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#include "asar.h" |
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#include "assembleblock.h" |
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#include "asar_math.h" |
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#define write1 write1_pick |
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2181 |
void asinit_65816() |
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{ |
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} |
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2043 |
void asend_65816() |
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{ |
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2043 |
} |
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// like an address mode, but without a specific width |
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enum class addr_kind { |
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abs, // $00 |
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x, // $00,x |
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y, // $00,y |
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ind, // ($00) |
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lind, // [$00] |
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xind, // ($00,x) |
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indy, // ($00),y |
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lindy, // [$00],y |
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s, // $00,s |
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sy, // ($00,s),y |
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imp, // implied (no argument) |
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a, // 'A' as argument |
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imm, // #$00 |
| 30 |
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}; |
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| 32 |
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struct insn_context { |
| 33 |
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string arg; |
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char orig_insn[3]; // oops i didn't end up using this... could be useful in some error messages maybe |
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char modifier; |
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// right now these 2 are only used for autoclean, so not set for some weird opcodes |
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string parsed_arg; |
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int written_len; |
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uint8_t written_opcode; |
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}; |
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6687 |
struct parse_result { |
| 43 |
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addr_kind kind; |
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string arg; |
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}; |
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// checks for matching characters at the start of haystack, ignoring spaces. |
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// returns index into haystack right after the match |
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template<char... chars> |
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60666 |
int64_t startmatch(const string& haystack) { |
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static const char needle[] = {chars...}; |
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size_t haystack_i = 0; |
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for(size_t i = 0; i < sizeof...(chars); i++) { |
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while(haystack[haystack_i] == ' ') haystack_i++; |
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if(needle[i] != to_lower(haystack[haystack_i++])) return -1; |
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} |
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return haystack_i; |
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} |
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// checks for matching characters at the end of haystack, ignoring spaces. |
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// returns index into haystack right before the match |
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template<char... chars> |
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int64_t endmatch(const string& haystack) { |
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static const char needle[] = {chars...}; |
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int64_t haystack_i = haystack.length()-1; |
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for(int64_t i = sizeof...(chars)-1; i >= 0; i--) { |
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while(haystack_i >= 0 && haystack[haystack_i] == ' ') haystack_i--; |
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if(haystack_i < 0 || needle[i] != to_lower(haystack[haystack_i--])) return -1; |
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} |
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return haystack_i+1; |
| 71 |
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} |
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/* |
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* Parses the address kind from an argument, given a list of allowed address kinds. |
| 75 |
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* Throws "invalid address mode" if the argument does not match any kinds. |
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*/ |
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// i still don't like this function... |
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template<addr_kind... allowed_kinds> |
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parse_result parse_addr_kind(insn_context& ctx) { |
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int64_t start_i = 0, end_i = ctx.arg.length(); |
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// If this addressing kind is allowed, return it, along with a trimmed version of the string. |
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#define RETURN_IF_ALLOWED(kind) \ |
| 83 |
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if constexpr(((allowed_kinds == addr_kind::kind) || ...)) { \ |
| 84 |
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string out(ctx.arg.data() + start_i, end_i - start_i); \ |
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ctx.parsed_arg = out; \ |
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return parse_result{addr_kind::kind, out}; \ |
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} |
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if((start_i = startmatch<'#'>(ctx.arg)) >= 0) { |
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RETURN_IF_ALLOWED(imm); |
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✗ |
asar_throw_error(1, error_type_block, error_id_bad_addr_mode); |
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} |
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if((start_i = startmatch<'('>(ctx.arg)) >= 0) { |
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if((end_i = endmatch<',', 's', ')', ',', 'y'>(ctx.arg)) >= 0) { |
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RETURN_IF_ALLOWED(sy); |
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✗ |
asar_throw_error(1, error_type_block, error_id_bad_addr_mode); |
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} |
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if((end_i = endmatch<')', ',', 'y'>(ctx.arg)) >= 0) { |
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RETURN_IF_ALLOWED(indy); |
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✗ |
asar_throw_error(1, error_type_block, error_id_bad_addr_mode); |
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} |
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if((end_i = endmatch<',', 'x', ')'>(ctx.arg)) >= 0) { |
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RETURN_IF_ALLOWED(xind); |
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✗ |
asar_throw_error(1, error_type_block, error_id_bad_addr_mode); |
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} |
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if((end_i = endmatch<')'>(ctx.arg)) >= 0) { |
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RETURN_IF_ALLOWED(ind); |
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✗ |
asar_throw_warning(1, warning_id_assuming_address_mode, "($00)", "$00", " (if this was intentional, add a +0 after the parentheses.)"); |
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} |
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} |
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if((start_i = startmatch<'['>(ctx.arg)) >= 0) { |
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if((end_i = endmatch<']', ',', 'y'>(ctx.arg)) >= 0) { |
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RETURN_IF_ALLOWED(lindy); |
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asar_throw_error(1, error_type_block, error_id_bad_addr_mode); |
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} |
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if((end_i = endmatch<']'>(ctx.arg)) >= 0) { |
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RETURN_IF_ALLOWED(lind); |
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asar_throw_error(1, error_type_block, error_id_bad_addr_mode); |
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} |
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} |
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start_i = 0; |
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if((end_i = endmatch<',', 'x'>(ctx.arg)) >= 0) { |
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RETURN_IF_ALLOWED(x); |
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✗ |
asar_throw_error(1, error_type_block, error_id_bad_addr_mode); |
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} |
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if((end_i = endmatch<',', 'y'>(ctx.arg)) >= 0) { |
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RETURN_IF_ALLOWED(y); |
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asar_throw_error(1, error_type_block, error_id_bad_addr_mode); |
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} |
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if((end_i = endmatch<',', 's'>(ctx.arg)) >= 0) { |
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576 |
RETURN_IF_ALLOWED(s); |
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✗ |
asar_throw_error(1, error_type_block, error_id_bad_addr_mode); |
| 132 |
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} |
| 133 |
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end_i = ctx.arg.length(); |
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// hoping that by now, something would have stripped whitespace lol |
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if(ctx.arg.length() == 0) { |
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RETURN_IF_ALLOWED(imp); |
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✗ |
asar_throw_error(1, error_type_block, error_id_bad_addr_mode); |
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} |
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if(ctx.arg == "a" || ctx.arg == "A") { |
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RETURN_IF_ALLOWED(a); |
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// todo: some hint for "don't name your label "a" "? |
| 142 |
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36 |
asar_throw_error(1, error_type_block, error_id_bad_addr_mode); |
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} |
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RETURN_IF_ALLOWED(abs); |
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asar_throw_error(1, error_type_block, error_id_bad_addr_mode); |
| 146 |
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#undef RETURN_IF_ALLOWED |
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} |
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✗ |
const char* format_valid_widths(int min, int max) { |
| 150 |
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✗ |
if(min == 1) { |
| 151 |
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✗ |
if(max == 1) return "only 8-bit"; |
| 152 |
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✗ |
if(max == 2) return "only 8-bit or 16-bit"; |
| 153 |
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✗ |
if(max == 3) return "any width"; // shouldn't actually happen lol |
| 154 |
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✗ |
} else if(min == 2) { |
| 155 |
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✗ |
if(max == 2) return "only 16-bit"; |
| 156 |
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✗ |
if(max == 3) return "only 16-bit or 24-bit"; |
| 157 |
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✗ |
} else if(min == 3) { |
| 158 |
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✗ |
return "only 24-bit"; |
| 159 |
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} |
| 160 |
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✗ |
return "???"; |
| 161 |
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} |
| 162 |
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| 163 |
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7737 |
int get_real_len(int min_len, int max_len, insn_context& ctx, const parse_result& parsed) { |
| 164 |
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// we can theoretically give min_len to getlen now :o |
| 165 |
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int arg_min_len = getlen(parsed.arg, parsed.kind == addr_kind::imm); |
| 166 |
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int out_len; |
| 167 |
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if(ctx.modifier != 0) { |
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out_len = getlenfromchar(ctx.modifier); |
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if(out_len < min_len || out_len > max_len) |
| 170 |
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✗ |
asar_throw_error(2, error_type_block, error_id_bad_access_width, format_valid_widths(min_len, max_len), out_len*8); |
| 171 |
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} else { |
| 172 |
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if(parsed.kind == addr_kind::imm) { |
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if(!is_hex_constant(parsed.arg.data())) |
| 174 |
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asar_throw_warning(2, warning_id_implicitly_sized_immediate); |
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if(arg_min_len == 3 && max_len == 2) { |
| 176 |
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// lda #label |
| 177 |
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// todo: throw pedantic warning |
| 178 |
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✗ |
ctx.written_len = max_len; |
| 179 |
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✗ |
return max_len; |
| 180 |
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} |
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} |
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if(arg_min_len > max_len) { |
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asar_throw_error(2, error_type_block, error_id_bad_access_width, format_valid_widths(min_len, max_len), arg_min_len*8); |
| 184 |
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} |
| 185 |
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// todo warn about widening when dpbase != 0 |
| 186 |
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5397 |
out_len = std::max(arg_min_len, min_len); |
| 187 |
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} |
| 188 |
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7719 |
ctx.written_len = out_len; |
| 189 |
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7719 |
return out_len; |
| 190 |
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} |
| 191 |
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| 192 |
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216 |
void handle_implicit_rep(string& arg, int opcode) { |
| 193 |
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216 |
int64_t rep_count = getnum(arg); |
| 194 |
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if(foundlabel) asar_throw_error(0, error_type_block, error_id_no_labels_here); |
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720 |
for (int64_t i=0;i<rep_count;i++) { write1(opcode); } |
| 196 |
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216 |
} |
| 197 |
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| 198 |
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5916 |
void opcode0(insn_context& ctx, uint8_t opcode) { |
| 199 |
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ctx.written_opcode = opcode; |
| 200 |
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7815 |
write1(opcode); |
| 201 |
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7428 |
} |
| 202 |
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3441 |
void opcode1(insn_context& ctx, uint8_t opcode, int num) { |
| 203 |
|
1722 |
opcode0(ctx, opcode); |
| 204 |
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3441 |
write1(num); |
| 205 |
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3441 |
} |
| 206 |
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3054 |
void opcode2(insn_context& ctx, uint8_t opcode, int num) { |
| 207 |
|
1530 |
opcode0(ctx, opcode); |
| 208 |
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3054 |
write2(num); |
| 209 |
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3054 |
} |
| 210 |
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1530 |
void opcode3(insn_context& ctx, uint8_t opcode, int num) { |
| 211 |
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765 |
opcode0(ctx, opcode); |
| 212 |
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1530 |
write3(num); |
| 213 |
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1530 |
} |
| 214 |
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| 215 |
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template<int base, bool allow_imm = true> |
| 216 |
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9150 |
void the8(insn_context& ctx) { |
| 217 |
|
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using K = addr_kind; |
| 218 |
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auto parsed = 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>(ctx); |
| 219 |
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9150 |
addr_kind kind = parsed.kind; |
| 220 |
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int min_len = 0, max_len = 4; |
| 221 |
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|
9150 |
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; |
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|
3570 |
else if(kind == K::abs) min_len = 1, max_len = 3; |
| 223 |
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|
1806 |
else if(kind == K::x) min_len = 1, max_len = 3; |
| 224 |
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|
906 |
else if(kind == K::y) min_len = max_len = 2; |
| 225 |
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|
762 |
else if(kind == K::imm) min_len = 1, max_len = 2; |
| 226 |
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|
9150 |
int64_t the_num = pass == 2 ? getnum(parsed.arg) : 0; |
| 227 |
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|
9126 |
int real_len = get_real_len(min_len, max_len, ctx, parsed); |
| 228 |
|
4548 |
int opcode_offset = 0; |
| 229 |
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|
9090 |
if(real_len == 1) { |
| 230 |
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|
3930 |
if(kind == K::xind) opcode_offset = 0x1; |
| 231 |
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|
3786 |
if(kind == K::s) opcode_offset = 0x3; |
| 232 |
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|
3786 |
if(kind == K::abs) opcode_offset = 0x5; |
| 233 |
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|
3570 |
if(kind == K::lind) opcode_offset = 0x7; |
| 234 |
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|
3786 |
if(kind == K::imm) opcode_offset = 0x9; |
| 235 |
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|
3624 |
if(kind == K::indy) opcode_offset = 0x11; |
| 236 |
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if(kind == K::ind) opcode_offset = 0x12; |
| 237 |
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|
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if(kind == K::sy) opcode_offset = 0x13; |
| 238 |
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|
3786 |
if(kind == K::x) opcode_offset = 0x15; |
| 239 |
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|
3642 |
if(kind == K::lindy) opcode_offset = 0x17; |
| 240 |
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|
3930 |
opcode1(ctx, base + opcode_offset, the_num); |
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|
5160 |
} else if(real_len == 2) { |
| 242 |
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|
3252 |
if(kind == K::imm) opcode_offset = 0x9; |
| 243 |
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|
2826 |
if(kind == K::abs) opcode_offset = 0xd; |
| 244 |
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|
2496 |
if(kind == K::y) opcode_offset = 0x19; |
| 245 |
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|
3108 |
if(kind == K::x) opcode_offset = 0x1d; |
| 246 |
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|
3252 |
opcode2(ctx, base + opcode_offset, the_num); |
| 247 |
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|
1908 |
} else if(real_len == 3) { |
| 248 |
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|
1908 |
if(kind == K::abs) opcode_offset = 0xf; |
| 249 |
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|
1266 |
if(kind == K::x) opcode_offset = 0x1f; |
| 250 |
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|
1908 |
opcode3(ctx, base + opcode_offset, the_num); |
| 251 |
|
|
} |
| 252 |
|
9120 |
} |
| 253 |
|
|
|
| 254 |
|
|
template<int base, int accum_opc, bool is_bit = false> |
| 255 |
|
2448 |
void thenext8(insn_context& ctx) { |
| 256 |
|
|
using K = addr_kind; |
| 257 |
|
1224 |
parse_result parsed; |
| 258 |
|
|
if constexpr(is_bit) { |
| 259 |
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432 |
parsed = parse_addr_kind<K::x, K::abs, K::imm>(ctx); |
| 260 |
|
|
} else { |
| 261 |
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|
2016 |
parsed = parse_addr_kind<K::x, K::abs, K::imm, K::a, K::imp>(ctx); |
| 262 |
|
|
// todo: some checks on ctx.modifier here |
| 263 |
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|
2016 |
if(parsed.kind == K::imm) return handle_implicit_rep(parsed.arg, accum_opc); |
| 264 |
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|
1944 |
if(parsed.kind == K::a || parsed.kind == K::imp) { |
| 265 |
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|
108 |
opcode0(ctx, accum_opc); |
| 266 |
|
108 |
return; |
| 267 |
|
|
} |
| 268 |
|
|
} |
| 269 |
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|
2160 |
int64_t the_num = pass == 2 ? getnum(parsed.arg) : 0; |
| 270 |
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|
2160 |
int real_len = get_real_len(1, 2, ctx, parsed); |
| 271 |
|
1080 |
int opcode = 0; |
| 272 |
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|
2160 |
if(parsed.kind == K::imm) { |
| 273 |
|
72 |
opcode = accum_opc; |
| 274 |
|
|
} |
| 275 |
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|
2160 |
if(real_len == 1) { |
| 276 |
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|
1080 |
if(parsed.kind == K::abs) opcode = base+0x6; |
| 277 |
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|
1080 |
if(parsed.kind == K::x) opcode = base+0x16; |
| 278 |
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|
1080 |
opcode1(ctx, opcode, the_num); |
| 279 |
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|
1080 |
} else if(real_len == 2) { |
| 280 |
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|
1080 |
if(parsed.kind == K::abs) opcode = base+0xe; |
| 281 |
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|
1080 |
if(parsed.kind == K::x) opcode = base+0x1e; |
| 282 |
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|
1080 |
opcode2(ctx, opcode, the_num); |
| 283 |
|
|
} |
| 284 |
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|
1440 |
} |
| 285 |
|
|
|
| 286 |
|
|
template<int base> |
| 287 |
|
288 |
void tsb_trb(insn_context& ctx) { |
| 288 |
|
|
using K = addr_kind; |
| 289 |
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|
288 |
auto parsed = parse_addr_kind<K::abs>(ctx); |
| 290 |
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|
288 |
int64_t the_num = pass == 2 ? getnum(parsed.arg) : 0; |
| 291 |
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|
288 |
int real_len = get_real_len(1, 2, ctx, parsed); |
| 292 |
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|
288 |
if(real_len == 1) opcode1(ctx, base + 0x04, the_num); |
| 293 |
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|
144 |
else opcode2(ctx, base + 0x0c, the_num); |
| 294 |
|
288 |
} |
| 295 |
|
|
|
| 296 |
|
|
template<int opc, int width = 1> |
| 297 |
|
432 |
void branch(insn_context& ctx) { |
| 298 |
|
|
using K = addr_kind; |
| 299 |
2/2
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|
432 |
auto parsed = parse_addr_kind<K::abs>(ctx); |
| 300 |
|
198 |
int64_t num = 0; |
| 301 |
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|
396 |
if(pass == 2) { |
| 302 |
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|
132 |
num = getnum(parsed.arg); |
| 303 |
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|
132 |
if(foundlabel) { |
| 304 |
|
|
// cast delta to signed 16-bit, this makes it possible to handle bank-border-wrapping automatically |
| 305 |
|
120 |
int16_t delta = num - (snespos + width + 1); |
| 306 |
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|
120 |
if((num & ~0xffff) != (snespos & ~0xffff)) { |
| 307 |
|
|
// todo: should throw error "can't branch to different bank" |
| 308 |
|
✗ |
asar_throw_error(2, error_type_block, error_id_relative_branch_out_of_bounds, dec(delta).data()); |
| 309 |
|
|
} |
| 310 |
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|
108 |
if(width==1 && (delta < -128 || delta > 127)) { |
| 311 |
|
✗ |
asar_throw_error(2, error_type_block, error_id_relative_branch_out_of_bounds, dec(delta).data()); |
| 312 |
|
|
} |
| 313 |
|
120 |
num = delta; |
| 314 |
|
|
} else { |
| 315 |
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|
12 |
if(num & ~(width==2 ? 0xffff : 0xff)) { |
| 316 |
|
✗ |
asar_throw_error(2, error_type_block, error_id_relative_branch_out_of_bounds, dec(num).data()); |
| 317 |
|
|
} |
| 318 |
|
12 |
num = (int16_t)(width==2 ? num : (int8_t)num); |
| 319 |
|
|
} |
| 320 |
|
|
} |
| 321 |
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|
324 |
if(width == 1) opcode1(ctx, opc, num); |
| 322 |
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|
72 |
else if(width == 2) opcode2(ctx, opc, num); |
| 323 |
|
396 |
} |
| 324 |
|
|
|
| 325 |
|
|
template<int opc> |
| 326 |
|
1548 |
void implied(insn_context& ctx) { |
| 327 |
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|
1548 |
if(ctx.arg != "") { |
| 328 |
|
|
// todo: some kind of "this instruction doesn't take an argument" message? |
| 329 |
|
✗ |
asar_throw_error(0, error_type_block, error_id_bad_addr_mode); |
| 330 |
|
|
} |
| 331 |
|
|
// also should check that ctx.modifier == 0 |
| 332 |
|
774 |
opcode0(ctx, opc); |
| 333 |
|
1548 |
} |
| 334 |
|
|
|
| 335 |
|
|
template<int opc> |
| 336 |
|
6120 |
void implied_rep(insn_context& ctx) { |
| 337 |
|
|
using K = addr_kind; |
| 338 |
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|
6120 |
auto parsed = parse_addr_kind<K::imm, K::imp>(ctx); |
| 339 |
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|
6120 |
if(parsed.kind == K::imp) { |
| 340 |
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|
2880 |
opcode0(ctx, opc); |
| 341 |
|
|
} else { |
| 342 |
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|
360 |
handle_implicit_rep(parsed.arg, opc); |
| 343 |
|
|
} |
| 344 |
|
6120 |
} |
| 345 |
|
|
|
| 346 |
|
|
template<int base, char op, char xy> |
| 347 |
|
1800 |
void xy_ops(insn_context& ctx) { |
| 348 |
|
|
using K = addr_kind; |
| 349 |
|
900 |
parse_result parsed; |
| 350 |
|
|
if(op == 'S') { // stx |
| 351 |
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|
360 |
parsed = parse_addr_kind<K::abs, (xy == 'X' ? K::y : K::x)>(ctx); |
| 352 |
|
|
} else if(op == 'L') { // ldx |
| 353 |
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|
864 |
parsed = parse_addr_kind<K::abs, K::imm, (xy == 'X' ? K::y : K::x)>(ctx); |
| 354 |
|
|
} else { // cpx |
| 355 |
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|
576 |
parsed = parse_addr_kind<K::abs, K::imm>(ctx); |
| 356 |
|
|
} |
| 357 |
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|
1800 |
int64_t the_num = pass == 2 ? getnum(parsed.arg) : 0; |
| 358 |
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|
1800 |
int real_len = get_real_len(1, 2, ctx, parsed); |
| 359 |
|
900 |
int opcode = 0; |
| 360 |
2/2
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|
1800 |
if(parsed.kind == K::imm) { |
| 361 |
|
288 |
opcode = base; |
| 362 |
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|
1224 |
} else if(parsed.kind == K::abs) { |
| 363 |
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|
864 |
if(real_len == 1) opcode = base + 0x4; |
| 364 |
|
216 |
else opcode = base + 0xc; |
| 365 |
|
|
} else { // ,x or ,y |
| 366 |
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|
360 |
if(real_len == 1) opcode = base + 0x14; |
| 367 |
|
72 |
else opcode = base + 0x1c; |
| 368 |
|
|
} |
| 369 |
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|
1512 |
if(real_len == 1) opcode1(ctx, opcode, the_num); |
| 370 |
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|
864 |
else if(real_len == 2) opcode2(ctx, opcode, the_num); |
| 371 |
|
1800 |
} |
| 372 |
|
|
|
| 373 |
|
|
template<int opc> |
| 374 |
|
216 |
void interrupt(insn_context& ctx) { |
| 375 |
|
|
using K = addr_kind; |
| 376 |
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|
216 |
auto parsed = parse_addr_kind<K::imm, K::imp>(ctx); |
| 377 |
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|
216 |
if(parsed.kind == K::imp) { |
| 378 |
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|
108 |
opcode1(ctx, opc, 0); |
| 379 |
|
|
} else { |
| 380 |
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|
108 |
int64_t num = pass == 2 ? getnum(parsed.arg) : 0; |
| 381 |
|
|
// this is kinda hacky |
| 382 |
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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); |
| 383 |
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|
108 |
opcode1(ctx, opc, num); |
| 384 |
|
|
} |
| 385 |
|
216 |
} |
| 386 |
|
|
|
| 387 |
|
|
template<int opc, addr_kind k, int width> |
| 388 |
|
1044 |
void oneoff(insn_context& ctx) { |
| 389 |
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|
1044 |
auto parsed = parse_addr_kind<k>(ctx); |
| 390 |
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|
1044 |
int64_t the_num = pass == 2 ? getnum(parsed.arg) : 0; |
| 391 |
|
|
// only for error checking, we know the answer anyways |
| 392 |
1/2
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|
1044 |
get_real_len(width, width, ctx, parsed); |
| 393 |
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|
108 |
if(width == 1) opcode1(ctx, opc, the_num); |
| 394 |
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|
36 |
else if(width == 2) opcode2(ctx, opc, the_num); |
| 395 |
1/2
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|
900 |
else if(width == 3) opcode3(ctx, opc, the_num); |
| 396 |
|
1044 |
} |
| 397 |
|
|
|
| 398 |
|
144 |
void stz(insn_context& ctx) { |
| 399 |
|
|
using K = addr_kind; |
| 400 |
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|
144 |
auto parsed = parse_addr_kind<K::abs, K::x>(ctx); |
| 401 |
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|
144 |
int64_t the_num = pass == 2 ? getnum(parsed.arg) : 0; |
| 402 |
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|
144 |
int real_len = get_real_len(1, 2, ctx, parsed); |
| 403 |
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|
144 |
if(real_len == 1) { |
| 404 |
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|
72 |
if(parsed.kind == K::abs) opcode1(ctx, 0x64, the_num); |
| 405 |
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|
36 |
else if(parsed.kind == K::x) opcode1(ctx, 0x74, the_num); |
| 406 |
|
|
} else { |
| 407 |
3/4
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|
72 |
if(parsed.kind == K::abs) opcode2(ctx, 0x9c, the_num); |
| 408 |
2/4
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|
36 |
else if(parsed.kind == K::x) opcode2(ctx, 0x9e, the_num); |
| 409 |
|
|
} |
| 410 |
|
144 |
} |
| 411 |
|
|
|
| 412 |
|
|
template<char which> |
| 413 |
|
768 |
void jmp_jsr_jml(insn_context& ctx) { |
| 414 |
|
|
using K = addr_kind; |
| 415 |
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768 |
auto parsed = which == 'R' ? parse_addr_kind<K::abs, K::xind>(ctx) |
| 416 |
|
|
: which == 'P' ? parse_addr_kind<K::abs, K::xind, K::ind, K::lind>(ctx) |
| 417 |
|
|
: /* 'L' */ parse_addr_kind<K::abs, K::lind>(ctx); |
| 418 |
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|
768 |
int64_t the_num = pass == 2 ? getnum(parsed.arg) : 0; |
| 419 |
|
|
// set optimizeforbank to -1 (i.e. auto, assume DBR = current bank) |
| 420 |
|
|
// because jmp and jsr's arguments are relative to the program bank anyways |
| 421 |
|
768 |
int old_optimize = optimizeforbank; |
| 422 |
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|
768 |
if(parsed.kind == K::lind || parsed.kind == K::ind) { |
| 423 |
|
|
// these ones for Some Reason always read the pointer from bank 0 lol |
| 424 |
|
144 |
optimizeforbank = 0; |
| 425 |
|
|
} else { |
| 426 |
|
|
// the rest use bank K |
| 427 |
|
624 |
optimizeforbank = -1; |
| 428 |
|
|
} |
| 429 |
|
390 |
int the_width = 2; |
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288 |
if(which == 'L' && parsed.kind == K::abs) the_width = 3; |
| 431 |
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768 |
get_real_len(the_width, the_width, ctx, parsed); |
| 432 |
|
768 |
optimizeforbank = old_optimize; |
| 433 |
|
|
if(which == 'R') { |
| 434 |
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288 |
if(parsed.kind == K::abs) opcode2(ctx, 0x20, the_num); |
| 435 |
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|
36 |
else if(parsed.kind == K::xind) opcode2(ctx, 0xfc, the_num); |
| 436 |
|
|
} else if(which == 'L') { |
| 437 |
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288 |
if(parsed.kind == K::abs) opcode3(ctx, 0x5c, the_num); |
| 438 |
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36 |
else if(parsed.kind == K::lind) opcode2(ctx, 0xdc, the_num); |
| 439 |
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} else { |
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192 |
if(parsed.kind == K::abs) opcode2(ctx, 0x4c, the_num); |
| 441 |
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144 |
else if(parsed.kind == K::ind) opcode2(ctx, 0x6c, the_num); |
| 442 |
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|
108 |
else if(parsed.kind == K::xind) opcode2(ctx, 0x7c, the_num); |
| 443 |
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72 |
else if(parsed.kind == K::lind) opcode2(ctx, 0xdc, the_num); |
| 444 |
|
|
} |
| 445 |
|
768 |
} |
| 446 |
|
|
|
| 447 |
|
|
template<int opc> |
| 448 |
|
72 |
void mvn_mvp(insn_context& ctx) { |
| 449 |
|
|
int count; |
| 450 |
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|
72 |
autoptr<char**> parts = qpsplit(ctx.arg.raw(), ',', &count); |
| 451 |
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|
72 |
if(count != 2) asar_throw_error(2, error_type_block, error_id_bad_addr_mode); |
| 452 |
|
|
// todo length checks ??? |
| 453 |
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36 |
opcode0(ctx, opc); |
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|
72 |
if(pass == 2) { |
| 455 |
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24 |
write1(getnum(parts[0])); |
| 456 |
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|
24 |
write1(getnum(parts[1])); |
| 457 |
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} else { |
| 458 |
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|
48 |
write2(0); |
| 459 |
|
|
} |
| 460 |
|
72 |
} |
| 461 |
|
|
|
| 462 |
|
|
assocarr<void(*)(insn_context&)> mnemonics = { |
| 463 |
|
|
{ "ora", the8<0x00> }, |
| 464 |
|
|
{ "and", the8<0x20> }, |
| 465 |
|
|
{ "eor", the8<0x40> }, |
| 466 |
|
|
{ "adc", the8<0x60> }, |
| 467 |
|
|
{ "sta", the8<0x80, false> }, |
| 468 |
|
|
{ "lda", the8<0xa0> }, |
| 469 |
|
|
{ "cmp", the8<0xc0> }, |
| 470 |
|
|
{ "sbc", the8<0xe0> }, |
| 471 |
|
|
{ "asl", thenext8<0x00, 0x0a> }, |
| 472 |
|
|
{ "bit", thenext8<0x1e, 0x89, true> }, |
| 473 |
|
|
{ "rol", thenext8<0x20, 0x2a> }, |
| 474 |
|
|
{ "lsr", thenext8<0x40, 0x4a> }, |
| 475 |
|
|
{ "ror", thenext8<0x60, 0x6a> }, |
| 476 |
|
|
{ "dec", thenext8<0xc0, 0x3a> }, |
| 477 |
|
|
{ "inc", thenext8<0xe0, 0x1a> }, |
| 478 |
|
|
{ "bcc", branch<0x90> }, |
| 479 |
|
|
{ "bcs", branch<0xb0> }, |
| 480 |
|
|
{ "beq", branch<0xf0> }, |
| 481 |
|
|
{ "bmi", branch<0x30> }, |
| 482 |
|
|
{ "bne", branch<0xd0> }, |
| 483 |
|
|
{ "bpl", branch<0x10> }, |
| 484 |
|
|
{ "bra", branch<0x80> }, |
| 485 |
|
|
{ "bvc", branch<0x50> }, |
| 486 |
|
|
{ "bvs", branch<0x70> }, |
| 487 |
|
|
{ "brl", branch<0x82, 2> }, |
| 488 |
|
|
{ "clc", implied<0x18> }, |
| 489 |
|
|
{ "cld", implied<0xd8> }, |
| 490 |
|
|
{ "cli", implied<0x58> }, |
| 491 |
|
|
{ "clv", implied<0xb8> }, |
| 492 |
|
|
{ "dex", implied_rep<0xca> }, |
| 493 |
|
|
{ "dey", implied_rep<0x88> }, |
| 494 |
|
|
{ "inx", implied_rep<0xe8> }, |
| 495 |
|
|
{ "iny", implied_rep<0xc8> }, |
| 496 |
|
|
{ "nop", implied_rep<0xea> }, |
| 497 |
|
|
{ "pha", implied<0x48> }, |
| 498 |
|
|
{ "phb", implied<0x8b> }, |
| 499 |
|
|
{ "phd", implied<0x0b> }, |
| 500 |
|
|
{ "phk", implied<0x4b> }, |
| 501 |
|
|
{ "php", implied<0x08> }, |
| 502 |
|
|
{ "phx", implied<0xda> }, |
| 503 |
|
|
{ "phy", implied<0x5a> }, |
| 504 |
|
|
{ "pla", implied<0x68> }, |
| 505 |
|
|
{ "plb", implied<0xab> }, |
| 506 |
|
|
{ "pld", implied<0x2b> }, |
| 507 |
|
|
{ "plp", implied<0x28> }, |
| 508 |
|
|
{ "plx", implied<0xfa> }, |
| 509 |
|
|
{ "ply", implied<0x7a> }, |
| 510 |
|
|
{ "rti", implied<0x40> }, |
| 511 |
|
|
{ "rtl", implied<0x6b> }, |
| 512 |
|
|
{ "rts", implied<0x60> }, |
| 513 |
|
|
{ "sec", implied<0x38> }, |
| 514 |
|
|
{ "sed", implied<0xf8> }, |
| 515 |
|
|
{ "sei", implied<0x78> }, |
| 516 |
|
|
{ "stp", implied<0xdb> }, |
| 517 |
|
|
{ "tax", implied<0xaa> }, |
| 518 |
|
|
{ "tay", implied<0xa8> }, |
| 519 |
|
|
{ "tcd", implied<0x5b> }, |
| 520 |
|
|
{ "tcs", implied<0x1b> }, |
| 521 |
|
|
{ "tdc", implied<0x7b> }, |
| 522 |
|
|
{ "tsc", implied<0x3b> }, |
| 523 |
|
|
{ "tsx", implied<0xba> }, |
| 524 |
|
|
{ "txa", implied<0x8a> }, |
| 525 |
|
|
{ "txs", implied<0x9a> }, |
| 526 |
|
|
{ "txy", implied<0x9b> }, |
| 527 |
|
|
{ "tya", implied<0x98> }, |
| 528 |
|
|
{ "tyx", implied<0xbb> }, |
| 529 |
|
|
{ "wai", implied<0xcb> }, |
| 530 |
|
|
{ "xba", implied<0xeb> }, |
| 531 |
|
|
{ "xce", implied<0xfb> }, |
| 532 |
|
|
{ "ldy", xy_ops<0xa0, 'L', 'Y'> }, |
| 533 |
|
|
{ "ldx", xy_ops<0xa2, 'L', 'X'> }, |
| 534 |
|
|
{ "cpy", xy_ops<0xc0, 'C', 'Y'> }, |
| 535 |
|
|
{ "cpx", xy_ops<0xe0, 'C', 'X'> }, |
| 536 |
|
|
{ "stx", xy_ops<0x82, 'S', 'X'> }, |
| 537 |
|
|
{ "sty", xy_ops<0x80, 'S', 'Y'> }, |
| 538 |
|
|
{ "cop", interrupt<0x02> }, |
| 539 |
|
|
{ "wdm", interrupt<0x42> }, |
| 540 |
|
|
{ "brk", interrupt<0x00> }, |
| 541 |
|
|
{ "tsb", tsb_trb<0x00> }, |
| 542 |
|
|
{ "trb", tsb_trb<0x10> }, |
| 543 |
|
|
{ "rep", oneoff<0xc2, addr_kind::imm, 1> }, |
| 544 |
|
|
{ "sep", oneoff<0xe2, addr_kind::imm, 1> }, |
| 545 |
|
|
{ "pei", oneoff<0xd4, addr_kind::ind, 1> }, |
| 546 |
|
|
{ "pea", oneoff<0xf4, addr_kind::abs, 2> }, |
| 547 |
|
|
{ "mvn", mvn_mvp<0x54> }, |
| 548 |
|
|
{ "mvp", mvn_mvp<0x44> }, |
| 549 |
|
|
{ "jsl", oneoff<0x22, addr_kind::abs, 3> }, |
| 550 |
|
|
{ "per", branch<0x62, 2> }, |
| 551 |
|
|
{ "stz", stz }, |
| 552 |
|
|
{ "jmp", jmp_jsr_jml<'P'> }, |
| 553 |
|
|
{ "jsr", jmp_jsr_jml<'R'> }, |
| 554 |
|
|
{ "jml", jmp_jsr_jml<'L'> }, |
| 555 |
|
|
}; |
| 556 |
|
|
|
| 557 |
|
|
|
| 558 |
|
68664 |
bool asblock_65816(char** word, int numwords) |
| 559 |
|
|
{ |
| 560 |
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|
68664 |
if(word[0][0] == '\'') return false; |
| 561 |
|
30603 |
int word_i = 0; |
| 562 |
|
30603 |
bool autoclean = false; |
| 563 |
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|
67458 |
if(!stricmpwithlower(word[0], "autoclean")) { |
| 564 |
|
243 |
word_i++; |
| 565 |
|
243 |
autoclean = true; |
| 566 |
|
|
} |
| 567 |
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|
67458 |
string opc = word[word_i++]; |
| 568 |
|
30603 |
string par; |
| 569 |
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|
129282 |
for(int i = word_i; i < numwords; i++){ |
| 570 |
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|
61824 |
if(i > word_i) par += " "; |
| 571 |
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|
61824 |
par += word[i]; |
| 572 |
|
|
} |
| 573 |
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|
410160 |
for(int i = 0; i < opc.length(); i++) opc.raw()[i] = to_lower(opc[i]); |
| 574 |
|
30603 |
char mod = 0; |
| 575 |
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|
67458 |
if(opc.length() >= 2 && opc[opc.length()-2] == '.') { |
| 576 |
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|
2340 |
mod = opc[opc.length()-1]; |
| 577 |
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|
2340 |
opc.truncate(opc.length()-2); |
| 578 |
|
|
} |
| 579 |
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|
67458 |
if(!mnemonics.exists(opc.data())) return false; |
| 580 |
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|
12087 |
insn_context ctx{par, {}, mod, 0}; |
| 581 |
|
12087 |
ctx.orig_insn[0] = opc[0]; |
| 582 |
|
12087 |
ctx.orig_insn[1] = opc[1]; |
| 583 |
|
12087 |
ctx.orig_insn[2] = opc[2]; |
| 584 |
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|
12087 |
mnemonics.find(opc.data())(ctx); |
| 585 |
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|
12039 |
if(autoclean && pass > 0) { |
| 586 |
|
|
// should be changed to "can't use autoclean on this instruction"? |
| 587 |
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|
288 |
if(ctx.written_len != 3) asar_throw_error(2, error_type_block, error_id_broken_autoclean); |
| 588 |
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|
288 |
handle_autoclean(ctx.parsed_arg, ctx.written_opcode, snespos - 4); |
| 589 |
|
|
} |
| 590 |
|
6024 |
return true; |
| 591 |
|
67554 |
} |
| 592 |
|
|
|