| 1 | /* Copyright (c) 1982 Regents of the University of California */ |
| 2 | |
| 3 | static char sccsid[] = "@(#)asm.c 1.2 %G%"; |
| 4 | |
| 5 | /* |
| 6 | * Assembly language dependent symbol routines. |
| 7 | */ |
| 8 | |
| 9 | #include "defs.h" |
| 10 | #include "symbols.h" |
| 11 | #include "asm.h" |
| 12 | #include "languages.h" |
| 13 | #include "tree.h" |
| 14 | #include "eval.h" |
| 15 | #include "operators.h" |
| 16 | #include "mappings.h" |
| 17 | #include "process.h" |
| 18 | #include "runtime.h" |
| 19 | #include "machine.h" |
| 20 | |
| 21 | #define isdouble(range) ( \ |
| 22 | range->symvalue.rangev.upper == 0 and range->symvalue.rangev.lower > 0 \ |
| 23 | ) |
| 24 | |
| 25 | /* |
| 26 | * Initialize assembly language information. |
| 27 | */ |
| 28 | |
| 29 | public asm_init() |
| 30 | { |
| 31 | Language lang; |
| 32 | |
| 33 | lang = language_define("assembler", ".s"); |
| 34 | language_setop(lang, L_PRINTDECL, asm_printdecl); |
| 35 | language_setop(lang, L_PRINTVAL, asm_printval); |
| 36 | language_setop(lang, L_TYPEMATCH, asm_typematch); |
| 37 | } |
| 38 | |
| 39 | /* |
| 40 | * Test if two types are compatible. |
| 41 | */ |
| 42 | |
| 43 | public Boolean asm_typematch(type1, type2) |
| 44 | Symbol type1, type2; |
| 45 | { |
| 46 | Boolean b; |
| 47 | |
| 48 | b = false; |
| 49 | return b; |
| 50 | } |
| 51 | |
| 52 | public asm_printdecl(s) |
| 53 | Symbol s; |
| 54 | { |
| 55 | switch (s->class) { |
| 56 | case VAR: |
| 57 | case REF: |
| 58 | printf("&%s = 0x%x", symname(s), s->symvalue.offset); |
| 59 | break; |
| 60 | |
| 61 | case PROC: |
| 62 | case FUNC: |
| 63 | printf("%s (0x%x):", symname(s), codeloc(s)); |
| 64 | break; |
| 65 | |
| 66 | default: |
| 67 | error("class %s in c_printdecl", classname(s)); |
| 68 | } |
| 69 | putchar('\n'); |
| 70 | } |
| 71 | |
| 72 | /* |
| 73 | * Print out the value on the top of the expression stack |
| 74 | * in the format for the type of the given symbol. |
| 75 | */ |
| 76 | |
| 77 | public asm_printval(s) |
| 78 | register Symbol s; |
| 79 | { |
| 80 | register Symbol t; |
| 81 | register Integer len; |
| 82 | |
| 83 | switch (s->class) { |
| 84 | case ARRAY: |
| 85 | t = rtype(s->type); |
| 86 | if (t->class == RANGE and istypename(t->type, "$char")) { |
| 87 | len = size(s); |
| 88 | sp -= len; |
| 89 | printf("\"%.*s\"", len, sp); |
| 90 | } else { |
| 91 | printarray(s); |
| 92 | } |
| 93 | break; |
| 94 | |
| 95 | default: |
| 96 | printf("0x%x", pop(Integer)); |
| 97 | break; |
| 98 | } |
| 99 | } |