ref: 215e26b478c1cbf5a5d5dd86e7ee027072acaaac
dir: /src/asm/main.c/
/*
* This file is part of RGBDS.
*
* Copyright (c) 1997-2018, Carsten Sorensen and RGBDS contributors.
*
* SPDX-License-Identifier: MIT
*/
#include <ctype.h>
#include <errno.h>
#include <float.h>
#include <inttypes.h>
#include <math.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "asm/charmap.h"
#include "asm/format.h"
#include "asm/fstack.h"
#include "asm/lexer.h"
#include "asm/main.h"
#include "asm/opt.h"
#include "asm/output.h"
#include "asm/rpn.h"
#include "asm/symbol.h"
#include "asm/warning.h"
#include "parser.h"
#include "extern/err.h"
#include "extern/getopt.h"
#include "helpers.h"
#include "version.h"
// Old Bison versions (confirmed for 2.3) do not forward-declare `yyparse` in the generated header
// Unfortunately, macOS still ships 2.3, which is from 2008...
int yyparse(void);
#if defined(YYDEBUG) && YYDEBUG
extern int yydebug;
#endif
FILE * dependfile;
bool oGeneratedMissingIncludes;
bool oFailedOnMissingInclude;
bool oGeneratePhonyDeps;
char *tzTargetFileName;
bool haltnop;
bool optimizeloads;
bool verbose;
bool warnings; /* True to enable warnings, false to disable them. */
/* Escapes Make-special chars from a string */
static char *make_escape(const char *str)
{
char * const escaped_str = malloc(strlen(str) * 2 + 1);
char *dest = escaped_str;
if (escaped_str == NULL)
err(1, "%s: Failed to allocate memory", __func__);
while (*str) {
/* All dollars needs to be doubled */
if (*str == '$')
*dest++ = '$';
*dest++ = *str++;
}
*dest = '\0';
return escaped_str;
}
/* Short options */
static const char *optstring = "b:D:Eg:hi:LM:o:p:r:VvW:w";
/* Variables for the long-only options */
static int depType; /* Variants of `-M` */
/*
* Equivalent long options
* Please keep in the same order as short opts
*
* Also, make sure long opts don't create ambiguity:
* A long opt's name should start with the same letter as its short opt,
* except if it doesn't create any ambiguity (`verbose` versus `version`).
* This is because long opt matching, even to a single char, is prioritized
* over short opt matching
*/
static struct option const longopts[] = {
{ "binary-digits", required_argument, NULL, 'b' },
{ "define", required_argument, NULL, 'D' },
{ "export-all", no_argument, NULL, 'E' },
{ "gfx-chars", required_argument, NULL, 'g' },
{ "halt-without-nop", no_argument, NULL, 'h' },
{ "include", required_argument, NULL, 'i' },
{ "preserve-ld", no_argument, NULL, 'L' },
{ "dependfile", required_argument, NULL, 'M' },
{ "MG", no_argument, &depType, 'G' },
{ "MP", no_argument, &depType, 'P' },
{ "MT", required_argument, &depType, 'T' },
{ "MQ", required_argument, &depType, 'Q' },
{ "output", required_argument, NULL, 'o' },
{ "pad-value", required_argument, NULL, 'p' },
{ "recursion-depth", required_argument, NULL, 'r' },
{ "version", no_argument, NULL, 'V' },
{ "verbose", no_argument, NULL, 'v' },
{ "warning", required_argument, NULL, 'W' },
{ NULL, no_argument, NULL, 0 }
};
static void print_usage(void)
{
fputs(
"Usage: rgbasm [-EhLVvw] [-b chars] [-D name[=value]] [-g chars] [-i path]\n"
" [-M depend_file] [-MG] [-MP] [-MT target_file] [-MQ target_file]\n"
" [-o out_file] [-p pad_value] [-r depth] [-W warning] <file>\n"
"Useful options:\n"
" -E, --export-all export all labels\n"
" -M, --dependfile <path> set the output dependency file\n"
" -o, --output <path> set the output object file\n"
" -p, --pad-value <value> set the value to use for `ds'\n"
" -V, --version print RGBASM version and exit\n"
" -W, --warning <warning> enable or disable warnings\n"
"\n"
"For help, use `man rgbasm' or go to https://rgbds.gbdev.io/docs/\n",
stderr);
exit(1);
}
int main(int argc, char *argv[])
{
int ch;
char *ep;
time_t now = time(NULL);
char const *sourceDateEpoch = getenv("SOURCE_DATE_EPOCH");
/*
* Support SOURCE_DATE_EPOCH for reproducible builds
* https://reproducible-builds.org/docs/source-date-epoch/
*/
if (sourceDateEpoch)
now = (time_t)strtoul(sourceDateEpoch, NULL, 0);
dependfile = NULL;
#if defined(YYDEBUG) && YYDEBUG
yydebug = 1;
#endif
// Perform some init for below
sym_Init(now);
// Set defaults
oGeneratePhonyDeps = false;
oGeneratedMissingIncludes = false;
oFailedOnMissingInclude = false;
tzTargetFileName = NULL;
opt_B("01");
opt_G("0123");
opt_P(0);
optimizeloads = true;
haltnop = true;
verbose = false;
warnings = true;
sym_SetExportAll(false);
uint32_t maxRecursionDepth = 64;
size_t nTargetFileNameLen = 0;
while ((ch = musl_getopt_long_only(argc, argv, optstring, longopts, NULL)) != -1) {
switch (ch) {
case 'b':
if (strlen(musl_optarg) == 2)
opt_B(&musl_optarg[1]);
else
errx(1, "Must specify exactly 2 characters for option 'b'");
break;
char *equals;
case 'D':
equals = strchr(musl_optarg, '=');
if (equals) {
*equals = '\0';
sym_AddString(musl_optarg, equals + 1);
} else {
sym_AddString(musl_optarg, "1");
}
break;
case 'E':
sym_SetExportAll(true);
break;
case 'g':
if (strlen(musl_optarg) == 4)
opt_G(&musl_optarg[1]);
else
errx(1, "Must specify exactly 4 characters for option 'g'");
break;
case 'h':
haltnop = false;
break;
case 'i':
fstk_AddIncludePath(musl_optarg);
break;
case 'L':
optimizeloads = false;
break;
case 'M':
if (!strcmp("-", musl_optarg))
dependfile = stdout;
else
dependfile = fopen(musl_optarg, "w");
if (dependfile == NULL)
err(1, "Could not open dependfile %s", musl_optarg);
break;
case 'o':
out_SetFileName(musl_optarg);
break;
unsigned long fill;
case 'p':
fill = strtoul(musl_optarg, &ep, 0);
if (musl_optarg[0] == '\0' || *ep != '\0')
errx(1, "Invalid argument for option 'p'");
if (fill < 0 || fill > 0xFF)
errx(1, "Argument for option 'p' must be between 0 and 0xFF");
opt_P(fill);
break;
case 'r':
maxRecursionDepth = strtoul(musl_optarg, &ep, 0);
if (musl_optarg[0] == '\0' || *ep != '\0')
errx(1, "Invalid argument for option 'r'");
break;
case 'V':
printf("rgbasm %s\n", get_package_version_string());
exit(0);
case 'v':
verbose = true;
break;
case 'W':
processWarningFlag(musl_optarg);
break;
case 'w':
warnings = false;
break;
/* Long-only options */
case 0:
switch (depType) {
case 'G':
oGeneratedMissingIncludes = true;
break;
case 'P':
oGeneratePhonyDeps = true;
break;
case 'Q':
case 'T':
if (musl_optind == argc)
errx(1, "-M%c takes a target file name argument", depType);
ep = musl_optarg;
if (depType == 'Q')
ep = make_escape(ep);
nTargetFileNameLen += strlen(ep) + 1;
if (!tzTargetFileName) {
/* On first alloc, make an empty str */
tzTargetFileName = malloc(nTargetFileNameLen + 1);
if (tzTargetFileName)
*tzTargetFileName = '\0';
} else {
tzTargetFileName = realloc(tzTargetFileName,
nTargetFileNameLen + 1);
}
if (tzTargetFileName == NULL)
err(1, "Cannot append new file to target file list");
strcat(tzTargetFileName, ep);
if (depType == 'Q')
free(ep);
char *ptr = tzTargetFileName + strlen(tzTargetFileName);
*ptr++ = ' ';
*ptr = '\0';
break;
}
break;
/* Unrecognized options */
default:
print_usage();
/* NOTREACHED */
}
}
if (tzTargetFileName == NULL)
tzTargetFileName = tzObjectname;
if (argc == musl_optind) {
fputs("FATAL: No input files\n", stderr);
print_usage();
} else if (argc != musl_optind + 1) {
fputs("FATAL: More than one input file given\n", stderr);
print_usage();
}
char const *mainFileName = argv[musl_optind];
if (verbose)
printf("Assembling %s\n", mainFileName);
if (dependfile) {
if (!tzTargetFileName)
errx(1, "Dependency files can only be created if a target file is specified with either -o, -MQ or -MT\n");
fprintf(dependfile, "%s: %s\n", tzTargetFileName, mainFileName);
}
charmap_New("main", NULL);
// Init lexer and file stack, prodiving file info
lexer_Init();
fstk_Init(mainFileName, maxRecursionDepth);
// Perform parse (yyparse is auto-generated from `parser.y`)
if (yyparse() != 0 && nbErrors == 0)
nbErrors = 1;
if (dependfile)
fclose(dependfile);
sect_CheckUnionClosed();
if (nbErrors != 0)
errx(1, "Assembly aborted (%u error%s)!", nbErrors,
nbErrors == 1 ? "" : "s");
// If parse aborted due to missing an include, and `-MG` was given, exit normally
if (oFailedOnMissingInclude)
return 0;
/* If no path specified, don't write file */
if (tzObjectname != NULL)
out_WriteObject();
return 0;
}