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view lwasm/list.c @ 505:59b8c8b15bd4
Add integer shifts and fix code template errors for mul/div/mod
One needs to remove stuff from the stack after putting it there. Actually do
that in the code output for multiplication, division, and modulus.
Add integer shifting code output which is optimized for constant shift
counts but calls a routine for non-constant shift counts. Shifting by a
negative amount is a no-op. Shifting by more than the size of an integer
results in 0 (for left shifts) or -1 (for right shifts). Both negative shift
counts and shift counts larger than the base type are undefined in the C
standard so this behaviour is allowed.
author | William Astle <lost@l-w.ca> |
---|---|
date | Sat, 26 Oct 2019 22:01:55 -0600 |
parents | 40c32a0af8c8 |
children | 10f62dc61a75 |
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/* list.c Copyright © 2010 William Astle This file is part of LWTOOLS. LWTOOLS is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <stdio.h> #include <string.h> #include <lw_alloc.h> #include <lw_string.h> #include "lwasm.h" #include "instab.h" void list_symbols(asmstate_t *as, FILE *of); /* Do listing */ void do_list(asmstate_t *as) { line_t *cl, *nl, *nl2; FILE *of = NULL; int i; unsigned char *obytes = NULL; int obytelen = 0; char *tc; if (!(as -> flags & FLAG_LIST)) { of = NULL; } else { if (as -> list_file) { if (strcmp(as -> list_file, "-") == 0) { of = stdout; } else of = fopen(as -> list_file, "w"); } else of = stdout; if (!of) { fprintf(stderr, "Cannot open list file; list not generated\n"); return; } } for (cl = as -> line_head; cl; cl = nl) { char *linespec; nl = cl -> next; if (CURPRAGMA(cl, PRAGMA_NOLIST)) { if (cl -> outputl <= 0) continue; } if (cl -> noexpand_start) { obytelen = 0; int nc = 0; for (nl = cl; nl; nl = nl -> next) { if (nl -> noexpand_start) nc += nl -> noexpand_start; if (nl -> noexpand_end) nc -= nl -> noexpand_end; if (nl -> outputl > 0) obytelen += nl -> outputl; if (nl -> warn) { lwasm_error_t *e; for (e = nl -> warn; e; e = e -> next) { if (of != stdout) printf("Warning (%s:%d): %s\n", cl -> linespec, cl -> lineno, e -> mess); if (of) fprintf(of, "Warning: %s\n", e -> mess); } } if (nc == 0) break; } obytes = lw_alloc(obytelen); nc = 0; for (nl2 = cl; ; nl2 = nl2 -> next) { int i; for (i = 0; i < nl2 -> outputl; i++) { obytes[nc++] = nl2 -> output[i]; } if (nc >= obytelen) break; } if (nl) nl = nl -> next; } else { if (cl -> warn) { lwasm_error_t *e; for (e = cl -> warn; e; e = e -> next) { if (of != stdout) printf("Warning (%s:%d): %s\n", cl -> linespec, cl -> lineno, e -> mess); if (of) fprintf(of, "Warning: %s\n", e -> mess); } } obytelen = cl -> outputl; if (obytelen > 0) { obytes = lw_alloc(obytelen); memmove(obytes, cl -> output, cl -> outputl); } } if (cl -> hidecond && CURPRAGMA(cl, PRAGMA_NOEXPANDCOND)) continue; if ((cl -> len < 1 && cl -> dlen < 1) && obytelen < 1 && (cl -> symset == 1 || cl -> sym == NULL) ) { if (cl -> soff >= 0) { if (of) fprintf(of, "%04Xs ", cl -> soff & 0xffff); } else if (cl -> dshow >= 0) { if (cl -> dsize == 1) { if (of) fprintf(of, " %02X ", cl -> dshow & 0xff); } else { if (of) fprintf(of, " %04X ", cl -> dshow & 0xff); } } else if (cl -> dptr) { lw_expr_t te; te = lw_expr_copy(cl -> dptr -> value); as -> exportcheck = 1; as -> csect = cl -> csect; lwasm_reduce_expr(as, te); as -> exportcheck = 0; if (lw_expr_istype(te, lw_expr_type_int)) { if (of) fprintf(of, " %04X ", lw_expr_intval(te) & 0xffff); } else { if (of) fprintf(of, " ???? "); } lw_expr_destroy(te); } else { if (of) fprintf(of, " "); } } else { lw_expr_t te; if (instab[cl -> insn].flags & lwasm_insn_setdata) te = lw_expr_copy(cl -> daddr); else te = lw_expr_copy(cl -> addr); as -> exportcheck = 1; as -> csect = cl -> csect; lwasm_reduce_expr(as, te); as -> exportcheck = 0; // if (of) fprintf(of, "%s\n", lw_expr_print(te)); if (of) fprintf(of, "%04X%c", lw_expr_intval(te) & 0xffff, ((cl -> inmod || (cl -> dlen != cl -> len)) && instab[cl -> insn].flags & lwasm_insn_setdata) ? '.' : ' '); lw_expr_destroy(te); for (i = 0; i < obytelen && i < 8; i++) { if (of) fprintf(of, "%02X", obytes[i]); } for (; i < 8; i++) { if (of) fprintf(of, " "); } if (of) fprintf(of, " "); } /* the format specifier below is deliberately chosen so that the start of the line text is at a multiple of 8 from the start of the list line */ #define max_linespec_len 17 // trim "include:" if it appears if (as -> listnofile) { if (of) fprintf(of, "%05d ", cl->lineno); } else { linespec = cl -> linespec; if ((strlen(linespec) > 8) && (linespec[7] == ':')) linespec += 8; while (*linespec == ' ') linespec++; if (of) fprintf(of, "(%*.*s):%05d ", max_linespec_len, max_linespec_len, linespec, cl->lineno); } if (CURPRAGMA(cl, PRAGMA_CC)) { as->cycle_total = 0; } /* display cycle counts */ char s[64] = ""; if (CURPRAGMA(cl, PRAGMA_C) || CURPRAGMA(cl, PRAGMA_CD)) { if (cl->cycle_base != 0) { char ch = '('; if (CURPRAGMA(cl, PRAGMA_6809)) ch = '['; if (CURPRAGMA(cl, PRAGMA_CD) && cl->cycle_flags & CYCLE_ADJ) { sprintf(s, "%c%d+%d", ch, cl->cycle_base, cl->cycle_adj); /* detailed cycle count */ } else { sprintf(s, "%c%d", ch, cl->cycle_base + cl->cycle_adj); /* normal cycle count*/ } if (cl->cycle_flags & CYCLE_ESTIMATED) strcat(s, "+?"); as->cycle_total += cl->cycle_base + cl->cycle_adj; ch = ')'; if (CURPRAGMA(cl, PRAGMA_6809)) ch = ']'; sprintf(s, "%s%c", s, ch); } } if (of) fprintf(of, "%-8s", s); if (CURPRAGMA(cl, PRAGMA_CT)) { if (cl->cycle_base != 0) { if (of) fprintf(of, "%-8d", as->cycle_total); } else { if (of) fprintf(of, " "); } } if (as -> tabwidth == 0) { fputs(cl -> ltext, of); } else { i = 0; for (tc = cl -> ltext; *tc; tc++) { if ((*tc) == '\t') { if (i % as -> tabwidth == 0) { if (of) fputc(' ', of); i++; } while (i % as -> tabwidth) { if (of) fputc(' ', of); i++; } } else { if (of) fputc(*tc, of); i++; } } } if (of) fputc('\n', of); if (obytelen > 8) { for (i = 8; i < obytelen; i++) { if (i % 8 == 0) { if (i != 8) { if (of) fprintf(of, "\n "); } else { if (of) fprintf(of, " "); } } if (of) fprintf(of, "%02X", obytes[i]); } if (i > 8) if (of) fprintf(of, "\n"); } lw_free(obytes); obytes = NULL; } if ((as -> flags & FLAG_SYMBOLS) && of) list_symbols(as, of); if (of && of != stdout) fclose(of); }