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Add support for 6800 compatibility instructions. The occasional program uses the 6800 compatibility instructions since they are actually specified by Motorola in at least some documentation. They advertised the 6809 as source compatible with the 6800. This mode is not enabled by default, however. It is my belief that receiving an error when using a non-6809 instruction is more useful since it is unlikely that much 6800 source code is being assembled for the 6809 these days. Nevertheless, the --6809compat option is present for just those purposes so one does not have to resort to using macros (which would work equally well in most cases).
author William Astle <lost@l-w.ca>
date Tue, 15 Apr 2014 10:57:34 -0600
parents d4ac484d0ec6
children 5d401d1eb3e9
comparison
equal deleted inserted replaced
332:26bfe8d557e2 333:507f442dc71e
57 { "6309", '3', 0, 0, "Set assembler to 6309 mode (default)" }, 57 { "6309", '3', 0, 0, "Set assembler to 6309 mode (default)" },
58 { "includedir", 'I', "PATH", 0, "Add entry to include path" }, 58 { "includedir", 'I', "PATH", 0, "Add entry to include path" },
59 { "define", 'D', "SYM[=VAL]", 0, "Automatically define SYM to be VAL (or 1)"}, 59 { "define", 'D', "SYM[=VAL]", 0, "Automatically define SYM to be VAL (or 1)"},
60 { "preprocess", 'P', 0, 0, "Preprocess macros and conditionals and output revised source to stdout" }, 60 { "preprocess", 'P', 0, 0, "Preprocess macros and conditionals and output revised source to stdout" },
61 { "unicorns", 0x142, 0, 0, "Add sooper sekrit sauce"}, 61 { "unicorns", 0x142, 0, 0, "Add sooper sekrit sauce"},
62 { "6800compat", 0x200, 0, 0, "Enable 6800 compatibility instructions, equivalent to --pragma=6800compat" },
62 { 0 } 63 { 0 }
63 }; 64 };
64 65
65 66
66 static int parse_opts(int key, char *arg, void *state) 67 static int parse_opts(int key, char *arg, void *state)
188 as -> target = TARGET_6309; 189 as -> target = TARGET_6309;
189 break; 190 break;
190 191
191 case 'P': 192 case 'P':
192 as -> preprocess = 1; 193 as -> preprocess = 1;
194 break;
195
196 case 0x200:
197 as -> pragmas |= PRAGMA_6800COMPAT;
193 break; 198 break;
194 199
195 case lw_cmdline_key_end: 200 case lw_cmdline_key_end:
196 break; 201 break;
197 202