_len = getlen(parse_result.second, false);
424 588 optimizeforbank = old_optimize;
425
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606 get_real_len(2, (which == 'L' && parse_result.first == K::abs) ? 3 : 2, arg.modifier, arg_min_len);
426 if(which == 'R') {
427
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288 if(parse_result.first == K::abs) write1(0x20);
428
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36 else if(parse_result.first == K::xind) write1(0xfc);
429 } else if(which == 'L') {
430
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108 if(parse_result.first == K::abs) {
431
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72 write1(0x5c);
432
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72 write3(the_num);
433 36 return;
434
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36 } else if(parse_result.first == K::lind) {
435
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36 write1(0xdc);
436 }
437 } else {
438
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192 if(parse_result.first == K::abs) write1(0x4c);
439
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144 else if(parse_result.first == K::ind) write1(0x6c);
440
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108 else if(parse_result.first == K::xind) write1(0x7c);
441
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72 else if(parse_result.first == K::lind) write1(0xdc);
442 }
443
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516 write2(the_num);
444
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300 }
445
446 template<int opc>
447 72 void mvn_mvp(insn_context& arg) {
448 int count;
449
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72 autoptr<char**> parts = qpsplit(arg.arg.raw(), ',', &count);
450
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72 if(count != 2) asar_throw_error(2, error_type_block, error_id_bad_addr_mode);
451 // todo length checks ???
452
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72 write1(opc);
453
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72 if(pass == 2) {
454
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24 write1(getnum(parts[0]));
455
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24 write1(getnum(parts[1]));
456 } else {
457
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48 write2(0);
458 }
459 72 }
460
461 assocarr<void(*)(insn_context&)> mnemonics = {
462 { "ora", the8<0x00> },
463 { "and", the8<0x20> },
464 { "eor", the8<0x40> },
465 { "adc", the8<0x60> },
466 { "sta", the8<0x80, false> },
467 { "lda", the8<0xa0> },
468 { "cmp", the8<0xc0> },
469 { "sbc", the8<0xe0> },
470 { "asl", thenext8<0x00, 0x0a> },
471 { "bit", thenext8<0x1e, 0x89, true> },
472 { "rol", thenext8<0x20, 0x2a> },
473 { "lsr", thenext8<0x40, 0x4a> },
474 { "ror", thenext8<0x60, 0x6a> },
475 { "dec", thenext8<0xc0, 0x3a> },
476 { "inc", thenext8<0xe0, 0x1a> },
477 { "bcc", branch<0x90> },
478 { "bcs", branch<0xb0> },
479 { "beq", branch<0xf0> },
480 { "bmi", branch<0x30> },
481 { "bne", branch<0xd0> },
482 { "bpl", branch<0x10> },
483 { "bra", branch<0x80> },
484 { "bvc", branch<0x50> },
485 { "bvs", branch<0x70> },
486 { "brl", branch<0x82, 2> },
487 { "clc", implied<0x18> },
488 { "cld", implied<0xd8> },
489 { "cli", implied<0x58> },
490 { "clv", implied<0xb8> },
491 { "dex", implied_rep<0xca> },
492 { "dey", implied_rep<0x88> },
493 { "inx", implied_rep<0xe8> },
494 { "iny", implied_rep<0xc8> },
495 { "nop", implied_rep<0xea> },
496 { "pha", implied<0x48> },
497 { "phb", implied<0x8b> },
498 { "phd", implied<0x0b> },
499 { "phk", implied<0x4b> },
500 { "php", implied<0x08> },
501 { "phx", implied<0xda> },
502 { "phy", implied<0x5a> },
503 { "pla", implied<0x68> },
504 { "plb", implied<0xab> },
505 { "pld", implied<0x2b> },
506 { "plp", implied<0x28> },
507 { "plx", implied<0xfa> },
508 { "ply", implied<0x7a> },
509 { "rti", implied<0x40> },
510 { "rtl", implied<0x6b> },
511 { "rts", implied<0x60> },
512 { "sec", implied<0x38> },
513 { "sed", implied<0xf8> },
514 { "sei", implied<0x78> },
515 { "stp", implied<0xdb> },
516 { "tax", implied<0xaa> },
517 { "tay", implied<0xa8> },
518 { "tcd", implied<0x5b> },
519 { "tcs", implied<0x1b> },
520 { "tdc", implied<0x7b> },
521 { "tsc", implied<0x3b> },
522 { "tsx", implied<0xba> },
523 { "txa", implied<0x8a> },
524 { "txs", implied<0x9a> },
525 { "txy", implied<0x9b> },
526 { "tya", implied<0x98> },
527 { "tyx", implied<0xbb> },
528 { "wai", implied<0xcb> },
529 { "xba", implied<0xeb> },
530 { "xce", implied<0xfb> },
531 { "ldy", xy_ops<0xa0, 'L', 'Y'> },
532 { "ldx", xy_ops<0xa2, 'L', 'X'> },
533 { "cpy", xy_ops<0xc0, 'C', 'Y'> },
534 { "cpx", xy_ops<0xe0, 'C', 'X'> },
535 { "stx", xy_ops<0x82, 'S', 'X'> },
536 { "sty", xy_ops<0x80, 'S', 'Y'> },
537 { "cop", interrupt<0x02> },
538 { "wdm", interrupt<0x42> },
539 { "brk", interrupt<0x00> },
540 { "tsb", tsb_trb<0x00> },
541 { "trb", tsb_trb<0x10> },
542 { "rep", oneoff<0xc2, addr_kind::imm, 1> },
543 { "sep", oneoff<0xe2, addr_kind::imm, 1> },
544 { "pei", oneoff<0xd4, addr_kind::ind, 1> },
545 { "pea", oneoff<0xf4, addr_kind::abs, 2> },
546 { "mvn", mvn_mvp<0x54> },
547 { "mvp", mvn_mvp<0x44> },
548 { "jsl", oneoff<0x22, addr_kind::abs, 3> },
549 { "per", branch<0x62, 2> },
550 { "stz", stz },
551 { "jmp", jmp_jsr_jml<'P'> },
552 { "jsr", jmp_jsr_jml<'R'> },
553 { "jml", jmp_jsr_jml<'L'> },
554 };
555
556
557 67332 bool asblock_65816(char** word, int numwords)
558 {
559 #define is(test) (!stricmpwithupper(word[0], test))
560
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67332 if(word[0][0] == '\'') return false;
561 29883 string par;
562
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127089 for(int i = 1; i < numwords; i++){
563
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60963 if(i > 1) par += " ";
564
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60963 par += word[i];
565 }
566 // todo handle code like `nop = $1234`
567
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66126 string opc = word[0];
568
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441318 for(int i = 0; i < opc.length(); i++) opc.raw()[i] = to_lower(opc[i]);
569 29883 char mod = 0;
570
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66126 if(opc.length() >= 2 && opc[opc.length()-2] == '.') {
571
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2340 mod = opc[opc.length()-1];
572
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2340 opc.truncate(opc.length()-2);
573 }
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66126 if(!mnemonics.exists(opc.data())) return false;
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11583 insn_context ctx{par, {}, mod};
576 11583 ctx.orig_insn[0] = opc[0];
577 11583 ctx.orig_insn[1] = opc[1];
578 11583 ctx.orig_insn[2] = opc[2];
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11583 mnemonics.find(opc.data())(ctx);
580 5772 return true;
581 66198 }
582